phy: for 5.3
*) Add a new PHY driver for Qualcomm PCIe2 PHY
*) Add a new PHY driver for Mixel DPHY present in i.MX8
*) Fix Qualcomm QMP UFS PHY driver from incorrectly reporting that
PHY enable failed
*) Fix _BUG_ on Amlogic G12A USB3 + PCIE Combo PHY Driver due to
calling a sleeping function from invalid context
*) Fix WARN_ON dump on rcar-gen3-usb2 PHY driver caused due to
imbalance powered flag
*) Fix .cocci and sparse warnings
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Merge tag 'phy-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next
phy: for 5.3
*) Add a new PHY driver for Qualcomm PCIe2 PHY
*) Add a new PHY driver for Mixel DPHY present in i.MX8
*) Fix Qualcomm QMP UFS PHY driver from incorrectly reporting that
PHY enable failed
*) Fix _BUG_ on Amlogic G12A USB3 + PCIE Combo PHY Driver due to
calling a sleeping function from invalid context
*) Fix WARN_ON dump on rcar-gen3-usb2 PHY driver caused due to
imbalance powered flag
*) Fix .cocci and sparse warnings
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
* tag 'phy-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy:
phy: qcom-qmp: Raise qcom_qmp_phy_enable() polling delay
phy: meson-g12a-usb3-pcie: disable locking for cr_regmap
phy: Add driver for mixel mipi dphy found on NXP's i.MX8 SoCs
dt-bindings: phy: Add documentation for mixel dphy
dt-bindings: phy-pxa-usb: add bindings
phy: renesas: rcar-gen3-usb2: fix imbalance powered flag
phy: qcom-qmp: Drop useless msm8998_pciephy_cfg setting
phy: qcom-qmp: Correct READY_STATUS poll break condition
phy: ti: am654-serdes: Make serdes_am654_xlate() static
phy: usb: phy-brcm-usb: Fix platform_no_drv_owner.cocci warnings
phy: samsung: Use struct_size() in devm_kzalloc()
phy: qcom: Add Qualcomm PCIe2 PHY driver
dt-bindings: phy: Add binding for Qualcomm PCIe2 PHY
alistair/sunxi64-5.4-dsi
Greg Kroah-Hartman
commit
aa9083faa1
|
|
@ -0,0 +1,29 @@
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|||
Mixel DSI PHY for i.MX8
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The Mixel MIPI-DSI PHY IP block is e.g. found on i.MX8 platforms (along the
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MIPI-DSI IP from Northwest Logic). It represents the physical layer for the
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electrical signals for DSI.
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Required properties:
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- compatible: Must be:
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- "fsl,imx8mq-mipi-dphy"
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- clocks: Must contain an entry for each entry in clock-names.
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- clock-names: Must contain the following entries:
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- "phy_ref": phandle and specifier referring to the DPHY ref clock
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- reg: the register range of the PHY controller
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- #phy-cells: number of cells in PHY, as defined in
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Documentation/devicetree/bindings/phy/phy-bindings.txt
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this must be <0>
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Optional properties:
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- power-domains: phandle to power domain
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Example:
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dphy: dphy@30a0030 {
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compatible = "fsl,imx8mq-mipi-dphy";
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clocks = <&clk IMX8MQ_CLK_DSI_PHY_REF>;
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clock-names = "phy_ref";
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reg = <0x30a00300 0x100>;
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power-domains = <&pd_mipi0>;
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#phy-cells = <0>;
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};
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@ -0,0 +1,18 @@
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Marvell PXA USB PHY
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-------------------
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Required properties:
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- compatible: one of: "marvell,mmp2-usb-phy", "marvell,pxa910-usb-phy",
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"marvell,pxa168-usb-phy",
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- #phy-cells: must be 0
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Example:
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usb-phy: usbphy@d4207000 {
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compatible = "marvell,mmp2-usb-phy";
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reg = <0xd4207000 0x40>;
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#phy-cells = <0>;
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status = "okay";
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};
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This document explains the device tree binding. For general
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information about PHY subsystem refer to Documentation/phy.txt
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@ -0,0 +1,42 @@
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Qualcomm PCIe2 PHY controller
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=============================
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The Qualcomm PCIe2 PHY is a Synopsys based phy found in a number of Qualcomm
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platforms.
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Required properties:
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- compatible: compatible list, should be:
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"qcom,qcs404-pcie2-phy", "qcom,pcie2-phy"
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- reg: offset and length of the PHY register set.
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- #phy-cells: must be 0.
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- clocks: a clock-specifier pair for the "pipe" clock
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- vdda-vp-supply: phandle to low voltage regulator
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- vdda-vph-supply: phandle to high voltage regulator
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- resets: reset-specifier pairs for the "phy" and "pipe" resets
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- reset-names: list of resets, should contain:
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"phy" and "pipe"
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- clock-output-names: name of the outgoing clock signal from the PHY PLL
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- #clock-cells: must be 0
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Example:
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phy@7786000 {
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compatible = "qcom,qcs404-pcie2-phy", "qcom,pcie2-phy";
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reg = <0x07786000 0xb8>;
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clocks = <&gcc GCC_PCIE_0_PIPE_CLK>;
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resets = <&gcc GCC_PCIEPHY_0_PHY_BCR>,
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<&gcc GCC_PCIE_0_PIPE_ARES>;
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reset-names = "phy", "pipe";
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vdda-vp-supply = <&vreg_l3_1p05>;
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vdda-vph-supply = <&vreg_l5_1p8>;
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clock-output-names = "pcie_0_pipe_clk";
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#clock-cells = <0>;
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#phy-cells = <0>;
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};
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@ -188,7 +188,7 @@ static const struct regmap_config phy_g12a_usb3_pcie_cr_regmap_conf = {
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.reg_read = phy_g12a_usb3_pcie_cr_bus_read,
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.reg_write = phy_g12a_usb3_pcie_cr_bus_write,
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.max_register = 0xffff,
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.fast_io = true,
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.disable_locking = true,
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};
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static int phy_g12a_usb3_init(struct phy *phy)
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@ -443,7 +443,6 @@ static struct platform_driver brcm_usb_driver = {
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.remove = brcm_usb_phy_remove,
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.driver = {
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.name = "brcmstb-usb-phy",
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.owner = THIS_MODULE,
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.pm = &brcm_usb_phy_pm_ops,
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.of_match_table = brcm_usb_dt_ids,
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},
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@ -4,3 +4,13 @@ config PHY_FSL_IMX8MQ_USB
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depends on OF && HAS_IOMEM
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select GENERIC_PHY
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default ARCH_MXC && ARM64
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config PHY_MIXEL_MIPI_DPHY
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tristate "Mixel MIPI DSI PHY support"
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depends on OF && HAS_IOMEM
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select GENERIC_PHY
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select GENERIC_PHY_MIPI_DPHY
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select REGMAP_MMIO
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help
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Enable this to add support for the Mixel DSI PHY as found
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on NXP's i.MX8 family of SOCs.
