| /* |
| * tps65910.c -- TI tps65910 |
| * |
| * Copyright 2010 Texas Instruments Inc. |
| * |
| * Author: Graeme Gregory <gg@slimlogic.co.uk> |
| * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk> |
| * |
| * 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/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/delay.h> |
| #include <linux/slab.h> |
| #include <linux/gpio.h> |
| #include <linux/mfd/tps65910.h> |
| |
| #define TPS65910_SUPPLY_STATE_ENABLED 0x1 |
| #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 | \ |
| TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 | \ |
| TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 | \ |
| TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) |
| |
| /* supported VIO voltages in milivolts */ |
| static const u16 VIO_VSEL_table[] = { |
| 1500, 1800, 2500, 3300, |
| }; |
| |
| /* VSEL tables for TPS65910 specific LDOs and dcdc's */ |
| |
| /* supported VDD3 voltages in milivolts */ |
| static const u16 VDD3_VSEL_table[] = { |
| 5000, |
| }; |
| |
| /* supported VDIG1 voltages in milivolts */ |
| static const u16 VDIG1_VSEL_table[] = { |
| 1200, 1500, 1800, 2700, |
| }; |
| |
| /* supported VDIG2 voltages in milivolts */ |
| static const u16 VDIG2_VSEL_table[] = { |
| 1000, 1100, 1200, 1800, |
| }; |
| |
| /* supported VPLL voltages in milivolts */ |
| static const u16 VPLL_VSEL_table[] = { |
| 1000, 1100, 1800, 2500, |
| }; |
| |
| /* supported VDAC voltages in milivolts */ |
| static const u16 VDAC_VSEL_table[] = { |
| 1800, 2600, 2800, 2850, |
| }; |
| |
| /* supported VAUX1 voltages in milivolts */ |
| static const u16 VAUX1_VSEL_table[] = { |
| 1800, 2500, 2800, 2850, |
| }; |
| |
| /* supported VAUX2 voltages in milivolts */ |
| static const u16 VAUX2_VSEL_table[] = { |
| 1800, 2800, 2900, 3300, |
| }; |
| |
| /* supported VAUX33 voltages in milivolts */ |
| static const u16 VAUX33_VSEL_table[] = { |
| 1800, 2000, 2800, 3300, |
| }; |
| |
| /* supported VMMC voltages in milivolts */ |
| static const u16 VMMC_VSEL_table[] = { |
| 1800, 2800, 3000, 3300, |
| }; |
| |
| struct tps_info { |
| const char *name; |
| unsigned min_uV; |
| unsigned max_uV; |
| u8 n_voltages; |
| const u16 *voltage_table; |
| }; |
| |
| static struct tps_info tps65910_regs[] = { |
| { |
| .name = "VRTC", |
| }, |
| { |
| .name = "VIO", |
| .min_uV = 1500000, |
| .max_uV = 3300000, |
| .n_voltages = ARRAY_SIZE(VIO_VSEL_table), |
| .voltage_table = VIO_VSEL_table, |
| }, |
| { |
| .name = "VDD1", |
| .min_uV = 600000, |
| .max_uV = 4500000, |
| }, |
| { |
| .name = "VDD2", |
| .min_uV = 600000, |
| .max_uV = 4500000, |
| }, |
| { |
| .name = "VDD3", |
| .min_uV = 5000000, |
| .max_uV = 5000000, |
| .n_voltages = ARRAY_SIZE(VDD3_VSEL_table), |
| .voltage_table = VDD3_VSEL_table, |
| }, |
| { |
| .name = "VDIG1", |
| .min_uV = 1200000, |
| .max_uV = 2700000, |
| .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table), |
| .voltage_table = VDIG1_VSEL_table, |
| }, |
| { |
| .name = "VDIG2", |
| .min_uV = 1000000, |
| .max_uV = 1800000, |
| .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table), |
| .voltage_table = VDIG2_VSEL_table, |
| }, |
| { |
| .name = "VPLL", |
| .min_uV = 1000000, |
| .max_uV = 2500000, |
| .n_voltages = ARRAY_SIZE(VPLL_VSEL_table), |
| .voltage_table = VPLL_VSEL_table, |
| }, |
| { |
| .name = "VDAC", |
| .min_uV = 1800000, |
| .max_uV = 2850000, |
| .n_voltages = ARRAY_SIZE(VDAC_VSEL_table), |
| .voltage_table = VDAC_VSEL_table, |
| }, |
| { |
| .name = "VAUX1", |
| .min_uV = 1800000, |
| .max_uV = 2850000, |
| .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table), |
| .voltage_table = VAUX1_VSEL_table, |
| }, |
| { |
| .name = "VAUX2", |
| .min_uV = 1800000, |
| .max_uV = 3300000, |
| .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table), |
| .voltage_table = VAUX2_VSEL_table, |
| }, |
| { |
| .name = "VAUX33", |
| .min_uV = 1800000, |
| .max_uV = 3300000, |
| .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table), |
| .voltage_table = VAUX33_VSEL_table, |
| }, |
| { |
| .name = "VMMC", |
