| /* |
| * axp20x.c - MFD core driver for the X-Powers' Power Management ICs |
| * |
| * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC |
| * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature |
| * as well as configurable GPIOs. |
| * |
| * Author: Carlo Caione <carlo@caione.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/err.h> |
| #include <linux/i2c.h> |
| #include <linux/interrupt.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/regmap.h> |
| #include <linux/slab.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/mfd/axp20x.h> |
| #include <linux/mfd/core.h> |
| #include <linux/of_device.h> |
| #include <linux/of_irq.h> |
| #include <linux/acpi.h> |
| |
| #define AXP20X_OFF 0x80 |
| |
| static const char const *axp20x_model_names[] = { |
| "AXP202", |
| "AXP209", |
| "AXP288", |
| }; |
| |
| static const struct regmap_range axp20x_writeable_ranges[] = { |
| regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE), |
| regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES), |
| }; |
| |
| static const struct regmap_range axp20x_volatile_ranges[] = { |
| regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ5_STATE), |
| }; |
| |
| static const struct regmap_access_table axp20x_writeable_table = { |
| .yes_ranges = axp20x_writeable_ranges, |
| .n_yes_ranges = ARRAY_SIZE(axp20x_writeable_ranges), |
| }; |
| |
| static const struct regmap_access_table axp20x_volatile_table = { |
| .yes_ranges = axp20x_volatile_ranges, |
| .n_yes_ranges = ARRAY_SIZE(axp20x_volatile_ranges), |
| }; |
| |
| static const struct regmap_range axp288_writeable_ranges[] = { |
| regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ6_STATE), |
| regmap_reg_range(AXP20X_DCDC_MODE, AXP288_FG_TUNE5), |
| }; |
| |
| static const struct regmap_range axp288_volatile_ranges[] = { |
| regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IPSOUT_V_HIGH_L), |
| }; |
| |
| static const struct regmap_access_table axp288_writeable_table = { |
| .yes_ranges = axp288_writeable_ranges, |
| .n_yes_ranges = ARRAY_SIZE(axp288_writeable_ranges), |
| }; |
| |
| static const struct regmap_access_table axp288_volatile_table = { |
| .yes_ranges = axp288_volatile_ranges, |
| .n_yes_ranges = ARRAY_SIZE(axp288_volatile_ranges), |
| }; |
| |
| static struct resource axp20x_pek_resources[] = { |
| { |
| .name = "PEK_DBR", |
| .start = AXP20X_IRQ_PEK_RIS_EDGE, |
| .end = AXP20X_IRQ_PEK_RIS_EDGE, |
| .flags = IORESOURCE_IRQ, |
| }, { |
| .name = "PEK_DBF", |
| .start = AXP20X_IRQ_PEK_FAL_EDGE, |
| .end = AXP20X_IRQ_PEK_FAL_EDGE, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct resource axp288_battery_resources[] = { |
| { |
| .start = AXP288_IRQ_QWBTU, |
| .end = AXP288_IRQ_QWBTU, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_WBTU, |
| .end = AXP288_IRQ_WBTU, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_QWBTO, |
| .end = AXP288_IRQ_QWBTO, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_WBTO, |
