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USB/PHY/EXTCON patches for 4.9-rc1 

Here is the big USB, and PHY, and extcon, patchsets for 4.9-rc1.
 
 Full details are in the shortlog, but generally a lot of new hardware
 support, usb gadget updates, and Wolfram's great cleanup of USB error
 message handling, making the kernel image a tad bit smaller.
 
 All of this has been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 iFYEABECABYFAlfyNTEPHGdyZWdAa3JvYWguY29tAAoJEDFH1A3bLfspbuUAoJAn
 XD6k9A+0QgnJ/iLiT8pztawNAKCCVYZOzgdFRGsnaZ2p7lb9IHpPCA==
 =QUj+
 -----END PGP SIGNATURE-----

Merge tag 'usb-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull usb/phy/extcon updates from Greg KH:
 "Here is the big USB, and PHY, and extcon, patchsets for 4.9-rc1.

  Full details are in the shortlog, but generally a lot of new hardware
  support, usb gadget updates, and Wolfram's great cleanup of USB error
  message handling, making the kernel image a tad bit smaller.

  All of this has been in linux-next with no reported issues"

* tag 'usb-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (343 commits)
  Revert "usbtmc: convert to devm_kzalloc"
  USB: serial: cp210x: Add ID for a Juniper console
  usb: Kconfig: using select for USB_COMMON dependency
  bluetooth: bcm203x: don't print error when allocating urb fails
  mmc: host: vub300: don't print error when allocating urb fails
  usb: hub: change CLEAR_FEATURE to SET_FEATURE
  usb: core: Introduce a USB port LED trigger
  USB: bcma: drop Northstar PHY 2.0 initialization code
  usb: core: hcd: add missing header dependencies
  usb: musb: da8xx: fix error handling message in probe
  usb: musb: Fix session based PM for first invalid VBUS
  usb: musb: Fix PM runtime for disconnect after unconfigure
  musb: Export musb_root_disconnect for use in modules
  usb: misc: legousbtower: Fix NULL pointer deference
  cdc-acm: hardening against malicious devices
  Revert "usb: gadget: NCM: Protect dev->port_usb using dev->lock"
  include: extcon: Fix compilation error caused because of incomplete merge
  MAINTAINERS: add tree entry for USB Serial
  phy-twl4030-usb: initialize charging-related stuff via pm_runtime
  phy-twl4030-usb: better handle musb_mailbox() failure
  ...
hifive-unleashed-5.1
Linus Torvalds 2016-10-03 20:17:35 -07:00
parent e6dce825fb ab21b63e8a
commit e6445f52d9
234 changed files with 7222 additions and 2147 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/ABI/testing/sysfs-class-led-trigger-usbport 100644
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@ -0,0 +1,12 @@
What: /sys/class/leds/<led>/ports/<port>
Date: September 2016
KernelVersion: 4.9
Contact: linux-leds@vger.kernel.org
linux-usb@vger.kernel.org
Description:
Every dir entry represents a single USB port that can be
selected for the USB port trigger. Selecting ports makes trigger
observing them for any connected devices and lighting on LED if
there are any.
Echoing "1" value selects USB port. Echoing "0" unselects it.
Current state can be also read.

41
Documentation/devicetree/bindings/extcon/qcom,pm8941-misc.txt 100644
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@ -0,0 +1,41 @@
Qualcomm's PM8941 USB ID Extcon device
Some Qualcomm PMICs have a "misc" module that can be used to detect when
the USB ID pin has been pulled low or high.
PROPERTIES
- compatible:
Usage: required
Value type: <string>
Definition: Should contain "qcom,pm8941-misc";
- reg:
Usage: required
Value type: <u32>
Definition: Should contain the offset to the misc address space
- interrupts:
Usage: required
Value type: <prop-encoded-array>
Definition: Should contain the usb id interrupt
- interrupt-names:
Usage: required
Value type: <stringlist>
Definition: Should contain the string "usb_id" for the usb id interrupt
Example:
pmic {
usb_id: misc@900 {
compatible = "qcom,pm8941-misc";
reg = <0x900>;
interrupts = <0x0 0x9 0 IRQ_TYPE_EDGE_BOTH>;
interrupt-names = "usb_id";
};
}
usb-controller {
extcon = <&usb_id>;
};

23
Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.txt 100644
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@ -0,0 +1,23 @@
Driver for Broadcom Northstar USB 3.0 PHY
Required properties:
- compatible: one of: "brcm,ns-ax-usb3-phy", "brcm,ns-bx-usb3-phy".
- reg: register mappings for DMP (Device Management Plugin) and ChipCommon B
MMI.
- reg-names: "dmp" and "ccb-mii"
Initialization of USB 3.0 PHY depends on Northstar version. There are currently
three known series: Ax, Bx and Cx.
Known A0: BCM4707 rev 0
Known B0: BCM4707 rev 4, BCM53573 rev 2
Known B1: BCM4707 rev 6
Known C0: BCM47094 rev 0
Example:
usb3-phy {
compatible = "brcm,ns-ax-usb3-phy";
reg = <0x18105000 0x1000>, <0x18003000 0x1000>;
reg-names = "dmp", "ccb-mii";
#phy-cells = <0>;
};

10
Documentation/devicetree/bindings/phy/mxs-usb-phy.txt
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@ -12,6 +12,16 @@ Required properties:
- interrupts: Should contain phy interrupt
- fsl,anatop: phandle for anatop register, it is only for imx6 SoC series
Optional properties:
- fsl,tx-cal-45-dn-ohms: Integer [30-55]. Resistance (in ohms) of switchable
high-speed trimming resistor connected in parallel with the 45 ohm resistor
that terminates the DN output signal. Default: 45
- fsl,tx-cal-45-dp-ohms: Integer [30-55]. Resistance (in ohms) of switchable
high-speed trimming resistor connected in parallel with the 45 ohm resistor
that terminates the DP output signal. Default: 45
- fsl,tx-d-cal: Integer [79-119]. Current trimming value (as a percentage) of
the 17.78mA TX reference current. Default: 100
Example:
usbphy1: usbphy@020c9000 {
compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";

64
Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt 100644
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@ -0,0 +1,64 @@
ROCKCHIP USB2.0 PHY WITH INNO IP BLOCK
Required properties (phy (parent) node):
- compatible : should be one of the listed compatibles:
* "rockchip,rk3366-usb2phy"
* "rockchip,rk3399-usb2phy"
- reg : the address offset of grf for usb-phy configuration.
- #clock-cells : should be 0.
- clock-output-names : specify the 480m output clock name.
Optional properties:
- clocks : phandle + phy specifier pair, for the input clock of phy.
- clock-names : input clock name of phy, must be "phyclk".
Required nodes : a sub-node is required for each port the phy provides.
The sub-node name is used to identify host or otg port,
and shall be the following entries:
* "otg-port" : the name of otg port.
* "host-port" : the name of host port.
Required properties (port (child) node):
- #phy-cells : must be 0. See ./phy-bindings.txt for details.
- interrupts : specify an interrupt for each entry in interrupt-names.
- interrupt-names : a list which shall be the following entries:
* "otg-id" : for the otg id interrupt.
* "otg-bvalid" : for the otg vbus interrupt.
* "linestate" : for the host/otg linestate interrupt.
Optional properties:
- phy-supply : phandle to a regulator that provides power to VBUS.
See ./phy-bindings.txt for details.
Example:
grf: syscon@ff770000 {
compatible = "rockchip,rk3366-grf", "syscon", "simple-mfd";
#address-cells = <1>;
#size-cells = <1>;
...
u2phy: usb2-phy@700 {
compatible = "rockchip,rk3366-usb2phy";
reg = <0x700 0x2c>;
#clock-cells = <0>;
clock-output-names = "sclk_otgphy0_480m";
u2phy_otg: otg-port {
#phy-cells = <0>;
interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "otg-id", "otg-bvalid", "linestate";
status = "okay";
};
u2phy_host: host-port {
#phy-cells = <0>;
interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "linestate";
status = "okay";
};
};
};

101
Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt 100644
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@ -0,0 +1,101 @@
* ROCKCHIP type-c PHY
---------------------
Required properties:
- compatible : must be "rockchip,rk3399-typec-phy"
- reg: Address and length of the usb phy control register set
- rockchip,grf : phandle to the syscon managing the "general
register files"
- clocks : phandle + clock specifier for the phy clocks
- clock-names : string, clock name, must be "tcpdcore", "tcpdphy-ref";
- assigned-clocks: main clock, should be <&cru SCLK_UPHY0_TCPDCORE> or
<&cru SCLK_UPHY1_TCPDCORE>;
- assigned-clock-rates : the phy core clk frequency, shall be: 50000000
- resets : a list of phandle + reset specifier pairs
- reset-names : string reset name, must be:
"uphy", "uphy-pipe", "uphy-tcphy"
- extcon : extcon specifier for the Power Delivery
Note, there are 2 type-c phys for RK3399, and they are almost identical, except
these registers(description below), every register node contains 3 sections:
offset, enable bit, write mask bit.
- rockchip,typec-conn-dir : the register of type-c connector direction,
for type-c phy0, it must be <0xe580 0 16>;
for type-c phy1, it must be <0xe58c 0 16>;
- rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2 enable
control.
for type-c phy0, it must be <0xe580 3 19>;
for type-c phy1, it must be <0xe58c 3 19>;
- rockchip,external-psm : the register of type-c phy external psm clock
selection.
for type-c phy0, it must be <0xe588 14 30>;
for type-c phy1, it must be <0xe594 14 30>;
- rockchip,pipe-status : the register of type-c phy pipe status.
for type-c phy0, it must be <0xe5c0 0 0>;
for type-c phy1, it must be <0xe5c0 16 16>;
Required nodes : a sub-node is required for each port the phy provides.
The sub-node name is used to identify dp or usb3 port,
and shall be the following entries:
* "dp-port" : the name of DP port.
* "usb3-port" : the name of USB3 port.
Required properties (port (child) node):
- #phy-cells : must be 0, See ./phy-bindings.txt for details.
Example:
tcphy0: phy@ff7c0000 {
compatible = "rockchip,rk3399-typec-phy";
reg = <0x0 0xff7c0000 0x0 0x40000>;
rockchip,grf = <&grf>;
extcon = <&fusb0>;
clocks = <&cru SCLK_UPHY0_TCPDCORE>,
<&cru SCLK_UPHY0_TCPDPHY_REF>;
clock-names = "tcpdcore", "tcpdphy-ref";
assigned-clocks = <&cru SCLK_UPHY0_TCPDCORE>;
assigned-clock-rates = <50000000>;
resets = <&cru SRST_UPHY0>,
<&cru SRST_UPHY0_PIPE_L00>,
<&cru SRST_P_UPHY0_TCPHY>;
reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
rockchip,typec-conn-dir = <0xe580 0 16>;
rockchip,usb3tousb2-en = <0xe580 3 19>;
rockchip,external-psm = <0xe588 14 30>;
rockchip,pipe-status = <0xe5c0 0 0>;
tcphy0_dp: dp-port {
#phy-cells = <0>;
};
tcphy0_usb3: usb3-port {
#phy-cells = <0>;
};
};
tcphy1: phy@ff800000 {
compatible = "rockchip,rk3399-typec-phy";
reg = <0x0 0xff800000 0x0 0x40000>;
rockchip,grf = <&grf>;
extcon = <&fusb1>;
clocks = <&cru SCLK_UPHY1_TCPDCORE>,
<&cru SCLK_UPHY1_TCPDPHY_REF>;
clock-names = "tcpdcore", "tcpdphy-ref";
assigned-clocks = <&cru SCLK_UPHY1_TCPDCORE>;
assigned-clock-rates = <50000000>;
resets = <&cru SRST_UPHY1>,
<&cru SRST_UPHY1_PIPE_L00>,
<&cru SRST_P_UPHY1_TCPHY>;
reset-names = "uphy", "uphy-pipe", "uphy-tcphy";
rockchip,typec-conn-dir = <0xe58c 0 16>;
rockchip,usb3tousb2-en = <0xe58c 3 19>;
rockchip,external-psm = <0xe594 14 30>;
rockchip,pipe-status = <0xe5c0 16 16>;
tcphy1_dp: dp-port {
#phy-cells = <0>;
};
tcphy1_usb3: usb3-port {
#phy-cells = <0>;
};
};

6
Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt
View File

@ -5,6 +5,8 @@ This file provides information on what the device node for the R-Car generation
Required properties:
- compatible: "renesas,usb2-phy-r8a7795" if the device is a part of an R8A7795
SoC.
"renesas,usb2-phy-r8a7796" if the device is a part of an R8A7796
SoC.
"renesas,rcar-gen3-usb2-phy" for a generic R-Car Gen3 compatible device.
@ -30,11 +32,11 @@ Example (R-Car H3):
compatible = "renesas,usb2-phy-r8a7795", "renesas,rcar-gen3-usb2-phy";
reg = <0 0xee080200 0 0x700>;
interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&mstp7_clks R8A7795_CLK_EHCI0>;
clocks = <&cpg CPG_MOD 703>;
};
usb-phy@ee0a0200 {
compatible = "renesas,usb2-phy-r8a7795", "renesas,rcar-gen3-usb2-phy";
reg = <0 0xee0a0200 0 0x700>;
clocks = <&mstp7_clks R8A7795_CLK_EHCI0>;
clocks = <&cpg CPG_MOD 702>;
};

31
Documentation/devicetree/bindings/phy/rockchip-pcie-phy.txt 100644
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@ -0,0 +1,31 @@
Rockchip PCIE PHY
-----------------------
Required properties:
- compatible: rockchip,rk3399-pcie-phy
- #phy-cells: must be 0
- clocks: Must contain an entry in clock-names.
See ../clocks/clock-bindings.txt for details.
- clock-names: Must be "refclk"
- resets: Must contain an entry in reset-names.
See ../reset/reset.txt for details.
- reset-names: Must be "phy"
Example:
grf: syscon@ff770000 {
compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
#address-cells = <1>;
#size-cells = <1>;
...
pcie_phy: pcie-phy {
compatible = "rockchip,rk3399-pcie-phy";
#phy-cells = <0>;
clocks = <&cru SCLK_PCIEPHY_REF>;
clock-names = "refclk";
resets = <&cru SRST_PCIEPHY>;
reset-names = "phy";
};
};

3
Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
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@ -27,6 +27,9 @@ Optional Properties:
- clocks : phandle + clock specifier for the phy clocks
- clock-names: string, clock name, must be "phyclk"
- #clock-cells: for users of the phy-pll, should be 0
- reset-names: Only allow the following entries:
- phy-reset
- resets: Must contain an entry for each entry in reset-names.
Example:

1
Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
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@ -10,6 +10,7 @@ Required properties:
* allwinner,sun8i-a23-usb-phy
* allwinner,sun8i-a33-usb-phy
* allwinner,sun8i-h3-usb-phy
* allwinner,sun50i-a64-usb-phy
- reg : a list of offset + length pairs
- reg-names :
* "phy_ctrl"

2
Documentation/devicetree/bindings/phy/ti-phy.txt
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@ -31,6 +31,8 @@ OMAP USB2 PHY
Required properties:
- compatible: Should be "ti,omap-usb2"
Should be "ti,dra7x-usb2" for the 1st instance of USB2 PHY on
DRA7x
Should be "ti,dra7x-usb2-phy2" for the 2nd instance of USB2 PHY
in DRA7x
- reg : Address and length of the register set for the device.

2
Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
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@ -81,6 +81,8 @@ i.mx specific properties
- fsl,usbmisc: phandler of non-core register device, with one
argument that indicate usb controller index
- disable-over-current: disable over current detect
- over-current-active-high: over current signal polarity is high active,
typically over current signal polarity is low active.
- external-vbus-divider: enables off-chip resistor divider for Vbus
Example:

5
Documentation/devicetree/bindings/usb/dwc2.txt
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@ -26,7 +26,10 @@ Refer to phy/phy-bindings.txt for generic phy consumer properties
- g-use-dma: enable dma usage in gadget driver.
- g-rx-fifo-size: size of rx fifo size in gadget mode.
- g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode.
- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode.
Deprecated properties:
- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0)
in gadget mode.
Example:

28
Documentation/devicetree/bindings/usb/dwc3-cavium.txt 100644
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@ -0,0 +1,28 @@
Cavium SuperSpeed DWC3 USB SoC controller
Required properties:
- compatible: Should contain "cavium,octeon-7130-usb-uctl"
Required child node:
A child node must exist to represent the core DWC3 IP block. The name of
the node is not important. The content of the node is defined in dwc3.txt.
Example device node:
uctl@1180069000000 {
compatible = "cavium,octeon-7130-usb-uctl";
reg = <0x00011800 0x69000000 0x00000000 0x00000100>;
ranges;
#address-cells = <0x00000002>;
#size-cells = <0x00000002>;
refclk-frequency = <0x05f5e100>;
refclk-type-ss = "dlmc_ref_clk0";
refclk-type-hs = "dlmc_ref_clk0";
power = <0x00000002 0x00000002 0x00000001>;
xhci@1690000000000 {
compatible = "cavium,octeon-7130-xhci", "synopsys,dwc3";
reg = <0x00016900 0x00000000 0x00000010 0x00000000>;
interrupt-parent = <0x00000010>;
interrupts = <0x00000009 0x00000004>;
};
};

8
Documentation/devicetree/bindings/usb/dwc3.txt
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@ -13,7 +13,8 @@ Optional properties:
in the array is expected to be a handle to the USB2/HS PHY and
the second element is expected to be a handle to the USB3/SS PHY
- phys: from the *Generic PHY* bindings
- phy-names: from the *Generic PHY* bindings
- phy-names: from the *Generic PHY* bindings; supported names are "usb2-phy"
or "usb3-phy".
- snps,usb3_lpm_capable: determines if platform is USB3 LPM capable
- snps,disable_scramble_quirk: true when SW should disable data scrambling.
Only really useful for FPGA builds.
@ -39,6 +40,11 @@ Optional properties:
disabling the suspend signal to the PHY.
- snps,dis_rxdet_inp3_quirk: when set core will disable receiver detection
in PHY P3 power state.
- snps,dis-u2-freeclk-exists-quirk: when set, clear the u2_freeclk_exists
in GUSB2PHYCFG, specify that USB2 PHY doesn't provide
a free-running PHY clock.
- snps,dis-del-phy-power-chg-quirk: when set core will change PHY power
from P0 to P1/P2/P3 without delay.
- snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
utmi_l1_suspend_n, false when asserts utmi_sleep_n
- snps,hird-threshold: HIRD threshold

6
Documentation/devicetree/bindings/usb/generic.txt
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@ -11,6 +11,11 @@ Optional properties:
"peripheral" and "otg". In case this attribute isn't
passed via DT, USB DRD controllers should default to
OTG.
- phy_type: tells USB controllers that we want to configure the core to support
a UTMI+ PHY with an 8- or 16-bit interface if UTMI+ is
selected. Valid arguments are "utmi" and "utmi_wide".
In case this isn't passed via DT, USB controllers should
default to HW capability.
- otg-rev: tells usb driver the release number of the OTG and EH supplement
with which the device and its descriptors are compliant,
in binary-coded decimal (i.e. 2.0 is 0200H). This
@ -34,6 +39,7 @@ dwc3@4a030000 {
usb-phy = <&usb2_phy>, <&usb3,phy>;
maximum-speed = "super-speed";
dr_mode = "otg";
phy_type = "utmi_wide";
otg-rev = <0x0200>;
adp-disable;
};

1
Documentation/devicetree/bindings/usb/renesas_usbhs.txt
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@ -9,6 +9,7 @@ Required properties:
- "renesas,usbhs-r8a7793" for r8a7793 (R-Car M2-N) compatible device
- "renesas,usbhs-r8a7794" for r8a7794 (R-Car E2) compatible device
- "renesas,usbhs-r8a7795" for r8a7795 (R-Car H3) compatible device
- "renesas,usbhs-r8a7796" for r8a7796 (R-Car M3-W) compatible device
- "renesas,rcar-gen2-usbhs" for R-Car Gen2 compatible device
- "renesas,rcar-gen3-usbhs" for R-Car Gen3 compatible device

59
Documentation/devicetree/bindings/usb/rockchip,dwc3.txt 100644
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@ -0,0 +1,59 @@
Rockchip SuperSpeed DWC3 USB SoC controller
Required properties:
- compatible: should contain "rockchip,rk3399-dwc3" for rk3399 SoC
- clocks: A list of phandle + clock-specifier pairs for the
clocks listed in clock-names
- clock-names: Should contain the following:
"ref_clk" Controller reference clk, have to be 24 MHz
"suspend_clk" Controller suspend clk, have to be 24 MHz or 32 KHz
"bus_clk" Master/Core clock, have to be >= 62.5 MHz for SS
operation and >= 30MHz for HS operation
"grf_clk" Controller grf clk
Required child node:
A child node must exist to represent the core DWC3 IP block. The name of
the node is not important. The content of the node is defined in dwc3.txt.
Phy documentation is provided in the following places:
Documentation/devicetree/bindings/phy/rockchip,dwc3-usb-phy.txt
Example device nodes:
usbdrd3_0: usb@fe800000 {
compatible = "rockchip,rk3399-dwc3";
clocks = <&cru SCLK_USB3OTG0_REF>, <&cru SCLK_USB3OTG0_SUSPEND>,
<&cru ACLK_USB3OTG0>, <&cru ACLK_USB3_GRF>;
clock-names = "ref_clk", "suspend_clk",
"bus_clk", "grf_clk";
#address-cells = <2>;
#size-cells = <2>;
ranges;
status = "disabled";
usbdrd_dwc3_0: dwc3@fe800000 {
compatible = "snps,dwc3";
reg = <0x0 0xfe800000 0x0 0x100000>;
interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
dr_mode = "otg";
status = "disabled";
};
};
usbdrd3_1: usb@fe900000 {
compatible = "rockchip,rk3399-dwc3";
clocks = <&cru SCLK_USB3OTG1_REF>, <&cru SCLK_USB3OTG1_SUSPEND>,
<&cru ACLK_USB3OTG1>, <&cru ACLK_USB3_GRF>;
clock-names = "ref_clk", "suspend_clk",
"bus_clk", "grf_clk";
#address-cells = <2>;
#size-cells = <2>;
ranges;
status = "disabled";
usbdrd_dwc3_1: dwc3@fe900000 {
compatible = "snps,dwc3";
reg = <0x0 0xfe900000 0x0 0x100000>;
interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
dr_mode = "otg";
status = "disabled";
};
};

19
Documentation/devicetree/bindings/usb/usb4604.txt 100644
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@ -0,0 +1,19 @@
SMSC USB4604 High-Speed Hub Controller
Required properties:
- compatible: Should be "smsc,usb4604"
Optional properties:
- reg: Specifies the i2c slave address, it is required and should be 0x2d
if I2C is used.
- reset-gpios: Should specify GPIO for reset.
- initial-mode: Should specify initial mode.
(1 for HUB mode, 2 for STANDBY mode)
Examples:
usb-hub@2d {
compatible = "smsc,usb4604";
reg = <0x2d>;
reset-gpios = <&gpx3 5 1>;
initial-mode = <1>;
};

1
Documentation/devicetree/bindings/usb/usbmisc-imx.txt
View File

@ -6,6 +6,7 @@ Required properties:
"fsl,imx6q-usbmisc" for imx6q
"fsl,vf610-usbmisc" for Vybrid vf610
"fsl,imx6sx-usbmisc" for imx6sx
"fsl,imx7d-usbmisc" for imx7d
- reg: Should contain registers location and length
Examples:

