drvdata->startup_delay = config->startup_delay;
if (gpio_is_valid(config->gpio)) {
+ int gpio_flag;
drvdata->enable_high = config->enable_high;
/* FIXME: Remove below print warning
dev_warn(&pdev->dev,
"using GPIO 0 for regulator enable control\n");
- ret = gpio_request(config->gpio, config->supply_name);
- if (ret) {
- dev_err(&pdev->dev,
- "Could not obtain regulator enable GPIO %d: %d\n",
- config->gpio, ret);
- goto err_name;
- }
-
- /* set output direction without changing state
+ /*
+ * set output direction without changing state
* to prevent glitch
*/
drvdata->is_enabled = config->enabled_at_boot;
ret = drvdata->is_enabled ?
config->enable_high : !config->enable_high;
+ gpio_flag = ret ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
+
+ if (config->gpio_is_open_drain)
+ gpio_flag |= GPIOF_OPEN_DRAIN;
- ret = gpio_direction_output(config->gpio, ret);
+ ret = gpio_request_one(config->gpio, gpio_flag,
+ config->supply_name);
if (ret) {
dev_err(&pdev->dev,
- "Could not configure regulator enable GPIO %d direction: %d\n",
+ "Could not obtain regulator enable GPIO %d: %d\n",
config->gpio, ret);
- goto err_gpio;
+ goto err_name;
}
drvdata->desc.ops = &fixed_voltage_gpio_ops;
* @gpio: GPIO to use for enable control
* set to -EINVAL if not used
* @startup_delay: Start-up time in microseconds
+ * @gpio_is_open_drain: Gpio pin is open drain or normal type.
+ * If it is open drain type then HIGH will be set
+ * through PULL-UP with setting gpio as input
+ * and low will be set as gpio-output with driven
+ * to low. For non-open-drain case, the gpio will
+ * will be in output and drive to low/high accordingly.
* @enable_high: Polarity of enable GPIO
* 1 = Active high, 0 = Active low
* @enabled_at_boot: Whether regulator has been enabled at
int microvolts;
int gpio;
unsigned startup_delay;
+ unsigned gpio_is_open_drain:1;
unsigned enable_high:1;
unsigned enabled_at_boot:1;
struct regulator_init_data *init_data;