diff options
Diffstat (limited to 'drivers/regulator/max77686.c')
| -rw-r--r-- | drivers/regulator/max77686.c | 539 |
1 files changed, 0 insertions, 539 deletions
diff --git a/drivers/regulator/max77686.c b/drivers/regulator/max77686.c deleted file mode 100644 index f563057e5690..000000000000 --- a/drivers/regulator/max77686.c +++ /dev/null @@ -1,539 +0,0 @@ -/* - * max77686.c - Regulator driver for the Maxim 77686 - * - * Copyright (C) 2012 Samsung Electronics - * Chiwoong Byun <woong.byun@smasung.com> - * Jonghwa Lee <jonghwa3.lee@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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * This driver is based on max8997.c - */ - -#include <linux/kernel.h> -#include <linux/bug.h> -#include <linux/err.h> -#include <linux/gpio.h> -#include <linux/slab.h> -#include <linux/platform_device.h> -#include <linux/regulator/driver.h> -#include <linux/regulator/machine.h> -#include <linux/regulator/of_regulator.h> -#include <linux/mfd/max77686.h> -#include <linux/mfd/max77686-private.h> - -#define MAX77686_LDO_MINUV 800000 -#define MAX77686_LDO_UVSTEP 50000 -#define MAX77686_LDO_LOW_MINUV 800000 -#define MAX77686_LDO_LOW_UVSTEP 25000 -#define MAX77686_BUCK_MINUV 750000 -#define MAX77686_BUCK_UVSTEP 50000 -#define MAX77686_RAMP_DELAY 100000 /* uV/us */ -#define MAX77686_DVS_RAMP_DELAY 27500 /* uV/us */ -#define MAX77686_DVS_MINUV 600000 -#define MAX77686_DVS_UVSTEP 12500 - -#define MAX77686_OPMODE_SHIFT 6 -#define MAX77686_OPMODE_BUCK234_SHIFT 4 -#define MAX77686_OPMODE_MASK 0x3 - -#define MAX77686_VSEL_MASK 0x3F -#define MAX77686_DVS_VSEL_MASK 0xFF - -#define MAX77686_RAMP_RATE_MASK 0xC0 - -#define MAX77686_REGULATORS MAX77686_REG_MAX -#define MAX77686_LDOS 26 - -enum max77686_ramp_rate { - RAMP_RATE_13P75MV, - RAMP_RATE_27P5MV, - RAMP_RATE_55MV, - RAMP_RATE_NO_CTRL, /* 100mV/us */ -}; - -struct max77686_data { - struct regulator_dev *rdev[MAX77686_REGULATORS]; - unsigned int opmode[MAX77686_REGULATORS]; -}; - -/* Some BUCKS supports Normal[ON/OFF] mode during suspend */ -static int max77686_buck_set_suspend_disable(struct regulator_dev *rdev) -{ - unsigned int val; - struct max77686_data *max77686 = rdev_get_drvdata(rdev); - int ret, id = rdev_get_id(rdev); - - if (id == MAX77686_BUCK1) - val = 0x1; - else - val = 0x1 << MAX77686_OPMODE_BUCK234_SHIFT; - - ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, - rdev->desc->enable_mask, val); - if (ret) - return ret; - - max77686->opmode[id] = val; - return 0; -} - -/* Some LDOs supports [LPM/Normal]ON mode during suspend state */ -static int max77686_set_suspend_mode(struct regulator_dev *rdev, - unsigned int mode) -{ - struct max77686_data *max77686 = rdev_get_drvdata(rdev); - unsigned int val; - int ret, id = rdev_get_id(rdev); - - /* BUCK[5-9] doesn't support this feature */ - if (id >= MAX77686_BUCK5) - return 0; - - switch (mode) { - case REGULATOR_MODE_IDLE: /* ON in LP Mode */ - val = 0x2 << MAX77686_OPMODE_SHIFT; - break; - case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ - val = 0x3 << MAX77686_OPMODE_SHIFT; - break; - default: - pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", - rdev->desc->name, mode); - return -EINVAL; - } - - ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, - rdev->desc->enable_mask, val); - if (ret) - return ret; - - max77686->opmode[id] = val; - return 0; -} - -/* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */ -static int max77686_ldo_set_suspend_mode(struct regulator_dev *rdev, - unsigned int mode) -{ - unsigned int val; - struct max77686_data *max77686 = rdev_get_drvdata(rdev); - int ret; - - switch (mode) { - case REGULATOR_MODE_STANDBY: /* switch off */ - val = 0x1 << MAX77686_OPMODE_SHIFT; - break; - case REGULATOR_MODE_IDLE: /* ON in LP Mode */ - val = 0x2 << MAX77686_OPMODE_SHIFT; - break; - case REGULATOR_MODE_NORMAL: /* ON in Normal Mode */ - val = 0x3 << MAX77686_OPMODE_SHIFT; - break; - default: - pr_warn("%s: regulator_suspend_mode : 0x%x not supported\n", - rdev->desc->name, mode); - return -EINVAL; - } - - ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, - rdev->desc->enable_mask, val); - if (ret) - return ret; - - max77686->opmode[rdev_get_id(rdev)] = val; - return 0; -} - -static int max77686_enable(struct regulator_dev *rdev) -{ - struct max77686_data *max77686 = rdev_get_drvdata(rdev); - - return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, - rdev->desc->enable_mask, - max77686->opmode[rdev_get_id(rdev)]); -} - -static int max77686_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) -{ - unsigned int ramp_value = RAMP_RATE_NO_CTRL; - - switch (ramp_delay) { - case 1 ... 13750: - ramp_value = RAMP_RATE_13P75MV; - break; - case 13751 ... 27500: - ramp_value = RAMP_RATE_27P5MV; - break; - case 27501 ... 55000: - ramp_value = RAMP_RATE_55MV; - break; - case 55001 ... 100000: - break; - default: - pr_warn("%s: ramp_delay: %d not supported, setting 100000\n", - rdev->desc->name, ramp_delay); - } - - return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, - MAX77686_RAMP_RATE_MASK, ramp_value << 6); -} - -static struct regulator_ops max77686_ops = { - .list_voltage = regulator_list_voltage_linear, - .map_voltage = regulator_map_voltage_linear, - .is_enabled = regulator_is_enabled_regmap, - .enable = max77686_enable, - .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, - .set_suspend_mode = max77686_set_suspend_mode, -}; - -static struct regulator_ops max77686_ldo_ops = { - .list_voltage = regulator_list_voltage_linear, - .map_voltage = regulator_map_voltage_linear, - .is_enabled = regulator_is_enabled_regmap, - .enable = max77686_enable, - .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, - .set_suspend_mode = max77686_ldo_set_suspend_mode, -}; - -static struct regulator_ops max77686_buck1_ops = { - .list_voltage = regulator_list_voltage_linear, - .map_voltage = regulator_map_voltage_linear, - .is_enabled = regulator_is_enabled_regmap, - .enable = max77686_enable, - .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, - .set_suspend_disable = max77686_buck_set_suspend_disable, -}; - -static struct regulator_ops max77686_buck_dvs_ops = { - .list_voltage = regulator_list_voltage_linear, - .map_voltage = regulator_map_voltage_linear, - .is_enabled = regulator_is_enabled_regmap, - .enable = max77686_enable, - .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, - .set_ramp_delay = max77686_set_ramp_delay, - .set_suspend_disable = max77686_buck_set_suspend_disable, -}; - -#define regulator_desc_ldo(num) { \ - .name = "LDO"#num, \ - .id = MAX77686_LDO##num, \ - .ops = &max77686_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .min_uV = MAX77686_LDO_MINUV, \ - .uV_step = MAX77686_LDO_UVSTEP, \ - .ramp_delay = MAX77686_RAMP_DELAY, \ - .n_voltages = MAX77686_VSEL_MASK + 1, \ - .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .vsel_mask = MAX77686_VSEL_MASK, \ - .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .enable_mask = MAX77686_OPMODE_MASK \ - << MAX77686_OPMODE_SHIFT, \ -} -#define regulator_desc_lpm_ldo(num) { \ - .name = "LDO"#num, \ - .id = MAX77686_LDO##num, \ - .ops = &max77686_ldo_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .min_uV = MAX77686_LDO_MINUV, \ - .uV_step = MAX77686_LDO_UVSTEP, \ - .ramp_delay = MAX77686_RAMP_DELAY, \ - .n_voltages = MAX77686_VSEL_MASK + 1, \ - .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .vsel_mask = MAX77686_VSEL_MASK, \ - .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .enable_mask = MAX77686_OPMODE_MASK \ - << MAX77686_OPMODE_SHIFT, \ -} -#define regulator_desc_ldo_low(num) { \ - .name = "LDO"#num, \ - .id = MAX77686_LDO##num, \ - .ops = &max77686_ldo_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .min_uV = MAX77686_LDO_LOW_MINUV, \ - .uV_step = MAX77686_LDO_LOW_UVSTEP, \ - .ramp_delay = MAX77686_RAMP_DELAY, \ - .n_voltages = MAX77686_VSEL_MASK + 1, \ - .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .vsel_mask = MAX77686_VSEL_MASK, \ - .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .enable_mask = MAX77686_OPMODE_MASK \ - << MAX77686_OPMODE_SHIFT, \ -} -#define regulator_desc_ldo1_low(num) { \ - .name = "LDO"#num, \ - .id = MAX77686_LDO##num, \ - .ops = &max77686_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .min_uV = MAX77686_LDO_LOW_MINUV, \ - .uV_step = MAX77686_LDO_LOW_UVSTEP, \ - .ramp_delay = MAX77686_RAMP_DELAY, \ - .n_voltages = MAX77686_VSEL_MASK + 1, \ - .vsel_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .vsel_mask = MAX77686_VSEL_MASK, \ - .enable_reg = MAX77686_REG_LDO1CTRL1 + num - 1, \ - .enable_mask = MAX77686_OPMODE_MASK \ - << MAX77686_OPMODE_SHIFT, \ -} -#define regulator_desc_buck(num) { \ - .name = "BUCK"#num, \ - .id = MAX77686_BUCK##num, \ - .ops = &max77686_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .min_uV = MAX77686_BUCK_MINUV, \ - .uV_step = MAX77686_BUCK_UVSTEP, \ - .ramp_delay = MAX77686_RAMP_DELAY, \ - .n_voltages = MAX77686_VSEL_MASK + 1, \ - .vsel_reg = MAX77686_REG_BUCK5OUT + (num - 5) * 2, \ - .vsel_mask = MAX77686_VSEL_MASK, \ - .enable_reg = MAX77686_REG_BUCK5CTRL + (num - 5) * 2, \ - .enable_mask = MAX77686_OPMODE_MASK, \ -} -#define regulator_desc_buck1(num) { \ - .name = "BUCK"#num, \ - .id = MAX77686_BUCK##num, \ - .ops = &max77686_buck1_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .min_uV = MAX77686_BUCK_MINUV, \ - .uV_step = MAX77686_BUCK_UVSTEP, \ - .ramp_delay = MAX77686_RAMP_DELAY, \ - .n_voltages = MAX77686_VSEL_MASK + 1, \ - .vsel_reg = MAX77686_REG_BUCK1OUT, \ - .vsel_mask = MAX77686_VSEL_MASK, \ - .enable_reg = MAX77686_REG_BUCK1CTRL, \ - .enable_mask = MAX77686_OPMODE_MASK, \ -} -#define regulator_desc_buck_dvs(num) { \ - .name = "BUCK"#num, \ - .id = MAX77686_BUCK##num, \ - .ops = &max77686_buck_dvs_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ - .min_uV = MAX77686_DVS_MINUV, \ - .uV_step = MAX77686_DVS_UVSTEP, \ - .ramp_delay = MAX77686_DVS_RAMP_DELAY, \ - .n_voltages = MAX77686_DVS_VSEL_MASK + 1, \ - .vsel_reg = MAX77686_REG_BUCK2DVS1 + (num - 2) * 10, \ - .vsel_mask = MAX77686_DVS_VSEL_MASK, \ - .enable_reg = MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10, \ - .enable_mask = MAX77686_OPMODE_MASK \ - << MAX77686_OPMODE_BUCK234_SHIFT, \ -} - -static struct regulator_desc regulators[] = { - regulator_desc_ldo1_low(1), - regulator_desc_ldo_low(2), - regulator_desc_ldo(3), - regulator_desc_ldo(4), - regulator_desc_ldo(5), - regulator_desc_ldo_low(6), - regulator_desc_ldo_low(7), - regulator_desc_ldo_low(8), - regulator_desc_ldo(9), - regulator_desc_lpm_ldo(10), - regulator_desc_lpm_ldo(11), - regulator_desc_lpm_ldo(12), - regulator_desc_ldo(13), - regulator_desc_lpm_ldo(14), - regulator_desc_ldo_low(15), - regulator_desc_lpm_ldo(16), - regulator_desc_ldo(17), - regulator_desc_ldo(18), - regulator_desc_ldo(19), - regulator_desc_ldo(20), - regulator_desc_ldo(21), - regulator_desc_ldo(22), - regulator_desc_ldo(23), - regulator_desc_ldo(24), - regulator_desc_ldo(25), - regulator_desc_ldo(26), - regulator_desc_buck1(1), - regulator_desc_buck_dvs(2), - regulator_desc_buck_dvs(3), - regulator_desc_buck_dvs(4), - regulator_desc_buck(5), - regulator_desc_buck(6), - regulator_desc_buck(7), - regulator_desc_buck(8), - regulator_desc_buck(9), -}; - -#ifdef CONFIG_OF -static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev, - struct