// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2019 MediaTek Inc. * Author Andrew-sh.Cheng */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_RT_REGMAP #include #endif #include "mtk_charger_intf.h" #include "rt9466.h" #define I2C_ACCESS_MAX_RETRY 5 #define RT9466_DRV_VERSION "1.0.13_MTK" #define RTLOG_LEVEL 0 #define rt_info(fmt, args...) \ do {\ if (RTLOG_LEVEL >= LOGLEVEL_INFO) {\ pr_info(fmt, ##args); \ } \ } while (0) #define rt_debug(fmt, args...) \ do {\ if (RTLOG_LEVEL >= LOGLEVEL_DEBUG) {\ pr_debug(fmt, ##args); \ } \ } while (0) #define NEED_USE 0 /* ======================= */ /* RT9466 Parameter */ /* ======================= */ static const u32 rt9466_boost_oc_threshold[] = { 500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000, 3000000, }; /* uA */ static const u32 rt9466_safety_timer[] = { 4, 6, 8, 10, 12, 14, 16, 20, }; /* hour */ enum rt9466_irq_idx { RT9466_IRQIDX_CHG_STATC = 0, RT9466_IRQIDX_CHG_FAULT, RT9466_IRQIDX_TS_STATC, RT9466_IRQIDX_CHG_IRQ1, RT9466_IRQIDX_CHG_IRQ2, RT9466_IRQIDX_CHG_IRQ3, RT9466_IRQIDX_MAX, }; enum rt9466_irq_stat { RT9466_IRQSTAT_CHG_STATC = 0, RT9466_IRQSTAT_CHG_FAULT, RT9466_IRQSTAT_TS_STATC, RT9466_IRQSTAT_MAX, }; static const u8 rt9466_irq_maskall[RT9466_IRQIDX_MAX] = { 0xF0, 0xF0, 0xFF, 0xFF, 0xFF, 0xFF }; struct irq_mapping_tbl { const char *name; const int id; }; #define RT9466_IRQ_MAPPING(_name, _id) {.name = #_name, .id = _id} static const struct irq_mapping_tbl rt9466_irq_mapping_tbl[] = { RT9466_IRQ_MAPPING(chg_treg, 4), RT9466_IRQ_MAPPING(chg_aicr, 5), RT9466_IRQ_MAPPING(chg_mivr, 6), RT9466_IRQ_MAPPING(pwr_rdy, 7), RT9466_IRQ_MAPPING(chg_vsysuv, 12), RT9466_IRQ_MAPPING(chg_vsysov, 13), RT9466_IRQ_MAPPING(chg_vbatov, 14), RT9466_IRQ_MAPPING(chg_vbusov, 15), RT9466_IRQ_MAPPING(ts_batcold, 20), RT9466_IRQ_MAPPING(ts_batcool, 21), RT9466_IRQ_MAPPING(ts_batwarm, 22), RT9466_IRQ_MAPPING(ts_bathot, 23), RT9466_IRQ_MAPPING(ts_statci, 24), RT9466_IRQ_MAPPING(chg_faulti, 25), RT9466_IRQ_MAPPING(chg_statci, 26), RT9466_IRQ_MAPPING(chg_tmri, 27), RT9466_IRQ_MAPPING(chg_batabsi, 28), RT9466_IRQ_MAPPING(chg_adpbadi, 29), RT9466_IRQ_MAPPING(chg_rvpi, 30), RT9466_IRQ_MAPPING(otpi, 31), RT9466_IRQ_MAPPING(chg_aiclmeasi, 32), RT9466_IRQ_MAPPING(chg_ichgmeasi, 33), RT9466_IRQ_MAPPING(wdtmri, 35), RT9466_IRQ_MAPPING(ssfinishi, 36), RT9466_IRQ_MAPPING(chg_rechgi, 37), RT9466_IRQ_MAPPING(chg_termi, 38), RT9466_IRQ_MAPPING(chg_ieoci, 39), RT9466_IRQ_MAPPING(adc_donei, 40), RT9466_IRQ_MAPPING(pumpx_donei, 41), RT9466_IRQ_MAPPING(bst_batuvi, 45), RT9466_IRQ_MAPPING(bst_midovi, 46), RT9466_IRQ_MAPPING(bst_olpi, 47), }; enum rt9466_charging_status { RT9466_CHG_STATUS_READY = 0, RT9466_CHG_STATUS_PROGRESS, RT9466_CHG_STATUS_DONE, RT9466_CHG_STATUS_FAULT, RT9466_CHG_STATUS_MAX, }; static const char *rt9466_chg_status_name[RT9466_CHG_STATUS_MAX] = { "ready", "progress", "done", "fault", }; static const u8 rt9466_val_en_hidden_mode[] = { 0x49, 0x32, 0xB6, 0x27, 0x48, 0x18, 0x03, 0xE2, }; enum rt9466_iin_limit_sel { RT9466_IIMLMTSEL_PSEL_OTG, RT9466_IINLMTSEL_AICR = 2, RT9466_IINLMTSEL_LOWER_LEVEL, /* lower of above two */ }; enum rt9466_adc_sel { RT9466_ADC_VBUS_DIV5 = 1, RT9466_ADC_VBUS_DIV2, RT9466_ADC_VSYS, RT9466_ADC_VBAT, RT9466_ADC_TS_BAT = 6, RT9466_ADC_IBUS = 8, RT9466_ADC_IBAT, RT9466_ADC_REGN = 11, RT9466_ADC_TEMP_JC, RT9466_ADC_MAX, }; /* * Unit for each ADC parameter * 0 stands for reserved * For TS_BAT, the real unit is 0.25. * Here we use 25, please remember to divide 100 while showing the value */ static const int rt9466_adc_unit[RT9466_ADC_MAX] = { 0, RT9466_ADC_UNIT_VBUS_DIV5, RT9466_ADC_UNIT_VBUS_DIV2, RT9466_ADC_UNIT_VSYS, RT9466_ADC_UNIT_VBAT, 0, RT9466_ADC_UNIT_TS_BAT, 0, RT9466_ADC_UNIT_IBUS, RT9466_ADC_UNIT_IBAT, 0, RT9466_ADC_UNIT_REGN, RT9466_ADC_UNIT_TEMP_JC, }; static const int rt9466_adc_offset[RT9466_ADC_MAX] = { 0, RT9466_ADC_OFFSET_VBUS_DIV5, RT9466_ADC_OFFSET_VBUS_DIV2, RT9466_ADC_OFFSET_VSYS, RT9466_ADC_OFFSET_VBAT, 0, RT9466_ADC_OFFSET_TS_BAT, 0, RT9466_ADC_OFFSET_IBUS, RT9466_ADC_OFFSET_IBAT, 0, RT9466_ADC_OFFSET_REGN, RT9466_ADC_OFFSET_TEMP_JC, }; struct rt9466_desc { u32 ichg; /* uA */ u32 ichg_dis_chg;/* uA */ u32 aicr; /* uA */ u32 mivr; /* uV */ u32 cv; /* uV */ u32 ieoc; /* uA */ u32 safety_timer; /* hour */ u32 ircmp_resistor; /* uohm */ u32 ircmp_vclamp; /* uV */ bool en_te; bool en_wdt; bool en_irq_pulse; bool en_jeita; int regmap_represent_slave_addr; const char *regmap_name; const char *chg_dev_name; bool ceb_invert; }; /* These default values will be applied if there's no property in dts */ static struct rt9466_desc rt9466_default_desc = { .ichg = 2000000, /* uA */ .ichg_dis_chg = 2000000,/* uA */ .aicr = 500000, /* uA */ .mivr = 4400000, /* uV */ .cv = 4350000, /* uA */ .ieoc = 250000, /* uA */ .safety_timer = 12, #ifdef CONFIG_MTK_BIF_SUPPORT .ircmp_resistor = 0, /* uohm */ .ircmp_vclamp = 0, /* uV */ #else .ircmp_resistor = 25000, /* uohm */ .ircmp_vclamp = 32000, /* uV */ #endif /* CONFIG_MTK_BIF_SUPPORT */ .en_te = true, .en_wdt = true, .en_irq_pulse = false, .en_jeita = false, .regmap_represent_slave_addr = RT9466_SLAVE_ADDR, .regmap_name = "rt9466", .chg_dev_name = "primary_chg", .ceb_invert = false, }; struct rt9466_info { struct i2c_client *client; struct mutex i2c_access_lock; struct mutex adc_access_lock; struct mutex irq_access_lock; struct mutex aicr_access_lock; struct mutex ichg_access_lock; struct mutex pe_access_lock; struct mutex hidden_mode_lock; struct mutex ieoc_lock; struct mutex tchg_lock; struct device *dev; struct charger_device *chg_dev; struct charger_properties chg_props; struct rt9466_desc *desc; wait_queue_head_t wait_queue; int irq; int aicr_limit; u32 intr_gpio; u32 ceb_gpio; u8 chip_rev; u8 irq_flag[RT9466_IRQIDX_MAX]; u8 irq_stat[RT9466_IRQSTAT_MAX]; u8 irq_mask[RT9466_IRQIDX_MAX]; u32 hidden_mode_cnt; u32 ieoc; u32 ichg; u32 ichg_dis_chg; int tchg; bool ieoc_wkard; struct work_struct init_work; #ifdef CONFIG_RT_REGMAP struct rt_regmap_device *regmap_dev; struct rt_regmap_properties *regmap_prop; #endif /* CONFIG_RT_REGMAP */ }; /* ======================= */ /* Register Address */ /* ======================= */ static const unsigned char rt9466_reg_addr[] = { RT9466_REG_CORE_CTRL0, RT9466_REG_CHG_CTRL1, RT9466_REG_CHG_CTRL2, RT9466_REG_CHG_CTRL3, RT9466_REG_CHG_CTRL4, RT9466_REG_CHG_CTRL5, RT9466_REG_CHG_CTRL6, RT9466_REG_CHG_CTRL7, RT9466_REG_CHG_CTRL8, RT9466_REG_CHG_CTRL9, RT9466_REG_CHG_CTRL10, RT9466_REG_CHG_CTRL11, RT9466_REG_CHG_CTRL12, RT9466_REG_CHG_CTRL13, RT9466_REG_CHG_CTRL14, RT9466_REG_CHG_CTRL15, RT9466_REG_CHG_CTRL16, RT9466_REG_CHG_ADC, RT9466_REG_CHG_CTRL19, RT9466_REG_CHG_CTRL17, RT9466_REG_CHG_CTRL18, RT9466_REG_DEVICE_ID, RT9466_REG_CHG_STAT, RT9466_REG_CHG_NTC, RT9466_REG_ADC_DATA_H, RT9466_REG_ADC_DATA_L, RT9466_REG_CHG_STATC, RT9466_REG_CHG_FAULT, RT9466_REG_TS_STATC, /* Skip IRQ evt to prevent reading clear while dumping registers */ RT9466_REG_CHG_STATC_CTRL, RT9466_REG_CHG_FAULT_CTRL, RT9466_REG_TS_STATC_CTRL, RT9466_REG_CHG_IRQ1_CTRL, RT9466_REG_CHG_IRQ2_CTRL, RT9466_REG_CHG_IRQ3_CTRL, }; /* ========= */ /* RT Regmap */ /* ========= */ #ifdef CONFIG_RT_REGMAP RT_REG_DECL(RT9466_REG_CORE_CTRL0, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL1, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL2, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL3, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL4, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL5, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL6, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL7, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL8, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL9, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL10, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL11, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL12, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL13, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL14, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL15, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL16, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_ADC, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL19, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL17, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_CTRL18, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL1, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL2, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL4, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL6, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL7, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL8, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL9, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_HIDDEN_CTRL15, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_DEVICE_ID, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_STAT, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_NTC, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_ADC_DATA_H, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_ADC_DATA_L, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_STATC, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_FAULT, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_TS_STATC, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_IRQ1, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_IRQ2, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_IRQ3, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_STATC_CTRL, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_FAULT_CTRL, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_TS_STATC_CTRL, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_IRQ1_CTRL, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_IRQ2_CTRL, 1, RT_VOLATILE, {}); RT_REG_DECL(RT9466_REG_CHG_IRQ3_CTRL, 1, RT_VOLATILE, {}); static const rt_register_map_t