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@ -1,2 +1,3 @@
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# SPDX-License-Identifier: GPL-2.0-only
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obj-$(CONFIG_PHY_FSL_IMX8MQ_USB) += phy-fsl-imx8mq-usb.o
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obj-$(CONFIG_PHY_MIXEL_MIPI_DPHY) += phy-fsl-imx8-mipi-dphy.o
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|
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@ -0,0 +1,497 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2017,2018 NXP
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* Copyright 2019 Purism SPC
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*/
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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/* DPHY registers */
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#define DPHY_PD_DPHY 0x00
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#define DPHY_M_PRG_HS_PREPARE 0x04
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#define DPHY_MC_PRG_HS_PREPARE 0x08
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#define DPHY_M_PRG_HS_ZERO 0x0c
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#define DPHY_MC_PRG_HS_ZERO 0x10
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#define DPHY_M_PRG_HS_TRAIL 0x14
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#define DPHY_MC_PRG_HS_TRAIL 0x18
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#define DPHY_PD_PLL 0x1c
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#define DPHY_TST 0x20
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#define DPHY_CN 0x24
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#define DPHY_CM 0x28
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#define DPHY_CO 0x2c
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#define DPHY_LOCK 0x30
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#define DPHY_LOCK_BYP 0x34
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#define DPHY_REG_BYPASS_PLL 0x4C
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#define MBPS(x) ((x) * 1000000)
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#define DATA_RATE_MAX_SPEED MBPS(1500)
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#define DATA_RATE_MIN_SPEED MBPS(80)
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#define PLL_LOCK_SLEEP 10
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#define PLL_LOCK_TIMEOUT 1000
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#define CN_BUF 0xcb7a89c0
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#define CO_BUF 0x63
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#define CM(x) ( \
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((x) < 32) ? 0xe0 | ((x) - 16) : \
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((x) < 64) ? 0xc0 | ((x) - 32) : \
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((x) < 128) ? 0x80 | ((x) - 64) : \
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((x) - 128))
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#define CN(x) (((x) == 1) ? 0x1f : (((CN_BUF) >> ((x) - 1)) & 0x1f))
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#define CO(x) ((CO_BUF) >> (8 - (x)) & 0x03)
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/* PHY power on is active low */
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#define PWR_ON 0
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#define PWR_OFF 1
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enum mixel_dphy_devtype {
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MIXEL_IMX8MQ,
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};
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struct mixel_dphy_devdata {
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u8 reg_tx_rcal;
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u8 reg_auto_pd_en;
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u8 reg_rxlprp;
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u8 reg_rxcdrp;
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u8 reg_rxhs_settle;
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};
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static const struct mixel_dphy_devdata mixel_dphy_devdata[] = {
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[MIXEL_IMX8MQ] = {
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.reg_tx_rcal = 0x38,
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.reg_auto_pd_en = 0x3c,
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.reg_rxlprp = 0x40,
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.reg_rxcdrp = 0x44,
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.reg_rxhs_settle = 0x48,
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},
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};
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struct mixel_dphy_cfg {
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/* DPHY PLL parameters */
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u32 cm;
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u32 cn;
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u32 co;
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/* DPHY register values */
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u8 mc_prg_hs_prepare;
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u8 m_prg_hs_prepare;
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u8 mc_prg_hs_zero;
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u8 m_prg_hs_zero;
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u8 mc_prg_hs_trail;
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u8 m_prg_hs_trail;
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u8 rxhs_settle;
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};
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struct mixel_dphy_priv {
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struct mixel_dphy_cfg cfg;
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struct regmap *regmap;
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struct clk *phy_ref_clk;
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const struct mixel_dphy_devdata *devdata;
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};
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static const struct regmap_config mixel_dphy_regmap_config = {
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.reg_bits = 8,
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.val_bits = 32,
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.reg_stride = 4,
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.max_register = DPHY_REG_BYPASS_PLL,
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.name = "mipi-dphy",
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};
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static int phy_write(struct phy *phy, u32 value, unsigned int reg)
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{
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struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
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int ret;
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ret = regmap_write(priv->regmap, reg, value);
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if (ret < 0)
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dev_err(&phy->dev, "Failed to write DPHY reg %d: %d\n", reg,
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ret);
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return ret;
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}
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/*
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* Find a ratio close to the desired one using continued fraction
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||||
* approximation ending either at exact match or maximum allowed
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* nominator, denominator.
