// SPDX-License-Identifier: GPL-2.0 /* * Device access for Crystal Cove PMIC * * Copyright (C) 2012-2014, 2022 Intel Corporation. All rights reserved. * * Author: Yang, Bin * Author: Zhu, Lejun */ #include #include #include #include #include #include #include #include #include #define CRYSTAL_COVE_MAX_REGISTER 0xC6 #define CRYSTAL_COVE_REG_IRQLVL1 0x02 #define CRYSTAL_COVE_REG_MIRQLVL1 0x0E #define CRYSTAL_COVE_IRQ_PWRSRC 0 #define CRYSTAL_COVE_IRQ_THRM 1 #define CRYSTAL_COVE_IRQ_BCU 2 #define CRYSTAL_COVE_IRQ_ADC 3 #define CRYSTAL_COVE_IRQ_CHGR 4 #define CRYSTAL_COVE_IRQ_GPIO 5 #define CRYSTAL_COVE_IRQ_VHDMIOCP 6 static const struct resource pwrsrc_resources[] = { DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_PWRSRC, "PWRSRC"), }; static const struct resource thermal_resources[] = { DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_THRM, "THERMAL"), }; static const struct resource bcu_resources[] = { DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_BCU, "BCU"), }; static const struct resource adc_resources[] = { DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_ADC, "ADC"), }; static const struct resource charger_resources[] = { DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_CHGR, "CHGR"), }; static const struct resource gpio_resources[] = { DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_GPIO, "GPIO"), }; static struct mfd_cell crystal_cove_byt_dev[] = { { .name = "crystal_cove_pwrsrc", .num_resources = ARRAY_SIZE(pwrsrc_resources), .resources = pwrsrc_resources, }, { .name = "crystal_cove_thermal", .num_resources = ARRAY_SIZE(thermal_resources), .resources = thermal_resources, }, { .name = "crystal_cove_bcu", .num_resources = ARRAY_SIZE(bcu_resources), .resources = bcu_resources, }, { .name = "crystal_cove_adc", .num_resources = ARRAY_SIZE(adc_resources), .resources = adc_resources, }, { .name = "crystal_cove_charger", .num_resources = ARRAY_SIZE(charger_resources), .resources = charger_resources, }, { .name = "crystal_cove_gpio", .num_resources = ARRAY_SIZE(gpio_resources), .resources = gpio_resources, }, { .name = "byt_crystal_cove_pmic", }, { .name = "crystal_cove_pwm", }, }; static struct mfd_cell crystal_cove_cht_dev[] = { { .name = "crystal_cove_gpio", .num_resources = ARRAY_SIZE(gpio_resources), .resources = gpio_resources, }, { .name = "cht_crystal_cove_pmic", }, { .name = "crystal_cove_pwm", }, }; static const struct regmap_config crystal_cove_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = CRYSTAL_COVE_MAX_REGISTER, .cache_type = REGCACHE_NONE, }; static const struct regmap_irq crystal_cove_irqs[] = { REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_PWRSRC, 0, BIT(CRYSTAL_COVE_IRQ_PWRSRC)), REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_THRM, 0, BIT(CRYSTAL_COVE_IRQ_THRM)), REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_BCU, 0, BIT(CRYSTAL_COVE_IRQ_BCU)), REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_ADC, 0, BIT(CRYSTAL_COVE_IRQ_ADC)), REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_CHGR, 0, BIT(CRYSTAL_COVE_IRQ_CHGR)), REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_GPIO, 0, BIT(CRYSTAL_COVE_IRQ_GPIO)), REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_VHDMIOCP, 0, BIT(CRYSTAL_COVE_IRQ_VHDMIOCP)), }; static const struct regmap_irq_chip crystal_cove_irq_chip = { .name = "Crystal Cove", .irqs = crystal_cove_irqs, .num_irqs = ARRAY_SIZE(crystal_cove_irqs), .num_regs = 1, .status_base = CRYSTAL_COVE_REG_IRQLVL1, .mask_base = CRYSTAL_COVE_REG_MIRQLVL1, }; /* PWM