/* * Device access for Dollar Cove TI PMIC * * Copyright (c) 2014, Intel Corporation. * Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com> * * Cleanup and forward-ported * Copyright (c) 2017 Takashi Iwai <tiwai@suse.de> * * 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/acpi.h> #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/mfd/core.h> #include <linux/mfd/intel_soc_pmic.h> #include <linux/module.h> #include <linux/regmap.h> #define CHTDC_TI_IRQLVL1 0x01 #define CHTDC_TI_MASK_IRQLVL1 0x02 /* Level 1 IRQs */ enum { CHTDC_TI_PWRBTN = 0, /* power button */ CHTDC_TI_DIETMPWARN, /* thermal */ CHTDC_TI_ADCCMPL, /* ADC */ /* No IRQ 3 */ CHTDC_TI_VBATLOW = 4, /* battery */ CHTDC_TI_VBUSDET, /* power source */ /* No IRQ 6 */ CHTDC_TI_CCEOCAL = 7, /* battery */ }; static struct resource power_button_resources[] = { DEFINE_RES_IRQ(CHTDC_TI_PWRBTN), }; static struct resource thermal_resources[] = { DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN), }; static struct resource adc_resources[] = { DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL), }; static struct resource pwrsrc_resources[] = { DEFINE_RES_IRQ(CHTDC_TI_VBUSDET), }; static struct resource battery_resources[] = { DEFINE_RES_IRQ(CHTDC_TI_VBATLOW), DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL), }; static struct mfd_cell chtdc_ti_dev[] = { { .name = "chtdc_ti_pwrbtn", .num_resources = ARRAY_SIZE(power_button_resources), .resources = power_button_resources, }, { .name = "chtdc_ti_adc", .num_resources = ARRAY_SIZE(adc_resources), .resources = adc_resources, }, { .name = "chtdc_ti_thermal", .num_resources = ARRAY_SIZE(thermal_resources), .resources = thermal_resources, }, { .name = "chtdc_ti_pwrsrc", .num_resources = ARRAY_SIZE(pwrsrc_resources), .resources = pwrsrc_resources, }, { .name = "chtdc_ti_battery", .num_resources = ARRAY_SIZE(battery_resources), .resources = battery_resources, }, { .name = "chtdc_ti_region", }, }; static const struct regmap_config chtdc_ti_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 128, .cache_type = REGCACHE_NONE, }; static const struct regmap_irq chtdc_ti_irqs[] = { REGMAP_IRQ_REG(CHTDC_TI_PWRBTN, 0, BIT(CHTDC_TI_PWRBTN)), REGMAP_IRQ_REG(CHTDC_TI_DIETMPWARN, 0, BIT(CHTDC_TI_DIETMPWARN)), REGMAP_IRQ_REG(CHTDC_TI_ADCCMPL, 0, BIT(CHTDC_TI_ADCCMPL)), REGMAP_IRQ_REG(CHTDC_TI_VBATLOW, 0, BIT(CHTDC_TI_VBATLOW)), REGMAP_IRQ_REG(CHTDC_TI_VBUSDET, 0, BIT(CHTDC_TI_VBUSDET)), REGMAP_IRQ_REG(CHTDC_TI_CCEOCAL, 0, BIT(CHTDC_TI_CCEOCAL)), }; static const struct regmap_irq_chip chtdc_ti_irq_chip = { .name = KBUILD_MODNAME, .irqs = chtdc_ti_irqs, .num_irqs = ARRAY_SIZE(chtdc_ti_irqs), .num_regs = 1, .status_base = CHTDC_TI_IRQLVL1, .mask_base = CHTDC_TI_MASK_IRQLVL1, .ack_base = CHTDC_TI_IRQLVL1, }; static int chtdc_ti_probe(struct i2c_client *i2c) { struct device *dev = &i2c->dev; struct intel_soc_pmic *pmic; int ret; pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); if (!pmic) return -ENOMEM; i2c_set_clientdata(i2c, pmic); pmic->regmap = devm_regmap_init_i2c(i2c, &chtdc_ti_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, IRQF_ONESHOT, 0, &chtdc_ti_irq_chip, &pmic->irq_chip_data); if (ret) return ret; return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, chtdc_ti_dev, ARRAY_SIZE(chtdc_ti_dev), NULL, 0, regmap_irq_get_domain(pmic->irq_chip_data)); } static void chtdc_ti_shutdown(struct i2c_client *i2c) { struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c); disable_irq(pmic->irq); } static int __maybe_unused chtdc_ti_suspend(struct device *dev) { struct intel_soc_pmic *pmic = dev_get_drvdata(dev); disable_irq(pmic->irq); return 0; } static int __maybe_unused chtdc_ti_resume(struct device *dev) { struct intel_soc_pmic *pmic = dev_get_drvdata(dev); enable_irq(pmic->irq); return 0; } static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume); static const struct acpi_device_id chtdc_ti_acpi_ids[] = { { "INT33F5" }, { }, }; MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids); static struct i2c_driver chtdc_ti_i2c_driver = { .driver = { .name = "intel_soc_pmic_chtdc_ti", .pm = &chtdc_ti_pm_ops, .acpi_match_table = chtdc_ti_acpi_ids, }, .probe_new = chtdc_ti_probe, .shutdown = chtdc_ti_shutdown, }; module_i2c_driver(chtdc_ti_i2c_driver); MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC"); MODULE_LICENSE("GPL v2");