mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-30 19:51:31 -04:00
GPIO follow up patch and type change for v3.5 merge window
Primarily device driver additions, features and bug fixes. Not much touching gpio common subsystem support. Should not be scary. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJQx2nHAAoJEEFnBt12D9kBKnIP/0y/0LMUUMVp1LN/UeCyPdq+ rqWdI57a+ToAiGcdSG2INR5fjC8duPP1UOSgQXQFsAdF1qy7vN7ejPqmoAGcVoRW P9O64s8eYQprabx3fSiqAOhav6ZUpxyfri9z/sz8JaTlpJrbiqf1MrxFQ/0oXZa9 KqOFAJvKn+iqWjcpFkmeIvNsFT2lTeURyXhvYWUFig/VVuS335+FZYX0Ic1C69YM tf0Z+a6XO8JnAKgC13GsyJ6ctXA1kg1oKLnLHEekr3Qhkic3MTFKS2dPExzGjnbi NY4ev2SxAq74CFwSJDuhPiPk20FpveHKHLsptFdNpCR9lMG038oRnqAnYyw3gV/w z4GufpIZGK/xemIgHqNHejxS+tcH4Ax1wU++TkmIvsPJDq7uZPX/Gu9/+BMpeKxJ oJJV+mRCKDcjxXcxtrybF9+t8WdVZfW2qSt1K7LRO3eRV2n9Y+20R6iGKXhYxHaj TaQTtXIbc4q5ANg72O+c8htBhy0a2H1O5CtrXwwxBBHHsRachyHT6V9AD+7AKZ6e YElRV+v8dOviuUcj+nbf2riA7KnwtBLYfwdVQzTfbD1Fq8RUvMEjq2XQXYKhrMSw r8gp1sUnFmAVOikJFqVgYN8NyToVEyw1i2LH8skzCUnE0PPi+kT8CtaY+tTMuF3v mBixcMEKKhzsFtYmAqU+ =2XeO -----END PGP SIGNATURE----- Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6 Pull GPIO updates from Grant Likely: "GPIO follow up patch and type change for v3.5 merge window Primarily device driver additions, features and bug fixes. Not much touching gpio common subsystem support. Should not be scary." * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits) gpio: Provide the STMPE GPIO driver with its own IRQ Domain gpio: add TS-5500 DIO blocks support gpio: pcf857x: use client->irq for gpio_to_irq() gpio: stmpe: Add DT support for stmpe gpio gpio: pl061 depends on ARM gpio/pl061: remove old comment gpio: SPEAr: add spi chipselect control driver gpio: gpio-max710x: Support device tree probing gpio: twl4030: Use only TWL4030_MODULE_LED for LED configuration gpio: tegra: read output value when gpio is set in direction_out gpio: pca953x: Add compatible strings to gpio-pca953x driver gpio: pca953x: Register an IRQ domain gpio: mvebu: Set free callback for gpio_chip gpio: tegra: Drop exporting static functions gpio: tegra: Staticize non-exported symbols gpio: tegra: fix suspend/resume apis gpio-pch: Set parent dev for gpio chip gpio: em: Fix build errors GPIO: clps711x: use platform_device_unregister in gpio_clps711x_init() gpio/tc3589x: convert to use the simple irqdomain ...
This commit is contained in:
commit
b0885d01f9
29 changed files with 1522 additions and 243 deletions
18
Documentation/devicetree/bindings/gpio/gpio-stmpe.txt
Normal file
18
Documentation/devicetree/bindings/gpio/gpio-stmpe.txt
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
STMPE gpio
|
||||
----------
|
||||
|
||||
Required properties:
|
||||
- compatible: "st,stmpe-gpio"
|
||||
|
||||
Optional properties:
|
||||
- st,norequest-mask: bitmask specifying which GPIOs should _not_ be requestable
|
||||
due to different usage (e.g. touch, keypad)
|
||||
|
||||
Node name must be stmpe_gpio and should be child node of stmpe node to which it
|
||||
belongs.
|
||||
|
||||
Example:
|
||||
stmpe_gpio {
|
||||
compatible = "st,stmpe-gpio";
|
||||
st,norequest-mask = <0x20>; //gpio 5 can't be used
|
||||
};
|
||||
50
Documentation/devicetree/bindings/gpio/spear_spics.txt
Normal file
50
Documentation/devicetree/bindings/gpio/spear_spics.txt
Normal file
|
|
@ -0,0 +1,50 @@
|
|||
=== ST Microelectronics SPEAr SPI CS Driver ===
|
||||
|
||||
SPEAr platform provides a provision to control chipselects of ARM PL022 Prime
|
||||
Cell spi controller through its system registers, which otherwise remains under
|
||||
PL022 control. If chipselect remain under PL022 control then they would be
|
||||
released as soon as transfer is over and TxFIFO becomes empty. This is not
|
||||
desired by some of the device protocols above spi which expect (multiple)
|
||||
transfers without releasing their chipselects.
|
||||
|
||||
Chipselects can be controlled by software by turning them as GPIOs. SPEAr
|
||||
provides another interface through system registers through which software can
|
||||
directly control each PL022 chipselect. Hence, it is natural for SPEAr to export
|
||||
the control of this interface as gpio.
|
||||
|
||||
Required properties:
|
||||
|
||||
* compatible: should be defined as "st,spear-spics-gpio"
|
||||
* reg: mentioning address range of spics controller
|
||||
* st-spics,peripcfg-reg: peripheral configuration register offset
|
||||
* st-spics,sw-enable-bit: bit offset to enable sw control
|
||||
* st-spics,cs-value-bit: bit offset to drive chipselect low or high
|
||||
* st-spics,cs-enable-mask: chip select number bit mask
|
||||
* st-spics,cs-enable-shift: chip select number program offset
|
||||
* gpio-controller: Marks the device node as gpio controller
|
||||
* #gpio-cells: should be 1 and will mention chip select number
|
||||
|
||||
All the above bit offsets are within peripcfg register.
|
||||
|
||||
Example:
|
||||
-------
|
||||
spics: spics@e0700000{
|
||||
compatible = "st,spear-spics-gpio";
|
||||
reg = <0xe0700000 0x1000>;
|
||||
st-spics,peripcfg-reg = <0x3b0>;
|
||||
st-spics,sw-enable-bit = <12>;
|
||||
st-spics,cs-value-bit = <11>;
|
||||
st-spics,cs-enable-mask = <3>;
|
||||
st-spics,cs-enable-shift = <8>;
|
||||
gpio-controller;
|
||||
#gpio-cells = <2>;
|
||||
};
|
||||
|
||||
|
||||
spi0: spi@e0100000 {
|
||||
status = "okay";
|
||||
num-cs = <3>;
|
||||
cs-gpios = <&gpio1 7 0>, <&spics 0>,
|
||||
<&spics 1>;
|
||||
...
|
||||
}
|
||||
Loading…
Reference in a new issue