// SPDX-License-Identifier: GPL-2.0-only /* * MFD core driver for Rockchip RK808/RK818 * * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd * * Author: Chris Zhong * Author: Zhang Qing * * Copyright (C) 2016 PHYTEC Messtechnik GmbH * * Author: Wadim Egorov */ #include #include #include #include #include #include #include #include struct rk808_reg_data { int addr; int mask; int value; }; static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg) { /* * Notes: * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but * we don't use that feature. It's better to cache. * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since * bits are cleared in case when we shutoff anyway, but better safe. */ switch (reg) { case RK808_SECONDS_REG ... RK808_WEEKS_REG: case RK808_RTC_STATUS_REG: case RK808_VB_MON_REG: case RK808_THERMAL_REG: case RK808_DCDC_UV_STS_REG: case RK808_LDO_UV_STS_REG: case RK808_DCDC_PG_REG: case RK808_LDO_PG_REG: case RK808_DEVCTRL_REG: case RK808_INT_STS_REG1: case RK808_INT_STS_REG2: return true; } return false; } static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg) { /* * Notes: * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but * we don't use that feature. It's better to cache. */ switch (reg) { case RK817_SECONDS_REG ... RK817_WEEKS_REG: case RK817_RTC_STATUS_REG: case RK817_CODEC_DTOP_LPT_SRST: case RK817_GAS_GAUGE_ADC_CONFIG0 ... RK817_GAS_GAUGE_CUR_ADC_K0: case RK817_PMIC_CHRG_STS: case RK817_PMIC_CHRG_OUT: case RK817_PMIC_CHRG_IN: case RK817_INT_STS_REG0: case RK817_INT_STS_REG1: case RK817_INT_STS_REG2: case RK817_SYS_STS: return true; } return false; } static const struct regmap_config rk818_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RK818_USB_CTRL_REG, .cache_type = REGCACHE_RBTREE, .volatile_reg = rk808_is_volatile_reg, }; static const struct regmap_config rk805_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RK805_OFF_SOURCE_REG, .cache_type = REGCACHE_RBTREE, .volatile_reg = rk808_is_volatile_reg, }; static const struct regmap_config rk808_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RK808_IO_POL_REG, .cache_type = REGCACHE_RBTREE, .volatile_reg = rk808_is_volatile_reg, }; static const struct regmap_config rk817_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RK817_GPIO_INT_CFG, .cache_type = REGCACHE_NONE, .volatile_reg = rk817_is_volatile_reg, }; static const struct resource rtc_resources[] = { DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM), }; static const struct resource rk817_rtc_resources[] = { DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM), }; static const struct resource rk805_key_resources[] = { DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE), DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL), }; static const struct resource rk817_pwrkey_resources[] = { DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE), DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL), }; static const struct resource rk817_charger_resources[] = { DEFINE_RES_IRQ(RK817_IRQ_PLUG_IN), DEFINE_RES_IRQ(RK817_IRQ_PLUG_OUT), }; static const struct mfd_cell rk805s[] = { { .name = "rk808-clkout", }, { .name = "rk808-regulator", }, { .name = "rk805-pinctrl", }, { .name = "rk808-rtc", .num_resources = ARRAY_SIZE(rtc_resources), .resources = &rtc_resources[0], }, { .name = "rk805-pwrkey", .num_resources = ARRAY_SIZE(rk805_key_resources), .resources = &rk805_key_resources[0], }, }; static const struct mfd_cell rk808s[] = { { .name = "rk808-clkout", }, { .name = "rk808-regulator", }, { .name = "rk808-rtc", .num_resources = ARRAY_SIZE(rtc_resources), .resources = rtc_resources, }, }; static const struct mfd_cell rk817s[] = { { .name = "rk808-clkout",}, { .name = "rk808-regulator",}, { .name = "rk805-pwrkey", .num_resources = ARRAY_SIZE(rk817_pwrkey_resources), .resources = &rk817_pwrkey_resources[0], }, { .name = "rk808-rtc", .num_resources = ARRAY_SIZE(rk817_rtc_resources), .resources = &rk817_rtc_resources[0], }, { .name = "rk817-codec",}, { .name = "rk817-charger", .num_resources = ARRAY_SIZE(rk817_charger_resources), .resources = &rk817_charger_resources[0], }, }; static const struct mfd_cell rk818s[] = { { .name = "rk808-clkout", }, { .name = "rk808-regulator", }, { .name = "rk808-rtc", .num_resources = ARRAY_SIZE(rtc_resources), .resources = rtc_resources, }, }; static const struct rk808_reg_data rk805_pre_init_reg[] = { {RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK, RK805_BUCK1_2_ILMAX_4000MA}, {RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK, RK805_BUCK1_2_ILMAX_4000MA}, {RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK, RK805_BUCK3_ILMAX_3000MA}, {RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK, RK805_BUCK4_ILMAX_3500MA}, {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA}, {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C}, }; static const struct rk808_reg_data rk808_pre_init_reg[] = { { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA }, { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA }, { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA }, { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA }, { RK808_DCDC_UV_ACT_REG, BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE}, { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, }; static const struct rk808_reg_data rk817_pre_init_reg[] = { {RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, /* Codec specific registers */ { RK817_CODEC_DTOP_VUCTL, MASK_ALL, 0x03 }, { RK817_CODEC_DTOP_VUCTIME, MASK_ALL, 0x00 }, { RK817_CODEC_DTOP_LPT_SRST, MASK_ALL, 0x00 }, { RK817_CODEC_DTOP_DIGEN_CLKE, MASK_ALL, 0x00 }, /* from vendor driver, CODEC_AREF_RTCFG0 not defined in data sheet */ { RK817_CODEC_AREF_RTCFG0, MASK_ALL, 0x00 }, { RK817_CODEC_AREF_RTCFG1, MASK_ALL, 0x06 }, { RK817_CODEC_AADC_CFG0, MASK_ALL, 0xc8 }, /* from vendor driver, CODEC_AADC_CFG1 not defined in data sheet */ { RK817_CODEC_AADC_CFG1, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_VOLL, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_VOLR, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_SR_ACL0, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_ALC1, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_ALC2, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_NG, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_HPF, MASK_ALL, 0x00 }, { RK817_CODEC_DADC_RVOLL, MASK_ALL, 0xff }, { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff }, { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 }, { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 }, { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 }, /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */ { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 }, { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 }, { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 }, { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 }, { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff }, { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff }, { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 }, { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 }, { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 }, { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 }, /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */ { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 }, { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 }, { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 }, { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 }, { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 }, { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff }, { RK817_CODEC_DDAC_RVOLR, MASK_ALL, 0xff }, { RK817_CODEC_AHP_ANTI0, MASK_ALL, 0x00 }, { RK817_CODEC_AHP_ANTI1, MASK_ALL, 0x00 }, { RK817_CODEC_AHP_CFG0, MASK_ALL, 0xe0 }, { RK817_CODEC_AHP_CFG1, MASK_ALL, 0x1f }, { RK817_CODEC_AHP_CP, MASK_ALL, 0x09 }, { RK817_CODEC_ACLASSD_CFG1, MASK_ALL, 0x69 }, { RK817_CODEC_ACLASSD_CFG2, MASK_ALL, 0x44 }, { RK817_CODEC_APLL_CFG0, MASK_ALL, 0x04 }, { RK817_CODEC_APLL_CFG1, MASK_ALL, 0x00 }, { RK817_CODEC_APLL_CFG2, MASK_ALL, 0x30 }, { RK817_CODEC_APLL_CFG3, MASK_ALL, 0x19 }, { RK817_CODEC_APLL_CFG4, MASK_ALL, 0x65 }, { RK817_CODEC_APLL_CFG5, MASK_ALL, 0x01 }, { RK817_CODEC_DI2S_CKM, MASK_ALL, 0x01 }, { RK817_CODEC_DI2S_RSD, MASK_ALL, 0x00 }, { RK817_CODEC_DI2S_RXCR1, MASK_ALL, 0x00 }, { RK817_CODEC_DI2S_RXCR2, MASK_ALL, 0x17 }, { RK817_CODEC_DI2S_RXCMD_TSD, MASK_ALL, 0x00 }, { RK817_CODEC_DI2S_TXCR1, MASK_ALL, 0x00 }, { RK817_CODEC_DI2S_TXCR2, MASK_ALL, 0x17 }, { RK817_CODEC_DI2S_TXCR3_TXCMD, MASK_ALL, 0x00 }, {RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_L}, {RK817_SYS_CFG(1), RK817_HOTDIE_TEMP_MSK | RK817_TSD_TEMP_MSK, RK817_HOTDIE_105 | RK817_TSD_140}, }; static const struct rk808_reg_data rk818_pre_init_reg[] = { /* improve efficiency */ { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA }, { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA }, { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, { RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK, RK818_USB_ILMIN_2000MA }, /* close charger when usb lower then 3.4V */ { RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK, (0x7 << 4) }, /* no action when vref */ { RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL }, /* enable HDMI 5V */ { RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN }, { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, }; static const struct regmap_irq rk805_irqs[] = { [RK805_IRQ_PWRON_RISE] = { .mask = RK805_IRQ_PWRON_RISE_MSK, .reg_offset = 0, }, [RK805_IRQ_VB_LOW] = { .mask = RK805_IRQ_VB_LOW_MSK, .reg_offset = 0, }, [RK805_IRQ_PWRON] = { .mask = RK805_IRQ_PWRON_MSK, .reg_offset = 0, }, [RK805_IRQ_PWRON_LP] = { .mask = RK805_IRQ_PWRON_LP_MSK, .reg_offset = 0, }, [RK805_IRQ_HOTDIE] = { .mask = RK805_IRQ_HOTDIE_MSK, .reg_offset = 0, }, [RK805_IRQ_RTC_ALARM] = { .mask = RK805_IRQ_RTC_ALARM_MSK, .reg_offset = 0, }, [RK805_IRQ_RTC_PERIOD] = { .mask = RK805_IRQ_RTC_PERIOD_MSK, .reg_offset = 0, }, [RK805_IRQ_PWRON_FALL] = { .mask = RK805_IRQ_PWRON_FALL_MSK, .reg_offset = 0, }, }; static const struct regmap_irq rk808_irqs[] = { /* INT_STS */ [RK808_IRQ_VOUT_LO] = { .mask = RK808_IRQ_VOUT_LO_MSK, .reg_offset = 0, }, [RK808_IRQ_VB_LO] = { .mask = RK808_IRQ_VB_LO_MSK, .reg_offset = 0, }, [RK808_IRQ_PWRON] = { .mask = RK808_IRQ_PWRON_MSK, .reg_offset = 0, }, [RK808_IRQ_PWRON_LP] = { .mask = RK808_IRQ_PWRON_LP_MSK, .reg_offset = 0, }, [RK808_IRQ_HOTDIE] = { .mask = RK808_IRQ_HOTDIE_MSK, .reg_offset = 0, }, [RK808_IRQ_RTC_ALARM] = { .mask = RK808_IRQ_RTC_ALARM_MSK, .reg_offset = 0, }, [RK808_IRQ_RTC_PERIOD] = { .mask = RK808_IRQ_RTC_PERIOD_MSK, .reg_offset = 0, }, /* INT_STS2 */ [RK808_IRQ_PLUG_IN_INT] = { .mask = RK808_IRQ_PLUG_IN_INT_MSK, .reg_offset = 1, }, [RK808_IRQ_PLUG_OUT_INT] = { .mask = RK808_IRQ_PLUG_OUT_INT_MSK, .reg_offset = 1, }, }; static const struct regmap_irq rk818_irqs[] = { /* INT_STS */ [RK818_IRQ_VOUT_LO] = { .mask = RK818_IRQ_VOUT_LO_MSK, .reg_offset = 0, }, [RK818_IRQ_VB_LO] = { .mask = RK818_IRQ_VB_LO_MSK, .reg_offset = 0, }, [RK818_IRQ_PWRON] = { .mask = RK818_IRQ_PWRON_MSK, .reg_offset = 0, }, [RK818_IRQ_PWRON_LP] = { .mask = RK818_IRQ_PWRON_LP_MSK, .reg_offset = 0, }, [RK818_IRQ_HOTDIE] = { .mask = RK818_IRQ_HOTDIE_MSK, .reg_offset = 0, }, [RK818_IRQ_RTC_ALARM] = { .mask = RK818_IRQ_RTC_ALARM_MSK, .reg_offset = 0, }, [RK818_IRQ_RTC_PERIOD] = { .mask = RK818_IRQ_RTC_PERIOD_MSK, .reg_offset = 0, }, [RK818_IRQ_USB_OV] = { .mask = RK818_IRQ_USB_OV_MSK, .reg_offset = 0, }, /* INT_STS2 */ [RK818_IRQ_PLUG_IN] = { .mask = RK818_IRQ_PLUG_IN_MSK, .reg_offset = 1, }, [RK818_IRQ_PLUG_OUT] = { .mask = RK818_IRQ_PLUG_OUT_MSK, .reg_offset = 1, }, [RK818_IRQ_CHG_OK] = { .mask = RK818_IRQ_CHG_OK_MSK, .reg_offset = 1, }, [RK818_IRQ_CHG_TE] = { .mask = RK818_IRQ_CHG_TE_MSK, .reg_offset = 1, }, [RK818_IRQ_CHG_TS1] = { .mask = RK818_IRQ_CHG_TS1_MSK, .reg_offset = 1, }, [RK818_IRQ_TS2] = { .mask = RK818_IRQ_TS2_MSK, .reg_offset = 1, }, [RK818_IRQ_CHG_CVTLIM] = { .mask = RK818_IRQ_CHG_CVTLIM_MSK, .reg_offset = 1, }, [RK818_IRQ_DISCHG_ILIM] = { .mask = RK818_IRQ_DISCHG_ILIM_MSK, .reg_offset = 1, }, }; static const struct regmap_irq rk817_irqs[RK817_IRQ_END] = { REGMAP_IRQ_REG_LINE(0, 8), REGMAP_IRQ_REG_LINE(1, 8), REGMAP_IRQ_REG_LINE(2, 8), REGMAP_IRQ_REG_LINE(3, 8), REGMAP_IRQ_REG_LINE(4, 8), REGMAP_IRQ_REG_LINE(5, 8), REGMAP_IRQ_REG_LINE(6, 8), REGMAP_IRQ_REG_LINE(7, 8), REGMAP_IRQ_REG_LINE(8, 8), REGMAP_IRQ_REG_LINE(9, 8), REGMAP_IRQ_REG_LINE(10, 8), REGMAP_IRQ_REG_LINE(11, 8), REGMAP_IRQ_REG_LINE(12, 8), REGMAP_IRQ_REG_LINE(13, 8), REGMAP_IRQ_REG_LINE(14, 8), REGMAP_IRQ_REG_LINE(15, 8), REGMAP_IRQ_REG_LINE(16, 8), REGMAP_IRQ_REG_LINE(17, 8), REGMAP_IRQ_REG_LINE(18, 8), REGMAP_IRQ_REG_LINE(19, 8), REGMAP_IRQ_REG_LINE(20, 8), REGMAP_IRQ_REG_LINE(21, 8), REGMAP_IRQ_REG_LINE(22, 8), REGMAP_IRQ_REG_LINE(23, 8) }; static struct regmap_irq_chip rk805_irq_chip = { .name = "rk805", .irqs = rk805_irqs, .num_irqs = ARRAY_SIZE(rk805_irqs), .num_regs = 1, .status_base = RK805_INT_STS_REG, .mask_base = RK805_INT_STS_MSK_REG, .ack_base = RK805_INT_STS_REG, .init_ack_masked = true, }; static const struct regmap_irq_chip rk808_irq_chip = { .name = "rk808", .irqs = rk808_irqs, .num_irqs = ARRAY_SIZE(rk808_irqs), .num_regs = 2, .irq_reg_stride = 2, .status_base = RK808_INT_STS_REG1, .mask_base = RK808_INT_STS_MSK_REG1, .ack_base = RK808_INT_STS_REG1, .init_ack_masked = true, }; static struct regmap_irq_chip rk817_irq_chip = { .name = "rk817", .irqs = rk817_irqs, .num_irqs = ARRAY_SIZE(rk817_irqs), .num_regs = 3, .irq_reg_stride = 2, .status_base = RK817_INT_STS_REG0, .mask_base = RK817_INT_STS_MSK_REG0, .ack_base = RK817_INT_STS_REG0, .init_ack_masked = true, }; static const struct regmap_irq_chip rk818_irq_chip = { .name = "rk818", .irqs = rk818_irqs, .num_irqs = ARRAY_SIZE(rk818_irqs), .num_regs = 2, .irq_reg_stride = 2, .status_base = RK818_INT_STS_REG1, .mask_base = RK818_INT_STS_MSK_REG1, .ack_base = RK818_INT_STS_REG1, .init_ack_masked = true, }; static struct i2c_client *rk808_i2c_client; static void rk808_pm_power_off(void) { int ret; unsigned int