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||||
*/
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static void get_best_ratio(u32 *pnum, u32 *pdenom, u32 max_n, u32 max_d)
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{
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u32 a = *pnum;
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u32 b = *pdenom;
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||||
u32 c;
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u32 n[] = {0, 1};
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u32 d[] = {1, 0};
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u32 whole;
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||||
unsigned int i = 1;
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||||
|
||||
while (b) {
|
||||
i ^= 1;
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||||
whole = a / b;
|
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n[i] += (n[i ^ 1] * whole);
|
||||
d[i] += (d[i ^ 1] * whole);
|
||||
if ((n[i] > max_n) || (d[i] > max_d)) {
|
||||
i ^= 1;
|
||||
break;
|
||||
}
|
||||
c = a - (b * whole);
|
||||
a = b;
|
||||
b = c;
|
||||
}
|
||||
*pnum = n[i];
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||||
*pdenom = d[i];
|
||||
}
|
||||
|
||||
static int mixel_dphy_config_from_opts(struct phy *phy,
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||||
struct phy_configure_opts_mipi_dphy *dphy_opts,
|
||||
struct mixel_dphy_cfg *cfg)
|
||||
{
|
||||
struct mixel_dphy_priv *priv = dev_get_drvdata(phy->dev.parent);
|
||||
unsigned long ref_clk = clk_get_rate(priv->phy_ref_clk);
|
||||
u32 lp_t, numerator, denominator;
|
||||
unsigned long long tmp;
|
||||
u32 n;
|
||||
int i;
|
||||
|
||||
if (dphy_opts->hs_clk_rate > DATA_RATE_MAX_SPEED ||
|
||||
dphy_opts->hs_clk_rate < DATA_RATE_MIN_SPEED)
|
||||
return -EINVAL;
|
||||
|
||||
numerator = dphy_opts->hs_clk_rate;
|
||||
denominator = ref_clk;
|
||||
get_best_ratio(&numerator, &denominator, 255, 256);
|
||||
if (!numerator || !denominator) {
|
||||
dev_err(&phy->dev, "Invalid %d/%d for %ld/%ld\n",
|
||||
numerator, denominator,
|
||||
dphy_opts->hs_clk_rate, ref_clk);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
while ((numerator < 16) && (denominator <= 128)) {
|
||||
numerator <<= 1;
|
||||
denominator <<= 1;
|
||||
}
|
||||
/*
|
||||
* CM ranges between 16 and 255
|
||||
* CN ranges between 1 and 32
|
||||
* CO is power of 2: 1, 2, 4, 8
|
||||
*/
|
||||
i = __ffs(denominator);
|
||||
if (i > 3)
|
||||
i = 3;
|
||||
cfg->cn = denominator >> i;
|
||||
cfg->co = 1 << i;
|
||||
cfg->cm = numerator;
|
||||
|
||||
if (cfg->cm < 16 || cfg->cm > 255 ||
|
||||
cfg->cn < 1 || cfg->cn > 32 ||
|
||||
cfg->co < 1 || cfg->co > 8) {
|
||||
dev_err(&phy->dev, "Invalid CM/CN/CO values: %u/%u/%u\n",
|
||||
cfg->cm, cfg->cn, cfg->co);
|
||||
dev_err(&phy->dev, "for hs_clk/ref_clk=%ld/%ld ~ %d/%d\n",
|
||||
dphy_opts->hs_clk_rate, ref_clk,
|
||||
numerator, denominator);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
dev_dbg(&phy->dev, "hs_clk/ref_clk=%ld/%ld ~ %d/%d\n",
|
||||
dphy_opts->hs_clk_rate, ref_clk, numerator, denominator);
|
||||
|
||||
/* LP clock period */
|
||||
tmp = 1000000000000LL;
|
||||
do_div(tmp, dphy_opts->lp_clk_rate); /* ps */
|
||||
if (tmp > ULONG_MAX)
|
||||
return -EINVAL;
|
||||
|
||||
lp_t = tmp;
|
||||
dev_dbg(&phy->dev, "LP clock %lu, period: %u ps\n",
|
||||
dphy_opts->lp_clk_rate, lp_t);
|
||||
|
||||
/* hs_prepare: in lp clock periods */
|
||||
if (2 * dphy_opts->hs_prepare > 5 * lp_t) {
|
||||
dev_err(&phy->dev,
|
||||
"hs_prepare (%u) > 2.5 * lp clock period (%u)\n",
|
||||
dphy_opts->hs_prepare, lp_t);
|
||||
return -EINVAL;
|
||||
}
|
||||
/* 00: lp_t, 01: 1.5 * lp_t, 10: 2 * lp_t, 11: 2.5 * lp_t */
|
||||
if (dphy_opts->hs_prepare < lp_t) {
|
||||
n = 0;
|
||||
} else {
|
||||
tmp = 2 * (dphy_opts->hs_prepare - lp_t);
|
||||
do_div(tmp, lp_t);
|
||||
n = tmp;
|
||||
}
|
||||
cfg->m_prg_hs_prepare = n;
|
||||
|
||||
/* clk_prepare: in lp clock periods */
|
||||
if (2 * dphy_opts->clk_prepare > 3 * lp_t) {
|
||||
dev_err(&phy->dev,
|
||||
"clk_prepare (%u) > 1.5 * lp clock period (%u)\n",
|
||||
dphy_opts->clk_prepare, lp_t);
|
||||
return -EINVAL;
|
||||
}
|
||||
/* 00: lp_t, 01: 1.5 * lp_t */
|
||||
cfg->mc_prg_hs_prepare = dphy_opts->clk_prepare > lp_t ? 1 : 0;
|
||||
|
||||
/* hs_zero: formula from NXP BSP */
|
||||
n = (144 * (dphy_opts->hs_clk_rate / 1000000) - 47500) / 10000;
|
||||
cfg->m_prg_hs_zero = n < 1 ? 1 : n;
|
||||
|
||||
