--- /dev/null
--- /dev/null
----- - ---- ---------- .n_voltages = AS3722_SD0_VSEL_MAX + 1,
+ + /*
+ + * Voltage regulator support for AMS AS3722 PMIC
+ + *
+ + * Copyright (C) 2013 ams
+ + *
+ + * Author: Florian Lobmaier <florian.lobmaier@ams.com>
+ + * Author: Laxman Dewangan <ldewangan@nvidia.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
+ + *
+ + */
+ +
+ + #include <linux/err.h>
+ + #include <linux/kernel.h>
+ + #include <linux/module.h>
+ + #include <linux/mfd/as3722.h>
+ + #include <linux/of.h>
+ + #include <linux/of_platform.h>
+ + #include <linux/platform_device.h>
+ + #include <linux/regulator/driver.h>
+ + #include <linux/regulator/machine.h>
+ + #include <linux/regulator/of_regulator.h>
+ + #include <linux/slab.h>
+ +
+ + /* Regulator IDs */
+ + enum as3722_regulators_id {
+ + AS3722_REGULATOR_ID_SD0,
+ + AS3722_REGULATOR_ID_SD1,
+ + AS3722_REGULATOR_ID_SD2,
+ + AS3722_REGULATOR_ID_SD3,
+ + AS3722_REGULATOR_ID_SD4,
+ + AS3722_REGULATOR_ID_SD5,
+ + AS3722_REGULATOR_ID_SD6,
+ + AS3722_REGULATOR_ID_LDO0,
+ + AS3722_REGULATOR_ID_LDO1,
+ + AS3722_REGULATOR_ID_LDO2,
+ + AS3722_REGULATOR_ID_LDO3,
+ + AS3722_REGULATOR_ID_LDO4,
+ + AS3722_REGULATOR_ID_LDO5,
+ + AS3722_REGULATOR_ID_LDO6,
+ + AS3722_REGULATOR_ID_LDO7,
+ + AS3722_REGULATOR_ID_LDO9,
+ + AS3722_REGULATOR_ID_LDO10,
+ + AS3722_REGULATOR_ID_LDO11,
+ + AS3722_REGULATOR_ID_MAX,
+ + };
+ +
+ + struct as3722_register_mapping {
+ + u8 regulator_id;
+ + const char *name;
+ + const char *sname;
+ + u8 vsel_reg;
+ + u8 vsel_mask;
+ + int n_voltages;
+ + u32 enable_reg;
+ + u8 enable_mask;
+ + u32 control_reg;
+ + u8 mode_mask;
+ + u32 sleep_ctrl_reg;
+ + u8 sleep_ctrl_mask;
+ + };
+ +
+ + struct as3722_regulator_config_data {
+ + struct regulator_init_data *reg_init;
+ + bool enable_tracking;
+ + int ext_control;
+ + };
+ +
+ + struct as3722_regulators {
+ + struct device *dev;
+ + struct as3722 *as3722;
+ + struct regulator_dev *rdevs[AS3722_REGULATOR_ID_MAX];
+ + struct regulator_desc desc[AS3722_REGULATOR_ID_MAX];
+ + struct as3722_regulator_config_data
+ + reg_config_data[AS3722_REGULATOR_ID_MAX];
+ + };
+ +
+ + static const struct as3722_register_mapping as3722_reg_lookup[] = {
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_SD0,
+ + .name = "as3722-sd0",
+ + .vsel_reg = AS3722_SD0_VOLTAGE_REG,
+ + .vsel_mask = AS3722_SD_VSEL_MASK,
+ + .enable_reg = AS3722_SD_CONTROL_REG,
+ + .enable_mask = AS3722_SDn_CTRL(0),
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+ + .sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK,
+ + .control_reg = AS3722_SD0_CONTROL_REG,
+ + .mode_mask = AS3722_SD0_MODE_FAST,
----- - ---- ---------- .n_voltages = AS3722_SD0_VSEL_MAX + 1,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_SD1,
+ + .name = "as3722-sd1",
+ + .vsel_reg = AS3722_SD1_VOLTAGE_REG,
+ + .vsel_mask = AS3722_SD_VSEL_MASK,
+ + .enable_reg = AS3722_SD_CONTROL_REG,
+ + .enable_mask = AS3722_SDn_CTRL(1),
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+ + .sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK,
+ + .control_reg = AS3722_SD1_CONTROL_REG,
+ + .mode_mask = AS3722_SD1_MODE_FAST,
----- - ---- ---------- .n_voltages = AS3722_SD0_VSEL_MAX + 1,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_SD2,
+ + .name = "as3722-sd2",
+ + .sname = "vsup-sd2",
+ + .vsel_reg = AS3722_SD2_VOLTAGE_REG,
+ + .vsel_mask = AS3722_SD_VSEL_MASK,
+ + .enable_reg = AS3722_SD_CONTROL_REG,
+ + .enable_mask = AS3722_SDn_CTRL(2),
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+ + .sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK,
