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- // SPDX-License-Identifier: GPL-2.0-only
- //
- // Copyright (C) 2019 ROHM Semiconductors
- //
- // ROHM BD71828 PMIC driver
- #include <linux/gpio_keys.h>
- #include <linux/i2c.h>
- #include <linux/input.h>
- #include <linux/interrupt.h>
- #include <linux/ioport.h>
- #include <linux/irq.h>
- #include <linux/mfd/core.h>
- #include <linux/mfd/rohm-bd71828.h>
- #include <linux/module.h>
- #include <linux/of_device.h>
- #include <linux/regmap.h>
- #include <linux/types.h>
- static struct gpio_keys_button button = {
- .code = KEY_POWER,
- .gpio = -1,
- .type = EV_KEY,
- };
- static struct gpio_keys_platform_data bd71828_powerkey_data = {
- .buttons = &button,
- .nbuttons = 1,
- .name = "bd71828-pwrkey",
- };
- static const struct resource rtc_irqs[] = {
- DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd71828-rtc-alm-0"),
- DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd71828-rtc-alm-1"),
- DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC2, "bd71828-rtc-alm-2"),
- };
- static struct mfd_cell bd71828_mfd_cells[] = {
- { .name = "bd71828-pmic", },
- { .name = "bd71828-gpio", },
- { .name = "bd71828-led", .of_compatible = "rohm,bd71828-leds" },
- /*
- * We use BD71837 driver to drive the clock block. Only differences to
- * BD70528 clock gate are the register address and mask.
- */
- { .name = "bd71828-clk", },
- { .name = "bd71827-power", },
- {
- .name = "bd71828-rtc",
- .resources = rtc_irqs,
- .num_resources = ARRAY_SIZE(rtc_irqs),
- }, {
- .name = "gpio-keys",
- .platform_data = &bd71828_powerkey_data,
- .pdata_size = sizeof(bd71828_powerkey_data),
- },
- };
- static const struct regmap_range volatile_ranges[] = {
- {
- .range_min = BD71828_REG_PS_CTRL_1,
- .range_max = BD71828_REG_PS_CTRL_1,
- }, {
- .range_min = BD71828_REG_PS_CTRL_3,
- .range_max = BD71828_REG_PS_CTRL_3,
- }, {
- .range_min = BD71828_REG_RTC_SEC,
- .range_max = BD71828_REG_RTC_YEAR,
- }, {
- /*
- * For now make all charger registers volatile because many
- * needs to be and because the charger block is not that
- * performance critical.
- */
- .range_min = BD71828_REG_CHG_STATE,
- .range_max = BD71828_REG_CHG_FULL,
- }, {
- .range_min = BD71828_REG_INT_MAIN,
- .range_max = BD71828_REG_IO_STAT,
- },
- };
- static const struct regmap_access_table volatile_regs = {
- .yes_ranges = &volatile_ranges[0],
- .n_yes_ranges = ARRAY_SIZE(volatile_ranges),
- };
- static struct regmap_config bd71828_regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .volatile_table = &volatile_regs,
- .max_register = BD71828_MAX_REGISTER,
- .cache_type = REGCACHE_RBTREE,
- };
- /*
- * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
- * access corect sub-IRQ registers based on bits that are set in main IRQ
- * register.
- */
- static unsigned int bit0_offsets[] = {11}; /* RTC IRQ */
- static unsigned int bit1_offsets[] = {10}; /* TEMP IRQ */
- static unsigned int bit2_offsets[] = {6, 7, 8, 9}; /* BAT MON IRQ */
- static unsigned int bit3_offsets[] = {5}; /* BAT IRQ */
- static unsigned int bit4_offsets[] = {4}; /* CHG IRQ */
- static unsigned int bit5_offsets[] = {3}; /* VSYS IRQ */
- static unsigned int bit6_offsets[] = {1, 2}; /* DCIN IRQ */
- static unsigned int bit7_offsets[] = {0}; /* BUCK IRQ */
- static struct regmap_irq_sub_irq_map bd71828_sub_irq_offsets[] = {
- REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
- REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
- REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
- REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets),
- REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets),
- REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets),
- REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets),
- REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
- };
- static struct regmap_irq bd71828_irqs[] = {
- REGMAP_IRQ_REG(BD71828_INT_BUCK1_OCP, 0, BD71828_INT_BUCK1_OCP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BUCK2_OCP, 0, BD71828_INT_BUCK2_OCP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BUCK3_OCP, 0, BD71828_INT_BUCK3_OCP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BUCK4_OCP, 0, BD71828_INT_BUCK4_OCP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BUCK5_OCP, 0, BD71828_INT_BUCK5_OCP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BUCK6_OCP, 0, BD71828_INT_BUCK6_OCP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BUCK7_OCP, 0, BD71828_INT_BUCK7_OCP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_PGFAULT, 0, BD71828_INT_PGFAULT_MASK),
