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.
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/regulator/of_regulator.c | 39 ++++++++++++++++++++++++++++++++++++++-
1 file changed, 38 insertions(+), 1 deletion(-)
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 7a51814..b375ffe 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -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;
+ }
}
/**
--
1.8.0
--
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