+ + .control_reg = AS3722_SD23_CONTROL_REG,
+ + .mode_mask = AS3722_SD2_MODE_FAST,
+ + .n_voltages = AS3722_SD2_VSEL_MAX + 1,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_SD3,
+ + .name = "as3722-sd3",
+ + .sname = "vsup-sd3",
+ + .vsel_reg = AS3722_SD3_VOLTAGE_REG,
+ + .vsel_mask = AS3722_SD_VSEL_MASK,
+ + .enable_reg = AS3722_SD_CONTROL_REG,
+ + .enable_mask = AS3722_SDn_CTRL(3),
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+ + .sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK,
+ + .control_reg = AS3722_SD23_CONTROL_REG,
+ + .mode_mask = AS3722_SD3_MODE_FAST,
+ + .n_voltages = AS3722_SD2_VSEL_MAX + 1,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_SD4,
+ + .name = "as3722-sd4",
+ + .sname = "vsup-sd4",
+ + .vsel_reg = AS3722_SD4_VOLTAGE_REG,
+ + .vsel_mask = AS3722_SD_VSEL_MASK,
+ + .enable_reg = AS3722_SD_CONTROL_REG,
+ + .enable_mask = AS3722_SDn_CTRL(4),
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
+ + .sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK,
+ + .control_reg = AS3722_SD4_CONTROL_REG,
+ + .mode_mask = AS3722_SD4_MODE_FAST,
+ + .n_voltages = AS3722_SD2_VSEL_MAX + 1,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_SD5,
+ + .name = "as3722-sd5",
+ + .sname = "vsup-sd5",
+ + .vsel_reg = AS3722_SD5_VOLTAGE_REG,
+ + .vsel_mask = AS3722_SD_VSEL_MASK,
+ + .enable_reg = AS3722_SD_CONTROL_REG,
+ + .enable_mask = AS3722_SDn_CTRL(5),
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
+ + .sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK,
+ + .control_reg = AS3722_SD5_CONTROL_REG,
+ + .mode_mask = AS3722_SD5_MODE_FAST,
+ + .n_voltages = AS3722_SD2_VSEL_MAX + 1,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_SD6,
+ + .name = "as3722-sd6",
+ + .vsel_reg = AS3722_SD6_VOLTAGE_REG,
+ + .vsel_mask = AS3722_SD_VSEL_MASK,
+ + .enable_reg = AS3722_SD_CONTROL_REG,
+ + .enable_mask = AS3722_SDn_CTRL(6),
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
+ + .sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK,
+ + .control_reg = AS3722_SD6_CONTROL_REG,
+ + .mode_mask = AS3722_SD6_MODE_FAST,
------ ---- - - ------ val <<= ffs(mask) - 1;
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO0,
+ + .name = "as3722-ldo0",
+ + .sname = "vin-ldo0",
+ + .vsel_reg = AS3722_LDO0_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO0_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO0_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+ + .sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO0_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO1,
+ + .name = "as3722-ldo1",
+ + .sname = "vin-ldo1-6",
+ + .vsel_reg = AS3722_LDO1_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO1_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+ + .sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO2,
+ + .name = "as3722-ldo2",
+ + .sname = "vin-ldo2-5-7",
+ + .vsel_reg = AS3722_LDO2_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO2_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+ + .sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO3,
+ + .name = "as3722-ldo3",
+ + .name = "vin-ldo3-4",
+ + .vsel_reg = AS3722_LDO3_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO3_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO3_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+ + .sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO3_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO4,
+ + .name = "as3722-ldo4",