- /* DCIN1 interrupts */
- REGMAP_IRQ_REG(BD71828_INT_DCIN_DET, 1, BD71828_INT_DCIN_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_DCIN_RMV, 1, BD71828_INT_DCIN_RMV_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CLPS_OUT, 1, BD71828_INT_CLPS_OUT_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CLPS_IN, 1, BD71828_INT_CLPS_IN_MASK),
- /* DCIN2 interrupts */
- REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_RES, 2,
- BD71828_INT_DCIN_MON_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_DET, 2,
- BD71828_INT_DCIN_MON_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_LONGPUSH, 2, BD71828_INT_LONGPUSH_MASK),
- REGMAP_IRQ_REG(BD71828_INT_MIDPUSH, 2, BD71828_INT_MIDPUSH_MASK),
- REGMAP_IRQ_REG(BD71828_INT_SHORTPUSH, 2, BD71828_INT_SHORTPUSH_MASK),
- REGMAP_IRQ_REG(BD71828_INT_PUSH, 2, BD71828_INT_PUSH_MASK),
- REGMAP_IRQ_REG(BD71828_INT_WDOG, 2, BD71828_INT_WDOG_MASK),
- REGMAP_IRQ_REG(BD71828_INT_SWRESET, 2, BD71828_INT_SWRESET_MASK),
- /* Vsys */
- REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_RES, 3,
- BD71828_INT_VSYS_UV_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_DET, 3,
- BD71828_INT_VSYS_UV_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_RES, 3,
- BD71828_INT_VSYS_LOW_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_DET, 3,
- BD71828_INT_VSYS_LOW_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_IN, 3,
- BD71828_INT_VSYS_HALL_IN_MASK),
- REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_TOGGLE, 3,
- BD71828_INT_VSYS_HALL_TOGGLE_MASK),
- REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_RES, 3,
- BD71828_INT_VSYS_MON_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_DET, 3,
- BD71828_INT_VSYS_MON_DET_MASK),
- /* Charger */
- REGMAP_IRQ_REG(BD71828_INT_CHG_DCIN_ILIM, 4,
- BD71828_INT_CHG_DCIN_ILIM_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CHG_TOPOFF_TO_DONE, 4,
- BD71828_INT_CHG_TOPOFF_TO_DONE_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TEMP, 4,
- BD71828_INT_CHG_WDG_TEMP_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TIME, 4,
- BD71828_INT_CHG_WDG_TIME_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_RES, 4,
- BD71828_INT_CHG_RECHARGE_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_DET, 4,
- BD71828_INT_CHG_RECHARGE_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CHG_RANGED_TEMP_TRANSITION, 4,
- BD71828_INT_CHG_RANGED_TEMP_TRANSITION_MASK),
- REGMAP_IRQ_REG(BD71828_INT_CHG_STATE_TRANSITION, 4,
- BD71828_INT_CHG_STATE_TRANSITION_MASK),
- /* Battery */
- REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_NORMAL, 5,
- BD71828_INT_BAT_TEMP_NORMAL_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_ERANGE, 5,
- BD71828_INT_BAT_TEMP_ERANGE_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_WARN, 5,
- BD71828_INT_BAT_TEMP_WARN_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_REMOVED, 5,
- BD71828_INT_BAT_REMOVED_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_DETECTED, 5,
- BD71828_INT_BAT_DETECTED_MASK),
- REGMAP_IRQ_REG(BD71828_INT_THERM_REMOVED, 5,
- BD71828_INT_THERM_REMOVED_MASK),
- REGMAP_IRQ_REG(BD71828_INT_THERM_DETECTED, 5,
- BD71828_INT_THERM_DETECTED_MASK),
- /* Battery Mon 1 */
- REGMAP_IRQ_REG(BD71828_INT_BAT_DEAD, 6, BD71828_INT_BAT_DEAD_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_RES, 6,
- BD71828_INT_BAT_SHORTC_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_DET, 6,
- BD71828_INT_BAT_SHORTC_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_RES, 6,
- BD71828_INT_BAT_LOW_VOLT_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_DET, 6,
- BD71828_INT_BAT_LOW_VOLT_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_RES, 6,
- BD71828_INT_BAT_OVER_VOLT_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_DET, 6,
- BD71828_INT_BAT_OVER_VOLT_DET_MASK),
- /* Battery Mon 2 */
- REGMAP_IRQ_REG(BD71828_INT_BAT_MON_RES, 7,
- BD71828_INT_BAT_MON_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_MON_DET, 7,