/* clk_zero: formula from NXP BSP */
|
||||
n = (34 * (dphy_opts->hs_clk_rate / 1000000) - 2500) / 1000;
|
||||
cfg->mc_prg_hs_zero = n < 1 ? 1 : n;
|
||||
|
||||
/* clk_trail, hs_trail: formula from NXP BSP */
|
||||
n = (103 * (dphy_opts->hs_clk_rate / 1000000) + 10000) / 10000;
|
||||
if (n > 15)
|
||||
n = 15;
|
||||
if (n < 1)
|
||||
n = 1;
|
||||
cfg->m_prg_hs_trail = n;
|
||||
cfg->mc_prg_hs_trail = n;
|
||||
|
||||
/* rxhs_settle: formula from NXP BSP */
|
||||
if (dphy_opts->hs_clk_rate < MBPS(80))
|
||||
cfg->rxhs_settle = 0x0d;
|
||||
else if (dphy_opts->hs_clk_rate < MBPS(90))
|
||||
cfg->rxhs_settle = 0x0c;
|
||||
else if (dphy_opts->hs_clk_rate < MBPS(125))
|
||||
cfg->rxhs_settle = 0x0b;
|
||||
else if (dphy_opts->hs_clk_rate < MBPS(150))
|
||||
cfg->rxhs_settle = 0x0a;
|
||||
else if (dphy_opts->hs_clk_rate < MBPS(225))
|
||||
cfg->rxhs_settle = 0x09;
|
||||
else if (dphy_opts->hs_clk_rate < MBPS(500))
|
||||
cfg->rxhs_settle = 0x08;
|
||||
else
|
||||
cfg->rxhs_settle = 0x07;
|
||||
|
||||
dev_dbg(&phy->dev, "phy_config: %u %u %u %u %u %u %u\n",
|
||||
cfg->m_prg_hs_prepare, cfg->mc_prg_hs_prepare,
|
||||
cfg->m_prg_hs_zero, cfg->mc_prg_hs_zero,
|
||||
cfg->m_prg_hs_trail, cfg->mc_prg_hs_trail,
|
||||
cfg->rxhs_settle);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mixel_phy_set_hs_timings(struct phy *phy)
|
||||
{
|
||||
struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
|
||||
|
||||
phy_write(phy, priv->cfg.m_prg_hs_prepare, DPHY_M_PRG_HS_PREPARE);
|
||||
phy_write(phy, priv->cfg.mc_prg_hs_prepare, DPHY_MC_PRG_HS_PREPARE);
|
||||
phy_write(phy, priv->cfg.m_prg_hs_zero, DPHY_M_PRG_HS_ZERO);
|
||||
phy_write(phy, priv->cfg.mc_prg_hs_zero, DPHY_MC_PRG_HS_ZERO);
|
||||
phy_write(phy, priv->cfg.m_prg_hs_trail, DPHY_M_PRG_HS_TRAIL);
|
||||
phy_write(phy, priv->cfg.mc_prg_hs_trail, DPHY_MC_PRG_HS_TRAIL);
|
||||
phy_write(phy, priv->cfg.rxhs_settle, priv->devdata->reg_rxhs_settle);
|
||||
}
|
||||
|
||||
static int mixel_dphy_set_pll_params(struct phy *phy)
|
||||
{
|
||||
struct mixel_dphy_priv *priv = dev_get_drvdata(phy->dev.parent);
|
||||
|
||||
if (priv->cfg.cm < 16 || priv->cfg.cm > 255 ||
|
||||
priv->cfg.cn < 1 || priv->cfg.cn > 32 ||
|
||||
priv->cfg.co < 1 || priv->cfg.co > 8) {
|
||||
dev_err(&phy->dev, "Invalid CM/CN/CO values! (%u/%u/%u)\n",
|
||||
priv->cfg.cm, priv->cfg.cn, priv->cfg.co);
|
||||
return -EINVAL;
|
||||
}
|
||||
dev_dbg(&phy->dev, "Using CM:%u CN:%u CO:%u\n",
|
||||
priv->cfg.cm, priv->cfg.cn, priv->cfg.co);
|
||||
phy_write(phy, CM(priv->cfg.cm), DPHY_CM);
|
||||
phy_write(phy, CN(priv->cfg.cn), DPHY_CN);
|
||||
phy_write(phy, CO(priv->cfg.co), DPHY_CO);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mixel_dphy_configure(struct phy *phy, union phy_configure_opts *opts)
|
||||
{
|
||||
struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
|
||||
struct mixel_dphy_cfg cfg = { 0 };
|
||||
int ret;
|
||||
|
||||
ret = mixel_dphy_config_from_opts(phy, &opts->mipi_dphy, &cfg);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Update the configuration */
|
||||
memcpy(&priv->cfg, &cfg, sizeof(struct mixel_dphy_cfg));
|
||||
|
||||
phy_write(phy, 0x00, DPHY_LOCK_BYP);
|
||||
phy_write(phy, 0x01, priv->devdata->reg_tx_rcal);
|
||||
phy_write(phy, 0x00, priv->devdata->reg_auto_pd_en);
|
||||
phy_write(phy, 0x02, priv->devdata->reg_rxlprp);
|
||||
phy_write(phy, 0x02, priv->devdata->reg_rxcdrp);
|
||||
phy_write(phy, 0x25, DPHY_TST);
|
||||
|
||||
mixel_phy_set_hs_timings(phy);
|
||||
ret = mixel_dphy_set_pll_params(phy);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mixel_dphy_validate(struct phy *phy, enum phy_mode mode, int submode,
|
||||
union phy_configure_opts *opts)
|
||||
{
|
||||
struct mixel_dphy_cfg cfg = { 0 };
|
||||
|
||||
if (mode != PHY_MODE_MIPI_DPHY)
|
||||
return -EINVAL;
|
||||
|
||||
return mixel_dphy_config_from_opts(phy, &opts->mipi_dphy, &cfg);
|
||||
}
|
||||
|
||||
static int mixel_dphy_init(struct phy *phy)
|
||||
{
|
||||
phy_write(phy, PWR_OFF, DPHY_PD_PLL);
|
||||
phy_write(phy, PWR_OFF, DPHY_PD_DPHY);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mixel_dphy_exit(struct phy *phy)
|
||||
{
|
||||
phy_write(phy, 0, DPHY_CM);
|
||||
phy_write(phy, 0, DPHY_CN);
|
||||
phy_write(phy, 0, DPHY_CO);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mixel_dphy_power_on(struct phy *phy)
|
||||
{
|
||||
struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
|
||||
u32 locked;
|
||||
int ret;
|
||||
|
||||
