Commit f6919eb4 authored by Stanislav Brabec's avatar Stanislav Brabec Committed by Eric Miao

[ARM] pxa/spitz: add gpio button support (fixes regression)

Updating desc for lid keys and resending patch with proper comments:
Define Spitz buttons as GPIO keys in a way compatible with the old driver:

On/Off: As Suspend EV_PWR key
Raw values of lid sensors SWA and SWB: As EV_SW switches
SWA: Display Down
SWB: Lid Closed
Recommended user space decoding:
SWA==0 & SWB==0: lid opened (landscape mode)
SWA==1 & SWB==0: invalid (or mechanic race condition)
SWA==0 & SWB==1: lid closed with display up (portrait mode or mechanic
                 race condition while closing to display-less mode)
SWA==1 & SWB==1: lid closed with display down (display-less mode)

AK_INT remote trigger is not mapped as input event. Without complete
remote driver and remote pull-up control it has no useful
interpretation.
Signed-off-by: default avatarStanislav Brabec <utx@penguin.cz>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent 0bff2fc3
......@@ -15,6 +15,7 @@
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio_keys.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/mtd/physmap.h>
......@@ -375,6 +376,43 @@ static struct platform_device spitzkbd_device = {
};
static struct gpio_keys_button spitz_gpio_keys[] = {
{
.type = EV_PWR,
.code = KEY_SUSPEND,
.gpio = SPITZ_GPIO_ON_KEY,
.desc = "On/Off",
.wakeup = 1,
},
/* Two buttons detecting the lid state */
{
.type = EV_SW,
.code = 0,
.gpio = SPITZ_GPIO_SWA,
.desc = "Display Down",
},
{
.type = EV_SW,
.code = 1,
.gpio = SPITZ_GPIO_SWB,
.desc = "Lid Closed",
},
};
static struct gpio_keys_platform_data spitz_gpio_keys_platform_data = {
.buttons = spitz_gpio_keys,
.nbuttons = ARRAY_SIZE(spitz_gpio_keys),
};
static struct platform_device spitz_gpio_keys_device = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &spitz_gpio_keys_platform_data,
},
};
/*
* Spitz LEDs
*/
......@@ -689,6 +727,7 @@ static struct platform_device sharpsl_rom_device = {
static struct platform_device *devices[] __initdata = {
&spitzscoop_device,
&spitzkbd_device,
&spitz_gpio_keys_device,
&spitzled_device,
&sharpsl_nand_device,
&sharpsl_rom_device,
......
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