+ + .name = "vin-ldo3-4",
+ + .vsel_reg = AS3722_LDO4_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO4_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+ + .sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO5,
+ + .name = "as3722-ldo5",
+ + .sname = "vin-ldo2-5-7",
+ + .vsel_reg = AS3722_LDO5_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO5_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+ + .sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO6,
+ + .name = "as3722-ldo6",
+ + .sname = "vin-ldo1-6",
+ + .vsel_reg = AS3722_LDO6_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO6_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+ + .sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO7,
+ + .name = "as3722-ldo7",
+ + .sname = "vin-ldo2-5-7",
+ + .vsel_reg = AS3722_LDO7_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL0_REG,
+ + .enable_mask = AS3722_LDO7_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+ + .sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO9,
+ + .name = "as3722-ldo9",
+ + .sname = "vin-ldo9-10",
+ + .vsel_reg = AS3722_LDO9_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL1_REG,
+ + .enable_mask = AS3722_LDO9_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
+ + .sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO10,
+ + .name = "as3722-ldo10",
+ + .sname = "vin-ldo9-10",
+ + .vsel_reg = AS3722_LDO10_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL1_REG,
+ + .enable_mask = AS3722_LDO10_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
+ + .sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + {
+ + .regulator_id = AS3722_REGULATOR_ID_LDO11,
+ + .name = "as3722-ldo11",
+ + .sname = "vin-ldo11",
+ + .vsel_reg = AS3722_LDO11_VOLTAGE_REG,
+ + .vsel_mask = AS3722_LDO_VSEL_MASK,
+ + .enable_reg = AS3722_LDOCONTROL1_REG,
+ + .enable_mask = AS3722_LDO11_CTRL,
+ + .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
+ + .sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK,
+ + .n_voltages = AS3722_LDO_NUM_VOLT,
+ + },
+ + };
+ +
+ +
+ + static const int as3722_ldo_current[] = { 150000, 300000 };
+ + static const int as3722_sd016_current[] = { 2500000, 3000000, 3500000 };
+ +
+ + static int as3722_current_to_index(int min_uA, int max_uA,
+ + const int *curr_table, int n_currents)
+ + {
+ + int i;
+ +
+ + for (i = n_currents - 1; i >= 0; i--) {
+ + if ((min_uA <= curr_table[i]) && (curr_table[i] <= max_uA))
+ + return i;
+ + }
+ + return -EINVAL;
+ + }
+ +
+ + static int as3722_ldo_get_current_limit(struct regulator_dev *rdev)
+ + {
+ + struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
+ + struct as3722 *as3722 = as3722_regs->as3722;
+ + int id = rdev_get_id(rdev);
+ + u32 val;
+ + int ret;
+ +
+ + ret = as3722_read(as3722, as3722_reg_lookup[id].vsel_reg, &val);
+ + if (ret < 0) {
+ + dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
+ + as3722_reg_lookup[id].vsel_reg, ret);
+ + return ret;
+ + }
+ + if (val & AS3722_LDO_ILIMIT_MASK)
+ + return 300000;
+ + return 150000;
+ + }
+ +
+ + static int as3722_ldo_set_current_limit(struct regulator_dev *rdev,
+ + int min_uA, int max_uA)
+ + {
+ + struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
+ + struct as3722 *as3722 = as3722_regs->as3722;
+ + int id = rdev_get_id(rdev);
+ + int ret;
+ + u32 reg = 0;
+ +
+ + ret = as3722_current_to_index(min_uA, max_uA, as3722_ldo_current,
+ + ARRAY_SIZE(as3722_ldo_current));
+ + if (ret < 0) {
+ + dev_err(as3722_regs->dev,
+ + "Current range min:max = %d:%d does not support\n",
