From 863981e96738983919de841ec669e157e6bdaeb0 Mon Sep 17 00:00:00 2001 From: AndrĂ© Fabian Silva Delgado Date: Sun, 11 Sep 2016 04:34:46 -0300 Subject: Linux-libre 4.7.1-gnu --- drivers/regulator/max8997.c | 1241 ------------------------------------------- 1 file changed, 1241 deletions(-) delete mode 100644 drivers/regulator/max8997.c (limited to 'drivers/regulator/max8997.c') diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c deleted file mode 100644 index ea0196d44..000000000 --- a/drivers/regulator/max8997.c +++ /dev/null @@ -1,1241 +0,0 @@ -/* - * max8997.c - Regulator driver for the Maxim 8997/8966 - * - * Copyright (C) 2011 Samsung Electronics - * MyungJoo Ham - * - * 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 max8998.c - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -struct max8997_data { - struct device *dev; - struct max8997_dev *iodev; - int num_regulators; - int ramp_delay; /* in mV/us */ - - bool buck1_gpiodvs; - bool buck2_gpiodvs; - bool buck5_gpiodvs; - u8 buck1_vol[8]; - u8 buck2_vol[8]; - u8 buck5_vol[8]; - int buck125_gpios[3]; - int buck125_gpioindex; - bool ignore_gpiodvs_side_effect; - - u8 saved_states[MAX8997_REG_MAX]; -}; - -static const unsigned int safeoutvolt[] = { - 4850000, - 4900000, - 4950000, - 3300000, -}; - -static inline void max8997_set_gpio(struct max8997_data *max8997) -{ - int set3 = (max8997->buck125_gpioindex) & 0x1; - int set2 = ((max8997->buck125_gpioindex) >> 1) & 0x1; - int set1 = ((max8997->buck125_gpioindex) >> 2) & 0x1; - - gpio_set_value(max8997->buck125_gpios[0], set1); - gpio_set_value(max8997->buck125_gpios[1], set2); - gpio_set_value(max8997->buck125_gpios[2], set3); -} - -struct voltage_map_desc { - int min; - int max; - int step; -}; - -/* Voltage maps in uV */ -static const struct voltage_map_desc ldo_voltage_map_desc = { - .min = 800000, .max = 3950000, .step = 50000, -}; /* LDO1 ~ 18, 21 all */ - -static const struct voltage_map_desc buck1245_voltage_map_desc = { - .min = 650000, .max = 2225000, .step = 25000, -}; /* Buck1, 2, 4, 5 */ - -static const struct voltage_map_desc buck37_voltage_map_desc = { - .min = 750000, .max = 3900000, .step = 50000, -}; /* Buck3, 7 */ - -/* current map in uA */ -static const struct voltage_map_desc charger_current_map_desc = { - .min = 200000, .max = 950000, .step = 50000, -}; - -static const struct voltage_map_desc topoff_current_map_desc = { - .min = 50000, .max = 200000, .step = 10000, -}; - -static const struct voltage_map_desc *reg_voltage_map[] = { - [MAX8997_LDO1] = &ldo_voltage_map_desc, - [MAX8997_LDO2] = &ldo_voltage_map_desc, - [MAX8997_LDO3] = &ldo_voltage_map_desc, - [MAX8997_LDO4] = &ldo_voltage_map_desc, - [MAX8997_LDO5] = &ldo_voltage_map_desc, - [MAX8997_LDO6] = &ldo_voltage_map_desc, - [MAX8997_LDO7] = &ldo_voltage_map_desc, - [MAX8997_LDO8] = &ldo_voltage_map_desc, - [MAX8997_LDO9] = &ldo_voltage_map_desc, - [MAX8997_LDO10] = &ldo_voltage_map_desc, - [MAX8997_LDO11] = &ldo_voltage_map_desc, - [MAX8997_LDO12] = &ldo_voltage_map_desc, - [MAX8997_LDO13] = &ldo_voltage_map_desc, - [MAX8997_LDO14] = &ldo_voltage_map_desc, - [MAX8997_LDO15] = &ldo_voltage_map_desc, - [MAX8997_LDO16] = &ldo_voltage_map_desc, - [MAX8997_LDO17] = &ldo_voltage_map_desc, - [MAX8997_LDO18] = &ldo_voltage_map_desc, - [MAX8997_LDO21] = &ldo_voltage_map_desc, - [MAX8997_BUCK1] = &buck1245_voltage_map_desc, - [MAX8997_BUCK2] = &buck1245_voltage_map_desc, - [MAX8997_BUCK3] = &buck37_voltage_map_desc, - [MAX8997_BUCK4] = &buck1245_voltage_map_desc, - [MAX8997_BUCK5] = &buck1245_voltage_map_desc, - [MAX8997_BUCK6] = NULL, - [MAX8997_BUCK7] = &buck37_voltage_map_desc, - [MAX8997_EN32KHZ_AP] = NULL, - [MAX8997_EN32KHZ_CP] = NULL, - [MAX8997_ENVICHG] = NULL, - [MAX8997_ESAFEOUT1] = NULL, - [MAX8997_ESAFEOUT2] = NULL, - [MAX8997_CHARGER_CV] = NULL, - [MAX8997_CHARGER] = &charger_current_map_desc, - [MAX8997_CHARGER_TOPOFF] = &topoff_current_map_desc, -}; - -static int max8997_list_voltage_charger_cv(struct regulator_dev *rdev, - unsigned int selector) -{ - int rid = rdev_get_id(rdev); - - if (rid != MAX8997_CHARGER_CV) - goto err; - - switch (selector) { - case 0x00: - return 4200000; - case 0x01 ... 