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path: root/drivers/regulator/s2mps11.c
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Diffstat (limited to 'drivers/regulator/s2mps11.c')
-rw-r--r--drivers/regulator/s2mps11.c363
1 files changed, 363 insertions, 0 deletions
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
new file mode 100644
index 000000000000..4669dc9ac74a
--- /dev/null
+++ b/drivers/regulator/s2mps11.c
@@ -0,0 +1,363 @@
+/*
+ * s2mps11.c
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ * http://www.samsung.com
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/bug.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/samsung/core.h>
+#include <linux/mfd/samsung/s2mps11.h>
+
+struct s2mps11_info {
+ struct regulator_dev **rdev;
+
+ int ramp_delay2;
+ int ramp_delay34;
+ int ramp_delay5;
+ int ramp_delay16;
+ int ramp_delay7810;
+ int ramp_delay9;
+
+ bool buck6_ramp;
+ bool buck2_ramp;
+ bool buck3_ramp;
+ bool buck4_ramp;
+};
+
+static int get_ramp_delay(int ramp_delay)
+{
+ unsigned char cnt = 0;
+
+ ramp_delay /= 6;
+
+ while (true) {
+ ramp_delay = ramp_delay >> 1;
+ if (ramp_delay == 0)
+ break;
+ cnt++;
+ }
+ return cnt;
+}
+
+static struct regulator_ops s2mps11_ldo_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+};
+
+static struct regulator_ops s2mps11_buck_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+};
+
+#define regulator_desc_ldo1(num) { \
+ .name = "LDO"#num, \
+ .id = S2MPS11_LDO##num, \
+ .ops = &s2mps11_ldo_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS11_LDO_MIN, \
+ .uV_step = S2MPS11_LDO_STEP1, \
+ .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
+ .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
+ .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
+ .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
+ .enable_mask = S2MPS11_ENABLE_MASK \
+}
+#define regulator_desc_ldo2(num) { \
+ .name = "LDO"#num, \
+ .id = S2MPS11_LDO##num, \
+ .ops = &s2mps11_ldo_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS11_LDO_MIN, \
+ .uV_step = S2MPS11_LDO_STEP2, \
+ .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
+ .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
+ .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
+ .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
+ .enable_mask = S2MPS11_ENABLE_MASK \
+}
+
+#define regulator_desc_buck1_4(num) { \
+ .name = "BUCK"#num, \
+ .id = S2MPS11_BUCK##num, \
+ .ops = &s2mps11_buck_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS11_BUCK_MIN1, \
+ .uV_step = S2MPS11_BUCK_STEP1, \
+ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
+ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
+ .enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
+ .enable_mask = S2MPS11_ENABLE_MASK \
+}
+
+#define regulator_desc_buck5 { \
+ .name = "BUCK5", \
+ .id = S2MPS11_BUCK5, \
+ .ops = &s2mps11_buck_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS11_BUCK_MIN1, \
+ .uV_step = S2MPS11_BUCK_STEP1, \
+ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .vsel_reg = S2MPS11_REG_B5CTRL2, \
+ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
+ .enable_reg = S2MPS11_REG_B5CTRL1, \
+ .enable_mask = S2MPS11_ENABLE_MASK \
+}
+
+#define regulator_desc_buck6_8(num) { \
+ .name = "BUCK"#num, \
+ .id = S2MPS11_BUCK##num, \
+ .ops = &s2mps11_buck_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS11_BUCK_MIN1, \
+ .uV_step = S2MPS11_BUCK_STEP1, \
+ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
+ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
+ .enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
+ .enable_mask = S2MPS11_ENABLE_MASK \
+}
+
+#define regulator_desc_buck9 { \
+ .name = "BUCK9", \
+ .id = S2MPS11_BUCK9, \
+ .ops = &s2mps11_buck_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS11_BUCK_MIN3, \
+ .uV_step = S2MPS11_BUCK_STEP3, \
+ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .vsel_reg = S2MPS11_REG_B9CTRL2, \
+ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
+ .enable_reg = S2MPS11_REG_B9CTRL1, \
+ .enable_mask = S2MPS11_ENABLE_MASK \
+}
+
+#define regulator_desc_buck10 { \
+ .name = "BUCK10", \
+ .id = S2MPS11_BUCK10, \
+ .ops = &s2mps11_buck_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS11_BUCK_MIN2, \
+ .uV_step = S2MPS11_BUCK_STEP2, \
+ .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .vsel_reg = S2MPS11_REG_B9CTRL2, \
+ .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
+ .enable_reg = S2MPS11_REG_B9CTRL1, \
+ .enable_mask = S2MPS11_ENABLE_MASK \
+}
+
+static struct regulator_desc regulators[] = {
+ regulator_desc_ldo2(1),
+ regulator_desc_ldo1(2),
+ regulator_desc_ldo1(3),
+ regulator_desc_ldo1(4),
+ regulator_desc_ldo1(5),
+ regulator_desc_ldo2(6),
+ regulator_desc_ldo1(7),
+ regulator_desc_ldo1(8),