+ + min_uA, max_uA);
+ + return ret;
+ + }
+ + if (ret)
+ + reg = AS3722_LDO_ILIMIT_BIT;
+ + return as3722_update_bits(as3722, as3722_reg_lookup[id].vsel_reg,
+ + AS3722_LDO_ILIMIT_MASK, reg);
+ + }
+ +
+ + static struct regulator_ops as3722_ldo0_ops = {
+ + .is_enabled = regulator_is_enabled_regmap,
+ + .enable = regulator_enable_regmap,
+ + .disable = regulator_disable_regmap,
+ + .list_voltage = regulator_list_voltage_linear,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_current_limit = as3722_ldo_get_current_limit,
+ + .set_current_limit = as3722_ldo_set_current_limit,
+ + };
+ +
+ + static struct regulator_ops as3722_ldo0_extcntrl_ops = {
+ + .list_voltage = regulator_list_voltage_linear,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_current_limit = as3722_ldo_get_current_limit,
+ + .set_current_limit = as3722_ldo_set_current_limit,
+ + };
+ +
+ + static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg,
+ + int id, u8 mode)
+ + {
+ + struct as3722 *as3722 = as3722_reg->as3722;
+ +
+ + switch (mode) {
+ + case AS3722_LDO3_MODE_PMOS:
+ + case AS3722_LDO3_MODE_PMOS_TRACKING:
+ + case AS3722_LDO3_MODE_NMOS:
+ + case AS3722_LDO3_MODE_SWITCH:
+ + return as3722_update_bits(as3722,
+ + as3722_reg_lookup[id].vsel_reg,
+ + AS3722_LDO3_MODE_MASK, mode);
+ +
+ + default:
+ + return -EINVAL;
+ + }
+ + }
+ +
+ + static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev)
+ + {
+ + return 150000;
+ + }
+ +
+ + static struct regulator_ops as3722_ldo3_ops = {
+ + .is_enabled = regulator_is_enabled_regmap,
+ + .enable = regulator_enable_regmap,
+ + .disable = regulator_disable_regmap,
+ + .list_voltage = regulator_list_voltage_linear,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_current_limit = as3722_ldo3_get_current_limit,
+ + };
+ +
+ + static struct regulator_ops as3722_ldo3_extcntrl_ops = {
+ + .list_voltage = regulator_list_voltage_linear,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_current_limit = as3722_ldo3_get_current_limit,
+ + };
+ +
+ + static const struct regulator_linear_range as3722_ldo_ranges[] = {
+ + REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000),
+ + REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000),
+ + };
+ +
+ + static struct regulator_ops as3722_ldo_ops = {
+ + .is_enabled = regulator_is_enabled_regmap,
+ + .enable = regulator_enable_regmap,
+ + .disable = regulator_disable_regmap,
+ + .map_voltage = regulator_map_voltage_linear_range,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .list_voltage = regulator_list_voltage_linear_range,
+ + .get_current_limit = as3722_ldo_get_current_limit,
+ + .set_current_limit = as3722_ldo_set_current_limit,
+ + };
+ +
+ + static struct regulator_ops as3722_ldo_extcntrl_ops = {
+ + .map_voltage = regulator_map_voltage_linear_range,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .list_voltage = regulator_list_voltage_linear_range,
+ + .get_current_limit = as3722_ldo_get_current_limit,
+ + .set_current_limit = as3722_ldo_set_current_limit,
+ + };
+ +
+ + static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev)
+ + {
+ + struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
+ + struct as3722 *as3722 = as3722_regs->as3722;
+ + int id = rdev_get_id(rdev);
+ + u32 val;
+ + int ret;
+ +
+ + if (!as3722_reg_lookup[id].control_reg)
+ + return -ENOTSUPP;
+ +
+ + ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val);
+ + if (ret < 0) {
+ + dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
