From: Joseph Chen <che...@rock-chips.com>
support parse regulator standard property:
regulator-off-in-suspend;
regulator-init-microvolt;
regulator-suspend-microvolt:
regulator_get_suspend_enable
regulator_set_suspend_enable
regulator_get_suspend_value
regulator_set_suspend_value
Signed-off-by: Joseph Chen <che...@rock-chips.com>
Signed-off-by: Elaine Zhang <zhangq...@rock-chips.com>
---
drivers/power/regulator/regulator-uclass.c | 67 ++++++++++++++++++++++++++++++
include/power/regulator.h | 42 +++++++++++++++++++
2 files changed, 109 insertions(+)
diff --git a/drivers/power/regulator/regulator-uclass.c
b/drivers/power/regulator/regulator-uclass.c
index 76be95bcd159..972a5b210c3c 100644
--- a/drivers/power/regulator/regulator-uclass.c
+++ b/drivers/power/regulator/regulator-uclass.c
@@ -77,6 +77,33 @@ int regulator_set_value(struct udevice *dev, int uV)
return ret;
}
+int regulator_set_suspend_value(struct udevice *dev, int uV)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+ struct dm_regulator_uclass_platdata *uc_pdata;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (uc_pdata->min_uV != -ENODATA && uV < uc_pdata->min_uV)
+ return -EINVAL;
+ if (uc_pdata->max_uV != -ENODATA && uV > uc_pdata->max_uV)
+ return -EINVAL;
+
+ if (!ops || !ops->set_suspend_value)
+ return -ENOSYS;
+
+ return ops->set_suspend_value(dev, uV);
+}
+
+int regulator_get_suspend_value(struct udevice *dev)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->get_suspend_value)
+ return -ENOSYS;
+
+ return ops->get_suspend_value(dev);
+}
+
/*
* To be called with at most caution as there is no check
* before setting the actual voltage value.
@@ -170,6 +197,26 @@ int regulator_set_enable_if_allowed(struct udevice *dev,
bool enable)
return ret;
}
+int regulator_set_suspend_enable(struct udevice *dev, bool enable)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->set_suspend_enable)
+ return -ENOSYS;
+
+ return ops->set_suspend_enable(dev, enable);
+}
+
+int regulator_get_suspend_enable(struct udevice *dev)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->get_suspend_enable)
+ return -ENOSYS;
+
+ return ops->get_suspend_enable(dev);
+}
+
int regulator_get_mode(struct udevice *dev)
{
const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
@@ -235,6 +282,11 @@ int regulator_autoset(struct udevice *dev)
int ret = 0;
uc_pdata = dev_get_uclass_platdata(dev);
+
+ ret = regulator_set_suspend_enable(dev, uc_pdata->suspend_on);
+ if (!ret && uc_pdata->suspend_on)
+ ret = regulator_set_suspend_value(dev, uc_pdata->suspend_uV);
+
if (!uc_pdata->always_on && !uc_pdata->boot_on)
return -EMEDIUMTYPE;
@@ -243,6 +295,8 @@ int regulator_autoset(struct udevice *dev)
if (uc_pdata->flags & REGULATOR_FLAG_AUTOSET_UV)
ret = regulator_set_value(dev, uc_pdata->min_uV);
+ if (uc_pdata->init_uV > 0)
+ ret = regulator_set_value(dev, uc_pdata->init_uV);
if (!ret && (uc_pdata->flags & REGULATOR_FLAG_AUTOSET_UA))
ret = regulator_set_current(dev, uc_pdata->min_uA);
@@ -363,6 +417,7 @@ static int regulator_post_bind(struct udevice *dev)
static int regulator_pre_probe(struct udevice *dev)
{
struct dm_regulator_uclass_platdata *uc_pdata;
+ ofnode node;
uc_pdata = dev_get_uclass_platdata(dev);
if (!uc_pdata)
@@ -373,6 +428,8 @@ static int regulator_pre_probe(struct udevice *dev)
-ENODATA);
uc_pdata->max_uV = dev_read_u32_default(dev, "regulator-max-microvolt",
-ENODATA);
+ uc_pdata->init_uV = dev_read_u32_default(dev,
"regulator-init-microvolt",
+ -ENODATA);
uc_pdata->min_uA = dev_read_u32_default(dev, "regulator-min-microamp",
-ENODATA);