2
Documentation/kernel-parameters.txt
View File

@ -4248,6 +4248,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
u = IGNORE_UAS (don't bind to the uas driver);
w = NO_WP_DETECT (don't test whether the
medium is write-protected).
y = ALWAYS_SYNC (issue a SYNCHRONIZE_CACHE
even if the device claims no cache)
Example: quirks=0419:aaf5:rl,0421:0433:rc
user_debug= [KNL,ARM]

41
Documentation/leds/ledtrig-usbport.txt 100644
View File

@ -0,0 +1,41 @@
USB port LED trigger
====================
This LED trigger can be used for signalling to the user a presence of USB device
in a given port. It simply turns on LED when device appears and turns it off
when it disappears.
It requires selecting USB ports that should be observed. All available ones are
listed as separated entries in a "ports" subdirectory. Selecting is handled by
echoing "1" to a chosen port.
Please note that this trigger allows selecting multiple USB ports for a single
LED. This can be useful in two cases:
1) Device with single USB LED and few physical ports
In such a case LED will be turned on as long as there is at least one connected
USB device.
2) Device with a physical port handled by few controllers
Some devices may have one controller per PHY standard. E.g. USB 3.0 physical
port may be handled by ohci-platform, ehci-platform and xhci-hcd. If there is
only one LED user will most likely want to assign ports from all 3 hubs.
This trigger can be activated from user space on led class devices as shown
below:
echo usbport > trigger
This adds sysfs attributes to the LED that are documented in:
Documentation/ABI/testing/sysfs-class-led-trigger-usbport
Example use-case:
echo usbport > trigger
echo 1 > ports/usb1-port1
echo 1 > ports/usb2-port1
cat ports/usb1-port1
echo 0 > ports/usb1-port1

3
MAINTAINERS
View File

@ -12216,7 +12216,7 @@ S: Maintained
F: drivers/net/usb/lan78xx.*
USB MASS STORAGE DRIVER
M: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
M: Alan Stern <stern@rowland.harvard.edu>
L: linux-usb@vger.kernel.org
L: usb-storage@lists.one-eyed-alien.net
S: Maintained
@ -12300,6 +12300,7 @@ F: drivers/net/usb/rtl8150.c
USB SERIAL SUBSYSTEM
M: Johan Hovold <johan@kernel.org>
L: linux-usb@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git
S: Maintained
F: Documentation/usb/usb-serial.txt
F: drivers/usb/serial/

4
drivers/bluetooth/bcm203x.c
View File

@ -185,10 +185,8 @@ static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id
data->state = BCM203X_LOAD_MINIDRV;
data->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!data->urb) {
BT_ERR("Can't allocate URB");
if (!data->urb)
return -ENOMEM;
}
if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
BT_ERR("Mini driver request failed");

6
drivers/extcon/Kconfig
View File

@ -96,6 +96,12 @@ config EXTCON_PALMAS
Say Y here to enable support for USB peripheral and USB host
detection by palmas usb.
config EXTCON_QCOM_SPMI_MISC
tristate "Qualcomm USB extcon support"
help
Say Y here to enable SPMI PMIC based USB cable detection
support on Qualcomm PMICs such as PM8941.
config EXTCON_RT8973A
tristate "Richtek RT8973A EXTCON support"
depends on I2C

1
drivers/extcon/Makefile
View File

@ -14,6 +14,7 @@ obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o
obj-$(CONFIG_EXTCON_MAX77843) += extcon-max77843.o
obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o
obj-$(CONFIG_EXTCON_PALMAS) += extcon-palmas.o
obj-$(CONFIG_EXTCON_QCOM_SPMI_MISC) += extcon-qcom-spmi-misc.o
obj-$(CONFIG_EXTCON_RT8973A) += extcon-rt8973a.o
obj-$(CONFIG_EXTCON_SM5502) += extcon-sm5502.o
obj-$(CONFIG_EXTCON_USB_GPIO) += extcon-usb-gpio.o

27
drivers/extcon/extcon-adc-jack.c
View File

@ -3,6 +3,9 @@
*
* Analog Jack extcon driver with ADC-based detection capability.
*
* Copyright (C) 2016 Samsung Electronics
* Chanwoo Choi <cw00.choi@samsung.com>
*
* Copyright (C) 2012 Samsung Electronics
* MyungJoo Ham <myungjoo.ham@samsung.com>
*
@ -58,7 +61,7 @@ static void adc_jack_handler(struct work_struct *work)
struct adc_jack_data *data = container_of(to_delayed_work(work),
struct adc_jack_data,
handler);
u32 state = 0;
struct adc_jack_cond *def;
int ret, adc_val;
int i;
@ -70,17 +73,18 @@ static void adc_jack_handler(struct work_struct *work)
/* Get state from adc value with adc_conditions */
for (i = 0; i < data->num_conditions; i++) {
struct adc_jack_cond *def = &data->adc_conditions[i];
if (!def->state)
break;
def = &data->adc_conditions[i];
if (def->min_adc <= adc_val && def->max_adc >= adc_val) {
state = def->state;
break;
extcon_set_state_sync(data->edev, def->id, true);
return;
}
}
/* if no def has met, it means state = 0 (no cables attached) */
extcon_set_state(data->edev, state);
/* Set the detached state if adc value is not included in the range */
for (i = 0; i < data->num_conditions; i++) {
def = &data->adc_conditions[i];
extcon_set_state_sync(data->edev, def->id, false);
}
}
static irqreturn_t adc_jack_irq_thread(int irq, void *_data)
@ -114,16 +118,14 @@ static int adc_jack_probe(struct platform_device *pdev)
return -ENOMEM;
}
if (!pdata->adc_conditions ||
!pdata->adc_conditions[0].state) {
if (!pdata->adc_conditions) {
dev_err(&pdev->dev, "error: adc_conditions not defined.\n");
return -EINVAL;
}
data->adc_conditions = pdata->adc_conditions;
/* Check the length of array and set num_conditions */
for (i = 0; data->adc_conditions[i].state; i++)
;
for (i = 0; data->adc_conditions[i].id != EXTCON_NONE; i++);
data->num_conditions = i;
data->chan = iio_channel_get(&pdev->dev, pdata->consumer_channel);
@ -158,6 +160,7 @@ static int adc_jack_probe(struct platform_device *pdev)
if (data->wakeup_source)
device_init_wakeup(&pdev->dev, 1);
adc_jack_handler(&data->handler.work);
return 0;
}

27
drivers/extcon/extcon-arizona.c
View File

@ -183,7 +183,7 @@ static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
if (clamp)
val = ARIZONA_RMV_SHRT_HP1L;
break;
};
}
snd_soc_dapm_mutex_lock(arizona->dapm);
@ -614,7 +614,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
}
/* If the cable was removed while measuring ignore the result */
ret = extcon_get_cable_state_(info->edev, EXTCON_MECHANICAL);
ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
if (ret < 0) {
dev_err(arizona->dev, "Failed to check cable state: %d\n",
ret);
@ -649,7 +649,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
else
report = EXTCON_JACK_HEADPHONE;
ret = extcon_set_cable_state_(info->edev, report, true);
ret = extcon_set_state_sync(info->edev, report, true);
if (ret != 0)
dev_err(arizona->dev, "Failed to report HP/line: %d\n",
ret);
@ -732,7 +732,7 @@ err:
ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
/* Just report headphone */
ret = extcon_set_cable_state_(info->edev, EXTCON_JACK_HEADPHONE, true);
ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
if (ret != 0)
dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
@ -789,7 +789,7 @@ err:
ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC);
/* Just report headphone */
ret = extcon_set_cable_state_(info->edev, EXTCON_JACK_HEADPHONE, true);
ret = extcon_set_state_sync(info->edev, EXTCON_JACK_HEADPHONE, true);
if (ret != 0)
dev_err(arizona->dev, "Failed to report headphone: %d\n", ret);
@ -829,7 +829,7 @@ static void arizona_micd_detect(struct work_struct *work)
mutex_lock(&info->lock);
/* If the cable was removed while measuring ignore the result */
ret = extcon_get_cable_state_(info->edev, EXTCON_MECHANICAL);
ret = extcon_get_state(info->edev, EXTCON_MECHANICAL);
if (ret < 0) {
dev_err(arizona->dev, "Failed to check cable state: %d\n",
ret);
@ -914,7 +914,7 @@ static void arizona_micd_detect(struct work_struct *work)
arizona_identify_headphone(info);
ret = extcon_set_cable_state_(info->edev,
ret = extcon_set_state_sync(info->edev,
EXTCON_JACK_MICROPHONE, true);
if (ret != 0)
dev_err(arizona->dev, "Headset report failed: %d\n",
@ -1108,7 +1108,7 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
if (info->last_jackdet == present) {
dev_dbg(arizona->dev, "Detected jack\n");
ret = extcon_set_cable_state_(info->edev,
ret = extcon_set_state_sync(info->edev,
EXTCON_MECHANICAL, true);
if (ret != 0)
@ -1149,10 +1149,13 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
info->micd_ranges[i].key, 0);
input_sync(info->input);
ret = extcon_update_state(info->edev, 0xffffffff, 0);
if (ret != 0)
dev_err(arizona->dev, "Removal report failed: %d\n",
ret);
for (i = 0; i < ARRAY_SIZE(arizona_cable) - 1; i++) {
ret = extcon_set_state_sync(info->edev,
arizona_cable[i], false);
if (ret != 0)
dev_err(arizona->dev,
"Removal report failed: %d\n", ret);
}
regmap_update_bits(arizona->regmap,
ARIZONA_JACK_DETECT_DEBOUNCE,

8
drivers/extcon/extcon-axp288.c
View File

@ -189,19 +189,19 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
switch (chrg_type) {
case DET_STAT_SDP:
dev_dbg(info->dev, "sdp cable is connecetd\n");
dev_dbg(info->dev, "sdp cable is connected\n");
notify_otg = true;
notify_charger = true;
cable = EXTCON_CHG_USB_SDP;
break;
case DET_STAT_CDP:
dev_dbg(info->dev, "cdp cable is connecetd\n");
dev_dbg(info->dev, "cdp cable is connected\n");
notify_otg = true;
notify_charger = true;
cable = EXTCON_CHG_USB_CDP;
break;
case DET_STAT_DCP:
dev_dbg(info->dev, "dcp cable is connecetd\n");
dev_dbg(info->dev, "dcp cable is connected\n");
notify_charger = true;
cable = EXTCON_CHG_USB_DCP;
break;
@ -226,7 +226,7 @@ notify_otg:
}
if (notify_charger)
extcon_set_cable_state_(info->edev, cable, vbus_attach);
extcon_set_state_sync(info->edev, cable, vbus_attach);
/* Clear the flags on disconnect event */
if (!vbus_attach)

3
drivers/extcon/extcon-gpio.c
View File

@ -49,7 +49,8 @@ static void gpio_extcon_work(struct work_struct *work)
state = gpiod_get_value_cansleep(data->id_gpiod);
if (data->pdata->gpio_active_low)
state = !state;
extcon_set_state(data->edev, state);
extcon_set_state_sync(data->edev, data->pdata->extcon_id, state);
}
static irqreturn_t gpio_irq_handler(int irq, void *dev_id)

18
drivers/extcon/extcon-max14577.c
View File

@ -3,7 +3,7 @@
*
* Copyright (C) 2013,2014 Samsung Electronics
* Chanwoo Choi <cw00.choi@samsung.com>
* Krzysztof Kozlowski <k.kozlowski@samsung.com>
* Krzysztof Kozlowski <krzk@kernel.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -357,7 +357,7 @@ static int max14577_muic_jig_handler(struct max14577_muic_info *info,
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
return 0;
}
@ -454,24 +454,24 @@ static int max14577_muic_chg_handler(struct max14577_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_USB, attached);
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
break;
case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
attached);
break;
case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
attached);
break;
case MAX14577_CHARGER_TYPE_SPECIAL_500MA:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
attached);
break;
case MAX14577_CHARGER_TYPE_SPECIAL_1A:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
attached);
break;
case MAX14577_CHARGER_TYPE_NONE:
@ -791,6 +791,6 @@ static struct platform_driver max14577_muic_driver = {
module_platform_driver(max14577_muic_driver);
MODULE_DESCRIPTION("Maxim 14577/77836 Extcon driver");
MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>, Krzysztof Kozlowski <k.kozlowski@samsung.com>");
MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>, Krzysztof Kozlowski <krzk@kernel.org>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:extcon-max14577");

8
drivers/extcon/extcon-max3355.c
View File

@ -39,16 +39,16 @@ static irqreturn_t max3355_id_irq(int irq, void *dev_id)
* As we don't have event for USB peripheral cable attached,
* we simulate USB peripheral attach here.
*/
extcon_set_cable_state_(data->edev, EXTCON_USB_HOST, false);
extcon_set_cable_state_(data->edev, EXTCON_USB, true);
extcon_set_state_sync(data->edev, EXTCON_USB_HOST, false);
extcon_set_state_sync(data->edev, EXTCON_USB, true);
} else {
/*
* ID = 0 means USB HOST cable attached.
* As we don't have event for USB peripheral cable detached,
* we simulate USB peripheral detach here.
*/
extcon_set_cable_state_(data->edev, EXTCON_USB, false);
extcon_set_cable_state_(data->edev, EXTCON_USB_HOST, true);
extcon_set_state_sync(data->edev, EXTCON_USB, false);
extcon_set_state_sync(data->edev, EXTCON_USB_HOST, true);
}
return IRQ_HANDLED;

46
drivers/extcon/extcon-max77693.c
View File

@ -505,8 +505,8 @@ static int max77693_muic_dock_handler(struct max77693_muic_info *info,
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached);
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
extcon_set_state_sync(info->edev, EXTCON_DOCK, attached);
extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
goto out;
case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
dock_id = EXTCON_DOCK;
@ -514,8 +514,8 @@ static int max77693_muic_dock_handler(struct max77693_muic_info *info,
case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
dock_id = EXTCON_DOCK;
if (!attached) {
extcon_set_cable_state_(info->edev, EXTCON_USB, false);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_USB, false);
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
false);
}
break;
@ -530,7 +530,7 @@ static int max77693_muic_dock_handler(struct max77693_muic_info *info,
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, dock_id, attached);
extcon_set_state_sync(info->edev, dock_id, attached);
out:
return 0;
@ -596,7 +596,7 @@ static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
break;
case MAX77693_MUIC_GND_AV_CABLE_LOAD:
/* Audio Video Cable with load, PATH:AUDIO */
@ -604,14 +604,14 @@ static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
attached);
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_USB, attached);
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
break;
case MAX77693_MUIC_GND_MHL:
case MAX77693_MUIC_GND_MHL_VB:
/* MHL or MHL with USB/TA cable */
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
break;
default:
dev_err(info->dev, "failed to detect %s cable of gnd type\n",
@ -653,7 +653,7 @@ static int max77693_muic_jig_handler(struct max77693_muic_info *info,
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
return 0;
}
@ -807,10 +807,10 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
* - Support charging through micro-usb port without
* data connection
*/
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
attached);
if (!cable_attached)
extcon_set_cable_state_(info->edev,
extcon_set_state_sync(info->edev,
EXTCON_DISP_MHL, cable_attached);
break;
}
@ -834,13 +834,13 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
* - Support charging through micro-usb port without
* data connection.
*/
extcon_set_cable_state_(info->edev, EXTCON_USB,
extcon_set_state_sync(info->edev, EXTCON_USB,
attached);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
if (!cable_attached)
extcon_set_cable_state_(info->edev, EXTCON_DOCK,
extcon_set_state_sync(info->edev, EXTCON_DOCK,
cable_attached);
break;
case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
@ -869,9 +869,9 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_DOCK,
extcon_set_state_sync(info->edev, EXTCON_DOCK,
attached);
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL,
extcon_set_state_sync(info->edev, EXTCON_DISP_MHL,
attached);
break;
}
@ -905,28 +905,28 @@ static int max77693_muic_chg_handler(struct max77693_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB,
extcon_set_state_sync(info->edev, EXTCON_USB,
attached);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
break;
case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
/* Only TA cable */
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
attached);
break;
}
break;
case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
attached);
break;
case MAX77693_CHARGER_TYPE_APPLE_500MA:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
attached);
break;
case MAX77693_CHARGER_TYPE_APPLE_1A_2A:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
attached);
break;
case MAX77693_CHARGER_TYPE_DEAD_BATTERY:

22
drivers/extcon/extcon-max77843.c
View File

@ -346,7 +346,7 @@ static int max77843_muic_adc_gnd_handler(struct max77843_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
break;
case MAX77843_MUIC_GND_MHL_VB:
case MAX77843_MUIC_GND_MHL:
@ -356,7 +356,7 @@ static int max77843_muic_adc_gnd_handler(struct max77843_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
break;
default:
dev_err(info->dev, "failed to detect %s accessory(gnd:0x%x)\n",
@ -392,7 +392,7 @@ static int max77843_muic_jig_handler(struct max77843_muic_info *info,
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
return 0;
}
@ -486,8 +486,8 @@ static int max77843_muic_chg_handler(struct max77843_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_USB, attached);
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
break;
case MAX77843_MUIC_CHG_DOWNSTREAM:
@ -497,7 +497,7 @@ static int max77843_muic_chg_handler(struct max77843_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
attached);
break;
case MAX77843_MUIC_CHG_DEDICATED:
@ -507,7 +507,7 @@ static int max77843_muic_chg_handler(struct max77843_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
attached);
break;
case MAX77843_MUIC_CHG_SPECIAL_500MA:
@ -517,7 +517,7 @@ static int max77843_muic_chg_handler(struct max77843_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
attached);
break;
case MAX77843_MUIC_CHG_SPECIAL_1A:
@ -527,7 +527,7 @@ static int max77843_muic_chg_handler(struct max77843_muic_info *info)
if (ret < 0)
return ret;
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
attached);
break;
case MAX77843_MUIC_CHG_GND:
@ -536,10 +536,10 @@ static int max77843_muic_chg_handler(struct max77843_muic_info *info)
/* Charger cable on MHL accessory is attach or detach */
if (gnd_type == MAX77843_MUIC_GND_MHL_VB)
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
true);
else if (gnd_type == MAX77843_MUIC_GND_MHL)
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
false);
break;
case MAX77843_MUIC_CHG_NONE:

20
drivers/extcon/extcon-max8997.c
View File

@ -331,11 +331,11 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info,
switch (usb_type) {
case MAX8997_USB_HOST:
extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached);
extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
break;
case MAX8997_USB_DEVICE:
extcon_set_cable_state_(info->edev, EXTCON_USB, attached);
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_USB, attached);
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
break;
default:
@ -361,7 +361,7 @@ static int max8997_muic_handle_dock(struct max8997_muic_info *info,
switch (cable_type) {
case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:
case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:
extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached);
extcon_set_state_sync(info->edev, EXTCON_DOCK, attached);
break;
default:
dev_err(info->dev, "failed to detect %s dock device\n",
@ -384,7 +384,7 @@ static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
return ret;
}
extcon_set_cable_state_(info->edev, EXTCON_JIG, attached);
extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
return 0;
}
@ -406,7 +406,7 @@ static int max8997_muic_adc_handler(struct max8997_muic_info *info)
return ret;
break;
case MAX8997_MUIC_ADC_MHL:
extcon_set_cable_state_(info->edev, EXTCON_DISP_MHL, attached);
extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
break;
case MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF:
case MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON:
@ -489,19 +489,19 @@ static int max8997_muic_chg_handler(struct max8997_muic_info *info)
}
break;
case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_CDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
attached);
break;
case MAX8997_CHARGER_TYPE_DEDICATED_CHG:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_DCP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
attached);
break;
case MAX8997_CHARGER_TYPE_500MA:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SLOW,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
attached);
break;
case MAX8997_CHARGER_TYPE_1A:
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_FAST,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
attached);
break;
default:

16
drivers/extcon/extcon-palmas.c
View File

@ -61,7 +61,7 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
extcon_set_cable_state_(edev, EXTCON_USB, true);
extcon_set_state_sync(edev, EXTCON_USB, true);
dev_info(palmas_usb->dev, "USB cable is attached\n");
} else {
dev_dbg(palmas_usb->dev,
@ -70,7 +70,7 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
} else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state_(edev, EXTCON_USB, false);
extcon_set_state_sync(edev, EXTCON_USB, false);
dev_info(palmas_usb->dev, "USB cable is detached\n");
} else {
dev_dbg(palmas_usb->dev,
@ -98,7 +98,7 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
@ -106,17 +106,17 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
}
@ -137,10 +137,10 @@ static void palmas_gpio_id_detect(struct work_struct *work)
id = gpiod_get_value_cansleep(palmas_usb->id_gpiod);
if (id) {
extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
} else {
extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
}
}

170
drivers/extcon/extcon-qcom-spmi-misc.c 100644
View File

@ -0,0 +1,170 @@
/**
* extcon-qcom-spmi-misc.c - Qualcomm USB extcon driver to support USB ID
* detection based on extcon-usb-gpio.c.
*
* Copyright (C) 2016 Linaro, Ltd.
* Stephen Boyd <stephen.boyd@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/extcon.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#define USB_ID_DEBOUNCE_MS 5 /* ms */
struct qcom_usb_extcon_info {
struct extcon_dev *edev;
int irq;
struct delayed_work wq_detcable;
unsigned long debounce_jiffies;
};
static const unsigned int qcom_usb_extcon_cable[] = {
EXTCON_USB_HOST,
EXTCON_NONE,
};
static void qcom_usb_extcon_detect_cable(struct work_struct *work)
{
bool id;
int ret;
struct qcom_usb_extcon_info *info = container_of(to_delayed_work(work),
struct qcom_usb_extcon_info,
wq_detcable);
/* check ID and update cable state */
ret = irq_get_irqchip_state(info->irq, IRQCHIP_STATE_LINE_LEVEL, &id);
if (ret)
return;
extcon_set_state(info->edev, EXTCON_USB_HOST, !id);
}
static irqreturn_t qcom_usb_irq_handler(int irq, void *dev_id)
{
struct qcom_usb_extcon_info *info = dev_id;
queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
info->debounce_jiffies);
return IRQ_HANDLED;
}
static int qcom_usb_extcon_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct qcom_usb_extcon_info *info;
int ret;
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
info->edev = devm_extcon_dev_allocate(dev, qcom_usb_extcon_cable);
if (IS_ERR(info->edev)) {
dev_err(dev, "failed to allocate extcon device\n");
return -ENOMEM;
}
ret = devm_extcon_dev_register(dev, info->edev);
if (ret < 0) {
dev_err(dev, "failed to register extcon device\n");
return ret;
}
info->debounce_jiffies = msecs_to_jiffies(USB_ID_DEBOUNCE_MS);
INIT_DELAYED_WORK(&info->wq_detcable, qcom_usb_extcon_detect_cable);
info->irq = platform_get_irq_byname(pdev, "usb_id");
if (info->irq < 0)
return info->irq;
ret = devm_request_threaded_irq(dev, info->irq, NULL,
qcom_usb_irq_handler,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
pdev->name, info);
if (ret < 0) {
dev_err(dev, "failed to request handler for ID IRQ\n");
return ret;
}
platform_set_drvdata(pdev, info);
device_init_wakeup(dev, 1);
/* Perform initial detection */
qcom_usb_extcon_detect_cable(&info->wq_detcable.work);
return 0;
}
static int qcom_usb_extcon_remove(struct platform_device *pdev)
{
struct qcom_usb_extcon_info *info = platform_get_drvdata(pdev);
cancel_delayed_work_sync(&info->wq_detcable);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int qcom_usb_extcon_suspend(struct device *dev)
{
struct qcom_usb_extcon_info *info = dev_get_drvdata(dev);
int ret = 0;
if (device_may_wakeup(dev))
ret = enable_irq_wake(info->irq);
return ret;
}
static int qcom_usb_extcon_resume(struct device *dev)
{
struct qcom_usb_extcon_info *info = dev_get_drvdata(dev);
int ret = 0;
if (device_may_wakeup(dev))
ret = disable_irq_wake(info->irq);
return ret;
}
#endif
static SIMPLE_DEV_PM_OPS(qcom_usb_extcon_pm_ops,
qcom_usb_extcon_suspend, qcom_usb_extcon_resume);
static const struct of_device_id qcom_usb_extcon_dt_match[] = {
{ .compatible = "qcom,pm8941-misc", },
{ }
};
MODULE_DEVICE_TABLE(of, qcom_usb_extcon_dt_match);
static struct platform_driver qcom_usb_extcon_driver = {
.probe = qcom_usb_extcon_probe,
.remove = qcom_usb_extcon_remove,
.driver = {
.name = "extcon-pm8941-misc",
.pm = &qcom_usb_extcon_pm_ops,
.of_match_table = qcom_usb_extcon_dt_match,
},
};
module_platform_driver(qcom_usb_extcon_driver);
MODULE_DESCRIPTION("QCOM USB ID extcon driver");
MODULE_AUTHOR("Stephen Boyd <stephen.boyd@linaro.org>");
MODULE_LICENSE("GPL v2");

