diff options
Diffstat (limited to 'drivers/button')
| -rw-r--r-- | drivers/button/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/button/button-gpio.c | 9 | ||||
| -rw-r--r-- | drivers/button/button-uclass.c | 22 |
3 files changed, 40 insertions, 2 deletions
diff --git a/drivers/button/Kconfig b/drivers/button/Kconfig index 3918b05ae03..6cae16fcc8b 100644 --- a/drivers/button/Kconfig +++ b/drivers/button/Kconfig @@ -9,6 +9,17 @@ config BUTTON can provide access to board-specific buttons. Use of the device tree for configuration is encouraged. +config BUTTON_REMAP_PHONE_KEYS + bool "Remap phone keys for navigation" + depends on BUTTON + help + Enable remapping of phone keys to navigation keys. This is useful for + devices with phone keys that are not used in U-Boot. The phone keys + are remapped to the following navigation keys: + - Volume up: Up + - Volume down: Down + - Power: Enter + config BUTTON_ADC bool "Button adc" depends on BUTTON diff --git a/drivers/button/button-gpio.c b/drivers/button/button-gpio.c index 43b82d98aeb..31b85c8150e 100644 --- a/drivers/button/button-gpio.c +++ b/drivers/button/button-gpio.c @@ -20,6 +20,9 @@ static enum button_state_t button_gpio_get_state(struct udevice *dev) struct button_gpio_priv *priv = dev_get_priv(dev); int ret; + if (!priv) + return -ENODATA; + if (!dm_gpio_is_valid(&priv->gpio)) return -EREMOTEIO; ret = dm_gpio_get_value(&priv->gpio); @@ -32,6 +35,8 @@ static enum button_state_t button_gpio_get_state(struct udevice *dev) static int button_gpio_get_code(struct udevice *dev) { struct button_gpio_priv *priv = dev_get_priv(dev); + if (!priv) + return -ENODATA; int code = priv->linux_code; if (!code) @@ -51,7 +56,7 @@ static int button_gpio_probe(struct udevice *dev) return 0; ret = gpio_request_by_name(dev, "gpios", 0, &priv->gpio, GPIOD_IS_IN); - if (ret) + if (ret || !dm_gpio_is_valid(&priv->gpio)) return ret; ret = dev_read_u32(dev, "linux,code", &priv->linux_code); @@ -98,6 +103,8 @@ static int button_gpio_bind(struct udevice *parent) return ret; uc_plat = dev_get_uclass_plat(dev); uc_plat->label = label; + debug("Button '%s' bound to driver '%s'\n", label, + dev->driver->name); } return 0; diff --git a/drivers/button/button-uclass.c b/drivers/button/button-uclass.c index cda243389df..729983d5870 100644 --- a/drivers/button/button-uclass.c +++ b/drivers/button/button-uclass.c @@ -10,6 +10,7 @@ #include <button.h> #include <dm.h> #include <dm/uclass-internal.h> +#include <dt-bindings/input/linux-event-codes.h> int button_get_by_label(const char *label, struct udevice **devp) { @@ -37,14 +38,33 @@ enum button_state_t button_get_state(struct udevice *dev) return ops->get_state(dev); } +static int button_remap_phone_keys(int code) +{ + switch (code) { + case KEY_VOLUMEUP: + return KEY_UP; + case KEY_VOLUMEDOWN: + return KEY_DOWN; + case KEY_POWER: + return KEY_ENTER; + default: + return code; + } +} + int button_get_code(struct udevice *dev) { struct button_ops *ops = button_get_ops(dev); + int code; if (!ops->get_code) return -ENOSYS; - return ops->get_code(dev); + code = ops->get_code(dev); + if (CONFIG_IS_ENABLED(BUTTON_REMAP_PHONE_KEYS)) + return button_remap_phone_keys(code); + else + return code; } UCLASS_DRIVER(button) = { |