Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * tps62360.c -- TI tps62360
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Driver for processor core supply tps62360, tps62361B, tps62362 and tps62363.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (c) 2012, NVIDIA Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * Author: Laxman Dewangan <ldewangan@nvidia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * This program is free software; you can redistribute it and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * modify it under the terms of the GNU General Public License as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * published by the Free Software Foundation version 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * whether express or implied; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * along with this program; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  * 02111-1307, USA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <linux/of_gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <linux/regulator/of_regulator.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <linux/regulator/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <linux/regulator/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #include <linux/regulator/tps62360.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) /* Register definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define REG_VSET0		0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define REG_VSET1		1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define REG_VSET2		2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define REG_VSET3		3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define REG_CONTROL		4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #define REG_TEMP		5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #define REG_RAMPCTRL		6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #define REG_CHIPID		8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define FORCE_PWM_ENABLE	BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) enum chips {TPS62360, TPS62361, TPS62362, TPS62363};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) #define TPS62360_BASE_VOLTAGE	770000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) #define TPS62360_N_VOLTAGES	64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) #define TPS62361_BASE_VOLTAGE	500000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) #define TPS62361_N_VOLTAGES	128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) /* tps 62360 chip information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) struct tps62360_chip {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct regulator_desc desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	int vsel0_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	int vsel1_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	u8 voltage_reg_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	bool en_internal_pulldn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	bool en_discharge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	bool valid_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	int lru_index[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	int curr_vset_vsel[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	int curr_vset_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80)  * find_voltage_set_register: Find new voltage configuration register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81)  * (VSET) id.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82)  * The finding of the new VSET register will be based on the LRU mechanism.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83)  * Each VSET register will have different voltage configured . This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84)  * Function will look if any of the VSET register have requested voltage set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85)  * or not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86)  *     - If it is already there then it will make that register as most
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87)  *       recently used and return as found so that caller need not to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88)  *       the VSET register but need to set the proper gpios to select this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89)  *       VSET register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90)  *     - If requested voltage is not found then it will use the least
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91)  *       recently mechanism to get new VSET register for new configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92)  *       and will return not_found so that caller need to set new VSET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93)  *       register and then gpios (both).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) static bool find_voltage_set_register(struct tps62360_chip *tps,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		int req_vsel, int *vset_reg_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	int new_vset_reg = tps->lru_index[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	int found_index = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	for (i = 0; i < 4; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		if (tps->curr_vset_vsel[tps->lru_index[i]] == req_vsel) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 			new_vset_reg = tps->lru_index[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 			found_index = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			goto update_lru_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) update_lru_index:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	for (i = found_index; i > 0; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		tps->lru_index[i] = tps->lru_index[i - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	tps->lru_index[0] = new_vset_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	*vset_reg_id = new_vset_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static int tps62360_dcdc_get_voltage_sel(struct regulator_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	struct tps62360_chip *tps = rdev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	int vsel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	unsigned int data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			__func__, REG_VSET0 + tps->curr_vset_id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	vsel = (int)data & tps->voltage_reg_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	return vsel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static int tps62360_dcdc_set_voltage_sel(struct regulator_dev *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 					 unsigned selector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	struct tps62360_chip *tps = rdev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	int new_vset_id = tps->curr_vset_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	 * If gpios are available to select the VSET register then least
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	 * recently used register for new configuration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	if (tps->valid_gpios)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		found = find_voltage_set_register(tps, selector, &new_vset_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	if (!found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		ret = regmap_update_bits(tps->regmap, REG_VSET0 + new_vset_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 				tps->voltage_reg_mask, selector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 				"%s(): register %d update failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 				 __func__, REG_VSET0 + new_vset_id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		tps->curr_vset_id = new_vset_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		tps->curr_vset_vsel[new_vset_id] = selector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	/* Select proper VSET register vio gpios */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	if (tps->valid_gpios) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		gpio_set_value_cansleep(tps->vsel0_gpio, new_vset_id & 0x1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		gpio_set_value_cansleep(tps->vsel1_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 					(new_vset_id >> 1) & 0x1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static int tps62360_set_mode(struct regulator_dev *rdev, unsigned int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	struct tps62360_chip *tps = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	/* Enable force PWM mode in FAST mode only. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	switch (mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	case REGULATOR_MODE_FAST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		val = FORCE_PWM_ENABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	case REGULATOR_MODE_NORMAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	if (!tps->valid_gpios) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		ret = regmap_update_bits(tps->regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 			REG_VSET0 + tps->curr_vset_id, FORCE_PWM_ENABLE, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 				"%s(): register %d update failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 				__func__, REG_VSET0 + tps->curr_vset_id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	/* If gpios are valid then all register set need to be control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	for (i = 0; i < 4; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		ret = regmap_update_bits(tps->regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 					REG_VSET0 + i, FORCE_PWM_ENABLE, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 				"%s(): register %d update failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 				__func__, REG_VSET0 + i, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static unsigned int tps62360_get_mode(struct regulator_dev *rdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	struct tps62360_chip *tps = rdev_get_drvdata(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	unsigned int data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 			__func__, REG_VSET0 + tps->curr_vset_id, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	return (data & FORCE_PWM_ENABLE) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 				REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static const struct regulator_ops tps62360_dcdc_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	.get_voltage_sel	= tps62360_dcdc_get_voltage_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	.set_voltage_sel	= tps62360_dcdc_set_voltage_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	.list_voltage		= regulator_list_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	.map_voltage		= regulator_map_voltage_linear,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	.set_mode		= tps62360_set_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	.get_mode		= tps62360_get_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int tps62360_init_dcdc(struct tps62360_chip *tps,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		struct tps62360_regulator_platform_data *pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	unsigned int ramp_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	/* Initialize internal pull up/down control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	if (tps->en_internal_pulldn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		ret = regmap_write(tps->regmap, REG_CONTROL, 0xE0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		ret = regmap_write(tps->regmap, REG_CONTROL, 0x0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 			"%s(): register %d write failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 			__func__, REG_CONTROL, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	/* Reset output discharge path to reduce power consumption */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	ret = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 			"%s(): register %d update failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 			__func__, REG_RAMPCTRL, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	/* Get ramp value from ramp control register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	ret = regmap_read(tps->regmap, REG_RAMPCTRL, &ramp_ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 			"%s(): register %d read failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 			__func__, REG_RAMPCTRL, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	ramp_ctrl = (ramp_ctrl >> 5) & 0x7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	/* ramp mV/us = 32/(2^ramp_ctrl) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	tps->desc.ramp_delay = DIV_ROUND_UP(32000, BIT(ramp_ctrl));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static const struct regmap_config tps62360_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	.reg_bits		= 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	.val_bits		= 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	.max_register		= REG_CHIPID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	.cache_type		= REGCACHE_RBTREE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static struct tps62360_regulator_platform_data *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	of_get_tps62360_platform_data(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 				      const struct regulator_desc *desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	struct tps62360_regulator_platform_data *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	struct device_node *np = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 							  desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	if (!pdata->reg_init_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		dev_err(dev, "Not able to get OF regulator init data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	pdata->vsel0_gpio = of_get_named_gpio(np, "vsel0-gpio", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	pdata->vsel1_gpio = of_get_named_gpio(np, "vsel1-gpio", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	if (of_find_property(np, "ti,vsel0-state-high", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		pdata->vsel0_def_state = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	if (of_find_property(np, "ti,vsel1-state-high", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		pdata->vsel1_def_state = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	if (of_find_property(np, "ti,enable-pull-down", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		pdata->en_internal_pulldn = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	if (of_find_property(np, "ti,enable-vout-discharge", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		pdata->en_discharge = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	return pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) #if defined(CONFIG_OF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static const struct of_device_id tps62360_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	 { .compatible = "ti,tps62360", .data = (void *)TPS62360},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	 { .compatible = "ti,tps62361", .data = (void *)TPS62361},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	 { .compatible = "ti,tps62362", .data = (void *)TPS62362},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	 { .compatible = "ti,tps62363", .data = (void *)TPS62363},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) MODULE_DEVICE_TABLE(of, tps62360_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static int tps62360_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 				     const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	struct regulator_config config = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	struct tps62360_regulator_platform_data *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	struct regulator_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	struct tps62360_chip *tps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	int chip_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	pdata = dev_get_platdata(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	if (!tps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	tps->desc.name = client->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	tps->desc.id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	tps->desc.ops = &tps62360_dcdc_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	tps->desc.type = REGULATOR_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	tps->desc.owner = THIS_MODULE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	tps->desc.uV_step = 10000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	if (client->dev.of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 		const struct of_device_id *match;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		match = of_match_device(of_match_ptr(tps62360_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 				&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 		if (!match) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 			dev_err(&client->dev, "Error: No device match found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 			return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 		chip_id = (int)(long)match->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 		if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 			pdata = of_get_tps62360_platform_data(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 							      &tps->desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	} else if (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 		chip_id = id->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 		dev_err(&client->dev, "No device tree match or id table match found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	if (!pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 		dev_err(&client->dev, "%s(): Platform data not found\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 						__func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	tps->en_discharge = pdata->en_discharge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	tps->en_internal_pulldn = pdata->en_internal_pulldn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	tps->vsel0_gpio = pdata->vsel0_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	tps->vsel1_gpio = pdata->vsel1_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	tps->dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	switch (chip_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	case TPS62360:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	case TPS62362:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 		tps->desc.min_uV = TPS62360_BASE_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 		tps->voltage_reg_mask = 0x3F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		tps->desc.n_voltages = TPS62360_N_VOLTAGES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	case TPS62361:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	case TPS62363:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 		tps->desc.min_uV = TPS62361_BASE_VOLTAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		tps->voltage_reg_mask = 0x7F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 		tps->desc.n_voltages = TPS62361_N_VOLTAGES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	tps->regmap = devm_regmap_init_i2c(client, &tps62360_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 	if (IS_ERR(tps->regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 		ret = PTR_ERR(tps->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 		dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 			"%s(): regmap allocation failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 			__func__, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	i2c_set_clientdata(client, tps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	tps->curr_vset_id = (pdata->vsel1_def_state & 1) * 2 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 				(pdata->vsel0_def_state & 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	tps->lru_index[0] = tps->curr_vset_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	tps->valid_gpios = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	if (gpio_is_valid(tps->vsel0_gpio) && gpio_is_valid(tps->vsel1_gpio)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 		int gpio_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 		gpio_flags = (pdata->vsel0_def_state) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 				GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 		ret = devm_gpio_request_one(&client->dev, tps->vsel0_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 				gpio_flags, "tps62360-vsel0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 		if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 			dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 				"%s(): Could not obtain vsel0 GPIO %d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 				__func__, tps->vsel0_gpio, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 		gpio_flags = (pdata->vsel1_def_state) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 				GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 		ret = devm_gpio_request_one(&client->dev, tps->vsel1_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 				gpio_flags, "tps62360-vsel1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 		if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 			dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 				"%s(): Could not obtain vsel1 GPIO %d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) 				__func__, tps->vsel1_gpio, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 		tps->valid_gpios = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 		 * Initialize the lru index with vset_reg id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 		 * The index 0 will be most recently used and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 		 * set with the tps->curr_vset_id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 		for (i = 0; i < 4; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 			tps->lru_index[i] = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 		tps->lru_index[0] = tps->curr_vset_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) 		tps->lru_index[tps->curr_vset_id] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 	ret = tps62360_init_dcdc(tps, pdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 		dev_err(tps->dev, "%s(): Init failed with err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 				__func__, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 	config.dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 	config.init_data = pdata->reg_init_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 	config.driver_data = tps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 	config.of_node = client->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 	/* Register the regulators */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 	rdev = devm_regulator_register(&client->dev, &tps->desc, &config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 	if (IS_ERR(rdev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 		dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 			"%s(): regulator register failed with err %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 			__func__, id->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 		return PTR_ERR(rdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 	tps->rdev = rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) static void tps62360_shutdown(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 	struct tps62360_chip *tps = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) 	int st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 	if (!tps->en_discharge)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 	/* Configure the output discharge path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) 	st = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), BIT(2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 	if (st < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 		dev_err(tps->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 			"%s(): register %d update failed with err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 			__func__, REG_RAMPCTRL, st);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) static const struct i2c_device_id tps62360_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) 	{.name = "tps62360", .driver_data = TPS62360},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) 	{.name = "tps62361", .driver_data = TPS62361},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 	{.name = "tps62362", .driver_data = TPS62362},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) 	{.name = "tps62363", .driver_data = TPS62363},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) MODULE_DEVICE_TABLE(i2c, tps62360_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) static struct i2c_driver tps62360_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 		.name = "tps62360",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) 		.of_match_table = of_match_ptr(tps62360_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) 	.probe = tps62360_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) 	.shutdown = tps62360_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 	.id_table = tps62360_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) static int __init tps62360_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) 	return i2c_add_driver(&tps62360_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) subsys_initcall(tps62360_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) static void __exit tps62360_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) 	i2c_del_driver(&tps62360_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) module_exit(tps62360_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) MODULE_DESCRIPTION("TPS6236x voltage regulator driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) MODULE_LICENSE("GPL v2");