4
drivers/extcon/extcon-rt8973a.c
View File

@ -398,9 +398,9 @@ static int rt8973a_muic_cable_handler(struct rt8973a_muic_info *info,
return ret;
/* Change the state of external accessory */
extcon_set_cable_state_(info->edev, id, attached);
extcon_set_state_sync(info->edev, id, attached);
if (id == EXTCON_USB)
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
return 0;

4
drivers/extcon/extcon-sm5502.c
View File

@ -411,9 +411,9 @@ static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
return ret;
/* Change the state of external accessory */
extcon_set_cable_state_(info->edev, id, attached);
extcon_set_state_sync(info->edev, id, attached);
if (id == EXTCON_USB)
extcon_set_cable_state_(info->edev, EXTCON_CHG_USB_SDP,
extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
attached);
return 0;

8
drivers/extcon/extcon-usb-gpio.c
View File

@ -63,16 +63,16 @@ static void usb_extcon_detect_cable(struct work_struct *work)
* As we don't have event for USB peripheral cable attached,
* we simulate USB peripheral attach here.
*/
extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, false);
extcon_set_cable_state_(info->edev, EXTCON_USB, true);
extcon_set_state_sync(info->edev, EXTCON_USB_HOST, false);
extcon_set_state_sync(info->edev, EXTCON_USB, true);
} else {
/*
* ID = 0 means USB HOST cable attached.
* As we don't have event for USB peripheral cable detached,
* we simulate USB peripheral detach here.
*/
extcon_set_cable_state_(info->edev, EXTCON_USB, false);
extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, true);
extcon_set_state_sync(info->edev, EXTCON_USB, false);
extcon_set_state_sync(info->edev, EXTCON_USB_HOST, true);
}
}

828
drivers/extcon/extcon.c
View File

@ -38,43 +38,159 @@
#define SUPPORTED_CABLE_MAX 32
#define CABLE_NAME_MAX 30
static const char *extcon_name[] = {
[EXTCON_NONE] = "NONE",
struct __extcon_info {
unsigned int type;
unsigned int id;
const char *name;
} extcon_info[] = {
[EXTCON_NONE] = {
.type = EXTCON_TYPE_MISC,
.id = EXTCON_NONE,
.name = "NONE",
},
/* USB external connector */
[EXTCON_USB] = "USB",
[EXTCON_USB_HOST] = "USB-HOST",
[EXTCON_USB] = {
.type = EXTCON_TYPE_USB,
.id = EXTCON_USB,
.name = "USB",
},
[EXTCON_USB_HOST] = {
.type = EXTCON_TYPE_USB,
.id = EXTCON_USB_HOST,
.name = "USB_HOST",
},
/* Charging external connector */
[EXTCON_CHG_USB_SDP] = "SDP",
[EXTCON_CHG_USB_DCP] = "DCP",
[EXTCON_CHG_USB_CDP] = "CDP",
[EXTCON_CHG_USB_ACA] = "ACA",
[EXTCON_CHG_USB_FAST] = "FAST-CHARGER",
[EXTCON_CHG_USB_SLOW] = "SLOW-CHARGER",
[EXTCON_CHG_USB_SDP] = {
.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
.id = EXTCON_CHG_USB_SDP,
.name = "SDP",
},
[EXTCON_CHG_USB_DCP] = {
.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
.id = EXTCON_CHG_USB_DCP,
.name = "DCP",
},
[EXTCON_CHG_USB_CDP] = {
.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
.id = EXTCON_CHG_USB_CDP,
.name = "CDP",
},
[EXTCON_CHG_USB_ACA] = {
.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
.id = EXTCON_CHG_USB_ACA,
.name = "ACA",
},
[EXTCON_CHG_USB_FAST] = {
.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
.id = EXTCON_CHG_USB_FAST,
.name = "FAST-CHARGER",
},
[EXTCON_CHG_USB_SLOW] = {
.type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
.id = EXTCON_CHG_USB_SLOW,
.name = "SLOW-CHARGER",
},
[EXTCON_CHG_WPT] = {
.type = EXTCON_TYPE_CHG,
.id = EXTCON_CHG_WPT,
.name = "WPT",
},
/* Jack external connector */
[EXTCON_JACK_MICROPHONE] = "MICROPHONE",
[EXTCON_JACK_HEADPHONE] = "HEADPHONE",
[EXTCON_JACK_LINE_IN] = "LINE-IN",
[EXTCON_JACK_LINE_OUT] = "LINE-OUT",
[EXTCON_JACK_VIDEO_IN] = "VIDEO-IN",
[EXTCON_JACK_VIDEO_OUT] = "VIDEO-OUT",
[EXTCON_JACK_SPDIF_IN] = "SPDIF-IN",
[EXTCON_JACK_SPDIF_OUT] = "SPDIF-OUT",
[EXTCON_JACK_MICROPHONE] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_MICROPHONE,
.name = "MICROPHONE",
},
[EXTCON_JACK_HEADPHONE] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_HEADPHONE,
.name = "HEADPHONE",
},
[EXTCON_JACK_LINE_IN] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_LINE_IN,
.name = "LINE-IN",
},
[EXTCON_JACK_LINE_OUT] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_LINE_OUT,
.name = "LINE-OUT",
},
[EXTCON_JACK_VIDEO_IN] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_VIDEO_IN,
.name = "VIDEO-IN",
},
[EXTCON_JACK_VIDEO_OUT] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_VIDEO_OUT,
.name = "VIDEO-OUT",
},
[EXTCON_JACK_SPDIF_IN] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_SPDIF_IN,
.name = "SPDIF-IN",
},
[EXTCON_JACK_SPDIF_OUT] = {
.type = EXTCON_TYPE_JACK,
.id = EXTCON_JACK_SPDIF_OUT,
.name = "SPDIF-OUT",
},
/* Display external connector */
[EXTCON_DISP_HDMI] = "HDMI",
[EXTCON_DISP_MHL] = "MHL",
[EXTCON_DISP_DVI] = "DVI",
[EXTCON_DISP_VGA] = "VGA",
[EXTCON_DISP_HDMI] = {
.type = EXTCON_TYPE_DISP,
.id = EXTCON_DISP_HDMI,
.name = "HDMI",
},
[EXTCON_DISP_MHL] = {
.type = EXTCON_TYPE_DISP,
.id = EXTCON_DISP_MHL,
.name = "MHL",
},
[EXTCON_DISP_DVI] = {
.type = EXTCON_TYPE_DISP,
.id = EXTCON_DISP_DVI,
.name = "DVI",
},
[EXTCON_DISP_VGA] = {
.type = EXTCON_TYPE_DISP,
.id = EXTCON_DISP_VGA,
.name = "VGA",
},
[EXTCON_DISP_DP] = {
.type = EXTCON_TYPE_DISP | EXTCON_TYPE_USB,
.id = EXTCON_DISP_DP,
.name = "DP",
},
[EXTCON_DISP_HMD] = {
.type = EXTCON_TYPE_DISP | EXTCON_TYPE_USB,
.id = EXTCON_DISP_HMD,
.name = "HMD",
},
/* Miscellaneous external connector */
[EXTCON_DOCK] = "DOCK",
[EXTCON_JIG] = "JIG",
[EXTCON_MECHANICAL] = "MECHANICAL",
[EXTCON_DOCK] = {
.type = EXTCON_TYPE_MISC,
.id = EXTCON_DOCK,
.name = "DOCK",
},
[EXTCON_JIG] = {
.type = EXTCON_TYPE_MISC,
.id = EXTCON_JIG,
.name = "JIG",
},
[EXTCON_MECHANICAL] = {
.type = EXTCON_TYPE_MISC,
.id = EXTCON_MECHANICAL,
.name = "MECHANICAL",
},
NULL,
{ /* sentinel */ }
};
/**
@ -95,6 +211,16 @@ struct extcon_cable {
struct device_attribute attr_state;
struct attribute *attrs[3]; /* to be fed to attr_g.attrs */
union extcon_property_value usb_propval[EXTCON_PROP_USB_CNT];
union extcon_property_value chg_propval[EXTCON_PROP_CHG_CNT];
union extcon_property_value jack_propval[EXTCON_PROP_JACK_CNT];
union extcon_property_value disp_propval[EXTCON_PROP_DISP_CNT];
unsigned long usb_bits[BITS_TO_LONGS(EXTCON_PROP_USB_CNT)];
unsigned long chg_bits[BITS_TO_LONGS(EXTCON_PROP_CHG_CNT)];
unsigned long jack_bits[BITS_TO_LONGS(EXTCON_PROP_JACK_CNT)];
unsigned long disp_bits[BITS_TO_LONGS(EXTCON_PROP_DISP_CNT)];
};
static struct class *extcon_class;
@ -147,14 +273,93 @@ static int find_cable_index_by_id(struct extcon_dev *edev, const unsigned int id
return -EINVAL;
}
static bool is_extcon_changed(u32 prev, u32 new, int idx, bool *attached)
static int get_extcon_type(unsigned int prop)
{
if (((prev >> idx) & 0x1) != ((new >> idx) & 0x1)) {
*attached = ((new >> idx) & 0x1) ? true : false;
return true;
switch (prop) {
case EXTCON_PROP_USB_MIN ... EXTCON_PROP_USB_MAX:
return EXTCON_TYPE_USB;
case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
return EXTCON_TYPE_CHG;
case EXTCON_PROP_JACK_MIN ... EXTCON_PROP_JACK_MAX:
return EXTCON_TYPE_JACK;
case EXTCON_PROP_DISP_MIN ... EXTCON_PROP_DISP_MAX:
return EXTCON_TYPE_DISP;
default:
return -EINVAL;
}
}
static bool is_extcon_attached(struct extcon_dev *edev, unsigned int index)
{
return !!(edev->state & BIT(index));
}
static bool is_extcon_changed(struct extcon_dev *edev, int index,
bool new_state)
{
int state = !!(edev->state & BIT(index));
return (state != new_state);
}
static bool is_extcon_property_supported(unsigned int id, unsigned int prop)
{
int type;
/* Check whether the property is supported or not. */
type = get_extcon_type(prop);
if (type < 0)
return false;
/* Check whether a specific extcon id supports the property or not. */
return !!(extcon_info[id].type & type);
}
static int is_extcon_property_capability(struct extcon_dev *edev,
unsigned int id, int index,unsigned int prop)
{
struct extcon_cable *cable;
int type, ret;
/* Check whether the property is supported or not. */
type = get_extcon_type(prop);
if (type < 0)
return type;
cable = &edev->cables[index];
switch (type) {
case EXTCON_TYPE_USB:
ret = test_bit(prop - EXTCON_PROP_USB_MIN, cable->usb_bits);
break;
case EXTCON_TYPE_CHG:
ret = test_bit(prop - EXTCON_PROP_CHG_MIN, cable->chg_bits);
break;
case EXTCON_TYPE_JACK:
ret = test_bit(prop - EXTCON_PROP_JACK_MIN, cable->jack_bits);
break;
case EXTCON_TYPE_DISP:
ret = test_bit(prop - EXTCON_PROP_DISP_MIN, cable->disp_bits);
break;
default:
ret = -EINVAL;
}
return false;
return ret;
}
static void init_property(struct extcon_dev *edev, unsigned int id, int index)
{
unsigned int type = extcon_info[id].type;
struct extcon_cable *cable = &edev->cables[index];
if (EXTCON_TYPE_USB & type)
memset(cable->usb_propval, 0, sizeof(cable->usb_propval));
if (EXTCON_TYPE_CHG & type)
memset(cable->chg_propval, 0, sizeof(cable->chg_propval));
if (EXTCON_TYPE_JACK & type)
memset(cable->jack_propval, 0, sizeof(cable->jack_propval));
if (EXTCON_TYPE_DISP & type)
memset(cable->disp_propval, 0, sizeof(cable->disp_propval));
}
static ssize_t state_show(struct device *dev, struct device_attribute *attr,
@ -168,32 +373,13 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
for (i = 0; i < edev->max_supported; i++) {
count += sprintf(buf + count, "%s=%d\n",
extcon_name[edev->supported_cable[i]],
extcon_info[edev->supported_cable[i]].name,
!!(edev->state & (1 << i)));
}
return count;
}
static ssize_t state_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
u32 state;
ssize_t ret = 0;
struct extcon_dev *edev = dev_get_drvdata(dev);
ret = sscanf(buf, "0x%x", &state);
if (ret == 0)
ret = -EINVAL;
else
ret = extcon_set_state(edev, state);
if (ret < 0)
return ret;
return count;
}
static DEVICE_ATTR_RW(state);
static DEVICE_ATTR_RO(state);
static ssize_t name_show(struct device *dev, struct device_attribute *attr,
char *buf)
@ -212,7 +398,7 @@ static ssize_t cable_name_show(struct device *dev,
int i = cable->cable_index;
return sprintf(buf, "%s\n",
extcon_name[cable->edev->supported_cable[i]]);
extcon_info[cable->edev->supported_cable[i]].name);
}
static ssize_t cable_state_show(struct device *dev,
@ -224,26 +410,17 @@ static ssize_t cable_state_show(struct device *dev,
int i = cable->cable_index;
return sprintf(buf, "%d\n",
extcon_get_cable_state_(cable->edev,
cable->edev->supported_cable[i]));
extcon_get_state(cable->edev, cable->edev->supported_cable[i]));
}
/**
* extcon_update_state() - Update the cable attach states of the extcon device
* only for the masked bits.
* @edev: the extcon device
* @mask: the bit mask to designate updated bits.
* @state: new cable attach status for @edev
* extcon_sync() - Synchronize the states for both the attached/detached
* @edev: the extcon device that has the cable.
*
* Changing the state sends uevent with environment variable containing
* the name of extcon device (envp[0]) and the state output (envp[1]).
* Tizen uses this format for extcon device to get events from ports.
* Android uses this format as well.
*
* Note that the notifier provides which bits are changed in the state
* variable with the val parameter (second) to the callback.
* This function send a notification to synchronize the all states of a
* specific external connector
*/
int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
int extcon_sync(struct extcon_dev *edev, unsigned int id)
{
char name_buf[120];
char state_buf[120];
@ -252,100 +429,8 @@ int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state)
int env_offset = 0;
int length;
int index;
int state;
unsigned long flags;
bool attached;
if (!edev)
return -EINVAL;
spin_lock_irqsave(&edev->lock, flags);
if (edev->state != ((edev->state & ~mask) | (state & mask))) {
u32 old_state;
if (check_mutually_exclusive(edev, (edev->state & ~mask) |
(state & mask))) {
spin_unlock_irqrestore(&edev->lock, flags);
return -EPERM;
}
old_state = edev->state;
edev->state &= ~mask;
edev->state |= state & mask;
for (index = 0; index < edev->max_supported; index++) {
if (is_extcon_changed(old_state, edev->state, index,
&attached))
raw_notifier_call_chain(&edev->nh[index],
attached, edev);
}
/* This could be in interrupt handler */
prop_buf = (char *)get_zeroed_page(GFP_ATOMIC);
if (prop_buf) {
length = name_show(&edev->dev, NULL, prop_buf);
if (length > 0) {
if (prop_buf[length - 1] == '\n')
prop_buf[length - 1] = 0;
snprintf(name_buf, sizeof(name_buf),
"NAME=%s", prop_buf);
envp[env_offset++] = name_buf;
}
length = state_show(&edev->dev, NULL, prop_buf);
if (length > 0) {
if (prop_buf[length - 1] == '\n')
prop_buf[length - 1] = 0;
snprintf(state_buf, sizeof(state_buf),
"STATE=%s", prop_buf);
envp[env_offset++] = state_buf;
}
envp[env_offset] = NULL;
/* Unlock early before uevent */
spin_unlock_irqrestore(&edev->lock, flags);
kobject_uevent_env(&edev->dev.kobj, KOBJ_CHANGE, envp);
free_page((unsigned long)prop_buf);
} else {
/* Unlock early before uevent */
spin_unlock_irqrestore(&edev->lock, flags);
dev_err(&edev->dev, "out of memory in extcon_set_state\n");
kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
}
} else {
/* No changes */
spin_unlock_irqrestore(&edev->lock, flags);
}
return 0;
}
EXPORT_SYMBOL_GPL(extcon_update_state);
/**
* extcon_set_state() - Set the cable attach states of the extcon device.
* @edev: the extcon device
* @state: new cable attach status for @edev
*
* Note that notifier provides which bits are changed in the state
* variable with the val parameter (second) to the callback.
*/
int extcon_set_state(struct extcon_dev *edev, u32 state)
{
if (!edev)
return -EINVAL;
return extcon_update_state(edev, 0xffffffff, state);
}
EXPORT_SYMBOL_GPL(extcon_set_state);
/**
* extcon_get_cable_state_() - Get the status of a specific cable.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector in extcon enumeration.
*/
int extcon_get_cable_state_(struct extcon_dev *edev, const unsigned int id)
{
int index;
if (!edev)
return -EINVAL;
@ -354,26 +439,92 @@ int extcon_get_cable_state_(struct extcon_dev *edev, const unsigned int id)
if (index < 0)
return index;
if (edev->max_supported && edev->max_supported <= index)
return -EINVAL;
spin_lock_irqsave(&edev->lock, flags);
return !!(edev->state & (1 << index));
state = !!(edev->state & BIT(index));
raw_notifier_call_chain(&edev->nh[index], state, edev);
/* This could be in interrupt handler */
prop_buf = (char *)get_zeroed_page(GFP_ATOMIC);
if (!prop_buf) {
/* Unlock early before uevent */
spin_unlock_irqrestore(&edev->lock, flags);
dev_err(&edev->dev, "out of memory in extcon_set_state\n");
kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
return 0;
}
length = name_show(&edev->dev, NULL, prop_buf);
if (length > 0) {
if (prop_buf[length - 1] == '\n')
prop_buf[length - 1] = 0;
snprintf(name_buf, sizeof(name_buf), "NAME=%s", prop_buf);
envp[env_offset++] = name_buf;
}
length = state_show(&edev->dev, NULL, prop_buf);
if (length > 0) {
if (prop_buf[length - 1] == '\n')
prop_buf[length - 1] = 0;
snprintf(state_buf, sizeof(state_buf), "STATE=%s", prop_buf);
envp[env_offset++] = state_buf;
}
envp[env_offset] = NULL;
/* Unlock early before uevent */
spin_unlock_irqrestore(&edev->lock, flags);
kobject_uevent_env(&edev->dev.kobj, KOBJ_CHANGE, envp);
free_page((unsigned long)prop_buf);
return 0;
}
EXPORT_SYMBOL_GPL(extcon_get_cable_state_);
EXPORT_SYMBOL_GPL(extcon_sync);
/**
* extcon_set_cable_state_() - Set the status of a specific cable.
* extcon_get_state() - Get the state of a external connector.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector in extcon enumeration.
*/
int extcon_get_state(struct extcon_dev *edev, const unsigned int id)
{
int index, state;
unsigned long flags;
if (!edev)
return -EINVAL;
index = find_cable_index_by_id(edev, id);
if (index < 0)
return index;
spin_lock_irqsave(&edev->lock, flags);
state = is_extcon_attached(edev, index);
spin_unlock_irqrestore(&edev->lock, flags);
return state;
}
EXPORT_SYMBOL_GPL(extcon_get_state);
/**
* extcon_set_state() - Set the state of a external connector.
* without a notification.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector
* in extcon enumeration.
* @state: the new cable status. The default semantics is
* true: attached / false: detached.
*
* This function only set the state of a external connector without
* a notification. To synchronize the data of a external connector,
* use extcon_set_state_sync() and extcon_sync().
*/
int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int id,
int extcon_set_state(struct extcon_dev *edev, unsigned int id,
bool cable_state)
{
u32 state;
int index;
unsigned long flags;
int index, ret = 0;
if (!edev)
return -EINVAL;
@ -382,13 +533,338 @@ int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int id,
if (index < 0)
return index;
if (edev->max_supported && edev->max_supported <= index)
spin_lock_irqsave(&edev->lock, flags);
/* Check whether the external connector's state is changed. */
if (!is_extcon_changed(edev, index, cable_state))
goto out;
if (check_mutually_exclusive(edev,
(edev->state & ~BIT(index)) | (cable_state & BIT(index)))) {
ret = -EPERM;
goto out;
}
/*
* Initialize the value of extcon property before setting
* the detached state for an external connector.
*/
if (!cable_state)
init_property(edev, id, index);
/* Update the state for a external connector. */
if (cable_state)
edev->state |= BIT(index);
else
edev->state &= ~(BIT(index));
out:
spin_unlock_irqrestore(&edev->lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(extcon_set_state);
/**
* extcon_set_state_sync() - Set the state of a external connector
* with a notification.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector
* in extcon enumeration.
* @state: the new cable status. The default semantics is
* true: attached / false: detached.
*
* This function set the state of external connector and synchronize the data
* by usning a notification.
*/
int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id,
bool cable_state)
{
int ret, index;
unsigned long flags;
index = find_cable_index_by_id(edev, id);
if (index < 0)
return index;
/* Check whether the external connector's state is changed. */
spin_lock_irqsave(&edev->lock, flags);
ret = is_extcon_changed(edev, index, cable_state);
spin_unlock_irqrestore(&edev->lock, flags);
if (!ret)
return 0;
ret = extcon_set_state(edev, id, cable_state);
if (ret < 0)
return ret;
return extcon_sync(edev, id);
}
EXPORT_SYMBOL_GPL(extcon_set_state_sync);
/**
* extcon_get_property() - Get the property value of a specific cable.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector
* in extcon enumeration.
* @prop: the property id among enum extcon_property.
* @prop_val: the pointer which store the value of property.
*
* When getting the property value of external connector, the external connector
* should be attached. If detached state, function just return 0 without
* property value. Also, the each property should be included in the list of
* supported properties according to the type of external connectors.
*
* Returns 0 if success or error number if fail
*/
int extcon_get_property(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value *prop_val)
{
struct extcon_cable *cable;
unsigned long flags;
int index, ret = 0;
*prop_val = (union extcon_property_value)(0);
if (!edev)
return -EINVAL;
state = cable_state ? (1 << index) : 0;
return extcon_update_state(edev, 1 << index, state);
/* Check whether the property is supported or not */
if (!is_extcon_property_supported(id, prop))
return -EINVAL;
/* Find the cable index of external connector by using id */
index = find_cable_index_by_id(edev, id);
if (index < 0)
return index;
spin_lock_irqsave(&edev->lock, flags);
/* Check whether the property is available or not. */
if (!is_extcon_property_capability(edev, id, index, prop)) {
spin_unlock_irqrestore(&edev->lock, flags);
return -EPERM;
}
/*
* Check whether the external connector is attached.
* If external connector is detached, the user can not
* get the property value.
*/
if (!is_extcon_attached(edev, index)) {
spin_unlock_irqrestore(&edev->lock, flags);
return 0;
}
cable = &edev->cables[index];
/* Get the property value according to extcon type */
switch (prop) {
case EXTCON_PROP_USB_MIN ... EXTCON_PROP_USB_MAX:
*prop_val = cable->usb_propval[prop - EXTCON_PROP_USB_MIN];
break;
case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
*prop_val = cable->chg_propval[prop - EXTCON_PROP_CHG_MIN];
break;
case EXTCON_PROP_JACK_MIN ... EXTCON_PROP_JACK_MAX:
*prop_val = cable->jack_propval[prop - EXTCON_PROP_JACK_MIN];
break;
case EXTCON_PROP_DISP_MIN ... EXTCON_PROP_DISP_MAX:
*prop_val = cable->disp_propval[prop - EXTCON_PROP_DISP_MIN];
break;
default:
ret = -EINVAL;
break;
}
spin_unlock_irqrestore(&edev->lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(extcon_set_cable_state_);
EXPORT_SYMBOL_GPL(extcon_get_property);
/**
* extcon_set_property() - Set the property value of a specific cable.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector
* in extcon enumeration.
* @prop: the property id among enum extcon_property.
* @prop_val: the pointer including the new value of property.
*
* The each property should be included in the list of supported properties
* according to the type of external connectors.
*
* Returns 0 if success or error number if fail
*/
int extcon_set_property(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value prop_val)
{
struct extcon_cable *cable;
unsigned long flags;
int index, ret = 0;
if (!edev)
return -EINVAL;
/* Check whether the property is supported or not */
if (!is_extcon_property_supported(id, prop))
return -EINVAL;
/* Find the cable index of external connector by using id */
index = find_cable_index_by_id(edev, id);
if (index < 0)
return index;
spin_lock_irqsave(&edev->lock, flags);
/* Check whether the property is available or not. */
if (!is_extcon_property_capability(edev, id, index, prop)) {
spin_unlock_irqrestore(&edev->lock, flags);
return -EPERM;
}
cable = &edev->cables[index];
/* Set the property value according to extcon type */
switch (prop) {
case EXTCON_PROP_USB_MIN ... EXTCON_PROP_USB_MAX:
cable->usb_propval[prop - EXTCON_PROP_USB_MIN] = prop_val;
break;
case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
cable->chg_propval[prop - EXTCON_PROP_CHG_MIN] = prop_val;
break;
case EXTCON_PROP_JACK_MIN ... EXTCON_PROP_JACK_MAX:
cable->jack_propval[prop - EXTCON_PROP_JACK_MIN] = prop_val;
break;
case EXTCON_PROP_DISP_MIN ... EXTCON_PROP_DISP_MAX:
cable->disp_propval[prop - EXTCON_PROP_DISP_MIN] = prop_val;
break;
default:
ret = -EINVAL;
break;
}
spin_unlock_irqrestore(&edev->lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(extcon_set_property);
/**
* extcon_set_property_sync() - Set the property value of a specific cable
with a notification.
* @prop_val: the pointer including the new value of property.
*
* When setting the property value of external connector, the external connector
* should be attached. The each property should be included in the list of
* supported properties according to the type of external connectors.
*
* Returns 0 if success or error number if fail
*/
int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value prop_val)
{
int ret;
ret = extcon_set_property(edev, id, prop, prop_val);
if (ret < 0)
return ret;
return extcon_sync(edev, id);
}
EXPORT_SYMBOL_GPL(extcon_set_property_sync);
/**
* extcon_get_property_capability() - Get the capability of property
* of an external connector.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector
* in extcon enumeration.
* @prop: the property id among enum extcon_property.
*
* Returns 1 if the property is available or 0 if not available.
*/
int extcon_get_property_capability(struct extcon_dev *edev, unsigned int id,
unsigned int prop)
{
int index;
if (!edev)
return -EINVAL;
/* Check whether the property is supported or not */
if (!is_extcon_property_supported(id, prop))
return -EINVAL;
/* Find the cable index of external connector by using id */
index = find_cable_index_by_id(edev, id);
if (index < 0)
return index;
return is_extcon_property_capability(edev, id, index, prop);
}
EXPORT_SYMBOL_GPL(extcon_get_property_capability);
/**
* extcon_set_property_capability() - Set the capability of a property
* of an external connector.
* @edev: the extcon device that has the cable.
* @id: the unique id of each external connector
* in extcon enumeration.
* @prop: the property id among enum extcon_property.
*
* This function set the capability of a property for an external connector
* to mark the bit in capability bitmap which mean the available state of
* a property.
*
* Returns 0 if success or error number if fail
*/
int extcon_set_property_capability(struct extcon_dev *edev, unsigned int id,
unsigned int prop)
{
struct extcon_cable *cable;
int index, type, ret = 0;
if (!edev)
return -EINVAL;
/* Check whether the property is supported or not. */
if (!is_extcon_property_supported(id, prop))
return -EINVAL;
/* Find the cable index of external connector by using id. */
index = find_cable_index_by_id(edev, id);
if (index < 0)
return index;
type = get_extcon_type(prop);
if (type < 0)
return type;
cable = &edev->cables[index];
switch (type) {
case EXTCON_TYPE_USB:
__set_bit(prop - EXTCON_PROP_USB_MIN, cable->usb_bits);
break;
case EXTCON_TYPE_CHG:
__set_bit(prop - EXTCON_PROP_CHG_MIN, cable->chg_bits);
break;
case EXTCON_TYPE_JACK:
__set_bit(prop - EXTCON_PROP_JACK_MIN, cable->jack_bits);
break;
case EXTCON_TYPE_DISP:
__set_bit(prop - EXTCON_PROP_DISP_MIN, cable->disp_bits);
break;
default:
ret = -EINVAL;
}
return ret;
}
EXPORT_SYMBOL_GPL(extcon_set_property_capability);
/**
* extcon_get_extcon_dev() - Get the extcon device instance from the name
@ -428,7 +904,7 @@ int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,
struct notifier_block *nb)
{
unsigned long flags;
int ret, idx;
int ret, idx = -EINVAL;
if (!nb)
return -EINVAL;
@ -846,13 +1322,13 @@ struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index)
return ERR_PTR(-EINVAL);
if (!dev->of_node) {
dev_err(dev, "device does not have a device node entry\n");
dev_dbg(dev, "device does not have a device node entry\n");
return ERR_PTR(-EINVAL);
}
node = of_parse_phandle(dev->of_node, "extcon", index);
if (!node) {
dev_err(dev, "failed to get phandle in %s node\n",
dev_dbg(dev, "failed to get phandle in %s node\n",
dev->of_node->full_name);
return ERR_PTR(-ENODEV);
}