rt9466_regmap_map[] = { RT_REG(RT9466_REG_CORE_CTRL0), RT_REG(RT9466_REG_CHG_CTRL1), RT_REG(RT9466_REG_CHG_CTRL2), RT_REG(RT9466_REG_CHG_CTRL3), RT_REG(RT9466_REG_CHG_CTRL4), RT_REG(RT9466_REG_CHG_CTRL5), RT_REG(RT9466_REG_CHG_CTRL6), RT_REG(RT9466_REG_CHG_CTRL7), RT_REG(RT9466_REG_CHG_CTRL8), RT_REG(RT9466_REG_CHG_CTRL9), RT_REG(RT9466_REG_CHG_CTRL10), RT_REG(RT9466_REG_CHG_CTRL11), RT_REG(RT9466_REG_CHG_CTRL12), RT_REG(RT9466_REG_CHG_CTRL13), RT_REG(RT9466_REG_CHG_CTRL14), RT_REG(RT9466_REG_CHG_CTRL15), RT_REG(RT9466_REG_CHG_CTRL16), RT_REG(RT9466_REG_CHG_ADC), RT_REG(RT9466_REG_CHG_CTRL19), RT_REG(RT9466_REG_CHG_CTRL17), RT_REG(RT9466_REG_CHG_CTRL18), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL1), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL2), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL4), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL6), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL7), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL8), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL9), RT_REG(RT9466_REG_CHG_HIDDEN_CTRL15), RT_REG(RT9466_REG_DEVICE_ID), RT_REG(RT9466_REG_CHG_STAT), RT_REG(RT9466_REG_CHG_NTC), RT_REG(RT9466_REG_ADC_DATA_H), RT_REG(RT9466_REG_ADC_DATA_L), RT_REG(RT9466_REG_CHG_STATC), RT_REG(RT9466_REG_CHG_FAULT), RT_REG(RT9466_REG_TS_STATC), RT_REG(RT9466_REG_CHG_IRQ1), RT_REG(RT9466_REG_CHG_IRQ2), RT_REG(RT9466_REG_CHG_IRQ3), RT_REG(RT9466_REG_CHG_STATC_CTRL), RT_REG(RT9466_REG_CHG_FAULT_CTRL), RT_REG(RT9466_REG_TS_STATC_CTRL), RT_REG(RT9466_REG_CHG_IRQ1_CTRL), RT_REG(RT9466_REG_CHG_IRQ2_CTRL), RT_REG(RT9466_REG_CHG_IRQ3_CTRL), }; #endif /* CONFIG_RT_REGMAP */ /* ========================= */ /* I2C operations */ /* ========================= */ static int rt9466_device_read(void *client, u32 addr, int leng, void *dst) { struct i2c_client *i2c = (struct i2c_client *)client; return i2c_smbus_read_i2c_block_data(i2c, addr, leng, dst); } static int rt9466_device_write(void *client, u32 addr, int leng, const void *src) { struct i2c_client *i2c = (struct i2c_client *)client; return i2c_smbus_write_i2c_block_data(i2c, addr, leng, src); } #ifdef CONFIG_RT_REGMAP static struct rt_regmap_fops rt9466_regmap_fops = { .read_device = rt9466_device_read, .write_device = rt9466_device_write, }; static int rt9466_register_rt_regmap(struct rt9466_info *info) { int ret = 0; struct i2c_client *client = info->client; struct rt_regmap_properties *prop = NULL; dev_info(info->dev, "%s\n", __func__); prop = devm_kzalloc(&client->dev, sizeof(struct rt_regmap_properties), GFP_KERNEL); if (!prop) return -ENOMEM; prop->name = info->desc->regmap_name; prop->aliases = info->desc->regmap_name; prop->register_num = ARRAY_SIZE(rt9466_regmap_map); prop->rm = rt9466_regmap_map; prop->rt_regmap_mode = RT_SINGLE_BYTE | RT_CACHE_DISABLE | RT_IO_PASS_THROUGH; prop->io_log_en = 0; info->regmap_prop = prop; info->regmap_dev = rt_regmap_device_register_ex(info->regmap_prop, &rt9466_regmap_fops, &client->dev, client, info->desc->regmap_represent_slave_addr, info); if (!info->regmap_dev) { rt_debug("%s: register regmap dev fail\n", __func__); return -EIO; } return ret; } #endif /* CONFIG_RT_REGMAP */ static inline int __rt9466_i2c_write_byte(struct rt9466_info *info, u8 cmd, u8 data) { int ret = 0, retry = 0; do { #ifdef CONFIG_RT_REGMAP ret = rt_regmap_block_write(info->regmap_dev, cmd, 1, &data); #else ret = rt9466_device_write(info->client, cmd, 1, &data); #endif retry++; if (ret < 0) udelay(10); } while (ret < 0 && retry < I2C_ACCESS_MAX_RETRY); if (ret < 0) rt_debug("%s: I2CW[0x%02X] = 0x%02X fail\n", __func__, cmd, data); #if NEED_USE else rt_debug("%s: I2CW[0x%02X] = 0x%02X\n", __func__, cmd, data); #endif return ret; } static int rt9466_i2c_write_byte(struct rt9466_info *info, u8 cmd, u8 data) { int ret = 0; mutex_lock(&info->i2c_access_lock); ret = __rt9466_i2c_write_byte(info, cmd, data); mutex_unlock(&info->i2c_access_lock); return ret; } static inline int __rt9466_i2c_read_byte(struct rt9466_info *info, u8 cmd) { int ret = 0, ret_val = 0, retry = 0; do { #ifdef CONFIG_RT_REGMAP ret = rt_regmap_block_read(info->regmap_dev, cmd, 1, &ret_val); #else ret = rt9466_device_read(info->client, cmd, 1, &ret_val); #endif retry++; if (ret < 0) udelay(10); } while (ret < 0 && retry < I2C_ACCESS_MAX_RETRY); if (ret < 0) { rt_debug("%s: I2CR[0x%02X] fail\n", __func__, cmd); return ret; } ret_val = ret_val & 0xFF; #if NEED_USE rt_debug("%s: I2CR[0x%02X] = 0x%02X\n", __func__, cmd, ret_val); #endif return ret_val; } static int rt9466_i2c_read_byte(struct rt9466_info *info, u8 cmd) { int ret = 0; mutex_lock(&info->i2c_access_lock); ret = __rt9466_i2c_read_byte(info, cmd); mutex_unlock(&info->i2c_access_lock); if (ret < 0) return ret; return (ret & 0xFF); } static inline int __rt9466_i2c_block_write(struct rt9466_info *info, u8 cmd, u32 leng, const u8 *data) { int ret = 0; #ifdef CONFIG_RT_REGMAP ret = rt_regmap_block_write(info->regmap_dev, cmd, leng, data); #else ret = rt9466_device_write(info->client, cmd, leng, data); #endif return ret; } static int rt9466_i2c_block_write(struct rt9466_info *info, u8 cmd, u32 leng, const u8 *data) { int ret = 0; mutex_lock(&info->i2c_access_lock); ret = __rt9466_i2c_block_write(info, cmd, leng, data); mutex_unlock(&info->i2c_access_lock); return ret; } static inline int __rt9466_i2c_block_read(struct rt9466_info *info, u8 cmd, u32 leng, u8 *data) { int ret = 0; #ifdef CONFIG_RT_REGMAP ret = rt_regmap_block_read(info->regmap_dev, cmd, leng, data); #else ret = rt9466_device_read(info->client, cmd, leng, data); #endif return ret; } static int rt9466_i2c_block_read(struct rt9466_info *info, u8 cmd, u32 leng, u8 *data) { int ret = 0; mutex_lock(&info->i2c_access_lock); ret = __rt9466_i2c_block_read(info, cmd, leng, data); mutex_unlock(&info->i2c_access_lock); return ret; } static int rt9466_i2c_test_bit(struct rt9466_info *info, u8 cmd, u8 shift, bool *is_one) { int ret = 0; u8 data = 0; ret = rt9466_i2c_read_byte(info, cmd); if (ret < 0) { *is_one = false; return ret; } data = ret & (1 << shift); *is_one = (data == 0 ? false : true); return ret; } static int rt9466_i2c_update_bits(struct rt9466_info *info, u8 cmd, u8 data, u8 mask) { int ret = 0; u8 reg_data = 0; mutex_lock(&info->i2c_access_lock); ret = __rt9466_i2c_read_byte(info, cmd); if (ret < 0) { mutex_unlock(&info->i2c_access_lock); return ret; } reg_data = ret & 0xFF; reg_data &= ~mask; reg_data |= (data & mask); ret = __rt9466_i2c_write_byte(info, cmd, reg_data); mutex_unlock(&info->i2c_access_lock); return ret; } static inline int rt9466_set_bit(struct rt9466_info *info, u8 reg, u8 mask) { return rt9466_i2c_update_bits(info, reg, mask, mask); } static inline int rt9466_clr_bit(struct rt9466_info *info, u8 reg, u8 mask) { return rt9466_i2c_update_bits(info, reg, 0x00, mask); } /* ================== */ /* Internal Functions */ /* ================== */ static int rt9466_get_mivr(struct rt9466_info *info, u32 *mivr); static int rt9466_get_aicr(struct charger_device *chg_dev, u32 *aicr); static int rt9466_get_ichg(struct charger_device *chg_dev, u32 *ichg); static int rt9466_set_aicr(struct charger_device *chg_dev, u32 aicr); static int rt9466_set_ichg(struct charger_device *chg_dev, u32 aicr); static int rt9466_kick_wdt(struct charger_device *chg_dev); static int rt9466_enable_charging(struct charger_device *chg_dev, bool en); static int rt9466_get_ieoc(struct rt9466_info *info, u32 *ieoc); static inline void rt9466_irq_set_flag(struct rt9466_info *info, u8 *irq, u8 mask) { mutex_lock(&info->irq_access_lock); *irq |= mask; mutex_unlock(&info->irq_access_lock); } static inline void rt9466_irq_clr_flag(struct rt9466_info *info, u8 *irq, u8 mask) { mutex_lock(&info->irq_access_lock); *irq &= ~mask; mutex_unlock(&info->irq_access_lock); } static inline const char *rt9466_get_irq_name(struct rt9466_info *info, int irqnum) { int i = 0; for (i = 0; i < ARRAY_SIZE(rt9466_irq_mapping_tbl); i++) { if (rt9466_irq_mapping_tbl[i].id == irqnum) return rt9466_irq_mapping_tbl[i].name; } return "not found"; } static inline void rt9466_irq_mask(struct rt9466_info *info, int irqnum) { rt_debug("%s: irq = %d, %s\n", __func__, irqnum, rt9466_get_irq_name(info, irqnum)); info->irq_mask[irqnum / 8] |= (1 << (irqnum % 8)); } static inline void rt9466_irq_unmask(struct rt9466_info *info, int irqnum) { rt_debug("%s: irq = %d, %s\n", __func__, irqnum, rt9466_get_irq_name(info, irqnum)); info->irq_mask[irqnum / 8] &= ~(1 << (irqnum % 8)); } static inline u8 rt9466_closest_reg(u32 min, u32 max, u32 step, u32 target) { /* Smaller than minimum supported value, use minimum one */ if (target < min) return 0; /* Greater than maximum supported value, use maximum one */ if (target >= max) return (max - min) / step; return (target - min) / step; } static inline u8 rt9466_closest_reg_via_tbl(const u32 *tbl, u32 tbl_size, u32 target) { u32 i = 0; /* Smaller than minimum supported value, use minimum one */ if (target < tbl[0]) return 0; for (i = 0; i < tbl_size - 1; i++) { if (target >= tbl[i] && target < tbl[i + 1]) return i; } /* Greater than maximum supported value, use maximum one */ return tbl_size - 1; } static inline u32 rt9466_closest_value(u32 min, u32 max, u32 step, u8 reg_val) { u32 ret_val = 0; ret_val = min + reg_val * step; if (ret_val > max) ret_val = max; return ret_val; } static int rt9466_get_adc(struct rt9466_info *info, enum rt9466_adc_sel adc_sel, int *adc_val) { int ret = 0, i = 0; const int max_wait_times = 6; u8 adc_data[2] = {0, 0}; u32 aicr = 0, ichg = 0; bool adc_start = false; mutex_lock(&info->adc_access_lock); /* Select ADC to desired channel */ ret = rt9466_i2c_update_bits(info, RT9466_REG_CHG_ADC, adc_sel << RT9466_SHIFT_ADC_IN_SEL, RT9466_MASK_ADC_IN_SEL); if (ret < 0) { rt_debug("%s: select ch to %d fail(%d)\n", __func__, adc_sel, ret); goto out; } /* Workaround for IBUS & IBAT */ if (adc_sel == RT9466_ADC_IBUS) { mutex_lock(&info->aicr_access_lock); ret = rt9466_get_aicr(info->chg_dev, &aicr); if (ret < 0) { rt_debug("%s: get aicr fail\n", __func__); goto out_unlock_all; } } else if (adc_sel == RT9466_ADC_IBAT) { mutex_lock(&info->ichg_access_lock); ret = rt9466_get_ichg(info->chg_dev, &ichg); if (ret < 0) { rt_debug("%s: get ichg fail\n", __func__); goto out_unlock_all; } } /* Start ADC conversation */ ret = rt9466_set_bit(info, RT9466_REG_CHG_ADC, RT9466_MASK_ADC_START); if (ret < 0) { rt_debug("%s: start