Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) // Copyright (C) 2018 BayLibre SAS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) // Author: Bartosz Golaszewski <bgolaszewski@baylibre.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) // Battery charger driver for MAXIM 77650/77651 charger/power-supply.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/mfd/max77650.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/power_supply.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #define MAX77650_CHARGER_ENABLED		BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #define MAX77650_CHARGER_DISABLED		0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define MAX77650_CHARGER_CHG_EN_MASK		BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define MAX77650_CHG_DETAILS_MASK		GENMASK(7, 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define MAX77650_CHG_DETAILS_BITS(_reg) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 		(((_reg) & MAX77650_CHG_DETAILS_MASK) >> 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) /* Charger is OFF. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define MAX77650_CHG_OFF			0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) /* Charger is in prequalification mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define MAX77650_CHG_PREQ			0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) /* Charger is in fast-charge constant current mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define MAX77650_CHG_ON_CURR			0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) /* Charger is in JEITA modified fast-charge constant-current mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define MAX77650_CHG_ON_CURR_JEITA		0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) /* Charger is in fast-charge constant-voltage mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define MAX77650_CHG_ON_VOLT			0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) /* Charger is in JEITA modified fast-charge constant-voltage mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define MAX77650_CHG_ON_VOLT_JEITA		0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) /* Charger is in top-off mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define MAX77650_CHG_ON_TOPOFF			0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) /* Charger is in JEITA modified top-off mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define MAX77650_CHG_ON_TOPOFF_JEITA		0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) /* Charger is done. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define MAX77650_CHG_DONE			0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) /* Charger is JEITA modified done. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define MAX77650_CHG_DONE_JEITA			0x09
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) /* Charger is suspended due to a prequalification timer fault. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define MAX77650_CHG_SUSP_PREQ_TIM_FAULT	0x0a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) /* Charger is suspended due to a fast-charge timer fault. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define MAX77650_CHG_SUSP_FAST_CHG_TIM_FAULT	0x0b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) /* Charger is suspended due to a battery temperature fault. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #define MAX77650_CHG_SUSP_BATT_TEMP_FAULT	0x0c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #define MAX77650_CHGIN_DETAILS_MASK		GENMASK(3, 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define MAX77650_CHGIN_DETAILS_BITS(_reg) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		(((_reg) & MAX77650_CHGIN_DETAILS_MASK) >> 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define MAX77650_CHGIN_UNDERVOLTAGE_LOCKOUT	0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) #define MAX77650_CHGIN_OVERVOLTAGE_LOCKOUT	0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) #define MAX77650_CHGIN_OKAY			0x11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) #define MAX77650_CHARGER_CHG_MASK	BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) #define MAX77650_CHARGER_CHG_CHARGING(_reg) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		(((_reg) & MAX77650_CHARGER_CHG_MASK) > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) #define MAX77650_CHARGER_VCHGIN_MIN_MASK	0xc0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define MAX77650_CHARGER_VCHGIN_MIN_SHIFT(_val)	((_val) << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define MAX77650_CHARGER_ICHGIN_LIM_MASK	0x1c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) #define MAX77650_CHARGER_ICHGIN_LIM_SHIFT(_val)	((_val) << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) struct max77650_charger_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	struct regmap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) static enum power_supply_property max77650_charger_properties[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	POWER_SUPPLY_PROP_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	POWER_SUPPLY_PROP_ONLINE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	POWER_SUPPLY_PROP_CHARGE_TYPE
^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) static const unsigned int max77650_charger_vchgin_min_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	4000000, 4100000, 4200000, 4300000, 4400000, 4500000, 4600000, 4700000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) static const unsigned int max77650_charger_ichgin_lim_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	95000, 190000, 285000, 380000, 475000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) static int max77650_charger_set_vchgin_min(struct max77650_charger_data *chg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 					   unsigned int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	int i, rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	for (i = 0; i < ARRAY_SIZE(max77650_charger_vchgin_min_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		if (val == max77650_charger_vchgin_min_table[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			rv = regmap_update_bits(chg->map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 					MAX77650_REG_CNFG_CHG_B,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 					MAX77650_CHARGER_VCHGIN_MIN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 					MAX77650_CHARGER_VCHGIN_MIN_SHIFT(i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 				return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 			return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static int max77650_charger_set_ichgin_lim(struct max77650_charger_data *chg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 					   unsigned int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	int i, rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	for (i = 0; i < ARRAY_SIZE(max77650_charger_ichgin_lim_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		if (val == max77650_charger_ichgin_lim_table[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 			rv = regmap_update_bits(chg->map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 					MAX77650_REG_CNFG_CHG_B,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 					MAX77650_CHARGER_ICHGIN_LIM_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 					MAX77650_CHARGER_ICHGIN_LIM_SHIFT(i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 			if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 				return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 			return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static int max77650_charger_enable(struct max77650_charger_data *chg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	rv = regmap_update_bits(chg->map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 				MAX77650_REG_CNFG_CHG_B,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 				MAX77650_CHARGER_CHG_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 				MAX77650_CHARGER_ENABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		dev_err(chg->dev, "unable to enable the charger: %d\n", rv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int max77650_charger_disable(struct max77650_charger_data *chg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	rv = regmap_update_bits(chg->map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 				MAX77650_REG_CNFG_CHG_B,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 				MAX77650_CHARGER_CHG_EN_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 				MAX77650_CHARGER_DISABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		dev_err(chg->dev, "unable to disable the charger: %d\n", rv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static irqreturn_t max77650_charger_check_status(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	struct max77650_charger_data *chg = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	int rv, reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	if (rv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		dev_err(chg->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			"unable to read the charger status: %d\n", rv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	switch (MAX77650_CHGIN_DETAILS_BITS(reg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	case MAX77650_CHGIN_UNDERVOLTAGE_LOCKOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		