1
drivers/media/dvb-frontends/rtl2832_sdr.c
View File

@ -392,7 +392,6 @@ static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev)
dev_dbg(&pdev->dev, "alloc urb=%d\n", i);
dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
if (!dev->urb_list[i]) {
dev_dbg(&pdev->dev, "failed\n");
for (j = 0; j < i; j++)
usb_free_urb(dev->urb_list[j]);
return -ENOMEM;

1
drivers/media/radio/si470x/radio-si470x-usb.c
View File

@ -627,7 +627,6 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
radio->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!radio->int_in_urb) {
dev_info(&intf->dev, "could not allocate int_in_urb");
retval = -ENOMEM;
goto err_intbuffer;
}

13
drivers/media/rc/imon.c
View File

@ -2211,16 +2211,11 @@ static struct imon_context *imon_init_intf0(struct usb_interface *intf,
goto exit;
}
rx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!rx_urb) {
dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__);
if (!rx_urb)
goto rx_urb_alloc_failed;
}
tx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!tx_urb) {
dev_err(dev, "%s: usb_alloc_urb failed for display urb",
__func__);
if (!tx_urb)
goto tx_urb_alloc_failed;
}
mutex_init(&ictx->lock);
spin_lock_init(&ictx->kc_lock);
@ -2305,10 +2300,8 @@ static struct imon_context *imon_init_intf1(struct usb_interface *intf,
int ret = -ENOMEM;
rx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!rx_urb) {
pr_err("usb_alloc_urb failed for IR urb\n");
if (!rx_urb)
goto rx_urb_alloc_failed;
}
mutex_lock(&ictx->lock);

4
drivers/media/rc/redrat3.c
View File

@ -970,10 +970,8 @@ static int redrat3_dev_probe(struct usb_interface *intf,
/* set up bulk-in endpoint */
rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!rr3->read_urb) {
dev_err(dev, "Read urb allocation failure\n");
if (!rr3->read_urb)
goto error;
}
rr3->ep_in = ep_in;
rr3->bulk_in_buf = usb_alloc_coherent(udev,

1
drivers/media/usb/airspy/airspy.c
View File

@ -426,7 +426,6 @@ static int airspy_alloc_urbs(struct airspy *s)
dev_dbg(s->dev, "alloc urb=%d\n", i);
s->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
if (!s->urb_list[i]) {
dev_dbg(s->dev, "failed\n");
for (j = 0; j < i; j++)
usb_free_urb(s->urb_list[j]);
return -ENOMEM;

2
drivers/media/usb/as102/as102_usb_drv.c
View File

@ -270,8 +270,6 @@ static int as102_alloc_usb_stream_buffer(struct as102_dev_t *dev)
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (urb == NULL) {
dev_dbg(&dev->bus_adap.usb_dev->dev,
"%s: usb_alloc_urb failed\n", __func__);
as102_free_usb_stream_buffer(dev);
return -ENOMEM;
}

1
drivers/media/usb/au0828/au0828-video.c
View File

@ -245,7 +245,6 @@ static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
urb = usb_alloc_urb(max_packets, GFP_KERNEL);
if (!urb) {
au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
au0828_uninit_isoc(dev);
return -ENOMEM;
}

1
drivers/media/usb/cpia2/cpia2_usb.c
View File

@ -662,7 +662,6 @@ static int submit_urbs(struct camera_data *cam)
}
urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
if (!urb) {
ERR("%s: usb_alloc_urb error!\n", __func__);
for (j = 0; j < i; j++)
usb_free_urb(cam->sbuf[j].urb);
return -ENOMEM;

2
drivers/media/usb/cx231xx/cx231xx-audio.c
View File

@ -293,7 +293,6 @@ static int cx231xx_init_audio_isoc(struct cx231xx *dev)
memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
urb = usb_alloc_urb(CX231XX_ISO_NUM_AUDIO_PACKETS, GFP_ATOMIC);
if (!urb) {
dev_err(dev->dev, "usb_alloc_urb failed!\n");
for (j = 0; j < i; j++) {
usb_free_urb(dev->adev.urb[j]);
kfree(dev->adev.transfer_buffer[j]);
@ -355,7 +354,6 @@ static int cx231xx_init_audio_bulk(struct cx231xx *dev)
memset(dev->adev.transfer_buffer[i], 0x80, sb_size);
urb = usb_alloc_urb(CX231XX_NUM_AUDIO_PACKETS, GFP_ATOMIC);
if (!urb) {
dev_err(dev->dev, "usb_alloc_urb failed!\n");
for (j = 0; j < i; j++) {
usb_free_urb(dev->adev.urb[j]);
kfree(dev->adev.transfer_buffer[j]);

4
drivers/media/usb/cx231xx/cx231xx-core.c
View File

@ -1035,8 +1035,6 @@ int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
for (i = 0; i < dev->video_mode.isoc_ctl.num_bufs; i++) {
urb = usb_alloc_urb(max_packets, GFP_KERNEL);
if (!urb) {
dev_err(dev->dev,
"cannot alloc isoc_ctl.urb %i\n", i);
cx231xx_uninit_isoc(dev);
return -ENOMEM;
}
@ -1172,8 +1170,6 @@ int cx231xx_init_bulk(struct cx231xx *dev, int max_packets,
for (i = 0; i < dev->video_mode.bulk_ctl.num_bufs; i++) {
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
dev_err(dev->dev,
"cannot alloc bulk_ctl.urb %i\n", i);
cx231xx_uninit_bulk(dev);
return -ENOMEM;
}

2
drivers/media/usb/cx231xx/cx231xx-vbi.c
View File

@ -442,8 +442,6 @@ int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
dev_err(dev->dev,
"cannot alloc bulk_ctl.urb %i\n", i);
cx231xx_uninit_vbi_isoc(dev);
return -ENOMEM;
}

4
drivers/media/usb/dvb-usb/dib0700_core.c
View File

@ -783,10 +783,8 @@ int dib0700_rc_setup(struct dvb_usb_device *d, struct usb_interface *intf)
/* Starting in firmware 1.20, the RC info is provided on a bulk pipe */
purb = usb_alloc_urb(0, GFP_KERNEL);
if (purb == NULL) {
err("rc usb alloc urb failed");
if (purb == NULL)
return -ENOMEM;
}
purb->transfer_buffer = kzalloc(RC_MSG_SIZE_V1_20, GFP_KERNEL);
if (purb->transfer_buffer == NULL) {

1
drivers/media/usb/em28xx/em28xx-audio.c
View File

@ -850,7 +850,6 @@ static int em28xx_audio_urb_init(struct em28xx *dev)
urb = usb_alloc_urb(npackets, GFP_ATOMIC);
if (!urb) {
em28xx_errdev("usb_alloc_urb failed!\n");
em28xx_audio_free_urb(dev);
return -ENOMEM;
}

1
drivers/media/usb/em28xx/em28xx-core.c
View File

@ -934,7 +934,6 @@ int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
for (i = 0; i < usb_bufs->num_bufs; i++) {
urb = usb_alloc_urb(usb_bufs->num_packets, GFP_KERNEL);
if (!urb) {
em28xx_err("cannot alloc usb_ctl.urb %i\n", i);
em28xx_uninit_usb_xfer(dev, mode);
return -ENOMEM;
}

4
drivers/media/usb/gspca/benq.c
View File

@ -95,10 +95,8 @@ static int sd_start(struct gspca_dev *gspca_dev)
#define SD_NPKT 32
for (n = 0; n < 4; n++) {
urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
if (!urb) {
pr_err("usb_alloc_urb failed\n");
if (!urb)
return -ENOMEM;
}
gspca_dev->urb[n] = urb;
urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
SD_PKT_SZ * SD_NPKT,

4
drivers/media/usb/gspca/gspca.c
View File

@ -795,10 +795,8 @@ static int create_urbs(struct gspca_dev *gspca_dev,
for (n = 0; n < nurbs; n++) {
urb = usb_alloc_urb(npkt, GFP_KERNEL);
if (!urb) {
pr_err("usb_alloc_urb failed\n");
if (!urb)
return -ENOMEM;
}
gspca_dev->urb[n] = urb;
urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
bsize,

4
drivers/media/usb/gspca/konica.c
View File

@ -208,10 +208,8 @@ static int sd_start(struct gspca_dev *gspca_dev)
packet_size =
le16_to_cpu(alt->endpoint[i].desc.wMaxPacketSize);
urb = usb_alloc_urb(SD_NPKT, GFP_KERNEL);
if (!urb) {
pr_err("usb_alloc_urb failed\n");
if (!urb)
return -ENOMEM;
}
gspca_dev->urb[n] = urb;
urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
packet_size * SD_NPKT,

1
drivers/media/usb/hackrf/hackrf.c
View File

@ -691,7 +691,6 @@ static int hackrf_alloc_urbs(struct hackrf_dev *dev, bool rcv)
dev_dbg(dev->dev, "alloc urb=%d\n", i);
dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
if (!dev->urb_list[i]) {
dev_dbg(dev->dev, "failed\n");
for (j = 0; j < i; j++)
usb_free_urb(dev->urb_list[j]);
return -ENOMEM;

4
drivers/media/usb/hdpvr/hdpvr-video.c
View File

@ -155,10 +155,8 @@ int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
buf->dev = dev;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
if (!urb)
goto exit_urb;
}
buf->urb = urb;
mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,

1
drivers/media/usb/msi2500/msi2500.c
View File

@ -509,7 +509,6 @@ static int msi2500_isoc_init(struct msi2500_dev *dev)
for (i = 0; i < MAX_ISO_BUFS; i++) {
urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
if (urb == NULL) {
dev_err(dev->dev, "Failed to allocate urb %d\n", i);
msi2500_isoc_cleanup(dev);
return -ENOMEM;
}

1
drivers/media/usb/pwc/pwc-if.c
View File

@ -410,7 +410,6 @@ retry:
for (i = 0; i < MAX_ISO_BUFS; i++) {
urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
if (urb == NULL) {
PWC_ERROR("Failed to allocate urb %d\n", i);
pwc_isoc_cleanup(pdev);
return -ENOMEM;
}

9
drivers/media/usb/s2255/s2255drv.c
View File

@ -2113,11 +2113,8 @@ static int s2255_start_readpipe(struct s2255_dev *dev)
pipe_info->state = 1;
pipe_info->err_count = 0;
pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!pipe_info->stream_urb) {
dev_err(&dev->udev->dev,
"ReadStream: Unable to alloc URB\n");
if (!pipe_info->stream_urb)
return -ENOMEM;
}
/* transfer buffer allocated in board_init */
usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
pipe,
@ -2290,10 +2287,8 @@ static int s2255_probe(struct usb_interface *interface,
}
dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->fw_data->fw_urb) {
dev_err(&interface->dev, "out of memory!\n");
if (!dev->fw_data->fw_urb)
goto errorFWURB;
}
dev->fw_data->pfw_data = kzalloc(CHUNK_SIZE, GFP_KERNEL);
if (!dev->fw_data->pfw_data) {

4
drivers/media/usb/stk1160/stk1160-video.c
View File

@ -457,10 +457,8 @@ int stk1160_alloc_isoc(struct stk1160 *dev)
for (i = 0; i < num_bufs; i++) {
urb = usb_alloc_urb(max_packets, GFP_KERNEL);
if (!urb) {
stk1160_err("cannot alloc urb[%d]\n", i);
if (!urb)
goto free_i_bufs;
}
dev->isoc_ctl.urb[i] = urb;
#ifndef CONFIG_DMA_NONCOHERENT

4
drivers/media/usb/stkwebcam/stk-webcam.c
View File

@ -452,10 +452,8 @@ static int stk_prepare_iso(struct stk_camera *dev)
STK_ERROR("isobuf data already allocated\n");
if (dev->isobufs[i].urb == NULL) {
urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
if (urb == NULL) {
STK_ERROR("Failed to allocate URB %d\n", i);
if (urb == NULL)
goto isobufs_out;
}
dev->isobufs[i].urb = urb;
} else {
STK_ERROR("Killing URB\n");

4
drivers/media/usb/tm6000/tm6000-dvb.c
View File

@ -129,10 +129,8 @@ static int tm6000_start_stream(struct tm6000_core *dev)
}
dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
if (dvb->bulk_urb == NULL) {
printk(KERN_ERR "tm6000: couldn't allocate urb\n");
if (dvb->bulk_urb == NULL)
return -ENOMEM;
}
pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK);

1
drivers/media/usb/tm6000/tm6000-video.c
View File

@ -635,7 +635,6 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
urb = usb_alloc_urb(max_packets, GFP_KERNEL);
if (!urb) {
tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
tm6000_uninit_isoc(dev);
usb_free_urb(urb);
return -ENOMEM;

5
drivers/media/usb/usbvision/usbvision-core.c
View File

@ -2303,11 +2303,8 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
struct urb *urb;
urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
if (urb == NULL) {
dev_err(&usbvision->dev->dev,
"%s: usb_alloc_urb() failed\n", __func__);
if (urb == NULL)
return -ENOMEM;
}
usbvision->sbuf[buf_idx].urb = urb;
usbvision->sbuf[buf_idx].data =
usb_alloc_coherent(usbvision->dev,

4
drivers/media/usb/zr364xx/zr364xx.c
View File

@ -1045,10 +1045,8 @@ static int zr364xx_start_readpipe(struct zr364xx_camera *cam)
pipe_info->state = 1;
pipe_info->err_count = 0;
pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!pipe_info->stream_urb) {
dev_err(&cam->udev->dev, "ReadStream: Unable to alloc URB\n");
if (!pipe_info->stream_urb)
return -ENOMEM;
}
/* transfer buffer allocated in board_init */
usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev,
pipe,

2
drivers/mmc/host/vub300.c
View File

@ -2116,13 +2116,11 @@ static int vub300_probe(struct usb_interface *interface,
command_out_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!command_out_urb) {
retval = -ENOMEM;
dev_err(&udev->dev, "not enough memory for command_out_urb\n");
goto error0;
}
command_res_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!command_res_urb) {
retval = -ENOMEM;
dev_err(&udev->dev, "not enough memory for command_res_urb\n");
goto error1;
}
/* this also allocates memory for our VUB300 mmc host device */

36
drivers/phy/Kconfig
View File

@ -24,6 +24,15 @@ config PHY_BCM_NS_USB2
Enable this to support Broadcom USB 2.0 PHY connected to the USB
controller on Northstar family.
config PHY_BCM_NS_USB3
tristate "Broadcom Northstar USB 3.0 PHY Driver"
depends on ARCH_BCM_IPROC || COMPILE_TEST
depends on HAS_IOMEM && OF
select GENERIC_PHY
help
Enable this to support Broadcom USB 3.0 PHY connected to the USB
controller on Northstar family.
config PHY_BERLIN_USB
tristate "Marvell Berlin USB PHY Driver"
depends on ARCH_BERLIN && RESET_CONTROLLER && HAS_IOMEM && OF
@ -258,7 +267,9 @@ config PHY_SUN4I_USB
depends on RESET_CONTROLLER
depends on EXTCON
depends on POWER_SUPPLY
depends on USB_SUPPORT
select GENERIC_PHY
select USB_COMMON
help
Enable this to support the transceiver that is part of Allwinner
sunxi SoCs.
@ -358,6 +369,14 @@ config PHY_ROCKCHIP_USB
help
Enable this to support the Rockchip USB 2.0 PHY.
config PHY_ROCKCHIP_INNO_USB2
tristate "Rockchip INNO USB2PHY Driver"
depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OF
depends on COMMON_CLK
select GENERIC_PHY
help
Support for Rockchip USB2.0 PHY with Innosilicon IP block.
config PHY_ROCKCHIP_EMMC
tristate "Rockchip EMMC PHY Driver"
depends on ARCH_ROCKCHIP && OF
@ -372,6 +391,23 @@ config PHY_ROCKCHIP_DP
help
Enable this to support the Rockchip Display Port PHY.
config PHY_ROCKCHIP_PCIE
tristate "Rockchip PCIe PHY Driver"
depends on (ARCH_ROCKCHIP && OF) || COMPILE_TEST
select GENERIC_PHY
select MFD_SYSCON
help
Enable this to support the Rockchip PCIe PHY.
config PHY_ROCKCHIP_TYPEC
tristate "Rockchip TYPEC PHY Driver"
depends on OF && (ARCH_ROCKCHIP || COMPILE_TEST)
select EXTCON
select GENERIC_PHY
select RESET_CONTROLLER
help
Enable this to support the Rockchip USB TYPEC PHY.
config PHY_ST_SPEAR1310_MIPHY
tristate "ST SPEAR1310-MIPHY driver"
select GENERIC_PHY

