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| author | Simon Glass <sjg@chromium.org> | 2015-01-05 20:05:30 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-01-29 17:09:51 -0700 |
| commit | 5d1c17e9a5803af9c65966e469437735ac29659e (patch) | |
| tree | 44721b910376df83c21fca9df6b3fe78529b2484 /include/asm-generic | |
| parent | 3669e0e759118fed3d371e2427b4b47d3969bfd0 (diff) | |
| download | u-boot-imx-5d1c17e9a5803af9c65966e469437735ac29659e.zip u-boot-imx-5d1c17e9a5803af9c65966e469437735ac29659e.tar.gz u-boot-imx-5d1c17e9a5803af9c65966e469437735ac29659e.tar.bz2 | |
dm: gpio: Mark the old GPIO API deprecated
Add a deprecation notice to each function so that it is more obvious that we
are moving GPIOs to driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/gpio.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 2653415..3b96b82 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -10,6 +10,15 @@ /* * Generic GPIO API for U-Boot * + * -- + * NB: This is deprecated. Please use the driver model functions instead: + * + * - gpio_request_by_name() + * - dm_gpio_get_value() etc. + * + * For now we need a dm_ prefix on some functions to avoid name collision. + * -- + * * GPIOs are numbered from 0 to GPIO_COUNT-1 which value is defined * by the SOC/architecture. * @@ -26,6 +35,7 @@ */ /** + * @deprecated Please use driver model instead * Request a GPIO. This should be called before any of the other functions * are used on this GPIO. * @@ -39,6 +49,7 @@ int gpio_request(unsigned gpio, const char *label); /** + * @deprecated Please use driver model instead * Stop using the GPIO. This function should not alter pin configuration. * * @param gpio GPIO number @@ -47,6 +58,7 @@ int gpio_request(unsigned gpio, const char *label); int gpio_free(unsigned gpio); /** + * @deprecated Please use driver model instead * Make a GPIO an input. * * @param gpio GPIO number @@ -55,6 +67,7 @@ int gpio_free(unsigned gpio); int gpio_direction_input(unsigned gpio); /** + * @deprecated Please use driver model instead * Make a GPIO an output, and set its value. * * @param gpio GPIO number @@ -64,6 +77,7 @@ int gpio_direction_input(unsigned gpio); int gpio_direction_output(unsigned gpio, int value); /** + * @deprecated Please use driver model instead * Get a GPIO's value. This will work whether the GPIO is an input * or an output. * @@ -73,6 +87,7 @@ int gpio_direction_output(unsigned gpio, int value); int gpio_get_value(unsigned gpio); /** + * @deprecated Please use driver model instead * Set an output GPIO's value. The GPIO must already be an output or * this function may have no effect. * @@ -134,6 +149,8 @@ static inline bool dm_gpio_is_valid(struct gpio_desc *desc) * which means this is GPIO bank b, offset 4, currently set to input, current * value 1, [x] means that it is requested and the owner is 'sdmmc_cd' * + * TODO(sjg@chromium.org): This should use struct gpio_desc + * * @dev: Device to check * @offset: Offset of device GPIO to check * @buf: Place to put string @@ -146,6 +163,8 @@ int gpio_get_status(struct udevice *dev, int offset, char *buf, int buffsize); * * Note this returns GPIOF_UNUSED if the GPIO is not requested. * + * TODO(sjg@chromium.org): This should use struct gpio_desc + * * @dev: Device to check * @offset: Offset of device GPIO to check * @namep: If non-NULL, this is set to the nane given when the GPIO @@ -163,6 +182,8 @@ int gpio_get_function(struct udevice *dev, int offset, const char **namep); * Note this does not return GPIOF_UNUSED - it will always return the GPIO * driver's view of a pin function, even if it is not correctly set up. * + * TODO(sjg@chromium.org): This should use struct gpio_desc + * * @dev: Device to check * @offset: Offset of device GPIO to check * @namep: If non-NULL, this is set to the nane given when the GPIO |