| .min_uV = 1800000, |
| .max_uV = 3300000, |
| .n_voltages = ARRAY_SIZE(VMMC_VSEL_table), |
| .voltage_table = VMMC_VSEL_table, |
| }, |
| }; |
| |
| static struct tps_info tps65911_regs[] = { |
| { |
| .name = "VRTC", |
| }, |
| { |
| .name = "VIO", |
| .min_uV = 1500000, |
| .max_uV = 3300000, |
| .n_voltages = ARRAY_SIZE(VIO_VSEL_table), |
| .voltage_table = VIO_VSEL_table, |
| }, |
| { |
| .name = "VDD1", |
| .min_uV = 600000, |
| .max_uV = 4500000, |
| .n_voltages = 73, |
| }, |
| { |
| .name = "VDD2", |
| .min_uV = 600000, |
| .max_uV = 4500000, |
| .n_voltages = 73, |
| }, |
| { |
| .name = "VDDCTRL", |
| .min_uV = 600000, |
| .max_uV = 1400000, |
| .n_voltages = 65, |
| }, |
| { |
| .name = "LDO1", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 47, |
| }, |
| { |
| .name = "LDO2", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 47, |
| }, |
| { |
| .name = "LDO3", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 24, |
| }, |
| { |
| .name = "LDO4", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 47, |
| }, |
| { |
| .name = "LDO5", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 24, |
| }, |
| { |
| .name = "LDO6", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 24, |
| }, |
| { |
| .name = "LDO7", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 24, |
| }, |
| { |
| .name = "LDO8", |
| .min_uV = 1000000, |
| .max_uV = 3300000, |
| .n_voltages = 24, |
| }, |
| }; |
| |
| #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits)) |
| static unsigned int tps65910_ext_sleep_control[] = { |
| 0, |
| EXT_CONTROL_REG_BITS(VIO, 1, 0), |
| EXT_CONTROL_REG_BITS(VDD1, 1, 1), |
| EXT_CONTROL_REG_BITS(VDD2, 1, 2), |
| EXT_CONTROL_REG_BITS(VDD3, 1, 3), |
| EXT_CONTROL_REG_BITS(VDIG1, 0, 1), |
| EXT_CONTROL_REG_BITS(VDIG2, 0, 2), |
| EXT_CONTROL_REG_BITS(VPLL, 0, 6), |
| EXT_CONTROL_REG_BITS(VDAC, 0, 7), |
| EXT_CONTROL_REG_BITS(VAUX1, 0, 3), |
| EXT_CONTROL_REG_BITS(VAUX2, 0, 4), |
| EXT_CONTROL_REG_BITS(VAUX33, 0, 5), |
| EXT_CONTROL_REG_BITS(VMMC, 0, 0), |
| }; |
| |
| static unsigned int tps65911_ext_sleep_control[] = { |
| 0, |
| EXT_CONTROL_REG_BITS(VIO, 1, 0), |
| EXT_CONTROL_REG_BITS(VDD1, 1, 1), |
| EXT_CONTROL_REG_BITS(VDD2, 1, 2), |
| EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3), |
| EXT_CONTROL_REG_BITS(LDO1, 0, 1), |
| EXT_CONTROL_REG_BITS(LDO2, 0, 2), |
| EXT_CONTROL_REG_BITS(LDO3, 0, 7), |
| EXT_CONTROL_REG_BITS(LDO4, 0, 6), |
| EXT_CONTROL_REG_BITS(LDO5, 0, 3), |
| EXT_CONTROL_REG_BITS(LDO6, 0, 0), |
| EXT_CONTROL_REG_BITS(LDO7, 0, 5), |
| EXT_CONTROL_REG_BITS(LDO8, 0, 4), |
| }; |
| |
| struct tps65910_reg { |
| struct regulator_desc *desc; |
| struct tps65910 *mfd; |
| struct regulator_dev **rdev; |
| struct tps_info **info; |
| struct mutex mutex; |
| int num_regulators; |
| int mode; |
| int (*get_ctrl_reg)(int); |
| unsigned int *ext_sleep_control; |
| unsigned int board_ext_control[TPS65910_NUM_REGS]; |
| }; |
| |
| static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg) |
| { |
| u8 val; |
| int err; |
| |
| err = pmic->mfd->read(pmic->mfd, reg, 1, &val); |
| if (err) |
| return err; |
| |
| return val; |
| } |
| |
| static inline int tps65910_write(struct tps65910_reg *pmic, u8 reg, u8 val) |
| { |
| return pmic->mfd->write(pmic->mfd, reg, 1, &val); |
| } |
| |
| static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg, |
| u8 set_mask, u8 clear_mask) |
| { |
| int err, data; |
| |
| mutex_lock(&pmic->mutex); |
| |
| data = tps65910_read(pmic, reg); |
| if (data < 0) { |
| dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg); |
| err = data; |
| goto out; |
| } |
| |
| data &= ~clear_mask; |
| data |= set_mask; |
| err = tps65910_write(pmic, reg, data); |
| if (err) |
| dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg); |
| |
| out: |
| mutex_unlock(&pmic->mutex); |
| return err; |
| } |
| |
| static int tps65910_reg_read(struct tps65910_reg *pmic, u8 reg) |
| { |
| int data; |
| |
| mutex_lock(&pmic->mutex); |
| |
| data = tps65910_read(pmic, reg); |
| if (data < 0) |
| dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg); |