4
drivers/phy/Makefile
View File

@ -4,6 +4,7 @@
obj-$(CONFIG_GENERIC_PHY) += phy-core.o
obj-$(CONFIG_PHY_BCM_NS_USB2) += phy-bcm-ns-usb2.o
obj-$(CONFIG_PHY_BCM_NS_USB3) += phy-bcm-ns-usb3.o
obj-$(CONFIG_PHY_BERLIN_USB) += phy-berlin-usb.o
obj-$(CONFIG_PHY_BERLIN_SATA) += phy-berlin-sata.o
obj-$(CONFIG_PHY_DA8XX_USB) += phy-da8xx-usb.o
@ -39,8 +40,11 @@ phy-exynos-usb2-$(CONFIG_PHY_S5PV210_USB2) += phy-s5pv210-usb2.o
obj-$(CONFIG_PHY_EXYNOS5_USBDRD) += phy-exynos5-usbdrd.o
obj-$(CONFIG_PHY_QCOM_APQ8064_SATA) += phy-qcom-apq8064-sata.o
obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o
obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2) += phy-rockchip-inno-usb2.o
obj-$(CONFIG_PHY_ROCKCHIP_EMMC) += phy-rockchip-emmc.o
obj-$(CONFIG_PHY_ROCKCHIP_PCIE) += phy-rockchip-pcie.o
obj-$(CONFIG_PHY_ROCKCHIP_DP) += phy-rockchip-dp.o
obj-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o
obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o
obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o
obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o

274
drivers/phy/phy-bcm-ns-usb3.c 100644
View File

@ -0,0 +1,274 @@
/*
* Broadcom Northstar USB 3.0 PHY Driver
*
* Copyright (C) 2016 Rafał Miłecki <rafal@milecki.pl>
*
* All magic values used for initialization (and related comments) were obtained
* from Broadcom's SDK:
* Copyright (c) Broadcom Corp, 2012
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/bcma/bcma.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/phy/phy.h>
#include <linux/slab.h>
#define BCM_NS_USB3_MII_MNG_TIMEOUT_US 1000 /* usecs */
enum bcm_ns_family {
BCM_NS_UNKNOWN,
BCM_NS_AX,
BCM_NS_BX,
};
struct bcm_ns_usb3 {
struct device *dev;
enum bcm_ns_family family;
void __iomem *dmp;
void __iomem *ccb_mii;
struct phy *phy;
};
static const struct of_device_id bcm_ns_usb3_id_table[] = {
{
.compatible = "brcm,ns-ax-usb3-phy",
.data = (int *)BCM_NS_AX,
},
{
.compatible = "brcm,ns-bx-usb3-phy",
.data = (int *)BCM_NS_BX,
},
{},
};
MODULE_DEVICE_TABLE(of, bcm_ns_usb3_id_table);
static int bcm_ns_usb3_wait_reg(struct bcm_ns_usb3 *usb3, void __iomem *addr,
u32 mask, u32 value, unsigned long timeout)
{
unsigned long deadline = jiffies + timeout;
u32 val;
do {
val = readl(addr);
if ((val & mask) == value)
return 0;
cpu_relax();
udelay(10);
} while (!time_after_eq(jiffies, deadline));
dev_err(usb3->dev, "Timeout waiting for register %p\n", addr);
return -EBUSY;
}
static inline int bcm_ns_usb3_mii_mng_wait_idle(struct bcm_ns_usb3 *usb3)
{
return bcm_ns_usb3_wait_reg(usb3, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL,
0x0100, 0x0000,
usecs_to_jiffies(BCM_NS_USB3_MII_MNG_TIMEOUT_US));
}
static int bcm_ns_usb3_mii_mng_write32(struct bcm_ns_usb3 *usb3, u32 value)
{
int err;
err = bcm_ns_usb3_mii_mng_wait_idle(usb3);
if (err < 0) {
dev_err(usb3->dev, "Couldn't write 0x%08x value\n", value);
return err;
}
writel(value, usb3->ccb_mii + BCMA_CCB_MII_MNG_CMD_DATA);
return 0;
}
static int bcm_ns_usb3_phy_init_ns_bx(struct bcm_ns_usb3 *usb3)
{
int err;
/* Enable MDIO. Setting MDCDIV as 26 */
writel(0x0000009a, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL);
/* Wait for MDIO? */
udelay(2);
/* USB3 PLL Block */
err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000);
if (err < 0)
return err;
/* Assert Ana_Pllseq start */
bcm_ns_usb3_mii_mng_write32(usb3, 0x58061000);
/* Assert CML Divider ratio to 26 */
bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400);
/* Asserting PLL Reset */
bcm_ns_usb3_mii_mng_write32(usb3, 0x582ec000);
/* Deaaserting PLL Reset */
bcm_ns_usb3_mii_mng_write32(usb3, 0x582e8000);
/* Waiting MII Mgt interface idle */
bcm_ns_usb3_mii_mng_wait_idle(usb3);
/* Deasserting USB3 system reset */
writel(0, usb3->dmp + BCMA_RESET_CTL);
/* PLL frequency monitor enable */
bcm_ns_usb3_mii_mng_write32(usb3, 0x58069000);
/* PIPE Block */
bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8060);
/* CMPMAX & CMPMINTH setting */
bcm_ns_usb3_mii_mng_write32(usb3, 0x580af30d);
/* DEGLITCH MIN & MAX setting */
bcm_ns_usb3_mii_mng_write32(usb3, 0x580e6302);
/* TXPMD block */
bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040);
/* Enabling SSC */
bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003);
/* Waiting MII Mgt interface idle */
bcm_ns_usb3_mii_mng_wait_idle(usb3);
return 0;
}
static int bcm_ns_usb3_phy_init_ns_ax(struct bcm_ns_usb3 *usb3)
{
int err;
/* Enable MDIO. Setting MDCDIV as 26 */
writel(0x0000009a, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL);
/* Wait for MDIO? */
udelay(2);
/* PLL30 block */
err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000);
if (err < 0)
return err;
bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400);
bcm_ns_usb3_mii_mng_write32(usb3, 0x587e80e0);
bcm_ns_usb3_mii_mng_write32(usb3, 0x580a009c);
/* Enable SSC */
bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040);
bcm_ns_usb3_mii_mng_write32(usb3, 0x580a21d3);
bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003);
/* Waiting MII Mgt interface idle */
bcm_ns_usb3_mii_mng_wait_idle(usb3);
/* Deasserting USB3 system reset */
writel(0, usb3->dmp + BCMA_RESET_CTL);
return 0;
}
static int bcm_ns_usb3_phy_init(struct phy *phy)
{
struct bcm_ns_usb3 *usb3 = phy_get_drvdata(phy);
int err;
/* Perform USB3 system soft reset */
writel(BCMA_RESET_CTL_RESET, usb3->dmp + BCMA_RESET_CTL);
switch (usb3->family) {
case BCM_NS_AX:
err = bcm_ns_usb3_phy_init_ns_ax(usb3);
break;
case BCM_NS_BX:
err = bcm_ns_usb3_phy_init_ns_bx(usb3);
break;
default:
WARN_ON(1);
err = -ENOTSUPP;
}
return err;
}
static const struct phy_ops ops = {
.init = bcm_ns_usb3_phy_init,
.owner = THIS_MODULE,
};
static int bcm_ns_usb3_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
const struct of_device_id *of_id;
struct bcm_ns_usb3 *usb3;
struct resource *res;
struct phy_provider *phy_provider;
usb3 = devm_kzalloc(dev, sizeof(*usb3), GFP_KERNEL);
if (!usb3)
return -ENOMEM;
usb3->dev = dev;
of_id = of_match_device(bcm_ns_usb3_id_table, dev);
if (!of_id)
return -EINVAL;
usb3->family = (enum bcm_ns_family)of_id->data;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmp");
usb3->dmp = devm_ioremap_resource(dev, res);
if (IS_ERR(usb3->dmp)) {
dev_err(dev, "Failed to map DMP regs\n");
return PTR_ERR(usb3->dmp);
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ccb-mii");
usb3->ccb_mii = devm_ioremap_resource(dev, res);
if (IS_ERR(usb3->ccb_mii)) {
dev_err(dev, "Failed to map ChipCommon B MII regs\n");
return PTR_ERR(usb3->ccb_mii);
}
usb3->phy = devm_phy_create(dev, NULL, &ops);
if (IS_ERR(usb3->phy)) {
dev_err(dev, "Failed to create PHY\n");
return PTR_ERR(usb3->phy);
}
phy_set_drvdata(usb3->phy, usb3);
platform_set_drvdata(pdev, usb3);
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
if (!IS_ERR(phy_provider))
dev_info(dev, "Registered Broadcom Northstar USB 3.0 PHY driver\n");
return PTR_ERR_OR_ZERO(phy_provider);
}
static struct platform_driver bcm_ns_usb3_driver = {
.probe = bcm_ns_usb3_probe,
.driver = {
.name = "bcm_ns_usb3",
.of_match_table = bcm_ns_usb3_id_table,
},
};
module_platform_driver(bcm_ns_usb3_driver);
MODULE_LICENSE("GPL v2");

28
drivers/phy/phy-bcm-ns2-pcie.c
View File

@ -18,11 +18,6 @@
#include <linux/phy.h>
#include <linux/phy/phy.h>
struct ns2_pci_phy {
struct mdio_device *mdiodev;
struct phy *phy;
};
#define BLK_ADDR_REG_OFFSET 0x1f
#define PLL_AFE1_100MHZ_BLK 0x2100
#define PLL_CLK_AMP_OFFSET 0x03
@ -30,17 +25,17 @@ struct ns2_pci_phy {
static int ns2_pci_phy_init(struct phy *p)
{
struct ns2_pci_phy *phy = phy_get_drvdata(p);
struct mdio_device *mdiodev = phy_get_drvdata(p);
int rc;
/* select the AFE 100MHz block page */
rc = mdiobus_write(phy->mdiodev->bus, phy->mdiodev->addr,
rc = mdiobus_write(mdiodev->bus, mdiodev->addr,
BLK_ADDR_REG_OFFSET, PLL_AFE1_100MHZ_BLK);
if (rc)
goto err;
/* set the 100 MHz reference clock amplitude to 2.05 v */
rc = mdiobus_write(phy->mdiodev->bus, phy->mdiodev->addr,
rc = mdiobus_write(mdiodev->bus, mdiodev->addr,
PLL_CLK_AMP_OFFSET, PLL_CLK_AMP_2P05V);
if (rc)
goto err;
@ -48,19 +43,19 @@ static int ns2_pci_phy_init(struct phy *p)
return 0;
err:
dev_err(&phy->mdiodev->dev, "Error %d writing to phy\n", rc);
dev_err(&mdiodev->dev, "Error %d writing to phy\n", rc);
return rc;
}
static struct phy_ops ns2_pci_phy_ops = {
static const struct phy_ops ns2_pci_phy_ops = {
.init = ns2_pci_phy_init,
.owner = THIS_MODULE,
};
static int ns2_pci_phy_probe(struct mdio_device *mdiodev)
{
struct device *dev = &mdiodev->dev;
struct phy_provider *provider;
struct ns2_pci_phy *p;
struct phy *phy;
phy = devm_phy_create(dev, dev->of_node, &ns2_pci_phy_ops);
@ -69,16 +64,7 @@ static int ns2_pci_phy_probe(struct mdio_device *mdiodev)
return PTR_ERR(phy);
}
p = devm_kmalloc(dev, sizeof(struct ns2_pci_phy),
GFP_KERNEL);
if (!p)
return -ENOMEM;
p->mdiodev = mdiodev;
dev_set_drvdata(dev, p);
p->phy = phy;
phy_set_drvdata(phy, p);
phy_set_drvdata(phy, mdiodev);
provider = devm_of_phy_provider_register(&phy->dev,
of_phy_simple_xlate);

15
drivers/phy/phy-core.c
View File

@ -357,6 +357,21 @@ int phy_set_mode(struct phy *phy, enum phy_mode mode)
}
EXPORT_SYMBOL_GPL(phy_set_mode);
int phy_reset(struct phy *phy)
{
int ret;
if (!phy || !phy->ops->reset)
return 0;
mutex_lock(&phy->mutex);
ret = phy->ops->reset(phy);
mutex_unlock(&phy->mutex);
return ret;
}
EXPORT_SYMBOL_GPL(phy_reset);
/**
* _of_phy_get() - lookup and obtain a reference to a phy by phandle
* @np: device_node for which to get the phy

2
drivers/phy/phy-da8xx-usb.c
View File

@ -154,7 +154,7 @@ static int da8xx_usb_phy_probe(struct platform_device *pdev)
d_phy->regmap = syscon_regmap_lookup_by_compatible(
"ti,da830-cfgchip");
else
d_phy->regmap = syscon_regmap_lookup_by_pdevname("syscon.0");
d_phy->regmap = syscon_regmap_lookup_by_pdevname("syscon");
if (IS_ERR(d_phy->regmap)) {
dev_err(dev, "Failed to get syscon\n");
return PTR_ERR(d_phy->regmap);

4
drivers/phy/phy-exynos5-usbdrd.c
View File

@ -249,7 +249,7 @@ static void exynos5_usbdrd_phy_isol(struct phy_usb_instance *inst,
static unsigned int
exynos5_usbdrd_pipe3_set_refclk(struct phy_usb_instance *inst)
{
static u32 reg;
u32 reg;
struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
/* restore any previous reference clock settings */
@ -295,7 +295,7 @@ exynos5_usbdrd_pipe3_set_refclk(struct phy_usb_instance *inst)
static unsigned int
exynos5_usbdrd_utmi_set_refclk(struct phy_usb_instance *inst)
{
static u32 reg;
u32 reg;
struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
/* restore any previous reference clock settings */

100
drivers/phy/phy-omap-usb2.c
View File

@ -133,11 +133,49 @@ static int omap_usb_power_on(struct phy *x)
return omap_usb_phy_power(phy, true);
}
static int omap_usb2_disable_clocks(struct omap_usb *phy)
{
clk_disable(phy->wkupclk);
if (!IS_ERR(phy->optclk))
clk_disable(phy->optclk);
return 0;
}
static int omap_usb2_enable_clocks(struct omap_usb *phy)
{
int ret;
ret = clk_enable(phy->wkupclk);
if (ret < 0) {
dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
goto err0;
}
if (!IS_ERR(phy->optclk)) {
ret = clk_enable(phy->optclk);
if (ret < 0) {
dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
goto err1;
}
}
return 0;
err1:
clk_disable(phy->wkupclk);
err0:
return ret;
}
static int omap_usb_init(struct phy *x)
{
struct omap_usb *phy = phy_get_drvdata(x);
u32 val;
omap_usb2_enable_clocks(phy);
if (phy->flags & OMAP_USB2_CALIBRATE_FALSE_DISCONNECT) {
/*
*
@ -155,8 +193,16 @@ static int omap_usb_init(struct phy *x)
return 0;
}
static int omap_usb_exit(struct phy *x)
{
struct omap_usb *phy = phy_get_drvdata(x);
return omap_usb2_disable_clocks(phy);
}
static const struct phy_ops ops = {
.init = omap_usb_init,
.exit = omap_usb_exit,
.power_on = omap_usb_power_on,
.power_off = omap_usb_power_off,
.owner = THIS_MODULE,
@ -376,65 +422,11 @@ static int omap_usb2_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM
static int omap_usb2_runtime_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct omap_usb *phy = platform_get_drvdata(pdev);
clk_disable(phy->wkupclk);
if (!IS_ERR(phy->optclk))
clk_disable(phy->optclk);
return 0;
}
static int omap_usb2_runtime_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct omap_usb *phy = platform_get_drvdata(pdev);
int ret;
ret = clk_enable(phy->wkupclk);
if (ret < 0) {
dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
goto err0;
}
if (!IS_ERR(phy->optclk)) {
ret = clk_enable(phy->optclk);
if (ret < 0) {
dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
goto err1;
}
}
return 0;
err1:
clk_disable(phy->wkupclk);
err0:
return ret;
}
static const struct dev_pm_ops omap_usb2_pm_ops = {
SET_RUNTIME_PM_OPS(omap_usb2_runtime_suspend, omap_usb2_runtime_resume,
NULL)
};
#define DEV_PM_OPS (&omap_usb2_pm_ops)
#else
#define DEV_PM_OPS NULL
#endif
static struct platform_driver omap_usb2_driver = {
.probe = omap_usb2_probe,
.remove = omap_usb2_remove,
.driver = {
.name = "omap-usb2",
.pm = DEV_PM_OPS,
.of_match_table = omap_usb2_id_table,
},
};

6
drivers/phy/phy-qcom-ufs.c
View File

@ -283,10 +283,8 @@ static int __ufs_qcom_phy_init_vreg(struct phy *phy,
err = 0;
}
snprintf(prop_name, MAX_PROP_NAME, "%s-always-on", name);
if (of_get_property(dev->of_node, prop_name, NULL))
vreg->is_always_on = true;
else
vreg->is_always_on = false;
vreg->is_always_on = of_property_read_bool(dev->of_node,
prop_name);
}
if (!strcmp(name, "vdda-pll")) {

1
drivers/phy/phy-rcar-gen3-usb2.c
View File

@ -280,6 +280,7 @@ static irqreturn_t rcar_gen3_phy_usb2_irq(int irq, void *_ch)
static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = {
{ .compatible = "renesas,usb2-phy-r8a7795" },
{ .compatible = "renesas,usb2-phy-r8a7796" },
{ .compatible = "renesas,rcar-gen3-usb2-phy" },
{ }
};

