forked from Minki/linux
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
Samuel Ortiz
parent
f5d59fc575
commit
2d95ae3bbf
@ -27,27 +27,37 @@
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#include <linux/mfd/max8925.h>
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#include <linux/slab.h>
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#define SW_INPUT (1 << 7) /* 0/1 -- up/down */
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#define HARDRESET_EN (1 << 7)
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#define PWREN_EN (1 << 7)
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struct max8925_onkey_info {
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struct input_dev *idev;
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struct i2c_client *i2c;
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int irq;
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struct device *dev;
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int irq[2];
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};
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/*
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* MAX8925 gives us an interrupt when ONKEY is held for 3 seconds.
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* MAX8925 gives us an interrupt when ONKEY is pressed or released.
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* max8925_set_bits() operates I2C bus and may sleep. So implement
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* it in thread IRQ handler.
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*/
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static irqreturn_t max8925_onkey_handler(int irq, void *data)
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{
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struct max8925_onkey_info *info = data;
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int ret, event;
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input_report_key(info->idev, KEY_POWER, 1);
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ret = max8925_reg_read(info->i2c, MAX8925_ON_OFF_STATUS);
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if (ret & SW_INPUT)
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event = 1;
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else
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event = 0;
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input_report_key(info->idev, KEY_POWER, event);
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input_sync(info->idev);
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dev_dbg(info->dev, "onkey event:%d\n", event);
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/* Enable hardreset to halt if system isn't shutdown on time */
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max8925_set_bits(info->i2c, MAX8925_SYSENSEL,
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HARDRESET_EN, HARDRESET_EN);
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@ -59,14 +69,42 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev)
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{
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struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
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struct max8925_onkey_info *info;
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int error;
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int irq[2], error;
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irq[0] = platform_get_irq(pdev, 0);
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if (irq[0] < 0) {
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dev_err(&pdev->dev, "No IRQ resource!\n");
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return -EINVAL;
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}
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irq[1] = platform_get_irq(pdev, 1);
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if (irq[1] < 0) {
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dev_err(&pdev->dev, "No IRQ resource!\n");
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return -EINVAL;
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}
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info = kzalloc(sizeof(struct max8925_onkey_info), GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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info->i2c = chip->i2c;
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info->irq = chip->irq_base + MAX8925_IRQ_GPM_SW_3SEC;
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info->dev = &pdev->dev;
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irq[0] += chip->irq_base;
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irq[1] += chip->irq_base;
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error = request_threaded_irq(irq[0], NULL, max8925_onkey_handler,
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IRQF_ONESHOT, "onkey-down", info);
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if (error < 0) {
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dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
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irq[0], error);
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goto out;
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}
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error = request_threaded_irq(irq[1], NULL, max8925_onkey_handler,
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IRQF_ONESHOT, "onkey-up", info);
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if (error < 0) {
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dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
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irq[1], error);
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goto out_irq;
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}
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info->idev = input_allocate_device();
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if (!info->idev) {
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@ -79,32 +117,29 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev)
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info->idev->phys = "max8925_on/input0";
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info->idev->id.bustype = BUS_I2C;
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info->idev->dev.parent = &pdev->dev;
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info->irq[0] = irq[0];
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info->irq[1] = irq[1];
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info->idev->evbit[0] = BIT_MASK(EV_KEY);
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info->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
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error = request_threaded_irq(info->irq, NULL, max8925_onkey_handler,
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IRQF_ONESHOT, "onkey", info);
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if (error < 0) {
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dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
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info->irq, error);
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goto out_irq;
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}
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error = input_register_device(info->idev);
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if (error) {
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dev_err(chip->dev, "Can't register input device: %d\n", error);
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goto out;
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goto out_reg;
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}
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platform_set_drvdata(pdev, info);
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return 0;
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out:
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free_irq(info->irq, info);
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out_irq:
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out_reg:
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input_free_device(info->idev);
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out_input:
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free_irq(info->irq[1], info);
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out_irq:
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free_irq(info->irq[0], info);
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out:
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kfree(info);
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return error;
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}
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@ -113,7 +148,8 @@ static int __devexit max8925_onkey_remove(struct platform_device *pdev)
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{
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struct max8925_onkey_info *info = platform_get_drvdata(pdev);
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free_irq(info->irq, info);
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free_irq(info->irq[0], info);
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free_irq(info->irq[1], info);
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input_unregister_device(info->idev);
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kfree(info);
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@ -93,8 +93,13 @@ static struct mfd_cell rtc_devs[] = {
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static struct resource onkey_resources[] = {
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{
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.name = "max8925-onkey",
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.start = MAX8925_IRQ_GPM_SW_3SEC,
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.end = MAX8925_IRQ_GPM_SW_3SEC,
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.start = MAX8925_IRQ_GPM_SW_R,
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.end = MAX8925_IRQ_GPM_SW_R,
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.flags = IORESOURCE_IRQ,
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}, {
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.name = "max8925-onkey",
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.start = MAX8925_IRQ_GPM_SW_F,
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.end = MAX8925_IRQ_GPM_SW_F,
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.flags = IORESOURCE_IRQ,
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},
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};
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@ -102,7 +107,7 @@ static struct resource onkey_resources[] = {
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static struct mfd_cell onkey_devs[] = {
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{
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.name = "max8925-onkey",
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.num_resources = 1,
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.num_resources = 2,
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.resources = &onkey_resources[0],
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.id = -1,
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},
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