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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>
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@ -19,12 +19,19 @@
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#include "internal.h"
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const char *const regulator_states[PM_SUSPEND_MAX + 1] = {
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[PM_SUSPEND_MEM] = "regulator-state-mem",
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[PM_SUSPEND_MAX] = "regulator-state-disk",
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};
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static void of_get_regulation_constraints(struct device_node *np,
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struct regulator_init_data **init_data)
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{
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const __be32 *min_uV, *max_uV;
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struct regulation_constraints *constraints = &(*init_data)->constraints;
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int ret;
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struct regulator_state *suspend_state;
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struct device_node *suspend_np;
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int ret, i;
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u32 pval;
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constraints->name = of_get_property(np, "regulator-name", NULL);
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@ -73,6 +80,36 @@ static void of_get_regulation_constraints(struct device_node *np,
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ret = of_property_read_u32(np, "regulator-enable-ramp-delay", &pval);
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if (!ret)
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constraints->enable_time = pval;
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for (i = 0; i < ARRAY_SIZE(regulator_states); i++) {
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switch (i) {
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case PM_SUSPEND_MEM:
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suspend_state = &constraints->state_mem;
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break;
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case PM_SUSPEND_MAX:
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suspend_state = &constraints->state_disk;
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break;
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case PM_SUSPEND_ON:
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case PM_SUSPEND_FREEZE:
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case PM_SUSPEND_STANDBY:
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default:
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continue;
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};
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suspend_np = of_get_child_by_name(np, regulator_states[i]);
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if (!suspend_np || !suspend_state)
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continue;
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if (of_property_read_bool(suspend_np,
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"regulator-on-in-suspend"))
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suspend_state->enabled = true;
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else if (of_property_read_bool(suspend_np,
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"regulator-off-in-suspend"))
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suspend_state->disabled = true;
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suspend_state = NULL;
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suspend_np = NULL;
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}
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}
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/**
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