Commit 032816fb authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Geert Uytterhoeven
Browse files

pinctrl: pinconf-generic: Add support for "output-impedance-ohms" to be extracted from DT files 



Add "output-impedance-ohms" property to generic options used for DT
parsing files. This enables drivers, which use generic pin configurations,
to get the value passed to this property.

Signed-off-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211027134509.5036-3-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 7388fa8a

drivers/pinctrl/pinconf-generic.c

+2 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ static const struct pin_config_item conf_items[] = { 
	PCONFDUMP(PIN_CONFIG_MODE_LOW_POWER, "pin low power", "mode", true),

	PCONFDUMP(PIN_CONFIG_OUTPUT_ENABLE, "output enabled", NULL, false),

	PCONFDUMP(PIN_CONFIG_OUTPUT, "pin output", "level", true),

	PCONFDUMP(PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS, "output impedance", "ohms", true),

	PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector", true),

	PCONFDUMP(PIN_CONFIG_SLEEP_HARDWARE_STATE, "sleep hardware state", NULL, false),

	PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true),
@@ -179,6 +180,7 @@ static const struct pinconf_generic_params dt_params[] = { 
	{ "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 },

	{ "output-enable", PIN_CONFIG_OUTPUT_ENABLE, 1 },

	{ "output-high", PIN_CONFIG_OUTPUT, 1, },

	{ "output-impedance-ohms", PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS, 0 },

	{ "output-low", PIN_CONFIG_OUTPUT, 0, },

	{ "power-source", PIN_CONFIG_POWER_SOURCE, 0 },

	{ "sleep-hardware-state", PIN_CONFIG_SLEEP_HARDWARE_STATE, 0 },

include/linux/pinctrl/pinconf-generic.h

+3 −0
Original line number Diff line number Diff line
@@ -91,6 +91,8 @@ struct pinctrl_map; 
 * 	configuration (eg. the currently selected mux function) drive values on

 * 	the line. Use argument 1 to enable output mode, argument 0 to disable

 * 	it.

 * @PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: this will configure the output impedance

 * 	of the pin with the value passed as argument. The argument is in ohms.

 * @PIN_CONFIG_PERSIST_STATE: retain pin state across sleep or controller reset

 * @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power

 *	supplies, the argument to this parameter (on a custom format) tells
@@ -129,6 +131,7 @@ enum pin_config_param { 
	PIN_CONFIG_MODE_PWM,

	PIN_CONFIG_OUTPUT,

	PIN_CONFIG_OUTPUT_ENABLE,

	PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS,

	PIN_CONFIG_PERSIST_STATE,

	PIN_CONFIG_POWER_SOURCE,

	PIN_CONFIG_SKEW_DELAY,