/* * Core, IRQ and I2C device driver for DA9062 PMIC * Copyright (C) 2015 Dialog Semiconductor Ltd. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #define DA9062_REG_EVENT_A_OFFSET 0 #define DA9062_REG_EVENT_B_OFFSET 1 #define DA9062_REG_EVENT_C_OFFSET 2 static struct regmap_irq da9062_irqs[] = { /* EVENT A */ [DA9062_IRQ_ONKEY] = { .reg_offset = DA9062_REG_EVENT_A_OFFSET, .mask = DA9062AA_M_NONKEY_MASK, }, [DA9062_IRQ_ALARM] = { .reg_offset = DA9062_REG_EVENT_A_OFFSET, .mask = DA9062AA_M_ALARM_MASK, }, [DA9062_IRQ_TICK] = { .reg_offset = DA9062_REG_EVENT_A_OFFSET, .mask = DA9062AA_M_TICK_MASK, }, [DA9062_IRQ_WDG_WARN] = { .reg_offset = DA9062_REG_EVENT_A_OFFSET, .mask = DA9062AA_M_WDG_WARN_MASK, }, [DA9062_IRQ_SEQ_RDY] = { .reg_offset = DA9062_REG_EVENT_A_OFFSET, .mask = DA9062AA_M_SEQ_RDY_MASK, }, /* EVENT B */ [DA9062_IRQ_TEMP] = { .reg_offset = DA9062_REG_EVENT_B_OFFSET, .mask = DA9062AA_M_TEMP_MASK, }, [DA9062_IRQ_LDO_LIM] = { .reg_offset = DA9062_REG_EVENT_B_OFFSET, .mask = DA9062AA_M_LDO_LIM_MASK, }, [DA9062_IRQ_DVC_RDY] = { .reg_offset = DA9062_REG_EVENT_B_OFFSET, .mask = DA9062AA_M_DVC_RDY_MASK, }, [DA9062_IRQ_VDD_WARN] = { .reg_offset = DA9062_REG_EVENT_B_OFFSET, .mask = DA9062AA_M_VDD_WARN_MASK, }, /* EVENT C */ [DA9062_IRQ_GPI0] = { .reg_offset = DA9062_REG_EVENT_C_OFFSET, .mask = DA9062AA_M_GPI0_MASK, }, [DA9062_IRQ_GPI1] = { .reg_offset = DA9062_REG_EVENT_C_OFFSET, .mask = DA9062AA_M_GPI1_MASK, }, [DA9062_IRQ_GPI2] = { .reg_offset = DA9062_REG_EVENT_C_OFFSET, .mask = DA9062AA_M_GPI2_MASK, }, [DA9062_IRQ_GPI3] = { .reg_offset = DA9062_REG_EVENT_C_OFFSET, .mask = DA9062AA_M_GPI3_MASK, }, [DA9062_IRQ_GPI4] = { .reg_offset = DA9062_REG_EVENT_C_OFFSET, .mask = DA9062AA_M_GPI4_MASK, }, }; static struct regmap_irq_chip da9062_irq_chip = { .name = "da9062-irq", .irqs = da9062_irqs, .num_irqs = DA9062_NUM_IRQ, .num_regs = 3, .status_base = DA9062AA_EVENT_A, .mask_base = DA9062AA_IRQ_MASK_A, .ack_base = DA9062AA_EVENT_A, }; static struct resource da9062_core_resources[] = { DEFINE_RES_NAMED(DA9062_IRQ_VDD_WARN, 1, "VDD_WARN", IORESOURCE_IRQ), }; static struct resource da9062_regulators_resources[] = { DEFINE_RES_NAMED(DA9062_IRQ_LDO_LIM, 1, "LDO_LIM", IORESOURCE_IRQ), }; static struct resource da9062_thermal_resources[] = { DEFINE_RES_NAMED(DA9062_IRQ_TEMP, 1, "THERMAL", IORESOURCE_IRQ), }; static struct resource da9062_wdt_resources[] = { DEFINE_RES_NAMED(DA9062_IRQ_WDG_WARN, 1, "WD_WARN", IORESOURCE_IRQ), }; static struct resource da9062_rtc_resources[] = { DEFINE_RES_NAMED(DA9062_IRQ_ALARM, 1, "ALARM", IORESOURCE_IRQ), DEFINE_RES_NAMED(DA9062_IRQ_TICK, 1, "TICK", IORESOURCE_IRQ), }; static struct resource da9062_onkey_resources[] = { DEFINE_RES_NAMED(DA9062_IRQ_ONKEY, 1, "ONKEY", IORESOURCE_IRQ), }; static const struct mfd_cell da9062_devs[] = { { .name = "da9062-core", .num_resources = ARRAY_SIZE(da9062_core_resources), .resources = da9062_core_resources, }, { .name = "da9062-regulators", .num_resources = ARRAY_SIZE(da9062_regulators_resources), .resources = da9062_regulators_resources, }, { .name = "da9062-watchdog", .num_resources = ARRAY_SIZE(da9062_wdt_resources), .resources = da9062_wdt_resources, .of_compatible = "dlg,da9062-wdt", }, { .name = "da9062-thermal", .num_resources = ARRAY_SIZE(da9062_thermal_resources), .resources = da9062_thermal_resources, .of_compatible = "dlg,da9062-thermal", }, { .name = "da9062-rtc", .num_resources = ARRAY_SIZE(da9062_rtc_resources), .resources = da9062_rtc_resources, .of_compatible = "dlg,da9062-rtc", }, { .name = "da9062-onkey", .num_resources = ARRAY_SIZE(da9062_onkey_resources), .resources = da9062_onkey_resources, .of_compatible = "dlg,da9062-onkey", }, }; static int da9062_clear_fault_log(struct da9062 *chip) { int ret; int fault_log; ret = regmap_read(chip->regmap, DA9062AA_FAULT_LOG, &fault_log); if (ret < 0) return ret; if (fault_log) { if (fault_log & DA9062AA_TWD_ERROR_MASK) dev_dbg(chip->dev, "Fault log entry detected: TWD_ERROR\n"); if (fault_log & DA9062AA_POR_MASK) dev_dbg(chip->dev, "Fault log entry detected: POR\n"); if (fault_log & DA9062AA_VDD_FAULT_MASK) dev_dbg(chip->dev, "Fault log entry detected: VDD_FAULT\n"); if (fault_log & DA9062AA_VDD_START_MASK) dev_dbg(chip->dev, "Fault log entry detected: VDD_START\n"); if (fault_log & DA9062AA_TEMP_CRIT_MASK) dev_dbg(chip->dev, "Fault log entry detected: TEMP_CRIT\n"); if (fault_log & DA9062AA_KEY_RESET_MASK) dev_dbg(chip->dev, "Fault log entry detected: KEY_RESET\n"); if (fault_log & DA9062AA_NSHUTDOWN_MASK) dev_dbg(chip->dev, "Fault log entry detected: NSHUTDOWN\n"); if (fault_log & DA9062AA_WAIT_SHUT_MASK) dev_dbg(chip->dev, "Fault log entry detected: WAIT_SHUT\n"); ret = regmap_write(chip->regmap, DA9062AA_FAULT_LOG, fault_log); } return ret; } static int da9062_get_device_type(struct da9062 *chip) { int device_id, variant_id, variant_mrc; int ret; ret = regmap_read(chip->regmap, DA9062AA_DEVICE_ID, &device_id); if (ret < 0) { dev_err(chip->dev, "Cannot read chip ID.\n"); return -EIO; } if (device_id != DA9062_PMIC_DEVICE_ID) { dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id); return -ENODEV; } ret = regmap_read(chip->regmap, DA9062AA_VARIANT_ID, &variant_id); if (ret < 0) { dev_err(chip->dev, "Cannot read chip variant id.\n"); return -EIO; } dev_info(chip->dev, "Device detected (device-ID: 0x%02X, var-ID: 0x%02X)\n", device_id, variant_id); variant_mrc = (variant_id & DA9062AA_MRC_MASK) >> DA9062AA_MRC_SHIFT; if (variant_mrc < DA9062_PMIC_VARIANT_MRC_AA) { dev_err(chip->dev, "Cannot support variant MRC: 0x%02X\n", variant_mrc); return -ENODEV; } return ret; } static const struct regmap_range da9062_aa_readable_ranges[] = { { .range_min = DA9062AA_PAGE_CON, .range_max = DA9062AA_STATUS_B, }, { .range_min = DA9062AA_STATUS_D, .range_max = DA9062AA_EVENT_C, }, { .range_min = DA9062AA_IRQ_MASK_A, .range_max = DA9062AA_IRQ_MASK_C, }, { .range_min = DA9062AA_CONTROL_A, .range_max = DA9062AA_GPIO_4, }, { .range_min = DA9062AA_GPIO_WKUP_MODE, .range_max = DA9062AA_BUCK4_CONT, }, { .range_min = DA9062AA_BUCK3_CONT, .range_max = DA9062AA_BUCK3_CONT, }, { .range_min = DA9062AA_LDO1_CONT, .range_max = DA9062AA_LDO4_CONT, }, { .range_min = DA9062AA_DVC_1, .range_max = DA9062AA_DVC_1, }, { .range_min = DA9062AA_COUNT_S, .range_max = DA9062AA_SECOND_D, }, { .range_min = DA9062AA_SEQ, .range_max = DA9062AA_ID_4_3, }, { .range_min = DA9062AA_ID_12_11, .range_max = DA9062AA_ID_16_15, }, { .range_min = DA9062AA_ID_22_21, .range_max = DA9062AA_ID_32_31, }, { .range_min = DA9062AA_SEQ_A, .range_max = DA9062AA_BUCK3_CFG, }, { .range_min = DA9062AA_VBUCK2_A, .range_max = DA9062AA_VBUCK4_A, }, { .range_min = DA9062AA_VBUCK3_A, .range_max = DA9062AA_VBUCK3_A, }, { .range_min = DA9062AA_VLDO1_A, .range_max = DA9062AA_VLDO4_A, }, { .range_min = DA9062AA_VBUCK2_B, .range_max = DA9062AA_VBUCK4_B, }, { .range_min = DA9062AA_VBUCK3_B, .range_max = DA9062AA_VBUCK3_B, }, { .range_min = DA9062AA_VLDO1_B, .range_max = DA9062AA_VLDO4_B, }, { .range_min = DA9062AA_BBAT_CONT, .range_max = DA9062AA_BBAT_CONT, }, { .range_min = DA9062AA_INTERFACE, .range_max = DA9062AA_CONFIG_E, }, { .range_min = DA9062AA_CONFIG_G, .range_max = DA9062AA_CONFIG_K, }, { .range_min = DA9062AA_CONFIG_M, .range_max = DA9062AA_CONFIG_M, }, { .range_min = DA9062AA_TRIM_CLDR, .range_max = DA9062AA_GP_ID_19, }, { .range_min = DA9062AA_DEVICE_ID, .range_max = DA9062AA_CONFIG_ID, }, }; static const struct regmap_range da9062_aa_writeable_ranges[] = { { .range_min = DA9062AA_PAGE_CON, .range_max = DA9062AA_PAGE_CON, }, { .range_min = DA9062AA_FAULT_LOG, .range_max = DA9062AA_EVENT_C, }, { .range_min = DA9062AA_IRQ_MASK_A, .range_max = DA9062AA_IRQ_MASK_C, }, { .range_min = DA9062AA_CONTROL_A, .range_max = DA9062AA_GPIO_4, }, { .range_min = DA9062AA_GPIO_WKUP_MODE, .range_max = DA9062AA_BUCK4_CONT, }, { .range_min = DA9062AA_BUCK3_CONT, .range_max = DA9062AA_BUCK3_CONT, }, { .range_min = DA9062AA_LDO1_CONT, .range_max = DA9062AA_LDO4_CONT, }, { .range_min = DA9062AA_DVC_1, .range_max = DA9062AA_DVC_1, }, { .range_min = DA9062AA_COUNT_S, .range_max = DA9062AA_ALARM_Y, }, { .range_min = DA9062AA_SEQ, .range_max = DA9062AA_ID_4_3, }, { .range_min = DA9062AA_ID_12_11, .range_max = DA9062AA_ID_16_15, }, { .range_min = DA9062AA_ID_22_21, .range_max = DA9062AA_ID_32_31, }, { .range_min = DA9062AA_SEQ_A, .range_max = DA9062AA_BUCK3_CFG, }, { .range_min = DA9062AA_VBUCK2_A, .range_max = DA9062AA_VBUCK4_A, }, { .range_min = DA9062AA_VBUCK3_A, .range_max = DA9062AA_VBUCK3_A, }, { .range_min = DA9062AA_VLDO1_A, .range_max = DA9062AA_VLDO4_A, }, { .range_min = DA9062AA_VBUCK2_B, .range_max = DA9062AA_VBUCK4_B, }, { .range_min = DA9062AA_VBUCK3_B, .range_max = DA9062AA_VBUCK3_B, }, { .range_min = DA9062AA_VLDO1_B, .range_max = DA9062AA_VLDO4_B, }, { .range_min = DA9062AA_BBAT_CONT, .range_max = DA9062AA_BBAT_CONT, }, { .range_min = DA9062AA_GP_ID_0, .range_max = DA9062AA_GP_ID_19, }, }; static const struct regmap_range da9062_aa_volatile_ranges[] = { { .range_min = DA9062AA_PAGE_CON, .range_max = DA9062AA_STATUS_B, }, { .range_min = DA9062AA_STATUS_D, .range_max = DA9062AA_EVENT_C, }, { .range_min = DA9062AA_CONTROL_F, .range_max = DA9062AA_CONTROL_F, }, { .range_min = DA9062AA_COUNT_S, .range_max = DA9062AA_SECOND_D, }, }; static const struct regmap_access_table da9062_aa_readable_table = { .yes_ranges = da9062_aa_readable_ranges, .n_yes_ranges = ARRAY_SIZE(da9062_aa_readable_ranges), }; static const struct regmap_access_table da9062_aa_writeable_table = { .yes_ranges = da9062_aa_writeable_ranges, .n_yes_ranges = ARRAY_SIZE(da9062_aa_writeable_ranges), }; static const struct regmap_access_table da9062_aa_volatile_table = { .yes_ranges = da9062_aa_volatile_ranges, .n_yes_ranges = ARRAY_SIZE(da9062_aa_volatile_ranges), }; static const struct regmap_range_cfg da9062_range_cfg[] = { { .range_min = DA9062AA_PAGE_CON, .range_max = DA9062AA_CONFIG_ID, .selector_reg = DA9062AA_PAGE_CON, .selector_mask = 1 << DA9062_I2C_PAGE_SEL_SHIFT, .selector_shift = DA9062_I2C_PAGE_SEL_SHIFT, .window_start = 0, .window_len = 256, } }; static struct regmap_config da9062_regmap_config = { .reg_bits = 8, .val_bits = 8, .ranges = da9062_range_cfg, .num_ranges = ARRAY_SIZE(da9062_range_cfg), .max_register = DA9062AA_CONFIG_ID, .cache_type = REGCACHE_RBTREE, .rd_table = &da9062_aa_readable_table, .wr_table = &da9062_aa_writeable_table, .volatile_table = &da9062_aa_volatile_table, }; static int da9062_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct da9062 *chip; unsigned int irq_base; int ret; chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL); if (!chip) return -ENOMEM; i2c_set_clientdata(i2c, chip); chip->dev = &i2c->dev; if (!i2c->irq) { dev_err(chip->dev, "No IRQ configured\n"); return -EINVAL; } chip->regmap = devm_regmap_init_i2c(i2c, &da9062_regmap_config); if (IS_ERR(chip->regmap)) { ret = PTR_ERR(chip->regmap); dev_err(chip->dev, "Failed to allocate register map: %d\n", ret); return ret; } ret = da9062_clear_fault_log(chip); if (ret < 0) dev_warn(chip->dev, "Cannot clear fault log\n"); ret = da9062_get_device_type(chip); if (ret) return ret; ret = regmap_add_irq_chip(chip->regmap, i2c->irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED, -1, &da9062_irq_chip, &chip->regmap_irq); if (ret) { dev_err(chip->dev, "Failed to request IRQ %d: %d\n", i2c->irq, ret); return ret; } irq_base = regmap_irq_chip_get_base(chip->regmap_irq); ret = mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, da9062_devs, ARRAY_SIZE(da9062_devs), NULL, irq_base, NULL); if (ret) { dev_err(chip->dev, "Cannot register child devices\n"); regmap_del_irq_chip(i2c->irq, chip->regmap_irq); return ret; } return ret; } static int da9062_i2c_remove(struct i2c_client *i2c) { struct da9062 *chip = i2c_get_clientdata(i2c); mfd_remove_devices(chip->dev); regmap_del_irq_chip(i2c->irq, chip->regmap_irq); return 0; } static const struct i2c_device_id da9062_i2c_id[] = { { "da9062", 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, da9062_i2c_id); static const struct of_device_id da9062_dt_ids[] = { { .compatible = "dlg,da9062", }, { } }; MODULE_DEVICE_TABLE(of, da9062_dt_ids); static struct i2c_driver da9062_i2c_driver = { .driver = { .name = "da9062", .of_match_table = of_match_ptr(da9062_dt_ids), }, .probe = da9062_i2c_probe, .remove = da9062_i2c_remove, .id_table = da9062_i2c_id, }; module_i2c_driver(da9062_i2c_driver); MODULE_DESCRIPTION("Core device driver for Dialog DA9062"); MODULE_AUTHOR("Steve Twiss "); MODULE_LICENSE("GPL");