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Commit 40e20d68 authored by Chanwoo Choi's avatar Chanwoo Choi Committed by Mark Brown
Browse files

regulator: of: Add support for parsing regulator_state for suspend state 



The regulation_constraints structure includes specific field to support
suspend state for global PMIC SUSPEND/HIBERNATE mode. This patch add support
for parsing regulator_state for suspend state.

Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Acked-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f114040e

drivers/regulator/of_regulator.c

+38 −1
Original line number Diff line number Diff line
@@ -19,12 +19,19 @@ 


#include "internal.h"



const char *const regulator_states[PM_SUSPEND_MAX + 1] = {

	[PM_SUSPEND_MEM]	= "regulator-state-mem",

	[PM_SUSPEND_MAX]	= "regulator-state-disk",

};



static void of_get_regulation_constraints(struct device_node *np,

					struct regulator_init_data **init_data)

{

	const __be32 *min_uV, *max_uV;

	struct regulation_constraints *constraints = &(*init_data)->constraints;

	int ret;

	struct regulator_state *suspend_state;

	struct device_node *suspend_np;

	int ret, i;

	u32 pval;



	constraints->name = of_get_property(np, "regulator-name", NULL);
@@ -73,6 +80,36 @@ static void of_get_regulation_constraints(struct device_node *np, 
	ret = of_property_read_u32(np, "regulator-enable-ramp-delay", &pval);

	if (!ret)

		constraints->enable_time = pval;



	for (i = 0; i < ARRAY_SIZE(regulator_states); i++) {

		switch (i) {

		case PM_SUSPEND_MEM:

			suspend_state = &constraints->state_mem;

			break;

		case PM_SUSPEND_MAX:

			suspend_state = &constraints->state_disk;

			break;

		case PM_SUSPEND_ON:

		case PM_SUSPEND_FREEZE:

		case PM_SUSPEND_STANDBY:

		default:

			continue;

		};



		suspend_np = of_get_child_by_name(np, regulator_states[i]);

		if (!suspend_np || !suspend_state)

			continue;



		if (of_property_read_bool(suspend_np,

					"regulator-on-in-suspend"))

			suspend_state->enabled = true;

		else if (of_property_read_bool(suspend_np,

					"regulator-off-in-suspend"))

			suspend_state->disabled = true;



		suspend_state = NULL;

		suspend_np = NULL;

	}

}



/**