u-boot.git/drivers/gpio, branch v2020.07-rc2

test: pinmux: add pincontrol-gpio for pin configuration

2020-04-17T03:06:54Z

Add a simple pincontrol associated to the sandbox gpio driver, that allows to check pin configuration with the command pinmux. The pinmux test is also updated to test behavior with 2 pincontrols. Example to check LED pin configuration: => pinmux list | Device | Driver | Parent | pinctrl-gpio | sandbox_pinctrl_gpio | root_driver | pinctrl | sandbox_pinctrl | root_driver => pinmux dev pinctrl-gpio => pinmux status a0 : gpio input . a1 : gpio input . a2 : gpio input . a3 : gpio input . a4 : gpio input . a5 : gpio output . a6 : gpio output . ... Reviewed-by: Simon Glass Signed-off-by: Patrick Delaunay

test: dm: update test for pins configuration in gpio

2020-04-17T03:06:54Z

Add tests for new API set_dir_flags and set_dir_flags and associated code in gpio uclass. Test support for new flags GPIO_OPEN_DRAIN, GPIO_OPEN_SOURCE GPIO_PULL_UP and GPIO_PULL_DOWN. Reviewed-by: Simon Glass Signed-off-by: Patrick Delaunay

gpio: sandbox: cleanup binding support

2020-04-17T03:06:54Z

Cleanup binding support, use the generic binding by default (test u-class gpio_xlate_offs_flags function) and add specific binding for added value. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

gpio: add ops to set dir flags

2020-04-17T03:06:54Z

Add the ops for GPIO driver set_dir_flags() to set the dir flags. The user can update the direction and configuration of each GPIO with a only call to dm_gpio_set_dir_flags() or dm_gpio_set_dir() and respecting the configuration provided by device tree (saved in desc->flags). When these optional ops are absent, the gpio uclass use the mandatory ops (direction_output, direction_input, get_value) and desc->flags to manage only the main dir flags: - GPIOD_IS_IN - GPIOD_IS_OUT - GPIOD_IS_OUT_ACTIVE - GPIOD_ACTIVE_LOW Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

gpio: add ops to get dir flags

2020-04-17T03:06:54Z

Add the ops for GPIO driver get_dir_flags(), allows to get dynamically the current gpio configuration; it is used by the API function dm_gpio_get_dir_flags(). When these optional ops are absent, the gpio uclass continues to use the mandatory ops (direction_output, direction_input, get_value) and value of desc->flags to manage only the main dir flags: - GPIOD_IS_IN - GPIOD_IS_OUT - GPIOD_IS_OUT_ACTIVE - GPIOD_ACTIVE_LOW Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

gpio: add support of new GPIO direction flag

2020-04-17T03:06:54Z

This commit manages the new dir flags that can be used in gpio specifiers to indicate the pull-up or pull-down resistor configuration for output gpio (GPIO_PULL_UP, GPIO_PULL_DOWN) or the Open Drain/Open Source configuration for input gpio (GPIO_OPEN_DRAIN, GPIO_OPEN_SOURCE). These flags are already supported in Linux kernel in gpio lib. This patch only parse and save the direction flags in GPIO descriptor (desc->flags), it prepares the introduction of new ops to manage them. The GPIO uclass supports new GPIO flags from device-tree (GPIO_XXX define in include/dt-bindings/gpio/gpio.h) and translate them in the dir flags (GPIOD_XXX): - GPIO_PULL_UP => GPIOD_PULL_UP - GPIO_PULL_DOWN => GPIOD_PULL_DOWN - GPIO_OPEN_DRAIN => GPIOD_OPEN_DRAIN - GPIO_OPEN_SOURCE => GPIOD_OPEN_SOURCE This patch also adds protection in the check_dir_flags function for new invalid configuration of the dir flags. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

gpio: update dir_flags management

2020-04-17T03:06:54Z

Update the flag management in GPIO uclass: the desc->flags is always combined with the requested flags and the GPIO descriptor is updated for further call. Add a function dm_gpio_get_dir_flags to get dynamically the current dir_flags (configuration and value). This patch prepare introduction of the dir flags support with new ops. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

gpio: add helper GPIOD_FLAGS_OUTPUT

2020-04-17T03:06:54Z

Add a macro to provide the GPIO output value according the dir flags content. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

gpio: add function check_dir_flags

2020-04-17T03:06:54Z

Add a dir flags validity check with a new function check_dir_flags. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

gpio: add function _dm_gpio_set_dir_flags

2020-04-17T03:06:54Z

Introduce the function _dm_gpio_set_dir_flags to set dir flags without check if the GPIO is reserved. Separate the reserved check for "set_dir" and "set_dir_flags". This patch is a preliminary step to add new ops. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass