| /* |
| * Regulators driver for Marvell 88PM8607 |
| * |
| * Copyright (C) 2009 Marvell International Ltd. |
| * Haojian Zhuang <haojian.zhuang@marvell.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 by the Free Software Foundation. |
| */ |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/i2c.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/mfd/88pm860x.h> |
| |
| struct pm8607_regulator_info { |
| struct regulator_desc desc; |
| struct pm860x_chip *chip; |
| struct regulator_dev *regulator; |
| struct i2c_client *i2c; |
| |
| unsigned int *vol_table; |
| unsigned int *vol_suspend; |
| |
| int vol_reg; |
| int vol_shift; |
| int vol_nbits; |
| int update_reg; |
| int update_bit; |
| int enable_reg; |
| int enable_bit; |
| int slope_double; |
| }; |
| |
| static const unsigned int BUCK1_table[] = { |
| 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000, |
| 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, |
| 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, |
| 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, |
| 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, |
| 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, |
| 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, |
| 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, |
| }; |
| |
| static const unsigned int BUCK1_suspend_table[] = { |
| 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, |
| 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, |
| 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, |
| 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, |
| 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, |
| 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, |
| 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, |
| 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, |
| }; |
| |
| static const unsigned int BUCK2_table[] = { |
| 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, |
| 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, |
| 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, |
| 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, |
| 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, |
| 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, |
| 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, |
| 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, |
| }; |
| |
| static const unsigned int BUCK2_suspend_table[] = { |
| 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, |
| 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, |
| 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, |
| 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, |
| 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, |
| 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, |
| 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, |
| 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, |
| }; |
| |
| static const unsigned int BUCK3_table[] = { |
| 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, |
| 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, |
| 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, |
| 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, |
| 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, |
| 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, |
| 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, |
| 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, |
| }; |
| |
| static const unsigned int BUCK3_suspend_table[] = { |
| 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, |
| 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, |
| 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, |
| 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, |
| 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, |
| 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, |
| 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, |
| 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, |
| }; |
| |
| static const unsigned int LDO1_table[] = { |
| 1800000, 1200000, 2800000, 0, |
| }; |
| |
| static const unsigned int LDO1_suspend_table[] = { |
| 1800000, 1200000, 0, 0, |
| }; |
| |
| static const unsigned int LDO2_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, |
| }; |
| |
| static const unsigned int LDO2_suspend_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| }; |
| |
| static const unsigned int LDO3_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, |
| }; |
| |
| static const unsigned int LDO3_suspend_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| }; |
| |
| static const unsigned int LDO4_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000, |
| }; |
| |
| static const unsigned int LDO4_suspend_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000, |
| }; |
| |
| static const unsigned int LDO5_table[] = { |
| 2900000, 3000000, 3100000, 3300000, |
| }; |
| |