con fail(%d), sel = %d\n", __func__, ret, adc_sel); goto out_unlock_all; } for (i = 0; i < max_wait_times; i++) { msleep(35); ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_ADC, RT9466_SHIFT_ADC_START, &adc_start); if (ret >= 0 && !adc_start) break; } if (i == max_wait_times) { rt_debug("%s: wait con fail(%d), sel = %d\n", __func__, ret, adc_sel); ret = -EINVAL; goto out_unlock_all; } mdelay(1); /* Read ADC data high/low byte */ ret = rt9466_i2c_block_read(info, RT9466_REG_ADC_DATA_H, 2, adc_data); if (ret < 0) { rt_debug("%s: read ADC data fail\n", __func__); goto out_unlock_all; } /* Calculate ADC value */ *adc_val = ((adc_data[0] << 8) + adc_data[1]) * rt9466_adc_unit[adc_sel] + rt9466_adc_offset[adc_sel]; rt_debug("%s: adc_sel = %d, adc_h = 0x%02X, adc_l = 0x%02X, val = %d\n", __func__, adc_sel, adc_data[0], adc_data[1], *adc_val); ret = 0; out_unlock_all: /* Coefficient of IBUS & IBAT */ if (adc_sel == RT9466_ADC_IBUS) { if (aicr < 400000) /* 400mA */ *adc_val = *adc_val * 67 / 100; mutex_unlock(&info->aicr_access_lock); } else if (adc_sel == RT9466_ADC_IBAT) { if (ichg >= 100000 && ichg <= 450000) /* 100~450mA */ *adc_val = *adc_val * 57 / 100; else if (ichg >= 500000 && ichg <= 850000) /* 500~850mA */ *adc_val = *adc_val * 63 / 100; mutex_unlock(&info->ichg_access_lock); } out: mutex_unlock(&info->adc_access_lock); return ret; } static inline int rt9466_enable_ilim(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL3, RT9466_MASK_ILIM_EN); } static int rt9466_set_aicl_vth(struct rt9466_info *info, u32 aicl_vth) { u8 reg_aicl_vth = 0; reg_aicl_vth = rt9466_closest_reg(RT9466_AICL_VTH_MIN, RT9466_AICL_VTH_MAX, RT9466_AICL_VTH_STEP, aicl_vth); rt_info("%s: vth = %d(0x%02X)\n", __func__, aicl_vth, reg_aicl_vth); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL14, reg_aicl_vth << RT9466_SHIFT_AICL_VTH, RT9466_MASK_AICL_VTH); } static int __rt9466_set_aicr(struct rt9466_info *info, u32 aicr) { u8 reg_aicr = 0; reg_aicr = rt9466_closest_reg(RT9466_AICR_MIN, RT9466_AICR_MAX, RT9466_AICR_STEP, aicr); rt_info("%s: aicr = %d(0x%02X)\n", __func__, aicr, reg_aicr); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL3, reg_aicr << RT9466_SHIFT_AICR, RT9466_MASK_AICR); } static int __rt9466_run_aicl(struct rt9466_info *info) { int ret = 0; u32 mivr = 0, aicl_vth = 0, aicr = 0; bool mivr_act = false; /* Check whether MIVR loop is active */ ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_STATC, RT9466_SHIFT_CHG_MIVR, &mivr_act); if (ret < 0) { rt_debug("%s: read mivr stat fail\n", __func__); goto out; } if (!mivr_act) { rt_info("%s: mivr loop is not active\n", __func__); goto out; } ret = rt9466_get_mivr(info, &mivr); if (ret < 0) goto out; /* Check if there's a suitable AICL_VTH */ aicl_vth = mivr + 200000; if (aicl_vth > RT9466_AICL_VTH_MAX) { rt_debug("%s: no suitable vth, vth = %d\n", __func__, aicl_vth); ret = -EINVAL; goto out; } ret = rt9466_set_aicl_vth(info, aicl_vth); if (ret < 0) goto out; /* Clear AICL measurement IRQ */ rt9466_irq_clr_flag(info, &info->irq_flag[RT9466_IRQIDX_CHG_IRQ2], RT9466_MASK_CHG_AICLMEASI); mutex_lock(&info->pe_access_lock); mutex_lock(&info->aicr_access_lock); ret = rt9466_set_bit(info, RT9466_REG_CHG_CTRL14, RT9466_MASK_AICL_MEAS); if (ret < 0) goto unlock_out; ret = wait_event_interruptible_timeout(info->wait_queue, info->irq_flag[RT9466_IRQIDX_CHG_IRQ2] & RT9466_MASK_CHG_AICLMEASI, msecs_to_jiffies(3500)); if (ret <= 0) { rt_debug("%s: wait AICL time out\n", __func__); ret = -EIO; goto unlock_out; } ret = rt9466_get_aicr(info->chg_dev, &aicr); if (ret < 0) goto unlock_out; info->aicr_limit = aicr; rt_debug("%s: OK, aicr upper bound = %dmA\n", __func__, aicr / 1000); unlock_out: mutex_unlock(&info->aicr_access_lock); mutex_unlock(&info->pe_access_lock); out: return ret; } /* Prevent back boost */ static int rt9466_toggle_cfo(struct rt9466_info *info) { int ret = 0; u8 data = 0; rt_info("%s\n", __func__); mutex_lock(&info->i2c_access_lock); ret = rt9466_device_read(info->client, RT9466_REG_CHG_CTRL2, 1, &data); if (ret < 0) { rt_debug("%s read cfo fail(%d)\n", __func__, ret); goto out; } /* CFO off */ data &= ~RT9466_MASK_CFO_EN; ret = rt9466_device_write(info->client, RT9466_REG_CHG_CTRL2, 1, &data); if (ret < 0) { rt_debug("%s cfo off fail(%d)\n", __func__, ret); goto out; } /* CFO on */ data |= RT9466_MASK_CFO_EN; ret = rt9466_device_write(info->client, RT9466_REG_CHG_CTRL2, 1, &data); if (ret < 0) rt_debug("%s cfo on fail(%d)\n", __func__, ret); out: mutex_unlock(&info->i2c_access_lock); return ret; } /* IRQ handlers */ static int rt9466_pwr_rdy_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_mivr_irq_handler(struct rt9466_info *info) { int ret = 0; bool mivr_act = false; int adc_ibus = 0; rt_debug("%s\n", __func__); /* Check whether MIVR loop is active */ ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_STATC, RT9466_SHIFT_CHG_MIVR, &mivr_act); if (ret < 0) { rt_debug("%s: read mivr stat failed\n", __func__); goto out; } if (!mivr_act) { rt_info("%s: mivr loop is not active\n", __func__); goto out; } if (strcmp(info->desc->chg_dev_name, "primary_chg") == 0) { /* Check IBUS ADC */ ret = rt9466_get_adc(info, RT9466_ADC_IBUS, &adc_ibus); if (ret < 0) { rt_debug("%s: get ibus fail\n", __func__); return ret; } if (adc_ibus < 100000) { /* 100mA */ ret = rt9466_toggle_cfo(info); return ret; } } out: return 0; } static int rt9466_chg_aicr_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_treg_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_vsysuv_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_vsysov_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_vbatov_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_vbusov_irq_handler(struct rt9466_info *info) { int ret = 0; bool vbusov = false; struct chgdev_notify *noti = &(info->chg_dev->noti); rt_debug("%s\n", __func__); ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_FAULT, RT9466_SHIFT_VBUSOV, &vbusov); if (ret < 0) return ret; noti->vbusov_stat = vbusov; rt_info("%s: vbusov = %d\n", __func__, vbusov); charger_dev_notify(info->chg_dev, CHARGER_DEV_NOTIFY_VBUS_OVP); return 0; } static int rt9466_ts_bat_cold_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_ts_bat_cool_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_ts_bat_warm_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_ts_bat_hot_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_ts_statci_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_faulti_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_statci_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_tmri_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); charger_dev_notify(info->chg_dev, CHARGER_DEV_NOTIFY_SAFETY_TIMEOUT); return 0; } static int rt9466_chg_batabsi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_adpbadi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_rvpi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_otpi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_aiclmeasi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); rt9466_irq_set_flag(info, &info->irq_flag[RT9466_IRQIDX_CHG_IRQ2], RT9466_MASK_CHG_AICLMEASI); wake_up_interruptible(&info->wait_queue); return 0; } static int rt9466_chg_ichgmeasi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_wdtmri_irq_handler(struct rt9466_info *info) { int ret = 0; rt_debug("%s\n", __func__); ret = rt9466_kick_wdt(info->chg_dev); if (ret < 0) rt_debug("%s: kick wdt fail\n", __func__); return ret; } static int rt9466_ssfinishi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_rechgi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); charger_dev_notify(info->chg_dev, CHARGER_DEV_NOTIFY_RECHG); return 0; } static int rt9466_chg_termi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_chg_ieoci_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); charger_dev_notify(info->chg_dev, CHARGER_DEV_NOTIFY_EOC); return 0; } static int rt9466_adc_donei_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_pumpx_donei_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_bst_batuvi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_bst_midovi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } static int rt9466_bst_olpi_irq_handler(struct rt9466_info *info) { rt_debug("%s\n", __func__); return 0; } typedef int (*rt9466_irq_fptr)(struct rt9466_info *); static rt9466_irq_fptr rt9466_irq_handler_tbl[48] = { NULL, NULL, NULL, NULL, rt9466_chg_treg_irq_handler, rt9466_chg_aicr_irq_handler, rt9466_chg_mivr_irq_handler, rt9466_pwr_rdy_irq_handler, NULL, NULL, NULL, NULL, rt9466_chg_vsysuv_irq_handler, rt9466_chg_vsysov_irq_handler, rt9466_chg_vbatov_irq_handler, rt9466_chg_vbusov_irq_handler, NULL, NULL, NULL, NULL, rt9466_ts_bat_cold_irq_handler, rt9466_ts_bat_cool_irq_handler, rt9466_ts_bat_warm_irq_handler, rt9466_ts_bat_hot_irq_handler, rt9466_ts_statci_irq_handler, rt9466_chg_faulti_irq_handler, rt9466_chg_statci_irq_handler, rt9466_chg_tmri_irq_handler, rt9466_chg_batabsi_irq_handler, rt9466_chg_adpbadi_irq_handler, rt9466_chg_rvpi_irq_handler, rt9466_chg_otpi_irq_handler, rt9466_chg_aiclmeasi_irq_handler, rt9466_chg_ichgmeasi_irq_handler, NULL, rt9466_wdtmri_irq_handler, rt9466_ssfinishi_irq_handler, rt9466_chg_rechgi_irq_handler, rt9466_chg_termi_irq_handler, rt9466_chg_ieoci_irq_handler, rt9466_adc_donei_irq_handler, rt9466_pumpx_donei_irq_handler, NULL, NULL, NULL, rt9466_bst_batuvi_irq_handler, rt9466_bst_midovi_irq_handler, rt9466_bst_olpi_irq_handler, }; static inline int rt9466_enable_irqrez(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL13, RT9466_MASK_IRQ_REZ); } static int __rt9466_irq_handler(struct rt9466_info *info) { int ret = 0, i = 0, j = 0; u8 evt[RT9466_IRQIDX_MAX] = {0}; u8 mask[RT9466_IRQIDX_MAX] = {0}; u8 stat[RT9466_IRQSTAT_MAX] = {0}; rt_info("%s\n", __func__); /* Read event and skip CHG_IRQ3 */ ret = rt9466_i2c_block_read(info, RT9466_REG_CHG_IRQ1, 2, &evt[3]); if (ret < 0) { rt_debug("%s: read evt fail(%d)\n", __func__, ret); goto err_read_irq; } ret = rt9466_i2c_block_read(info, RT9466_REG_CHG_STATC, 3, evt); if (ret < 0) { rt_debug("%s: read stat fail(%d)\n", __func__, ret); goto err_read_irq; } /* Read mask */ ret = rt9466_i2c_block_read(info, RT9466_REG_CHG_STATC_CTRL, ARRAY_SIZE(mask), mask); if (ret < 0) { rt_debug("%s: read mask fail(%d)\n", __func__, ret); goto err_read_irq; } /* Store/Update stat */ memcpy(stat, info->irq_stat, RT9466_IRQSTAT_MAX); for (i = 0; i < RT9466_IRQIDX_MAX; i++) { evt[i] &= ~mask[i]; if (i <= RT9466_IRQIDX_TS_STATC) { info->irq_stat[i] = evt[i]; evt[i] ^= stat[i]; } for (j = 0; j < 8; j++) { if (!