707
drivers/phy/phy-rockchip-inno-usb2.c 100644
View File

@ -0,0 +1,707 @@
/*
* Rockchip USB2.0 PHY with Innosilicon IP block driver
*
* Copyright (C) 2016 Fuzhou Rockchip Electronics Co., Ltd
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/gpio/consumer.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#define BIT_WRITEABLE_SHIFT 16
#define SCHEDULE_DELAY (60 * HZ)
enum rockchip_usb2phy_port_id {
USB2PHY_PORT_OTG,
USB2PHY_PORT_HOST,
USB2PHY_NUM_PORTS,
};
enum rockchip_usb2phy_host_state {
PHY_STATE_HS_ONLINE = 0,
PHY_STATE_DISCONNECT = 1,
PHY_STATE_CONNECT = 2,
PHY_STATE_FS_LS_ONLINE = 4,
};
struct usb2phy_reg {
unsigned int offset;
unsigned int bitend;
unsigned int bitstart;
unsigned int disable;
unsigned int enable;
};
/**
* struct rockchip_usb2phy_port_cfg: usb-phy port configuration.
* @phy_sus: phy suspend register.
* @ls_det_en: linestate detection enable register.
* @ls_det_st: linestate detection state register.
* @ls_det_clr: linestate detection clear register.
* @utmi_ls: utmi linestate state register.
* @utmi_hstdet: utmi host disconnect register.
*/
struct rockchip_usb2phy_port_cfg {
struct usb2phy_reg phy_sus;
struct usb2phy_reg ls_det_en;
struct usb2phy_reg ls_det_st;
struct usb2phy_reg ls_det_clr;
struct usb2phy_reg utmi_ls;
struct usb2phy_reg utmi_hstdet;
};
/**
* struct rockchip_usb2phy_cfg: usb-phy configuration.
* @reg: the address offset of grf for usb-phy config.
* @num_ports: specify how many ports that the phy has.
* @clkout_ctl: keep on/turn off output clk of phy.
*/
struct rockchip_usb2phy_cfg {
unsigned int reg;
unsigned int num_ports;
struct usb2phy_reg clkout_ctl;
const struct rockchip_usb2phy_port_cfg port_cfgs[USB2PHY_NUM_PORTS];
};
/**
* struct rockchip_usb2phy_port: usb-phy port data.
* @port_id: flag for otg port or host port.
* @suspended: phy suspended flag.
* @ls_irq: IRQ number assigned for linestate detection.
* @mutex: for register updating in sm_work.
* @sm_work: OTG state machine work.
* @phy_cfg: port register configuration, assigned by driver data.
*/
struct rockchip_usb2phy_port {
struct phy *phy;
unsigned int port_id;
bool suspended;
int ls_irq;
struct mutex mutex;
struct delayed_work sm_work;
const struct rockchip_usb2phy_port_cfg *port_cfg;
};
/**
* struct rockchip_usb2phy: usb2.0 phy driver data.
* @grf: General Register Files regmap.
* @clk: clock struct of phy input clk.
* @clk480m: clock struct of phy output clk.
* @clk_hw: clock struct of phy output clk management.
* @phy_cfg: phy register configuration, assigned by driver data.
* @ports: phy port instance.
*/
struct rockchip_usb2phy {
struct device *dev;
struct regmap *grf;
struct clk *clk;
struct clk *clk480m;
struct clk_hw clk480m_hw;
const struct rockchip_usb2phy_cfg *phy_cfg;
struct rockchip_usb2phy_port ports[USB2PHY_NUM_PORTS];
};
static inline int property_enable(struct rockchip_usb2phy *rphy,
const struct usb2phy_reg *reg, bool en)
{
unsigned int val, mask, tmp;
tmp = en ? reg->enable : reg->disable;
mask = GENMASK(reg->bitend, reg->bitstart);
val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
return regmap_write(rphy->grf, reg->offset, val);
}
static inline bool property_enabled(struct rockchip_usb2phy *rphy,
const struct usb2phy_reg *reg)
{
int ret;
unsigned int tmp, orig;
unsigned int mask = GENMASK(reg->bitend, reg->bitstart);
ret = regmap_read(rphy->grf, reg->offset, &orig);
if (ret)
return false;
tmp = (orig & mask) >> reg->bitstart;
return tmp == reg->enable;
}
static int rockchip_usb2phy_clk480m_enable(struct clk_hw *hw)
{
struct rockchip_usb2phy *rphy =
container_of(hw, struct rockchip_usb2phy, clk480m_hw);
int ret;
/* turn on 480m clk output if it is off */
if (!property_enabled(rphy, &rphy->phy_cfg->clkout_ctl)) {
ret = property_enable(rphy, &rphy->phy_cfg->clkout_ctl, true);
if (ret)
return ret;
/* waitting for the clk become stable */
mdelay(1);
}
return 0;
}
static void rockchip_usb2phy_clk480m_disable(struct clk_hw *hw)
{
struct rockchip_usb2phy *rphy =
container_of(hw, struct rockchip_usb2phy, clk480m_hw);
/* turn off 480m clk output */
property_enable(rphy, &rphy->phy_cfg->clkout_ctl, false);
}
static int rockchip_usb2phy_clk480m_enabled(struct clk_hw *hw)
{
struct rockchip_usb2phy *rphy =
container_of(hw, struct rockchip_usb2phy, clk480m_hw);
return property_enabled(rphy, &rphy->phy_cfg->clkout_ctl);
}
static unsigned long
rockchip_usb2phy_clk480m_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
return 480000000;
}
static const struct clk_ops rockchip_usb2phy_clkout_ops = {
.enable = rockchip_usb2phy_clk480m_enable,
.disable = rockchip_usb2phy_clk480m_disable,
.is_enabled = rockchip_usb2phy_clk480m_enabled,
.recalc_rate = rockchip_usb2phy_clk480m_recalc_rate,
};
static void rockchip_usb2phy_clk480m_unregister(void *data)
{
struct rockchip_usb2phy *rphy = data;
of_clk_del_provider(rphy->dev->of_node);
clk_unregister(rphy->clk480m);
}
static int
rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy)
{
struct device_node *node = rphy->dev->of_node;
struct clk_init_data init;
const char *clk_name;
int ret;
init.flags = 0;
init.name = "clk_usbphy_480m";
init.ops = &rockchip_usb2phy_clkout_ops;
/* optional override of the clockname */
of_property_read_string(node, "clock-output-names", &init.name);
if (rphy->clk) {
clk_name = __clk_get_name(rphy->clk);
init.parent_names = &clk_name;
init.num_parents = 1;
} else {
init.parent_names = NULL;
init.num_parents = 0;
}
rphy->clk480m_hw.init = &init;
/* register the clock */
rphy->clk480m = clk_register(rphy->dev, &rphy->clk480m_hw);
if (IS_ERR(rphy->clk480m)) {
ret = PTR_ERR(rphy->clk480m);
goto err_ret;
}
ret = of_clk_add_provider(node, of_clk_src_simple_get, rphy->clk480m);
if (ret < 0)
goto err_clk_provider;
ret = devm_add_action(rphy->dev, rockchip_usb2phy_clk480m_unregister,
rphy);
if (ret < 0)
goto err_unreg_action;
return 0;
err_unreg_action:
of_clk_del_provider(node);
err_clk_provider:
clk_unregister(rphy->clk480m);
err_ret:
return ret;
}
static int rockchip_usb2phy_init(struct phy *phy)
{
struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
int ret;
if (rport->port_id == USB2PHY_PORT_HOST) {
/* clear linestate and enable linestate detect irq */
mutex_lock(&rport->mutex);
ret = property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
if (ret) {
mutex_unlock(&rport->mutex);
return ret;
}
ret = property_enable(rphy, &rport->port_cfg->ls_det_en, true);
if (ret) {
mutex_unlock(&rport->mutex);
return ret;
}
mutex_unlock(&rport->mutex);
schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY);
}
return 0;
}
static int rockchip_usb2phy_power_on(struct phy *phy)
{
struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
int ret;
dev_dbg(&rport->phy->dev, "port power on\n");
if (!rport->suspended)
return 0;
ret = clk_prepare_enable(rphy->clk480m);
if (ret)
return ret;
ret = property_enable(rphy, &rport->port_cfg->phy_sus, false);
if (ret)
return ret;
rport->suspended = false;
return 0;
}
static int rockchip_usb2phy_power_off(struct phy *phy)
{
struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
struct rockchip_usb2phy *rphy = dev_get_drvdata(phy->dev.parent);
int ret;
dev_dbg(&rport->phy->dev, "port power off\n");
if (rport->suspended)
return 0;
ret = property_enable(rphy, &rport->port_cfg->phy_sus, true);
if (ret)
return ret;
rport->suspended = true;
clk_disable_unprepare(rphy->clk480m);
return 0;
}
static int rockchip_usb2phy_exit(struct phy *phy)
{
struct rockchip_usb2phy_port *rport = phy_get_drvdata(phy);
if (rport->port_id == USB2PHY_PORT_HOST)
cancel_delayed_work_sync(&rport->sm_work);
return 0;
}
static const struct phy_ops rockchip_usb2phy_ops = {
.init = rockchip_usb2phy_init,
.exit = rockchip_usb2phy_exit,
.power_on = rockchip_usb2phy_power_on,
.power_off = rockchip_usb2phy_power_off,
.owner = THIS_MODULE,
};
/*
* The function manage host-phy port state and suspend/resume phy port
* to save power.
*
* we rely on utmi_linestate and utmi_hostdisconnect to identify whether
* devices is disconnect or not. Besides, we do not need care it is FS/LS
* disconnected or HS disconnected, actually, we just only need get the
* device is disconnected at last through rearm the delayed work,
* to suspend the phy port in _PHY_STATE_DISCONNECT_ case.
*
* NOTE: It may invoke *phy_powr_off or *phy_power_on which will invoke
* some clk related APIs, so do not invoke it from interrupt context directly.
*/
static void rockchip_usb2phy_sm_work(struct work_struct *work)
{
struct rockchip_usb2phy_port *rport =
container_of(work, struct rockchip_usb2phy_port, sm_work.work);
struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
unsigned int sh = rport->port_cfg->utmi_hstdet.bitend -
rport->port_cfg->utmi_hstdet.bitstart + 1;
unsigned int ul, uhd, state;
unsigned int ul_mask, uhd_mask;
int ret;
mutex_lock(&rport->mutex);
ret = regmap_read(rphy->grf, rport->port_cfg->utmi_ls.offset, &ul);
if (ret < 0)
goto next_schedule;
ret = regmap_read(rphy->grf, rport->port_cfg->utmi_hstdet.offset,
&uhd);
if (ret < 0)
goto next_schedule;
uhd_mask = GENMASK(rport->port_cfg->utmi_hstdet.bitend,
rport->port_cfg->utmi_hstdet.bitstart);
ul_mask = GENMASK(rport->port_cfg->utmi_ls.bitend,
rport->port_cfg->utmi_ls.bitstart);
/* stitch on utmi_ls and utmi_hstdet as phy state */
state = ((uhd & uhd_mask) >> rport->port_cfg->utmi_hstdet.bitstart) |
(((ul & ul_mask) >> rport->port_cfg->utmi_ls.bitstart) << sh);
switch (state) {
case PHY_STATE_HS_ONLINE:
dev_dbg(&rport->phy->dev, "HS online\n");
break;
case PHY_STATE_FS_LS_ONLINE:
/*
* For FS/LS device, the online state share with connect state
* from utmi_ls and utmi_hstdet register, so we distinguish
* them via suspended flag.
*
* Plus, there are two cases, one is D- Line pull-up, and D+
* line pull-down, the state is 4; another is D+ line pull-up,
* and D- line pull-down, the state is 2.
*/
if (!rport->suspended) {
/* D- line pull-up, D+ line pull-down */
dev_dbg(&rport->phy->dev, "FS/LS online\n");
break;
}
/* fall through */
case PHY_STATE_CONNECT:
if (rport->suspended) {
dev_dbg(&rport->phy->dev, "Connected\n");
rockchip_usb2phy_power_on(rport->phy);
rport->suspended = false;
} else {
/* D+ line pull-up, D- line pull-down */
dev_dbg(&rport->phy->dev, "FS/LS online\n");
}
break;
case PHY_STATE_DISCONNECT:
if (!rport->suspended) {
dev_dbg(&rport->phy->dev, "Disconnected\n");
rockchip_usb2phy_power_off(rport->phy);
rport->suspended = true;
}
/*
* activate the linestate detection to get the next device
* plug-in irq.
*/
property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
property_enable(rphy, &rport->port_cfg->ls_det_en, true);
/*
* we don't need to rearm the delayed work when the phy port
* is suspended.
*/
mutex_unlock(&rport->mutex);
return;
default:
dev_dbg(&rport->phy->dev, "unknown phy state\n");
break;
}
next_schedule:
mutex_unlock(&rport->mutex);
schedule_delayed_work(&rport->sm_work, SCHEDULE_DELAY);
}
static irqreturn_t rockchip_usb2phy_linestate_irq(int irq, void *data)
{
struct rockchip_usb2phy_port *rport = data;
struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
if (!property_enabled(rphy, &rport->port_cfg->ls_det_st))
return IRQ_NONE;
mutex_lock(&rport->mutex);
/* disable linestate detect irq and clear its status */
property_enable(rphy, &rport->port_cfg->ls_det_en, false);
property_enable(rphy, &rport->port_cfg->ls_det_clr, true);
mutex_unlock(&rport->mutex);
/*
* In this case for host phy port, a new device is plugged in,
* meanwhile, if the phy port is suspended, we need rearm the work to
* resume it and mange its states; otherwise, we do nothing about that.
*/
if (rport->suspended && rport->port_id == USB2PHY_PORT_HOST)
rockchip_usb2phy_sm_work(&rport->sm_work.work);
return IRQ_HANDLED;
}
static int rockchip_usb2phy_host_port_init(struct rockchip_usb2phy *rphy,
struct rockchip_usb2phy_port *rport,
struct device_node *child_np)
{
int ret;
rport->port_id = USB2PHY_PORT_HOST;
rport->port_cfg = &rphy->phy_cfg->port_cfgs[USB2PHY_PORT_HOST];
rport->suspended = true;
mutex_init(&rport->mutex);
INIT_DELAYED_WORK(&rport->sm_work, rockchip_usb2phy_sm_work);
rport->ls_irq = of_irq_get_byname(child_np, "linestate");
if (rport->ls_irq < 0) {
dev_err(rphy->dev, "no linestate irq provided\n");
return rport->ls_irq;
}
ret = devm_request_threaded_irq(rphy->dev, rport->ls_irq, NULL,
rockchip_usb2phy_linestate_irq,
IRQF_ONESHOT,
"rockchip_usb2phy", rport);
if (ret) {
dev_err(rphy->dev, "failed to request irq handle\n");
return ret;
}
return 0;
}
static int rockchip_usb2phy_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct device_node *child_np;
struct phy_provider *provider;
struct rockchip_usb2phy *rphy;
const struct rockchip_usb2phy_cfg *phy_cfgs;
const struct of_device_id *match;
unsigned int reg;
int index, ret;
rphy = devm_kzalloc(dev, sizeof(*rphy), GFP_KERNEL);
if (!rphy)
return -ENOMEM;
match = of_match_device(dev->driver->of_match_table, dev);
if (!match || !match->data) {
dev_err(dev, "phy configs are not assigned!\n");
return -EINVAL;
}
if (!dev->parent || !dev->parent->of_node)
return -EINVAL;
rphy->grf = syscon_node_to_regmap(dev->parent->of_node);
if (IS_ERR(rphy->grf))
return PTR_ERR(rphy->grf);
if (of_property_read_u32(np, "reg", &reg)) {
dev_err(dev, "the reg property is not assigned in %s node\n",
np->name);
return -EINVAL;
}
rphy->dev = dev;
phy_cfgs = match->data;
platform_set_drvdata(pdev, rphy);
/* find out a proper config which can be matched with dt. */
index = 0;
while (phy_cfgs[index].reg) {
if (phy_cfgs[index].reg == reg) {
rphy->phy_cfg = &phy_cfgs[index];
break;
}
++index;
}
if (!rphy->phy_cfg) {
dev_err(dev, "no phy-config can be matched with %s node\n",
np->name);
return -EINVAL;
}
rphy->clk = of_clk_get_by_name(np, "phyclk");
if (!IS_ERR(rphy->clk)) {
clk_prepare_enable(rphy->clk);
} else {
dev_info(&pdev->dev, "no phyclk specified\n");
rphy->clk = NULL;
}
ret = rockchip_usb2phy_clk480m_register(rphy);
if (ret) {
dev_err(dev, "failed to register 480m output clock\n");
goto disable_clks;
}
index = 0;
for_each_available_child_of_node(np, child_np) {
struct rockchip_usb2phy_port *rport = &rphy->ports[index];
struct phy *phy;
/*
* This driver aim to support both otg-port and host-port,
* but unfortunately, the otg part is not ready in current,
* so this comments and below codes are interim, which should
* be changed after otg-port is supplied soon.
*/
if (of_node_cmp(child_np->name, "host-port"))
goto next_child;
phy = devm_phy_create(dev, child_np, &rockchip_usb2phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create phy\n");
ret = PTR_ERR(phy);
goto put_child;
}
rport->phy = phy;
phy_set_drvdata(rport->phy, rport);
ret = rockchip_usb2phy_host_port_init(rphy, rport, child_np);
if (ret)
goto put_child;
next_child:
/* to prevent out of boundary */
if (++index >= rphy->phy_cfg->num_ports)
break;
}
provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
return PTR_ERR_OR_ZERO(provider);
put_child:
of_node_put(child_np);
disable_clks:
if (rphy->clk) {
clk_disable_unprepare(rphy->clk);
clk_put(rphy->clk);
}
return ret;
}
static const struct rockchip_usb2phy_cfg rk3366_phy_cfgs[] = {
{
.reg = 0x700,
.num_ports = 2,
.clkout_ctl = { 0x0724, 15, 15, 1, 0 },
.port_cfgs = {
[USB2PHY_PORT_HOST] = {
.phy_sus = { 0x0728, 15, 0, 0, 0x1d1 },
.ls_det_en = { 0x0680, 4, 4, 0, 1 },
.ls_det_st = { 0x0690, 4, 4, 0, 1 },
.ls_det_clr = { 0x06a0, 4, 4, 0, 1 },
.utmi_ls = { 0x049c, 14, 13, 0, 1 },
.utmi_hstdet = { 0x049c, 12, 12, 0, 1 }
}
},
},
{ /* sentinel */ }
};
static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = {
{
.reg = 0xe450,
.num_ports = 2,
.clkout_ctl = { 0xe450, 4, 4, 1, 0 },
.port_cfgs = {
[USB2PHY_PORT_HOST] = {
.phy_sus = { 0xe458, 1, 0, 0x2, 0x1 },
.ls_det_en = { 0xe3c0, 6, 6, 0, 1 },
.ls_det_st = { 0xe3e0, 6, 6, 0, 1 },
.ls_det_clr = { 0xe3d0, 6, 6, 0, 1 },
.utmi_ls = { 0xe2ac, 22, 21, 0, 1 },
.utmi_hstdet = { 0xe2ac, 23, 23, 0, 1 }
}
},
},
{
.reg = 0xe460,
.num_ports = 2,
.clkout_ctl = { 0xe460, 4, 4, 1, 0 },
.port_cfgs = {
[USB2PHY_PORT_HOST] = {
.phy_sus = { 0xe468, 1, 0, 0x2, 0x1 },
.ls_det_en = { 0xe3c0, 11, 11, 0, 1 },
.ls_det_st = { 0xe3e0, 11, 11, 0, 1 },
.ls_det_clr = { 0xe3d0, 11, 11, 0, 1 },
.utmi_ls = { 0xe2ac, 26, 25, 0, 1 },
.utmi_hstdet = { 0xe2ac, 27, 27, 0, 1 }
}
},
},
{ /* sentinel */ }
};
static const struct of_device_id rockchip_usb2phy_dt_match[] = {
{ .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs },
{ .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs },
{}
};
MODULE_DEVICE_TABLE(of, rockchip_usb2phy_dt_match);
static struct platform_driver rockchip_usb2phy_driver = {
.probe = rockchip_usb2phy_probe,
.driver = {
.name = "rockchip-usb2phy",
.of_match_table = rockchip_usb2phy_dt_match,
},
};
module_platform_driver(rockchip_usb2phy_driver);
MODULE_AUTHOR("Frank Wang <frank.wang@rock-chips.com>");
MODULE_DESCRIPTION("Rockchip USB2.0 PHY driver");
MODULE_LICENSE("GPL v2");

357
drivers/phy/phy-rockchip-pcie.c 100644
View File

@ -0,0 +1,357 @@
/*
* Rockchip PCIe PHY driver
*
* Copyright (C) 2016 Shawn Lin <shawn.lin@rock-chips.com>
* Copyright (C) 2016 ROCKCHIP, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/reset.h>
/*
* The higher 16-bit of this register is used for write protection
* only if BIT(x + 16) set to 1 the BIT(x) can be written.
*/
#define HIWORD_UPDATE(val, mask, shift) \
((val) << (shift) | (mask) << ((shift) + 16))
#define PHY_MAX_LANE_NUM 4
#define PHY_CFG_DATA_SHIFT 7
#define PHY_CFG_ADDR_SHIFT 1
#define PHY_CFG_DATA_MASK 0xf
#define PHY_CFG_ADDR_MASK 0x3f
#define PHY_CFG_RD_MASK 0x3ff
#define PHY_CFG_WR_ENABLE 1
#define PHY_CFG_WR_DISABLE 1
#define PHY_CFG_WR_SHIFT 0
#define PHY_CFG_WR_MASK 1
#define PHY_CFG_PLL_LOCK 0x10
#define PHY_CFG_CLK_TEST 0x10
#define PHY_CFG_CLK_SCC 0x12
#define PHY_CFG_SEPE_RATE BIT(3)
#define PHY_CFG_PLL_100M BIT(3)
#define PHY_PLL_LOCKED BIT(9)
#define PHY_PLL_OUTPUT BIT(10)
#define PHY_LANE_A_STATUS 0x30
#define PHY_LANE_B_STATUS 0x31
#define PHY_LANE_C_STATUS 0x32
#define PHY_LANE_D_STATUS 0x33
#define PHY_LANE_RX_DET_SHIFT 11
#define PHY_LANE_RX_DET_TH 0x1
#define PHY_LANE_IDLE_OFF 0x1
#define PHY_LANE_IDLE_MASK 0x1
#define PHY_LANE_IDLE_A_SHIFT 3
#define PHY_LANE_IDLE_B_SHIFT 4
#define PHY_LANE_IDLE_C_SHIFT 5
#define PHY_LANE_IDLE_D_SHIFT 6
struct rockchip_pcie_data {
unsigned int pcie_conf;
unsigned int pcie_status;
unsigned int pcie_laneoff;
};
struct rockchip_pcie_phy {
struct rockchip_pcie_data *phy_data;
struct regmap *reg_base;
struct reset_control *phy_rst;
struct clk *clk_pciephy_ref;
};
static inline void phy_wr_cfg(struct rockchip_pcie_phy *rk_phy,
u32 addr, u32 data)
{
regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
HIWORD_UPDATE(data,
PHY_CFG_DATA_MASK,
PHY_CFG_DATA_SHIFT) |
HIWORD_UPDATE(addr,
PHY_CFG_ADDR_MASK,
PHY_CFG_ADDR_SHIFT));
udelay(1);
regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
HIWORD_UPDATE(PHY_CFG_WR_ENABLE,
PHY_CFG_WR_MASK,
PHY_CFG_WR_SHIFT));
udelay(1);
regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
HIWORD_UPDATE(PHY_CFG_WR_DISABLE,
PHY_CFG_WR_MASK,
PHY_CFG_WR_SHIFT));
}
static inline u32 phy_rd_cfg(struct rockchip_pcie_phy *rk_phy,
u32 addr)
{
u32 val;
regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
HIWORD_UPDATE(addr,
PHY_CFG_RD_MASK,
PHY_CFG_ADDR_SHIFT));
regmap_read(rk_phy->reg_base,
rk_phy->phy_data->pcie_status,
&val);
return val;
}
static int rockchip_pcie_phy_power_off(struct phy *phy)
{
struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
int err = 0;
err = reset_control_assert(rk_phy->phy_rst);
if (err) {
dev_err(&phy->dev, "assert phy_rst err %d\n", err);
return err;
}
return 0;
}
static int rockchip_pcie_phy_power_on(struct phy *phy)
{
struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
int err = 0;
u32 status;
unsigned long timeout;
err = reset_control_deassert(rk_phy->phy_rst);
if (err) {
dev_err(&phy->dev, "deassert phy_rst err %d\n", err);
return err;
}
regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
HIWORD_UPDATE(PHY_CFG_PLL_LOCK,
PHY_CFG_ADDR_MASK,
PHY_CFG_ADDR_SHIFT));
/*
* No documented timeout value for phy operation below,
* so we make it large enough here. And we use loop-break
* method which should not be harmful.
*/
timeout = jiffies + msecs_to_jiffies(1000);
err = -EINVAL;
while (time_before(jiffies, timeout)) {
regmap_read(rk_phy->reg_base,
rk_phy->phy_data->pcie_status,
&status);
if (status & PHY_PLL_LOCKED) {
dev_dbg(&phy->dev, "pll locked!\n");
err = 0;
break;
}
msleep(20);
}
if (err) {
dev_err(&phy->dev, "pll lock timeout!\n");
goto err_pll_lock;
}
phy_wr_cfg(rk_phy, PHY_CFG_CLK_TEST, PHY_CFG_SEPE_RATE);
phy_wr_cfg(rk_phy, PHY_CFG_CLK_SCC, PHY_CFG_PLL_100M);
err = -ETIMEDOUT;
while (time_before(jiffies, timeout)) {
regmap_read(rk_phy->reg_base,
rk_phy->phy_data->pcie_status,
&status);
if (!(status & PHY_PLL_OUTPUT)) {
dev_dbg(&phy->dev, "pll output enable done!\n");
err = 0;
break;
}
msleep(20);
}
if (err) {
dev_err(&phy->dev, "pll output enable timeout!\n");
goto err_pll_lock;
}
regmap_write(rk_phy->reg_base, rk_phy->phy_data->pcie_conf,
HIWORD_UPDATE(PHY_CFG_PLL_LOCK,
PHY_CFG_ADDR_MASK,
PHY_CFG_ADDR_SHIFT));
err = -EINVAL;
while (time_before(jiffies, timeout)) {
regmap_read(rk_phy->reg_base,
rk_phy->phy_data->pcie_status,
&status);
if (status & PHY_PLL_LOCKED) {
dev_dbg(&phy->dev, "pll relocked!\n");
err = 0;
break;
}
msleep(20);
}
if (err) {
dev_err(&phy->dev, "pll relock timeout!\n");
goto err_pll_lock;
}
return 0;
err_pll_lock:
reset_control_assert(rk_phy->phy_rst);
return err;
}
static int rockchip_pcie_phy_init(struct phy *phy)
{
struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
int err = 0;
err = clk_prepare_enable(rk_phy->clk_pciephy_ref);
if (err) {
dev_err(&phy->dev, "Fail to enable pcie ref clock.\n");
goto err_refclk;
}
err = reset_control_assert(rk_phy->phy_rst);
if (err) {
dev_err(&phy->dev, "assert phy_rst err %d\n", err);
goto err_reset;
}
return err;
err_reset:
clk_disable_unprepare(rk_phy->clk_pciephy_ref);
err_refclk:
return err;
}
static int rockchip_pcie_phy_exit(struct phy *phy)
{
struct rockchip_pcie_phy *rk_phy = phy_get_drvdata(phy);
int err = 0;
clk_disable_unprepare(rk_phy->clk_pciephy_ref);
err = reset_control_deassert(rk_phy->phy_rst);
if (err) {
dev_err(&phy->dev, "deassert phy_rst err %d\n", err);
goto err_reset;
}
return err;
err_reset:
clk_prepare_enable(rk_phy->clk_pciephy_ref);
return err;
}
static const struct phy_ops ops = {
.init = rockchip_pcie_phy_init,
.exit = rockchip_pcie_phy_exit,
.power_on = rockchip_pcie_phy_power_on,
.power_off = rockchip_pcie_phy_power_off,
.owner = THIS_MODULE,
};
static const struct rockchip_pcie_data rk3399_pcie_data = {
.pcie_conf = 0xe220,
.pcie_status = 0xe2a4,
.pcie_laneoff = 0xe214,
};
static const struct of_device_id rockchip_pcie_phy_dt_ids[] = {
{
.compatible = "rockchip,rk3399-pcie-phy",
.data = &rk3399_pcie_data,
},
{}
};
MODULE_DEVICE_TABLE(of, rockchip_pcie_phy_dt_ids);
static int rockchip_pcie_phy_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rockchip_pcie_phy *rk_phy;
struct phy *generic_phy;
struct phy_provider *phy_provider;
struct regmap *grf;
const struct of_device_id *of_id;
grf = syscon_node_to_regmap(dev->parent->of_node);
if (IS_ERR(grf)) {
dev_err(dev, "Cannot find GRF syscon\n");
return PTR_ERR(grf);
}
rk_phy = devm_kzalloc(dev, sizeof(*rk_phy), GFP_KERNEL);
if (!rk_phy)
return -ENOMEM;
of_id = of_match_device(rockchip_pcie_phy_dt_ids, &pdev->dev);
if (!of_id)
return -EINVAL;
rk_phy->phy_data = (struct rockchip_pcie_data *)of_id->data;
rk_phy->reg_base = grf;
rk_phy->phy_rst = devm_reset_control_get(dev, "phy");
if (IS_ERR(rk_phy->phy_rst)) {
if (PTR_ERR(rk_phy->phy_rst) != -EPROBE_DEFER)
dev_err(dev,
"missing phy property for reset controller\n");
return PTR_ERR(rk_phy->phy_rst);
}
rk_phy->clk_pciephy_ref = devm_clk_get(dev, "refclk");
if (IS_ERR(rk_phy->clk_pciephy_ref)) {
dev_err(dev, "refclk not found.\n");
return PTR_ERR(rk_phy->clk_pciephy_ref);
}
generic_phy = devm_phy_create(dev, dev->of_node, &ops);
if (IS_ERR(generic_phy)) {
dev_err(dev, "failed to create PHY\n");
return PTR_ERR(generic_phy);
}
phy_set_drvdata(generic_phy, rk_phy);
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
return PTR_ERR_OR_ZERO(phy_provider);
}
static struct platform_driver rockchip_pcie_driver = {
.probe = rockchip_pcie_phy_probe,
.driver = {
.name = "rockchip-pcie-phy",
.of_match_table = rockchip_pcie_phy_dt_ids,
},
};
module_platform_driver(rockchip_pcie_driver);
MODULE_AUTHOR("Shawn Lin <shawn.lin@rock-chips.com>");
MODULE_DESCRIPTION("Rockchip PCIe PHY driver");
MODULE_LICENSE("GPL v2");