| .end = AXP288_IRQ_WBTO, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_WL2, |
| .end = AXP288_IRQ_WL2, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_WL1, |
| .end = AXP288_IRQ_WL1, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static const struct regmap_config axp20x_regmap_config = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| .wr_table = &axp20x_writeable_table, |
| .volatile_table = &axp20x_volatile_table, |
| .max_register = AXP20X_FG_RES, |
| .cache_type = REGCACHE_RBTREE, |
| }; |
| |
| static const struct regmap_config axp288_regmap_config = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| .wr_table = &axp288_writeable_table, |
| .volatile_table = &axp288_volatile_table, |
| .max_register = AXP288_FG_TUNE5, |
| .cache_type = REGCACHE_RBTREE, |
| }; |
| |
| #define INIT_REGMAP_IRQ(_variant, _irq, _off, _mask) \ |
| [_variant##_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) } |
| |
| static const struct regmap_irq axp20x_regmap_irqs[] = { |
| INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V, 0, 7), |
| INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN, 0, 6), |
| INIT_REGMAP_IRQ(AXP20X, ACIN_REMOVAL, 0, 5), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_OVER_V, 0, 4), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_PLUGIN, 0, 3), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_REMOVAL, 0, 2), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_V_LOW, 0, 1), |
| INIT_REGMAP_IRQ(AXP20X, BATT_PLUGIN, 1, 7), |
| INIT_REGMAP_IRQ(AXP20X, BATT_REMOVAL, 1, 6), |
| INIT_REGMAP_IRQ(AXP20X, BATT_ENT_ACT_MODE, 1, 5), |
| INIT_REGMAP_IRQ(AXP20X, BATT_EXIT_ACT_MODE, 1, 4), |
| INIT_REGMAP_IRQ(AXP20X, CHARG, 1, 3), |
| INIT_REGMAP_IRQ(AXP20X, CHARG_DONE, 1, 2), |
| INIT_REGMAP_IRQ(AXP20X, BATT_TEMP_HIGH, 1, 1), |
| INIT_REGMAP_IRQ(AXP20X, BATT_TEMP_LOW, 1, 0), |
| INIT_REGMAP_IRQ(AXP20X, DIE_TEMP_HIGH, 2, 7), |
| INIT_REGMAP_IRQ(AXP20X, CHARG_I_LOW, 2, 6), |
| INIT_REGMAP_IRQ(AXP20X, DCDC1_V_LONG, 2, 5), |
| INIT_REGMAP_IRQ(AXP20X, DCDC2_V_LONG, 2, 4), |
| INIT_REGMAP_IRQ(AXP20X, DCDC3_V_LONG, 2, 3), |
| INIT_REGMAP_IRQ(AXP20X, PEK_SHORT, 2, 1), |
| INIT_REGMAP_IRQ(AXP20X, PEK_LONG, 2, 0), |
| INIT_REGMAP_IRQ(AXP20X, N_OE_PWR_ON, 3, 7), |
| INIT_REGMAP_IRQ(AXP20X, N_OE_PWR_OFF, 3, 6), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_VALID, 3, 5), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_NOT_VALID, 3, 4), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_SESS_VALID, 3, 3), |
| INIT_REGMAP_IRQ(AXP20X, VBUS_SESS_END, 3, 2), |
| INIT_REGMAP_IRQ(AXP20X, LOW_PWR_LVL1, 3, 1), |
| INIT_REGMAP_IRQ(AXP20X, LOW_PWR_LVL2, 3, 0), |
| INIT_REGMAP_IRQ(AXP20X, TIMER, 4, 7), |
| INIT_REGMAP_IRQ(AXP20X, PEK_RIS_EDGE, 4, 6), |
| INIT_REGMAP_IRQ(AXP20X, PEK_FAL_EDGE, 4, 5), |
| INIT_REGMAP_IRQ(AXP20X, GPIO3_INPUT, 4, 3), |
| INIT_REGMAP_IRQ(AXP20X, GPIO2_INPUT, 4, 2), |