(evt[i] & (1 << j))) continue; if (rt9466_irq_handler_tbl[i * 8 + j]) rt9466_irq_handler_tbl[i * 8 + j](info); } } err_read_irq: return ret; } static irqreturn_t rt9466_irq_handler(int irq, void *data) { int ret = 0; struct rt9466_info *info = (struct rt9466_info *)data; rt_info("%s\n", __func__); ret = __rt9466_irq_handler(info); ret = rt9466_enable_irqrez(info, true); if (ret < 0) rt_debug("%s: en irqrez fail\n", __func__); return IRQ_HANDLED; } static int rt9466_irq_register(struct rt9466_info *info) { int ret = 0, len = 0; char *name = NULL; if (strcmp(info->desc->chg_dev_name, "secondary_chg") == 0) return 0; rt_info("%s\n", __func__); /* request gpio */ len = strlen(info->desc->chg_dev_name); name = devm_kzalloc(info->dev, len + 10, GFP_KERNEL); snprintf(name, len + 10, "%s_irq_gpio", info->desc->chg_dev_name); rt_info("%s: irq = %d\n", __func__, info->irq); /* Request threaded IRQ */ name = devm_kzalloc(info->dev, len + 5, GFP_KERNEL); snprintf(name, len + 5, "%s_irq", info->desc->chg_dev_name); ret = devm_request_threaded_irq(info->dev, info->irq, NULL, rt9466_irq_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, name, info); if (ret < 0) { rt_debug("%s: request thread irq fail\n", __func__); return ret; } device_init_wakeup(info->dev, true); return 0; } static inline int rt9466_maskall_irq(struct rt9466_info *info) { rt_info("%s\n", __func__); return rt9466_i2c_block_write(info, RT9466_REG_CHG_STATC_CTRL, ARRAY_SIZE(rt9466_irq_maskall), rt9466_irq_maskall); } static inline int rt9466_irq_init(struct rt9466_info *info) { rt_info("%s\n", __func__); return rt9466_i2c_block_write(info, RT9466_REG_CHG_STATC_CTRL, ARRAY_SIZE(info->irq_mask), info->irq_mask); } static bool rt9466_is_hw_exist(struct rt9466_info *info) { int ret = 0; u8 vendor_id = 0, chip_rev = 0; ret = i2c_smbus_read_byte_data(info->client, RT9466_REG_DEVICE_ID); if (ret < 0) return false; vendor_id = ret & 0xF0; chip_rev = ret & 0x0F; if (vendor_id != RT9466_VENDOR_ID) { rt_debug("%s: vendor id is incorrect (0x%02X)\n", __func__, vendor_id); return false; } rt_info("%s: 0x%02X\n", __func__, chip_rev); info->chip_rev = chip_rev; return true; } static int rt9466_set_safety_timer(struct rt9466_info *info, u32 hr) { u8 reg_st = 0; reg_st = rt9466_closest_reg_via_tbl(rt9466_safety_timer, ARRAY_SIZE(rt9466_safety_timer), hr); rt_info("%s: time = %d(0x%02X)\n", __func__, hr, reg_st); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL12, reg_st << RT9466_SHIFT_WT_FC, RT9466_MASK_WT_FC); } static int rt9466_enable_wdt(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL13, RT9466_MASK_WDT_EN); } static int rt9466_select_input_current_limit(struct rt9466_info *info, enum rt9466_iin_limit_sel sel) { rt_info("%s: sel = %d\n", __func__, sel); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL2, sel << RT9466_SHIFT_IINLMTSEL, RT9466_MASK_IINLMTSEL); } static int rt9466_enable_hidden_mode(struct rt9466_info *info, bool en) { int ret = 0; mutex_lock(&info->hidden_mode_lock); if (en) { if (info->hidden_mode_cnt == 0) { ret = rt9466_i2c_block_write(info, 0x70, ARRAY_SIZE(rt9466_val_en_hidden_mode), rt9466_val_en_hidden_mode); if (ret < 0) goto err; } info->hidden_mode_cnt++; } else { if (info->hidden_mode_cnt == 1) /* last one */ ret = rt9466_i2c_write_byte(info, 0x70, 0x00); info->hidden_mode_cnt--; if (ret < 0) goto err; } rt_debug("%s: en = %d\n", __func__, en); goto out; err: rt_debug("%s: en = %d fail(%d)\n", __func__, en, ret); out: mutex_unlock(&info->hidden_mode_lock); return ret; } static int rt9466_set_iprec(struct rt9466_info *info, u32 iprec) { u8 reg_iprec = 0; reg_iprec = rt9466_closest_reg(RT9466_IPREC_MIN, RT9466_IPREC_MAX, RT9466_IPREC_STEP, iprec); rt_info("%s: iprec = %d(0x%02X)\n", __func__, iprec, reg_iprec); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL8, reg_iprec << RT9466_SHIFT_IPREC, RT9466_MASK_IPREC); } static int rt9466_sw_workaround(struct rt9466_info *info) { int ret = 0; rt_info("%s\n", __func__); rt9466_enable_hidden_mode(info, true); /* Disable TS auto sensing */ ret = rt9466_clr_bit(info, RT9466_REG_CHG_HIDDEN_CTRL15, 0x01); if (ret < 0) goto out; /* Set precharge current to 850mA, only do this in normal boot */ if (info->chip_rev <= RT9466_CHIP_REV_E3) { /* Worst case delay: wait auto sensing */ msleep(200); if (get_boot_mode() == NORMAL_BOOT) { ret = rt9466_set_iprec(info, 850000); if (ret < 0) goto out; /* Increase Isys drop threshold to 2.5A */ ret = rt9466_i2c_write_byte(info, RT9466_REG_CHG_HIDDEN_CTRL7, 0x1c); if (ret < 0) goto out; } } /* Only revision <= E1 needs the following workaround */ if (info->chip_rev > RT9466_CHIP_REV_E1) goto out; /* ICC: modify sensing node, make it more accurate */ ret = rt9466_i2c_write_byte(info, RT9466_REG_CHG_HIDDEN_CTRL8, 0x00); if (ret < 0) goto out; /* DIMIN level */ ret = rt9466_i2c_write_byte(info, RT9466_REG_CHG_HIDDEN_CTRL9, 0x86); out: rt9466_enable_hidden_mode(info, false); return ret; } static int rt9466_enable_hz(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL1, RT9466_MASK_HZ_EN); } /* Reset all registers' value to default */ static int rt9466_reset_chip(struct rt9466_info *info) { int ret = 0; rt_info("%s\n", __func__); /* disable hz before reset chip */ ret = rt9466_enable_hz(info, false); if (ret < 0) { rt_debug("%s: disable hz fail\n", __func__); return ret; } return rt9466_set_bit(info, RT9466_REG_CORE_CTRL0, RT9466_MASK_RST); } static inline int __rt9466_enable_te(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL2, RT9466_MASK_TE_EN); } static inline int __rt9466_enable_safety_timer(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL12, RT9466_MASK_TMR_EN); } static int __rt9466_set_ieoc(struct rt9466_info *info, u32 ieoc) { int ret = 0; u8 reg_ieoc = 0; /* IEOC workaround */ if (info->ieoc_wkard) ieoc += 100000; /* 100mA */ reg_ieoc = rt9466_closest_reg(RT9466_IEOC_MIN, RT9466_IEOC_MAX, RT9466_IEOC_STEP, ieoc); rt_info("%s: ieoc = %d(0x%02X)\n", __func__, ieoc, reg_ieoc); ret = rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL9, reg_ieoc << RT9466_SHIFT_IEOC, RT9466_MASK_IEOC); /* Store IEOC */ return rt9466_get_ieoc(info, &info->ieoc); } static int rt9466_get_mivr(struct rt9466_info *info, u32 *mivr) { int ret = 0; u8 reg_mivr = 0; ret = rt9466_i2c_read_byte(info, RT9466_REG_CHG_CTRL6); if (ret < 0) return ret; reg_mivr = ((ret & RT9466_MASK_MIVR) >> RT9466_SHIFT_MIVR) & 0xFF; *mivr = rt9466_closest_value(RT9466_MIVR_MIN, RT9466_MIVR_MAX, RT9466_MIVR_STEP, reg_mivr); return ret; } static int __rt9466_set_mivr(struct rt9466_info *info, u32 mivr) { u8 reg_mivr = 0; reg_mivr = rt9466_closest_reg(RT9466_MIVR_MIN, RT9466_MIVR_MAX, RT9466_MIVR_STEP, mivr); rt_info("%s: mivr = %d(0x%02X)\n", __func__, mivr, reg_mivr); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL6, reg_mivr << RT9466_SHIFT_MIVR, RT9466_MASK_MIVR); } static int rt9466_enable_jeita(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL16, RT9466_MASK_JEITA_EN); } static int rt9466_get_charging_status(struct rt9466_info *info, enum rt9466_charging_status *chg_stat) { int ret = 0; ret = rt9466_i2c_read_byte(info, RT9466_REG_CHG_STAT); if (ret < 0) return ret; *chg_stat = (ret & RT9466_MASK_CHG_STAT) >> RT9466_SHIFT_CHG_STAT; return ret; } static int rt9466_get_ieoc(struct rt9466_info *info, u32 *ieoc) { int ret = 0; u8 reg_ieoc = 0; ret = rt9466_i2c_read_byte(info, RT9466_REG_CHG_CTRL9); if (ret < 0) return ret; reg_ieoc = (ret & RT9466_MASK_IEOC) >> RT9466_SHIFT_IEOC; *ieoc = rt9466_closest_value(RT9466_IEOC_MIN, RT9466_IEOC_MAX, RT9466_IEOC_STEP, reg_ieoc); return ret; } static inline int __rt9466_is_charging_enable(struct rt9466_info *info, bool *en) { return rt9466_i2c_test_bit(info, RT9466_REG_CHG_CTRL2, RT9466_SHIFT_CHG_EN, en); } static inline int rt9466_ichg_workaround(struct rt9466_info *info, u32 uA) { int ret = 0; /* Vsys short protection */ rt9466_enable_hidden_mode(info, true); if (info->ichg >= 900000 && uA < 900000) ret = rt9466_i2c_update_bits(info, RT9466_REG_CHG_HIDDEN_CTRL7, 0x00, 0x60); else if (uA >= 900000 && info->ichg < 900000) ret = rt9466_i2c_update_bits(info, RT9466_REG_CHG_HIDDEN_CTRL7, 0x40, 0x60); rt9466_enable_hidden_mode(info, false); return ret; } static int __rt9466_set_ichg(struct rt9466_info *info, u32 ichg) { int ret = 0; u8 reg_ichg = 0; if (strcmp(info->desc->chg_dev_name, "primary_chg") == 0) { ichg = (ichg < 500000) ? 