From dda19a92f033399641e47db0b75beb01d001146b Mon Sep 17 00:00:00 2001 From: Jonas Aaberg Date: Sat, 24 Nov 2012 00:10:29 -0800 Subject: [PATCH] Input: gpio_keys - disable hardware on suspend Disable hardware if active when suspending if the hw can not wake the system from suspend. [Dmitry Torokhov: use input_dev->users instead of a separate flag] Signed-off-by: Jonas Aaberg Signed-off-by: Philippe Langlais Reviewed-by: Bengt Jonsson Signed-off-by: Lee Jones Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/gpio_keys.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index c7764ca17b8..79435de0caa 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -803,6 +803,7 @@ static int gpio_keys_remove(struct platform_device *pdev) static int gpio_keys_suspend(struct device *dev) { struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev); + struct input_dev *input = ddata->input; int i; if (device_may_wakeup(dev)) { @@ -811,6 +812,11 @@ static int gpio_keys_suspend(struct device *dev) if (bdata->button->wakeup) enable_irq_wake(bdata->irq); } + } else { + mutex_lock(&input->mutex); + if (input->users) + gpio_keys_close(input); + mutex_unlock(&input->mutex); } return 0; @@ -819,16 +825,27 @@ static int gpio_keys_suspend(struct device *dev) static int gpio_keys_resume(struct device *dev) { struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev); + struct input_dev *input = ddata->input; + int error = 0; int i; - for (i = 0; i < ddata->pdata->nbuttons; i++) { - struct gpio_button_data *bdata = &ddata->data[i]; - if (bdata->button->wakeup && device_may_wakeup(dev)) - disable_irq_wake(bdata->irq); + if (device_may_wakeup(dev)) { + for (i = 0; i < ddata->pdata->nbuttons; i++) { + struct gpio_button_data *bdata = &ddata->data[i]; + if (bdata->button->wakeup) + disable_irq_wake(bdata->irq); + } + } else { + mutex_lock(&input->mutex); + if (input->users) + error = gpio_keys_open(input); + mutex_unlock(&input->mutex); } - gpio_keys_report_state(ddata); + if (error) + return error; + gpio_keys_report_state(ddata); return 0; } #endif