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.

Lad Prabhakar committed 5 years ago

Commit 032816f1 parent 7388fa82 files · +5 −0Browse files

Unified · Split

2 files

drivers/pinctrl/pinconf-generic.c +2 −0
include/linux/pinctrl/pinconf-generic.h +3 −0

drivers/pinctrl/pinconf-generic.c+2−0

@@ -46,6 +46,7 @@ static const struct pin_config_item conf_items[] = { · 45 unmodified lines
46	46	PCONFDUMP(PIN_CONFIG_MODE_LOW_POWER, "pin low power", "mode", true),
47	47	PCONFDUMP(PIN_CONFIG_OUTPUT_ENABLE, "output enabled", NULL, false),
48	48	PCONFDUMP(PIN_CONFIG_OUTPUT, "pin output", "level", true),
	49	+ PCONFDUMP(PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS, "output impedance", "ohms", true),
49	50	PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector", true),
50	51	PCONFDUMP(PIN_CONFIG_SLEEP_HARDWARE_STATE, "sleep hardware state", NULL, false),
51	52	PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true),
@@ -179,6 +180,7 @@ static const struct pinconf_generic_params dt_params[] = { · 127 unmodified lines
179	180	{ "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 },
180	181	{ "output-enable", PIN_CONFIG_OUTPUT_ENABLE, 1 },
181	182	{ "output-high", PIN_CONFIG_OUTPUT, 1, },
	183	+ { "output-impedance-ohms", PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS, 0 },
182	184	{ "output-low", PIN_CONFIG_OUTPUT, 0, },
183	185	{ "power-source", PIN_CONFIG_POWER_SOURCE, 0 },
184	186	{ "sleep-hardware-state", PIN_CONFIG_SLEEP_HARDWARE_STATE, 0 },

include/linux/pinctrl/pinconf-generic.h+3−0

@@ -91,6 +91,8 @@ struct pinctrl_map; · 90 unmodified lines
91	91	* configuration (eg. the currently selected mux function) drive values on
92	92	* the line. Use argument 1 to enable output mode, argument 0 to disable
93	93	* it.
	94	+ * @PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: this will configure the output impedance
	95	+ * of the pin with the value passed as argument. The argument is in ohms.
94	96	* @PIN_CONFIG_PERSIST_STATE: retain pin state across sleep or controller reset
95	97	* @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power
96	98	* supplies, the argument to this parameter (on a custom format) tells
@@ -129,6 +131,7 @@ enum pin_config_param { · 32 unmodified lines
129	131	PIN_CONFIG_MODE_PWM,
130	132	PIN_CONFIG_OUTPUT,
131	133	PIN_CONFIG_OUTPUT_ENABLE,
	134	+ PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS,
132	135	PIN_CONFIG_PERSIST_STATE,
133	136	PIN_CONFIG_POWER_SOURCE,
134	137	PIN_CONFIG_SKEW_DELAY,