*/
#include <common.h>
-#include <fdtdec.h>
#include <errno.h>
#include <dm.h>
#include <i2c.h>
struct fixed_regulator_platdata {
struct gpio_desc gpio; /* GPIO for regulator enable control */
+ unsigned int startup_delay_us;
};
static int fixed_regulator_ofdata_to_platdata(struct udevice *dev)
struct dm_regulator_uclass_platdata *uc_pdata;
struct fixed_regulator_platdata *dev_pdata;
struct gpio_desc *gpio;
+ int flags = GPIOD_IS_OUT;
int ret;
dev_pdata = dev_get_platdata(dev);
/* Set type to fixed */
uc_pdata->type = REGULATOR_TYPE_FIXED;
- /* Get fixed regulator gpio desc */
+ if (dev_read_bool(dev, "enable-active-high"))
+ flags |= GPIOD_IS_OUT_ACTIVE;
+
+ /* Get fixed regulator optional enable GPIO desc */
gpio = &dev_pdata->gpio;
- ret = gpio_request_by_name(dev, "gpio", 0, gpio, GPIOD_IS_OUT);
- if (ret)
- debug("Fixed regulator gpio - not found! Error: %d", ret);
+ ret = gpio_request_by_name(dev, "gpio", 0, gpio, flags);
+ if (ret) {
+ debug("Fixed regulator optional enable GPIO - not found! Error: %d\n",
+ ret);
+ if (ret != -ENOENT)
+ return ret;
+ }
+
+ /* Get optional ramp up delay */
+ dev_pdata->startup_delay_us = dev_read_u32_default(dev,
+ "startup-delay-us", 0);
return 0;
}
return uc_pdata->min_uA;
}
-static bool fixed_regulator_get_enable(struct udevice *dev)
+static int fixed_regulator_get_enable(struct udevice *dev)
{
struct fixed_regulator_platdata *dev_pdata = dev_get_platdata(dev);
+ /* Enable GPIO is optional */
if (!dev_pdata->gpio.dev)
- return false;
+ return true;
return dm_gpio_get_value(&dev_pdata->gpio);
}
struct fixed_regulator_platdata *dev_pdata = dev_get_platdata(dev);
int ret;
- if (!dev_pdata->gpio.dev)
- return -ENOSYS;
+ debug("%s: dev='%s', enable=%d, delay=%d, has_gpio=%d\n", __func__,
+ dev->name, enable, dev_pdata->startup_delay_us,
+ dm_gpio_is_valid(&dev_pdata->gpio));
+ /* Enable GPIO is optional */
+ if (!dm_gpio_is_valid(&dev_pdata->gpio)) {
+ if (!enable)
+ return -ENOSYS;
+ return 0;
+ }
ret = dm_gpio_set_value(&dev_pdata->gpio, enable);
if (ret) {
- error("Can't set regulator : %s gpio to: %d\n", dev->name,
+ pr_err("Can't set regulator : %s gpio to: %d\n", dev->name,
enable);
return ret;
}
+
+ if (enable && dev_pdata->startup_delay_us)
+ udelay(dev_pdata->startup_delay_us);
+ debug("%s: done\n", __func__);
+
return 0;
}