ret = clk_prepare_enable(priv->phy_ref_clk);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
phy_write(phy, PWR_ON, DPHY_PD_PLL);
|
||||
ret = regmap_read_poll_timeout(priv->regmap, DPHY_LOCK, locked,
|
||||
locked, PLL_LOCK_SLEEP,
|
||||
PLL_LOCK_TIMEOUT);
|
||||
if (ret < 0) {
|
||||
dev_err(&phy->dev, "Could not get DPHY lock (%d)!\n", ret);
|
||||
goto clock_disable;
|
||||
}
|
||||
phy_write(phy, PWR_ON, DPHY_PD_DPHY);
|
||||
|
||||
return 0;
|
||||
clock_disable:
|
||||
clk_disable_unprepare(priv->phy_ref_clk);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mixel_dphy_power_off(struct phy *phy)
|
||||
{
|
||||
struct mixel_dphy_priv *priv = phy_get_drvdata(phy);
|
||||
|
||||
phy_write(phy, PWR_OFF, DPHY_PD_PLL);
|
||||
phy_write(phy, PWR_OFF, DPHY_PD_DPHY);
|
||||
|
||||
clk_disable_unprepare(priv->phy_ref_clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct phy_ops mixel_dphy_phy_ops = {
|
||||
.init = mixel_dphy_init,
|
||||
.exit = mixel_dphy_exit,
|
||||
.power_on = mixel_dphy_power_on,
|
||||
.power_off = mixel_dphy_power_off,
|
||||
.configure = mixel_dphy_configure,
|
||||
.validate = mixel_dphy_validate,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static const struct of_device_id mixel_dphy_of_match[] = {
|
||||
{ .compatible = "fsl,imx8mq-mipi-dphy",
|
||||
.data = &mixel_dphy_devdata[MIXEL_IMX8MQ] },
|
||||
{ /* sentinel */ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, mixel_dphy_of_match);
|
||||
|
||||
static int mixel_dphy_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct device_node *np = dev->of_node;
|
||||
struct phy_provider *phy_provider;
|
||||
struct mixel_dphy_priv *priv;
|
||||
struct resource *res;
|
||||
struct phy *phy;
|
||||
void __iomem *base;
|
||||
|
||||
if (!np)
|
||||
return -ENODEV;
|
||||
|
||||
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->devdata = of_device_get_match_data(&pdev->dev);
|
||||
if (!priv->devdata)
|
||||
return -EINVAL;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
base = devm_ioremap_resource(dev, res);
|
||||
if (IS_ERR(base))
|
||||
return PTR_ERR(base);
|
||||
|
||||
priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
|
||||
&mixel_dphy_regmap_config);
|
||||
if (IS_ERR(priv->regmap)) {
|
||||
dev_err(dev, "Couldn't create the DPHY regmap\n");
|
||||
return PTR_ERR(priv->regmap);
|
||||
}
|
||||
|
||||
priv->phy_ref_clk = devm_clk_get(&pdev->dev, "phy_ref");
|
||||
if (IS_ERR(priv->phy_ref_clk)) {
|
||||
dev_err(dev, "No phy_ref clock found\n");
|
||||
return PTR_ERR(priv->phy_ref_clk);
|
||||
}
|
||||
dev_dbg(dev, "phy_ref clock rate: %lu\n",
|
||||
clk_get_rate(priv->phy_ref_clk));
|
||||
|
||||
dev_set_drvdata(dev, priv);
|
||||
|
||||
phy = devm_phy_create(dev, np, &mixel_dphy_phy_ops);
|
||||
if (IS_ERR(phy)) {
|
||||
dev_err(dev, "Failed to create phy %ld\n", PTR_ERR(phy));
|
||||
return PTR_ERR(phy);
|
||||
}
|
||||
phy_set_drvdata(phy, priv);
|
||||
|
||||
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
|
||||
|
||||
return PTR_ERR_OR_ZERO(phy_provider);
|
||||
}
|
||||
|
||||
static struct platform_driver mixel_dphy_driver = {
|
||||
.probe = mixel_dphy_probe,
|
||||
.driver = {
|
||||
.name = "mixel-mipi-dphy",
|
||||
.of_match_table = mixel_dphy_of_match,
|
||||
}
|
||||
};
|
||||
module_platform_driver(mixel_dphy_driver);
|
||||
|
||||
MODULE_AUTHOR("NXP Semiconductor");
|
||||
MODULE_DESCRIPTION("Mixel MIPI-DSI PHY driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -25,6 +25,14 @@ config PHY_QCOM_IPQ806X_SATA
|
|||
depends on OF
|
||||
select GENERIC_PHY
|
||||
|
||||
config PHY_QCOM_PCIE2
|
||||
tristate "Qualcomm PCIe Gen2 PHY Driver"
|
||||
depends on OF && COMMON_CLK && (ARCH_QCOM || COMPILE_TEST)
|
||||
select GENERIC_PHY
|
||||
help
|
||||
Enable this to support the Qualcomm PCIe PHY, used with the Synopsys
|
||||
based PCIe controller.
|
||||
|
||||
config PHY_QCOM_QMP
|
||||
tristate "Qualcomm QMP PHY Driver"
|
||||
depends on OF && COMMON_CLK && (ARCH_QCOM || COMPILE_TEST)
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
obj-$(CONFIG_PHY_ATH79_USB) += phy-ath79-usb.o
|
||||
obj-$(CONFIG_PHY_QCOM_APQ8064_SATA) += phy-qcom-apq8064-sata.o
|
||||
obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o
|
||||
obj-$(CONFIG_PHY_QCOM_PCIE2) += phy-qcom-pcie2.o
|
||||
obj-$(CONFIG_PHY_QCOM_QMP) += phy-qcom-qmp.o
|
||||
obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o
|
||||
obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,331 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
|
||||
* Copyright (c) 2019, Linaro Ltd.