1023
drivers/phy/phy-rockchip-typec.c 100644
View File

File diff suppressed because it is too large Load Diff

20
drivers/phy/phy-rockchip-usb.c
View File

@ -29,6 +29,7 @@
#include <linux/reset.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#include <linux/delay.h>
static int enable_usb_uart;
@ -64,6 +65,7 @@ struct rockchip_usb_phy {
struct clk_hw clk480m_hw;
struct phy *phy;
bool uart_enabled;
struct reset_control *reset;
};
static int rockchip_usb_phy_power(struct rockchip_usb_phy *phy,
@ -144,9 +146,23 @@ static int rockchip_usb_phy_power_on(struct phy *_phy)
return clk_prepare_enable(phy->clk480m);
}
static int rockchip_usb_phy_reset(struct phy *_phy)
{
struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
if (phy->reset) {
reset_control_assert(phy->reset);
udelay(10);
reset_control_deassert(phy->reset);
}
return 0;
}
static const struct phy_ops ops = {
.power_on = rockchip_usb_phy_power_on,
.power_off = rockchip_usb_phy_power_off,
.reset = rockchip_usb_phy_reset,
.owner = THIS_MODULE,
};
@ -185,6 +201,10 @@ static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base,
return -EINVAL;
}
rk_phy->reset = of_reset_control_get(child, "phy-reset");
if (IS_ERR(rk_phy->reset))
rk_phy->reset = NULL;
rk_phy->reg_offset = reg_offset;
rk_phy->clk = of_clk_get_by_name(child, "phyclk");

154
drivers/phy/phy-sun4i-usb.c
View File

@ -40,6 +40,7 @@
#include <linux/power_supply.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/spinlock.h>
#include <linux/usb/of.h>
#include <linux/workqueue.h>
@ -50,7 +51,7 @@
#define REG_PHYCTL_A33 0x10
#define REG_PHY_UNK_H3 0x20
#define REG_PMU_UNK_H3 0x10
#define REG_PMU_UNK1 0x10
#define PHYCTL_DATA BIT(7)
@ -98,6 +99,7 @@ enum sun4i_usb_phy_type {
sun6i_a31_phy,
sun8i_a33_phy,
sun8i_h3_phy,
sun50i_a64_phy,
};
struct sun4i_usb_phy_cfg {
@ -106,13 +108,14 @@ struct sun4i_usb_phy_cfg {
u32 disc_thresh;
u8 phyctl_offset;
bool dedicated_clocks;
bool enable_pmu_unk1;
};
struct sun4i_usb_phy_data {
void __iomem *base;
const struct sun4i_usb_phy_cfg *cfg;
enum usb_dr_mode dr_mode;
struct mutex mutex;
spinlock_t reg_lock; /* guard access to phyctl reg */
struct sun4i_usb_phy {
struct phy *phy;
void __iomem *pmu;
@ -122,7 +125,6 @@ struct sun4i_usb_phy_data {
bool regulator_on;
int index;
} phys[MAX_PHYS];
int first_phy;
/* phy0 / otg related variables */
struct extcon_dev *extcon;
bool phy0_init;
@ -131,6 +133,7 @@ struct sun4i_usb_phy_data {
struct power_supply *vbus_power_supply;
struct notifier_block vbus_power_nb;
bool vbus_power_nb_registered;
bool force_session_end;
int id_det_irq;
int vbus_det_irq;
int id_det;
@ -179,12 +182,14 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data,
struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
u32 temp, usbc_bit = BIT(phy->index * 2);
void __iomem *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;
unsigned long flags;
int i;
mutex_lock(&phy_data->mutex);
spin_lock_irqsave(&phy_data->reg_lock, flags);
if (phy_data->cfg->type == sun8i_a33_phy) {
/* A33 needs us to set phyctl to 0 explicitly */
if (phy_data->cfg->type == sun8i_a33_phy ||
phy_data->cfg->type == sun50i_a64_phy) {
/* A33 or A64 needs us to set phyctl to 0 explicitly */
writel(0, phyctl);
}
@ -218,7 +223,8 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data,
data >>= 1;
}
mutex_unlock(&phy_data->mutex);
spin_unlock_irqrestore(&phy_data->reg_lock, flags);
}
static void sun4i_usb_phy_passby(struct sun4i_usb_phy *phy, int enable)
@ -258,14 +264,16 @@ static int sun4i_usb_phy_init(struct phy *_phy)
return ret;
}
if (data->cfg->enable_pmu_unk1) {
val = readl(phy->pmu + REG_PMU_UNK1);
writel(val & ~2, phy->pmu + REG_PMU_UNK1);
}
if (data->cfg->type == sun8i_h3_phy) {
if (phy->index == 0) {
val = readl(data->base + REG_PHY_UNK_H3);
writel(val & ~1, data->base + REG_PHY_UNK_H3);
}
val = readl(phy->pmu + REG_PMU_UNK_H3);
writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
} else {
/* Enable USB 45 Ohm resistor calibration */
if (phy->index == 0)
@ -320,7 +328,10 @@ static int sun4i_usb_phy0_get_id_det(struct sun4i_usb_phy_data *data)
{
switch (data->dr_mode) {
case USB_DR_MODE_OTG:
return gpiod_get_value_cansleep(data->id_det_gpio);
if (data->id_det_gpio)
return gpiod_get_value_cansleep(data->id_det_gpio);
else
return 1; /* Fallback to peripheral mode */
case USB_DR_MODE_HOST:
return 0;
case USB_DR_MODE_PERIPHERAL:
@ -382,8 +393,10 @@ static int sun4i_usb_phy_power_on(struct phy *_phy)
/* For phy0 only turn on Vbus if we don't have an ext. Vbus */
if (phy->index == 0 && sun4i_usb_phy0_have_vbus_det(data) &&
data->vbus_det)
data->vbus_det) {
dev_warn(&_phy->dev, "External vbus detected, not enabling our own vbus\n");
return 0;
}
ret = regulator_enable(phy->vbus);
if (ret)
@ -419,6 +432,35 @@ static int sun4i_usb_phy_power_off(struct phy *_phy)
return 0;
}
static int sun4i_usb_phy_set_mode(struct phy *_phy, enum phy_mode mode)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
if (phy->index != 0)
return -EINVAL;
switch (mode) {
case PHY_MODE_USB_HOST:
data->dr_mode = USB_DR_MODE_HOST;
break;
case PHY_MODE_USB_DEVICE:
data->dr_mode = USB_DR_MODE_PERIPHERAL;
break;
case PHY_MODE_USB_OTG:
data->dr_mode = USB_DR_MODE_OTG;
break;
default:
return -EINVAL;
}
dev_info(&_phy->dev, "Changing dr_mode to %d\n", (int)data->dr_mode);
data->force_session_end = true;
queue_delayed_work(system_wq, &data->detect, 0);
return 0;
}
void sun4i_usb_phy_set_squelch_detect(struct phy *_phy, bool enabled)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
@ -432,6 +474,7 @@ static const struct phy_ops sun4i_usb_phy_ops = {
.exit = sun4i_usb_phy_exit,
.power_on = sun4i_usb_phy_power_on,
.power_off = sun4i_usb_phy_power_off,
.set_mode = sun4i_usb_phy_set_mode,
.owner = THIS_MODULE,
};
@ -440,7 +483,8 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
struct sun4i_usb_phy_data *data =
container_of(work, struct sun4i_usb_phy_data, detect.work);
struct phy *phy0 = data->phys[0].phy;
int id_det, vbus_det, id_notify = 0, vbus_notify = 0;
bool force_session_end, id_notify = false, vbus_notify = false;
int id_det, vbus_det;
if (phy0 == NULL)
return;
@ -455,27 +499,30 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
return;
}
force_session_end = data->force_session_end;
data->force_session_end = false;
if (id_det != data->id_det) {
/*
* When a host cable (id == 0) gets plugged in on systems
* without vbus detection report vbus low for long enough for
* the musb-ip to end the current device session.
*/
/* id-change, force session end if we've no vbus detection */
if (data->dr_mode == USB_DR_MODE_OTG &&
!sun4i_usb_phy0_have_vbus_det(data) && id_det == 0) {
!sun4i_usb_phy0_have_vbus_det(data))
force_session_end = true;
/* When entering host mode (id = 0) force end the session now */
if (force_session_end && id_det == 0) {
sun4i_usb_phy0_set_vbus_detect(phy0, 0);
msleep(200);
sun4i_usb_phy0_set_vbus_detect(phy0, 1);
}
sun4i_usb_phy0_set_id_detect(phy0, id_det);
data->id_det = id_det;
id_notify = 1;
id_notify = true;
}
if (vbus_det != data->vbus_det) {
sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det);
data->vbus_det = vbus_det;
vbus_notify = 1;
vbus_notify = true;
}
mutex_unlock(&phy0->mutex);
@ -483,13 +530,8 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
if (id_notify) {
extcon_set_cable_state_(data->extcon, EXTCON_USB_HOST,
!id_det);
/*
* When a host cable gets unplugged (id == 1) on systems
* without vbus detection report vbus low for long enough to
* the musb-ip to end the current host session.
*/
if (data->dr_mode == USB_DR_MODE_OTG &&
!sun4i_usb_phy0_have_vbus_det(data) && id_det == 1) {
/* When leaving host mode force end the session here */
if (force_session_end && id_det == 1) {
mutex_lock(&phy0->mutex);
sun4i_usb_phy0_set_vbus_detect(phy0, 0);
msleep(1000);
@ -534,8 +576,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
{
struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
if (args->args[0] < data->first_phy ||
args->args[0] >= data->cfg->num_phys)
if (args->args[0] >= data->cfg->num_phys)
return ERR_PTR(-ENODEV);
return data->phys[args->args[0]].phy;
@ -577,7 +618,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
if (!data)
return -ENOMEM;
mutex_init(&data->mutex);
spin_lock_init(&data->reg_lock);
INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
dev_set_drvdata(dev, data);
data->cfg = of_device_get_match_data(dev);
@ -610,33 +651,18 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
}
data->dr_mode = of_usb_get_dr_mode_by_phy(np, 0);
switch (data->dr_mode) {
case USB_DR_MODE_OTG:
/* otg without id_det makes no sense, and is not supported */
if (!data->id_det_gpio) {
dev_err(dev, "usb0_id_det missing or invalid\n");
return -ENODEV;
}
/* fall through */
case USB_DR_MODE_HOST:
case USB_DR_MODE_PERIPHERAL:
data->extcon = devm_extcon_dev_allocate(dev,
sun4i_usb_phy0_cable);
if (IS_ERR(data->extcon))
return PTR_ERR(data->extcon);
ret = devm_extcon_dev_register(dev, data->extcon);
if (ret) {
dev_err(dev, "failed to register extcon: %d\n", ret);
return ret;
}
break;
default:
dev_info(dev, "dr_mode unknown, not registering usb phy0\n");
data->first_phy = 1;
data->extcon = devm_extcon_dev_allocate(dev, sun4i_usb_phy0_cable);
if (IS_ERR(data->extcon))
return PTR_ERR(data->extcon);
ret = devm_extcon_dev_register(dev, data->extcon);
if (ret) {
dev_err(dev, "failed to register extcon: %d\n", ret);
return ret;
}
for (i = data->first_phy; i < data->cfg->num_phys; i++) {
for (i = 0; i < data->cfg->num_phys; i++) {
struct sun4i_usb_phy *phy = data->phys + i;
char name[16];
@ -737,6 +763,7 @@ static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = false,
.enable_pmu_unk1 = false,
};
static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
@ -745,6 +772,7 @@ static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
.disc_thresh = 2,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = false,
.enable_pmu_unk1 = false,
};
static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
@ -753,6 +781,7 @@ static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = true,
.enable_pmu_unk1 = false,
};
static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
@ -761,6 +790,7 @@ static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
.disc_thresh = 2,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = false,
.enable_pmu_unk1 = false,
};
static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
@ -769,6 +799,7 @@ static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = true,
.enable_pmu_unk1 = false,
};
static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
@ -777,6 +808,7 @@ static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true,
.enable_pmu_unk1 = false,
};
static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
@ -784,6 +816,16 @@ static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
.type = sun8i_h3_phy,
.disc_thresh = 3,
.dedicated_clocks = true,
.enable_pmu_unk1 = true,
};
static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
.num_phys = 2,
.type = sun50i_a64_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true,
.enable_pmu_unk1 = true,
};
static const struct of_device_id sun4i_usb_phy_of_match[] = {
@ -794,6 +836,8 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = {
{ .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
{ .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
{ .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg },
{ .compatible = "allwinner,sun50i-a64-usb-phy",
.data = &sun50i_a64_cfg},
{ },
};
MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);

25
drivers/phy/phy-twl4030-usb.c
View File

@ -172,6 +172,7 @@ struct twl4030_usb {
int irq;
enum musb_vbus_id_status linkstat;
bool vbus_supplied;
bool musb_mailbox_pending;
struct delayed_work id_workaround_work;
};
@ -439,6 +440,17 @@ static int __maybe_unused twl4030_usb_runtime_resume(struct device *dev)
(PHY_CLK_CTRL_CLOCKGATING_EN |
PHY_CLK_CTRL_CLK32K_EN));
twl4030_i2c_access(twl, 1);
twl4030_usb_set_mode(twl, twl->usb_mode);
if (twl->usb_mode == T2_USB_MODE_ULPI)
twl4030_i2c_access(twl, 0);
/*
* According to the TPS65950 TRM, there has to be at least 50ms
* delay between setting POWER_CTRL_OTG_ENAB and enabling charging
* so wait here so that a fully enabled phy can be expected after
* resume
*/
msleep(50);
return 0;
}
@ -459,11 +471,6 @@ static int twl4030_phy_power_on(struct phy *phy)
dev_dbg(twl->dev, "%s\n", __func__);
pm_runtime_get_sync(twl->dev);
twl4030_i2c_access(twl, 1);
twl4030_usb_set_mode(twl, twl->usb_mode);
if (twl->usb_mode == T2_USB_MODE_ULPI)
twl4030_i2c_access(twl, 0);
twl->linkstat = MUSB_UNKNOWN;
schedule_delayed_work(&twl->id_workaround_work, HZ);
return 0;
@ -569,9 +576,12 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
pm_runtime_mark_last_busy(twl->dev);
pm_runtime_put_autosuspend(twl->dev);
}
twl->musb_mailbox_pending = true;
}
if (twl->musb_mailbox_pending) {
err = musb_mailbox(status);
if (err)
twl->linkstat = MUSB_UNKNOWN;
if (!err)
twl->musb_mailbox_pending = false;
}
/* don't schedule during sleep - irq works right then */
@ -676,6 +686,7 @@ static int twl4030_usb_probe(struct platform_device *pdev)
twl->irq = platform_get_irq(pdev, 0);
twl->vbus_supplied = false;
twl->linkstat = MUSB_UNKNOWN;
twl->musb_mailbox_pending = false;
twl->phy.dev = twl->dev;
twl->phy.label = "twl4030";

4
drivers/phy/tegra/xusb.c
View File

@ -18,6 +18,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/phy/phy.h>
#include <linux/phy/tegra/xusb.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
@ -101,7 +102,8 @@ tegra_xusb_pad_find_phy_node(struct tegra_xusb_pad *pad, unsigned int index)
return of_find_node_by_name(np, pad->soc->lanes[index].name);
}
int tegra_xusb_lane_lookup_function(struct tegra_xusb_lane *lane,
static int
tegra_xusb_lane_lookup_function(struct tegra_xusb_lane *lane,
const char *function)
{
unsigned int i;

24
drivers/usb/Kconfig
View File

@ -152,7 +152,8 @@ source "drivers/usb/gadget/Kconfig"
config USB_LED_TRIG
bool "USB LED Triggers"
depends on LEDS_CLASS && USB_COMMON && LEDS_TRIGGERS
depends on LEDS_CLASS && LEDS_TRIGGERS
select USB_COMMON
help
This option adds LED triggers for USB host and/or gadget activity.
@ -160,4 +161,25 @@ config USB_LED_TRIG
LEDs and you want to use them as activity indicators for USB host or
gadget.
config USB_ULPI_BUS
tristate "USB ULPI PHY interface support"
select USB_COMMON
help
UTMI+ Low Pin Interface (ULPI) is specification for a commonly used
USB 2.0 PHY interface. The ULPI specification defines a standard set
of registers that can be used to detect the vendor and product which
allows ULPI to be handled as a bus. This module is the driver for that
bus.
The ULPI interfaces (the buses) are registered by the drivers for USB
controllers which support ULPI register access and have ULPI PHY
attached to them. The ULPI PHY drivers themselves are normal PHY
drivers.
ULPI PHYs provide often functions such as ADP sensing/probing (OTG
protocol) and USB charger detection.
To compile this driver as a module, choose M here: the module will
be called ulpi.
endif # USB_SUPPORT

6
drivers/usb/atm/cxacru.c
View File

@ -1139,10 +1139,8 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
/* instance init */
instance = kzalloc(sizeof(*instance), GFP_KERNEL);
if (!instance) {
usb_dbg(usbatm_instance, "cxacru_bind: no memory for instance data\n");
if (!instance)
return -ENOMEM;
}
instance->usbatm = usbatm_instance;
instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
@ -1168,13 +1166,11 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
}
instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!instance->rcv_urb) {
usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_urb\n");
ret = -ENOMEM;
goto fail;
}
instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!instance->snd_urb) {
usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_urb\n");
ret = -ENOMEM;
goto fail;
}

1
drivers/usb/atm/speedtch.c
View File

@ -817,7 +817,6 @@ static int speedtch_bind(struct usbatm_data *usbatm,
instance = kzalloc(sizeof(*instance), GFP_KERNEL);
if (!instance) {
usb_err(usbatm, "%s: no memory for instance data!\n", __func__);
ret = -ENOMEM;
goto fail_release;
}

13
drivers/usb/atm/ueagle-atm.c
View File

@ -2196,17 +2196,12 @@ static int uea_boot(struct uea_softc *sc)
load_XILINX_firmware(sc);
intr = kmalloc(size, GFP_KERNEL);
if (!intr) {
uea_err(INS_TO_USBDEV(sc),
"cannot allocate interrupt package\n");
if (!intr)
goto err0;
}
sc->urb_int = usb_alloc_urb(0, GFP_KERNEL);
if (!sc->urb_int) {
uea_err(INS_TO_USBDEV(sc), "cannot allocate interrupt URB\n");
if (!sc->urb_int)
goto err1;
}
usb_fill_int_urb(sc->urb_int, sc->usb_dev,
usb_rcvintpipe(sc->usb_dev, UEA_INTR_PIPE),
@ -2561,10 +2556,8 @@ static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf,
}
sc = kzalloc(sizeof(struct uea_softc), GFP_KERNEL);
if (!sc) {
uea_err(usb, "uea_init: not enough memory !\n");
if (!sc)
return -ENOMEM;
}
sc->usb_dev = usb;
usbatm->driver_data = sc;

8
drivers/usb/atm/usbatm.c
View File

@ -819,7 +819,6 @@ static int usbatm_atm_open(struct atm_vcc *vcc)
new = kzalloc(sizeof(struct usbatm_vcc_data), GFP_KERNEL);
if (!new) {
atm_err(instance, "%s: no memory for vcc_data!\n", __func__);
ret = -ENOMEM;
goto fail;
}
@ -1032,10 +1031,8 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
/* instance init */
instance = kzalloc(sizeof(*instance) + sizeof(struct urb *) * (num_rcv_urbs + num_snd_urbs), GFP_KERNEL);
if (!instance) {
dev_err(dev, "%s: no memory for instance data!\n", __func__);
if (!instance)
return -ENOMEM;
}
/* public fields */
@ -1141,7 +1138,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
urb = usb_alloc_urb(iso_packets, GFP_KERNEL);
if (!urb) {
dev_err(dev, "%s: no memory for urb %d!\n", __func__, i);
error = -ENOMEM;
goto fail_unbind;
}
@ -1151,7 +1147,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
/* zero the tx padding to avoid leaking information */
buffer = kzalloc(channel->buf_size, GFP_KERNEL);
if (!buffer) {
dev_err(dev, "%s: no memory for buffer %d!\n", __func__, i);
error = -ENOMEM;
goto fail_unbind;
}
@ -1182,7 +1177,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
instance->cell_buf = kmalloc(instance->rx_channel.stride, GFP_KERNEL);
if (!instance->cell_buf) {
dev_err(dev, "%s: no memory for cell buffer!\n", __func__);
error = -ENOMEM;
goto fail_unbind;
}

3
drivers/usb/chipidea/ci_hdrc_imx.c
View File

@ -140,6 +140,9 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
if (of_find_property(np, "disable-over-current", NULL))
data->disable_oc = 1;
if (of_find_property(np, "over-current-active-high", NULL))
data->oc_polarity = 1;
if (of_find_property(np, "external-vbus-divider", NULL))
data->evdo = 1;

1
drivers/usb/chipidea/ci_hdrc_imx.h
View File

@ -17,6 +17,7 @@ struct imx_usbmisc_data {
int index;
unsigned int disable_oc:1; /* over current detect disabled */
unsigned int oc_polarity:1; /* over current polarity if oc enabled */
unsigned int evdo:1; /* set external vbus divider option */
};

3
drivers/usb/chipidea/host.c
View File

@ -81,12 +81,15 @@ static int ehci_ci_reset(struct usb_hcd *hcd)
{
struct device *dev = hcd->self.controller;
struct ci_hdrc *ci = dev_get_drvdata(dev);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int ret;
ret = ehci_setup(hcd);
if (ret)
return ret;
ehci->need_io_watchdog = 0;
ci_platform_configure(ci);
return ret;