+ + as3722_reg_lookup[id].control_reg, ret);
+ + return ret;
+ + }
+ +
+ + if (val & as3722_reg_lookup[id].mode_mask)
+ + return REGULATOR_MODE_FAST;
+ + else
+ + return REGULATOR_MODE_NORMAL;
+ + }
+ +
+ + static int as3722_sd_set_mode(struct regulator_dev *rdev,
+ + unsigned int mode)
+ + {
+ + struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
+ + struct as3722 *as3722 = as3722_regs->as3722;
+ + u8 id = rdev_get_id(rdev);
+ + u8 val = 0;
+ + int ret;
+ +
+ + if (!as3722_reg_lookup[id].control_reg)
+ + return -ERANGE;
+ +
+ + switch (mode) {
+ + case REGULATOR_MODE_FAST:
+ + val = as3722_reg_lookup[id].mode_mask;
+ + case REGULATOR_MODE_NORMAL: /* fall down */
+ + break;
+ + default:
+ + return -EINVAL;
+ + }
+ +
+ + ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg,
+ + as3722_reg_lookup[id].mode_mask, val);
+ + if (ret < 0) {
+ + dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
+ + as3722_reg_lookup[id].control_reg, ret);
+ + return ret;
+ + }
+ + return ret;
+ + }
+ +
+ + static int as3722_sd016_get_current_limit(struct regulator_dev *rdev)
+ + {
+ + struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
+ + struct as3722 *as3722 = as3722_regs->as3722;
+ + int id = rdev_get_id(rdev);
+ + u32 val, reg;
+ + int mask;
+ + int ret;
+ +
+ + switch (id) {
+ + case AS3722_REGULATOR_ID_SD0:
+ + reg = AS3722_OVCURRENT_REG;
+ + mask = AS3722_OVCURRENT_SD0_TRIP_MASK;
+ + break;
+ + case AS3722_REGULATOR_ID_SD1:
+ + reg = AS3722_OVCURRENT_REG;
+ + mask = AS3722_OVCURRENT_SD1_TRIP_MASK;
+ + break;
+ + case AS3722_REGULATOR_ID_SD6:
+ + reg = AS3722_OVCURRENT_DEB_REG;
+ + mask = AS3722_OVCURRENT_SD6_TRIP_MASK;
+ + break;
+ + default:
+ + return -EINVAL;
+ + }
+ + ret = as3722_read(as3722, reg, &val);
+ + if (ret < 0) {
+ + dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
+ + reg, ret);
+ + return ret;
+ + }
+ + val &= mask;
+ + val >>= ffs(mask) - 1;
+ + if (val == 3)
+ + return -EINVAL;
+ + return as3722_sd016_current[val];
+ + }
+ +
+ + static int as3722_sd016_set_current_limit(struct regulator_dev *rdev,
+ + int min_uA, int max_uA)
+ + {
+ + struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
+ + struct as3722 *as3722 = as3722_regs->as3722;
+ + int id = rdev_get_id(rdev);
+ + int ret;
+ + int val;
+ + int mask;
+ + u32 reg;
+ +
+ + ret = as3722_current_to_index(min_uA, max_uA, as3722_sd016_current,
+ + ARRAY_SIZE(as3722_sd016_current));
+ + if (ret < 0) {
+ + dev_err(as3722_regs->dev,
+ + "Current range min:max = %d:%d does not support\n",
+ + min_uA, max_uA);
+ + return ret;
+ + }
+ +
+ + switch (id) {
+ + case AS3722_REGULATOR_ID_SD0:
+ + reg = AS3722_OVCURRENT_REG;
+ + mask = AS3722_OVCURRENT_SD0_TRIP_MASK;
+ + break;
+ + case AS3722_REGULATOR_ID_SD1:
+ + reg = AS3722_OVCURRENT_REG;
+ + mask = AS3722_OVCURRENT_SD1_TRIP_MASK;
+ + break;
+ + case AS3722_REGULATOR_ID_SD6:
+ + reg = AS3722_OVCURRENT_DEB_REG;
+ + mask = AS3722_OVCURRENT_SD6_TRIP_MASK;
+ + break;
+ + default:
+ + return -EINVAL;
+ + }
+++++++++++++ + ++++++ ret <<= ffs(mask) - 1;
+ + val = ret & mask;
----- - ---- ---------- as3722_regs->desc[id].min_uV = 610000;
+ + return as3722_update_bits(as3722, reg, mask, val);
+ + }
+ +
+++++ +++++++++++++++++static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs)
+++++ +++++++++++++++++{
+++++ +++++++++++++++++ int err;
+++++ +++++++++++++++++ unsigned val;
+++++ +++++++++++++++++
+++++ +++++++++++++++++ err = as3722_read(as3722_regs->as3722, AS3722_FUSE7_REG, &val);
+++++ +++++++++++++++++ if (err < 0) {