500000 : ichg; rt9466_ichg_workaround(info, ichg); } reg_ichg = rt9466_closest_reg(RT9466_ICHG_MIN, RT9466_ICHG_MAX, RT9466_ICHG_STEP, ichg); rt_info("%s: ichg = %d(0x%02X)\n", __func__, ichg, reg_ichg); ret = rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL7, reg_ichg << RT9466_SHIFT_ICHG, RT9466_MASK_ICHG); /* Store Ichg setting */ rt9466_get_ichg(info->chg_dev, &info->ichg); /* Workaround to make IEOC accurate */ if (ichg < 900000 && !info->ieoc_wkard) { /* 900mA */ ret = __rt9466_set_ieoc(info, info->ieoc + 100000); info->ieoc_wkard = true; } else if (ichg >= 900000 && info->ieoc_wkard) { info->ieoc_wkard = false; ret = __rt9466_set_ieoc(info, info->ieoc - 100000); } return ret; } static int __rt9466_set_cv(struct rt9466_info *info, u32 cv) { u8 reg_cv = 0; reg_cv = rt9466_closest_reg(RT9466_CV_MIN, RT9466_CV_MAX, RT9466_CV_STEP, cv); rt_info("%s: cv = %d(0x%02X)\n", __func__, cv, reg_cv); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL4, reg_cv << RT9466_SHIFT_CV, RT9466_MASK_CV); } static int rt9466_set_ircmp_resistor(struct rt9466_info *info, u32 uohm) { u8 reg_resistor = 0; reg_resistor = rt9466_closest_reg(RT9466_IRCMP_RES_MIN, RT9466_IRCMP_RES_MAX, RT9466_IRCMP_RES_STEP, uohm); rt_info("%s: resistor = %d(0x%02X)\n", __func__, uohm, reg_resistor); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL18, reg_resistor << RT9466_SHIFT_IRCMP_RES, RT9466_MASK_IRCMP_RES); } static int rt9466_set_ircmp_vclamp(struct rt9466_info *info, u32 uV) { u8 reg_vclamp = 0; reg_vclamp = rt9466_closest_reg(RT9466_IRCMP_VCLAMP_MIN, RT9466_IRCMP_VCLAMP_MAX, RT9466_IRCMP_VCLAMP_STEP, uV); rt_info("%s: vclamp = %d(0x%02X)\n", __func__, uV, reg_vclamp); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL18, reg_vclamp << RT9466_SHIFT_IRCMP_VCLAMP, RT9466_MASK_IRCMP_VCLAMP); } static int rt9466_enable_pump_express(struct rt9466_info *info, bool en) { int ret = 0, i = 0; bool pumpx_en = false; const int max_wait_times = 3; rt_info("%s: en = %d\n", __func__, en); ret = rt9466_set_aicr(info->chg_dev, 800000); if (ret < 0) return ret; ret = rt9466_set_ichg(info->chg_dev, 2000000); if (ret < 0) return ret; ret = rt9466_enable_charging(info->chg_dev, true); if (ret < 0) return ret; rt9466_enable_hidden_mode(info, true); ret = rt9466_clr_bit(info, RT9466_REG_CHG_HIDDEN_CTRL9, 0x80); if (ret < 0) rt_debug("%s: disable skip mode fail\n", __func__); ret = (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL17, RT9466_MASK_PUMPX_EN); if (ret < 0) goto out; for (i = 0; i < max_wait_times; i++) { msleep(2500); ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_CTRL17, RT9466_SHIFT_PUMPX_EN, &pumpx_en); if (ret >= 0 && !pumpx_en) break; } if (i == max_wait_times) { rt_debug("%s: pumpx done fail(%d)\n", __func__, ret); ret = -EIO; } else ret = 0; out: rt9466_set_bit(info, RT9466_REG_CHG_HIDDEN_CTRL9, 0x80); rt9466_enable_hidden_mode(info, false); return ret; } static int rt9466_enable_irq_pulse(struct rt9466_info *info, bool en) { rt_info("%s: en = %d\n", __func__, en); return (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL1, RT9466_MASK_IRQ_PULSE); } static int rt9466_disable_charger_reset(struct rt9466_info *info, bool disable) { rt_info("%s: en = %d\n", __func__, disable); return (disable ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL19, RT9466_MASK_RESET_DISABLE); } static inline int rt9466_get_irq_number(struct rt9466_info *info, const char *name) { int i = 0; if (!name) { rt_debug("%s: null name\n", __func__); return -EINVAL; } for (i = 0; i < ARRAY_SIZE(rt9466_irq_mapping_tbl); i++) { if (!strcmp(name, rt9466_irq_mapping_tbl[i].name)) return rt9466_irq_mapping_tbl[i].id; } return -EINVAL; } static int rt9466_parse_dt(struct rt9466_info *info, struct device *dev) { int ret = 0, irq_cnt = 0; struct rt9466_desc *desc = NULL; struct device_node *np = dev->of_node; const char *name = NULL; int irqnum = 0; rt_info("%s\n", __func__); if (!np) { rt_debug("%s: no device node\n", __func__); return -EINVAL; } info->desc = &rt9466_default_desc; desc = devm_kzalloc(dev, sizeof(struct rt9466_desc), GFP_KERNEL); if (!desc) return -ENOMEM; memcpy(desc, &rt9466_default_desc, sizeof(struct rt9466_desc)); if (of_property_read_string(np, "charger_name", &desc->chg_dev_name) < 0) rt_debug("%s: no charger name\n", __func__); info->irq = irq_of_parse_and_map(np, 0); /* request ceb gpio for secondary charger */ if (strcmp(desc->chg_dev_name, "secondary_chg") == 0) { ret = devm_gpio_request_one(info->dev, info->ceb_gpio, GPIOF_DIR_OUT, "rt9466_sec_ceb_gpio"); if (ret < 0) { rt_debug("%s: ceb gpio request fail\n", __func__); return ret; } } if (of_property_read_u32(np, "regmap_represent_slave_addr", &desc->regmap_represent_slave_addr) < 0) rt_debug("%s: no regmap slave addr\n", __func__); if (of_property_read_string(np, "regmap_name", &(desc->regmap_name)) < 0) rt_debug("%s: no regmap name\n", __func__); if (of_property_read_u32(np, "ichg", &desc->ichg) < 0) rt_debug("%s: no ichg\n", __func__); if (of_property_read_u32(np, "aicr", &desc->aicr) < 0) rt_debug("%s: no aicr\n", __func__); if (of_property_read_u32(np, "mivr", &desc->mivr) < 0) rt_debug("%s: no mivr\n", __func__); if (of_property_read_u32(np, "cv", &desc->cv) < 0) rt_debug("%s: no cv\n", __func__); if (of_property_read_u32(np, "ieoc", &desc->ieoc) < 0) rt_debug("%s: no ieoc\n", __func__); if (of_property_read_u32(np, "safety_timer", &desc->safety_timer) < 0) rt_debug("%s: no safety timer\n", __func__); if (of_property_read_u32(np, "ircmp_resistor", &desc->ircmp_resistor) < 0) rt_debug("%s: no ircmp resistor\n", __func__); if (of_property_read_u32(np, "ircmp_vclamp", &desc->ircmp_vclamp) < 0) rt_debug("%s: no ircmp vclamp\n", __func__); desc->en_te = of_property_read_bool(np, "en_te"); desc->en_wdt = of_property_read_bool(np, "en_wdt"); desc->en_irq_pulse = of_property_read_bool(np, "en_irq_pulse"); desc->en_jeita = of_property_read_bool(np, "en_jeita"); desc->ceb_invert = of_property_read_bool(np, "ceb_invert"); while (true) { ret = of_property_read_string_index(np, "rt-interrupt-names", irq_cnt, &name); if (ret < 0) break; irq_cnt++; irqnum = rt9466_get_irq_number(info, name); if (irqnum >= 0) rt9466_irq_unmask(info, irqnum); } info->desc = desc; return 0; } /* =========================================================== */ /* Released interfaces */ /* =========================================================== */ static int rt9466_enable_charging(struct charger_device *chg_dev, bool en) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); u32 ichg_ramp_t = 0; rt_info("%s: en = %d\n", __func__, en); /* set hz/ceb pin for secondary charger */ if (strcmp(info->desc->chg_dev_name, "secondary_chg") == 0) { ret = rt9466_enable_hz(info, !en); if (ret < 0) { rt_debug("%s: set hz of sec chg fail\n", __func__); return ret; } if (info->desc->ceb_invert) gpio_set_value(info->ceb_gpio, en); else gpio_set_value(info->ceb_gpio, !en); } /* Workaround for vsys overshoot */ mutex_lock(&info->ichg_access_lock); mutex_lock(&info->ieoc_lock); if (info->ichg <= 500000) goto out; if (!en) { info->ichg_dis_chg = info->ichg; ichg_ramp_t = (info->ichg - 500000) / 50000 * 2; /* Set ichg to 500mA */ ret = __rt9466_set_ichg(info, 500000); if (ret < 0) { dev_notice(info->dev, "%s: set ichg fail\n", __func__); goto vsys_overshoot_err; } msleep(ichg_ramp_t); } else { if (info->ichg == info->ichg_dis_chg) { ret = __rt9466_set_ichg(info, info->ichg); if (ret < 0) { dev_notice(info->dev, "%s: set ichg fail\n", __func__); goto vsys_overshoot_err; } } } out: ret = (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL2, RT9466_MASK_CHG_EN); vsys_overshoot_err: mutex_unlock(&info->ichg_access_lock); mutex_unlock(&info->ieoc_lock); return ret; } static int rt9466_enable_safety_timer(struct charger_device *chg_dev, bool en) { struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); return __rt9466_enable_safety_timer(info, en); } static int rt9466_set_boost_current_limit(struct charger_device *chg_dev, u32 current_limit) { u8 reg_ilimit = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); reg_ilimit = rt9466_closest_reg_via_tbl(rt9466_boost_oc_threshold, ARRAY_SIZE(rt9466_boost_oc_threshold), current_limit); rt_info("%s: boost ilimit = %d(0x%02X)\n", __func__, current_limit, reg_ilimit); return rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL10, reg_ilimit << RT9466_SHIFT_BOOST_OC, RT9466_MASK_BOOST_OC); } static int rt9466_enable_otg(struct charger_device *chg_dev, bool en) { int ret = 0; bool en_otg = false; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); u8 hidden_val = en ? 0x00 : 0x0F; u8 lg_slew_rate = en ? 0x7c : 0x73; rt_info("%s: en = %d\n", __func__, en); rt9466_enable_hidden_mode(info, true); /* Set OTG_OC to 500mA */ ret = rt9466_set_boost_current_limit(chg_dev, 2100000); if (ret < 0) { rt_debug("%s: set current limit fail\n", __func__); return ret; } /* * Workaround : slow Low side mos Gate driver slew rate * for decline VBUS noise * reg[0x23] = 0x7c after entering OTG mode * reg[0x23] = 0x73 after leaving OTG mode */ ret = rt9466_i2c_write_byte(info, RT9466_REG_CHG_HIDDEN_CTRL4, lg_slew_rate); if (ret < 0) { rt_debug("%s: set Low side mos Gate drive speed fail(%d)\n", __func__, ret); goto out; } /* Enable WDT */ if (en && info->desc->en_wdt) { ret = rt9466_enable_wdt(info, true); if (ret < 0) { rt_debug("%s: en wdt fail\n", __func__); goto err_en_otg; } } /* Switch OPA mode */ ret = (en ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL1, RT9466_MASK_OPA_MODE); msleep(20); if (en) { ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_CTRL1, RT9466_SHIFT_OPA_MODE, &en_otg); if (ret < 0 || !en_otg) { rt_debug("%s: otg fail(%d)\n", __func__, ret); goto err_en_otg; } } /* * Workaround reg[0x25] = 0x00 after entering OTG mode * reg[0x25] = 0x0F after leaving OTG mode */ ret = rt9466_i2c_write_byte(info, RT9466_REG_CHG_HIDDEN_CTRL6, hidden_val); if (ret < 0) rt_debug("%s: workaroud fail(%d)\n", __func__, ret); /* Disable WDT */ if (!en) { ret = rt9466_enable_wdt(info, false); if (ret < 0) rt_debug("%s: disable wdt fail\n", __func__); } goto out; err_en_otg: /* Disable WDT */ ret = rt9466_enable_wdt(info, false); if (ret < 0) rt_debug("%s: disable wdt fail\n", __func__); /* Recover Low side mos Gate slew rate */ ret = rt9466_i2c_write_byte(info, RT9466_REG_CHG_HIDDEN_CTRL4, 0x73); if (ret < 0) rt_debug("%s: recover Low side mos Gate drive speed fail(%d)\n", __func__, ret); ret = -EIO; out: rt9466_enable_hidden_mode(info, false); return ret; } static int rt9466_enable_discharge(struct charger_device *chg_dev, bool en) { int ret = 0, i = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); const int check_dischg_max = 3; bool is_dischg = true; rt_info("%s: en = %d\n", __func__, en); ret = rt9466_enable_hidden_mode(info, true); if (ret < 0) return ret; /* Set bit2 of reg[0x21] to 1 to enable discharging */ ret = (en ? rt9466_set_bit : rt9466_clr_bit)(info, RT9466_REG_CHG_HIDDEN_CTRL2, 0x04); if (ret < 0) { rt_debug("%s: en = %d, failed\n", __func__, en); return ret; } if (!en) { for (i = 0; i < check_dischg_max; i++) { ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_HIDDEN_CTRL2, 2, &is_dischg); if (ret >= 0 && !is_dischg) break; /* Disable discharging */ ret = rt9466_clr_bit(info, RT9466_REG_CHG_HIDDEN_CTRL2, 0x04); } if (i == check_dischg_max) rt_debug("%s: disable dischg fail(%d)\n", __func__, ret); } rt9466_enable_hidden_mode(info, false); return ret; } static int rt9466_enable_power_path(struct charger_device *chg_dev, bool en) { u32 mivr = (en ? 