| static const unsigned int LDO5_suspend_table[] = { |
| 2900000, 0, 0, 0, |
| }; |
| |
| static const unsigned int LDO6_table[] = { |
| 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000, |
| }; |
| |
| static const unsigned int LDO6_suspend_table[] = { |
| 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000, |
| }; |
| |
| static const unsigned int LDO7_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| }; |
| |
| static const unsigned int LDO7_suspend_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| }; |
| |
| static const unsigned int LDO8_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| }; |
| |
| static const unsigned int LDO8_suspend_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| }; |
| |
| static const unsigned int LDO9_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, |
| }; |
| |
| static const unsigned int LDO9_suspend_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| }; |
| |
| static const unsigned int LDO10_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, |
| 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, |
| }; |
| |
| static const unsigned int LDO10_suspend_table[] = { |
| 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, |
| 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, |
| }; |
| |
| static const unsigned int LDO12_table[] = { |
| 1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000, |
| 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, |
| }; |
| |
| static const unsigned int LDO12_suspend_table[] = { |
| 1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000, |
| 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, |
| }; |
| |
| static const unsigned int LDO13_table[] = { |
| 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 0, |
| }; |
| |
| static const unsigned int LDO13_suspend_table[] = { |
| 0, |
| }; |
| |
| static const unsigned int LDO14_table[] = { |
| 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000, |
| }; |
| |
| static const unsigned int LDO14_suspend_table[] = { |
| 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000, |
| }; |
| |
| static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index) |
| { |
| struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); |
| int ret = -EINVAL; |
| |
| if (info->vol_table && (index < (1 << info->vol_nbits))) { |
| ret = info->vol_table[index]; |
| if (info->slope_double) |
| ret <<= 1; |
| } |
| return ret; |
| } |
| |
| static int choose_voltage(struct regulator_dev *rdev, int min_uV, int max_uV) |
| { |
| struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); |
| int i, ret = -ENOENT; |
| |
| if (info->slope_double) { |
| min_uV = min_uV >> 1; |
| max_uV = max_uV >> 1; |
| } |
| if (info->vol_table) { |
| for (i = 0; i < (1 << info->vol_nbits); i++) { |
| if (!info->vol_table[i]) |
| break; |
| if ((min_uV <= info->vol_table[i]) |
| && (max_uV >= info->vol_table[i])) { |
| ret = i; |
| break; |
| } |
| } |
| } |
| if (ret < 0) |
| pr_err("invalid voltage range (%d %d) uV\n", min_uV, max_uV); |
| return ret; |
| } |
| |
| static int pm8607_set_voltage(struct regulator_dev *rdev, |
| int min_uV, int max_uV, unsigned *selector) |
| { |
| struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); |
| uint8_t val, mask; |
| int ret; |
| |
| if (min_uV > max_uV) { |
| pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); |
| return -EINVAL; |
| } |
| |
| ret = choose_voltage(rdev, min_uV, max_uV); |
| if (ret < 0) |
| return -EINVAL; |
| *selector = ret; |
| val = (uint8_t)(ret << info->vol_shift); |
| mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
| |
| ret = pm860x_set_bits(info->i2c, info->vol_reg, mask, val); |
| if (ret) |
| return ret; |
| switch (info->desc.id) { |
| case PM8607_ID_BUCK1: |
| case PM8607_ID_BUCK3: |
| ret = pm860x_set_bits(info->i2c, info->update_reg, |
| 1 << info->update_bit, |
| 1 << info->update_bit); |
| break; |
| } |
| return ret; |
| } |
| |
| static int pm8607_get_voltage(struct regulator_dev *rdev) |
| { |
| struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); |
| uint8_t val, mask; |
| int ret; |
| |
| ret = pm860x_reg_read(info->i2c, info->vol_reg); |
| if (ret < 0) |
| return ret; |
| |
| mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
| val = ((unsigned char)ret & mask) >> info->vol_shift; |
| |
| return pm8607_list_voltage(rdev, val); |
| } |
| |
| static int pm8607_enable(struct regulator_dev *rdev) |
| { |
| struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| return pm860x_set_bits(info->i2c, info->enable_reg, |
| 1 << info->enable_bit, |
| 1 << info->enable_bit); |
| } |
| |
| static int pm8607_disable(struct regulator_dev *rdev) |
| { |
| struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| return pm860x_set_bits(info->i2c, info->enable_reg, |
| 1 << info->enable_bit, 0); |
| } |
| |
| static int pm8607_is_enabled(struct regulator_dev *rdev) |
| { |
| struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); |
| int ret; |
| |
| ret = pm860x_reg_read(info->i2c, info->enable_reg); |
| if (ret < 0) |
| return ret; |
| |
| return !!((unsigned char)ret & (1 << info->enable_bit)); |
| } |
| |
| static struct regulator_ops pm8607_regulator_ops = { |
| .set_voltage = pm8607_set_voltage, |
| .get_voltage = pm8607_get_voltage, |
| .enable = pm8607_enable, |
| .disable = pm8607_disable, |
| .is_enabled = pm8607_is_enabled, |
| }; |
| |
| #define PM8607_DVC(vreg, nbits, ureg, ubit, ereg, ebit) \ |
| { \ |
| .desc = { \ |
| .name = #vreg, \ |
| .ops = &pm8607_regulator_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = PM8607_ID_##vreg, \ |
| .owner = THIS_MODULE, \ |
| }, \ |
| .vol_reg = PM8607_##vreg, \ |
| .vol_shift = (0), \ |
| .vol_nbits = (nbits), \ |
| .update_reg = PM8607_##ureg, \ |
| .update_bit = (ubit), \ |
| .enable_reg = PM8607_##ereg, \ |
| .enable_bit = (ebit), \ |
| .slope_double = (0), \ |
| .vol_table = (unsigned int *)&vreg##_table, \ |
| .vol_suspend = (unsigned int *)&vreg##_suspend_table, \ |
| } |
| |
| #define PM8607_LDO(_id, vreg, shift, nbits, ereg, ebit) \ |
| { \ |
| .desc = { \ |
| .name = "LDO" #_id, \ |
| .ops = &pm8607_regulator_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = PM8607_ID_LDO##_id, \ |
| .owner = THIS_MODULE, \ |
| }, \ |
| .vol_reg = PM8607_##vreg, \ |
| .vol_shift = (shift), \ |
| .vol_nbits = (nbits), \ |
| .enable_reg = PM8607_##ereg, \ |
| .enable_bit = (ebit), \ |
| .slope_double = (0), \ |
| .vol_table = (unsigned int *)&LDO##_id##_table, \ |
| .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \ |
| } |
| |
| static struct pm8607_regulator_info pm8607_regulator_info[] = { |
| PM8607_DVC(BUCK1, 6, GO, 0, SUPPLIES_EN11, 0), |
| PM8607_DVC(BUCK2, 6, GO, 1, SUPPLIES_EN11, 1), |
| PM8607_DVC(BUCK3, 6, GO, 2, SUPPLIES_EN11, 2), |
| |
| PM8607_LDO( 1, LDO1, 0, 2, SUPPLIES_EN11, 3), |
| PM8607_LDO( 2, LDO2, 0, 3, SUPPLIES_EN11, 4), |
| PM8607_LDO( 3, LDO3, 0, 3, SUPPLIES_EN11, 5), |
| PM8607_LDO( 4, LDO4, 0, 3, SUPPLIES_EN11, 6), |
| PM8607_LDO( 5, LDO5, 0, 2, SUPPLIES_EN11, 7), |
| PM8607_LDO( 6, LDO6, 0, 3, SUPPLIES_EN12, 0), |
| PM8607_LDO( 7, LDO7, 0, 3, SUPPLIES_EN12, 1), |
| PM8607_LDO( 8, LDO8, 0, 3, SUPPLIES_EN12, 2), |
| PM8607_LDO( 9, LDO9, 0, 3, SUPPLIES_EN12, 3), |
| PM8607_LDO(10, LDO10, 0, 3, SUPPLIES_EN12, 4), |
| PM8607_LDO(12, LDO12, 0, 4, SUPPLIES_EN12, 5), |
| PM8607_LDO(13, VIBRATOR_SET, 1, 3, VIBRATOR_SET, 0), |
| PM8607_LDO(14, LDO14, 0, 4, SUPPLIES_EN12, 6), |
| }; |
| |
| static int __devinit pm8607_regulator_probe(struct platform_device *pdev) |
| { |
| struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); |
| struct pm8607_regulator_info *info = NULL; |
| struct regulator_init_data *pdata = pdev->dev.platform_data; |
| struct resource *res; |
| int i; |
| |
| res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
| if (res == NULL) { |
| dev_err(&pdev->dev, "No I/O resource!\n"); |
| return -EINVAL; |
| } |
| for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) { |
| info = &pm8607_regulator_info[i]; |
| if (info->desc.id == res->start) |
| break; |
| } |
| if ((i < 0) || (i > PM8607_ID_RG_MAX)) { |
| dev_err(&pdev->dev, "Failed to find regulator %llu\n", |
| (unsigned long long)res->start); |
| return -EINVAL; |
| } |
| info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; |
| info->chip = chip; |
| |
| /* check DVC ramp slope double */ |
| if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double) |
| info->slope_double = 1; |
| |
| /* replace driver_data with info */ |
| info->regulator = regulator_register(&info->desc, &pdev->dev, |
| pdata, info); |
| if (IS_ERR(info->regulator)) { |
| dev_err(&pdev->dev, "failed to register regulator %s\n", |
| info->desc.name); |
| return PTR_ERR(info->regulator); |
| } |
| |
| platform_set_drvdata(pdev, info); |
| return 0; |
| } |
| |
| static int __devexit pm8607_regulator_remove(struct platform_device *pdev) |
| { |
| struct pm8607_regulator_info *info = platform_get_drvdata(pdev); |
| |
| platform_set_drvdata(pdev, NULL); |
| regulator_unregister(info->regulator); |
| return 0; |
| } |
| |
| static struct platform_driver pm8607_regulator_driver = { |
| .driver = { |
| .name = "88pm860x-regulator", |
| .owner = THIS_MODULE, |
| }, |
| .probe = pm8607_regulator_probe, |
| .remove = __devexit_p(pm8607_regulator_remove), |
| }; |
| |
| static int __init pm8607_regulator_init(void) |
| { |
| return platform_driver_register(&pm8607_regulator_driver); |
| } |
| subsys_initcall(pm8607_regulator_init); |
| |
| static void __exit pm8607_regulator_exit(void) |
| { |
| platform_driver_unregister(&pm8607_regulator_driver); |
| } |
| module_exit(pm8607_regulator_exit); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>"); |
| MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC"); |
| MODULE_ALIAS("platform:88pm8607-regulator"); |