| |
| mutex_unlock(&pmic->mutex); |
| return data; |
| } |
| |
| static int tps65910_reg_write(struct tps65910_reg *pmic, u8 reg, u8 val) |
| { |
| int err; |
| |
| mutex_lock(&pmic->mutex); |
| |
| err = tps65910_write(pmic, reg, val); |
| if (err < 0) |
| dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg); |
| |
| mutex_unlock(&pmic->mutex); |
| return err; |
| } |
| |
| static int tps65910_get_ctrl_register(int id) |
| { |
| switch (id) { |
| case TPS65910_REG_VRTC: |
| return TPS65910_VRTC; |
| case TPS65910_REG_VIO: |
| return TPS65910_VIO; |
| case TPS65910_REG_VDD1: |
| return TPS65910_VDD1; |
| case TPS65910_REG_VDD2: |
| return TPS65910_VDD2; |
| case TPS65910_REG_VDD3: |
| return TPS65910_VDD3; |
| case TPS65910_REG_VDIG1: |
| return TPS65910_VDIG1; |
| case TPS65910_REG_VDIG2: |
| return TPS65910_VDIG2; |
| case TPS65910_REG_VPLL: |
| return TPS65910_VPLL; |
| case TPS65910_REG_VDAC: |
| return TPS65910_VDAC; |
| case TPS65910_REG_VAUX1: |
| return TPS65910_VAUX1; |
| case TPS65910_REG_VAUX2: |
| return TPS65910_VAUX2; |
| case TPS65910_REG_VAUX33: |
| return TPS65910_VAUX33; |
| case TPS65910_REG_VMMC: |
| return TPS65910_VMMC; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int tps65911_get_ctrl_register(int id) |
| { |
| switch (id) { |
| case TPS65910_REG_VRTC: |
| return TPS65910_VRTC; |
| case TPS65910_REG_VIO: |
| return TPS65910_VIO; |
| case TPS65910_REG_VDD1: |
| return TPS65910_VDD1; |
| case TPS65910_REG_VDD2: |
| return TPS65910_VDD2; |
| case TPS65911_REG_VDDCTRL: |
| return TPS65911_VDDCTRL; |
| case TPS65911_REG_LDO1: |
| return TPS65911_LDO1; |
| case TPS65911_REG_LDO2: |
| return TPS65911_LDO2; |
| case TPS65911_REG_LDO3: |
| return TPS65911_LDO3; |
| case TPS65911_REG_LDO4: |
| return TPS65911_LDO4; |
| case TPS65911_REG_LDO5: |
| return TPS65911_LDO5; |
| case TPS65911_REG_LDO6: |
| return TPS65911_LDO6; |
| case TPS65911_REG_LDO7: |
| return TPS65911_LDO7; |
| case TPS65911_REG_LDO8: |
| return TPS65911_LDO8; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int tps65910_is_enabled(struct regulator_dev *dev) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int reg, value, id = rdev_get_id(dev); |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| value = tps65910_reg_read(pmic, reg); |
| if (value < 0) |
| return value; |
| |
| return value & TPS65910_SUPPLY_STATE_ENABLED; |
| } |
| |
| static int tps65910_enable(struct regulator_dev *dev) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| struct tps65910 *mfd = pmic->mfd; |
| int reg, id = rdev_get_id(dev); |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| return tps65910_set_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED); |
| } |
| |
| static int tps65910_disable(struct regulator_dev *dev) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| struct tps65910 *mfd = pmic->mfd; |
| int reg, id = rdev_get_id(dev); |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| return tps65910_clear_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED); |
| } |
| |
| |
| static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| struct tps65910 *mfd = pmic->mfd; |
| int reg, value, id = rdev_get_id(dev); |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| switch (mode) { |
| case REGULATOR_MODE_NORMAL: |
| return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT, |
| LDO_ST_MODE_BIT); |
| case REGULATOR_MODE_IDLE: |
| value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT; |
| return tps65910_set_bits(mfd, reg, value); |
| case REGULATOR_MODE_STANDBY: |
| return tps65910_clear_bits(mfd, reg, LDO_ST_ON_BIT); |
| } |
| |
| return -EINVAL; |
| } |
| |
| static unsigned int tps65910_get_mode(struct regulator_dev *dev) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int reg, value, id = rdev_get_id(dev); |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| value = tps65910_reg_read(pmic, reg); |
| if (value < 0) |
| return value; |
| |
| if (value & LDO_ST_ON_BIT) |
| return REGULATOR_MODE_STANDBY; |
| else if (value & LDO_ST_MODE_BIT) |
| return REGULATOR_MODE_IDLE; |
