From f2d347ff70be453e861304448cb2f32ff94d40e9 Mon Sep 17 00:00:00 2001 From: Alexander Stein Date: Tue, 25 Nov 2014 11:53:45 -0800 Subject: Input: gpio_keys - add device tree support for interrupt only keys This features already exists for board config setups. Add support for device tree based systems. Signed-off-by: Alexander Stein Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/gpio_keys.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) (limited to 'drivers/input/keyboard/gpio_keys.c') diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index 8c98e97f8e41..ce0d9090bbe9 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -29,6 +29,7 @@ #include #include #include +#include #include struct gpio_button_data { @@ -617,28 +618,33 @@ gpio_keys_get_devtree_pdata(struct device *dev) i = 0; for_each_child_of_node(node, pp) { - int gpio; + int gpio = -1; + int irq; enum of_gpio_flags flags; if (!of_find_property(pp, "gpios", NULL)) { - pdata->nbuttons--; - dev_warn(dev, "Found button without gpios\n"); - continue; - } - - gpio = of_get_gpio_flags(pp, 0, &flags); - if (gpio < 0) { - error = gpio; - if (error != -EPROBE_DEFER) - dev_err(dev, - "Failed to get gpio flags, error: %d\n", - error); - return ERR_PTR(error); + irq = irq_of_parse_and_map(pp, 0); + if (irq == 0) { + pdata->nbuttons--; + dev_warn(dev, "Found button without gpios or irqs\n"); + continue; + } + } else { + gpio = of_get_gpio_flags(pp, 0, &flags); + if (gpio < 0) { + error = gpio; + if (error != -EPROBE_DEFER) + dev_err(dev, + "Failed to get gpio flags, error: %d\n", + error); + return ERR_PTR(error); + } } button = &pdata->buttons[i++]; button->gpio = gpio; + button->irq = irq; button->active_low = flags & OF_GPIO_ACTIVE_LOW; if (of_property_read_u32(pp, "linux,code", &button->code)) { -- cgit v1.2.3-59-g8ed1b From af906faabcf91eb12397d8954f89e289a8b96af5 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Sun, 7 Dec 2014 22:42:45 -0800 Subject: Input: gpio_keys - fix warning regarding uninitialized 'irq' variable Commit f2d347ff70be453e ("Input: gpio_keys - add device tree support for interrupt only keys") caused the following build warning: drivers/input/keyboard/gpio_keys.c: In function 'gpio_keys_probe': drivers/input/keyboard/gpio_keys.c:647:15: warning: 'irq' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/input/keyboard/gpio_keys.c:622:7: note: 'irq' was declared here Move button->irq initialization into proper branch and get rid of the temporary. Reported-by: Olof's autobuilder Reported-by: Fabio Estevam Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/gpio_keys.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/input/keyboard/gpio_keys.c') diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index ce0d9090bbe9..b8b4876ac8d3 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -619,12 +619,11 @@ gpio_keys_get_devtree_pdata(struct device *dev) i = 0; for_each_child_of_node(node, pp) { int gpio = -1; - int irq; enum of_gpio_flags flags; if (!of_find_property(pp, "gpios", NULL)) { - irq = irq_of_parse_and_map(pp, 0); - if (irq == 0) { + button->irq = irq_of_parse_and_map(pp, 0); + if (button->irq == 0) { pdata->nbuttons--; dev_warn(dev, "Found button without gpios or irqs\n"); continue; @@ -644,7 +643,6 @@ gpio_keys_get_devtree_pdata(struct device *dev) button = &pdata->buttons[i++]; button->gpio = gpio; - button->irq = irq; button->active_low = flags & OF_GPIO_ACTIVE_LOW; if (of_property_read_u32(pp, "linux,code", &button->code)) { -- cgit v1.2.3-59-g8ed1b From 1d6a01365fd63fbf7c2709a183e2936728c8efad Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Sat, 13 Dec 2014 11:02:08 -0800 Subject: Input: gpio_keys - fix warning regarding uninitialized 'button' variable Commit af906faabcf91eb1 ("Input: gpio_keys - fix warning regarding uninitialized 'irq' variable") introduced the following build warning: drivers/input/keyboard/gpio_keys.c:625:16: warning: 'button' may be used uninitialized in this function [-Wmaybe-uninitialized] Move the 'button' initialization to a proper location to avoid such warning. Reported-by: Olof's autobuilder Signed-off-by: Fabio Estevam Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/gpio_keys.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/input/keyboard/gpio_keys.c') diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index b8b4876ac8d3..f44f05b70ee0 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -621,9 +621,12 @@ gpio_keys_get_devtree_pdata(struct device *dev) int gpio = -1; enum of_gpio_flags flags; + button = &pdata->buttons[i++]; + if (!of_find_property(pp, "gpios", NULL)) { button->irq = irq_of_parse_and_map(pp, 0); if (button->irq == 0) { + i--; pdata->nbuttons--; dev_warn(dev, "Found button without gpios or irqs\n"); continue; @@ -640,8 +643,6 @@ gpio_keys_get_devtree_pdata(struct device *dev) } } - button = &pdata->buttons[i++]; - button->gpio = gpio; button->active_low = flags & OF_GPIO_ACTIVE_LOW; -- cgit v1.2.3-59-g8ed1b