|
||||
*/
|
||||
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/iopoll.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/phy/phy.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/reset.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
#include <dt-bindings/phy/phy.h>
|
||||
|
||||
#define PCIE20_PARF_PHY_STTS 0x3c
|
||||
#define PCIE2_PHY_RESET_CTRL 0x44
|
||||
#define PCIE20_PARF_PHY_REFCLK_CTRL2 0xa0
|
||||
#define PCIE20_PARF_PHY_REFCLK_CTRL3 0xa4
|
||||
#define PCIE20_PARF_PCS_SWING_CTRL1 0x88
|
||||
#define PCIE20_PARF_PCS_SWING_CTRL2 0x8c
|
||||
#define PCIE20_PARF_PCS_DEEMPH1 0x74
|
||||
#define PCIE20_PARF_PCS_DEEMPH2 0x78
|
||||
#define PCIE20_PARF_PCS_DEEMPH3 0x7c
|
||||
#define PCIE20_PARF_CONFIGBITS 0x84
|
||||
#define PCIE20_PARF_PHY_CTRL3 0x94
|
||||
#define PCIE20_PARF_PCS_CTRL 0x80
|
||||
|
||||
#define TX_AMP_VAL 120
|
||||
#define PHY_RX0_EQ_GEN1_VAL 0
|
||||
#define PHY_RX0_EQ_GEN2_VAL 4
|
||||
#define TX_DEEMPH_GEN1_VAL 24
|
||||
#define TX_DEEMPH_GEN2_3_5DB_VAL 26
|
||||
#define TX_DEEMPH_GEN2_6DB_VAL 36
|
||||
#define PHY_TX0_TERM_OFFST_VAL 0
|
||||
|
||||
struct qcom_phy {
|
||||
struct device *dev;
|
||||
void __iomem *base;
|
||||
|
||||
struct regulator_bulk_data vregs[2];
|
||||
|
||||
struct reset_control *phy_reset;
|
||||
struct reset_control *pipe_reset;
|
||||
struct clk *pipe_clk;
|
||||
};
|
||||
|
||||
static int qcom_pcie2_phy_init(struct phy *phy)
|
||||
{
|
||||
struct qcom_phy *qphy = phy_get_drvdata(phy);
|
||||
int ret;
|
||||
|
||||
ret = reset_control_deassert(qphy->phy_reset);
|
||||
if (ret) {
|
||||
dev_err(qphy->dev, "cannot deassert pipe reset\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = regulator_bulk_enable(ARRAY_SIZE(qphy->vregs), qphy->vregs);
|
||||
if (ret)
|
||||
reset_control_assert(qphy->phy_reset);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int qcom_pcie2_phy_power_on(struct phy *phy)
|
||||
{
|
||||
struct qcom_phy *qphy = phy_get_drvdata(phy);
|
||||
int ret;
|
||||
u32 val;
|
||||
|
||||
/* Program REF_CLK source */
|
||||
val = readl(qphy->base + PCIE20_PARF_PHY_REFCLK_CTRL2);
|
||||
val &= ~BIT(1);
|
||||
writel(val, qphy->base + PCIE20_PARF_PHY_REFCLK_CTRL2);
|
||||
|
||||
usleep_range(1000, 2000);
|
||||
|
||||
/* Don't use PAD for refclock */
|
||||
val = readl(qphy->base + PCIE20_PARF_PHY_REFCLK_CTRL2);
|
||||
val &= ~BIT(0);
|
||||
writel(val, qphy->base + PCIE20_PARF_PHY_REFCLK_CTRL2);
|
||||
|
||||
/* Program SSP ENABLE */
|
||||
val = readl(qphy->base + PCIE20_PARF_PHY_REFCLK_CTRL3);
|
||||
val |= BIT(0);
|
||||
writel(val, qphy->base + PCIE20_PARF_PHY_REFCLK_CTRL3);
|
||||
|
||||
usleep_range(1000, 2000);
|
||||
|
||||
/* Assert Phy SW Reset */
|
||||
val = readl(qphy->base + PCIE2_PHY_RESET_CTRL);
|
||||
val |= BIT(0);
|
||||
writel(val, qphy->base + PCIE2_PHY_RESET_CTRL);
|
||||
|
||||
/* Program Tx Amplitude */
|
||||
val = readl(qphy->base + PCIE20_PARF_PCS_SWING_CTRL1);
|
||||
val &= ~0x7f;
|
||||
val |= TX_AMP_VAL;
|
||||
writel(val, qphy->base + PCIE20_PARF_PCS_SWING_CTRL1);
|
||||
|
||||
val = readl(qphy->base + PCIE20_PARF_PCS_SWING_CTRL2);
|
||||
val &= ~0x7f;
|
||||
val |= TX_AMP_VAL;
|
||||
writel(val, qphy->base + PCIE20_PARF_PCS_SWING_CTRL2);
|
||||
|
||||
/* Program De-Emphasis */
|
||||
val = readl(qphy->base + PCIE20_PARF_PCS_DEEMPH1);
|
||||
val &= ~0x3f;
|
||||
val |= TX_DEEMPH_GEN2_6DB_VAL;
|
||||
writel(val, qphy->base + PCIE20_PARF_PCS_DEEMPH1);
|
||||
|
||||
val = readl(qphy->base + PCIE20_PARF_PCS_DEEMPH2);
|
||||
val &= ~0x3f;
|
||||
val |= TX_DEEMPH_GEN2_3_5DB_VAL;
|
||||
writel(val, qphy->base + PCIE20_PARF_PCS_DEEMPH2);
|
||||
|
||||
val = readl(qphy->base + PCIE20_PARF_PCS_DEEMPH3);
|
||||
val &= ~0x3f;
|
||||
val |= TX_DEEMPH_GEN1_VAL;
|
||||
writel(val, qphy->base + PCIE20_PARF_PCS_DEEMPH3);
|
||||
|
||||
/* Program Rx_Eq */
|
||||
val = readl(qphy->base + PCIE20_PARF_CONFIGBITS);
|
||||
val &= ~0x7;
|
||||
val |= PHY_RX0_EQ_GEN2_VAL;
|
||||
writel(val, qphy->base + PCIE20_PARF_CONFIGBITS);
|
||||
|
||||
/* Program Tx0_term_offset */
|
||||
val = readl(qphy->base + PCIE20_PARF_PHY_CTRL3);
|
||||
val &= ~0x1f;
|
||||
val |= PHY_TX0_TERM_OFFST_VAL;
|
||||
writel(val, qphy->base + PCIE20_PARF_PHY_CTRL3);
|
||||
|
||||
/* disable Tx2Rx Loopback */
|
||||
val = readl(qphy->base + PCIE20_PARF_PCS_CTRL);
|
||||
val &= ~BIT(1);
|
||||
writel(val, qphy->base + PCIE20_PARF_PCS_CTRL);
|
||||
|
||||
/* De-assert Phy SW Reset */
|
||||
val = readl(qphy->base + PCIE2_PHY_RESET_CTRL);
|
||||
val &= ~BIT(0);
|
||||
writel(val, qphy->base + PCIE2_PHY_RESET_CTRL);
|
||||
|
||||
usleep_range(1000, 2000);
|
||||
|
||||
ret = reset_control_deassert(qphy->pipe_reset);
|
||||
if (ret) {
|
||||
dev_err(qphy->dev, "cannot deassert pipe reset\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
clk_set_rate(qphy->pipe_clk, 250000000);
|
||||
|
||||
ret = clk_prepare_enable(qphy->pipe_clk);
|
||||
if (ret) {
|
||||
dev_err(qphy->dev, "failed to enable pipe clock\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = readl_poll_timeout(qphy->base + PCIE20_PARF_PHY_STTS, val,
|
||||
!(val & BIT(0)), 1000, 10);
|
||||
if (ret)
|
||||
dev_err(qphy->dev, "phy initialization failed\n");
|
||||
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int qcom_pcie2_phy_power_off(struct phy *phy)
|
||||
{
|
||||
struct qcom_phy *qphy = phy_get_drvdata(phy);
|
||||
u32 val;
|
||||
|
||||
val = readl(qphy->base + PCIE2_PHY_RESET_CTRL);
|
||||
val |= BIT(0);
|
||||
writel(val, qphy->base + PCIE2_PHY_RESET_CTRL);
|
||||
|
||||
clk_disable_unprepare(qphy->pipe_clk);
|
||||
reset_control_assert(qphy->pipe_reset);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int qcom_pcie2_phy_exit(struct phy *phy)
|
||||
{
|
||||
struct qcom_phy *qphy = phy_get_drvdata(phy);
|
||||
|
||||
regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs);
|
||||
reset_control_assert(qphy->phy_reset);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct phy_ops qcom_pcie2_ops = {
|
||||
.init = qcom_pcie2_phy_init,
|
||||
.power_on = qcom_pcie2_phy_power_on,
|
||||
.power_off = qcom_pcie2_phy_power_off,
|
||||
.exit = qcom_pcie2_phy_exit,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
/*
|
||||
* Register a fixed rate pipe clock.