uc_pdata->max_uA = dev_read_u32_default(dev, "regulator-max-microamp",
@@ -382,6 +439,16 @@ static int regulator_pre_probe(struct udevice *dev)
uc_pdata->ramp_delay = dev_read_u32_default(dev, "regulator-ramp-delay",
0);
+ node = dev_read_subnode(dev, "regulator-state-mem");
+ if (ofnode_valid(node)) {
+ uc_pdata->suspend_on = !ofnode_read_bool(node,
"regulator-off-in-suspend");
+ if (ofnode_read_u32(node, "regulator-suspend-microvolt",
&uc_pdata->suspend_uV))
+ uc_pdata->suspend_uV = uc_pdata->max_uA;
+ } else {
+ uc_pdata->suspend_on = true;
+ uc_pdata->suspend_uV = uc_pdata->max_uA;
+ }
+
/* Those values are optional (-ENODATA if unset) */
if ((uc_pdata->min_uV != -ENODATA) &&
(uc_pdata->max_uV != -ENODATA) &&
diff --git a/include/power/regulator.h b/include/power/regulator.h
index 6c6e2cd4f996..64c5108950a0 100644
--- a/include/power/regulator.h
+++ b/include/power/regulator.h
@@ -168,6 +168,7 @@ struct dm_regulator_uclass_platdata {
int mode_count;
int min_uV;
int max_uV;
+ int init_uV;
int min_uA;
int max_uA;
unsigned int ramp_delay;
@@ -177,6 +178,8 @@ struct dm_regulator_uclass_platdata {
int flags;
u8 ctrl_reg;
u8 volt_reg;
+ bool suspend_on;
+ u32 suspend_uV;
};
/* Regulator device operations */
@@ -192,6 +195,8 @@ struct dm_regulator_ops {
*/
int (*get_value)(struct udevice *dev);
int (*set_value)(struct udevice *dev, int uV);
+ int (*set_suspend_value)(struct udevice *dev, int uV);
+ int (*get_suspend_value)(struct udevice *dev);
/**
* The regulator output current function calls operates on a micro Amps.
@@ -216,6 +221,8 @@ struct dm_regulator_ops {
*/
int (*get_enable)(struct udevice *dev);
int (*set_enable)(struct udevice *dev, bool enable);
+ int (*set_suspend_enable)(struct udevice *dev, bool enable);
+ int (*get_suspend_enable)(struct udevice *dev);
/**
* The 'get/set_mode()' function calls should operate on a driver-
@@ -262,6 +269,23 @@ int regulator_get_value(struct udevice *dev);
int regulator_set_value(struct udevice *dev, int uV);
/**
+ * regulator_set_suspend_value: set the suspend microvoltage value of a given
regulator.
+ *
+ * @dev - pointer to the regulator device
+ * @uV - the output suspend value to set [micro Volts]
+ * @return - 0 on success or -errno val if fails
+ */
+int regulator_set_suspend_value(struct udevice *dev, int uV);
+
+/**
+ * regulator_get_suspend_value: get the suspend microvoltage value of a given
regulator.
+ *
+ * @dev - pointer to the regulator device
+ * @return - positive output value [uV] on success or negative errno if fail.
+ */
+int regulator_get_suspend_value(struct udevice *dev);
+
+/**
* regulator_set_value_force: set the microvoltage value of a given regulator
* without any min-,max condition check
*
@@ -317,6 +341,24 @@ int regulator_set_enable(struct udevice *dev, bool enable);
int regulator_set_enable_if_allowed(struct udevice *dev, bool enable);
/**
+ * regulator_set_suspend_enable: set regulator suspend enable state
+ *
+ * @dev - pointer to the regulator device
+ * @enable - set true or false
+ * @return - 0 on success or -errno val if fails
+ */
+int regulator_set_suspend_enable(struct udevice *dev, bool enable);
+
+
+/**
+ * regulator_get_suspend_enable: get regulator suspend enable state
+ *
+ * @dev - pointer to the regulator device
+ * @return - 0 on success or -errno val if fails
+ */
+int regulator_get_suspend_enable(struct udevice *dev);
+
+/**
* regulator_get_mode: get active operation mode id of a given regulator
*
* @dev - pointer to the regulator device
--
1.9.1
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