| INIT_REGMAP_IRQ(AXP20X, GPIO1_INPUT, 4, 1), |
| INIT_REGMAP_IRQ(AXP20X, GPIO0_INPUT, 4, 0), |
| }; |
| |
| /* some IRQs are compatible with axp20x models */ |
| static const struct regmap_irq axp288_regmap_irqs[] = { |
| INIT_REGMAP_IRQ(AXP288, VBUS_FALL, 0, 2), |
| INIT_REGMAP_IRQ(AXP288, VBUS_RISE, 0, 3), |
| INIT_REGMAP_IRQ(AXP288, OV, 0, 4), |
| |
| INIT_REGMAP_IRQ(AXP288, DONE, 1, 2), |
| INIT_REGMAP_IRQ(AXP288, CHARGING, 1, 3), |
| INIT_REGMAP_IRQ(AXP288, SAFE_QUIT, 1, 4), |
| INIT_REGMAP_IRQ(AXP288, SAFE_ENTER, 1, 5), |
| INIT_REGMAP_IRQ(AXP288, ABSENT, 1, 6), |
| INIT_REGMAP_IRQ(AXP288, APPEND, 1, 7), |
| |
| INIT_REGMAP_IRQ(AXP288, QWBTU, 2, 0), |
| INIT_REGMAP_IRQ(AXP288, WBTU, 2, 1), |
| INIT_REGMAP_IRQ(AXP288, QWBTO, 2, 2), |
| INIT_REGMAP_IRQ(AXP288, WBTO, 2, 3), |
| INIT_REGMAP_IRQ(AXP288, QCBTU, 2, 4), |
| INIT_REGMAP_IRQ(AXP288, CBTU, 2, 5), |
| INIT_REGMAP_IRQ(AXP288, QCBTO, 2, 6), |
| INIT_REGMAP_IRQ(AXP288, CBTO, 2, 7), |
| |
| INIT_REGMAP_IRQ(AXP288, WL2, 3, 0), |
| INIT_REGMAP_IRQ(AXP288, WL1, 3, 1), |
| INIT_REGMAP_IRQ(AXP288, GPADC, 3, 2), |
| INIT_REGMAP_IRQ(AXP288, OT, 3, 7), |
| |
| INIT_REGMAP_IRQ(AXP288, GPIO0, 4, 0), |
| INIT_REGMAP_IRQ(AXP288, GPIO1, 4, 1), |
| INIT_REGMAP_IRQ(AXP288, POKO, 4, 2), |
| INIT_REGMAP_IRQ(AXP288, POKL, 4, 3), |
| INIT_REGMAP_IRQ(AXP288, POKS, 4, 4), |
| INIT_REGMAP_IRQ(AXP288, POKN, 4, 5), |
| INIT_REGMAP_IRQ(AXP288, POKP, 4, 6), |
| INIT_REGMAP_IRQ(AXP288, TIMER, 4, 7), |
| |
| INIT_REGMAP_IRQ(AXP288, MV_CHNG, 5, 0), |
| INIT_REGMAP_IRQ(AXP288, BC_USB_CHNG, 5, 1), |
| }; |
| |
| static const struct of_device_id axp20x_of_match[] = { |
| { .compatible = "x-powers,axp202", .data = (void *) AXP202_ID }, |
| { .compatible = "x-powers,axp209", .data = (void *) AXP209_ID }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(of, axp20x_of_match); |
| |
| /* |
| * This is useless for OF-enabled devices, but it is needed by I2C subsystem |
| */ |
| static const struct i2c_device_id axp20x_i2c_id[] = { |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id); |
| |
| static struct acpi_device_id axp20x_acpi_match[] = { |
| { |
| .id = "INT33F4", |
| .driver_data = AXP288_ID, |
| }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(acpi, axp20x_acpi_match); |
| |
| static const struct regmap_irq_chip axp20x_regmap_irq_chip = { |
| .name = "axp20x_irq_chip", |
| .status_base = AXP20X_IRQ1_STATE, |
| .ack_base = AXP20X_IRQ1_STATE, |
| .mask_base = AXP20X_IRQ1_EN, |
| .mask_invert = true, |
| .init_ack_masked = true, |
| .irqs = axp20x_regmap_irqs, |
| .num_irqs = ARRAY_SIZE(axp20x_regmap_irqs), |
| .num_regs = 5, |
| |
| }; |
| |
| static const struct regmap_irq_chip axp288_regmap_irq_chip = { |
| .name = "axp288_irq_chip", |
| .status_base = AXP20X_IRQ1_STATE, |
| .ack_base = AXP20X_IRQ1_STATE, |
| .mask_base = AXP20X_IRQ1_EN, |
| .mask_invert = true, |
| .init_ack_masked = true, |
| .irqs = axp288_regmap_irqs, |
| .num_irqs = ARRAY_SIZE(axp288_regmap_irqs), |