0x0E: - return 4000000 + 20000 * (selector - 0x01); - case 0x0F: - return 4350000; - default: - return -EINVAL; - } -err: - return -EINVAL; -} - -static int max8997_list_voltage(struct regulator_dev *rdev, - unsigned int selector) -{ - const struct voltage_map_desc *desc; - int rid = rdev_get_id(rdev); - int val; - - if (rid >= ARRAY_SIZE(reg_voltage_map) || - rid < 0) - return -EINVAL; - - desc = reg_voltage_map[rid]; - if (desc == NULL) - return -EINVAL; - - val = desc->min + desc->step * selector; - if (val > desc->max) - return -EINVAL; - - return val; -} - -static int max8997_get_enable_register(struct regulator_dev *rdev, - int *reg, int *mask, int *pattern) -{ - int rid = rdev_get_id(rdev); - - switch (rid) { - case MAX8997_LDO1 ... MAX8997_LDO21: - *reg = MAX8997_REG_LDO1CTRL + (rid - MAX8997_LDO1); - *mask = 0xC0; - *pattern = 0xC0; - break; - case MAX8997_BUCK1: - *reg = MAX8997_REG_BUCK1CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK2: - *reg = MAX8997_REG_BUCK2CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK3: - *reg = MAX8997_REG_BUCK3CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK4: - *reg = MAX8997_REG_BUCK4CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK5: - *reg = MAX8997_REG_BUCK5CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK6: - *reg = MAX8997_REG_BUCK6CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_BUCK7: - *reg = MAX8997_REG_BUCK7CTRL; - *mask = 0x01; - *pattern = 0x01; - break; - case MAX8997_EN32KHZ_AP ... MAX8997_EN32KHZ_CP: - *reg = MAX8997_REG_MAINCON1; - *mask = 0x01 << (rid - MAX8997_EN32KHZ_AP); - *pattern = 0x01 << (rid - MAX8997_EN32KHZ_AP); - break; - case MAX8997_ENVICHG: - *reg = MAX8997_REG_MBCCTRL1; - *mask = 0x80; - *pattern = 0x80; - break; - case MAX8997_ESAFEOUT1 ... MAX8997_ESAFEOUT2: - *reg = MAX8997_REG_SAFEOUTCTRL; - *mask = 0x40 << (rid - MAX8997_ESAFEOUT1); - *pattern = 0x40 << (rid - MAX8997_ESAFEOUT1); - break; - case MAX8997_CHARGER: - *reg = MAX8997_REG_MBCCTRL2; - *mask = 0x40; - *pattern = 0x40; - break; - default: - /* Not controllable or not exists */ - return -EINVAL; - } - - return 0; -} - -static int max8997_reg_is_enabled(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - u8 val; - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - ret = max8997_read_reg(i2c, reg, &val); - if (ret) - return ret; - - return (val & mask) == pattern; -} - -static int max8997_reg_enable(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - return max8997_update_reg(i2c, reg, pattern, mask); -} - -static int max8997_reg_disable(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - return max8997_update_reg(i2c, reg, ~pattern, mask); -} - -static int max8997_get_voltage_register(struct regulator_dev *rdev, - int *_reg, int *_shift, int *_mask) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - int reg, shift = 0, mask = 0x3f; - - switch (rid) { - case MAX8997_LDO1 ... MAX8997_LDO21: - reg = MAX8997_REG_LDO1CTRL + (rid - MAX8997_LDO1); - break; - case MAX8997_BUCK1: - reg = MAX8997_REG_BUCK1DVS1; - if (max8997->buck1_gpiodvs) - reg += max8997->buck125_gpioindex; - break; - case MAX8997_BUCK2: - reg = MAX8997_REG_BUCK2DVS1; - if (max8997->buck2_gpiodvs) - reg += max8997->buck125_gpioindex; - break; - case MAX8997_BUCK3: - reg = MAX8997_REG_BUCK3DVS; - break; - case MAX8997_BUCK4: - reg = MAX8997_REG_BUCK4DVS; - break; - case MAX8997_BUCK5: - reg = MAX8997_REG_BUCK5DVS1; - if (max8997->buck5_gpiodvs) - reg += max8997->buck125_gpioindex; - break; - case MAX8997_BUCK7: - reg = MAX8997_REG_BUCK7DVS; - break; - case MAX8997_ESAFEOUT1 ... MAX8997_ESAFEOUT2: - reg = MAX8997_REG_SAFEOUTCTRL; - shift = (rid == MAX8997_ESAFEOUT2) ? 