consumed by the Intel GFX */ static struct pwm_lookup crc_pwm_lookup[] = { PWM_LOOKUP("crystal_cove_pwm", 0, "0000:00:02.0", "pwm_pmic_backlight", 0, PWM_POLARITY_NORMAL), }; struct crystal_cove_config { unsigned long irq_flags; struct mfd_cell *cell_dev; int n_cell_devs; const struct regmap_config *regmap_config; const struct regmap_irq_chip *irq_chip; }; static const struct crystal_cove_config crystal_cove_config_byt_crc = { .irq_flags = IRQF_TRIGGER_RISING, .cell_dev = crystal_cove_byt_dev, .n_cell_devs = ARRAY_SIZE(crystal_cove_byt_dev), .regmap_config = &crystal_cove_regmap_config, .irq_chip = &crystal_cove_irq_chip, }; static const struct crystal_cove_config crystal_cove_config_cht_crc = { .irq_flags = IRQF_TRIGGER_RISING, .cell_dev = crystal_cove_cht_dev, .n_cell_devs = ARRAY_SIZE(crystal_cove_cht_dev), .regmap_config = &crystal_cove_regmap_config, .irq_chip = &crystal_cove_irq_chip, }; static int crystal_cove_i2c_probe(struct i2c_client *i2c) { const struct crystal_cove_config *config; struct device *dev = &i2c->dev; struct intel_soc_pmic *pmic; int ret; if (soc_intel_is_byt()) config = &crystal_cove_config_byt_crc; else config = &crystal_cove_config_cht_crc; pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); if (!pmic) return -ENOMEM; i2c_set_clientdata(i2c, pmic); pmic->regmap = devm_regmap_init_i2c(i2c, config->regmap_config); if (IS_ERR(pmic->regmap)) return PTR_ERR(pmic->regmap); pmic->irq = i2c->irq; ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq, config->irq_flags | IRQF_ONESHOT, 0, config->irq_chip, &pmic->irq_chip_data); if (ret) return ret; ret = enable_irq_wake(pmic->irq); if (ret) dev_warn(dev, "Can't enable IRQ as wake source: %d\n", ret); /* Add lookup table for crc-pwm */ pwm_add_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup)); /* To distuingish this domain from the GPIO/charger's irqchip domains */ irq_domain_update_bus_token(regmap_irq_get_domain(pmic->irq_chip_data), DOMAIN_BUS_NEXUS); ret = mfd_add_devices(dev, PLATFORM_DEVID_NONE, config->cell_dev, config->n_cell_devs, NULL, 0, regmap_irq_get_domain(pmic->irq_chip_data)); if (ret) pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup)); return ret; } static void crystal_cove_i2c_remove(struct i2c_client *i2c) { /* remove crc-pwm lookup table */ pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup)); mfd_remove_devices(&i2c->dev); } static void crystal_cove_shutdown(struct i2c_client *i2c) { struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c); disable_irq(pmic->irq); return; } static int crystal_cove_suspend(struct device *dev) { struct intel_soc_pmic *pmic = dev_get_drvdata(dev); disable_irq(pmic->irq); return 0; } static int crystal_cove_resume(struct device *dev) { struct intel_soc_pmic *pmic = dev_get_drvdata(dev); enable_irq(pmic->irq); return 0; } static DEFINE_SIMPLE_DEV_PM_OPS(crystal_cove_pm_ops, crystal_cove_suspend, crystal_cove_resume); static const struct acpi_device_id crystal_cove_acpi_match[] = { { "INT33FD" }, { }, }; MODULE_DEVICE_TABLE(acpi, crystal_cove_acpi_match); static struct i2c_driver crystal_cove_i2c_driver = { .driver = { .name = "crystal_cove_i2c", .pm = pm_sleep_ptr(&crystal_cove_pm_ops), .acpi_match_table = crystal_cove_acpi_match, }, .probe = crystal_cove_i2c_probe, .remove = crystal_cove_i2c_remove, .shutdown = crystal_cove_shutdown, }; module_i2c_driver(crystal_cove_i2c_driver); MODULE_DESCRIPTION("I2C driver for Intel SoC PMIC"); MODULE_AUTHOR("Yang, Bin "); MODULE_AUTHOR("Zhu, Lejun ");