| else |
| return REGULATOR_MODE_NORMAL; |
| } |
| |
| static int tps65910_get_voltage_dcdc(struct regulator_dev *dev) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int id = rdev_get_id(dev), voltage = 0; |
| int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0; |
| |
| switch (id) { |
| case TPS65910_REG_VDD1: |
| opvsel = tps65910_reg_read(pmic, TPS65910_VDD1_OP); |
| mult = tps65910_reg_read(pmic, TPS65910_VDD1); |
| mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT; |
| srvsel = tps65910_reg_read(pmic, TPS65910_VDD1_SR); |
| sr = opvsel & VDD1_OP_CMD_MASK; |
| opvsel &= VDD1_OP_SEL_MASK; |
| srvsel &= VDD1_SR_SEL_MASK; |
| vselmax = 75; |
| break; |
| case TPS65910_REG_VDD2: |
| opvsel = tps65910_reg_read(pmic, TPS65910_VDD2_OP); |
| mult = tps65910_reg_read(pmic, TPS65910_VDD2); |
| mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT; |
| srvsel = tps65910_reg_read(pmic, TPS65910_VDD2_SR); |
| sr = opvsel & VDD2_OP_CMD_MASK; |
| opvsel &= VDD2_OP_SEL_MASK; |
| srvsel &= VDD2_SR_SEL_MASK; |
| vselmax = 75; |
| break; |
| case TPS65911_REG_VDDCTRL: |
| opvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_OP); |
| srvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_SR); |
| sr = opvsel & VDDCTRL_OP_CMD_MASK; |
| opvsel &= VDDCTRL_OP_SEL_MASK; |
| srvsel &= VDDCTRL_SR_SEL_MASK; |
| vselmax = 64; |
| break; |
| } |
| |
| /* multiplier 0 == 1 but 2,3 normal */ |
| if (!mult) |
| mult=1; |
| |
| if (sr) { |
| /* normalise to valid range */ |
| if (srvsel < 3) |
| srvsel = 3; |
| if (srvsel > vselmax) |
| srvsel = vselmax; |
| srvsel -= 3; |
| |
| voltage = (srvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100; |
| } else { |
| |
| /* normalise to valid range*/ |
| if (opvsel < 3) |
| opvsel = 3; |
| if (opvsel > vselmax) |
| opvsel = vselmax; |
| opvsel -= 3; |
| |
| voltage = (opvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100; |
| } |
| |
| voltage *= mult; |
| |
| return voltage; |
| } |
| |
| static int tps65910_get_voltage(struct regulator_dev *dev) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int reg, value, id = rdev_get_id(dev), voltage = 0; |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| value = tps65910_reg_read(pmic, reg); |
| if (value < 0) |
| return value; |
| |
| switch (id) { |
| case TPS65910_REG_VIO: |
| case TPS65910_REG_VDIG1: |
| case TPS65910_REG_VDIG2: |
| case TPS65910_REG_VPLL: |
| case TPS65910_REG_VDAC: |
| case TPS65910_REG_VAUX1: |
| case TPS65910_REG_VAUX2: |
| case TPS65910_REG_VAUX33: |
| case TPS65910_REG_VMMC: |
| value &= LDO_SEL_MASK; |
| value >>= LDO_SEL_SHIFT; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| voltage = pmic->info[id]->voltage_table[value] * 1000; |
| |
| return voltage; |
| } |
| |
| static int tps65910_get_voltage_vdd3(struct regulator_dev *dev) |
| { |
| return 5 * 1000 * 1000; |
| } |
| |
| static int tps65911_get_voltage(struct regulator_dev *dev) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int step_mv, id = rdev_get_id(dev); |
| u8 value, reg; |
| |
| reg = pmic->get_ctrl_reg(id); |
| |
| value = tps65910_reg_read(pmic, reg); |
| |
| switch (id) { |
| case TPS65911_REG_LDO1: |
| case TPS65911_REG_LDO2: |
| case TPS65911_REG_LDO4: |
| value &= LDO1_SEL_MASK; |
| value >>= LDO_SEL_SHIFT; |
| /* The first 5 values of the selector correspond to 1V */ |
| if (value < 5) |
| value = 0; |
| else |
| value -= 4; |
| |
| step_mv = 50; |
| break; |
| case TPS65911_REG_LDO3: |
| case TPS65911_REG_LDO5: |
| case TPS65911_REG_LDO6: |
| case TPS65911_REG_LDO7: |
| case TPS65911_REG_LDO8: |
| value &= LDO3_SEL_MASK; |
| value >>= LDO_SEL_SHIFT; |
| /* The first 3 values of the selector correspond to 1V */ |
| if (value < 3) |
| value = 0; |
| else |
| value -= 2; |
| |
| step_mv = 100; |
| break; |
| case TPS65910_REG_VIO: |
| value &= LDO_SEL_MASK; |
| value >>= LDO_SEL_SHIFT; |
| return pmic->info[id]->voltage_table[value] * 1000; |
| default: |
| return -EINVAL; |
| } |
| |
| return (LDO_MIN_VOLT + value * step_mv) * 1000; |
| } |
| |
