diff options
Diffstat (limited to 'drivers/input/misc/max8925_onkey.c')
| -rw-r--r-- | drivers/input/misc/max8925_onkey.c | 115 |
1 files changed, 73 insertions, 42 deletions
diff --git a/drivers/input/misc/max8925_onkey.c b/drivers/input/misc/max8925_onkey.c index 23cf08271049..0a12b74140d3 100644 --- a/drivers/input/misc/max8925_onkey.c +++ b/drivers/input/misc/max8925_onkey.c @@ -1,5 +1,5 @@ /** - * max8925_onkey.c - MAX8925 ONKEY driver + * MAX8925 ONKEY driver * * Copyright (C) 2009 Marvell International Ltd. * Haojian Zhuang <haojian.zhuang@marvell.com> @@ -35,7 +35,7 @@ struct max8925_onkey_info { struct input_dev *idev; struct i2c_client *i2c; struct device *dev; - int irq[2]; + unsigned int irq[2]; }; /* @@ -46,17 +46,14 @@ struct max8925_onkey_info { static irqreturn_t max8925_onkey_handler(int irq, void *data) { struct max8925_onkey_info *info = data; - int ret, event; - - 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); + int state; + + state = max8925_reg_read(info->i2c, MAX8925_ON_OFF_STATUS); + + input_report_key(info->idev, KEY_POWER, state & SW_INPUT); input_sync(info->idev); - dev_dbg(info->dev, "onkey event:%d\n", event); + dev_dbg(info->dev, "onkey state:%d\n", state); /* Enable hardreset to halt if system isn't shutdown on time */ max8925_set_bits(info->i2c, MAX8925_SYSENSEL, @@ -69,6 +66,7 @@ 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; + struct input_dev *input; int irq[2], error; irq[0] = platform_get_irq(pdev, 0); @@ -76,6 +74,7 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev) 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"); @@ -83,11 +82,24 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev) } info = kzalloc(sizeof(struct max8925_onkey_info), GFP_KERNEL); - if (!info) - return -ENOMEM; + input = input_allocate_device(); + if (!info || !input) { + error = -ENOMEM; + goto err_free_mem; + } + info->idev = input; info->i2c = chip->i2c; info->dev = &pdev->dev; + info->irq[0] = irq[0]; + info->irq[1] = irq[1]; + + input->name = "max8925_on"; + input->phys = "max8925_on/input0"; + input->id.bustype = BUS_I2C; + input->dev.parent = &pdev->dev; + input_set_capability(input, EV_KEY, KEY_POWER); + irq[0] += chip->irq_base; irq[1] += chip->irq_base; @@ -96,60 +108,46 @@ static int __devinit max8925_onkey_probe(struct platform_device *pdev) if (error < 0) { dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n", irq[0], error); - goto out; + goto err_free_mem; } + 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; + goto err_free_irq0; } - info->idev = input_allocate_device(); - if (!info->idev) { - dev_err(chip->dev, "Failed to allocate input dev\n"); - error = -ENOMEM; - goto out_input; - } - - info->idev->name = "max8925_on"; - 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 = input_register_device(info->idev); if (error) { dev_err(chip->dev, "Can't register input device: %d\n", error); - goto out_reg; + goto err_free_irq1; } platform_set_drvdata(pdev, info); + device_init_wakeup(&pdev->dev, 1); return 0; -out_reg: - input_free_device(info->idev); -out_input: - free_irq(info->irq[1], info); -out_irq: - free_irq(info->irq[0], info); -out: +err_free_irq1: + free_irq(irq[1], info); +err_free_irq0: + free_irq(irq[0], info); +err_free_mem: + input_free_device(input); kfree(info); + return error; } static int __devexit max8925_onkey_remove(struct platform_device *pdev) { struct max8925_onkey_info *info = platform_get_drvdata(pdev); + struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent); - free_irq(info->irq[0], info); - free_irq(info->irq[1], info); + free_irq(info->irq[0] + chip->irq_base, info); + free_irq(info->irq[1] + chip->irq_base, info); input_unregister_device(info->idev); kfree(info); @@ -158,10 +156,43 @@ static int __devexit max8925_onkey_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int max8925_onkey_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct max8925_onkey_info *info = platform_get_drvdata(pdev); + struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent); + + if (device_may_wakeup(dev)) { + chip->wakeup_flag |= 1 << info->irq[0]; + chip->wakeup_flag |= 1 << info->irq[1]; + } + + return 0; +} + +static int max8925_onkey_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct max8925_onkey_info *info = platform_get_drvdata(pdev); + struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent); + + if (device_may_wakeup(dev)) { + chip->wakeup_flag &= ~(1 << info->irq[0]); + chip->wakeup_flag &= ~(1 << info->irq[1]); + } + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(max8925_onkey_pm_ops, max8925_onkey_suspend, max8925_onkey_resume); + static struct platform_driver max8925_onkey_driver = { .driver = { .name = "max8925-onkey", .owner = THIS_MODULE, + .pm = &max8925_onkey_pm_ops, }, .probe = max8925_onkey_probe, .remove = __devexit_p(max8925_onkey_remove), |