// SPDX-License-Identifier: GPL-2.0 /* * Intel SoC PMIC MFD Driver * * Copyright (C) 2013, 2014 Intel Corporation. All rights reserved. * * Author: Yang, Bin <bin.yang@intel.com> * Author: Zhu, Lejun <lejun.zhu@linux.intel.com> */ #include <linux/acpi.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/mfd/core.h> #include <linux/mfd/intel_soc_pmic.h> #include <linux/platform_data/x86/soc.h> #include <linux/pwm.h> #include <linux/regmap.h> #include "intel_soc_pmic_core.h" /* 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), }; static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *i2c_id) { struct device *dev = &i2c->dev; struct intel_soc_pmic_config *config; struct intel_soc_pmic *pmic; int ret; if (soc_intel_is_byt()) config = &intel_soc_pmic_config_byt_crc; else config = &intel_soc_pmic_config_cht_crc; pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); if (!pmic) return -ENOMEM; dev_set_drvdata(dev, 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 = regmap_add_irq_chip(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, -1, config->cell_dev, config->n_cell_devs, NULL, 0, regmap_irq_get_domain(pmic->irq_chip_data)); if (ret) goto err_del_irq_chip; return 0; err_del_irq_chip: regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data); return ret; } static int intel_soc_pmic_i2c_remove(struct i2c_client *i2c) { struct intel_soc_pmic *pmic = dev_get_drvdata(&i2c->dev); regmap_del_irq_chip(pmic->irq, pmic->irq_chip_data); /* remove crc-pwm lookup table */ pwm_remove_table(crc_pwm_lookup, ARRAY_SIZE(crc_pwm_lookup)); mfd_remove_devices(&i2c->dev); return 0; } static void intel_soc_pmic_shutdown(struct i2c_client *i2c) { struct intel_soc_pmic *pmic = dev_get_drvdata(&i2c->dev); disable_irq(pmic->irq); return; } #if defined(CONFIG_PM_SLEEP) static int intel_soc_pmic_suspend(struct device *dev) { struct intel_soc_pmic *pmic = dev_get_drvdata(dev); disable_irq(pmic->irq); return 0; } static int intel_soc_pmic_resume(struct device *dev) { struct intel_soc_pmic *pmic = dev_get_drvdata(dev); enable_irq(pmic->irq); return 0; } #endif static SIMPLE_DEV_PM_OPS(intel_soc_pmic_pm_ops, intel_soc_pmic_suspend, intel_soc_pmic_resume); static const struct i2c_device_id intel_soc_pmic_i2c_id[] = { { } }; MODULE_DEVICE_TABLE(i2c, intel_soc_pmic_i2c_id); #if defined(CONFIG_ACPI) static const struct acpi_device_id intel_soc_pmic_acpi_match[] = { { "INT33FD" }, { }, }; MODULE_DEVICE_TABLE(acpi, intel_soc_pmic_acpi_match); #endif static struct i2c_driver intel_soc_pmic_i2c_driver = { .driver = { .name = "intel_soc_pmic_i2c", .pm = &intel_soc_pmic_pm_ops, .acpi_match_table = ACPI_PTR(intel_soc_pmic_acpi_match), }, .probe = intel_soc_pmic_i2c_probe, .remove = intel_soc_pmic_i2c_remove, .id_table = intel_soc_pmic_i2c_id, .shutdown = intel_soc_pmic_shutdown, }; module_i2c_driver(intel_soc_pmic_i2c_driver); MODULE_DESCRIPTION("I2C driver for Intel SoC PMIC"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Yang, Bin <bin.yang@intel.com>"); MODULE_AUTHOR("Zhu, Lejun <lejun.zhu@linux.intel.com>");