| static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev, |
| unsigned selector) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int id = rdev_get_id(dev), vsel; |
| int dcdc_mult = 0; |
| |
| switch (id) { |
| case TPS65910_REG_VDD1: |
| dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; |
| if (dcdc_mult == 1) |
| dcdc_mult--; |
| vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; |
| |
| tps65910_modify_bits(pmic, TPS65910_VDD1, |
| (dcdc_mult << VDD1_VGAIN_SEL_SHIFT), |
| VDD1_VGAIN_SEL_MASK); |
| tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel); |
| break; |
| case TPS65910_REG_VDD2: |
| dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; |
| if (dcdc_mult == 1) |
| dcdc_mult--; |
| vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; |
| |
| tps65910_modify_bits(pmic, TPS65910_VDD2, |
| (dcdc_mult << VDD2_VGAIN_SEL_SHIFT), |
| VDD1_VGAIN_SEL_MASK); |
| tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel); |
| break; |
| case TPS65911_REG_VDDCTRL: |
| vsel = selector; |
| tps65910_reg_write(pmic, TPS65911_VDDCTRL_OP, vsel); |
| } |
| |
| return 0; |
| } |
| |
| static int tps65910_set_voltage_sel(struct regulator_dev *dev, |
| unsigned selector) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int reg, id = rdev_get_id(dev); |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| switch (id) { |
| case TPS65910_REG_VIO: |
| case TPS65910_REG_VDIG1: |
| case TPS65910_REG_VDIG2: |
| case TPS65910_REG_VPLL: |
| case TPS65910_REG_VDAC: |
| case TPS65910_REG_VAUX1: |
| case TPS65910_REG_VAUX2: |
| case TPS65910_REG_VAUX33: |
| case TPS65910_REG_VMMC: |
| return tps65910_modify_bits(pmic, reg, |
| (selector << LDO_SEL_SHIFT), LDO_SEL_MASK); |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int tps65911_set_voltage_sel(struct regulator_dev *dev, |
| unsigned selector) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int reg, id = rdev_get_id(dev); |
| |
| reg = pmic->get_ctrl_reg(id); |
| if (reg < 0) |
| return reg; |
| |
| switch (id) { |
| case TPS65911_REG_LDO1: |
| case TPS65911_REG_LDO2: |
| case TPS65911_REG_LDO4: |
| return tps65910_modify_bits(pmic, reg, |
| (selector << LDO_SEL_SHIFT), LDO1_SEL_MASK); |
| case TPS65911_REG_LDO3: |
| case TPS65911_REG_LDO5: |
| case TPS65911_REG_LDO6: |
| case TPS65911_REG_LDO7: |
| case TPS65911_REG_LDO8: |
| return tps65910_modify_bits(pmic, reg, |
| (selector << LDO_SEL_SHIFT), LDO3_SEL_MASK); |
| case TPS65910_REG_VIO: |
| return tps65910_modify_bits(pmic, reg, |
| (selector << LDO_SEL_SHIFT), LDO_SEL_MASK); |
| } |
| |
| return -EINVAL; |
| } |
| |
| |
| static int tps65910_list_voltage_dcdc(struct regulator_dev *dev, |
| unsigned selector) |
| { |
| int volt, mult = 1, id = rdev_get_id(dev); |
| |
| switch (id) { |
| case TPS65910_REG_VDD1: |
| case TPS65910_REG_VDD2: |
| mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; |
| volt = VDD1_2_MIN_VOLT + |
| (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET; |
| break; |
| case TPS65911_REG_VDDCTRL: |
| volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET); |
| break; |
| default: |
| BUG(); |
| return -EINVAL; |
| } |
| |
| return volt * 100 * mult; |
| } |
| |
| static int tps65910_list_voltage(struct regulator_dev *dev, |
| unsigned selector) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int id = rdev_get_id(dev), voltage; |
| |
| if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC) |
| return -EINVAL; |
| |
| if (selector >= pmic->info[id]->n_voltages) |
| return -EINVAL; |
| else |
| voltage = pmic->info[id]->voltage_table[selector] * 1000; |
| |
| return voltage; |
| } |
| |
| static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector) |
| { |
| struct tps65910_reg *pmic = rdev_get_drvdata(dev); |
| int step_mv = 0, id = rdev_get_id(dev); |
| |
| switch(id) { |
| case TPS65911_REG_LDO1: |
| case TPS65911_REG_LDO2: |
| case TPS65911_REG_LDO4: |
| /* The first 5 values of the selector correspond to 1V */ |
| if (selector < 5) |
| selector = 0; |
| else |
| selector -= 4; |
| |
| step_mv = 50; |
| break; |
| case TPS65911_REG_LDO3: |