2 : 0; - mask = 0x3; - break; - case MAX8997_CHARGER_CV: - reg = MAX8997_REG_MBCCTRL3; - shift = 0; - mask = 0xf; - break; - case MAX8997_CHARGER: - reg = MAX8997_REG_MBCCTRL4; - shift = 0; - mask = 0xf; - break; - case MAX8997_CHARGER_TOPOFF: - reg = MAX8997_REG_MBCCTRL5; - shift = 0; - mask = 0xf; - break; - default: - return -EINVAL; - } - - *_reg = reg; - *_shift = shift; - *_mask = mask; - - return 0; -} - -static int max8997_get_voltage_sel(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int reg, shift, mask, ret; - u8 val; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - ret = max8997_read_reg(i2c, reg, &val); - if (ret) - return ret; - - val >>= shift; - val &= mask; - - return val; -} - -static inline int max8997_get_voltage_proper_val( - const struct voltage_map_desc *desc, - int min_vol, int max_vol) -{ - int i; - - if (desc == NULL) - return -EINVAL; - - if (max_vol < desc->min || min_vol > desc->max) - return -EINVAL; - - if (min_vol < desc->min) - min_vol = desc->min; - - i = DIV_ROUND_UP(min_vol - desc->min, desc->step); - - if (desc->min + desc->step * i > max_vol) - return -EINVAL; - - return i; -} - -static int max8997_set_voltage_charger_cv(struct regulator_dev *rdev, - int min_uV, int max_uV, unsigned *selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int rid = rdev_get_id(rdev); - int lb, ub; - int reg, shift = 0, mask, ret = 0; - u8 val = 0x0; - - if (rid != MAX8997_CHARGER_CV) - return -EINVAL; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - if (max_uV < 4000000 || min_uV > 4350000) - return -EINVAL; - - if (min_uV <= 4000000) { - if (max_uV >= 4000000) - return -EINVAL; - else - val = 0x1; - } else if (min_uV <= 4200000 && max_uV >= 4200000) - val = 0x0; - else { - lb = (min_uV - 4000001) / 20000 + 2; - ub = (max_uV - 4000000) / 20000 + 1; - - if (lb > ub) - return -EINVAL; - - if (lb < 0xf) - val = lb; - else { - if (ub >= 0xf) - val = 0xf; - else - return -EINVAL; - } - } - - *selector = val; - - ret = max8997_update_reg(i2c, reg, val << shift, mask); - - return ret; -} - -/* - * For LDO1 ~ LDO21, BUCK1~5, BUCK7, CHARGER, CHARGER_TOPOFF - * BUCK1, 2, and 5 are available if they are not controlled by gpio - */ -static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev, - int min_uV, int max_uV, unsigned *selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - const struct voltage_map_desc *desc; - int rid = rdev_get_id(rdev); - int i, reg, shift, mask, ret; - - switch (rid) { - case MAX8997_LDO1 ... MAX8997_LDO21: - break; - case MAX8997_BUCK1 ... MAX8997_BUCK5: - break; - case MAX8997_BUCK6: - return -EINVAL; - case MAX8997_BUCK7: - break; - case MAX8997_CHARGER: - break; - case MAX8997_CHARGER_TOPOFF: - break; - default: - return -EINVAL; - } - - desc = reg_voltage_map[rid]; - - i = max8997_get_voltage_proper_val(desc, min_uV, max_uV); - if (i < 0) - return i; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - ret = max8997_update_reg(i2c, reg, i << shift, mask << shift); - *selector = i; - - return ret; -} - -static int max8997_set_voltage_buck_time_sel(struct regulator_dev *rdev, - unsigned int old_selector, - unsigned int new_selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - const struct voltage_map_desc *desc = reg_voltage_map[rid]; - - /* Delay is required only if the voltage is increasing */ - if (old_selector >= new_selector) - return 0; - - /* No need to delay if gpio_dvs_mode */ - switch (rid) { - case MAX8997_BUCK1: - if (max8997->buck1_gpiodvs) - return 0; - break; - case MAX8997_BUCK2: - if (max8997->buck2_gpiodvs) - return 0; - break; - case MAX8997_BUCK5: - if (max8997->buck5_gpiodvs) - return 0; - break; - } - - switch (rid) { - case MAX8997_BUCK1: - case MAX8997_BUCK2: - case MAX8997_BUCK4: - case MAX8997_BUCK5: - return DIV_ROUND_UP(desc->step * (new_selector - old_selector), - max8997->ramp_delay * 1000); - } - - return 0; -} - -/* - * Assess the damage on the voltage setting of BUCK1,2,5 by the change. - * - * When GPIO-DVS mode is used for multiple bucks, changing the voltage value - * of one of the bucks may affect that of another buck, which is the side - * effect of the change (set_voltage). This function examines the GPIO-DVS - * configurations and checks whether such side-effect exists. - */ -static int max8997_assess_side_effect(struct regulator_dev *rdev, - u8 new_val, int *best) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - u8 *buckx_val[3]; - bool buckx_gpiodvs[3]; - int side_effect[8]; - int min_side_effect = INT_MAX; - int i; - - *best = -1; - - switch (rid) { - case MAX8997_BUCK1: - rid = 0; - break; - case MAX8997_BUCK2: - rid = 1; - break; - case MAX8997_BUCK5: - rid = 2; - break; - default: - return -EINVAL; - } - - buckx_val[0] = max8997->buck1_vol; - buckx_val[1] = max8997->buck2_vol; - buckx_val[2] = max8997->buck5_vol; - buckx_gpiodvs[0] = max8997->buck1_gpiodvs; - buckx_gpiodvs[1] = max8997->buck2_gpiodvs; - buckx_gpiodvs[2] = max8997->buck5_gpiodvs; - - for (i = 0; i < 8; i++) { - int others; - - if (new_val != (buckx_val[rid])[i]) { - side_effect[i] = -1; - continue; - } - - side_effect[i] = 0; - for (others = 0; others < 3; others++) { - int diff; - - if (others == rid) - continue; - if (buckx_gpiodvs[others] == false) - continue; /* Not affected */ - diff = (buckx_val[others])[i] - - (buckx_val[others])[max8997->buck125_gpioindex]; - if (diff > 0) - side_effect[i] += diff; - else if (diff < 0) - side_effect[i] -= diff; - } - if (side_effect[i] == 0) { - *best = i; - return 0; /* NO SIDE EFFECT! Use This! */ - } - if (side_effect[i] < min_side_effect) { - min_side_effect = side_effect[i]; - *best = i; - } - } - - if (*best == -1) - return -EINVAL; - - return side_effect[*best]; -} - -/* - * For Buck 1 ~ 5 and 7. If it is not controlled by GPIO, this calls - * max8997_set_voltage_ldobuck to do the job. - */ -static int max8997_set_voltage_buck(struct regulator_dev *rdev, - int min_uV, int max_uV, unsigned *selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - int rid = rdev_get_id(rdev); - const struct voltage_map_desc *desc; - int new_val, new_idx, damage, tmp_val, tmp_idx, tmp_dmg; - bool gpio_dvs_mode = false; - - if (rid < MAX8997_BUCK1 || rid > MAX8997_BUCK7) - return -EINVAL; - - switch (rid) { - case MAX8997_BUCK1: - if (max8997->buck1_gpiodvs) - gpio_dvs_mode = true; - break; - case MAX8997_BUCK2: - if (max8997->buck2_gpiodvs) - gpio_dvs_mode = true; - break; - case MAX8997_BUCK5: - if (max8997->buck5_gpiodvs) - gpio_dvs_mode = true; - break; - } - - if (!gpio_dvs_mode) - return max8997_set_voltage_ldobuck(rdev, min_uV, max_uV, - selector); - - desc = reg_voltage_map[rid]; - new_val = max8997_get_voltage_proper_val(desc, min_uV, max_uV); - if (new_val < 0) - return new_val; - - tmp_dmg = INT_MAX; - tmp_idx = -1; - tmp_val = -1; - do { - damage = max8997_assess_side_effect(rdev, new_val, &new_idx); - if (damage == 0) - goto out; - - if (tmp_dmg > damage) { - tmp_idx = new_idx; - tmp_val = new_val; - tmp_dmg = damage; - } - - new_val++; - } while (desc->min + desc->step * new_val <= desc->max); - - new_idx = tmp_idx; - new_val = tmp_val; - - if (max8997->ignore_gpiodvs_side_effect == false) - return -EINVAL; - - dev_warn(&rdev->dev, - "MAX8997 GPIO-DVS Side Effect Warning: GPIO SET: %d -> %d\n", - max8997->buck125_gpioindex, tmp_idx); - -out: - if (new_idx < 0 || new_val < 0) - return -EINVAL; - - max8997->buck125_gpioindex = new_idx; - max8997_set_gpio(max8997); - *selector = new_val; - - return 0; -} - -/* For SAFEOUT1 and SAFEOUT2 */ -static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev, - unsigned selector) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int