On 2023-10-03 08:21, Svyatoslav Ryhel wrote:
Commit is based on 4fcba5d ("regulator: implement basic reference counter") but expands the idea to all regulators instead of just fixed/gpio regulators.
Signed-off-by: Svyatoslav Ryhel clamor95@gmail.com Reviewed-by: Simon Glass sjg@chromium.org
drivers/power/regulator/regulator-uclass.c | 41 ++++++++++++++++++++++ drivers/power/regulator/regulator_common.c | 22 ------------ drivers/power/regulator/regulator_common.h | 21 ----------- include/power/regulator.h | 2 ++ 4 files changed, 43 insertions(+), 43 deletions(-)
diff --git a/drivers/power/regulator/regulator-uclass.c b/drivers/power/regulator/regulator-uclass.c index d5a79d861c..4b2c6c2964 100644 --- a/drivers/power/regulator/regulator-uclass.c +++ b/drivers/power/regulator/regulator-uclass.c @@ -159,6 +159,25 @@ int regulator_get_enable(struct udevice *dev) return ops->get_enable(dev); }
+/*
- Enable or Disable a regulator
- This is a reentrant function and subsequent calls that enable will
- increase an internal counter, and disable calls will decrease the counter.
- The actual resource will be enabled when the counter gets to 1 coming from 0,
- and disabled when it reaches 0 coming from 1.
- @dev: regulator device
- @enable: bool indicating whether to enable or disable the regulator
- @return:
- 0 on Success
- -EBUSY if the regulator cannot be disabled because it's requested by
another device
- -EALREADY if the regulator has already been enabled or has already been
disabled
- -EACCES if there is no possibility to enable/disable the regulator
- -ve on different error situation
- */
Maybe better to replace the existing comment for this function in include/power/regulator.h ?
Regards, Jonas
int regulator_set_enable(struct udevice *dev, bool enable) { const struct dm_regulator_ops *ops = dev_get_driver_ops(dev); @@ -172,6 +191,23 @@ int regulator_set_enable(struct udevice *dev, bool enable) if (!enable && uc_pdata->always_on) return -EACCES;
- /* If previously enabled, increase count */
- if (enable && uc_pdata->enable_count > 0) {
uc_pdata->enable_count++;return -EALREADY;- }
- if (!enable) {
if (uc_pdata->enable_count > 1) {/* If enabled multiple times, decrease count */uc_pdata->enable_count--;return -EBUSY;} else if (!uc_pdata->enable_count) {/* If already disabled, do nothing */return -EALREADY;}- }
- if (uc_pdata->ramp_delay) old_enable = regulator_get_enable(dev);
@@ -187,6 +223,11 @@ int regulator_set_enable(struct udevice *dev, bool enable) } }
- if (enable)
uc_pdata->enable_count++;- else
uc_pdata->enable_count--;- return ret;
}
diff --git a/drivers/power/regulator/regulator_common.c b/drivers/power/regulator/regulator_common.c index 0116fa01bb..62d06bf616 100644 --- a/drivers/power/regulator/regulator_common.c +++ b/drivers/power/regulator/regulator_common.c @@ -74,23 +74,6 @@ int regulator_common_set_enable(const struct udevice *dev, return 0; }
- /* If previously enabled, increase count */
- if (enable && plat->enable_count > 0) {
plat->enable_count++;return -EALREADY;- }
- if (!enable) {
if (plat->enable_count > 1) {/* If enabled multiple times, decrease count */plat->enable_count--;return -EBUSY;} else if (!plat->enable_count) {/* If already disabled, do nothing */return -EALREADY;}- }
- ret = dm_gpio_set_value(&plat->gpio, enable); if (ret) { pr_err("Can't set regulator : %s gpio to: %d\n", dev->name,
@@ -105,10 +88,5 @@ int regulator_common_set_enable(const struct udevice *dev, if (!enable && plat->off_on_delay_us) udelay(plat->off_on_delay_us);
- if (enable)
plat->enable_count++;- else
plat->enable_count--;- return 0;
} diff --git a/drivers/power/regulator/regulator_common.h b/drivers/power/regulator/regulator_common.h index d4962899d8..15f1fa4c93 100644 --- a/drivers/power/regulator/regulator_common.h +++ b/drivers/power/regulator/regulator_common.h @@ -13,7 +13,6 @@ struct regulator_common_plat { struct gpio_desc gpio; /* GPIO for regulator enable control */ unsigned int startup_delay_us; unsigned int off_on_delay_us;
- unsigned int enable_count;
};
int regulator_common_of_to_plat(struct udevice *dev, @@ -21,26 +20,6 @@ int regulator_common_of_to_plat(struct udevice *dev, char *enable_gpio_name); int regulator_common_get_enable(const struct udevice *dev, struct regulator_common_plat *plat); -/*
- Enable or Disable a regulator
- This is a reentrant function and subsequent calls that enable will
- increase an internal counter, and disable calls will decrease the counter.
- The actual resource will be enabled when the counter gets to 1 coming from 0,
- and disabled when it reaches 0 coming from 1.
- @dev: regulator device
- @plat: Platform data
- @enable: bool indicating whether to enable or disable the regulator
- @return:
- 0 on Success
- -EBUSY if the regulator cannot be disabled because it's requested by
another device
- -EALREADY if the regulator has already been enabled or has already been
disabled
- -EACCES if there is no possibility to enable/disable the regulator
- -ve on different error situation
- */
int regulator_common_set_enable(const struct udevice *dev, struct regulator_common_plat *plat, bool enable);
diff --git a/include/power/regulator.h b/include/power/regulator.h index 200652cb3d..1c7995bd5d 100644 --- a/include/power/regulator.h +++ b/include/power/regulator.h @@ -159,6 +159,7 @@ enum regulator_flag {
- @name** - fdt regulator name - should be taken from the device tree
- ctrl_reg: - Control register offset used to enable/disable regulator
- volt_reg: - register offset for writing voltage vsel values
- enable_count - counter of enable calls for this regulator
- Note:
- set automatically on device probe by the uclass's '.pre_probe' method.
@@ -185,6 +186,7 @@ struct dm_regulator_uclass_plat { u8 volt_reg; bool suspend_on; u32 suspend_uV;
- u32 enable_count;
};
/* Regulator device operations */