| case TPS65911_REG_LDO5: |
| case TPS65911_REG_LDO6: |
| case TPS65911_REG_LDO7: |
| case TPS65911_REG_LDO8: |
| /* The first 3 values of the selector correspond to 1V */ |
| if (selector < 3) |
| selector = 0; |
| else |
| selector -= 2; |
| |
| step_mv = 100; |
| break; |
| case TPS65910_REG_VIO: |
| return pmic->info[id]->voltage_table[selector] * 1000; |
| default: |
| return -EINVAL; |
| } |
| |
| return (LDO_MIN_VOLT + selector * step_mv) * 1000; |
| } |
| |
| /* Regulator ops (except VRTC) */ |
| static struct regulator_ops tps65910_ops_dcdc = { |
| .is_enabled = tps65910_is_enabled, |
| .enable = tps65910_enable, |
| .disable = tps65910_disable, |
| .set_mode = tps65910_set_mode, |
| .get_mode = tps65910_get_mode, |
| .get_voltage = tps65910_get_voltage_dcdc, |
| .set_voltage_sel = tps65910_set_voltage_dcdc_sel, |
| .list_voltage = tps65910_list_voltage_dcdc, |
| }; |
| |
| static struct regulator_ops tps65910_ops_vdd3 = { |
| .is_enabled = tps65910_is_enabled, |
| .enable = tps65910_enable, |
| .disable = tps65910_disable, |
| .set_mode = tps65910_set_mode, |
| .get_mode = tps65910_get_mode, |
| .get_voltage = tps65910_get_voltage_vdd3, |
| .list_voltage = tps65910_list_voltage, |
| }; |
| |
| static struct regulator_ops tps65910_ops = { |
| .is_enabled = tps65910_is_enabled, |
| .enable = tps65910_enable, |
| .disable = tps65910_disable, |
| .set_mode = tps65910_set_mode, |
| .get_mode = tps65910_get_mode, |
| .get_voltage = tps65910_get_voltage, |
| .set_voltage_sel = tps65910_set_voltage_sel, |
| .list_voltage = tps65910_list_voltage, |
| }; |
| |
| static struct regulator_ops tps65911_ops = { |
| .is_enabled = tps65910_is_enabled, |
| .enable = tps65910_enable, |
| .disable = tps65910_disable, |
| .set_mode = tps65910_set_mode, |
| .get_mode = tps65910_get_mode, |
| .get_voltage = tps65911_get_voltage, |
| .set_voltage_sel = tps65911_set_voltage_sel, |
| .list_voltage = tps65911_list_voltage, |
| }; |
| |
| static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic, |
| int id, int ext_sleep_config) |
| { |
| struct tps65910 *mfd = pmic->mfd; |
| u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF; |
| u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF); |
| int ret; |
| |
| /* |
| * Regulator can not be control from multiple external input EN1, EN2 |
| * and EN3 together. |
| */ |
| if (ext_sleep_config & EXT_SLEEP_CONTROL) { |
| int en_count; |
| en_count = ((ext_sleep_config & |
| TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0); |
| en_count += ((ext_sleep_config & |
| TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0); |
| en_count += ((ext_sleep_config & |
| TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0); |
| en_count += ((ext_sleep_config & |
| TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0); |
| if (en_count > 1) { |
| dev_err(mfd->dev, |
| "External sleep control flag is not proper\n"); |
| return -EINVAL; |
| } |
| } |
| |
| pmic->board_ext_control[id] = ext_sleep_config; |
| |
| /* External EN1 control */ |
| if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) |
| ret = tps65910_set_bits(mfd, |
| TPS65910_EN1_LDO_ASS + regoffs, bit_pos); |
| else |
| ret = tps65910_clear_bits(mfd, |
| TPS65910_EN1_LDO_ASS + regoffs, bit_pos); |
| if (ret < 0) { |
| dev_err(mfd->dev, |
| "Error in configuring external control EN1\n"); |
| return ret; |
| } |
| |
| /* External EN2 control */ |
| if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) |
| ret = tps65910_set_bits(mfd, |
| TPS65910_EN2_LDO_ASS + regoffs, bit_pos); |
| else |
| ret = tps65910_clear_bits(mfd, |
| TPS65910_EN2_LDO_ASS + regoffs, bit_pos); |
| if (ret < 0) { |
| dev_err(mfd->dev, |
| "Error in configuring external control EN2\n"); |
| return ret; |
| } |
| |
| /* External EN3 control for TPS65910 LDO only */ |
| if ((tps65910_chip_id(mfd) == TPS65910) && |
| (id >= TPS65910_REG_VDIG1)) { |
| if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) |
| ret = tps65910_set_bits(mfd, |
| TPS65910_EN3_LDO_ASS + regoffs, bit_pos); |
| else |
| ret = tps65910_clear_bits(mfd, |