42
drivers/usb/chipidea/udc.c
View File

@ -59,7 +59,7 @@ ctrl_endpt_in_desc = {
*/
static inline int hw_ep_bit(int num, int dir)
{
return num + (dir ? 16 : 0);
return num + ((dir == TX) ? 16 : 0);
}
static inline int ep_to_bit(struct ci_hdrc *ci, int n)
@ -121,9 +121,8 @@ static int hw_ep_flush(struct ci_hdrc *ci, int num, int dir)
*/
static int hw_ep_disable(struct ci_hdrc *ci, int num, int dir)
{
hw_ep_flush(ci, num, dir);
hw_write(ci, OP_ENDPTCTRL + num,
dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
(dir == TX) ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
return 0;
}
@ -139,7 +138,7 @@ static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type)
{
u32 mask, data;
if (dir) {
if (dir == TX) {
mask = ENDPTCTRL_TXT; /* type */
data = type << __ffs(mask);
@ -171,7 +170,7 @@ static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type)
*/
static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir)
{
u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
u32 mask = (dir == TX) ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0;
}
@ -188,6 +187,9 @@ static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
{
int n = hw_ep_bit(num, dir);
/* Synchronize before ep prime */
wmb();
if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
return -EAGAIN;
@ -218,8 +220,8 @@ static int hw_ep_set_halt(struct ci_hdrc *ci, int num, int dir, int value)
do {
enum ci_hw_regs reg = OP_ENDPTCTRL + num;
u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
u32 mask_xs = (dir == TX) ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
u32 mask_xr = (dir == TX) ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
/* data toggle - reserved for EP0 but it's in ESS */
hw_write(ci, reg, mask_xs|mask_xr,
@ -348,8 +350,7 @@ static int add_td_to_list(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq,
if (node == NULL)
return -ENOMEM;
node->ptr = dma_pool_zalloc(hwep->td_pool, GFP_ATOMIC,
&node->dma);
node->ptr = dma_pool_zalloc(hwep->td_pool, GFP_ATOMIC, &node->dma);
if (node->ptr == NULL) {
kfree(node);
return -ENOMEM;
@ -506,8 +507,6 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
hwep->qh.ptr->cap |= mul << __ffs(QH_MULT);
}
wmb(); /* synchronize before ep prime */
ret = hw_ep_prime(ci, hwep->num, hwep->dir,
hwep->type == USB_ENDPOINT_XFER_CONTROL);
done:
@ -534,9 +533,6 @@ static int reprime_dtd(struct ci_hdrc *ci, struct ci_hw_ep *hwep,
hwep->qh.ptr->td.token &=
cpu_to_le32(~(TD_STATUS_HALTED | TD_STATUS_ACTIVE));
/* Synchronize before ep prime */
wmb();
return hw_ep_prime(ci, hwep->num, hwep->dir,
hwep->type == USB_ENDPOINT_XFER_CONTROL);
}
@ -590,7 +586,7 @@ static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
}
if (remaining_length) {
if (hwep->dir) {
if (hwep->dir == TX) {
hwreq->req.status = -EPROTO;
break;
}
@ -1051,9 +1047,9 @@ __acquires(ci->lock)
if (req.wLength != 0)
break;
num = le16_to_cpu(req.wIndex);
dir = num & USB_ENDPOINT_DIR_MASK;
dir = (num & USB_ENDPOINT_DIR_MASK) ? TX : RX;
num &= USB_ENDPOINT_NUMBER_MASK;
if (dir) /* TX */
if (dir == TX)
num += ci->hw_ep_max / 2;
if (!ci->ci_hw_ep[num].wedge) {
spin_unlock(&ci->lock);
@ -1103,9 +1099,9 @@ __acquires(ci->lock)
if (req.wLength != 0)
break;
num = le16_to_cpu(req.wIndex);
dir = num & USB_ENDPOINT_DIR_MASK;
dir = (num & USB_ENDPOINT_DIR_MASK) ? TX : RX;
num &= USB_ENDPOINT_NUMBER_MASK;
if (dir) /* TX */
if (dir == TX)
num += ci->hw_ep_max / 2;
spin_unlock(&ci->lock);
@ -1680,12 +1676,10 @@ static int init_eps(struct ci_hdrc *ci)
usb_ep_set_maxpacket_limit(&hwep->ep, (unsigned short)~0);
INIT_LIST_HEAD(&hwep->qh.queue);
hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
&hwep->qh.dma);
hwep->qh.ptr = dma_pool_zalloc(ci->qh_pool, GFP_KERNEL,
&hwep->qh.dma);
if (hwep->qh.ptr == NULL)
retval = -ENOMEM;
else
memset(hwep->qh.ptr, 0, sizeof(*hwep->qh.ptr));
/*
* set up shorthands for ep0 out and in endpoints,
@ -1999,7 +1993,7 @@ int ci_hdrc_gadget_init(struct ci_hdrc *ci)
if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_DC))
return -ENXIO;
rdrv = devm_kzalloc(ci->dev, sizeof(struct ci_role_driver), GFP_KERNEL);
rdrv = devm_kzalloc(ci->dev, sizeof(*rdrv), GFP_KERNEL);
if (!rdrv)
return -ENOMEM;

22
drivers/usb/chipidea/usbmisc_imx.c
View File

@ -56,6 +56,7 @@
#define MX6_BM_NON_BURST_SETTING BIT(1)
#define MX6_BM_OVER_CUR_DIS BIT(7)
#define MX6_BM_OVER_CUR_POLARITY BIT(8)
#define MX6_BM_WAKEUP_ENABLE BIT(10)
#define MX6_BM_ID_WAKEUP BIT(16)
#define MX6_BM_VBUS_WAKEUP BIT(17)
@ -266,11 +267,14 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
spin_lock_irqsave(&usbmisc->lock, flags);
reg = readl(usbmisc->base + data->index * 4);
if (data->disable_oc) {
reg = readl(usbmisc->base + data->index * 4);
writel(reg | MX6_BM_OVER_CUR_DIS,
usbmisc->base + data->index * 4);
reg |= MX6_BM_OVER_CUR_DIS;
} else if (data->oc_polarity == 1) {
/* High active */
reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
}
writel(reg, usbmisc->base + data->index * 4);
/* SoC non-burst setting */
reg = readl(usbmisc->base + data->index * 4);
@ -365,10 +369,14 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
return -EINVAL;
spin_lock_irqsave(&usbmisc->lock, flags);
reg = readl(usbmisc->base);
if (data->disable_oc) {
reg = readl(usbmisc->base);
writel(reg | MX6_BM_OVER_CUR_DIS, usbmisc->base);
reg |= MX6_BM_OVER_CUR_DIS;
} else if (data->oc_polarity == 1) {
/* High active */
reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY);
}
writel(reg, usbmisc->base);
reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
@ -492,6 +500,10 @@ static const struct of_device_id usbmisc_imx_dt_ids[] = {
.compatible = "fsl,imx6ul-usbmisc",
.data = &imx6sx_usbmisc_ops,
},
{
.compatible = "fsl,imx7d-usbmisc",
.data = &imx7d_usbmisc_ops,
},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);

49
drivers/usb/class/cdc-acm.c
View File

@ -368,17 +368,17 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
if (!test_and_clear_bit(index, &acm->read_urbs_free))
return 0;
dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
res = usb_submit_urb(acm->read_urbs[index], mem_flags);
if (res) {
if (res != -EPERM) {
dev_err(&acm->data->dev,
"%s - usb_submit_urb failed: %d\n",
__func__, res);
"urb %d failed submission with %d\n",
index, res);
}
set_bit(index, &acm->read_urbs_free);
return res;
} else {
dev_vdbg(&acm->data->dev, "submitted urb %d\n", index);
}
return 0;
@ -415,8 +415,9 @@ static void acm_read_bulk_callback(struct urb *urb)
unsigned long flags;
int status = urb->status;
dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
rb->index, urb->actual_length);
dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n",
rb->index, urb->actual_length,
status);
if (!acm->dev) {
set_bit(rb->index, &acm->read_urbs_free);
@ -426,8 +427,6 @@ static void acm_read_bulk_callback(struct urb *urb)
if (status) {
set_bit(rb->index, &acm->read_urbs_free);
dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
__func__, status);
if ((status != -ENOENT) || (urb->actual_length == 0))
return;
}
@ -462,8 +461,7 @@ static void acm_write_bulk(struct urb *urb)
int status = urb->status;
if (status || (urb->actual_length != urb->transfer_buffer_length))
dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
__func__,
dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n",
urb->actual_length,
urb->transfer_buffer_length,
status);
@ -478,8 +476,6 @@ static void acm_softint(struct work_struct *work)
{
struct acm *acm = container_of(work, struct acm, work);
dev_vdbg(&acm->data->dev, "%s\n", __func__);
tty_port_tty_wakeup(&acm->port);
}
@ -492,8 +488,6 @@ static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
struct acm *acm;
int retval;
dev_dbg(tty->dev, "%s\n", __func__);
acm = acm_get_by_minor(tty->index);
if (!acm)
return -ENODEV;
@ -515,8 +509,6 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
{
struct acm *acm = tty->driver_data;
dev_dbg(tty->dev, "%s\n", __func__);
return tty_port_open(&acm->port, tty, filp);
}
@ -545,8 +537,6 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
int retval = -ENODEV;
int i;
dev_dbg(&acm->control->dev, "%s\n", __func__);
mutex_lock(&acm->mutex);
if (acm->disconnected)
goto disconnected;
@ -607,8 +597,6 @@ static void acm_port_destruct(struct tty_port *port)
{
struct acm *acm = container_of(port, struct acm, port);
dev_dbg(&acm->control->dev, "%s\n", __func__);
acm_release_minor(acm);
usb_put_intf(acm->control);
kfree(acm->country_codes);
@ -622,8 +610,6 @@ static void acm_port_shutdown(struct tty_port *port)
struct acm_wb *wb;
int i;
dev_dbg(&acm->control->dev, "%s\n", __func__);
/*
* Need to grab write_lock to prevent race with resume, but no need to
* hold it due to the tty-port initialised flag.
@ -654,21 +640,21 @@ static void acm_port_shutdown(struct tty_port *port)
static void acm_tty_cleanup(struct tty_struct *tty)
{
struct acm *acm = tty->driver_data;
dev_dbg(&acm->control->dev, "%s\n", __func__);
tty_port_put(&acm->port);
}
static void acm_tty_hangup(struct tty_struct *tty)
{
struct acm *acm = tty->driver_data;
dev_dbg(&acm->control->dev, "%s\n", __func__);
tty_port_hangup(&acm->port);
}
static void acm_tty_close(struct tty_struct *tty, struct file *filp)
{
struct acm *acm = tty->driver_data;
dev_dbg(&acm->control->dev, "%s\n", __func__);
tty_port_close(&acm->port, tty, filp);
}
@ -684,7 +670,7 @@ static int acm_tty_write(struct tty_struct *tty,
if (!count)
return 0;
dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count);
spin_lock_irqsave(&acm->write_lock, flags);
wbn = acm_wb_alloc(acm);
@ -701,7 +687,7 @@ static int acm_tty_write(struct tty_struct *tty,
}
count = (count > acm->writesize) ? acm->writesize : count;
dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
dev_vdbg(&acm->data->dev, "writing %d bytes\n", count);
memcpy(wb->buf, buf, count);
wb->len = count;
@ -1193,6 +1179,9 @@ static int acm_probe(struct usb_interface *intf,
return -EINVAL;
}
if (!intf->cur_altsetting)
return -EINVAL;
if (!buflen) {
if (intf->cur_altsetting->endpoint &&
intf->cur_altsetting->endpoint->extralen &&
@ -1246,6 +1235,8 @@ static int acm_probe(struct usb_interface *intf,
dev_dbg(&intf->dev, "no interfaces\n");
return -ENODEV;
}
if (!data_interface->cur_altsetting || !control_interface->cur_altsetting)
return -ENODEV;
if (data_intf_num != call_intf_num)
dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
@ -1533,8 +1524,6 @@ static void stop_data_traffic(struct acm *acm)
{
int i;
dev_dbg(&acm->control->dev, "%s\n", __func__);
usb_kill_urb(acm->ctrlurb);
for (i = 0; i < ACM_NW; i++)
usb_kill_urb(acm->wb[i].urb);
@ -1551,8 +1540,6 @@ static void acm_disconnect(struct usb_interface *intf)
struct tty_struct *tty;
int i;
dev_dbg(&intf->dev, "%s\n", __func__);
/* sibling interface is already cleaning up */
if (!acm)
return;

165
drivers/usb/class/cdc-wdm.c
View File

@ -58,6 +58,7 @@ MODULE_DEVICE_TABLE (usb, wdm_ids);
#define WDM_SUSPENDING 8
#define WDM_RESETTING 9
#define WDM_OVERFLOW 10
#define WDM_DRAIN_ON_OPEN 11
#define WDM_MAX 16
@ -154,6 +155,9 @@ static void wdm_out_callback(struct urb *urb)
wake_up(&desc->wait);
}
/* forward declaration */
static int service_outstanding_interrupt(struct wdm_device *desc);
static void wdm_in_callback(struct urb *urb)
{
struct wdm_device *desc = urb->context;
@ -167,18 +171,18 @@ static void wdm_in_callback(struct urb *urb)
switch (status) {
case -ENOENT:
dev_dbg(&desc->intf->dev,
"nonzero urb status received: -ENOENT");
"nonzero urb status received: -ENOENT\n");
goto skip_error;
case -ECONNRESET:
dev_dbg(&desc->intf->dev,
"nonzero urb status received: -ECONNRESET");
"nonzero urb status received: -ECONNRESET\n");
goto skip_error;
case -ESHUTDOWN:
dev_dbg(&desc->intf->dev,
"nonzero urb status received: -ESHUTDOWN");
"nonzero urb status received: -ESHUTDOWN\n");
goto skip_error;
case -EPIPE:
dev_err(&desc->intf->dev,
dev_dbg(&desc->intf->dev,
"nonzero urb status received: -EPIPE\n");
break;
default:
@ -188,7 +192,13 @@ static void wdm_in_callback(struct urb *urb)
}
}
desc->rerr = status;
/*
* only set a new error if there is no previous error.
* Errors are only cleared during read/open
*/
if (desc->rerr == 0)
desc->rerr = status;
if (length + desc->length > desc->wMaxCommand) {
/* The buffer would overflow */
set_bit(WDM_OVERFLOW, &desc->flags);
@ -200,10 +210,40 @@ static void wdm_in_callback(struct urb *urb)
desc->reslength = length;
}
}
/*
* Handling devices with the WDM_DRAIN_ON_OPEN flag set:
* If desc->resp_count is unset, then the urb was submitted
* without a prior notification. If the device returned any
* data, then this implies that it had messages queued without
* notifying us. Continue reading until that queue is flushed.
*/
if (!desc->resp_count) {
if (!length) {
/* do not propagate the expected -EPIPE */
desc->rerr = 0;
goto unlock;
}
dev_dbg(&desc->intf->dev, "got %d bytes without notification\n", length);
set_bit(WDM_RESPONDING, &desc->flags);
usb_submit_urb(desc->response, GFP_ATOMIC);
}
skip_error:
set_bit(WDM_READ, &desc->flags);
wake_up(&desc->wait);
set_bit(WDM_READ, &desc->flags);
if (desc->rerr) {
/*
* Since there was an error, userspace may decide to not read
* any data after poll'ing.
* We should respond to further attempts from the device to send
* data, so that we can get unstuck.
*/
service_outstanding_interrupt(desc);
}
unlock:
spin_unlock(&desc->iuspin);
}
@ -244,18 +284,18 @@ static void wdm_int_callback(struct urb *urb)
switch (dr->bNotificationType) {
case USB_CDC_NOTIFY_RESPONSE_AVAILABLE:
dev_dbg(&desc->intf->dev,
"NOTIFY_RESPONSE_AVAILABLE received: index %d len %d",
"NOTIFY_RESPONSE_AVAILABLE received: index %d len %d\n",
le16_to_cpu(dr->wIndex), le16_to_cpu(dr->wLength));
break;
case USB_CDC_NOTIFY_NETWORK_CONNECTION:
dev_dbg(&desc->intf->dev,
"NOTIFY_NETWORK_CONNECTION %s network",
"NOTIFY_NETWORK_CONNECTION %s network\n",
dr->wValue ? "connected to" : "disconnected from");
goto exit;
case USB_CDC_NOTIFY_SPEED_CHANGE:
dev_dbg(&desc->intf->dev, "SPEED_CHANGE received (len %u)",
dev_dbg(&desc->intf->dev, "SPEED_CHANGE received (len %u)\n",
urb->actual_length);
goto exit;
default:
@ -274,8 +314,7 @@ static void wdm_int_callback(struct urb *urb)
&& !test_bit(WDM_DISCONNECTING, &desc->flags)
&& !test_bit(WDM_SUSPENDING, &desc->flags)) {
rv = usb_submit_urb(desc->response, GFP_ATOMIC);
dev_dbg(&desc->intf->dev, "%s: usb_submit_urb %d",
__func__, rv);
dev_dbg(&desc->intf->dev, "submit response URB %d\n", rv);
}
spin_unlock(&desc->iuspin);
if (rv < 0) {
@ -417,7 +456,7 @@ static ssize_t wdm_write
rv = usb_translate_errors(rv);
goto out_free_mem_pm;
} else {
dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d",
dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d\n",
le16_to_cpu(req->wIndex));
}
@ -436,17 +475,14 @@ out_free_mem:
}
/*
* clear WDM_READ flag and possibly submit the read urb if resp_count
* is non-zero.
* Submit the read urb if resp_count is non-zero.
*
* Called with desc->iuspin locked
*/
static int clear_wdm_read_flag(struct wdm_device *desc)
static int service_outstanding_interrupt(struct wdm_device *desc)
{
int rv = 0;
clear_bit(WDM_READ, &desc->flags);
/* submit read urb only if the device is waiting for it */
if (!desc->resp_count || !--desc->resp_count)
goto out;
@ -537,8 +573,9 @@ retry:
}
if (!desc->reslength) { /* zero length read */
dev_dbg(&desc->intf->dev, "%s: zero length - clearing WDM_READ\n", __func__);
rv = clear_wdm_read_flag(desc);
dev_dbg(&desc->intf->dev, "zero length - clearing WDM_READ\n");
clear_bit(WDM_READ, &desc->flags);
rv = service_outstanding_interrupt(desc);
spin_unlock_irq(&desc->iuspin);
if (rv < 0)
goto err;
@ -563,8 +600,10 @@ retry:
desc->length -= cntr;
/* in case we had outstanding data */
if (!desc->length)
clear_wdm_read_flag(desc);
if (!desc->length) {
clear_bit(WDM_READ, &desc->flags);
service_outstanding_interrupt(desc);
}
spin_unlock_irq(&desc->iuspin);
rv = cntr;
@ -647,6 +686,17 @@ static int wdm_open(struct inode *inode, struct file *file)
dev_err(&desc->intf->dev,
"Error submitting int urb - %d\n", rv);
rv = usb_translate_errors(rv);
} else if (test_bit(WDM_DRAIN_ON_OPEN, &desc->flags)) {
/*
* Some devices keep pending messages queued
* without resending notifications. We must
* flush the message queue before we can
* assume a one-to-one relationship between
* notifications and messages in the queue
*/
dev_dbg(&desc->intf->dev, "draining queued data\n");
set_bit(WDM_RESPONDING, &desc->flags);
rv = usb_submit_urb(desc->response, GFP_KERNEL);
}
} else {
rv = 0;
@ -673,7 +723,7 @@ static int wdm_release(struct inode *inode, struct file *file)
if (!desc->count) {
if (!test_bit(WDM_DISCONNECTING, &desc->flags)) {
dev_dbg(&desc->intf->dev, "wdm_release: cleanup");
dev_dbg(&desc->intf->dev, "wdm_release: cleanup\n");
kill_urbs(desc);
spin_lock_irq(&desc->iuspin);
desc->resp_count = 0;
@ -753,7 +803,8 @@ static void wdm_rxwork(struct work_struct *work)
/* --- hotplug --- */
static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep,
u16 bufsize, int (*manage_power)(struct usb_interface *, int))
u16 bufsize, int (*manage_power)(struct usb_interface *, int),
bool drain_on_open)
{
int rv = -ENOMEM;
struct wdm_device *desc;
@ -840,6 +891,68 @@ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor
desc->manage_power = manage_power;
/*
* "drain_on_open" enables a hack to work around a firmware
* issue observed on network functions, in particular MBIM
* functions.
*
* Quoting section 7 of the CDC-WMC r1.1 specification:
*
* "The firmware shall interpret GetEncapsulatedResponse as a
* request to read response bytes. The firmware shall send
* the next wLength bytes from the response. The firmware
* shall allow the host to retrieve data using any number of
* GetEncapsulatedResponse requests. The firmware shall
* return a zero- length reply if there are no data bytes
* available.
*
* The firmware shall send ResponseAvailable notifications
* periodically, using any appropriate algorithm, to inform
* the host that there is data available in the reply
* buffer. The firmware is allowed to send ResponseAvailable
* notifications even if there is no data available, but
* this will obviously reduce overall performance."
*
* These requirements, although they make equally sense, are
* often not implemented by network functions. Some firmwares
* will queue data indefinitely, without ever resending a
* notification. The result is that the driver and firmware
* loses "syncronization" if the driver ever fails to respond
* to a single notification, something which easily can happen
* on release(). When this happens, the driver will appear to
* never receive notifications for the most current data. Each
* notification will only cause a single read, which returns
* the oldest data in the firmware's queue.
*
* The "drain_on_open" hack resolves the situation by draining
* data from the firmware until none is returned, without a
* prior notification.
*
* This will inevitably race with the firmware, risking that
* we read data from the device before handling the associated
* notification. To make things worse, some of the devices
* needing the hack do not implement the "return zero if no
* data is available" requirement either. Instead they return
* an error on the subsequent read in this case. This means
* that "winning" the race can cause an unexpected EIO to
* userspace.
*
* "winning" the race is more likely on resume() than on
* open(), and the unexpected error is more harmful in the
* middle of an open session. The hack is therefore only
* applied on open(), and not on resume() where it logically
* would be equally necessary. So we define open() as the only
* driver <-> device "syncronization point". Should we happen
* to lose a notification after open(), then syncronization
* will be lost until release()
*
* The hack should not be enabled for CDC WDM devices
* conforming to the CDC-WMC r1.1 specification. This is
* ensured by setting drain_on_open to false in wdm_probe().
*/
if (drain_on_open)
set_bit(WDM_DRAIN_ON_OPEN, &desc->flags);
spin_lock(&wdm_device_list_lock);
list_add(&desc->device_list, &wdm_device_list);
spin_unlock(&wdm_device_list_lock);
@ -893,7 +1006,7 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
goto err;
ep = &iface->endpoint[0].desc;
rv = wdm_create(intf, ep, maxcom, &wdm_manage_power);
rv = wdm_create(intf, ep, maxcom, &wdm_manage_power, false);
err:
return rv;
@ -925,7 +1038,7 @@ struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf,
{
int rv = -EINVAL;
rv = wdm_create(intf, ep, bufsize, manage_power);
rv = wdm_create(intf, ep, bufsize, manage_power, true);
if (rv < 0)
goto err;
@ -967,7 +1080,7 @@ static void wdm_disconnect(struct usb_interface *intf)
if (!desc->count)
cleanup(desc);
else
dev_dbg(&intf->dev, "%s: %d open files - postponing cleanup\n", __func__, desc->count);
dev_dbg(&intf->dev, "%d open files - postponing cleanup\n", desc->count);
mutex_unlock(&wdm_mutex);
}

11
drivers/usb/class/usbtmc.c
View File

@ -141,6 +141,7 @@ static void usbtmc_delete(struct kref *kref)
struct usbtmc_device_data *data = to_usbtmc_data(kref);
usb_put_dev(data->usb_dev);
kfree(data);
}
static int usbtmc_open(struct inode *inode, struct file *filp)
@ -1379,7 +1380,7 @@ static int usbtmc_probe(struct usb_interface *intf,
dev_dbg(&intf->dev, "%s called\n", __func__);
data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
@ -1467,10 +1468,8 @@ static int usbtmc_probe(struct usb_interface *intf,
if (data->iin_ep_present) {
/* allocate int urb */
data->iin_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!data->iin_urb) {
dev_err(&intf->dev, "Failed to allocate int urb\n");
if (!data->iin_urb)
goto error_register;
}
/* will reference data in int urb */
kref_get(&data->kref);
@ -1478,10 +1477,8 @@ static int usbtmc_probe(struct usb_interface *intf,
/* allocate buffer for interrupt in */
data->iin_buffer = kmalloc(data->iin_wMaxPacketSize,
GFP_KERNEL);
if (!data->iin_buffer) {
dev_err(&intf->dev, "Failed to allocate int buf\n");
if (!data->iin_buffer)
goto error_register;
}
/* fill interrupt urb */
usb_fill_int_urb(data->iin_urb, data->usb_dev,

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