rid = rdev_get_id(rdev); - int reg, shift = 0, mask, ret; - - if (rid != MAX8997_ESAFEOUT1 && rid != MAX8997_ESAFEOUT2) - return -EINVAL; - - ret = max8997_get_voltage_register(rdev, ®, &shift, &mask); - if (ret) - return ret; - - return max8997_update_reg(i2c, reg, selector << shift, mask << shift); -} - -static int max8997_reg_disable_suspend(struct regulator_dev *rdev) -{ - struct max8997_data *max8997 = rdev_get_drvdata(rdev); - struct i2c_client *i2c = max8997->iodev->i2c; - int ret, reg, mask, pattern; - int rid = rdev_get_id(rdev); - - ret = max8997_get_enable_register(rdev, ®, &mask, &pattern); - if (ret) - return ret; - - max8997_read_reg(i2c, reg, &max8997->saved_states[rid]); - - if (rid == MAX8997_LDO1 || - rid == MAX8997_LDO10 || - rid == MAX8997_LDO21) { - dev_dbg(&rdev->dev, "Conditional Power-Off for %s\n", - rdev->desc->name); - return max8997_update_reg(i2c, reg, 0x40, mask); - } - - dev_dbg(&rdev->dev, "Full Power-Off for %s (%xh -> %xh)\n", - rdev->desc->name, max8997->saved_states[rid] & mask, - (~pattern) & mask); - return max8997_update_reg(i2c, reg, ~pattern, mask); -} - -static struct regulator_ops max8997_ldo_ops = { - .list_voltage = max8997_list_voltage, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage = max8997_set_voltage_ldobuck, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_buck_ops = { - .list_voltage = max8997_list_voltage, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage = max8997_set_voltage_buck, - .set_voltage_time_sel = max8997_set_voltage_buck_time_sel, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_fixedvolt_ops = { - .list_voltage = max8997_list_voltage, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_safeout_ops = { - .list_voltage = regulator_list_voltage_table, - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage_sel = max8997_set_voltage_safeout_sel, - .set_suspend_disable = max8997_reg_disable_suspend, -}; - -static struct regulator_ops max8997_fixedstate_ops = { - .list_voltage = max8997_list_voltage_charger_cv, - .get_voltage_sel = max8997_get_voltage_sel, - .set_voltage = max8997_set_voltage_charger_cv, -}; - -static int max8997_set_current_limit(struct regulator_dev *rdev, - int min_uA, int max_uA) -{ - unsigned dummy; - int rid = rdev_get_id(rdev); - - if (rid != MAX8997_CHARGER && rid != MAX8997_CHARGER_TOPOFF) - return -EINVAL; - - /* Reuse max8997_set_voltage_ldobuck to set current_limit. */ - return max8997_set_voltage_ldobuck(rdev, min_uA, max_uA, &dummy); -} - -static int max8997_get_current_limit(struct regulator_dev *rdev) -{ - int sel, rid = rdev_get_id(rdev); - - if (rid != MAX8997_CHARGER && rid != MAX8997_CHARGER_TOPOFF) - return -EINVAL; - - sel = max8997_get_voltage_sel(rdev); - if (sel < 0) - return sel; - - /* Reuse max8997_list_voltage to get current_limit. */ - return max8997_list_voltage(rdev, sel); -} - -static struct regulator_ops max8997_charger_ops = { - .is_enabled = max8997_reg_is_enabled, - .enable = max8997_reg_enable, - .disable = max8997_reg_disable, - .get_current_limit = max8997_get_current_limit, - .set_current_limit = max8997_set_current_limit, -}; - -static struct regulator_ops max8997_charger_fixedstate_ops = { - .get_current_limit = max8997_get_current_limit, - .set_current_limit = max8997_set_current_limit, -}; - -#define MAX8997_VOLTAGE_REGULATOR(_name, _ops) {\ - .name = #_name, \ - .id = MAX8997_##_name, \ - .ops = &_ops, \ - .type = REGULATOR_VOLTAGE, \ - .owner = THIS_MODULE, \ -} - -#define MAX8997_CURRENT_REGULATOR(_name, _ops) {\ - .name = #_name, \ - .id = MAX8997_##_name, \ - .ops = &_ops, \ - .type = REGULATOR_CURRENT, \ - .owner = THIS_MODULE, \ -} - -static struct regulator_desc