| .num_regs = 6, |
| |
| }; |
| |
| static const char * const axp20x_supplies[] = { |
| "acin", |
| "vin2", |
| "vin3", |
| "ldo24in", |
| "ldo3in", |
| "ldo5in", |
| }; |
| |
| static struct mfd_cell axp20x_cells[] = { |
| { |
| .name = "axp20x-pek", |
| .num_resources = ARRAY_SIZE(axp20x_pek_resources), |
| .resources = axp20x_pek_resources, |
| }, { |
| .name = "axp20x-regulator", |
| .parent_supplies = axp20x_supplies, |
| .num_parent_supplies = ARRAY_SIZE(axp20x_supplies), |
| }, |
| }; |
| |
| static struct resource axp288_adc_resources[] = { |
| { |
| .name = "GPADC", |
| .start = AXP288_IRQ_GPADC, |
| .end = AXP288_IRQ_GPADC, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct resource axp288_charger_resources[] = { |
| { |
| .start = AXP288_IRQ_OV, |
| .end = AXP288_IRQ_OV, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_DONE, |
| .end = AXP288_IRQ_DONE, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_CHARGING, |
| .end = AXP288_IRQ_CHARGING, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_SAFE_QUIT, |
| .end = AXP288_IRQ_SAFE_QUIT, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_SAFE_ENTER, |
| .end = AXP288_IRQ_SAFE_ENTER, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_QCBTU, |
| .end = AXP288_IRQ_QCBTU, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_CBTU, |
| .end = AXP288_IRQ_CBTU, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_QCBTO, |
| .end = AXP288_IRQ_QCBTO, |
| .flags = IORESOURCE_IRQ, |
| }, |
| { |
| .start = AXP288_IRQ_CBTO, |
| .end = AXP288_IRQ_CBTO, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct mfd_cell axp288_cells[] = { |
| { |
| .name = "axp288_adc", |
| .num_resources = ARRAY_SIZE(axp288_adc_resources), |
| .resources = axp288_adc_resources, |
| }, |
| { |
| .name = "axp288_charger", |
| .num_resources = ARRAY_SIZE(axp288_charger_resources), |
| .resources = axp288_charger_resources, |
| }, |
| { |
| .name = "axp288_battery", |
| .num_resources = ARRAY_SIZE(axp288_battery_resources), |
| .resources = axp288_battery_resources, |
| }, |
| }; |
| |
| static struct axp20x_dev *axp20x_pm_power_off; |
| static void axp20x_power_off(void) |
| { |
| if (axp20x_pm_power_off->variant == AXP288_ID) |
| return; |
| |
| regmap_write(axp20x_pm_power_off->regmap, AXP20X_OFF_CTRL, |
| AXP20X_OFF); |
| } |
| |
| static int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev) |
| { |
| const struct acpi_device_id *acpi_id; |
| const struct of_device_id *of_id; |
| |
| if (dev->of_node) { |
| of_id = of_match_device(axp20x_of_match, dev); |
| if (!of_id) { |
| dev_err(dev, "Unable to match OF ID\n"); |
| return -ENODEV; |
| } |
| axp20x->variant = (long) of_id->data; |
| } else { |
| acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev); |
| if (!acpi_id || !acpi_id->driver_data) { |
| dev_err(dev, "Unable to match ACPI ID and data\n"); |
| return -ENODEV; |
| } |
| axp20x->variant = (long) acpi_id->driver_data; |