4500000 : RT9466_MIVR_MAX); struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); rt_info("%s: en = %d\n", __func__, en); return __rt9466_set_mivr(info, mivr); } static int rt9466_is_power_path_enable(struct charger_device *chg_dev, bool *en) { int ret = 0; u32 mivr = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = rt9466_get_mivr(info, &mivr); if (ret < 0) return ret; *en = ((mivr == RT9466_MIVR_MAX) ? false : true); return ret; } static int rt9466_set_ichg(struct charger_device *chg_dev, u32 ichg) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); mutex_lock(&info->ichg_access_lock); mutex_lock(&info->ieoc_lock); ret = __rt9466_set_ichg(info, ichg); mutex_unlock(&info->ieoc_lock); mutex_unlock(&info->ichg_access_lock); return ret; } static int rt9466_set_ieoc(struct charger_device *chg_dev, u32 ieoc) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); mutex_lock(&info->ichg_access_lock); mutex_lock(&info->ieoc_lock); ret = __rt9466_set_ieoc(info, ieoc); mutex_unlock(&info->ieoc_lock); mutex_unlock(&info->ichg_access_lock); return ret; } static int rt9466_set_aicr(struct charger_device *chg_dev, u32 aicr) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); mutex_lock(&info->aicr_access_lock); ret = __rt9466_set_aicr(info, aicr); mutex_unlock(&info->aicr_access_lock); return ret; } static int rt9466_set_mivr(struct charger_device *chg_dev, u32 mivr) { int ret = 0; bool en = true; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = rt9466_is_power_path_enable(chg_dev, &en); if (ret < 0) { rt_debug("%s: get power path en fail\n", __func__); return ret; } if (!en) { rt_info("%s: power path is disabled, op is not allowed\n", __func__); return -EINVAL; } return __rt9466_set_mivr(info, mivr); } static int rt9466_set_cv(struct charger_device *chg_dev, u32 cv) { struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); return __rt9466_set_cv(info, cv); } static int rt9466_set_pep_current_pattern(struct charger_device *chg_dev, bool is_increase) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); rt_info("%s: pump_up = %d\n", __func__, is_increase); mutex_lock(&info->pe_access_lock); /* Set to PE1.0 */ ret = rt9466_clr_bit(info, RT9466_REG_CHG_CTRL17, RT9466_MASK_PUMPX_20_10); /* Set Pump Up/Down */ ret = (is_increase ? rt9466_set_bit : rt9466_clr_bit) (info, RT9466_REG_CHG_CTRL17, RT9466_MASK_PUMPX_UP_DN); /* Enable PumpX */ ret = rt9466_enable_pump_express(info, true); mutex_unlock(&info->pe_access_lock); return ret; } static int rt9466_set_pep20_reset(struct charger_device *chg_dev) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); mutex_lock(&info->pe_access_lock); ret = rt9466_set_mivr(chg_dev, 4500000); if (ret < 0) goto out; /* Disable PSK mode */ rt9466_enable_hidden_mode(info, true); ret = rt9466_clr_bit(info, RT9466_REG_CHG_HIDDEN_CTRL9, 0x80); if (ret < 0) rt_debug("%s: disable skip mode fail\n", __func__); ret = rt9466_set_aicr(chg_dev, 100000); if (ret < 0) goto psk_out; msleep(250); ret = rt9466_set_aicr(chg_dev, 700000); psk_out: rt9466_set_bit(info, RT9466_REG_CHG_HIDDEN_CTRL9, 0x80); rt9466_enable_hidden_mode(info, false); out: mutex_unlock(&info->pe_access_lock); return ret; } static int rt9466_set_pep20_current_pattern(struct charger_device *chg_dev, u32 uV) { int ret = 0; u8 reg_volt = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); mutex_lock(&info->pe_access_lock); reg_volt = rt9466_closest_reg(RT9466_PEP20_VOLT_MIN, RT9466_PEP20_VOLT_MAX, RT9466_PEP20_VOLT_STEP, uV); rt_info("%s: volt = %d(0x%02X)\n", __func__, uV, reg_volt); /* Set to PEP2.0 */ ret = rt9466_set_bit(info, RT9466_REG_CHG_CTRL17, RT9466_MASK_PUMPX_20_10); if (ret < 0) goto out; /* Set Voltage */ ret = rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL17, reg_volt << RT9466_SHIFT_PUMPX_DEC, RT9466_MASK_PUMPX_DEC); if (ret < 0) goto out; /* Enable PumpX */ ret = rt9466_enable_pump_express(info, true); out: mutex_unlock(&info->pe_access_lock); return ret; } static int rt9466_enable_cable_drop_comp(struct charger_device *chg_dev, bool en) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); rt_info("%s: en = %d\n", __func__, en); mutex_lock(&info->pe_access_lock); /* Set to PEP2.0 */ ret = rt9466_set_bit(info, RT9466_REG_CHG_CTRL17, RT9466_MASK_PUMPX_20_10); if (ret < 0) goto out; /* Set Voltage */ ret = rt9466_i2c_update_bits(info, RT9466_REG_CHG_CTRL17, 0x1F << RT9466_SHIFT_PUMPX_DEC, RT9466_MASK_PUMPX_DEC); if (ret < 0) goto out; /* Enable PumpX */ ret = rt9466_enable_pump_express(info, true); out: mutex_unlock(&info->pe_access_lock); return ret; } static int rt9466_get_ichg(struct charger_device *chg_dev, u32 *ichg) { int ret = 0; u8 reg_ichg = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = rt9466_i2c_read_byte(info, RT9466_REG_CHG_CTRL7); if (ret < 0) return ret; reg_ichg = (ret & RT9466_MASK_ICHG) >> RT9466_SHIFT_ICHG; *ichg = rt9466_closest_value(RT9466_ICHG_MIN, RT9466_ICHG_MAX, RT9466_ICHG_STEP, reg_ichg); return ret; } static int rt9466_get_aicr(struct charger_device *chg_dev, u32 *aicr) { int ret = 0; u8 reg_aicr = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = rt9466_i2c_read_byte(info, RT9466_REG_CHG_CTRL3); if (ret < 0) return ret; reg_aicr = (ret & RT9466_MASK_AICR) >> RT9466_SHIFT_AICR; *aicr = rt9466_closest_value(RT9466_AICR_MIN, RT9466_AICR_MAX, RT9466_AICR_STEP, reg_aicr); return ret; } static int rt9466_get_cv(struct charger_device *chg_dev, u32 *cv) { int ret = 0; u8 reg_cv = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = rt9466_i2c_read_byte(info, RT9466_REG_CHG_CTRL4); if (ret < 0) return ret; reg_cv = (ret & RT9466_MASK_CV) >> RT9466_SHIFT_CV; *cv = rt9466_closest_value(RT9466_CV_MIN, RT9466_CV_MAX, RT9466_CV_STEP, reg_cv); return ret; } static int rt9466_get_tchg(struct charger_device *chg_dev, int *tchg_min, int *tchg_max) { int ret = 0, adc_temp = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); bool hz_en = false; u32 retry_cnt = 3; /* Check HZ mode */ ret = rt9466_i2c_test_bit(info, RT9466_REG_CHG_CTRL1, RT9466_SHIFT_HZ_EN, &hz_en); if (ret < 0) return ret; if (hz_en) { *tchg_min = 25; *tchg_max = 25; return -EINVAL; } /* Get value from ADC */ ret = rt9466_get_adc(info, RT9466_ADC_TEMP_JC, &adc_temp); if (ret < 0) return ret; /* Check unusual temperature */ while (adc_temp >= 120 && retry_cnt > 0) { dev_notice(info->dev, "%s: [WARNING] t = %d\n", __func__, adc_temp); rt9466_get_adc(info, RT9466_ADC_VBAT, &adc_temp); ret = rt9466_get_adc(info, RT9466_ADC_TEMP_JC, &adc_temp); retry_cnt--; } if (ret < 0) return ret; mutex_lock(&info->tchg_lock); /* Use previous one to prevent system from rebooting */ if (adc_temp >= 120) adc_temp = info->tchg; else info->tchg = adc_temp; mutex_unlock(&info->tchg_lock); *tchg_min = adc_temp; *tchg_max = adc_temp; rt_info("%s: temperature = %d\n", __func__, adc_temp); return ret; } #if NEED_USE /* Uncomment if you need this API */ static int rt9466_get_vbus(struct charger_device *chg_dev, u32 *vbus) { int ret = 0, adc_vbus = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); /* Get value from ADC */ ret = rt9466_get_adc(info, RT9466_ADC_VBUS_DIV2, &adc_vbus); if (ret < 0) return ret; *vbus = adc_vbus; dev_info(info->dev, "%s: vbus = %dmA\n", __func__, adc_vbus); return ret; } #endif static int rt9466_is_charging_done(struct charger_device *chg_dev, bool *done) { int ret = 0; enum rt9466_charging_status chg_stat = RT9466_CHG_STATUS_READY; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = rt9466_get_charging_status(info, &chg_stat); /* Return is charging done or not */ switch (chg_stat) { case RT9466_CHG_STATUS_READY: case RT9466_CHG_STATUS_PROGRESS: case RT9466_CHG_STATUS_FAULT: *done = false; break; case RT9466_CHG_STATUS_DONE: *done = true; break; default: *done = false; break; } return ret; } static int rt9466_is_safety_timer_enable(struct charger_device *chg_dev, bool *en) { struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); return rt9466_i2c_test_bit(info, RT9466_REG_CHG_CTRL12, RT9466_SHIFT_TMR_EN, en); } static int rt9466_kick_wdt(struct charger_device *chg_dev) { enum rt9466_charging_status chg_status = RT9466_CHG_STATUS_READY; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); /* Any I2C communication can reset watchdog timer */ return rt9466_get_charging_status(info, &chg_status); } static int rt9466_set_pep20_efficiency_table(struct charger_device *chg_dev) { int ret = 0; struct charger_manager *chg_mgr = NULL; chg_mgr = charger_dev_get_drvdata(chg_dev); if (!chg_mgr) return -EINVAL; chg_mgr->pe2.profile[0].vchr = 8000000; chg_mgr->pe2.profile[1].vchr = 8000000; chg_mgr->pe2.profile[2].vchr = 8000000; chg_mgr->pe2.profile[3].vchr = 8500000; chg_mgr->pe2.profile[4].vchr = 8500000; chg_mgr->pe2.profile[5].vchr = 8500000; chg_mgr->pe2.profile[6].vchr = 9000000; chg_mgr->pe2.profile[7].vchr = 9000000; chg_mgr->pe2.profile[8].vchr = 9500000; chg_mgr->pe2.profile[9].vchr = 9500000; return ret; } static int __rt9466_enable_auto_sensing(struct rt9466_info *info, bool en) { int ret = 0; u8 auto_sense = 0; u8 exit_hid = 0x00; /* enter hidden mode */ ret = rt9466_device_write(info->client, 0x70, ARRAY_SIZE(rt9466_val_en_hidden_mode), rt9466_val_en_hidden_mode); if (ret < 0) return ret; ret = rt9466_device_read(info->client, RT9466_REG_CHG_HIDDEN_CTRL15, 1, &auto_sense); if (ret < 0) { rt_debug("%s: read auto sense fail\n", __func__); goto out; } if (!en) auto_sense &= 0xFE; /* clear bit0 */ else auto_sense |= 0x01; /* set bit0 */ ret = rt9466_device_write(info->client, RT9466_REG_CHG_HIDDEN_CTRL15, 1, &auto_sense); if (ret < 0) rt_debug("%s: en = %d fail\n", __func__, en); out: return rt9466_device_write(info->client, 0x70, 1, &exit_hid); } /* * This function is used in shutdown function * Use i2c smbus directly */ static int rt9466_sw_reset(struct rt9466_info *info) { int ret = 0; u8 evt[RT9466_IRQIDX_MAX] = {0}; /* Register 0x01 ~ 0x10 */ u8 reg_data[] = { 0x10, 0x03, 0x23, 0x3C, 0x67, 0x0B, 0x4C, 0xA1, 0x3C, 0x58, 0x2C, 0x02, 0x52, 0x05, 0x00, 0x10 }; rt_info("%s\n", __func__); /* Disable auto sensing/Enable HZ,ship mode of secondary charger */ if (strcmp(info->desc->chg_dev_name, "secondary_chg") == 0) { mutex_lock(&info->hidden_mode_lock); mutex_lock(&info->i2c_access_lock); __rt9466_enable_auto_sensing(info, false); mutex_unlock(&info->i2c_access_lock); mutex_unlock(&info->hidden_mode_lock); mdelay(50); reg_data[0] = 0x14; /* HZ */ reg_data[1] = 0x83; /* Shipping mode */ } /* Mask all irq */ mutex_lock(&info->i2c_access_lock); ret = rt9466_device_write(info->client, RT9466_REG_CHG_STATC_CTRL, ARRAY_SIZE(rt9466_irq_maskall), rt9466_irq_maskall); if (ret < 0) rt_debug("%s: mask all irq fail\n", __func__); /* Read all irq */ ret = rt9466_device_read(info->client, RT9466_REG_CHG_STATC, 5, evt); if (ret < 0) rt_debug("%s: read evt fail\n", __func__); /* Reset necessary registers */ ret = rt9466_device_write(info->client, RT9466_REG_CHG_CTRL1, ARRAY_SIZE(reg_data), reg_data); if (ret < 0) rt_debug("%s: reset registers fail\n", __func__); mutex_unlock(&info->i2c_access_lock); return ret; } static int rt9466_init_setting(struct rt9466_info *info) { int ret = 0; struct rt9466_desc *desc = info->desc; u8 evt[RT9466_IRQIDX_MAX] = {0}; rt_info("%s\n", __func__); /* mask all irq */ ret = rt9466_maskall_irq(info); if (ret < 0) { rt_debug("%s: mask all irq fail\n", __func__); goto err; } /* clear event */ ret = rt9466_i2c_block_read(info, RT9466_REG_CHG_STATC, ARRAY_SIZE(evt), evt); if (ret < 0) { rt_debug("%s: clr evt fail(%d)\n", __func__, ret); goto err; } ret = __rt9466_set_ichg(info, desc->ichg); if (ret < 0) rt_debug("%s: set ichg fail\n", __func__); ret = __rt9466_set_aicr(info, desc->aicr); if (ret < 0) rt_debug("%s: set aicr fail\n", __func__); ret = __rt9466_set_mivr(info, desc->mivr); if (ret < 0) rt_debug("%s: set mivr fail\n", __func__); ret = __rt9466_set_cv(info, desc->cv); if (ret < 0) rt_debug("%s: set cv fail\n", __func__); ret = __rt9466_set_ieoc(info, desc->ieoc); if (ret < 0) rt_debug("%s: set ieoc fail\n", __func__); ret = __rt9466_enable_te(info, desc->en_te); if (ret < 0) rt_debug("%s: set te fail\n", __func__); ret = rt9466_set_safety_timer(info, desc->safety_timer); if (ret < 0) rt_debug("%s: set fast timer fail\n", __func__); ret = __rt9466_enable_safety_timer(info, true); if (ret < 0) rt_debug("%s: enable chg timer fail\n", __func__); ret = rt9466_enable_wdt(info, desc->en_wdt); if (ret < 0) rt_debug("%s: set wdt fail\n", __func__); ret = rt9466_enable_jeita(info, desc->en_jeita); if (ret < 0) rt_debug("%s: disable jeita fail\n", __func__); ret = rt9466_enable_irq_pulse(info, desc->en_irq_pulse); if (ret < 0) rt_debug("%s: set irq pulse fail\n", __func__); /* Set ircomp according to BIF */ ret = rt9466_set_ircmp_resistor(info, desc->ircmp_resistor); if (ret < 0) rt_debug("%s: set ircmp resistor fail\n", __func__); ret = rt9466_set_ircmp_vclamp(info, desc->ircmp_vclamp); if (ret < 0) rt_debug("%s: set ircmp clamp fail\n", __func__); ret = rt9466_disable_charger_reset(info, true); if (ret < 0) rt_debug("%s: disable charger reset fail\n", __func__); ret = rt9466_sw_workaround(info); if (ret < 0) { rt_debug("%s: workaround fail\n", __func__); return ret; } /* Enable HZ mode of secondary charger */ if (strcmp(info->desc->chg_dev_name, "secondary_chg") == 0) { ret = rt9466_enable_hz(info, true); if (ret < 0) rt_debug("%s: hz sec chg fail\n", __func__); } err: return ret; } static int rt9466_plug_in(struct charger_device *chg_dev) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); rt_info("%s\n", __func__); /* Enable WDT */ if (info->desc->en_wdt) { ret = rt9466_enable_wdt(info, true); if (ret < 0) rt_debug("%s: en wdt failed\n", __func__); } /* Enable charging */ if (strcmp(info->desc->chg_dev_name, "primary_chg") == 0) { ret = rt9466_enable_charging(chg_dev, true); if (ret < 0) rt_debug("%s: en chg fail\n", __func__); } return ret; } static int rt9466_plug_out(struct charger_device *chg_dev) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); rt_info("%s\n", __func__); /* Reset AICR limit */ info->aicr_limit = -1; /* Disable charging */ ret = rt9466_enable_charging(chg_dev, false); if (ret < 0) { rt_debug("%s: disable chg fail\n", __func__); return ret; } /* Disable WDT */ ret = rt9466_enable_wdt(info, false); if (ret < 0) rt_debug("%s: disable wdt fail\n", __func__); /* enable HZ mode of secondary charger */ if (strcmp(info->desc->chg_dev_name, "secondary_chg") == 0) { ret = rt9466_enable_hz(info, true); if (ret < 0) rt_debug("%s: en hz of sec chg fail\n", __func__); } return ret; } static int rt9466_is_charging_enable(struct charger_device *chg_dev, bool *en) { struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); return __rt9466_is_charging_enable(info, en); } static int rt9466_get_min_ichg(struct charger_device *chg_dev, u32 *uA) { int ret = 0; *uA = rt9466_closest_value(RT9466_ICHG_MIN, RT9466_ICHG_MAX, RT9466_ICHG_STEP, 0); return ret; } static int rt9466_run_aicl(struct charger_device *chg_dev, u32 *uA) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = __rt9466_run_aicl(info); if (ret >= 0) *uA = info->aicr_limit; return ret; } static int rt9466_dump_register(struct charger_device *chg_dev) { int i = 0, ret = 0; u32 ichg = 0, aicr = 0, mivr = 0, ieoc = 0; bool chg_en = 0; int adc_vsys = 0, adc_vbat = 0, adc_ibat = 0, adc_ibus = 0; enum rt9466_charging_status chg_status = RT9466_CHG_STATUS_READY; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); u8 chg_stat = 0, chg_ctrl[2] = {0}; ret = rt9466_get_ichg(chg_dev, &ichg); ret = rt9466_get_aicr(chg_dev, &aicr); ret = rt9466_get_mivr(info, &mivr); ret = __rt9466_is_charging_enable(info, &chg_en); ret = rt9466_get_ieoc(info, &ieoc); ret = rt9466_get_charging_status(info, &chg_status); ret = rt9466_get_adc(info, RT9466_ADC_VSYS, &adc_vsys); ret = rt9466_get_adc(info, RT9466_ADC_VBAT, &adc_vbat); ret = rt9466_get_adc(info, RT9466_ADC_IBAT, &adc_ibat); ret = rt9466_get_adc(info, RT9466_ADC_IBUS, &adc_ibus); chg_stat = rt9466_i2c_read_byte(info, RT9466_REG_CHG_STATC); ret = rt9466_i2c_block_read(info, RT9466_REG_CHG_CTRL1, 2, chg_ctrl); /* Charging fault, dump all registers' value */ if (chg_status == RT9466_CHG_STATUS_FAULT) { for (i = 0; i < ARRAY_SIZE(rt9466_reg_addr); i++) ret = rt9466_i2c_read_byte(info, rt9466_reg_addr[i]); } rt_info("%s: ICHG = %dmA, AICR = %dmA, MIVR = %dmV, IEOC = %dmA\n", __func__, ichg / 1000, aicr / 1000, mivr / 1000, ieoc / 1000); rt_info("%s: VSYS = %dmV, VBAT = %dmV, IBAT = %dmA, IBUS = %dmA\n", __func__, adc_vsys / 1000, adc_vbat / 1000, adc_ibat / 1000, adc_ibus / 1000); rt_info("%s: CHG_EN = %d, CHG_STATUS = %s, CHG_STAT = 0x%02X\n", __func__, chg_en, rt9466_chg_status_name[chg_status], chg_stat); rt_info("%s: CHG_CTRL1 = 0x%02X, CHG_CTRL2 = 0x%02X\n", __func__, chg_ctrl[0], chg_ctrl[1]); return ret; } static int rt9466_enable_te(struct charger_device *chg_dev, bool en) { struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); return __rt9466_enable_te(info, en); } static int rt9466_reset_eoc_state(struct charger_device *chg_dev) { int ret = 0; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); /* Toggle EOC_RST */ rt9466_enable_hidden_mode(info, true); ret = rt9466_set_bit(info, RT9466_REG_CHG_HIDDEN_CTRL1, 0x80); if (ret < 0) { rt_debug("%s: set eoc rst fail\n", __func__); goto out; } ret = rt9466_clr_bit(info, RT9466_REG_CHG_HIDDEN_CTRL1, 0x80); if (ret < 0) rt_debug("%s: clr eoc rst fail\n", __func__); out: rt9466_enable_hidden_mode(info, false); return ret; } static int rt9466_do_event(struct charger_device *chg_dev, u32 event, u32 args) { switch (event) { case EVENT_EOC: charger_dev_notify(chg_dev, CHARGER_DEV_NOTIFY_EOC); break; case EVENT_RECHARGE: charger_dev_notify(chg_dev, CHARGER_DEV_NOTIFY_RECHG); break; default: break; } return 0; } static int rt9466_is_chip_enabled(struct charger_device *chg_dev, bool *en) { *en = true; return 0; } static int rt9466_safety_check(struct charger_device *chg_dev, u32 polling_ieoc) { int ret = 0; int adc_ibat = 0; static int counter; struct rt9466_info *info = dev_get_drvdata(&chg_dev->dev); ret = rt9466_get_adc(info, RT9466_ADC_IBAT, &adc_ibat); if (ret < 0) { dev_info(info->dev, "%s: get adc failed\n", __func__); return ret; } if (adc_ibat <= polling_ieoc) counter++; else counter = 0; /* If IBAT is less than polling_ieoc for 3 times, trigger EOC event */ if (counter == 3) { dev_info(info->dev, "%s: polling_ieoc = %d, ibat = %d\n", __func__, polling_ieoc, adc_ibat); charger_dev_notify(info->chg_dev, CHARGER_DEV_NOTIFY_EOC); counter = 0; } return ret; } static struct charger_ops rt9466_chg_ops = { /* Normal charging */ .plug_in = rt9466_plug_in, .plug_out = rt9466_plug_out, .dump_registers = rt9466_dump_register, .enable = rt9466_enable_charging, .is_enabled = rt9466_is_charging_enable, .get_charging_current = rt9466_get_ichg, .set_charging_current = rt9466_set_ichg, .get_input_current = rt9466_get_aicr, .set_input_current = rt9466_set_aicr, .get_constant_voltage = rt9466_get_cv, .set_constant_voltage = rt9466_set_cv, .kick_wdt = rt9466_kick_wdt, .set_mivr = rt9466_set_mivr, .is_charging_done = rt9466_is_charging_done, .get_min_charging_current = rt9466_get_min_ichg, .set_eoc_current = rt9466_set_ieoc, .enable_termination = rt9466_enable_te, .run_aicl = rt9466_run_aicl, .reset_eoc_state = rt9466_reset_eoc_state, .is_chip_enabled = rt9466_is_chip_enabled, .safety_check = rt9466_safety_check, /* Safety timer */ .enable_safety_timer = rt9466_enable_safety_timer, .is_safety_timer_enabled = rt9466_is_safety_timer_enable, /* Power path */ .enable_powerpath = rt9466_enable_power_path, .is_powerpath_enabled = rt9466_is_power_path_enable, /* OTG */ .enable_otg = rt9466_enable_otg, .set_boost_current_limit = rt9466_set_boost_current_limit, .enable_discharge = rt9466_enable_discharge, /* PE+/PE+20 */ .send_ta_current_pattern = rt9466_set_pep_current_pattern, .set_pe20_efficiency_table = rt9466_set_pep20_efficiency_table, .send_ta20_current_pattern = rt9466_set_pep20_current_pattern, /* .set_ta20_reset = rt9466_set_pep20_reset * rename function pointer in new version to reset_ta */ .reset_ta = rt9466_set_pep20_reset, .enable_cable_drop_comp = rt9466_enable_cable_drop_comp, /* ADC */ .get_tchg_adc = rt9466_get_tchg, /* Event */ .event = rt9466_do_event, }; static void