Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / regulator / rt5033-regulator.c

diff --git a/kernel/drivers/regulator/rt5033-regulator.c b/kernel/drivers/regulator/rt5033-regulator.c
new file mode 100644 (file)
index 0000000..96d2c18
--- /dev/null
+++ b/kernel/drivers/regulator/rt5033-regulator.c
@@ -0,0 +1,129 @@
+/*
+ * Regulator driver for the Richtek RT5033
+ *
+ * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
+ * Author: Beomho Seo <beomho.seo@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published bythe Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/mfd/rt5033.h>
+#include <linux/mfd/rt5033-private.h>
+#include <linux/regulator/of_regulator.h>
+
+static struct regulator_ops rt5033_safe_ldo_ops = {
+       .is_enabled             = regulator_is_enabled_regmap,
+       .enable                 = regulator_enable_regmap,
+       .disable                = regulator_disable_regmap,
+       .list_voltage           = regulator_list_voltage_linear,
+};
+
+static struct regulator_ops rt5033_buck_ops = {
+       .is_enabled             = regulator_is_enabled_regmap,
+       .enable                 = regulator_enable_regmap,
+       .disable                = regulator_disable_regmap,
+       .list_voltage           = regulator_list_voltage_linear,
+       .map_voltage            = regulator_map_voltage_linear,
+       .get_voltage_sel        = regulator_get_voltage_sel_regmap,
+       .set_voltage_sel        = regulator_set_voltage_sel_regmap,
+};
+
+static const struct regulator_desc rt5033_supported_regulators[] = {
+       [RT5033_BUCK] = {
+               .name           = "BUCK",
+               .of_match       = of_match_ptr("BUCK"),
+               .regulators_node = of_match_ptr("regulators"),
+               .id             = RT5033_BUCK,
+               .ops            = &rt5033_buck_ops,
+               .type           = REGULATOR_VOLTAGE,
+               .owner          = THIS_MODULE,
+               .n_voltages     = RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM,
+               .min_uV         = RT5033_REGULATOR_BUCK_VOLTAGE_MIN,
+               .uV_step        = RT5033_REGULATOR_BUCK_VOLTAGE_STEP,
+               .enable_reg     = RT5033_REG_CTRL,
+               .enable_mask    = RT5033_CTRL_EN_BUCK_MASK,
+               .vsel_reg       = RT5033_REG_BUCK_CTRL,
+               .vsel_mask      = RT5033_BUCK_CTRL_MASK,
+       },
+       [RT5033_LDO] = {
+               .name           = "LDO",
+               .of_match       = of_match_ptr("LDO"),
+               .regulators_node = of_match_ptr("regulators"),
+               .id             = RT5033_LDO,
+               .ops            = &rt5033_buck_ops,
+               .type           = REGULATOR_VOLTAGE,
+               .owner          = THIS_MODULE,
+               .n_voltages     = RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM,
+               .min_uV         = RT5033_REGULATOR_LDO_VOLTAGE_MIN,
+               .uV_step        = RT5033_REGULATOR_LDO_VOLTAGE_STEP,
+               .enable_reg     = RT5033_REG_CTRL,
+               .enable_mask    = RT5033_CTRL_EN_LDO_MASK,
+               .vsel_reg       = RT5033_REG_LDO_CTRL,
+               .vsel_mask      = RT5033_LDO_CTRL_MASK,
+       },
+       [RT5033_SAFE_LDO] = {
+               .name           = "SAFE_LDO",
+               .of_match       = of_match_ptr("SAFE_LDO"),
+               .regulators_node = of_match_ptr("regulators"),
+               .id             = RT5033_SAFE_LDO,
+               .ops            = &rt5033_safe_ldo_ops,
+               .type           = REGULATOR_VOLTAGE,
+               .owner          = THIS_MODULE,
+               .n_voltages     = 1,
+               .min_uV         = RT5033_REGULATOR_SAFE_LDO_VOLTAGE,
+               .enable_reg     = RT5033_REG_CTRL,
+               .enable_mask    = RT5033_CTRL_EN_SAFE_LDO_MASK,
+       },
+};
+
+static int rt5033_regulator_probe(struct platform_device *pdev)
+{
+       struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent);
+       int ret, i;
+       struct regulator_config config = {};
+
+       config.dev = rt5033->dev;
+       config.driver_data = rt5033;
+
+       for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) {
+               struct regulator_dev *regulator;
+
+               config.regmap = rt5033->regmap;
+
+               regulator = devm_regulator_register(&pdev->dev,
+                               &rt5033_supported_regulators[i], &config);
+               if (IS_ERR(regulator)) {
+                       ret = PTR_ERR(regulator);
+                       dev_err(&pdev->dev,
+                               "Regulator init failed %d: with error: %d\n",
+                               i, ret);
+                       return ret;
+               }
+       }
+
+       return 0;
+}
+
+static const struct platform_device_id rt5033_regulator_id[] = {
+       { "rt5033-regulator", },
+       { }
+};
+MODULE_DEVICE_TABLE(platform, rt5033_regulator_id);
+
+static struct platform_driver rt5033_regulator_driver = {
+       .driver = {
+               .name = "rt5033-regulator",
+       },
+       .probe          = rt5033_regulator_probe,
+       .id_table       = rt5033_regulator_id,
+};
+module_platform_driver(rt5033_regulator_driver);
+
+MODULE_DESCRIPTION("Richtek RT5033 Regulator driver");
+MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
+MODULE_LICENSE("GPL");