// SPDX-License-Identifier: GPL-2.0-or-later /* * Device access for Dialog DA9052 PMICs. * * Copyright(c) 2011 Dialog Semiconductor Ltd. * * Author: David Dajun Chen <dchen@diasemi.com> */ #include <linux/device.h> #include <linux/delay.h> #include <linux/input.h> #include <linux/interrupt.h> #include <linux/mfd/core.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/property.h> #include <linux/mfd/da9052/da9052.h> #include <linux/mfd/da9052/pdata.h> #include <linux/mfd/da9052/reg.h> static bool da9052_reg_readable(struct device *dev, unsigned int reg) { switch (reg) { case DA9052_PAGE0_CON_REG: case DA9052_STATUS_A_REG: case DA9052_STATUS_B_REG: case DA9052_STATUS_C_REG: case DA9052_STATUS_D_REG: case DA9052_EVENT_A_REG: case DA9052_EVENT_B_REG: case DA9052_EVENT_C_REG: case DA9052_EVENT_D_REG: case DA9052_FAULTLOG_REG: case DA9052_IRQ_MASK_A_REG: case DA9052_IRQ_MASK_B_REG: case DA9052_IRQ_MASK_C_REG: case DA9052_IRQ_MASK_D_REG: case DA9052_CONTROL_A_REG: case DA9052_CONTROL_B_REG: case DA9052_CONTROL_C_REG: case DA9052_CONTROL_D_REG: case DA9052_PDDIS_REG: case DA9052_INTERFACE_REG: case DA9052_RESET_REG: case DA9052_GPIO_0_1_REG: case DA9052_GPIO_2_3_REG: case DA9052_GPIO_4_5_REG: case DA9052_GPIO_6_7_REG: case DA9052_GPIO_8_9_REG: case DA9052_GPIO_10_11_REG: case DA9052_GPIO_12_13_REG: case DA9052_GPIO_14_15_REG: case DA9052_ID_0_1_REG: case DA9052_ID_2_3_REG: case DA9052_ID_4_5_REG: case DA9052_ID_6_7_REG: case DA9052_ID_8_9_REG: case DA9052_ID_10_11_REG: case DA9052_ID_12_13_REG: case DA9052_ID_14_15_REG: case DA9052_ID_16_17_REG: case DA9052_ID_18_19_REG: case DA9052_ID_20_21_REG: case DA9052_SEQ_STATUS_REG: case DA9052_SEQ_A_REG: case DA9052_SEQ_B_REG: case DA9052_SEQ_TIMER_REG: case DA9052_BUCKA_REG: case DA9052_BUCKB_REG: case DA9052_BUCKCORE_REG: case DA9052_BUCKPRO_REG: case DA9052_BUCKMEM_REG: case DA9052_BUCKPERI_REG: case DA9052_LDO1_REG: case DA9052_LDO2_REG: case DA9052_LDO3_REG: case DA9052_LDO4_REG: case DA9052_LDO5_REG: case DA9052_LDO6_REG: case DA9052_LDO7_REG: case DA9052_LDO8_REG: case DA9052_LDO9_REG: case DA9052_LDO10_REG: case DA9052_SUPPLY_REG: case DA9052_PULLDOWN_REG: case DA9052_CHGBUCK_REG: case DA9052_WAITCONT_REG: case DA9052_ISET_REG: case DA9052_BATCHG_REG: case DA9052_CHG_CONT_REG: case DA9052_INPUT_CONT_REG: case DA9052_CHG_TIME_REG: case DA9052_BBAT_CONT_REG: case DA9052_BOOST_REG: case DA9052_LED_CONT_REG: case DA9052_LEDMIN123_REG: case DA9052_LED1_CONF_REG: case DA9052_LED2_CONF_REG: case DA9052_LED3_CONF_REG: case DA9052_LED1CONT_REG: case DA9052_LED2CONT_REG: case DA9052_LED3CONT_REG: case DA9052_LED_CONT_4_REG: case DA9052_LED_CONT_5_REG: case DA9052_ADC_MAN_REG: case DA9052_ADC_CONT_REG: case DA9052_ADC_RES_L_REG: case DA9052_ADC_RES_H_REG: case DA9052_VDD_RES_REG: case DA9052_VDD_MON_REG: case DA9052_ICHG_AV_REG: case DA9052_ICHG_THD_REG: case DA9052_ICHG_END_REG: case DA9052_TBAT_RES_REG: case DA9052_TBAT_HIGHP_REG: case DA9052_TBAT_HIGHN_REG: case DA9052_TBAT_LOW_REG: case DA9052_T_OFFSET_REG: case DA9052_ADCIN4_RES_REG: case DA9052_AUTO4_HIGH_REG: case DA9052_AUTO4_LOW_REG: case DA9052_ADCIN5_RES_REG: case DA9052_AUTO5_HIGH_REG: case DA9052_AUTO5_LOW_REG: case DA9052_ADCIN6_RES_REG: case DA9052_AUTO6_HIGH_REG: case DA9052_AUTO6_LOW_REG: case DA9052_TJUNC_RES_REG: case DA9052_TSI_CONT_A_REG: case DA9052_TSI_CONT_B_REG: case DA9052_TSI_X_MSB_REG: case DA9052_TSI_Y_MSB_REG: case DA9052_TSI_LSB_REG: case DA9052_TSI_Z_MSB_REG: case DA9052_COUNT_S_REG: case DA9052_COUNT_MI_REG: case DA9052_COUNT_H_REG: case DA9052_COUNT_D_REG: case DA9052_COUNT_MO_REG: case DA9052_COUNT_Y_REG: case DA9052_ALARM_MI_REG: case DA9052_ALARM_H_REG: case DA9052_ALARM_D_REG: case DA9052_ALARM_MO_REG: case DA9052_ALARM_Y_REG: case DA9052_SECOND_A_REG: case DA9052_SECOND_B_REG: case DA9052_SECOND_C_REG: case DA9052_SECOND_D_REG: case DA9052_PAGE1_CON_REG: return true; default: return false; } } static bool da9052_reg_writeable(struct device *dev, unsigned int reg) { switch (reg) { case DA9052_PAGE0_CON_REG: case DA9052_EVENT_A_REG: case DA9052_EVENT_B_REG: case DA9052_EVENT_C_REG: case DA9052_EVENT_D_REG: case DA9052_FAULTLOG_REG: case DA9052_IRQ_MASK_A_REG: case DA9052_IRQ_MASK_B_REG: case DA9052_IRQ_MASK_C_REG: case DA9052_IRQ_MASK_D_REG: case DA9052_CONTROL_A_REG: case DA9052_CONTROL_B_REG: case DA9052_CONTROL_C_REG: case DA9052_CONTROL_D_REG: case DA9052_PDDIS_REG: case DA9052_RESET_REG: case DA9052_GPIO_0_1_REG: case DA9052_GPIO_2_3_REG: case DA9052_GPIO_4_5_REG: case DA9052_GPIO_6_7_REG: case DA9052_GPIO_8_9_REG: case DA9052_GPIO_10_11_REG: case DA9052_GPIO_12_13_REG: case DA9052_GPIO_14_15_REG: case DA9052_ID_0_1_REG: case DA9052_ID_2_3_REG: case DA9052_ID_4_5_REG: case DA9052_ID_6_7_REG: case DA9052_ID_8_9_REG: case DA9052_ID_10_11_REG: case DA9052_ID_12_13_REG: case DA9052_ID_14_15_REG: case DA9052_ID_16_17_REG: case DA9052_ID_18_19_REG: case DA9052_ID_20_21_REG: case DA9052_SEQ_STATUS_REG: case DA9052_SEQ_A_REG: case DA9052_SEQ_B_REG: case DA9052_SEQ_TIMER_REG: case DA9052_BUCKA_REG: case DA9052_BUCKB_REG: case DA9052_BUCKCORE_REG: case DA9052_BUCKPRO_REG: case DA9052_BUCKMEM_REG: case DA9052_BUCKPERI_REG: case DA9052_LDO1_REG: case DA9052_LDO2_REG: case DA9052_LDO3_REG: case DA9052_LDO4_REG: case DA9052_LDO5_REG: case DA9052_LDO6_REG: case DA9052_LDO7_REG: case DA9052_LDO8_REG: case DA9052_LDO9_REG: case DA9052_LDO10_REG: case DA9052_SUPPLY_REG: case DA9052_PULLDOWN_REG: case DA9052_CHGBUCK_REG: case DA9052_WAITCONT_REG: case DA9052_ISET_REG: case DA9052_BATCHG_REG: case DA9052_CHG_CONT_REG: case DA9052_INPUT_CONT_REG: case DA9052_BBAT_CONT_REG: case DA9052_BOOST_REG: case DA9052_LED_CONT_REG: case DA9052_LEDMIN123_REG: case DA9052_LED1_CONF_REG: case DA9052_LED2_CONF_REG: case DA9052_LED3_CONF_REG: case DA9052_LED1CONT_REG: case DA9052_LED2CONT_REG: case DA9052_LED3CONT_REG: case DA9052_LED_CONT_4_REG: case DA9052_LED_CONT_5_REG: case DA9052_ADC_MAN_REG: case DA9052_ADC_CONT_REG: case DA9052_ADC_RES_L_REG: case DA9052_ADC_RES_H_REG: case DA9052_VDD_RES_REG: case DA9052_VDD_MON_REG: case DA9052_ICHG_THD_REG: case DA9052_ICHG_END_REG: case DA9052_TBAT_HIGHP_REG: case DA9052_TBAT_HIGHN_REG: case DA9052_TBAT_LOW_REG: case DA9052_T_OFFSET_REG: case DA9052_AUTO4_HIGH_REG: case DA9052_AUTO4_LOW_REG: case DA9052_AUTO5_HIGH_REG: case DA9052_AUTO5_LOW_REG: case DA9052_AUTO6_HIGH_REG: case DA9052_AUTO6_LOW_REG: case DA9052_TSI_CONT_A_REG: case DA9052_TSI_CONT_B_REG: case DA9052_COUNT_S_REG: case DA9052_COUNT_MI_REG: case DA9052_COUNT_H_REG: case DA9052_COUNT_D_REG: case DA9052_COUNT_MO_REG: case DA9052_COUNT_Y_REG: case DA9052_ALARM_MI_REG: case DA9052_ALARM_H_REG: case DA9052_ALARM_D_REG: case DA9052_ALARM_MO_REG: case DA9052_ALARM_Y_REG: case DA9052_PAGE1_CON_REG: return true; default: return false; } } static bool da9052_reg_volatile(struct device *dev, unsigned int reg) { switch (reg) { case DA9052_STATUS_A_REG: case DA9052_STATUS_B_REG: case DA9052_STATUS_C_REG: case DA9052_STATUS_D_REG: case DA9052_EVENT_A_REG: case DA9052_EVENT_B_REG: case DA9052_EVENT_C_REG: case DA9052_EVENT_D_REG: case DA9052_CONTROL_B_REG: case DA9052_CONTROL_D_REG: case DA9052_SUPPLY_REG: case DA9052_FAULTLOG_REG: case DA9052_CHG_TIME_REG: case DA9052_ADC_RES_L_REG: case DA9052_ADC_RES_H_REG: case DA9052_VDD_RES_REG: case DA9052_ICHG_AV_REG: case DA9052_TBAT_RES_REG: case DA9052_ADCIN4_RES_REG: case DA9052_ADCIN5_RES_REG: case DA9052_ADCIN6_RES_REG: case DA9052_TJUNC_RES_REG: case DA9052_TSI_X_MSB_REG: case DA9052_TSI_Y_MSB_REG: case DA9052_TSI_LSB_REG: case DA9052_TSI_Z_MSB_REG: case DA9052_COUNT_S_REG: case DA9052_COUNT_MI_REG: case DA9052_COUNT_H_REG: case DA9052_COUNT_D_REG: case DA9052_COUNT_MO_REG: case DA9052_COUNT_Y_REG: case DA9052_ALARM_MI_REG: return true; default: return false; } } /* * TBAT look-up table is computed from the R90 reg (8 bit register) * reading as below. The battery temperature is in milliCentigrade * TBAT = (1/(t1+1/298) - 273) * 1000 mC * where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255)) * Default values are R25 = 10e3, B = 3380, ITBAT = 50e-6 * Example: * R25=10E3, B=3380, ITBAT=50e-6, ADCVAL=62d calculates * TBAT = 20015 mili degrees Centrigrade * */ static const int32_t tbat_lookup[255] = { 183258, 144221, 124334, 111336, 101826, 94397, 88343, 83257, 78889, 75071, 71688, 68656, 65914, 63414, 61120, 59001, 570366, 55204, 53490, 51881, 50364, 48931, 47574, 46285, 45059, 43889, 42772, 41703, 40678, 39694, 38748, 37838, 36961, 36115, 35297, 34507, 33743, 33002, 32284, 31588, 30911, 30254, 29615, 28994, 28389, 27799, 27225, 26664, 26117, 25584, 25062, 24553, 24054, 23567, 23091, 22624, 22167, 21719, 21281, 20851, 20429, 20015, 19610, 19211, 18820, 18436, 18058, 17688, 17323, 16965, 16612, 16266, 15925, 15589, 15259, 14933, 14613, 14298, 13987, 13681, 13379, 13082, 12788, 12499, 12214, 11933, 11655, 11382, 11112, 10845, 10582, 10322, 10066, 9812, 9562, 9315, 9071, 8830, 8591, 8356, 8123, 7893, 7665, 7440, 7218, 6998, 6780, 6565, 6352, 6141, 5933, 5726, 5522, 5320, 5120, 4922, 4726, 4532, 4340, 4149, 3961, 3774, 3589, 3406, 3225, 3045, 2867, 2690, 2516, 2342, 2170, 2000, 1831, 1664, 1498, 1334, 1171, 1009, 849, 690, 532, 376, 221, 