| } |
| |
| switch (axp20x->variant) { |
| case AXP202_ID: |
| case AXP209_ID: |
| axp20x->nr_cells = ARRAY_SIZE(axp20x_cells); |
| axp20x->cells = axp20x_cells; |
| axp20x->regmap_cfg = &axp20x_regmap_config; |
| axp20x->regmap_irq_chip = &axp20x_regmap_irq_chip; |
| break; |
| case AXP288_ID: |
| axp20x->cells = axp288_cells; |
| axp20x->nr_cells = ARRAY_SIZE(axp288_cells); |
| axp20x->regmap_cfg = &axp288_regmap_config; |
| axp20x->regmap_irq_chip = &axp288_regmap_irq_chip; |
| break; |
| default: |
| dev_err(dev, "unsupported AXP20X ID %lu\n", axp20x->variant); |
| return -EINVAL; |
| } |
| dev_info(dev, "AXP20x variant %s found\n", |
| axp20x_model_names[axp20x->variant]); |
| |
| return 0; |
| } |
| |
| static int axp20x_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct axp20x_dev *axp20x; |
| int ret; |
| |
| axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL); |
| if (!axp20x) |
| return -ENOMEM; |
| |
| ret = axp20x_match_device(axp20x, &i2c->dev); |
| if (ret) |
| return ret; |
| |
| axp20x->i2c_client = i2c; |
| axp20x->dev = &i2c->dev; |
| dev_set_drvdata(axp20x->dev, axp20x); |
| |
| axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg); |
| if (IS_ERR(axp20x->regmap)) { |
| ret = PTR_ERR(axp20x->regmap); |
| dev_err(&i2c->dev, "regmap init failed: %d\n", ret); |
| return ret; |
| } |
| |
| ret = regmap_add_irq_chip(axp20x->regmap, i2c->irq, |
| IRQF_ONESHOT | IRQF_SHARED, -1, |
| axp20x->regmap_irq_chip, |
| &axp20x->regmap_irqc); |
| if (ret) { |
| dev_err(&i2c->dev, "failed to add irq chip: %d\n", ret); |
| return ret; |
| } |
| |
| ret = mfd_add_devices(axp20x->dev, -1, axp20x->cells, |
| axp20x->nr_cells, NULL, 0, NULL); |
| |
| if (ret) { |
| dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret); |
| regmap_del_irq_chip(i2c->irq, axp20x->regmap_irqc); |
| return ret; |
| } |
| |
| if (!pm_power_off) { |
| axp20x_pm_power_off = axp20x; |
| pm_power_off = axp20x_power_off; |
| } |
| |
| dev_info(&i2c->dev, "AXP20X driver loaded\n"); |
| |
| return 0; |
| } |
| |
| static int axp20x_i2c_remove(struct i2c_client *i2c) |
| { |
| struct axp20x_dev *axp20x = i2c_get_clientdata(i2c); |
| |
| if (axp20x == axp20x_pm_power_off) { |
| axp20x_pm_power_off = NULL; |
| pm_power_off = NULL; |
| } |
| |
| mfd_remove_devices(axp20x->dev); |
| regmap_del_irq_chip(axp20x->i2c_client->irq, axp20x->regmap_irqc); |
| |
| return 0; |
| } |
| |
| static struct i2c_driver axp20x_i2c_driver = { |
| .driver = { |
| .name = "axp20x", |
| .owner = THIS_MODULE, |
| .of_match_table = of_match_ptr(axp20x_of_match), |
| .acpi_match_table = ACPI_PTR(axp20x_acpi_match), |
| }, |
| .probe = axp20x_i2c_probe, |
| .remove = axp20x_i2c_remove, |
| .id_table = axp20x_i2c_id, |
| }; |
| |
| module_i2c_driver(axp20x_i2c_driver); |
| |
| MODULE_DESCRIPTION("PMIC MFD core driver for AXP20X"); |
| MODULE_AUTHOR("Carlo Caione <carlo@caione.org>"); |
| MODULE_LICENSE("GPL"); |