| TPS65910_EN3_LDO_ASS + regoffs, bit_pos); |
| if (ret < 0) { |
| dev_err(mfd->dev, |
| "Error in configuring external control EN3\n"); |
| return ret; |
| } |
| } |
| |
| /* Return if no external control is selected */ |
| if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) { |
| /* Clear all sleep controls */ |
| ret = tps65910_clear_bits(mfd, |
| TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); |
| if (!ret) |
| ret = tps65910_clear_bits(mfd, |
| TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); |
| if (ret < 0) |
| dev_err(mfd->dev, |
| "Error in configuring SLEEP register\n"); |
| return ret; |
| } |
| |
| /* |
| * For regulator that has separate operational and sleep register make |
| * sure that operational is used and clear sleep register to turn |
| * regulator off when external control is inactive |
| */ |
| if ((id == TPS65910_REG_VDD1) || |
| (id == TPS65910_REG_VDD2) || |
| ((id == TPS65911_REG_VDDCTRL) && |
| (tps65910_chip_id(mfd) == TPS65911))) { |
| int op_reg_add = pmic->get_ctrl_reg(id) + 1; |
| int sr_reg_add = pmic->get_ctrl_reg(id) + 2; |
| int opvsel = tps65910_reg_read(pmic, op_reg_add); |
| int srvsel = tps65910_reg_read(pmic, sr_reg_add); |
| if (opvsel & VDD1_OP_CMD_MASK) { |
| u8 reg_val = srvsel & VDD1_OP_SEL_MASK; |
| ret = tps65910_reg_write(pmic, op_reg_add, reg_val); |
| if (ret < 0) { |
| dev_err(mfd->dev, |
| "Error in configuring op register\n"); |
| return ret; |
| } |
| } |
| ret = tps65910_reg_write(pmic, sr_reg_add, 0); |
| if (ret < 0) { |
| dev_err(mfd->dev, "Error in settting sr register\n"); |
| return ret; |
| } |
| } |
| |
| ret = tps65910_clear_bits(mfd, |
| TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos); |
| if (!ret) { |
| if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) |
| ret = tps65910_set_bits(mfd, |
| TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); |
| else |
| ret = tps65910_clear_bits(mfd, |
| TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos); |
| } |
| if (ret < 0) |
| dev_err(mfd->dev, |
| "Error in configuring SLEEP register\n"); |
| |
| return ret; |
| } |
| |
| static __devinit int tps65910_probe(struct platform_device *pdev) |
| { |
| struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent); |
| struct tps_info *info; |
| struct regulator_init_data *reg_data; |
| struct regulator_dev *rdev; |
| struct tps65910_reg *pmic; |
| struct tps65910_board *pmic_plat_data; |
| int i, err; |
| |
| pmic_plat_data = dev_get_platdata(tps65910->dev); |
| if (!pmic_plat_data) |
| return -EINVAL; |
| |
| pmic = kzalloc(sizeof(*pmic), GFP_KERNEL); |
| if (!pmic) |
| return -ENOMEM; |
| |
| mutex_init(&pmic->mutex); |
| pmic->mfd = tps65910; |
| platform_set_drvdata(pdev, pmic); |
| |
| /* Give control of all register to control port */ |
| tps65910_set_bits(pmic->mfd, TPS65910_DEVCTRL, |
| DEVCTRL_SR_CTL_I2C_SEL_MASK); |
| |
| switch(tps65910_chip_id(tps65910)) { |
| case TPS65910: |
| pmic->get_ctrl_reg = &tps65910_get_ctrl_register; |
| pmic->num_regulators = ARRAY_SIZE(tps65910_regs); |
| pmic->ext_sleep_control = tps65910_ext_sleep_control; |
| info = tps65910_regs; |
| break; |
| case TPS65911: |
| pmic->get_ctrl_reg = &tps65911_get_ctrl_register; |
| pmic->num_regulators = ARRAY_SIZE(tps65911_regs); |
| pmic->ext_sleep_control = tps65911_ext_sleep_control; |
| info = tps65911_regs; |
| break; |
| default: |
| pr_err("Invalid tps chip version\n"); |
| kfree(pmic); |
| return -ENODEV; |
| } |
| |
| pmic->desc = kcalloc(pmic->num_regulators, |
| sizeof(struct regulator_desc), GFP_KERNEL); |
| if (!pmic->desc) { |
| err = -ENOMEM; |
| goto err_free_pmic; |
| } |
| |
| pmic->info = kcalloc(pmic->num_regulators, |
| sizeof(struct tps_info *), GFP_KERNEL); |
| if (!pmic->info) { |
| err = -ENOMEM; |
| goto err_free_desc; |
| } |
| |
| pmic->rdev = kcalloc(pmic->num_regulators, |
| sizeof(struct regulator_dev *), GFP_KERNEL); |
| if (!pmic->rdev) { |
| err = -ENOMEM; |
| goto err_free_info; |
| } |
| |
| for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS; |
| i++, info++) { |
| |