67, -84, -236, -386, -535, -683, -830, -975, -1119, -1263, -1405, -1546, -1686, -1825, -1964, -2101, -2237, -2372, -2506, -2639, -2771, -2902, -3033, -3162, -3291, -3418, -3545, -3671, -3796, -3920, -4044, -4166, -4288, -4409, -4529, -4649, -4767, -4885, -5002, -5119, -5235, -5349, -5464, -5577, -5690, -5802, -5913, -6024, -6134, -6244, -6352, -6461, -6568, -6675, -6781, -6887, -6992, -7096, -7200, -7303, -7406, -7508, -7609, -7710, -7810, -7910, -8009, -8108, -8206, -8304, -8401, -8497, -8593, -8689, -8784, -8878, -8972, -9066, -9159, -9251, -9343, -9435, -9526, -9617, -9707, -9796, -9886, -9975, -10063, -10151, -10238, -10325, -10412, -10839, -10923, -11007, -11090, -11173, -11256, -11338, -11420, -11501, -11583, -11663, -11744, -11823, -11903, -11982 }; static const u8 chan_mux[DA9052_ADC_VBBAT + 1] = { [DA9052_ADC_VDDOUT] = DA9052_ADC_MAN_MUXSEL_VDDOUT, [DA9052_ADC_ICH] = DA9052_ADC_MAN_MUXSEL_ICH, [DA9052_ADC_TBAT] = DA9052_ADC_MAN_MUXSEL_TBAT, [DA9052_ADC_VBAT] = DA9052_ADC_MAN_MUXSEL_VBAT, [DA9052_ADC_IN4] = DA9052_ADC_MAN_MUXSEL_AD4, [DA9052_ADC_IN5] = DA9052_ADC_MAN_MUXSEL_AD5, [DA9052_ADC_IN6] = DA9052_ADC_MAN_MUXSEL_AD6, [DA9052_ADC_VBBAT] = DA9052_ADC_MAN_MUXSEL_VBBAT }; int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel) { int ret; unsigned short calc_data; unsigned short data; unsigned char mux_sel; if (channel > DA9052_ADC_VBBAT) return -EINVAL; mutex_lock(&da9052->auxadc_lock); reinit_completion(&da9052->done); /* Channel gets activated on enabling the Conversion bit */ mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV; ret = da9052_reg_write(da9052, DA9052_ADC_MAN_REG, mux_sel); if (ret < 0) goto err; /* Wait for an interrupt */ if (!wait_for_completion_timeout(&da9052->done, msecs_to_jiffies(500))) { dev_err(da9052->dev, "timeout waiting for ADC conversion interrupt\n"); ret = -ETIMEDOUT; goto err; } ret = da9052_reg_read(da9052, DA9052_ADC_RES_H_REG); if (ret < 0) goto err; calc_data = (unsigned short)ret; data = calc_data << 2; ret = da9052_reg_read(da9052, DA9052_ADC_RES_L_REG); if (ret < 0) goto err; calc_data = (unsigned short)(ret & DA9052_ADC_RES_LSB); data |= calc_data; ret = data; err: mutex_unlock(&da9052->auxadc_lock); return ret; } EXPORT_SYMBOL_GPL(da9052_adc_manual_read); int da9052_adc_read_temp(struct da9052 *da9052) { int tbat; tbat = da9052_reg_read(da9052, DA9052_TBAT_RES_REG); if (tbat <= 0) return tbat; /* ARRAY_SIZE check is not needed since TBAT is a 8-bit register */ return tbat_lookup[tbat - 1]; } EXPORT_SYMBOL_GPL(da9052_adc_read_temp); static const struct mfd_cell da9052_subdev_info[] = { { .name = "da9052-regulator", .id = 0, }, { .name = "da9052-regulator", .id = 1, }, { .name = "da9052-regulator", .id = 2, }, { .name = "da9052-regulator", .id = 3, }, { .name = "da9052-regulator", .id = 4, }, { .name = "da9052-regulator", .id = 5, }, { .name = "da9052-regulator", .id = 6, }, { .name = "da9052-regulator", .id = 7, }, { .name = "da9052-regulator", .id = 8, }, { .name = "da9052-regulator", .id = 9, }, { .name = "da9052-regulator", .id = 10, }, { .name = "da9052-regulator", .id = 11, }, { .name = "da9052-regulator", .id = 12, }, { .name = "da9052-regulator", .id = 13, }, { .name = "da9052-onkey", }, { .name = "da9052-rtc", }, { .name = "da9052-gpio", }, { .name = "da9052-hwmon", }, { .name = "da9052-leds", }, { .name = "da9052-wled1", }, { .name = "da9052-wled2", }, { .name = "da9052-wled3", }, { .name = "da9052-bat", }, { .name = "da9052-watchdog", }, }; static const struct mfd_cell da9052_tsi_subdev_info[] = { { .name = "da9052-tsi" }, }; const struct regmap_config da9052_regmap_config = { .reg_bits = 8, .val_bits = 8, .cache_type = REGCACHE_RBTREE, .max_register = DA9052_PAGE1_CON_REG, .readable_reg = da9052_reg_readable, .writeable_reg = da9052_reg_writeable, .volatile_reg = da9052_reg_volatile, }; EXPORT_SYMBOL_GPL(da9052_regmap_config); static int da9052_clear_fault_log(struct da9052 *da9052) { int ret = 0; int fault_log = 0; fault_log = da9052_reg_read(da9052, DA9052_FAULTLOG_REG); if (fault_log < 0) { dev_err(da9052->dev, "Cannot read FAULT_LOG %d\n", fault_log); return fault_log; } if (fault_log) { if (fault_log & DA9052_FAULTLOG_TWDERROR) dev_dbg(da9052->dev, "Fault log entry detected: TWD_ERROR\n"); if (fault_log & DA9052_FAULTLOG_VDDFAULT) dev_dbg(da9052->dev, "Fault log entry detected: VDD_FAULT\n"); if (fault_log & DA9052_FAULTLOG_VDDSTART) dev_dbg(da9052->dev, "Fault log entry detected: VDD_START\n"); if (fault_log & DA9052_FAULTLOG_TEMPOVER) dev_dbg(da9052->dev, "Fault log entry detected: TEMP_OVER\n"); if (fault_log & DA9052_FAULTLOG_KEYSHUT) dev_dbg(da9052->dev, "Fault log entry detected: KEY_SHUT\n"); if (fault_log & DA9052_FAULTLOG_NSDSET) dev_dbg(da9052->dev, "Fault log entry detected: nSD_SHUT\n"); if (fault_log & DA9052_FAULTLOG_WAITSET) dev_dbg(da9052->dev, "Fault log entry detected: WAIT_SHUT\n"); ret = da9052_reg_write(da9052, DA9052_FAULTLOG_REG, 0xFF); if (ret < 0) dev_err(da9052->dev, "Cannot reset FAULT_LOG values %d\n", ret); } return ret; } int da9052_device_init(struct da9052 *da9052, u8 chip_id) { struct da9052_pdata *pdata = dev_get_platdata(da9052->dev); int ret; mutex_init(&da9052->auxadc_lock); init_completion(&da9052->done); ret = da9052_clear_fault_log(da9052); if (ret < 0) dev_warn(da9052->dev, "Cannot clear FAULT_LOG\n"); if (pdata && pdata->init != NULL) pdata->init(da9052); da9052->chip_id = chip_id; ret = da9052_irq_init(da9052); if (ret != 0) { dev_err(da9052->dev, "da9052_irq_init failed: %d\n", ret); return ret; } ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO, da9052_subdev_info, ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL); if (ret) { dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret); goto err; } /* * Check if touchscreen pins are used are analogue input instead * of having a touchscreen connected to them. The analogue input * functionality will be provided by hwmon driver (if enabled). */ if (!device_property_read_bool(da9052->dev, "dlg,tsi-as-adc")) { ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO, da9052_tsi_subdev_info, ARRAY_SIZE(da9052_tsi_subdev_info), NULL, 0, NULL); if (ret) { dev_err(da9052->dev, "failed to add TSI subdev: %d\n", ret); goto err; } } return 0; err: mfd_remove_devices(da9052->dev); da9052_irq_exit(da9052); return ret; } void da9052_device_exit(struct da9052 *da9052) { mfd_remove_devices(da9052->dev); da9052_irq_exit(da9052); } MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); MODULE_DESCRIPTION("DA9052 MFD Core"); MODULE_LICENSE("GPL");