+ regulator_desc_ldo1(9),
+ regulator_desc_ldo1(10),
+ regulator_desc_ldo2(11),
+ regulator_desc_ldo1(12),
+ regulator_desc_ldo1(13),
+ regulator_desc_ldo1(14),
+ regulator_desc_ldo1(15),
+ regulator_desc_ldo1(16),
+ regulator_desc_ldo1(17),
+ regulator_desc_ldo1(18),
+ regulator_desc_ldo1(19),
+ regulator_desc_ldo1(20),
+ regulator_desc_ldo1(21),
+ regulator_desc_ldo2(22),
+ regulator_desc_ldo2(23),
+ regulator_desc_ldo1(24),
+ regulator_desc_ldo1(25),
+ regulator_desc_ldo1(26),
+ regulator_desc_ldo2(27),
+ regulator_desc_ldo1(28),
+ regulator_desc_ldo1(29),
+ regulator_desc_ldo1(30),
+ regulator_desc_ldo1(31),
+ regulator_desc_ldo1(32),
+ regulator_desc_ldo1(33),
+ regulator_desc_ldo1(34),
+ regulator_desc_ldo1(35),
+ regulator_desc_ldo1(36),
+ regulator_desc_ldo1(37),
+ regulator_desc_ldo1(38),
+ regulator_desc_buck1_4(1),
+ regulator_desc_buck1_4(2),
+ regulator_desc_buck1_4(3),
+ regulator_desc_buck1_4(4),
+ regulator_desc_buck5,
+ regulator_desc_buck6_8(6),
+ regulator_desc_buck6_8(7),
+ regulator_desc_buck6_8(8),
+ regulator_desc_buck9,
+ regulator_desc_buck10,
+};
+
+static __devinit int s2mps11_pmic_probe(struct platform_device *pdev)
+{
+ struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
+ struct regulator_config config = { };
+ struct regulator_dev **rdev;
+ struct s2mps11_info *s2mps11;
+ int i, ret, size;
+ unsigned char ramp_enable, ramp_reg = 0;
+
+ if (!pdata) {
+ dev_err(pdev->dev.parent, "Platform data not supplied\n");
+ return -ENODEV;
+ }
+
+ s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
+ GFP_KERNEL);
+ if (!s2mps11)
+ return -ENOMEM;
+
+ size = sizeof(struct regulator_dev *) * S2MPS11_REGULATOR_MAX;
+ s2mps11->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+ if (!s2mps11->rdev) {
+ return -ENOMEM;
+ }
+
+ rdev = s2mps11->rdev;
+ platform_set_drvdata(pdev, s2mps11);
+
+ s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
+ s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
+ s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
+ s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
+ s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
+ s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
+
+ s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
+ s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
+ s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
+ s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
+
+ ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
+ (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;
+
+ if (ramp_enable) {
+ if (s2mps11->buck2_ramp)
+ ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
+ if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
+ ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
+ sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg | ramp_enable);
+ }
+
+ ramp_reg &= 0x00;
+ ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
+ ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
+ ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
+ ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
+ sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg);
+
+ for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
+
+ config.dev = &pdev->dev;
+ config.regmap = iodev->regmap;
+ config.init_data = pdata->regulators[i].initdata;
+ config.driver_data = s2mps11;
+
+ rdev[i] = regulator_register(&regulators[i], &config);
+ if (IS_ERR(rdev[i])) {
+ ret = PTR_ERR(rdev[i]);
+ dev_err(&pdev->dev, "regulator init failed for %d\n",
+ i);
+ rdev[i] = NULL;
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
+ if (rdev[i])
+ regulator_unregister(rdev[i]);
+
+ return ret;
+}
+
+static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
+{
+ struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
+ struct regulator_dev **rdev = s2mps11->rdev;
+ int i;
+
+ for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
+ if (rdev[i])
+ regulator_unregister(rdev[i]);
+
+ return 0;
+}
+
+static const struct platform_device_id s2mps11_pmic_id[] = {
+ { "s2mps11-pmic", 0},
+ { },
+};
+MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
+
+static struct platform_driver s2mps11_pmic_driver = {
+ .driver = {
+ .name = "s2mps11-pmic",
+ .owner = THIS_MODULE,
+ },
+ .probe = s2mps11_pmic_probe,
+ .remove = __devexit_p(s2mps11_pmic_remove),
+ .id_table = s2mps11_pmic_id,
+};
+
+static int __init s2mps11_pmic_init(void)
+{
+ return platform_driver_register(&s2mps11_pmic_driver);
+}
+subsys_initcall(s2mps11_pmic_init);
+
+static void __exit s2mps11_pmic_exit(void)
+{
+ platform_driver_unregister(&s2mps11_pmic_driver);
+}
+module_exit(s2mps11_pmic_exit);
+
+/* Module information */
+MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
+MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-02 02:36:45 +0300