regulators[] = { - MAX8997_VOLTAGE_REGULATOR(LDO1, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO2, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO3, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO4, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO5, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO6, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO7, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO8, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO9, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO10, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO11, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO12, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO13, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO14, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO15, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO16, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO17, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO18, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(LDO21, max8997_ldo_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK1, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK2, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK3, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK4, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK5, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK6, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(BUCK7, max8997_buck_ops), - MAX8997_VOLTAGE_REGULATOR(EN32KHZ_AP, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(EN32KHZ_CP, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(ENVICHG, max8997_fixedvolt_ops), - MAX8997_VOLTAGE_REGULATOR(ESAFEOUT1, max8997_safeout_ops), - MAX8997_VOLTAGE_REGULATOR(ESAFEOUT2, max8997_safeout_ops), - MAX8997_VOLTAGE_REGULATOR(CHARGER_CV, max8997_fixedstate_ops), - MAX8997_CURRENT_REGULATOR(CHARGER, max8997_charger_ops), - MAX8997_CURRENT_REGULATOR(CHARGER_TOPOFF, - max8997_charger_fixedstate_ops), -}; - -#ifdef CONFIG_OF -static int max8997_pmic_dt_parse_dvs_gpio(struct platform_device *pdev, - struct max8997_platform_data *pdata, - struct device_node *pmic_np) -{ - int i, gpio; - - for (i = 0; i < 3; i++) { - gpio = of_get_named_gpio(pmic_np, - "max8997,pmic-buck125-dvs-gpios", i); - if (!gpio_is_valid(gpio)) { - dev_err(&pdev->dev, "invalid gpio[%d]: %d\n", i, gpio); - return -EINVAL; - } - pdata->buck125_gpios[i] = gpio; - } - return 0; -} - -static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev, - struct max8997_platform_data *pdata) -{ - struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct device_node *pmic_np, *regulators_np, *reg_np; - struct max8997_regulator_data *rdata; - unsigned int i, dvs_voltage_nr = 1, ret; - - pmic_np = iodev->dev->of_node; - if (!pmic_np) { - dev_err(&pdev->dev, "could not find pmic sub-node\n"); - return -ENODEV; - } - - regulators_np = of_get_child_by_name(pmic_np, "regulators"); - if (!regulators_np) { - dev_err(&pdev->dev, "could not find regulators sub-node\n"); - return -EINVAL; - } - - /* count the number of regulators to be supported in pmic */ - pdata->num_regulators = of_get_child_count(regulators_np); - - rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) * - pdata->num_regulators, GFP_KERNEL); - if (!rdata) { - of_node_put(regulators_np); - return -ENOMEM; - } - - pdata->regulators = rdata; - for_each_child_of_node(regulators_np, reg_np) { - for (i = 0; i < ARRAY_SIZE(regulators); i++) - if (!of_node_cmp(reg_np->name, regulators[i].name)) - break; - - if (i == ARRAY_SIZE(regulators)) { - dev_warn(&pdev->dev, "don't know how to configure regulator %s\n", - reg_np->name); - continue; - } - - rdata->id = i; - rdata->initdata = of_get_regulator_init_data(&pdev->dev, - reg_np, - ®ulators[i]); - rdata->reg_node = reg_np; - rdata++; - } - of_node_put(regulators_np); - - if (of_get_property(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs", NULL)) - pdata->buck1_gpiodvs = true; - - if (of_get_property(pmic_np, "max8997,pmic-buck2-uses-gpio-dvs", NULL)) - pdata->buck2_gpiodvs = true; - - if (of_get_property(pmic_np, "max8997,pmic-buck5-uses-gpio-dvs", NULL)) - pdata->buck5_gpiodvs = true; - - if (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || - pdata->buck5_gpiodvs) { - ret = max8997_pmic_dt_parse_dvs_gpio(pdev, pdata, pmic_np); - if (ret) - return -EINVAL; - - if (of_property_read_u32(pmic_np, - "max8997,pmic-buck125-default-dvs-idx", - &pdata->buck125_default_idx)) { - pdata->buck125_default_idx = 0; - } else { - if (pdata->buck125_default_idx >= 8) { - pdata->buck125_default_idx = 0; - dev_info(&pdev->dev, "invalid value for default dvs index, using 0 instead\n"); - } - } - - if (of_get_property(pmic_np, - "max8997,pmic-ignore-gpiodvs-side-effect", NULL)) - pdata->ignore_gpiodvs_side_effect = true; - - dvs_voltage_nr = 8; - } - - if (of_property_read_u32_array(pmic_np, - "max8997,pmic-buck1-dvs-voltage", - pdata->buck1_voltage, dvs_voltage_nr)) { - dev_err(&pdev->dev, "buck1 voltages not specified\n"); - return -EINVAL; - } - - if (of_property_read_u32_array(pmic_np, - "max8997,pmic-buck2-dvs-voltage", - pdata->buck2_voltage, dvs_voltage_nr)) { - dev_err(&pdev->dev, "buck2 voltages not specified\n"); - return -EINVAL; - } - - if (of_property_read_u32_array(pmic_np, - "max8997,pmic-buck5-dvs-voltage", - pdata->buck5_voltage, dvs_voltage_nr)) { - dev_err(&pdev->dev, "buck5 voltages not specified\n"); - return -EINVAL; - } - - return 0; -} -#else -static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev, - struct max8997_platform_data *pdata) -{ - return 0; -} -#endif /* CONFIG_OF */ - -static int max8997_pmic_probe(struct platform_device *pdev) -{ - struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); - struct max8997_platform_data *pdata = iodev->pdata; - struct regulator_config config = { }; - struct regulator_dev *rdev; - struct max8997_data *max8997; - struct i2c_client *i2c; - int i, ret, nr_dvs; - u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0; - - if (!pdata) { - dev_err(&pdev->dev, "No platform init data supplied.\n"); - return -ENODEV; - } - - if (iodev->dev->of_node) { - ret = max8997_pmic_dt_parse_pdata(pdev, pdata); - if (ret) - return ret; - } - - max8997 = devm_kzalloc(&pdev->dev, sizeof(struct max8997_data), - GFP_KERNEL); - if (!max8997) - return -ENOMEM; - - max8997->dev = &pdev->dev; - max8997->iodev = iodev; - max8997->num_regulators = pdata->num_regulators; - platform_set_drvdata(pdev, max8997); - i2c = max8997->iodev->i2c; - - max8997->buck125_gpioindex = pdata->buck125_default_idx; - max8997->buck1_gpiodvs = pdata->buck1_gpiodvs; - max8997->buck2_gpiodvs = pdata->buck2_gpiodvs; - max8997->buck5_gpiodvs = pdata->buck5_gpiodvs; - memcpy(max8997->buck125_gpios, pdata->buck125_gpios, sizeof(int) * 3); - max8997->ignore_gpiodvs_side_effect = pdata->ignore_gpiodvs_side_effect; - - nr_dvs = (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || - pdata->buck5_gpiodvs) ? 8 : 1; - - for (i = 0; i < nr_dvs; i++) { - max8997->buck1_vol[i] = ret = - max8997_get_voltage_proper_val( - &buck1245_voltage_map_desc, - pdata->buck1_voltage[i], - pdata->buck1_voltage[i] + - buck1245_voltage_map_desc.step); - if (ret < 0) - return ret; - - max8997->buck2_vol[i] = ret = - max8997_get_voltage_proper_val( - &buck1245_voltage_map_desc, - pdata->buck2_voltage[i], - pdata->buck2_voltage[i] + - buck1245_voltage_map_desc.step); - if (ret < 0) - return ret; - - max8997->buck5_vol[i] = ret = - max8997_get_voltage_proper_val( - &buck1245_voltage_map_desc, - pdata->buck5_voltage[i], - pdata->buck5_voltage[i] + - buck1245_voltage_map_desc.step); - if (ret < 0) - return ret; - - if (max_buck1 < max8997->buck1_vol[i]) - max_buck1 = max8997->buck1_vol[i]; - if (max_buck2 < max8997->buck2_vol[i]) - max_buck2 = max8997->buck2_vol[i]; - if (max_buck5 < max8997->buck5_vol[i]) - max_buck5 = max8997->buck5_vol[i]; - } - - /* For the safety, set max voltage before setting up */ - for (i = 0; i < 8; i++) { - max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i, - max_buck1, 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i, - max_buck2, 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i, - max_buck5, 0x3f); - } - - /* Initialize all the DVS related BUCK registers */ - for (i = 0; i < nr_dvs; i++) { - max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i, - max8997->buck1_vol[i], - 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i, - max8997->buck2_vol[i], - 0x3f); - max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i, - max8997->buck5_vol[i], - 0x3f); - } - - /* - * If buck 1, 2, and 5 do not care DVS GPIO settings, ignore them. - * If at least one of them cares, set gpios. - */ - if (pdata->buck1_gpiodvs || pdata->buck2_gpiodvs || - pdata->buck5_gpiodvs) { - - if (!gpio_is_valid(pdata->buck125_gpios[0]) || - !gpio_is_valid(pdata->buck125_gpios[1]) || - !gpio_is_valid(pdata->buck125_gpios[2])) { - dev_err(&pdev->dev, "GPIO NOT VALID\n"); - return -EINVAL; - } - - ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[0], - "MAX8997 SET1"); - if (ret) - return ret; - - ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[1], - "MAX8997 SET2"); - if (ret) - return ret; - - ret = devm_gpio_request(&pdev->dev, pdata->buck125_gpios[2], - "MAX8997 SET3"); - if (ret) - return ret; - - gpio_direction_output(pdata->buck125_gpios[0], - (max8997->buck125_gpioindex >> 2) - & 0x1); /* SET1 */ - gpio_direction_output(pdata->buck125_gpios[1], - (max8997->buck125_gpioindex >> 1) - & 0x1); /* SET2 */ - gpio_direction_output(pdata->buck125_gpios[2], - (max8997->buck125_gpioindex >> 0) - & 0x1); /* SET3 */ - } - - /* DVS-GPIO disabled */ - max8997_update_reg(i2c, MAX8997_REG_BUCK1CTRL, (pdata->buck1_gpiodvs) ? - (1 << 1) : (0 << 1), 1 << 1); - max8997_update_reg(i2c, MAX8997_REG_BUCK2CTRL, (pdata->buck2_gpiodvs) ? - (1 << 1) : (0 << 1), 1 << 1); - max8997_update_reg(i2c, MAX8997_REG_BUCK5CTRL, (pdata->buck5_gpiodvs) ? - (1 << 1) : (0 << 1), 1 << 1); - - /* Misc Settings */ - max8997->ramp_delay = 10; /* set 10mV/us, which is the default */ - max8997_write_reg(i2c, MAX8997_REG_BUCKRAMP, (0xf << 4) | 0x9); - - for (i = 0; i < pdata->num_regulators; i++) { - const struct voltage_map_desc *desc; - int id = pdata->regulators[i].id; - - desc = reg_voltage_map[id]; - if (desc) { - regulators[id].n_voltages = - (desc->max - desc->min) / desc->step + 1; - } else if (id == MAX8997_ESAFEOUT1 || id == MAX8997_ESAFEOUT2) { - regulators[id].volt_table = safeoutvolt; - regulators[id].n_voltages = ARRAY_SIZE(safeoutvolt); - } else if (id == MAX8997_CHARGER_CV) { - regulators[id].n_voltages = 16; - } - - config.dev = max8997->dev; - config.init_data = pdata->regulators[i].initdata; - config.driver_data = max8997; - config.of_node = pdata->regulators[i].reg_node; - - rdev = devm_regulator_register(&pdev->dev, ®ulators[id], - &config); - if (IS_ERR(rdev)) { - dev_err(max8997->dev, "regulator init failed for %d\n", - id); - return PTR_ERR(rdev); - } - } - - return 0; -} - -static const struct platform_device_id max8997_pmic_id[] = { - { "max8997-pmic", 0}, - { }, -}; -MODULE_DEVICE_TABLE(platform, max8997_pmic_id); - -static struct platform_driver max8997_pmic_driver = { - .driver = { - .name = "max8997-pmic", - }, - .probe = max8997_pmic_probe, - .id_table = max8997_pmic_id, -}; - -static int __init max8997_pmic_init(void) -{ - return platform_driver_register(&max8997_pmic_driver); -} -subsys_initcall(max8997_pmic_init); - -static void __exit max8997_pmic_cleanup(void) -{ - platform_driver_unregister(&max8997_pmic_driver); -} -module_exit(max8997_pmic_cleanup); - -MODULE_DESCRIPTION("MAXIM 8997/8966 Regulator Driver"); -MODULE_AUTHOR("MyungJoo Ham "); -MODULE_LICENSE("GPL"); -- cgit v1.2.3-54-g00ecf