// SPDX-License-Identifier: GPL-2.0-only /* * MFD core driver for Rockchip RK808/RK818 * * Copyright (c) 2014-2018, 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 #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_ADC_CONFIG0 ... RK817_CURE_ADC_K0: case RK817_CHRG_STS: case RK817_CHRG_OUT: case RK817_CHRG_IN: case RK817_SYS_STS: case RK817_INT_STS_REG0: case RK817_INT_STS_REG1: case RK817_INT_STS_REG2: return true; } return false; } static bool rk818_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_EN_REG: case RK808_LDO_EN_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: case RK808_INT_STS_MSK_REG1: case RK808_INT_STS_MSK_REG2: case RK816_INT_STS_REG1: case RK816_INT_STS_MSK_REG1: case RK818_SUP_STS_REG ... RK818_SAVE_DATA19: return true; } return false; } static const struct regmap_config rk818_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RK818_SAVE_DATA19, .cache_type = REGCACHE_RBTREE, .volatile_reg = rk818_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 rk816_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RK816_DATA18_REG, .cache_type = REGCACHE_RBTREE, .volatile_reg = rk818_is_volatile_reg, }; static const struct regmap_config rk817_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = RK817_GPIO_INT_CFG, .num_reg_defaults_raw = RK817_GPIO_INT_CFG + 1, .cache_type = REGCACHE_RBTREE, .volatile_reg = rk817_is_volatile_reg, }; static struct resource rtc_resources[] = { DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM), }; static struct resource rk816_rtc_resources[] = { DEFINE_RES_IRQ(RK816_IRQ_RTC_ALARM), }; static struct resource rk817_rtc_resources[] = { DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM), }; static struct resource rk805_key_resources[] = { DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL), DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE), }; static struct resource rk816_pwrkey_resources[] = { DEFINE_RES_IRQ(RK816_IRQ_PWRON_FALL), DEFINE_RES_IRQ(RK816_IRQ_PWRON_RISE), }; static struct resource rk817_pwrkey_resources[] = { DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL), DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE), }; 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 rk816s[] = { { .name = "rk808-clkout", }, { .name = "rk808-regulator", }, { .name = "rk805-pinctrl", }, { .name = "rk816-battery", .of_compatible = "rk816-battery", }, { .name = "rk805-pwrkey", .num_resources = ARRAY_SIZE(rk816_pwrkey_resources), .resources = &rk816_pwrkey_resources[0], }, { .name = "rk808-rtc", .num_resources = ARRAY_SIZE(rk816_rtc_resources), .resources = &rk816_rtc_resources[0], }, }; static const struct mfd_cell rk817s[] = { { .name = "rk808-clkout",}, { .name = "rk808-regulator",}, { .name = "rk817-battery", .of_compatible = "rk817,battery", }, { .name = "rk817-charger", .of_compatible = "rk817,charger", }, { .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", .of_compatible = "rockchip,rk817-codec", }, }; static const struct mfd_cell rk818s[] = { { .name = "rk808-clkout", }, { .name = "rk808-regulator", }, { .name = "rk818-battery", .of_compatible = "rk818-battery", }, { .name = "rk818-charger", }, { .name = "rk808-rtc", .num_resources = ARRAY_SIZE(rtc_resources), .resources = rtc_resources, }, }; static const struct rk808_reg_data rk805_pre_init_reg[] = { {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA}, {RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN}, {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C}, {RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, }; static struct rk808_reg_data rk805_suspend_reg[] = { {RK805_BUCK3_CONFIG_REG, PWM_MODE_MSK, AUTO_PWM_MODE}, }; static struct rk808_reg_data