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) // Copyright (C) 2018 Spreadtrum Communications Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <linux/power_supply.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/usb/phy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) /* PMIC global registers definition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #define SC2731_CHARGE_STATUS		0xedc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #define SC2731_CHARGE_FULL		BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #define SC2731_MODULE_EN1		0xc0c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #define SC2731_CHARGE_EN		BIT(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) /* SC2731 switch charger registers definition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define SC2731_CHG_CFG0			0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define SC2731_CHG_CFG1			0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define SC2731_CHG_CFG2			0x8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define SC2731_CHG_CFG3			0xc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define SC2731_CHG_CFG4			0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define SC2731_CHG_CFG5			0x28
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) /* SC2731_CHG_CFG0 register definition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define SC2731_PRECHG_RNG_SHIFT		11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define SC2731_PRECHG_RNG_MASK		GENMASK(12, 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define SC2731_TERMINATION_VOL_MASK	GENMASK(2, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define SC2731_TERMINATION_VOL_SHIFT	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define SC2731_TERMINATION_VOL_CAL_MASK	GENMASK(8, 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define SC2731_TERMINATION_VOL_CAL_SHIFT	3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define SC2731_TERMINATION_CUR_MASK	GENMASK(2, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define SC2731_CC_EN			BIT(13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define SC2731_CHARGER_PD		BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) /* SC2731_CHG_CFG1 register definition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define SC2731_CUR_MASK			GENMASK(5, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) /* SC2731_CHG_CFG5 register definition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define SC2731_CUR_LIMIT_SHIFT		8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define SC2731_CUR_LIMIT_MASK		GENMASK(9, 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) /* Default current definition (unit is mA) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define SC2731_CURRENT_LIMIT_100	100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #define SC2731_CURRENT_LIMIT_500	500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #define SC2731_CURRENT_LIMIT_900	900
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #define SC2731_CURRENT_LIMIT_2000	2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #define SC2731_CURRENT_PRECHG		450
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define SC2731_CURRENT_STEP		50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) struct sc2731_charger_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct usb_phy *usb_phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	struct notifier_block usb_notify;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct power_supply *psy_usb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	struct work_struct work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	bool charging;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	u32 base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	u32 limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static void sc2731_charger_stop_charge(struct sc2731_charger_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			   SC2731_CC_EN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			   SC2731_CHARGER_PD, SC2731_CHARGER_PD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) static int sc2731_charger_start_charge(struct sc2731_charger_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	/* Enable charger constant current mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 				 SC2731_CC_EN, SC2731_CC_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	/* Start charging */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	return regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 				  SC2731_CHARGER_PD, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) static int sc2731_charger_set_current_limit(struct sc2731_charger_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 					    u32 limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	if (limit <= SC2731_CURRENT_LIMIT_100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	else if (limit <= SC2731_CURRENT_LIMIT_500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		val = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	else if (limit <= SC2731_CURRENT_LIMIT_900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		val = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		val = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	return regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 				  SC2731_CUR_LIMIT_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 				  val << SC2731_CUR_LIMIT_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static int sc2731_charger_set_current(struct sc2731_charger_info *info, u32 cur)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	if (cur > SC2731_CURRENT_LIMIT_2000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		cur = SC2731_CURRENT_LIMIT_2000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	else if (cur < SC2731_CURRENT_PRECHG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		cur = SC2731_CURRENT_PRECHG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	/* Calculate the step value, each step is 50 mA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	val = (cur - SC2731_CURRENT_PRECHG) / SC2731_CURRENT_STEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	/* Set pre-charge current as 450 mA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 				 SC2731_PRECHG_RNG_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 				 0x3 << SC2731_PRECHG_RNG_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	return regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 				  SC2731_CUR_MASK, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static int sc2731_charger_get_status(struct sc2731_charger_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	ret = regmap_read(info->regmap, SC2731_CHARGE_STATUS, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	if (val & SC2731_CHARGE_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		return POWER_SUPPLY_STATUS_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	return POWER_SUPPLY_STATUS_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static int sc2731_charger_get_current(struct sc2731_charger_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 				      u32 *cur)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	ret = regmap_read(info->regmap, info->base + SC2731_CHG_CFG1, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	val &= SC2731_CUR_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	*cur = val * SC2731_CURRENT_STEP + SC2731_CURRENT_PRECHG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int sc2731_charger_get_current_limit(struct sc2731_charger_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 					    u32 *cur)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	ret = regmap_read(info->regmap, info->base + SC2731_CHG_CFG5, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	val = (val & SC2731_CUR_LIMIT_MASK) >> SC2731_CUR_LIMIT_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	switch (val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		*cur = SC2731_CURRENT_LIMIT_100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		*cur = SC2731_CURRENT_LIMIT_2000;
