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

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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: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Chanwoo Choi 2014-10-10 20:35:33 +09:00 committed by Mark Brown
parent f114040e3e
commit 40e20d68bb
1 changed files with 38 additions and 1 deletions
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39
drivers/regulator/of_regulator.c
View file

@ -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;
}
}
/**