diff options
Diffstat (limited to 'drivers/mfd/tps6594-core.c')
| -rw-r--r-- | drivers/mfd/tps6594-core.c | 59 |
1 files changed, 57 insertions, 2 deletions
diff --git a/drivers/mfd/tps6594-core.c b/drivers/mfd/tps6594-core.c index c16c37e36617..8b26c4127472 100644 --- a/drivers/mfd/tps6594-core.c +++ b/drivers/mfd/tps6594-core.c @@ -10,16 +10,20 @@ * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/ */ +#include <linux/bitfield.h> #include <linux/completion.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/reboot.h> #include <linux/mfd/core.h> #include <linux/mfd/tps6594.h> #define TPS6594_CRC_SYNC_TIMEOUT_MS 150 +#define TPS65224_EN_SEL_PB 1 +#define TPS65224_GPIO3_SEL_PB 3 /* Completion to synchronize CRC feature enabling on all PMICs */ static DECLARE_COMPLETION(tps6594_crc_comp); @@ -128,6 +132,12 @@ static const struct resource tps6594_rtc_resources[] = { DEFINE_RES_IRQ_NAMED(TPS6594_IRQ_POWER_UP, TPS6594_IRQ_NAME_POWERUP), }; +static const struct resource tps6594_pwrbutton_resources[] = { + DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_PB_FALL, TPS65224_IRQ_NAME_PB_FALL), + DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_PB_RISE, TPS65224_IRQ_NAME_PB_RISE), + DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_PB_SHORT, TPS65224_IRQ_NAME_PB_SHORT), +}; + static const struct mfd_cell tps6594_common_cells[] = { MFD_CELL_RES("tps6594-regulator", tps6594_regulator_resources), MFD_CELL_RES("tps6594-pinctrl", tps6594_pinctrl_resources), @@ -318,8 +328,6 @@ static const struct resource tps65224_pfsm_resources[] = { DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_REG_UNLOCK, TPS65224_IRQ_NAME_REG_UNLOCK), DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_TWARN, TPS65224_IRQ_NAME_TWARN), DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_PB_LONG, TPS65224_IRQ_NAME_PB_LONG), - DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_PB_FALL, TPS65224_IRQ_NAME_PB_FALL), - DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_PB_RISE, TPS65224_IRQ_NAME_PB_RISE), DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_TSD_ORD, TPS65224_IRQ_NAME_TSD_ORD), DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_BIST_FAIL, TPS65224_IRQ_NAME_BIST_FAIL), DEFINE_RES_IRQ_NAMED(TPS65224_IRQ_REG_CRC_ERR, TPS65224_IRQ_NAME_REG_CRC_ERR), @@ -347,6 +355,12 @@ static const struct mfd_cell tps65224_common_cells[] = { MFD_CELL_RES("tps6594-regulator", tps65224_regulator_resources), }; +static const struct mfd_cell tps6594_pwrbutton_cell = { + .name = "tps6594-pwrbutton", + .resources = tps6594_pwrbutton_resources, + .num_resources = ARRAY_SIZE(tps6594_pwrbutton_resources), +}; + static const struct regmap_irq tps65224_irqs[] = { /* INT_BUCK register */ REGMAP_IRQ_REG(TPS65224_IRQ_BUCK1_UVOV, 0, TPS65224_BIT_BUCK1_UVOV_INT), @@ -676,11 +690,25 @@ static int tps6594_enable_crc(struct tps6594 *tps) return ret; } +static int tps6594_power_off_handler(struct sys_off_data *data) +{ + struct tps6594 *tps = data->cb_data; + int ret; + + ret = regmap_update_bits(tps->regmap, TPS6594_REG_FSM_I2C_TRIGGERS, + TPS6594_BIT_TRIGGER_I2C(0), TPS6594_BIT_TRIGGER_I2C(0)); + if (ret) + return notifier_from_errno(ret); + + return NOTIFY_DONE; +} + int tps6594_device_init(struct tps6594 *tps, bool enable_crc) { struct device *dev = tps->dev; int ret; struct regmap_irq_chip *irq_chip; + unsigned int pwr_on, gpio3_cfg; const struct mfd_cell *cells; int n_cells; @@ -727,6 +755,27 @@ int tps6594_device_init(struct tps6594 *tps, bool enable_crc) if (ret) return dev_err_probe(dev, ret, "Failed to add common child devices\n"); + /* If either the PB/EN/VSENSE or GPIO3 is configured as PB, register a driver for it */ + if (tps->chip_id == TPS65224 || tps->chip_id == TPS652G1) { + ret = regmap_read(tps->regmap, TPS6594_REG_NPWRON_CONF, &pwr_on); + if (ret) + return dev_err_probe(dev, ret, "Failed to read PB/EN/VSENSE config\n"); + + ret = regmap_read(tps->regmap, TPS6594_REG_GPIOX_CONF(2), &gpio3_cfg); + if (ret) + return dev_err_probe(dev, ret, "Failed to read GPIO3 config\n"); + + if (FIELD_GET(TPS65224_MASK_EN_PB_VSENSE_CONFIG, pwr_on) == TPS65224_EN_SEL_PB || + FIELD_GET(TPS65224_MASK_GPIO_SEL, gpio3_cfg) == TPS65224_GPIO3_SEL_PB) { + ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, + &tps6594_pwrbutton_cell, 1, NULL, 0, + regmap_irq_get_domain(tps->irq_data)); + if (ret) + return dev_err_probe(dev, ret, + "Failed to add power button device.\n"); + } + } + /* No RTC for LP8764, TPS65224 and TPS652G1 */ if (tps->chip_id != LP8764 && tps->chip_id != TPS65224 && tps->chip_id != TPS652G1) { ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, tps6594_rtc_cells, @@ -736,6 +785,12 @@ int tps6594_device_init(struct tps6594 *tps, bool enable_crc) return dev_err_probe(dev, ret, "Failed to add RTC child device\n"); } + if (of_device_is_system_power_controller(dev->of_node)) { + ret = devm_register_power_off_handler(tps->dev, tps6594_power_off_handler, tps); + if (ret) + return dev_err_probe(dev, ret, "Failed to register power-off handler\n"); + } + return 0; } EXPORT_SYMBOL_GPL(tps6594_device_init); |