diff options
author | S Twiss <stwiss.opensource@diasemi.com> | 2015-07-01 14:11:32 +0100 |
---|---|---|
committer | Lee Jones <lee.jones@linaro.org> | 2015-08-11 15:08:45 +0100 |
commit | 9b40b030c4ad685732dd3ad5b57249db52a74e71 (patch) | |
tree | 3bc1500244a3b05d67609a76ff15c773f3b8c4f0 /drivers/mfd | |
parent | 78b7d84c8f6e49f68d7b63c4d67242d4c1bfbadd (diff) | |
download | linux-9b40b030c4ad685732dd3ad5b57249db52a74e71.tar.bz2 |
mfd: da9062: Supply core driver
Add MFD core driver support for DA9062
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r-- | drivers/mfd/Kconfig | 12 | ||||
-rw-r--r-- | drivers/mfd/Makefile | 3 | ||||
-rw-r--r-- | drivers/mfd/da9062-core.c | 512 |
3 files changed, 526 insertions, 1 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 5f746ef84418..0b442230c716 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -186,6 +186,18 @@ config MFD_DA9055 This driver can be built as a module. If built as a module it will be called "da9055" +config MFD_DA9062 + tristate "Dialog Semiconductor DA9062 PMIC Support" + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + depends on I2C=y + help + Say yes here for support for the Dialog Semiconductor DA9062 PMIC. + This includes the I2C driver and core APIs. + Additional drivers must be enabled in order to use the functionality + of the device. + config MFD_DA9063 bool "Dialog Semiconductor DA9063 PMIC Support" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 530620aa2f70..a59e3fcc8626 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -113,10 +113,11 @@ obj-$(CONFIG_MFD_LP8788) += lp8788.o lp8788-irq.o da9055-objs := da9055-core.o da9055-i2c.o obj-$(CONFIG_MFD_DA9055) += da9055.o - +obj-$(CONFIG_MFD_DA9062) += da9062-core.o da9063-objs := da9063-core.o da9063-irq.o da9063-i2c.o obj-$(CONFIG_MFD_DA9063) += da9063.o obj-$(CONFIG_MFD_DA9150) += da9150-core.o + obj-$(CONFIG_MFD_MAX14577) += max14577.o obj-$(CONFIG_MFD_MAX77686) += max77686.o obj-$(CONFIG_MFD_MAX77693) += max77693.o diff --git a/drivers/mfd/da9062-core.c b/drivers/mfd/da9062-core.c new file mode 100644 index 000000000000..4cf06431f256 --- /dev/null +++ b/drivers/mfd/da9062-core.c @@ -0,0 +1,512 @@ +/* + * 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 <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/interrupt.h> +#include <linux/regmap.h> +#include <linux/irq.h> +#include <linux/mfd/core.h> +#include <linux/i2c.h> +#include <linux/mfd/da9062/core.h> +#include <linux/mfd/da9062/registers.h> +#include <linux/regulator/of_regulator.h> + +#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 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", + }, +}; + +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; +} + +int 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 = 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 <stwiss.opensource@diasemi.com>"); +MODULE_LICENSE("GPL"); |