|
||||
*
|
||||
* The <s>_pipe_clksrc generated by PHY goes to the GCC that gate
|
||||
* controls it. The <s>_pipe_clk coming out of the GCC is requested
|
||||
* by the PHY driver for its operations.
|
||||
* We register the <s>_pipe_clksrc here. The gcc driver takes care
|
||||
* of assigning this <s>_pipe_clksrc as parent to <s>_pipe_clk.
|
||||
* Below picture shows this relationship.
|
||||
*
|
||||
* +---------------+
|
||||
* | PHY block |<<---------------------------------------+
|
||||
* | | |
|
||||
* | +-------+ | +-----+ |
|
||||
* I/P---^-->| PLL |---^--->pipe_clksrc--->| GCC |--->pipe_clk---+
|
||||
* clk | +-------+ | +-----+
|
||||
* +---------------+
|
||||
*/
|
||||
static int phy_pipe_clksrc_register(struct qcom_phy *qphy)
|
||||
{
|
||||
struct device_node *np = qphy->dev->of_node;
|
||||
struct clk_fixed_rate *fixed;
|
||||
struct clk_init_data init = { };
|
||||
int ret;
|
||||
|
||||
ret = of_property_read_string(np, "clock-output-names", &init.name);
|
||||
if (ret) {
|
||||
dev_err(qphy->dev, "%s: No clock-output-names\n", np->name);
|
||||
return ret;
|
||||
}
|
||||
|
||||
fixed = devm_kzalloc(qphy->dev, sizeof(*fixed), GFP_KERNEL);
|
||||
if (!fixed)
|
||||
return -ENOMEM;
|
||||
|
||||
init.ops = &clk_fixed_rate_ops;
|
||||
|
||||
/* controllers using QMP phys use 250MHz pipe clock interface */
|
||||
fixed->fixed_rate = 250000000;
|
||||
fixed->hw.init = &init;
|
||||
|
||||
return devm_clk_hw_register(qphy->dev, &fixed->hw);
|
||||
}
|
||||
|
||||
static int qcom_pcie2_phy_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct phy_provider *phy_provider;
|
||||
struct qcom_phy *qphy;
|
||||
struct resource *res;
|
||||
struct device *dev = &pdev->dev;
|
||||
struct phy *phy;
|
||||
int ret;
|
||||
|
||||
qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
|
||||
if (!qphy)
|
||||
return -ENOMEM;
|
||||
|
||||
qphy->dev = dev;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
qphy->base = devm_ioremap_resource(dev, res);
|
||||
if (IS_ERR(qphy->base))
|
||||
return PTR_ERR(qphy->base);
|
||||
|
||||
ret = phy_pipe_clksrc_register(qphy);
|
||||
if (ret) {
|
||||
dev_err(dev, "failed to register pipe_clk\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
qphy->vregs[0].supply = "vdda-vp";
|
||||
qphy->vregs[1].supply = "vdda-vph";
|
||||
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(qphy->vregs), qphy->vregs);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
qphy->pipe_clk = devm_clk_get(dev, NULL);
|
||||
if (IS_ERR(qphy->pipe_clk)) {
|
||||
dev_err(dev, "failed to acquire pipe clock\n");
|
||||
return PTR_ERR(qphy->pipe_clk);
|
||||
}
|
||||
|
||||
qphy->phy_reset = devm_reset_control_get_exclusive(dev, "phy");
|
||||
if (IS_ERR(qphy->phy_reset)) {
|
||||
dev_err(dev, "failed to acquire phy reset\n");
|
||||
return PTR_ERR(qphy->phy_reset);
|
||||
}
|
||||
|
||||
qphy->pipe_reset = devm_reset_control_get_exclusive(dev, "pipe");
|
||||
if (IS_ERR(qphy->pipe_reset)) {
|
||||
dev_err(dev, "failed to acquire pipe reset\n");
|
||||
return PTR_ERR(qphy->pipe_reset);
|
||||
}
|
||||
|
||||
phy = devm_phy_create(dev, dev->of_node, &qcom_pcie2_ops);
|
||||
if (IS_ERR(phy)) {
|
||||
dev_err(dev, "failed to create phy\n");
|
||||
return PTR_ERR(phy);
|
||||
}
|
||||
|
||||
phy_set_drvdata(phy, qphy);
|
||||
|
||||
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
|
||||
if (IS_ERR(phy_provider))
|
||||
dev_err(dev, "failed to register phy provider\n");
|
||||
|
||||
return PTR_ERR_OR_ZERO(phy_provider);
|
||||
}
|
||||
|
||||
static const struct of_device_id qcom_pcie2_phy_match_table[] = {
|
||||
{ .compatible = "qcom,pcie2-phy" },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, qcom_pcie2_phy_match_table);
|
||||
|
||||
static struct platform_driver qcom_pcie2_phy_driver = {
|
||||
.probe = qcom_pcie2_phy_probe,
|
||||
.driver = {
|
||||
.name = "phy-qcom-pcie2",
|
||||
.of_match_table = qcom_pcie2_phy_match_table,
|
||||
},
|
||||
};
|
||||
|
||||
module_platform_driver(qcom_pcie2_phy_driver);
|
||||
|
||||
MODULE_DESCRIPTION("Qualcomm PCIe PHY driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -1074,6 +1074,7 @@ static const struct qmp_phy_cfg msm8996_pciephy_cfg = {