dev_err(chg->dev, "undervoltage lockout detected, disabling charger\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		max77650_charger_disable(chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	case MAX77650_CHGIN_OVERVOLTAGE_LOCKOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		dev_err(chg->dev, "overvoltage lockout detected, disabling charger\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		max77650_charger_disable(chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	case MAX77650_CHGIN_OKAY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		max77650_charger_enable(chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		/* May be 0x10 - debouncing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static int max77650_charger_get_property(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 					 enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 					 union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	struct max77650_charger_data *chg = power_supply_get_drvdata(psy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	int rv, reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	case POWER_SUPPLY_PROP_STATUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		if (MAX77650_CHARGER_CHG_CHARGING(reg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		switch (MAX77650_CHG_DETAILS_BITS(reg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		case MAX77650_CHG_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		case MAX77650_CHG_SUSP_PREQ_TIM_FAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		case MAX77650_CHG_SUSP_FAST_CHG_TIM_FAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		case MAX77650_CHG_SUSP_BATT_TEMP_FAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		case MAX77650_CHG_PREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		case MAX77650_CHG_ON_CURR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		case MAX77650_CHG_ON_CURR_JEITA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		case MAX77650_CHG_ON_VOLT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		case MAX77650_CHG_ON_VOLT_JEITA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		case MAX77650_CHG_ON_TOPOFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		case MAX77650_CHG_ON_TOPOFF_JEITA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		case MAX77650_CHG_DONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 			val->intval = POWER_SUPPLY_STATUS_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	case POWER_SUPPLY_PROP_ONLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 			return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		val->intval = MAX77650_CHARGER_CHG_CHARGING(reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	case POWER_SUPPLY_PROP_CHARGE_TYPE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 			return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		if (!MAX77650_CHARGER_CHG_CHARGING(reg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		switch (MAX77650_CHG_DETAILS_BITS(reg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		case MAX77650_CHG_PREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		case MAX77650_CHG_ON_CURR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		case MAX77650_CHG_ON_CURR_JEITA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		case MAX77650_CHG_ON_VOLT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		case MAX77650_CHG_ON_VOLT_JEITA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 			val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		case MAX77650_CHG_ON_TOPOFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		case MAX77650_CHG_ON_TOPOFF_JEITA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 			val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static const struct power_supply_desc max77650_battery_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	.name		= "max77650",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	.type		= POWER_SUPPLY_TYPE_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	.get_property	= max77650_charger_get_property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	.properties	= max77650_charger_properties,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	.num_properties	= ARRAY_SIZE(max77650_charger_properties),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) static int max77650_charger_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	struct power_supply_config pscfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	struct max77650_charger_data *chg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	struct power_supply *battery;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	struct device *dev, *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	int rv, chg_irq, chgin_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	unsigned int prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	parent = dev->parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	chg = devm_kzalloc(dev, sizeof(*chg), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	if (!chg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	platform_set_drvdata(pdev, chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	chg->map = dev_get_regmap(parent, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	if (!chg->map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	chg->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	pscfg.of_node = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	pscfg.drv_data = chg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	chg_irq = platform_get_irq_byname(pdev, "CHG");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	if (chg_irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		return chg_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	chgin_irq = platform_get_irq_byname(pdev, "CHGIN");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	if (chgin_irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 		return chgin_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	rv = devm_request_any_context_irq(dev, chg_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 					  max77650_charger_check_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 					  IRQF_ONESHOT, "chg", chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	if (rv < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	rv = devm_request_any_context_irq(dev, chgin_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 					  max77650_charger_check_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 					  IRQF_ONESHOT, "chgin", chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	if (rv < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	battery = devm_power_supply_register(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 					     &max77650_battery_desc, &pscfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	if (IS_ERR(battery))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		return PTR_ERR(battery);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	rv = of_property_read_u32(dev->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 				  "input-voltage-min-microvolt", &prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	if (rv == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		rv = max77650_charger_set_vchgin_min(chg, prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 		if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 			return rv;
^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) 	rv = of_property_read_u32(dev->of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 				  "input-current-limit-microamp", &prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	if (rv == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		rv = max77650_charger_set_ichgin_lim(chg, prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		if (rv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 			return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	return max77650_charger_enable(chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static int max77650_charger_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	struct max77650_charger_data *chg = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	return max77650_charger_disable(chg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static const struct of_device_id max77650_charger_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	{ .compatible = "maxim,max77650-charger" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) MODULE_DEVICE_TABLE(of, max77650_charger_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static struct platform_driver max77650_charger_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 		.name = "max77650-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 		.of_match_table = max77650_charger_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	.probe = max77650_charger_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	.remove = max77650_charger_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) module_platform_driver(max77650_charger_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) MODULE_DESCRIPTION("MAXIM 77650/77651 charger driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) MODULE_AUTHOR("Bartosz Golaszewski <bgolaszewski@baylibre.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) MODULE_ALIAS("platform:max77650-charger");