rt9466_init_setting_work_handler(struct work_struct *work) { int ret = 0, retry_cnt = 0; struct rt9466_info *info = (struct rt9466_info *)container_of(work, struct rt9466_info, init_work); do { /* Select IINLMTSEL to use AICR */ ret = rt9466_select_input_current_limit(info, RT9466_IINLMTSEL_AICR); if (ret < 0) { rt_debug("%s: sel ilmtsel fail\n", __func__); retry_cnt++; } } while (retry_cnt < 5 && ret < 0); msleep(150); retry_cnt = 0; do { /* Disable hardware ILIM */ ret = rt9466_enable_ilim(info, false); if (ret < 0) { rt_debug("%s: disable ilim fail\n", __func__); retry_cnt++; } } while (retry_cnt < 5 && ret < 0); rt9466_dump_register(info->chg_dev); } static ssize_t shipping_mode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct rt9466_info *info = dev_get_drvdata(dev); int ret = 0; bool is_main_chg = strcmp(info->desc->chg_dev_name, "primary_chg") == 0 ? true : false; mutex_lock(&info->adc_access_lock); if (is_main_chg) { mutex_lock(&info->hidden_mode_lock); mutex_lock(&info->i2c_access_lock); ret = __rt9466_enable_auto_sensing(info, false); mutex_unlock(&info->hidden_mode_lock); mutex_unlock(&info->i2c_access_lock); if (ret < 0) { dev_notice(dev, "%s: disable auto sensing fail\n", __func__); goto out; } mdelay(50); } ret = rt9466_sw_reset(info); if (ret < 0) { dev_notice(dev, "%s: sw reset fail\n", __func__); goto out; } if (is_main_chg) { ret = rt9466_set_bit(info, RT9466_REG_CHG_CTRL2, RT9466_MASK_SHIP_MODE); if (ret < 0) dev_notice(dev, "%s: set shipping mode fail\n", __func__); } out: mutex_unlock(&info->adc_access_lock); return ret; } static const DEVICE_ATTR_WO(shipping_mode); /* ========================= */ /* I2C driver function */ /* ========================= */ static int rt9466_probe(struct i2c_client *client, const struct i2c_device_id *dev_id) { int ret = 0; struct rt9466_info *info = NULL; rt_info("%s(%s)\n", __func__, RT9466_DRV_VERSION); info = devm_kzalloc(&client->dev, sizeof(struct rt9466_info), GFP_KERNEL); if (!info) return -ENOMEM; mutex_init(&info->i2c_access_lock); mutex_init(&info->adc_access_lock); mutex_init(&info->irq_access_lock); mutex_init(&info->aicr_access_lock); mutex_init(&info->ichg_access_lock); mutex_init(&info->hidden_mode_lock); mutex_init(&info->pe_access_lock); mutex_init(&info->ieoc_lock); mutex_init(&info->tchg_lock); info->client = client; info->dev = &client->dev; info->aicr_limit = -1; info->hidden_mode_cnt = 0; info->ieoc_wkard = false; info->ieoc = 250000; /* register default value 250mA */ info->ichg_dis_chg = 2000000; info->tchg = 25; memcpy(info->irq_mask, rt9466_irq_maskall, RT9466_IRQIDX_MAX); /* Init wait queue head */ init_waitqueue_head(&info->wait_queue); INIT_WORK(&info->init_work, rt9466_init_setting_work_handler); /* Is HW exist */ if (!rt9466_is_hw_exist(info)) { rt_debug("%s: no rt9466 exists\n", __func__); ret = -ENODEV; goto err_no_dev; } i2c_set_clientdata(client, info); ret = rt9466_parse_dt(info, &client->dev); if (ret < 0) { rt_debug("%s: parse dt fail\n", __func__); goto err_parse_dt; } #ifdef CONFIG_RT_REGMAP ret = rt9466_register_rt_regmap(info); if (ret < 0) goto err_register_regmap; #endif ret = rt9466_reset_chip(info); if (ret < 0) { rt_debug("%s: reset chip fail\n", __func__); goto err_reset_chip; } ret = rt9466_init_setting(info); if (ret < 0) { rt_debug("%s: init setting fail\n", __func__); goto err_init_setting; } /* Register charger device */ info->chg_dev = charger_device_register( info->desc->chg_dev_name, info->dev, info, &rt9466_chg_ops, &info->chg_props); if (IS_ERR_OR_NULL(info->chg_dev)) { ret = PTR_ERR(info->chg_dev); goto err_register_chg_dev; } ret = rt9466_irq_register(info); if (ret < 0) { rt_debug("%s: irq register fail\n", __func__); goto err_irq_register; } ret = rt9466_irq_init(info); if (ret < 0) { rt_debug("%s: irq init fail\n", __func__); goto err_irq_init; } schedule_work(&info->init_work); ret = device_create_file(info->dev, &dev_attr_shipping_mode); if (ret < 0) { dev_notice(info->dev, "%s: create shipping attr fail\n", __func__); goto err_register_ls_dev; } rt_info("%s: successfully\n", __func__); return ret; err_register_ls_dev: err_irq_init: err_irq_register: charger_device_unregister(info->chg_dev); err_register_chg_dev: err_init_setting: err_reset_chip: #ifdef CONFIG_RT_REGMAP rt_regmap_device_unregister(info->regmap_dev); err_register_regmap: #endif err_parse_dt: err_no_dev: mutex_destroy(&info->i2c_access_lock); mutex_destroy(&info->adc_access_lock); mutex_destroy(&info->irq_access_lock); mutex_destroy(&info->aicr_access_lock); mutex_destroy(&info->ichg_access_lock); mutex_destroy(&info->hidden_mode_lock); mutex_destroy(&info->pe_access_lock); mutex_destroy(&info->ieoc_lock); mutex_destroy(&info->tchg_lock); return ret; } static int rt9466_remove(struct i2c_client *client) { int ret = 0; struct rt9466_info *info = i2c_get_clientdata(client); rt_info("%s\n", __func__); if (info) { #ifdef CONFIG_RT_REGMAP rt_regmap_device_unregister(info->regmap_dev); #endif device_remove_file(info->dev, &dev_attr_shipping_mode); mutex_destroy(&info->i2c_access_lock); mutex_destroy(&info->adc_access_lock); mutex_destroy(&info->irq_access_lock); mutex_destroy(&info->aicr_access_lock); mutex_destroy(&info->ichg_access_lock); mutex_destroy(&info->hidden_mode_lock); mutex_destroy(&info->pe_access_lock); mutex_destroy(&info->ieoc_lock); mutex_destroy(&info->tchg_lock); } return ret; } static void rt9466_shutdown(struct i2c_client *client) { int ret = 0; struct rt9466_info *info = i2c_get_clientdata(client); rt_info("%s\n", __func__); if (info) { ret = rt9466_sw_reset(info); if (ret < 0) rt_debug("%s: sw reset fail\n", __func__); } } static int rt9466_suspend(struct device *dev) { struct rt9466_info *info = dev_get_drvdata(dev); rt_info("%s\n", __func__); if (device_may_wakeup(dev)) enable_irq_wake(info->irq); return 0; } static int rt9466_resume(struct device *dev) { struct rt9466_info *info = dev_get_drvdata(dev); rt_info("%s\n", __func__); if (device_may_wakeup(dev)) disable_irq_wake(info->irq); return 0; } static SIMPLE_DEV_PM_OPS(rt9466_pm_ops, rt9466_suspend, rt9466_resume); static const struct i2c_device_id rt9466_i2c_id[] = { {"rt9466", 0}, {} }; MODULE_DEVICE_TABLE(i2c, rt9466_i2c_id); static const struct of_device_id rt9466_of_match[] = { { .compatible = "richtek,rt9466", }, {}, }; MODULE_DEVICE_TABLE(of, rt9466_of_match); #ifndef CONFIG_OF #define RT9466_BUSNUM 1 static struct i2c_board_info rt9466_i2c_board_info __initdata = { I2C_BOARD_INFO("rt9466", RT9466_SALVE_ADDR) }; #endif /* CONFIG_OF */ static struct i2c_driver rt9466_i2c_driver = { .driver = { .name = "rt9466", .owner = THIS_MODULE, .of_match_table = of_match_ptr(rt9466_of_match), .pm = &rt9466_pm_ops, }, .probe = rt9466_probe, .remove = rt9466_remove, .shutdown = rt9466_shutdown, .id_table = rt9466_i2c_id, }; static int __init rt9466_init(void) { int ret = 0; #ifdef CONFIG_OF rt_info("%s: with dts\n", __func__); #else rt_info("%s: without dts\n", __func__); i2c_register_board_info(RT9466_BUSNUM, &rt9466_i2c_board_info, 1); #endif ret = i2c_add_driver(&rt9466_i2c_driver); if (ret < 0) rt_debug("%s: register i2c driver fail\n", __func__); return ret; } module_init(rt9466_init); static void __exit rt9466_exit(void) { i2c_del_driver(&rt9466_i2c_driver); } module_exit(rt9466_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("ShuFanLee "); MODULE_DESCRIPTION("RT9466 Charger Driver"); MODULE_VERSION(RT9466_DRV_VERSION); /* * Release Note * 1.0.13 * (1) Revise enable_auto_sensing function, set auto sensing bit when enable it, otherwise clear it. * (2) Add shipping_mode_store node, and add adc_access_lock to avoid conflicting access with adc measurement. * (3) Add safety_check ops, trigger ieoc event, when ibat < ieoc for 3 times. * (4) Add workaround for vsys overshoot * (5) Add ichg workaround * (6) Check tchg 3 times if it >= 120 degrees * * 1.0.12 * (1) Fix type error of enable_auto_sensing in sw_reset * (2) Check HZ mode for get_tchg * (3) Add is_chip_enabled ops * * 1.0.11 * (1) Add do event interface for polling mode * (2) Enable IRQ_RZE at the end of irq handler * (3) Remove IRQ related registers from reg_addr * (4) Do ilim select in WQ and register charger class in probe * (5) Move irq_mask to info structure * * 1.0.10 * (1) Filter out not changed irq state * (2) Not to use CHG_IRQ3 * (3) Set irq to wake up system * (4) Add IEOC inaccuracy workaround * (5) Move init setting & sw workaround to work queue * (6) Add en_irq_pulse & en_jeita property in dtsi * (7) Dump ctrl1&2 in dump register * (8) Remove set ichg to 512mA in reset_pep20 * (9) Release set_ieoc/enable_te interface * (10) Disable spk mode in pep20_reest * (11) For secondary chg, enter shipping mode before shdn * (12) Workaround to keep Ichg >= 900mA * (13) Add workaround to adjust slow rate for OTG * * 1.0.9 * (1) Prevent backboot * (2) Set secondary chg to HZ in plug out callback * (3) Add CEB pin control for secondary charger * (4) After PE pattern -> Enable skip mode * Disable skip mode -> Start PE pattern * * 1.0.8 * (1) Modify init sequence for init_irq * (2) Add enable_cable_drop_com, is_charging_enabled, get_min_ichg OPS * (3) Set secondary chg to HZ if it is not in charging mode * * 1.0.7 * (1) Modify IBAT/IBUS ADC's coefficient * (2) Add interrupt-names in dts property to represent those evts that need to * be unmasked * (3) Add IRQ handlers to handle each irq event separately * (4) Use dev_xxx instead of pr_xxx * (5) Modify some naming(bat_voreg -> cv, iin_vth -> aicl_vth) and remove some * unnecessary code * * 1.0.6 * (1) Adapt to GM30 * (2) Modify irq init value * * 1.0.5 * (1) Disable all irq in irq_init * (2) Modify rt9466_is_hw_exist, check vendor id and revision id separately * * 1.0.4 * (1) Not to unmask the plug-in/out related IRQs in irq_init * PWR_RDYM/CHG_MIVRM/CHG_AICRM * VBUSOVM * TS_BAT_HOTM/TS_BAT_WARMM/TS_BAT_COOLM/TS_BAT_COLDM * CHG_OTPM/CHG_RVPM/CHG_ADPBADM/CHG_STATCM/CHG_FAULTM/TS_STATCM * IEOCM/TERMM/SSFINISHM/SSFINISHM/AICLMeasM * BST_BATUVM/PUMPX_DONEM/ADC_DONEM * * 1.0.3 * (1) Copy default dts value before parsing dts * (2) Release rt_charger_sw_reset interface * (3) Add chip revision E4 (0x84) */