rk805_resume_reg[] = { {RK805_BUCK3_CONFIG_REG, PWM_MODE_MSK, FPWM_MODE}, }; 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_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, }; static const struct rk808_reg_data rk816_pre_init_reg[] = { /* buck4 Max ILMIT*/ { RK816_BUCK4_CONFIG_REG, REG_WRITE_MSK, BUCK4_MAX_ILIMIT }, /* hotdie temperature: 105c*/ { RK816_THERMAL_REG, REG_WRITE_MSK, TEMP105C }, /* set buck 12.5mv/us */ { RK816_BUCK1_CONFIG_REG, BUCK_RATE_MSK, BUCK_RATE_12_5MV_US }, { RK816_BUCK2_CONFIG_REG, BUCK_RATE_MSK, BUCK_RATE_12_5MV_US }, /* enable RTC_PERIOD & RTC_ALARM int */ { RK816_INT_STS_MSK_REG2, REG_WRITE_MSK, RTC_PERIOD_ALARM_INT_EN }, /* set bat 3.0 low and act shutdown */ { RK816_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK816_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN }, /* enable PWRON rising/faling int */ { RK816_INT_STS_MSK_REG1, REG_WRITE_MSK, RK816_PWRON_FALL_RISE_INT_EN }, /* enable PLUG IN/OUT int */ { RK816_INT_STS_MSK_REG3, REG_WRITE_MSK, PLUGIN_OUT_INT_EN }, /* clear int flags */ { RK816_INT_STS_REG1, REG_WRITE_MSK, ALL_INT_FLAGS_ST }, { RK816_INT_STS_REG2, REG_WRITE_MSK, ALL_INT_FLAGS_ST }, { RK816_INT_STS_REG3, REG_WRITE_MSK, ALL_INT_FLAGS_ST }, { RK816_DCDC_EN_REG2, BOOST_EN_MASK, BOOST_DISABLE }, /* set write mask bit 1, otherwise 'is_enabled()' get wrong status */ { RK816_LDO_EN_REG1, REGS_WMSK, REGS_WMSK }, { RK816_LDO_EN_REG2, REGS_WMSK, REGS_WMSK }, }; static const struct rk808_reg_data rk817_pre_init_reg[] = { {RK817_SYS_CFG(3), RK817_SLPPOL_MSK, RK817_SLPPOL_L}, {RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, {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_RTC_CTRL_REG, RTC_STOP, RTC_STOP}, { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | VB_LO_SEL_3500MV }, {RK808_CLK32OUT_REG, CLK32KOUT2_FUNC_MASK, CLK32KOUT2_FUNC}, }; 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 struct rk808_reg_data rk816_suspend_reg[] = { /* set bat 3.4v low and act irq */ { RK816_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK816_VBAT_LOW_3V4 | EN_VBAT_LOW_IRQ }, }; static struct rk808_reg_data rk816_resume_reg[] = { /* set bat 3.0v low and act shutdown */ { RK816_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK816_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN }, }; static const struct regmap_irq rk816_irqs[] = { /* INT_STS */ [RK816_IRQ_PWRON_FALL] = { .mask = RK816_IRQ_PWRON_FALL_MSK, .reg_offset = 0, }, [RK816_IRQ_PWRON_RISE] = { .mask = RK816_IRQ_PWRON_RISE_MSK, .reg_offset = 0, }, [RK816_IRQ_VB_LOW] = { .mask = RK816_IRQ_VB_LOW_MSK, .reg_offset = 1, }, [RK816_IRQ_PWRON] = { .mask = RK816_IRQ_PWRON_MSK, .reg_offset = 1, }, [RK816_IRQ_PWRON_LP] = { .mask = RK816_IRQ_PWRON_LP_MSK, .reg_offset = 1, }, [RK816_IRQ_HOTDIE] = { .mask = RK816_IRQ_HOTDIE_MSK, .reg_offset = 1, }, [RK816_IRQ_RTC_ALARM] = { .mask = RK816_IRQ_RTC_ALARM_MSK, .reg_offset = 1, }, [RK816_IRQ_RTC_PERIOD] = { .mask = RK816_IRQ_RTC_PERIOD_MSK, .reg_offset = 1, }, [RK816_IRQ_USB_OV] = { .mask = RK816_IRQ_USB_OV_MSK, .reg_offset = 1, }, }; static struct rk808_reg_data rk818_suspend_reg[] = { /* set bat 3.4v low and act irq */ { RK808_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK808_VBAT_LOW_3V4 | EN_VBAT_LOW_IRQ }, }; static struct rk808_reg_data rk818_resume_reg[] = { /* set bat 3.0v low and act shutdown */ { RK808_VB_MON_REG, VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK, RK808_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN }, }; 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 const struct regmap_irq rk816_battery_irqs[] = { /* INT_STS */ [RK816_IRQ_PLUG_IN] = { .mask = RK816_IRQ_PLUG_IN_MSK, .reg_offset = 0, }, [RK816_IRQ_PLUG_OUT] = { .mask = RK816_IRQ_PLUG_OUT_MSK, .reg_offset = 0, }, [RK816_IRQ_CHG_OK] = { .mask = RK816_IRQ_CHG_OK_MSK, .reg_offset = 0, }, [RK816_IRQ_CHG_TE] = { .mask = RK816_IRQ_CHG_TE_MSK, .reg_offset = 0, }, [RK816_IRQ_CHG_TS] = { .mask = RK816_IRQ_CHG_TS_MSK, .reg_offset = 0, }, [RK816_IRQ_CHG_CVTLIM] = { .mask = RK816_IRQ_CHG_CVTLIM_MSK, .reg_offset = 0, }, [RK816_IRQ_DISCHG_ILIM] = { .mask = RK816_IRQ_DISCHG_ILIM_MSK, .reg_offset = 0, }, }; static struct regmap_irq_chip rk816_irq_chip = { .name = "rk816", .irqs = rk816_irqs, .num_irqs = ARRAY_SIZE(rk816_irqs), .num_regs = 2, .irq_reg_stride = 3, .status_base = RK816_INT_STS_REG1, .mask_base = RK816_INT_STS_MSK_REG1, .ack_base = RK816_INT_STS_REG1, .init_ack_masked = true, }; static struct regmap_irq_chip rk816_battery_irq_chip = { .name = "rk816_battery", .irqs = rk816_battery_irqs, .num_irqs = ARRAY_SIZE(rk816_battery_irqs), .num_regs = 1, .status_base = RK816_INT_STS_REG3, .mask_base = RK816_INT_STS_MSK_REG3, .ack_base = RK816_INT_STS_REG3, .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 struct rk808_reg_data *suspend_reg, *resume_reg; static int suspend_reg_num, resume_reg_num; static void rk805_device_shutdown_prepare(void) { int ret; struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); if (!rk808) return; ret = regmap_update_bits(rk808->regmap, RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SHUTDOWN_FUN); if (ret) dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n"); } static void rk817_shutdown_prepare(void) { int ret; struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); /* close rtc int when power off */ regmap_update_bits(rk808->regmap, RK817_INT_STS_MSK_REG0, (0x3 << 5), (0x3 << 5)); regmap_update_bits(rk808->regmap, RK817_RTC_INT_REG, (0x3 << 2), (0x0 << 2)); if (rk808->pins && rk808->pins->p && rk808->pins->power_off) { ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_NULL_FUN); if (ret) pr_err("shutdown: config SLPPIN_NULL_FUN error!\n"); ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPOL_MSK, RK817_SLPPOL_H); if (ret) pr_err("shutdown: config RK817_SLPPOL_H error!\n"); ret = pinctrl_select_state(rk808->pins->p, rk808->pins->power_off); if (ret) pr_info("%s:failed to activate pwroff state\n", __func__); } /* pmic sleep shutdown function */ ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_DN_FUN); if (ret) dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n"); /* pmic need the SCL clock to synchronize register */ mdelay(2); } static void rk8xx_device_shutdown(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 RK816_ID: reg = RK816_DEV_CTRL_REG; 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"); } /* Called in syscore shutdown */ static void (*pm_shutdown)(void); static void rk8xx_syscore_shutdown(void) { int ret; struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); if (!rk808) { dev_warn(&rk808_i2c_client->dev, "have no rk808, so do nothing here\n"); return; } /* close rtc int when power off */ regmap_update_bits(rk808->regmap, RK808_INT_STS_MSK_REG1, (0x3 << 5), (0x3 << 5)); regmap_update_bits(rk808->regmap, RK808_RTC_INT_REG, (0x3 << 2), (0x0 << 2)); /* * For PMIC that power off supplies by write register via i2c bus, * it's better to do power off at syscore shutdown here. * * Because when run to kernel's "pm_power_off" call, i2c may has * been stopped or PMIC may not be able to get i2c transfer while * there are too many devices are competiting. */ if (system_state == SYSTEM_POWER_OFF) { if (rk808->variant == RK809_ID || rk808->variant == RK817_ID) { ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_DN_FUN); if (ret) { dev_warn(&rk808_i2c_client->dev, "Cannot switch to power down function\n"); } } if (pm_shutdown) { dev_info(&rk808_i2c_client->dev, "System power off\n"); pm_shutdown(); mdelay(10); dev_info(&rk808_i2c_client->dev, "Power off failed !