+++++ +++++++++++++++++ dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
+++++ +++++++++++++++++ AS3722_FUSE7_REG, err);
+++++ +++++++++++++++++ return false;
+++++ +++++++++++++++++ }
+++++ +++++++++++++++++ if (val & AS3722_FUSE7_SD0_LOW_VOLTAGE)
+++++ +++++++++++++++++ return true;
+++++ +++++++++++++++++ return false;
+++++ +++++++++++++++++}
+++++ +++++++++++++++++
+ + static const struct regulator_linear_range as3722_sd2345_ranges[] = {
+ + REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500),
+ + REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
+ + REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000),
+ + };
+ +
+ + static struct regulator_ops as3722_sd016_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,
+ + .get_current_limit = as3722_sd016_get_current_limit,
+ + .set_current_limit = as3722_sd016_set_current_limit,
+ + .get_mode = as3722_sd_get_mode,
+ + .set_mode = as3722_sd_set_mode,
+ + };
+ +
+ + static struct regulator_ops as3722_sd016_extcntrl_ops = {
+ + .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,
+ + .get_current_limit = as3722_sd016_get_current_limit,
+ + .set_current_limit = as3722_sd016_set_current_limit,
+ + .get_mode = as3722_sd_get_mode,
+ + .set_mode = as3722_sd_set_mode,
+ + };
+ +
+ + static struct regulator_ops as3722_sd2345_ops = {
+ + .is_enabled = regulator_is_enabled_regmap,
+ + .enable = regulator_enable_regmap,
+ + .disable = regulator_disable_regmap,
+ + .list_voltage = regulator_list_voltage_linear_range,
+ + .map_voltage = regulator_map_voltage_linear_range,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .get_mode = as3722_sd_get_mode,
+ + .set_mode = as3722_sd_set_mode,
+ + };
+ +
+ + static struct regulator_ops as3722_sd2345_extcntrl_ops = {
+ + .list_voltage = regulator_list_voltage_linear_range,
+ + .map_voltage = regulator_map_voltage_linear_range,
+ + .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ + .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ + .get_mode = as3722_sd_get_mode,
+ + .set_mode = as3722_sd_set_mode,
+ + };
+ +
+ + static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id,
+ + int ext_pwr_ctrl)
+ + {
+ + int ret;
+ + unsigned int val;
+ +
+ + if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) ||
+ + (ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3))
+ + return -EINVAL;
+ +
+ + val = ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1);
+ + ret = as3722_update_bits(as3722_regs->as3722,
+ + as3722_reg_lookup[id].sleep_ctrl_reg,
+ + as3722_reg_lookup[id].sleep_ctrl_mask, val);
+ + if (ret < 0)
+ + dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
+ + as3722_reg_lookup[id].sleep_ctrl_reg, ret);
+ + return ret;
+ + }
+ +
+ + static struct of_regulator_match as3722_regulator_matches[] = {
+ + { .name = "sd0", },
+ + { .name = "sd1", },
+ + { .name = "sd2", },
+ + { .name = "sd3", },
+ + { .name = "sd4", },
+ + { .name = "sd5", },
+ + { .name = "sd6", },
+ + { .name = "ldo0", },
+ + { .name = "ldo1", },
+ + { .name = "ldo2", },
+ + { .name = "ldo3", },
+ + { .name = "ldo4", },
+ + { .name = "ldo5", },
+ + { .name = "ldo6", },
+ + { .name = "ldo7", },
+ + { .name = "ldo9", },
+ + { .name = "ldo10", },
+ + { .name = "ldo11", },
+ + };
+ +
+ + static int as3722_get_regulator_dt_data(struct platform_device *pdev,
+ + struct as3722_regulators *as3722_regs)
+ + {
+ + struct device_node *np;
+ + struct as3722_regulator_config_data *reg_config;
+ + u32 prop;
+ + int id;
+ + int ret;
+ +
+ + np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