^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) 	case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		*cur = SC2731_CURRENT_LIMIT_900;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		*cur = SC2731_CURRENT_LIMIT_500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) sc2731_charger_usb_set_property(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 				enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 				const union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	struct sc2731_charger_info *info = power_supply_get_drvdata(psy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	mutex_lock(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	if (!info->charging) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		mutex_unlock(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		ret = sc2731_charger_set_current(info, val->intval / 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			dev_err(info->dev, "set charge current failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		ret = sc2731_charger_set_current_limit(info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 						       val->intval / 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 			dev_err(info->dev, "set input current limit failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	mutex_unlock(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static int sc2731_charger_usb_get_property(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 					   enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 					   union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	struct sc2731_charger_info *info = power_supply_get_drvdata(psy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	u32 cur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	mutex_lock(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	case POWER_SUPPLY_PROP_STATUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		if (info->charging)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 			val->intval = sc2731_charger_get_status(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		if (!info->charging) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			val->intval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 			ret = sc2731_charger_get_current(info, &cur);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 			if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 				goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 			val->intval = cur * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		if (!info->charging) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 			val->intval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 			ret = sc2731_charger_get_current_limit(info, &cur);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 			if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 				goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 			val->intval = cur * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	mutex_unlock(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static int sc2731_charger_property_is_writeable(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 						enum power_supply_property psp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static enum power_supply_property sc2731_usb_props[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	POWER_SUPPLY_PROP_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
^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) static const struct power_supply_desc sc2731_charger_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	.name			= "sc2731_charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	.type			= POWER_SUPPLY_TYPE_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	.properties		= sc2731_usb_props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	.num_properties		= ARRAY_SIZE(sc2731_usb_props),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	.get_property		= sc2731_charger_usb_get_property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	.set_property		= sc2731_charger_usb_set_property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	.property_is_writeable	= sc2731_charger_property_is_writeable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) static void sc2731_charger_work(struct work_struct *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	struct sc2731_charger_info *info =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		container_of(data, struct sc2731_charger_info, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	mutex_lock(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	if (info->limit > 0 && !info->charging) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 		/* set current limitation and start to charge */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		ret = sc2731_charger_set_current_limit(info, info->limit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 		ret = sc2731_charger_set_current(info, info->limit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		ret = sc2731_charger_start_charge(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		info->charging = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	} else if (!info->limit && info->charging) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		/* Stop charging */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		info->charging = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		sc2731_charger_stop_charge(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	mutex_unlock(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static int sc2731_charger_usb_change(struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 				     unsigned long limit, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	struct sc2731_charger_info *info =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		container_of(nb, struct sc2731_charger_info, usb_notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	info->limit = limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	schedule_work(&info->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	return NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static int sc2731_charger_hw_init(struct sc2731_charger_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	struct power_supply_battery_info bat_info = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	u32 term_currrent, term_voltage, cur_val, vol_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	/* Enable charger module */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	ret = regmap_update_bits(info->regmap, SC2731_MODULE_EN1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 				 SC2731_CHARGE_EN, SC2731_CHARGE_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	ret = power_supply_get_battery_info(info->psy_usb, &bat_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 		dev_warn(info->dev, "no battery information is supplied\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 		 * If no battery information is supplied, we should set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		 * default charge termination current to 120 mA, and default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 		 * charge termination voltage to 4.35V.