\n"); while (1) ; } } } static struct syscore_ops rk808_syscore_ops = { .shutdown = rk8xx_syscore_shutdown, }; /* * RK8xx PMICs would do real power off in syscore shutdown, if "pm_power_off" * is not assigned(e.g. PSCI is not enabled), we have to provide a dummy * callback for it, otherwise there comes a halt in Reboot system call: * * if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !pm_power_off) * cmd = LINUX_REBOOT_CMD_HALT; */ static void rk808_pm_power_off_dummy(void) { pr_info("Dummy power off for RK8xx PMICs, should never reach here!\n"); while (1) ; } static ssize_t rk8xx_dbg_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int ret; char cmd; u32 input[2], addr, data; struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); ret = sscanf(buf, "%c ", &cmd); if (ret != 1) { pr_err("Unknown command\n"); goto out; } switch (cmd) { case 'w': ret = sscanf(buf, "%c %x %x ", &cmd, &input[0], &input[1]); if (ret != 3) { pr_err("error! cmd format: echo w [addr] [value]\n"); goto out; }; addr = input[0] & 0xff; data = input[1] & 0xff; pr_info("cmd : %c %x %x\n\n", cmd, input[0], input[1]); regmap_write(rk808->regmap, addr, data); regmap_read(rk808->regmap, addr, &data); pr_info("new: %x %x\n", addr, data); break; case 'r': ret = sscanf(buf, "%c %x ", &cmd, &input[0]); if (ret != 2) { pr_err("error! cmd format: echo r [addr]\n"); goto out; }; pr_info("cmd : %c %x\n\n", cmd, input[0]); addr = input[0] & 0xff; regmap_read(rk808->regmap, addr, &data); pr_info("%x %x\n", input[0], data); break; default: pr_err("Unknown command\n"); break; } out: return count; } static int rk817_pinctrl_init(struct device *dev, struct rk808 *rk808) { int ret; struct platform_device *pinctrl_dev; struct pinctrl_state *default_st; pinctrl_dev = platform_device_alloc("rk805-pinctrl", -1); if (!pinctrl_dev) { dev_err(dev, "Alloc pinctrl dev failed!\n"); return -ENOMEM; } pinctrl_dev->dev.parent = dev; ret = platform_device_add(pinctrl_dev); if (ret) { platform_device_put(pinctrl_dev); dev_err(dev, "Add rk805-pinctrl dev failed!\n"); return ret; } if (dev->pins && !IS_ERR(dev->pins->p)) { dev_info(dev, "had get a pinctrl!\n"); return 0; } rk808->pins = devm_kzalloc(dev, sizeof(struct rk808_pin_info), GFP_KERNEL); if (!rk808->pins) return -ENOMEM; rk808->pins->p = devm_pinctrl_get(dev); if (IS_ERR(rk808->pins->p)) { rk808->pins->p = NULL; dev_err(dev, "no pinctrl handle\n"); return 0; } default_st = pinctrl_lookup_state(rk808->pins->p, PINCTRL_STATE_DEFAULT); if (IS_ERR(default_st)) { dev_dbg(dev, "no default pinctrl state\n"); return -EINVAL; } ret = pinctrl_select_state(rk808->pins->p, default_st); if (ret) { dev_dbg(dev, "failed to activate default pinctrl state\n"); return -EINVAL; } rk808->pins->power_off = pinctrl_lookup_state(rk808->pins->p, "pmic-power-off"); if (IS_ERR(rk808->pins->power_off)) { rk808->pins->power_off = NULL; dev_dbg(dev, "no power-off pinctrl state\n"); } rk808->pins->sleep = pinctrl_lookup_state(rk808->pins->p, "pmic-sleep"); if (IS_ERR(rk808->pins->sleep)) { rk808->pins->sleep = NULL; dev_dbg(dev, "no sleep-setting state\n"); } rk808->pins->reset = pinctrl_lookup_state(rk808->pins->p, "pmic-reset"); if (IS_ERR(rk808->pins->reset)) { rk808->pins->reset = NULL; dev_dbg(dev, "no reset-setting pinctrl state\n"); return 0; } ret = pinctrl_select_state(rk808->pins->p, rk808->pins->reset); if (ret) dev_dbg(dev, "failed to activate reset-setting pinctrl state\n"); return 0; } struct rk817_reboot_data_t { struct rk808 *rk808; struct notifier_block reboot_notifier; }; static struct rk817_reboot_data_t rk817_reboot_data; static int rk817_reboot_notifier_handler(struct