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input: Monitor both onkey up and down event 

Remove original 3-second ONKEY event. Detect ONKEY changing event directly.
So both UP and DOWN event of ONKEY in max8925 are monitered.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Haojian Zhuang 2010-09-08 09:44:35 -04:00 committed by Samuel Ortiz
parent f5d59fc575
commit 2d95ae3bbf
2 changed files with 61 additions and 20 deletions
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70
drivers/input/misc/max8925_onkey.c
View File

@ -27,27 +27,37 @@
#include <linux/mfd/max8925.h>
#include <linux/slab.h>
#define SW_INPUT (1 << 7) /* 0/1 -- up/down */
#define HARDRESET_EN (1 << 7)
#define PWREN_EN (1 << 7)
struct max8925_onkey_info {
struct input_dev *idev;
struct i2c_client *i2c;
int irq;
struct device *dev;
int irq[2];
};
/*
* MAX8925 gives us an interrupt when ONKEY is held for 3 seconds.
* MAX8925 gives us an interrupt when ONKEY is pressed or released.
* max8925_set_bits() operates I2C bus and may sleep. So implement
* it in thread IRQ handler.
*/
static irqreturn_t max8925_onkey_handler(int irq, void *data)
{
struct max8925_onkey_info *info = data;
int ret, event;
input_report_key(info->idev, KEY_POWER, 1);
ret = max8925_reg_read(info->i2c, MAX8925_ON_OFF_STATUS);
if (ret & SW_INPUT)
event = 1;
else
event = 0;
input_report_key(info->idev, KEY_POWER, event);
input_sync(info->idev);
dev_dbg(info->dev, "onkey event:%d\n", event);
/* Enable hardreset to halt if system isn't shutdown on time */
max8925_set_bits(info->i2c, MAX8925_SYSENSEL,
HARDRESET_EN, HARDRESET_EN);
@ -59,14 +69,42 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev)
{
struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
struct max8925_onkey_info *info;
int error;
int irq[2], error;
irq[0] = platform_get_irq(pdev, 0);
if (irq[0] < 0) {
dev_err(&pdev->dev, "No IRQ resource!\n");
return -EINVAL;
}
irq[1] = platform_get_irq(pdev, 1);
if (irq[1] < 0) {
dev_err(&pdev->dev, "No IRQ resource!\n");
return -EINVAL;
}
info = kzalloc(sizeof(struct max8925_onkey_info), GFP_KERNEL);
if (!info)
return -ENOMEM;
info->i2c = chip->i2c;
info->irq = chip->irq_base + MAX8925_IRQ_GPM_SW_3SEC;
info->dev = &pdev->dev;
irq[0] += chip->irq_base;
irq[1] += chip->irq_base;
error = request_threaded_irq(irq[0], NULL, max8925_onkey_handler,
IRQF_ONESHOT, "onkey-down", info);
if (error < 0) {
dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
irq[0], error);
goto out;
}
error = request_threaded_irq(irq[1], NULL, max8925_onkey_handler,
IRQF_ONESHOT, "onkey-up", info);
if (error < 0) {
dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
irq[1], error);
goto out_irq;
}
info->idev = input_allocate_device();
if (!info->idev) {
@ -79,32 +117,29 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev)
info->idev->phys = "max8925_on/input0";
info->idev->id.bustype = BUS_I2C;
info->idev->dev.parent = &pdev->dev;
info->irq[0] = irq[0];
info->irq[1] = irq[1];
info->idev->evbit[0] = BIT_MASK(EV_KEY);
info->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
error = request_threaded_irq(info->irq, NULL, max8925_onkey_handler,
IRQF_ONESHOT, "onkey", info);
if (error < 0) {
dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
info->irq, error);
goto out_irq;
}
error = input_register_device(info->idev);
if (error) {
dev_err(chip->dev, "Can't register input device: %d\n", error);
goto out;
goto out_reg;
}
platform_set_drvdata(pdev, info);
return 0;
out:
free_irq(info->irq, info);
out_irq:
out_reg:
input_free_device(info->idev);
out_input:
free_irq(info->irq[1], info);
out_irq:
free_irq(info->irq[0], info);
out:
kfree(info);
return error;
}
@ -113,7 +148,8 @@ static int __devexit max8925_onkey_remove(struct platform_device *pdev)
{
struct max8925_onkey_info *info = platform_get_drvdata(pdev);
free_irq(info->irq, info);
free_irq(info->irq[0], info);
free_irq(info->irq[1], info);
input_unregister_device(info->idev);
kfree(info);

11
drivers/mfd/max8925-core.c
View File

@ -93,8 +93,13 @@ static struct mfd_cell rtc_devs[] = {
static struct resource onkey_resources[] = {
{
.name = "max8925-onkey",
.start = MAX8925_IRQ_GPM_SW_3SEC,
.end = MAX8925_IRQ_GPM_SW_3SEC,
.start = MAX8925_IRQ_GPM_SW_R,
.end = MAX8925_IRQ_GPM_SW_R,
.flags = IORESOURCE_IRQ,
}, {
.name = "max8925-onkey",
.start = MAX8925_IRQ_GPM_SW_F,
.end = MAX8925_IRQ_GPM_SW_F,
.flags = IORESOURCE_IRQ,
},
};
@ -102,7 +107,7 @@ static struct resource onkey_resources[] = {
static struct mfd_cell onkey_devs[] = {
{
.name = "max8925-onkey",
.num_resources = 1,
.num_resources = 2,
.resources = &onkey_resources[0],
.id = -1,
},