redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity
alistair23-linux/arch/arm
History
Geert Uytterhoeven 09d1c7b4ba ARM: shmobile: r8a7740 dtsi: Add missing "gpio-ranges" to gpio node 
If a GPIO driver uses gpiochip_add_pin_range() (which is usually the
case for GPIO/PFC combos), the GPIO hogging mechanism configured from DT
doesn't work:

    requesting hog GPIO lcd0 (chip r8a7740_pfc, offset 176) failed

The actual error code is -517 == -EPROBE_DEFER.

The problem is that PFC+GPIO registration is handled in multiple steps:
  1. pinctrl_register(),
  2. gpiochip_add(),
  3. gpiochip_add_pin_range().

Configuration of the hogs is handled in gpiochip_add():

    gpiochip_add
        of_gpiochip_add
            of_gpiochip_scan_hogs
                gpiod_hog
                    gpiochip_request_own_desc
                        __gpiod_request
                            chip->request
                                pinctrl_request_gpio
                                    pinctrl_get_device_gpio_range

However, at this point the GPIO controller hasn't been added to
pinctrldev_list yet, so the range can't be found, and the operation fails
with -EPROBE_DEFER.

To fix this, add a "gpio-ranges" property to the gpio device node, so
the range is added by of_gpiochip_add_pin_range(), which is called by
of_gpiochip_add() before the call to of_gpiochip_scan_hogs().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2015-08-05 06:39:28 +09:00
..
boot ARM: shmobile: r8a7740 dtsi: Add missing "gpio-ranges" to gpio node 2015-08-05 06:39:28 +09:00
common TTY/Serial driver patches for 4.2-rc1 2015-06-26 15:53:22 -07:00
configs ARM: multi_v7_defconfig: Enable BRCMNAND driver 2015-07-01 13:04:13 -07:00
crypto
firmware
include xen: features and cleanups for 4.2-rc0 2015-07-01 11:53:46 -07:00
kernel Fixup various init.h misuses that are fragile wrt code moving to module.h 2015-07-02 11:07:27 -07:00
kvm Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
lib Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
mach-alpine
mach-asm9260
mach-at91 genalloc: rename dev_get_gen_pool() to gen_pool_get() 2015-06-30 19:45:01 -07:00
mach-axxia
mach-bcm ARM: BCM: Do not select CONFIG_MTD_NAND_BRCMNAND 2015-07-01 13:04:13 -07:00
mach-berlin ARM: SoC: driver updates for v4.2 2015-06-26 11:54:29 -07:00
mach-clps711x
mach-cns3xxx
mach-davinci ARM: SoC cleanups for v4.2 2015-06-26 11:08:27 -07:00
mach-digicolor
mach-dove ARM: dove: fix legacy dove IRQ numbers 2015-06-24 11:05:57 +02:00
mach-ebsa110
mach-efm32
mach-ep93xx ARM: ep93xx: simone: support for SPI-based MMC/SD cards 2015-06-11 14:21:29 -07:00
mach-exynos The changes to the common clock framework for 4.2 are dominated by new 2015-07-01 19:22:00 -07:00
mach-footbridge
mach-gemini ARM: gemini: Fix race in installing GPIO chained IRQ handler 2015-06-18 14:03:08 +02:00
mach-highbank
mach-hisi arm/mach-hisi: remove legacy __CPUINIT section that crept in 2015-06-16 14:12:21 -04:00
mach-imx genalloc: rename dev_get_gen_pool() to gen_pool_get() 2015-06-30 19:45:01 -07:00
mach-integrator ARM: 8365/1: introduce sp804_timer_disable and remove arm_timer.h inclusion 2015-06-02 09:58:18 +01:00
mach-iop13xx ARM: Show proper respect for Heinrich Hertz by using the correct unit for frequency 2015-05-14 16:22:05 +01:00
mach-iop32x
mach-iop33x
mach-ixp4xx ARM: Show proper respect for Heinrich Hertz by using the correct unit for frequency 2015-05-14 16:22:05 +01:00
mach-keystone Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
mach-ks8695 ARM: Show proper respect for Heinrich Hertz by using the correct unit for frequency 2015-05-14 16:22:05 +01:00
mach-lpc18xx ARM: lpc18xx: add basic support for NXP LPC18xx/43xx SoCs 2015-05-15 21:43:56 +02:00
mach-lpc32xx Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-07-01 15:19:35 -07:00
mach-mediatek
mach-meson
mach-mmp
mach-moxart
mach-mv78xx0
mach-mvebu ARM: SoC: late fixes and dependencies 2015-07-02 14:40:49 -07:00
mach-mxs
mach-netx
mach-nomadik
mach-nspire ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource 2015-06-02 09:58:18 +01:00
mach-omap1 ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-omap2 - hwspinlock core DT support from Suman Anna 2015-07-03 14:52:25 -07:00
mach-orion5x
mach-picoxcell
mach-prima2 ARM: v7 setup function should invalidate L1 cache 2015-06-01 11:30:26 +01:00
mach-pxa ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-qcom
mach-realview ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource 2015-06-02 09:58:18 +01:00
mach-rockchip Remove __cpuinit macros and users. 2015-07-02 09:54:14 -07:00
mach-rpc
mach-s3c24xx
mach-s3c64xx
mach-s5pv210
mach-sa1100 Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
mach-shmobile ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-socfpga genalloc: rename dev_get_gen_pool() to gen_pool_get() 2015-06-30 19:45:01 -07:00
mach-spear
mach-sti ARM: STi: Ensure requested STi's SysCfg Controlled IRQs are enabled at boot 2015-05-13 10:42:38 +02:00
mach-stm32 ARM: Add STM32 family machine 2015-05-15 21:43:23 +02:00
mach-sunxi
mach-tegra ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mach-u300
mach-uniphier ARM: uniphier: only select TWD for SMP 2015-05-20 17:21:30 +02:00
mach-ux500 ARM: ux500: delete static resource defines 2015-05-18 15:08:15 +02:00
mach-versatile ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource 2015-06-02 09:58:18 +01:00
mach-vexpress arm: don't use module_init in non-modular mach-vexpress/spc.c code 2015-06-16 14:12:29 -04:00
mach-vt8500
mach-w90x900
mach-zx ARM: zx: fix building with CONFIG_THUMB2_KERNEL 2015-05-22 16:45:54 +02:00
mach-zynq ARM: SoC: platform support for v4.2 2015-06-26 11:34:35 -07:00
mm Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-05-13 14:31:43 -04:00
nwfpe
oprofile
plat-iop
plat-omap ARM: OMAP1: Change interrupt numbering for sparse IRQ 2015-05-20 09:01:21 -07:00
plat-orion
plat-pxa
plat-samsung ARM: SAMSUNG: Constify platform_device_id 2015-06-06 02:18:02 +09:00
plat-versatile
probes
tools
vdso ARM: 8384/1: VDSO: force use of BFD linker 2015-06-06 10:37:12 +01:00
vfp ARM: vfp: Add vfp_disable for problematic platforms 2015-05-20 15:07:00 -07:00
xen xen: Include xen/page.h rather than asm/xen/page.h 2015-06-17 16:14:18 +01:00
Kconfig Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
Kconfig-nommu
Kconfig.debug Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00
Makefile Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2015-06-26 12:20:00 -07:00