+ + if (!np) {
+ + dev_err(&pdev->dev, "Device is not having regulators node\n");
+ + return -ENODEV;
+ + }
+ + pdev->dev.of_node = np;
+ +
+ + ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches,
+ + ARRAY_SIZE(as3722_regulator_matches));
+ + if (ret < 0) {
+ + dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n",
+ + ret);
+ + return ret;
+ + }
+ +
+ + for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) {
+ + struct device_node *reg_node;
+ +
+ + reg_config = &as3722_regs->reg_config_data[id];
+ + reg_config->reg_init = as3722_regulator_matches[id].init_data;
+ + reg_node = as3722_regulator_matches[id].of_node;
+ +
+ + if (!reg_config->reg_init || !reg_node)
+ + continue;
+ +
+ + ret = of_property_read_u32(reg_node, "ams,ext-control", &prop);
+ + if (!ret) {
+ + if (prop < 3)
+ + reg_config->ext_control = prop;
+ + else
+ + dev_warn(&pdev->dev,
+ + "ext-control have invalid option: %u\n",
+ + prop);
+ + }
+ + reg_config->enable_tracking =
+ + of_property_read_bool(reg_node, "ams,enable-tracking");
+ + }
+ + return 0;
+ + }
+ +
+ + static int as3722_regulator_probe(struct platform_device *pdev)
+ + {
+ + struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
+ + struct as3722_regulators *as3722_regs;
+ + struct as3722_regulator_config_data *reg_config;
+ + struct regulator_dev *rdev;
+ + struct regulator_config config = { };
+ + struct regulator_ops *ops;
+ + int id;
+ + int ret;
+ +
+ + as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs),
+ + GFP_KERNEL);
+ + if (!as3722_regs)
+ + return -ENOMEM;
+ +
+ + as3722_regs->dev = &pdev->dev;
+ + as3722_regs->as3722 = as3722;
+ + platform_set_drvdata(pdev, as3722_regs);
+ +
+ + ret = as3722_get_regulator_dt_data(pdev, as3722_regs);
+ + if (ret < 0)
+ + return ret;
+ +
+ + config.dev = &pdev->dev;
+ + config.driver_data = as3722_regs;
+ + config.regmap = as3722->regmap;
+ +
+ + for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
+ + reg_config = &as3722_regs->reg_config_data[id];
+ +
+ + as3722_regs->desc[id].name = as3722_reg_lookup[id].name;
+ + as3722_regs->desc[id].supply_name = as3722_reg_lookup[id].sname;
+ + as3722_regs->desc[id].id = as3722_reg_lookup[id].regulator_id;
+ + as3722_regs->desc[id].n_voltages =
+ + as3722_reg_lookup[id].n_voltages;
+ + as3722_regs->desc[id].type = REGULATOR_VOLTAGE;
+ + as3722_regs->desc[id].owner = THIS_MODULE;
+ + as3722_regs->desc[id].enable_reg =
+ + as3722_reg_lookup[id].enable_reg;
+ + as3722_regs->desc[id].enable_mask =
+ + as3722_reg_lookup[id].enable_mask;
+ + as3722_regs->desc[id].vsel_reg = as3722_reg_lookup[id].vsel_reg;
+ + as3722_regs->desc[id].vsel_mask =
+ + as3722_reg_lookup[id].vsel_mask;
+ + switch (id) {
+ + case AS3722_REGULATOR_ID_LDO0:
+ + if (reg_config->ext_control)
+ + ops = &as3722_ldo0_extcntrl_ops;
+ + else
+ + ops = &as3722_ldo0_ops;
+ + as3722_regs->desc[id].min_uV = 825000;
+ + as3722_regs->desc[id].uV_step = 25000;
+ + as3722_regs->desc[id].linear_min_sel = 1;
+ + as3722_regs->desc[id].enable_time = 500;
+ + break;
+ + case AS3722_REGULATOR_ID_LDO3:
+ + if (reg_config->ext_control)
+ + ops = &as3722_ldo3_extcntrl_ops;
+ + else
+ + ops = &as3722_ldo3_ops;
+ + as3722_regs->desc[id].min_uV = 620000;
+ + as3722_regs->desc[id].uV_step = 20000;
+ + as3722_regs->desc[id].linear_min_sel = 1;
+ + as3722_regs->desc[id].enable_time = 500;
+ + if (reg_config->enable_tracking) {
+ + ret = as3722_ldo3_set_tracking_mode(as3722_regs,
+ + id, AS3722_LDO3_MODE_PMOS_TRACKING);
+ + if (ret < 0) {
+ + dev_err(&pdev->dev,