notifier_block *nb, unsigned long action, void *cmd) { struct rk817_reboot_data_t *data; struct device *dev; int value, power_en_active0, power_en_active1; int ret, i; static const char * const pmic_rst_reg_only_cmd[] = { "loader", "bootloader", "fastboot", "recovery", "ums", "panic", "watchdog", "charge", }; data = container_of(nb, struct rk817_reboot_data_t, reboot_notifier); dev = &data->rk808->i2c->dev; regmap_read(data->rk808->regmap, RK817_POWER_EN_SAVE0, &power_en_active0); if (power_en_active0 != 0) { regmap_read(data->rk808->regmap, RK817_POWER_EN_SAVE1, &power_en_active1); value = power_en_active0 & 0x0f; regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(0), value | 0xf0); value = (power_en_active0 & 0xf0) >> 4; regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(1), value | 0xf0); value = power_en_active1 & 0x0f; regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(2), value | 0xf0); value = (power_en_active1 & 0xf0) >> 4; regmap_write(data->rk808->regmap, RK817_POWER_EN_REG(3), value | 0xf0); } else { dev_info(dev, "reboot: not restore POWER_EN\n"); } if (action != SYS_RESTART || !cmd) return NOTIFY_OK; /* * When system restart, there are two rst actions of PMIC sleep if * board hardware support: * * 0b'00: reset the PMIC itself completely. * 0b'01: reset the 'RST' related register only. * * In the case of 0b'00, PMIC reset itself which triggers SoC NPOR-reset * at the same time, so the command: reboot load/bootload/recovery, etc * is not effect any more. * * Here we check if this reboot cmd is what we expect for 0b'01. */ for (i = 0; i < ARRAY_SIZE(pmic_rst_reg_only_cmd); i++) { if (!strcmp(cmd, pmic_rst_reg_only_cmd[i])) { ret = regmap_update_bits(data->rk808->regmap, RK817_SYS_CFG(3), RK817_RST_FUNC_MSK, RK817_RST_FUNC_REG); if (ret) dev_err(dev, "reboot: force RK817_RST_FUNC_REG error!\n"); else dev_info(dev, "reboot: force RK817_RST_FUNC_REG ok!\n"); break; } } return NOTIFY_OK; } static void rk817_of_property_prepare(struct rk808 *rk808, struct device *dev) { u32 inner; int ret, func, msk, val; struct device_node *np = dev->of_node; ret = of_property_read_u32_index(np, "fb-inner-reg-idxs", 0, &inner); if (!ret && inner == RK817_ID_DCDC3) regmap_update_bits(rk808->regmap, RK817_POWER_CONFIG, RK817_BUCK3_FB_RES_MSK, RK817_BUCK3_FB_RES_INTER); else regmap_update_bits(rk808->regmap, RK817_POWER_CONFIG, RK817_BUCK3_FB_RES_MSK, RK817_BUCK3_FB_RES_EXT); dev_info(dev, "support dcdc3 fb mode:%d, %d\n", ret, inner); ret = of_property_read_u32(np, "pmic-reset-func", &func); msk = RK817_SLPPIN_FUNC_MSK | RK817_RST_FUNC_MSK; val = SLPPIN_NULL_FUN; if (!ret && func < RK817_RST_FUNC_CNT) { val |= RK817_RST_FUNC_MSK & (func << RK817_RST_FUNC_SFT); } else { val |= RK817_RST_FUNC_REG; } regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), msk, val); dev_info(dev, "support pmic reset mode:%d,%d\n", ret, func); rk817_reboot_data.rk808 = rk808; rk817_reboot_data.reboot_notifier.notifier_call = rk817_reboot_notifier_handler; ret = register_reboot_notifier(&rk817_reboot_data.reboot_notifier); if (ret) dev_err(dev, "failed to register reboot nb\n"); } static struct kobject *rk8xx_kobj; static struct device_attribute rk8xx_attrs = __ATTR(rk8xx_dbg, 0200, NULL, rk8xx_dbg_store); static const struct of_device_id rk808_of_match[] = { { .compatible = "rockchip,rk805" }, { .compatible = "rockchip,rk808" }, { .compatible = "rockchip,rk809" }, { .compatible = "rockchip,rk816" }, { .compatible = "rockchip,rk817" }, { .compatible = "rockchip,rk818" }, { }, }; MODULE_DEVICE_TABLE(of, rk808_of_match); static int rk808_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device_node *np = client->dev.of_node; struct rk808 *rk808; const struct rk808_reg_data *pre_init_reg; const struct regmap_irq_chip *battery_irq_chip = NULL; const struct mfd_cell *cells; unsigned char pmic_id_msb, pmic_id_lsb; u8 on_source = 0, off_source = 0; unsigned int on, off; int pm_off = 0, msb, lsb; int nr_pre_init_regs; int nr_cells; int ret; int i; void (*of_property_prepare_fn)(struct rk808 *rk808, struct device *dev) = NULL; int (*pinctrl_init)(struct device *dev, struct rk808 *rk808) = NULL; void (*device_shutdown_fn)(void) = NULL; 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); on_source = RK805_ON_SOURCE_REG; off_source = RK805_OFF_SOURCE_REG; suspend_reg = rk805_suspend_reg; suspend_reg_num = ARRAY_SIZE(rk805_suspend_reg); resume_reg = rk805_resume_reg; resume_reg_num = ARRAY_SIZE(rk805_resume_reg); device_shutdown_fn = rk8xx_device_shutdown; rk808->pm_pwroff_prep_fn = rk805_device_shutdown_prepare; 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); device_shutdown_fn = rk8xx_device_shutdown; break; case RK816_ID: rk808->regmap_cfg = &rk816_regmap_config; rk808->regmap_irq_chip = &rk816_irq_chip; battery_irq_chip = &rk816_battery_irq_chip; pre_init_reg = rk816_pre_init_reg; nr_pre_init_regs = ARRAY_SIZE(rk816_pre_init_reg); cells = rk816s; nr_cells = ARRAY_SIZE(rk816s); on_source = RK816_ON_SOURCE_REG; off_source = RK816_OFF_SOURCE_REG; suspend_reg = rk816_suspend_reg; suspend_reg_num = ARRAY_SIZE(rk816_suspend_reg); resume_reg = rk816_resume_reg; resume_reg_num = ARRAY_SIZE(rk816_resume_reg); device_shutdown_fn = rk8xx_device_shutdown; 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); on_source = RK818_ON_SOURCE_REG; off_source = RK818_OFF_SOURCE_REG; suspend_reg = rk818_suspend_reg; suspend_reg_num = ARRAY_SIZE(rk818_suspend_reg); resume_reg = rk818_resume_reg; resume_reg_num = ARRAY_SIZE(rk818_resume_reg); device_shutdown_fn = rk8xx_device_shutdown; 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); on_source = RK817_ON_SOURCE_REG; off_source = RK817_OFF_SOURCE_REG; rk808->pm_pwroff_prep_fn = rk817_shutdown_prepare; of_property_prepare_fn = rk817_of_property_prepare; pinctrl_init = rk817_pinctrl_init; break; default: dev_err(&client->dev, "Unsupported RK8XX ID %lu\n", rk808->variant); return -EINVAL; } rk808->i2c = client; rk808_i2c_client = 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 (on_source && off_source) { ret = regmap_read(rk808->regmap, on_source, &on); if (ret) { dev_err(&client->dev, "read 0x%x failed\n", on_source); return ret; } ret = regmap_read(rk808->regmap, off_source, &off); if (ret) { dev_err(&client->dev, "read 0x%x failed\n", off_source); return ret; } dev_info(&client->dev, "source: on=0x%02x, off=0x%02x\n", on, off); } if (!client->irq) { dev_err(&client->dev, "No interrupt support, no core IRQ\n"); return -EINVAL; } if (of_property_prepare_fn) of_property_prepare_fn(rk808, &client->dev); 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; } } if (pinctrl_init) { ret = pinctrl_init(&client->dev, rk808); if (ret) return ret; } 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; } if (battery_irq_chip) { ret = regmap_add_irq_chip(rk808->regmap, client->irq, IRQF_ONESHOT | IRQF_SHARED, -1, battery_irq_chip, &rk808->battery_irq_data); if (ret) { dev_err(&client->dev, "Failed to add batterry irq_chip %d\n", ret); regmap_del_irq_chip(client->irq, rk808->irq_data); 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; } pm_off = of_property_read_bool(np, "rockchip,system-power-controller"); if (pm_off) { if (!pm_power_off_prepare) pm_power_off_prepare = rk808->pm_pwroff_prep_fn; if (device_shutdown_fn) { register_syscore_ops(&rk808_syscore_ops); /* power off system in the syscore shutdown ! */ pm_shutdown = device_shutdown_fn; } } rk8xx_kobj = kobject_create_and_add("rk8xx", NULL); if (rk8xx_kobj) { ret = sysfs_create_file(rk8xx_kobj, &rk8xx_attrs.attr); if (ret) dev_err(&client->dev, "create rk8xx sysfs error\n"); } if (!pm_power_off) pm_power_off = rk808_pm_power_off_dummy; return 0; err_irq: regmap_del_irq_chip(client->irq, rk808->irq_data); if (battery_irq_chip) regmap_del_irq_chip(client->irq, rk808->battery_irq_data); return ret; } static int rk808_remove(struct i2c_client *client) { struct rk808 *rk808 = i2c_get_clientdata(client); regmap_del_irq_chip(client->irq, rk808->irq_data); mfd_remove_devices(&client->dev); /** * 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_dummy) pm_power_off = NULL; /** * As above, check if the pointer is set by us before overwrite. */ if (rk808->pm_pwroff_prep_fn && pm_power_off_prepare == rk808->pm_pwroff_prep_fn) pm_power_off_prepare = NULL; if (pm_shutdown) unregister_syscore_ops(&rk808_syscore_ops); return 0; } static int __maybe_unused rk8xx_suspend(struct device *dev) { struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); int i, ret = 0; int value; for (i = 0; i < suspend_reg_num; i++) { ret = regmap_update_bits(rk808->regmap, suspend_reg[i].addr, suspend_reg[i].mask, suspend_reg[i].value); if (ret) { dev_err(dev, "0x%x write err\n", suspend_reg[i].addr); return ret; } } 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: if (rk808->pins && rk808->pins->p && rk808->pins->sleep) { ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_NULL_FUN); if (ret) { dev_err(dev, "suspend: config SLPPIN_NULL_FUN error!\n"); return ret; } ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPOL_MSK, RK817_SLPPOL_H); if (ret) { dev_err(dev, "suspend: config RK817_SLPPOL_H error!\n"); return ret; } /* pmic need the SCL clock to synchronize register */ regmap_read(rk808->regmap, RK817_SYS_STS, &value); mdelay(2); ret = pinctrl_select_state(rk808->pins->p, rk808->pins->sleep); if (ret) { dev_err(dev, "failed to act slp pinctrl state\n"); return ret; } } break; default: break; } return ret; } static int __maybe_unused rk8xx_resume(struct device *dev) { struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); int i, ret = 0; int value; for (i = 0; i < resume_reg_num; i++) { ret = regmap_update_bits(rk808->regmap, resume_reg[i].addr, resume_reg[i].mask, resume_reg[i].value); if (ret) { dev_err(dev, "0x%x write err\n", resume_reg[i].addr); return ret; } } switch (rk808->variant) { case RK809_ID: case RK817_ID: if (rk808->pins && rk808->pins->p && rk808->pins->reset) { ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPIN_FUNC_MSK, SLPPIN_NULL_FUN); if (ret) { dev_err(dev, "resume: config SLPPIN_NULL_FUN error!\n"); return ret; } ret = regmap_update_bits(rk808->regmap, RK817_SYS_CFG(3), RK817_SLPPOL_MSK, RK817_SLPPOL_L); if (ret) { dev_err(dev, "resume: config RK817_SLPPOL_L error!\n"); return ret; } /* pmic need the SCL clock to synchronize register */ regmap_read(rk808->regmap, RK817_SYS_STS, &value); mdelay(2); ret = pinctrl_select_state(rk808->pins->p, rk808->pins->reset); if (ret) dev_dbg(dev, "failed to act reset pinctrl state\n"); } break; default: break; } return ret; } 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 = rk808_probe, .remove = rk808_remove, }; #ifdef CONFIG_ROCKCHIP_THUNDER_BOOT static int __init rk808_i2c_driver_init(void) { return i2c_add_driver(&rk808_i2c_driver); } subsys_initcall(rk808_i2c_driver_init); static void __exit rk808_i2c_driver_exit(void) { i2c_del_driver(&rk808_i2c_driver); } module_exit(rk808_i2c_driver_exit); #else module_i2c_driver(rk808_i2c_driver); #endif MODULE_LICENSE("GPL"); MODULE_AUTHOR("Chris Zhong "); MODULE_AUTHOR("Zhang Qing "); MODULE_AUTHOR("Wadim Egorov "); MODULE_DESCRIPTION("RK808/RK818 PMIC driver");