| reg_data = pmic_plat_data->tps65910_pmic_init_data[i]; |
| |
| /* Regulator API handles empty constraints but not NULL |
| * constraints */ |
| if (!reg_data) |
| continue; |
| |
| /* Register the regulators */ |
| pmic->info[i] = info; |
| |
| pmic->desc[i].name = info->name; |
| pmic->desc[i].id = i; |
| pmic->desc[i].n_voltages = info->n_voltages; |
| |
| if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) { |
| pmic->desc[i].ops = &tps65910_ops_dcdc; |
| pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE * |
| VDD1_2_NUM_VOLT_COARSE; |
| } else if (i == TPS65910_REG_VDD3) { |
| if (tps65910_chip_id(tps65910) == TPS65910) |
| pmic->desc[i].ops = &tps65910_ops_vdd3; |
| else |
| pmic->desc[i].ops = &tps65910_ops_dcdc; |
| } else { |
| if (tps65910_chip_id(tps65910) == TPS65910) |
| pmic->desc[i].ops = &tps65910_ops; |
| else |
| pmic->desc[i].ops = &tps65911_ops; |
| } |
| |
| err = tps65910_set_ext_sleep_config(pmic, i, |
| pmic_plat_data->regulator_ext_sleep_control[i]); |
| /* |
| * Failing on regulator for configuring externally control |
| * is not a serious issue, just throw warning. |
| */ |
| if (err < 0) |
| dev_warn(tps65910->dev, |
| "Failed to initialise ext control config\n"); |
| |
| pmic->desc[i].type = REGULATOR_VOLTAGE; |
| pmic->desc[i].owner = THIS_MODULE; |
| |
| rdev = regulator_register(&pmic->desc[i], |
| tps65910->dev, reg_data, pmic, NULL); |
| if (IS_ERR(rdev)) { |
| dev_err(tps65910->dev, |
| "failed to register %s regulator\n", |
| pdev->name); |
| err = PTR_ERR(rdev); |
| goto err_unregister_regulator; |
| } |
| |
| /* Save regulator for cleanup */ |
| pmic->rdev[i] = rdev; |
| } |
| return 0; |
| |
| err_unregister_regulator: |
| while (--i >= 0) |
| regulator_unregister(pmic->rdev[i]); |
| kfree(pmic->rdev); |
| err_free_info: |
| kfree(pmic->info); |
| err_free_desc: |
| kfree(pmic->desc); |
| err_free_pmic: |
| kfree(pmic); |
| return err; |
| } |
| |
| static int __devexit tps65910_remove(struct platform_device *pdev) |
| { |
| struct tps65910_reg *pmic = platform_get_drvdata(pdev); |
| int i; |
| |
| for (i = 0; i < pmic->num_regulators; i++) |
| regulator_unregister(pmic->rdev[i]); |
| |
| kfree(pmic->rdev); |
| kfree(pmic->info); |
| kfree(pmic->desc); |
| kfree(pmic); |
| return 0; |
| } |
| |
| static void tps65910_shutdown(struct platform_device *pdev) |
| { |
| struct tps65910_reg *pmic = platform_get_drvdata(pdev); |
| int i; |
| |
| /* |
| * Before bootloader jumps to kernel, it makes sure that required |
| * external control signals are in desired state so that given rails |
| * can be configure accordingly. |
| * If rails are configured to be controlled from external control |
| * then before shutting down/rebooting the system, the external |
| * control configuration need to be remove from the rails so that |
| * its output will be available as per register programming even |
| * if external controls are removed. This is require when the POR |
| * value of the control signals are not in active state and before |
| * bootloader initializes it, the system requires the rail output |
| * to be active for booting. |
| */ |
| for (i = 0; i < pmic->num_regulators; i++) { |
| int err; |
| if (!pmic->rdev[i]) |
| continue; |
| |
| err = tps65910_set_ext_sleep_config(pmic, i, 0); |
| if (err < 0) |
| dev_err(&pdev->dev, |
| "Error in clearing external control\n"); |
| } |
| } |
| |
| static struct platform_driver tps65910_driver = { |
| .driver = { |
| .name = "tps65910-pmic", |
| .owner = THIS_MODULE, |
| }, |
| .probe = tps65910_probe, |
| .remove = __devexit_p(tps65910_remove), |
| .shutdown = tps65910_shutdown, |
| }; |
| |
| static int __init tps65910_init(void) |
| { |
| return platform_driver_register(&tps65910_driver); |
| } |
| subsys_initcall(tps65910_init); |
| |
| static void __exit tps65910_cleanup(void) |
| { |
| platform_driver_unregister(&tps65910_driver); |
| } |
| module_exit(tps65910_cleanup); |
| |
| MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); |
| MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:tps65910-pmic"); |