- BD71828_INT_BAT_MON_DET_MASK),
- /* Battery Mon 3 (Coulomb counter) */
- REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON1, 8,
- BD71828_INT_BAT_CC_MON1_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON2, 8,
- BD71828_INT_BAT_CC_MON2_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON3, 8,
- BD71828_INT_BAT_CC_MON3_MASK),
- /* Battery Mon 4 */
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_RES, 9,
- BD71828_INT_BAT_OVER_CURR_1_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_DET, 9,
- BD71828_INT_BAT_OVER_CURR_1_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_RES, 9,
- BD71828_INT_BAT_OVER_CURR_2_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_DET, 9,
- BD71828_INT_BAT_OVER_CURR_2_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_RES, 9,
- BD71828_INT_BAT_OVER_CURR_3_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_DET, 9,
- BD71828_INT_BAT_OVER_CURR_3_DET_MASK),
- /* Temperature */
- REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_RES, 10,
- BD71828_INT_TEMP_BAT_LOW_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_DET, 10,
- BD71828_INT_TEMP_BAT_LOW_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_RES, 10,
- BD71828_INT_TEMP_BAT_HI_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_DET, 10,
- BD71828_INT_TEMP_BAT_HI_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_RES, 10,
- BD71828_INT_TEMP_CHIP_OVER_125_RES_MASK),
- REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_DET, 10,
- BD71828_INT_TEMP_CHIP_OVER_125_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_VF_DET, 10,
- BD71828_INT_TEMP_CHIP_OVER_VF_DET_MASK),
- REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_VF_RES, 10,
- BD71828_INT_TEMP_CHIP_OVER_VF_RES_MASK),
- /* RTC Alarm */
- REGMAP_IRQ_REG(BD71828_INT_RTC0, 11, BD71828_INT_RTC0_MASK),
- REGMAP_IRQ_REG(BD71828_INT_RTC1, 11, BD71828_INT_RTC1_MASK),
- REGMAP_IRQ_REG(BD71828_INT_RTC2, 11, BD71828_INT_RTC2_MASK),
- };
- static struct regmap_irq_chip bd71828_irq_chip = {
- .name = "bd71828_irq",
- .main_status = BD71828_REG_INT_MAIN,
- .irqs = &bd71828_irqs[0],
- .num_irqs = ARRAY_SIZE(bd71828_irqs),
- .status_base = BD71828_REG_INT_BUCK,
- .mask_base = BD71828_REG_INT_MASK_BUCK,
- .ack_base = BD71828_REG_INT_BUCK,
- .mask_invert = true,
- .init_ack_masked = true,
- .num_regs = 12,
- .num_main_regs = 1,
- .sub_reg_offsets = &bd71828_sub_irq_offsets[0],
- .num_main_status_bits = 8,
- .irq_reg_stride = 1,
- };
- static int bd71828_i2c_probe(struct i2c_client *i2c)
- {
- struct rohm_regmap_dev *chip;
- struct regmap_irq_chip_data *irq_data;
- int ret;
- if (!i2c->irq) {
- dev_err(&i2c->dev, "No IRQ configured\n");
- return -EINVAL;
- }
- chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
- dev_set_drvdata(&i2c->dev, chip);
- chip->regmap = devm_regmap_init_i2c(i2c, &bd71828_regmap);
- if (IS_ERR(chip->regmap)) {
- dev_err(&i2c->dev, "Failed to initialize Regmap\n");
- return PTR_ERR(chip->regmap);
- }
- ret = devm_regmap_add_irq_chip(&i2c->dev, chip->regmap,
- i2c->irq, IRQF_ONESHOT, 0,
- &bd71828_irq_chip, &irq_data);
- if (ret) {
- dev_err(&i2c->dev, "Failed to add IRQ chip\n");
- return ret;
- }
- dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
- bd71828_irq_chip.num_irqs);
- ret = regmap_irq_get_virq(irq_data, BD71828_INT_SHORTPUSH);
- if (ret < 0) {
- dev_err(&i2c->dev, "Failed to get the power-key IRQ\n");
- return ret;
- }
- button.irq = ret;
- ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
- bd71828_mfd_cells,
- ARRAY_SIZE(bd71828_mfd_cells), NULL, 0,
- regmap_irq_get_domain(irq_data));
- if (ret)
- dev_err(&i2c->dev, "Failed to create subdevices\n");
- return ret;
- }
- static const struct of_device_id bd71828_of_match[] = {
- { .compatible = "rohm,bd71828", },
- { },
- };
- MODULE_DEVICE_TABLE(of, bd71828_of_match);
- static struct i2c_driver bd71828_drv = {
- .driver = {
- .name = "rohm-bd71828",
- .of_match_table = bd71828_of_match,
- },
- .probe_new = &bd71828_i2c_probe,
- };
- module_i2c_driver(bd71828_drv);
- MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
- MODULE_DESCRIPTION("ROHM BD71828 Power Management IC driver");
- MODULE_LICENSE("GPL");
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