max77686_platform_data *pdata) -{ - struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct device_node *pmic_np, *regulators_np; - struct max77686_regulator_data *rdata; - struct of_regulator_match rmatch; - unsigned int i; - - pmic_np = iodev->dev->of_node; - regulators_np = of_find_node_by_name(pmic_np, "voltage-regulators"); - if (!regulators_np) { - dev_err(&pdev->dev, "could not find regulators sub-node\n"); - return -EINVAL; - } - - pdata->num_regulators = ARRAY_SIZE(regulators); - rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) * - pdata->num_regulators, GFP_KERNEL); - if (!rdata) { - dev_err(&pdev->dev, - "could not allocate memory for regulator data\n"); - return -ENOMEM; - } - - for (i = 0; i < pdata->num_regulators; i++) { - rmatch.name = regulators[i].name; - rmatch.init_data = NULL; - rmatch.of_node = NULL; - of_regulator_match(&pdev->dev, regulators_np, &rmatch, 1); - rdata[i].initdata = rmatch.init_data; - rdata[i].of_node = rmatch.of_node; - } - - pdata->regulators = rdata; - - return 0; -} -#else -static int max77686_pmic_dt_parse_pdata(struct platform_device *pdev, - struct max77686_platform_data *pdata) -{ - return 0; -} -#endif /* CONFIG_OF */ - -static int max77686_pmic_probe(struct platform_device *pdev) -{ - struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct max77686_platform_data *pdata = dev_get_platdata(iodev->dev); - struct max77686_data *max77686; - int i, ret = 0; - struct regulator_config config = { }; - - dev_dbg(&pdev->dev, "%s\n", __func__); - - if (!pdata) { - dev_err(&pdev->dev, "no platform data found for regulator\n"); - return -ENODEV; - } - - if (iodev->dev->of_node) { - ret = max77686_pmic_dt_parse_pdata(pdev, pdata); - if (ret) - return ret; - } - - if (pdata->num_regulators != MAX77686_REGULATORS) { - dev_err(&pdev->dev, - "Invalid initial data for regulator's initialiation\n"); - return -EINVAL; - } - - max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data), - GFP_KERNEL); - if (!max77686) - return -ENOMEM; - - config.dev = &pdev->dev; - config.regmap = iodev->regmap; - config.driver_data = max77686; - platform_set_drvdata(pdev, max77686); - - for (i = 0; i < MAX77686_REGULATORS; i++) { - config.init_data = pdata->regulators[i].initdata; - config.of_node = pdata->regulators[i].of_node; - - max77686->opmode[i] = regulators[i].enable_mask; - max77686->rdev[i] = regulator_register(®ulators[i], &config); - if (IS_ERR(max77686->rdev[i])) { - ret = PTR_ERR(max77686->rdev[i]); - dev_err(&pdev->dev, - "regulator init failed for %d\n", i); - max77686->rdev[i] = NULL; - goto err; - } - } - - return 0; -err: - while (--i >= 0) - regulator_unregister(max77686->rdev[i]); - return ret; -} - -static int max77686_pmic_remove(struct platform_device *pdev) -{ - struct max77686_data *max77686 = platform_get_drvdata(pdev); - int i; - - for (i = 0; i < MAX77686_REGULATORS; i++) - regulator_unregister(max77686->rdev[i]); - - return 0; -} - -static const struct platform_device_id max77686_pmic_id[] = { - {"max77686-pmic", 0}, - { }, -}; -MODULE_DEVICE_TABLE(platform, max77686_pmic_id); - -static struct platform_driver max77686_pmic_driver = { - .driver = { - .name = "max77686-pmic", - .owner = THIS_MODULE, - }, - .probe = max77686_pmic_probe, - .remove = max77686_pmic_remove, - .id_table = max77686_pmic_id, -}; - -static int __init max77686_pmic_init(void) -{ - return platform_driver_register(&max77686_pmic_driver); -} -subsys_initcall(max77686_pmic_init); - -static void __exit max77686_pmic_cleanup(void) -{ - platform_driver_unregister(&max77686_pmic_driver); -} -module_exit(max77686_pmic_cleanup); - -MODULE_DESCRIPTION("MAXIM 77686 Regulator Driver"); -MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>"); -MODULE_LICENSE("GPL"); |