diff options
| -rw-r--r-- | drivers/regulator/fixed.c | 106 |
1 files changed, 18 insertions, 88 deletions
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c index 5adc35aa6cc7..1a0b17e8d8a9 100644 --- a/drivers/regulator/fixed.c +++ b/drivers/regulator/fixed.c @@ -35,9 +35,6 @@ struct fixed_voltage_data { struct regulator_desc desc; struct regulator_dev *dev; int microvolts; - int gpio; - bool enable_high; - bool is_enabled; }; @@ -108,33 +105,6 @@ of_get_fixed_voltage_config(struct device *dev) return config; } -static int fixed_voltage_is_enabled(struct regulator_dev *dev) -{ - struct fixed_voltage_data *data = rdev_get_drvdata(dev); - - return data->is_enabled; -} - -static int fixed_voltage_enable(struct regulator_dev *dev) -{ - struct fixed_voltage_data *data = rdev_get_drvdata(dev); - - gpio_set_value_cansleep(data->gpio, data->enable_high); - data->is_enabled = true; - - return 0; -} - -static int fixed_voltage_disable(struct regulator_dev *dev) -{ - struct fixed_voltage_data *data = rdev_get_drvdata(dev); - - gpio_set_value_cansleep(data->gpio, !data->enable_high); - data->is_enabled = false; - - return 0; -} - static int fixed_voltage_get_voltage(struct regulator_dev *dev) { struct fixed_voltage_data *data = rdev_get_drvdata(dev); @@ -156,14 +126,6 @@ static int fixed_voltage_list_voltage(struct regulator_dev *dev, return data->microvolts; } -static struct regulator_ops fixed_voltage_gpio_ops = { - .is_enabled = fixed_voltage_is_enabled, - .enable = fixed_voltage_enable, - .disable = fixed_voltage_disable, - .get_voltage = fixed_voltage_get_voltage, - .list_voltage = fixed_voltage_list_voltage, -}; - static struct regulator_ops fixed_voltage_ops = { .get_voltage = fixed_voltage_get_voltage, .list_voltage = fixed_voltage_list_voltage, @@ -203,6 +165,7 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev) } drvdata->desc.type = REGULATOR_VOLTAGE; drvdata->desc.owner = THIS_MODULE; + drvdata->desc.ops = &fixed_voltage_ops; drvdata->desc.enable_time = config->startup_delay; @@ -210,53 +173,25 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev) drvdata->desc.n_voltages = 1; drvdata->microvolts = config->microvolts; - drvdata->gpio = config->gpio; - - if (gpio_is_valid(config->gpio)) { - int gpio_flag; - drvdata->enable_high = config->enable_high; - - /* FIXME: Remove below print warning - * - * config->gpio must be set to -EINVAL by platform code if - * GPIO control is not required. However, early adopters - * not requiring GPIO control may forget to initialize - * config->gpio to -EINVAL. This will cause GPIO 0 to be used - * for GPIO control. - * - * This warning will be removed once there are a couple of users - * for this driver. - */ - if (!config->gpio) - dev_warn(&pdev->dev, - "using GPIO 0 for regulator enable control\n"); - - /* - * 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_request_one(config->gpio, gpio_flag, - config->supply_name); - if (ret) { - dev_err(&pdev->dev, - "Could not obtain regulator enable GPIO %d: %d\n", - config->gpio, ret); - goto err_name; - } - - drvdata->desc.ops = &fixed_voltage_gpio_ops; + if (config->gpio >= 0) + cfg.ena_gpio = config->gpio; + cfg.ena_gpio_invert = !config->enable_high; + if (config->enabled_at_boot) { + if (config->enable_high) { + cfg.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH; + } else { + cfg.ena_gpio_flags |= GPIOF_OUT_INIT_LOW; + } } else { - drvdata->desc.ops = &fixed_voltage_ops; + if (config->enable_high) { + cfg.ena_gpio_flags |= GPIOF_OUT_INIT_LOW; + } else { + cfg.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH; + } } + if (config->gpio_is_open_drain) + cfg.ena_gpio_flags |= GPIOF_OPEN_DRAIN; cfg.dev = &pdev->dev; cfg.init_data = config->init_data; @@ -267,7 +202,7 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev) if (IS_ERR(drvdata->dev)) { ret = PTR_ERR(drvdata->dev); dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret); - goto err_gpio; + goto err_name; } platform_set_drvdata(pdev, drvdata); @@ -277,9 +212,6 @@ static int __devinit reg_fixed_voltage_probe(struct platform_device *pdev) return 0; -err_gpio: - if (gpio_is_valid(config->gpio)) - gpio_free(config->gpio); err_name: kfree(drvdata->desc.name); err: @@ -291,8 +223,6 @@ static int __devexit reg_fixed_voltage_remove(struct platform_device *pdev) struct fixed_voltage_data *drvdata = platform_get_drvdata(pdev); regulator_unregister(drvdata->dev); - if (gpio_is_valid(drvdata->gpio)) - gpio_free(drvdata->gpio); kfree(drvdata->desc.name); return 0; |