|
|||
|
||||
.start_ctrl = PCS_START | PLL_READY_GATE_EN,
|
||||
.pwrdn_ctrl = SW_PWRDN | REFCLK_DRV_DSBL,
|
||||
.mask_pcs_ready = PHYSTATUS,
|
||||
.mask_com_pcs_ready = PCS_READY,
|
||||
|
||||
.has_phy_com_ctrl = true,
|
||||
|
|
@ -1253,7 +1254,7 @@ static const struct qmp_phy_cfg msm8998_pciephy_cfg = {
|
|||
|
||||
.start_ctrl = SERDES_START | PCS_START,
|
||||
.pwrdn_ctrl = SW_PWRDN | REFCLK_DRV_DSBL,
|
||||
.mask_com_pcs_ready = PCS_READY,
|
||||
.mask_pcs_ready = PHYSTATUS,
|
||||
};
|
||||
|
||||
static const struct qmp_phy_cfg msm8998_usb3phy_cfg = {
|
||||
|
|
@ -1547,7 +1548,7 @@ static int qcom_qmp_phy_enable(struct phy *phy)
|
|||
status = pcs + cfg->regs[QPHY_PCS_READY_STATUS];
|
||||
mask = cfg->mask_pcs_ready;
|
||||
|
||||
ret = readl_poll_timeout(status, val, !(val & mask), 1,
|
||||
ret = readl_poll_timeout(status, val, val & mask, 10,
|
||||
PHY_INIT_COMPLETE_TIMEOUT);
|
||||
if (ret) {
|
||||
dev_err(qmp->dev, "phy initialization timed-out\n");
|
||||
|
|
|
|||
|
|
@ -13,6 +13,7 @@
|
|||
#include <linux/interrupt.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/of_device.h>
|
||||
|
|
@ -106,6 +107,7 @@ struct rcar_gen3_chan {
|
|||
struct rcar_gen3_phy rphys[NUM_OF_PHYS];
|
||||
struct regulator *vbus;
|
||||
struct work_struct work;
|
||||
struct mutex lock; /* protects rphys[...].powered */
|
||||
enum usb_dr_mode dr_mode;
|
||||
bool extcon_host;
|
||||
bool is_otg_channel;
|
||||
|
|
@ -437,15 +439,16 @@ static int rcar_gen3_phy_usb2_power_on(struct phy *p)
|
|||
struct rcar_gen3_chan *channel = rphy->ch;
|
||||
void __iomem *usb2_base = channel->base;
|
||||
u32 val;
|
||||
int ret;
|
||||
int ret = 0;
|
||||
|
||||
mutex_lock(&channel->lock);
|
||||
if (!rcar_gen3_are_all_rphys_power_off(channel))
|
||||
return 0;
|
||||
goto out;
|
||||
|
||||
if (channel->vbus) {
|
||||
ret = regulator_enable(channel->vbus);
|
||||
if (ret)
|
||||
return ret;
|
||||
goto out;
|
||||
}
|
||||
|
||||
val = readl(usb2_base + USB2_USBCTR);
|
||||
|
|
@ -454,7 +457,10 @@ static int rcar_gen3_phy_usb2_power_on(struct phy *p)
|
|||
val &= ~USB2_USBCTR_PLL_RST;
|
||||
writel(val, usb2_base + USB2_USBCTR);
|
||||
|
||||
out:
|
||||
/* The powered flag should be set for any other phys anyway */
|
||||
rphy->powered = true;
|
||||
mutex_unlock(&channel->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -465,14 +471,18 @@ static int rcar_gen3_phy_usb2_power_off(struct phy *p)
|
|||
struct rcar_gen3_chan *channel = rphy->ch;
|
||||
int ret = 0;
|
||||
|
||||
mutex_lock(&channel->lock);
|
||||
rphy->powered = false;
|
||||
|
||||
if (!rcar_gen3_are_all_rphys_power_off(channel))
|
||||
return 0;
|
||||
goto out;
|
||||
|
||||
if (channel->vbus)
|
||||
ret = regulator_disable(channel->vbus);
|
||||
|
||||
out:
|
||||
mutex_unlock(&channel->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
@ -639,6 +649,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
|
|||
if (!phy_usb2_ops)
|
||||
return -EINVAL;
|
||||
|
||||
mutex_init(&channel->lock);
|
||||
for (i = 0; i < NUM_OF_PHYS; i++) {
|
||||
channel->rphys[i].phy = devm_phy_create(dev, NULL,
|
||||
phy_usb2_ops);
|
||||
|
|
|
|||
|
|
@ -156,9 +156,8 @@ static int samsung_usb2_phy_probe(struct platform_device *pdev)
|
|||
if (!cfg)
|
||||
return -EINVAL;
|
||||
|
||||
drv = devm_kzalloc(dev, sizeof(struct samsung_usb2_phy_driver) +
|
||||
cfg->num_phys * sizeof(struct samsung_usb2_phy_instance),
|
||||
GFP_KERNEL);
|
||||
drv = devm_kzalloc(dev, struct_size(drv, instances, cfg->num_phys),
|
||||
GFP_KERNEL);
|
||||
if (!drv)
|
||||
return -ENOMEM;
|
||||
|
||||
|
|
|
|||
|
|
@ -247,8 +247,8 @@ static void serdes_am654_release(struct phy *x)
|
|||
mux_control_deselect(phy->control);
|
||||
}
|
||||
|
||||
struct phy *serdes_am654_xlate(struct device *dev, struct of_phandle_args
|
||||
*args)
|
||||
static struct phy *serdes_am654_xlate(struct device *dev,
|
||||
struct of_phandle_args *args)
|
||||
{
|
||||
struct serdes_am654 *am654_phy;
|
||||
struct phy *phy;
|
||||
|
|
|
|||
Loading…
Reference in New Issue