starfive-tech/u-boot.git/include/dm/pinctrl.h, branch rtthread_AMP

cmd: pinmux: update result of do_status

2021-07-23T11:13:25+00:00

Update the result of do_status and always returns a CMD_RET_ value (-ENOSYS was a possible result of show_pinmux). This patch also adds pincontrol name in error messages (dev->name) and treats correctly the status sub command when pin-controller device is not selected. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

pinctrl: Reformat documentation in dm/pinctrl.h

2020-10-08T15:42:36+00:00

This normalizes the documentation to conform to kernel-doc style [1]. It also moves the documentation for pinctrl_ops inline, and adds argument and return-value documentation. I have kept the usual function style for these comments. I could not find any existing examples of function documentation inside structs. [1] https://www.kernel.org/doc/html/latest/doc-guide/kernel-doc.html Signed-off-by: Sean Anderson Reviewed-by: Simon Glass

pinctrl: Add pinmux property support to pinctrl-generic

2020-10-08T15:42:36+00:00

The pinmux property allows for smaller and more compact device trees, especially when there are many pins which need to be assigned individually. Instead of specifying an array of strings to be parsed as pins and a function property, the pinmux property contains an array of integers representing pinmux groups. A pinmux group consists of the pin identifier and mux settings represented as a single integer or an array of integers. Each individual pin controller driver specifies the exact format of a pinmux group. As specified in the Linux documentation, a pinmux group may be multiple integers long. However, no existing drivers use multi-integer pinmux groups, so I have chosen to omit this feature. This makes the implementation easier, since there is no need to allocate a buffer to do endian conversions. Support for the pinmux property is done differently than in Linux. As far as I can tell, inversion of control is used when implementing support for the pins and groups properties to avoid allocating. This results in some duplication of effort; every property in a config node is parsed once for each pin in that node. This is not such an overhead with pins and groups properties, since having multiple pins in one config node does not occur especially often. However, the semantics of the pinmux property make such a configuration much more appealing. A future patch could parse all config properties at once and store them in an array. This would make it easier to create drivers which do not function solely as callbacks from pinctrl-generic. This commit increases the size of the sandbox build by approximately 48 bytes. However, it also decreases the size of the K210 device tree by 2 KiB from the previous version of this series. The documentation has been updated from the last Linux commit before it was split off into yaml files. Signed-off-by: Sean Anderson Reviewed-by: Simon Glass

pinctrol: dm: remove the function pinctrl_decode_pin_config

2019-11-14T13:09:34+00:00

Remove the pinctrl_decode_pin_config() API, because this function is unused and not compatible with livetree (it uses fdtdec_get_bool instead of ofnode API). Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass

dm: pinctrl: Add driver-strength-microamp property

2019-06-12T09:50:02+00:00

Add drive-strength-microamp property support to allow drive strength in uA Signed-off-by: Guillaume La Roque Tested-by: Neil Armstrong Signed-off-by: Neil Armstrong

pinctrl: gpio: Add callback for configuring pin as GPIO

2019-05-04T17:26:49+00:00

Add callback to configure, and de-configure, pin as a GPIO on the pin controller side. This matches similar functionality in Linux and aims to replace the ad-hoc implementations present in U-Boot. Signed-off-by: Marek Vasut Cc: Alex Kiernan Cc: Christoph Muellner Cc: Eugeniu Rosca Cc: Patrice Chotard Cc: Patrick DELAUNAY Cc: Philipp Tomsich Cc: Simon Glass

dm: pinctrl: Remove obsolete function pinctrl_decode_pin_config_dm().

2019-04-12T02:10:05+00:00

This reverts commit 5ff776889212c080e3d1a33634ac904405ed6845. As noted in the comment, the function pinctrl_decode_pin_config_dm() only served as a temporary solution. Since the function has no users anymore, we can remove it again. Signed-off-by: Christoph Muellner Reviewed-by: Simon Glass

dm: pinctrl: Add pinctrl_decode_pin_config_dm().

2019-01-02T21:38:44+00:00

pinctrl_decode_pin_config_dm() is basically a feature-equivalent implementation of pinctrl_decode_pin_config(), which operates on struct udevice devices and uses the dev_read_*() API. Signed-off-by: Christoph Muellner Reviewed-by: Philipp Tomsich

cmd: pinmux: Add pinmux command

2018-11-16T21:51:56+00:00

pinmux command allows to : - list all pin-controllers available on platforms - select a pin-controller - display the muxing of all pins of the current pin-controller or all pin-controllers depending of given options Signed-off-by: Patrice Chotard cmd: pinmux: Fix pinmux command if "pinmux status" command is used without having set dev using "pinmux dev", print pinmux usage Reviewed-by: Simon Glass

dm: pinctrl: Add pinctrl_get_pin_name and pinctrl_get_pins_count

2018-11-16T21:51:55+00:00

Add pinctrl_get_pin_name() and pinctrl_get_pins_count() methods to obtain pin's name and pin's muxing given a pin reference. This will be used by the new pinmux command. Signed-off-by: Patrice Chotard Reviewed-by: Simon Glass