+ + "LDO3 tracking failed: %d\n",
+ + ret);
+ + return ret;
+ + }
+ + }
+ + break;
+ + case AS3722_REGULATOR_ID_SD0:
+ + case AS3722_REGULATOR_ID_SD1:
+ + case AS3722_REGULATOR_ID_SD6:
+ + if (reg_config->ext_control)
+ + ops = &as3722_sd016_extcntrl_ops;
+ + else
+ + ops = &as3722_sd016_ops;
----- - ---- ---------- as3722_regs->desc[id].min_uV = 825000;
----- - ---- ---------- as3722_regs->desc[id].uV_step = 25000;
----- - ---- ---------- as3722_regs->desc[id].linear_min_sel = 1;
+++++ +++++++++++++++++ if (id == AS3722_REGULATOR_ID_SD0 &&
+++++ +++++++++++++++++ as3722_sd0_is_low_voltage(as3722_regs)) {
+++++ +++++++++++++++++ as3722_regs->desc[id].n_voltages =
+++++ +++++++++++++++++ AS3722_SD0_VSEL_LOW_VOL_MAX + 1;
+++++ +++++++++++++++++ as3722_regs->desc[id].min_uV = 410000;
+++++ +++++++++++++++++ } else {
+++++ +++++++++++++++++ as3722_regs->desc[id].n_voltages =
+++++ +++++++++++++++++ AS3722_SD0_VSEL_MAX + 1,
+++++ +++++++++++++++++ as3722_regs->desc[id].min_uV = 610000;
+++++ +++++++++++++++++ }
+ + as3722_regs->desc[id].uV_step = 10000;
+ + as3722_regs->desc[id].linear_min_sel = 1;
+++++ +++++++++++++++++ as3722_regs->desc[id].enable_time = 600;
+ + break;
+ + case AS3722_REGULATOR_ID_SD2:
+ + case AS3722_REGULATOR_ID_SD3:
+ + case AS3722_REGULATOR_ID_SD4:
+ + case AS3722_REGULATOR_ID_SD5:
+ + if (reg_config->ext_control)
+ + ops = &as3722_sd2345_extcntrl_ops;
+ + else
+ + ops = &as3722_sd2345_ops;
+ + as3722_regs->desc[id].linear_ranges =
+ + as3722_sd2345_ranges;
+ + as3722_regs->desc[id].n_linear_ranges =
+ + ARRAY_SIZE(as3722_sd2345_ranges);
+ + break;
+ + default:
+ + if (reg_config->ext_control)
+ + ops = &as3722_ldo_extcntrl_ops;
+ + else
+ + ops = &as3722_ldo_ops;
+ + as3722_regs->desc[id].enable_time = 500;
+ + as3722_regs->desc[id].linear_ranges = as3722_ldo_ranges;
+ + as3722_regs->desc[id].n_linear_ranges =
+ + ARRAY_SIZE(as3722_ldo_ranges);
+ + break;
+ + }
+ + as3722_regs->desc[id].ops = ops;
+ + config.init_data = reg_config->reg_init;
+ + config.of_node = as3722_regulator_matches[id].of_node;
+ + rdev = devm_regulator_register(&pdev->dev,
+ + &as3722_regs->desc[id], &config);
+ + if (IS_ERR(rdev)) {
+ + ret = PTR_ERR(rdev);
+ + dev_err(&pdev->dev, "regulator %d register failed %d\n",
+ + id, ret);
+ + return ret;
+ + }
+ +
+ + as3722_regs->rdevs[id] = rdev;
+ + if (reg_config->ext_control) {
+ + ret = regulator_enable_regmap(rdev);
+ + if (ret < 0) {
+ + dev_err(&pdev->dev,
+ + "Regulator %d enable failed: %d\n",
+ + id, ret);
+ + return ret;
+ + }
+ + ret = as3722_extreg_init(as3722_regs, id,
+ + reg_config->ext_control);
+ + if (ret < 0) {
+ + dev_err(&pdev->dev,
+ + "AS3722 ext control failed: %d", ret);
+ + return ret;
+ + }
+ + }
+ + }
+ + return 0;
+ + }
+ +
+ + static const struct of_device_id of_as3722_regulator_match[] = {
+ + { .compatible = "ams,as3722-regulator", },
+ + {},
+ + };
+ + MODULE_DEVICE_TABLE(of, of_as3722_regulator_match);
+ +
+ + static struct platform_driver as3722_regulator_driver = {
+ + .driver = {
+ + .name = "as3722-regulator",
+ + .owner = THIS_MODULE,
+ + .of_match_table = of_as3722_regulator_match,
+ + },
+ + .probe = as3722_regulator_probe,
+ + };
+ +
+ + module_platform_driver(as3722_regulator_driver);
+ +
+ + MODULE_ALIAS("platform:as3722-regulator");
+ + MODULE_DESCRIPTION("AS3722 regulator driver");
+ + MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
+ + MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+ + MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / commitdiff