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| author | Chanwoo Choi <cw00.choi@samsung.com> | 2014-10-10 13:35:33 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-10-20 13:24:13 +0200 |
| commit | 40e20d68bb3fb1ce2704c886d597918988d3321d (patch) | |
| tree | 7a3cd0364f863068b7f6f76078eebfbea1423596 /drivers/regulator | |
| parent | Linux 3.18-rc1 (diff) | |
| download | linux-40e20d68bb3fb1ce2704c886d597918988d3321d.tar.xz linux-40e20d68bb3fb1ce2704c886d597918988d3321d.zip | |
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: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/of_regulator.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index 7a51814abdc5..b375ffe40df1 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; + } } /** |