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 		cur_val = 0x2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 		vol_val = 0x1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 		term_currrent = bat_info.charge_term_current_ua / 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 		if (term_currrent <= 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 			cur_val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 		else if (term_currrent >= 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 			cur_val = 0x7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 			cur_val = ((term_currrent - 90) / 25) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		term_voltage = bat_info.constant_charge_voltage_max_uv / 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 		if (term_voltage > 4500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 			term_voltage = 4500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		if (term_voltage > 4200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 			vol_val = (term_voltage - 4200) / 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 			vol_val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 		power_supply_put_battery_info(info->psy_usb, &bat_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 	/* Set charge termination current */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 				 SC2731_TERMINATION_CUR_MASK, cur_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 	/* Set charge termination voltage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 				 SC2731_TERMINATION_VOL_MASK |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 				 SC2731_TERMINATION_VOL_CAL_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 				 (vol_val << SC2731_TERMINATION_VOL_SHIFT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 				 (0x6 << SC2731_TERMINATION_VOL_CAL_SHIFT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	regmap_update_bits(info->regmap, SC2731_MODULE_EN1, SC2731_CHARGE_EN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static void sc2731_charger_detect_status(struct sc2731_charger_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 	unsigned int min, max;
^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) 	 * If the USB charger status has been USB_CHARGER_PRESENT before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	 * registering the notifier, we should start to charge with getting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 	 * the charge current.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 	if (info->usb_phy->chg_state != USB_CHARGER_PRESENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) 	usb_phy_get_charger_current(info->usb_phy, &min, &max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 	info->limit = min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 	schedule_work(&info->work);
^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) static int sc2731_charger_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 	struct device_node *np = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	struct sc2731_charger_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 	struct power_supply_config charger_cfg = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 	if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 	mutex_init(&info->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 	info->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	INIT_WORK(&info->work, sc2731_charger_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 	info->regmap = dev_get_regmap(pdev->dev.parent, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 	if (!info->regmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 		dev_err(&pdev->dev, "failed to get charger regmap\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 	ret = of_property_read_u32(np, "reg", &info->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 		dev_err(&pdev->dev, "failed to get register address\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 	charger_cfg.drv_data = info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 	charger_cfg.of_node = np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 	info->psy_usb = devm_power_supply_register(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 						   &sc2731_charger_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 						   &charger_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) 	if (IS_ERR(info->psy_usb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 		dev_err(&pdev->dev, "failed to register power supply\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 		return PTR_ERR(info->psy_usb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) 	ret = sc2731_charger_hw_init(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) 	info->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "phys", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 	if (IS_ERR(info->usb_phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) 		dev_err(&pdev->dev, "failed to find USB phy\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 		return PTR_ERR(info->usb_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 	info->usb_notify.notifier_call = sc2731_charger_usb_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) 	ret = usb_register_notifier(info->usb_phy, &info->usb_notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) 		dev_err(&pdev->dev, "failed to register notifier: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) 	sc2731_charger_detect_status(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) static int sc2731_charger_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) 	struct sc2731_charger_info *info = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) 	usb_unregister_notifier(info->usb_phy, &info->usb_notify);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) static const struct of_device_id sc2731_charger_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) 	{ .compatible = "sprd,sc2731-charger", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) MODULE_DEVICE_TABLE(of, sc2731_charger_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) static struct platform_driver sc2731_charger_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) 		.name = "sc2731-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) 		.of_match_table = sc2731_charger_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) 	.probe = sc2731_charger_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) 	.remove = sc2731_charger_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) module_platform_driver(sc2731_charger_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) MODULE_DESCRIPTION("Spreadtrum SC2731 Charger Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) MODULE_LICENSE("GPL v2");