reg, bit; struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); switch (rk808->variant) { case RK805_ID: reg = RK805_DEV_CTRL_REG; bit = DEV_OFF; break; case RK808_ID: reg = RK808_DEVCTRL_REG, bit = DEV_OFF_RST; break; case RK809_ID: case RK817_ID: reg = RK817_SYS_CFG(3); bit = DEV_OFF; break; case RK818_ID: reg = RK818_DEVCTRL_REG; bit = DEV_OFF; break; default: return; } ret = regmap_update_bits(rk808->regmap, reg, bit, bit); if (ret) dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n"); } static int rk808_restart_notify(struct notifier_block *this, unsigned long mode, void *cmd) { struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); unsigned int reg, bit; int ret; switch (rk808->variant) { case RK809_ID: case RK817_ID: reg = RK817_SYS_CFG(3); bit = DEV_RST; break; default: return NOTIFY_DONE; } ret = regmap_update_bits(rk808->regmap, reg, bit, bit); if (ret) dev_err(&rk808_i2c_client->dev, "Failed to restart device!\n"); return NOTIFY_DONE; } static struct notifier_block rk808_restart_handler = { .notifier_call = rk808_restart_notify, .priority = 192, }; static void rk8xx_shutdown(struct i2c_client *client) { struct rk808 *rk808 = i2c_get_clientdata(client); int ret; switch (rk808->variant) { case RK805_ID: ret = regmap_update_bits(rk808->regmap, RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SHUTDOWN_FUN); break; case RK809_ID: case RK817_ID: ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_DN_FUN); break; default: return; } if (ret) dev_warn(&client->dev, "Cannot switch to power down function\n"); } static const struct of_device_id rk808_of_match[] = { { .compatible = "rockchip,rk805" }, { .compatible = "rockchip,rk808" }, { .compatible = "rockchip,rk809" }, { .compatible = "rockchip,rk817" }, { .compatible = "rockchip,rk818" }, { }, }; MODULE_DEVICE_TABLE(of, rk808_of_match); static int rk808_probe(struct i2c_client *client) { struct device_node *np = client->dev.of_node; struct rk808 *rk808; const struct rk808_reg_data *pre_init_reg; const struct mfd_cell *cells; int nr_pre_init_regs; int nr_cells; int msb, lsb; unsigned char pmic_id_msb, pmic_id_lsb; int ret; int i; rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL); if (!rk808) return -ENOMEM; if (of_device_is_compatible(np, "rockchip,rk817") || of_device_is_compatible(np, "rockchip,rk809")) { pmic_id_msb = RK817_ID_MSB; pmic_id_lsb = RK817_ID_LSB; } else { pmic_id_msb = RK808_ID_MSB; pmic_id_lsb = RK808_ID_LSB; } /* Read chip variant */ msb = i2c_smbus_read_byte_data(client, pmic_id_msb); if (msb < 0) { dev_err(&client->dev, "failed to read the chip id at 0x%x\n", RK808_ID_MSB); return msb; } lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb); if (lsb < 0) { dev_err(&client->dev, "failed to read the chip id at 0x%x\n", RK808_ID_LSB); return lsb; } rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK; dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant); switch (rk808->variant) { case RK805_ID: rk808->regmap_cfg = &rk805_regmap_config; rk808->regmap_irq_chip = &rk805_irq_chip; pre_init_reg = rk805_pre_init_reg; nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg); cells = rk805s; nr_cells = ARRAY_SIZE(rk805s); break; case RK808_ID: rk808->regmap_cfg = &rk808_regmap_config; rk808->regmap_irq_chip = &rk808_irq_chip; pre_init_reg = rk808_pre_init_reg; nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg); cells = rk808s; nr_cells = ARRAY_SIZE(rk808s); break; case RK818_ID: rk808->regmap_cfg = &rk818_regmap_config; rk808->regmap_irq_chip = &rk818_irq_chip; pre_init_reg = rk818_pre_init_reg; nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg); cells = rk818s; nr_cells = ARRAY_SIZE(rk818s); break; case RK809_ID: case RK817_ID: rk808->regmap_cfg = &rk817_regmap_config; rk808->regmap_irq_chip = &rk817_irq_chip; pre_init_reg = rk817_pre_init_reg; nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg); cells = rk817s; nr_cells = ARRAY_SIZE(rk817s); break; default: dev_err(&client->dev, "Unsupported RK8XX ID %lu\n", rk808->variant); return -EINVAL; } rk808->i2c = client; i2c_set_clientdata(client, rk808); rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg); if (IS_ERR(rk808->regmap)) { dev_err(&client->dev, "regmap initialization failed\n"); return PTR_ERR(rk808->regmap); } if (!client->irq) { dev_err(&client->dev, "No interrupt support, no core IRQ\n"); return -EINVAL; } ret = regmap_add_irq_chip(rk808->regmap, client->irq, IRQF_ONESHOT, -1, rk808->regmap_irq_chip, &rk808->irq_data); if (ret) { dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); return ret; } for (i = 0; i < nr_pre_init_regs; i++) { ret = regmap_update_bits(rk808->regmap, pre_init_reg[i].addr, pre_init_reg[i].mask, pre_init_reg[i].value); if (ret) { dev_err(&client->dev, "0x%x write err\n", pre_init_reg[i].addr); return ret; } } ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE, cells, nr_cells, NULL, 0, regmap_irq_get_domain(rk808->irq_data)); if (ret) { dev_err(&client->dev, "failed to add MFD devices %d\n", ret); goto err_irq; } if (of_property_read_bool(np, "rockchip,system-power-controller")) { rk808_i2c_client = client; pm_power_off = rk808_pm_power_off; switch (rk808->variant) { case RK809_ID: case RK817_ID: ret = register_restart_handler(&rk808_restart_handler); if (ret) dev_warn(&client->dev, "failed to register rst handler, %d\n", ret); break; default: dev_dbg(&client->dev, "pmic controlled board reset not supported\n"); break; } } return 0; err_irq: regmap_del_irq_chip(client->irq, rk808->irq_data); return ret; } static void rk808_remove(struct i2c_client *client) { struct rk808 *rk808 = i2c_get_clientdata(client); regmap_del_irq_chip(client->irq, rk808->irq_data); /** * pm_power_off may points to a function from another module. * Check if the pointer is set by us and only then overwrite it. */ if (pm_power_off == rk808_pm_power_off) pm_power_off = NULL; unregister_restart_handler(&rk808_restart_handler); } static int __maybe_unused rk8xx_suspend(struct device *dev) { struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev)); int ret = 0; switch (rk808->variant) { case RK805_ID: ret = regmap_update_bits(rk808->regmap, RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN); break; case RK809_ID: case RK817_ID: ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_SLP_FUN); break; default: break; } return ret; } static int __maybe_unused rk8xx_resume(struct device *dev) { struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev)); int ret = 0; switch (rk808->variant) { case RK809_ID: case RK817_ID: ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_NULL_FUN); break; default: break; } return ret; } static SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume); static struct i2c_driver rk808_i2c_driver = { .driver = { .name = "rk808", .of_match_table = rk808_of_match, .pm = &rk8xx_pm_ops, }, .probe_new = rk808_probe, .remove = rk808_remove, .shutdown = rk8xx_shutdown, }; module_i2c_driver(rk808_i2c_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Chris Zhong "); MODULE_AUTHOR("Zhang Qing "); MODULE_AUTHOR("Wadim Egorov "); MODULE_DESCRIPTION("RK808/RK818 PMIC driver");