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181 lines
4.5 KiB
181 lines
4.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Device access for Dollar Cove TI PMIC |
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* |
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* Copyright (c) 2014, Intel Corporation. |
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* Author: Ramakrishna Pallala <[email protected]> |
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* |
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* Cleanup and forward-ported |
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* Copyright (c) 2017 Takashi Iwai <[email protected]> |
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*/ |
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#include <linux/acpi.h> |
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#include <linux/interrupt.h> |
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#include <linux/i2c.h> |
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#include <linux/mfd/core.h> |
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#include <linux/mfd/intel_soc_pmic.h> |
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#include <linux/module.h> |
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#include <linux/regmap.h> |
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#define CHTDC_TI_IRQLVL1 0x01 |
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#define CHTDC_TI_MASK_IRQLVL1 0x02 |
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/* Level 1 IRQs */ |
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enum { |
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CHTDC_TI_PWRBTN = 0, /* power button */ |
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CHTDC_TI_DIETMPWARN, /* thermal */ |
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CHTDC_TI_ADCCMPL, /* ADC */ |
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/* No IRQ 3 */ |
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CHTDC_TI_VBATLOW = 4, /* battery */ |
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CHTDC_TI_VBUSDET, /* power source */ |
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/* No IRQ 6 */ |
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CHTDC_TI_CCEOCAL = 7, /* battery */ |
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}; |
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static const struct resource power_button_resources[] = { |
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DEFINE_RES_IRQ(CHTDC_TI_PWRBTN), |
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}; |
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static const struct resource thermal_resources[] = { |
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DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN), |
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}; |
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static const struct resource adc_resources[] = { |
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DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL), |
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}; |
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static const struct resource pwrsrc_resources[] = { |
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DEFINE_RES_IRQ(CHTDC_TI_VBUSDET), |
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}; |
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static const struct resource battery_resources[] = { |
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DEFINE_RES_IRQ(CHTDC_TI_VBATLOW), |
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DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL), |
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}; |
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static struct mfd_cell chtdc_ti_dev[] = { |
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{ |
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.name = "chtdc_ti_pwrbtn", |
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.num_resources = ARRAY_SIZE(power_button_resources), |
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.resources = power_button_resources, |
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}, { |
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.name = "chtdc_ti_adc", |
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.num_resources = ARRAY_SIZE(adc_resources), |
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.resources = adc_resources, |
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}, { |
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.name = "chtdc_ti_thermal", |
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.num_resources = ARRAY_SIZE(thermal_resources), |
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.resources = thermal_resources, |
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}, { |
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.name = "chtdc_ti_pwrsrc", |
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.num_resources = ARRAY_SIZE(pwrsrc_resources), |
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.resources = pwrsrc_resources, |
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}, { |
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.name = "chtdc_ti_battery", |
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.num_resources = ARRAY_SIZE(battery_resources), |
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.resources = battery_resources, |
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}, |
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{ .name = "chtdc_ti_region", }, |
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}; |
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static const struct regmap_config chtdc_ti_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = 128, |
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.cache_type = REGCACHE_NONE, |
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}; |
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static const struct regmap_irq chtdc_ti_irqs[] = { |
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REGMAP_IRQ_REG(CHTDC_TI_PWRBTN, 0, BIT(CHTDC_TI_PWRBTN)), |
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REGMAP_IRQ_REG(CHTDC_TI_DIETMPWARN, 0, BIT(CHTDC_TI_DIETMPWARN)), |
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REGMAP_IRQ_REG(CHTDC_TI_ADCCMPL, 0, BIT(CHTDC_TI_ADCCMPL)), |
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REGMAP_IRQ_REG(CHTDC_TI_VBATLOW, 0, BIT(CHTDC_TI_VBATLOW)), |
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REGMAP_IRQ_REG(CHTDC_TI_VBUSDET, 0, BIT(CHTDC_TI_VBUSDET)), |
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REGMAP_IRQ_REG(CHTDC_TI_CCEOCAL, 0, BIT(CHTDC_TI_CCEOCAL)), |
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}; |
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static const struct regmap_irq_chip chtdc_ti_irq_chip = { |
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.name = KBUILD_MODNAME, |
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.irqs = chtdc_ti_irqs, |
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.num_irqs = ARRAY_SIZE(chtdc_ti_irqs), |
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.num_regs = 1, |
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.status_base = CHTDC_TI_IRQLVL1, |
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.mask_base = CHTDC_TI_MASK_IRQLVL1, |
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.ack_base = CHTDC_TI_IRQLVL1, |
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}; |
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static int chtdc_ti_probe(struct i2c_client *i2c) |
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{ |
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struct device *dev = &i2c->dev; |
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struct intel_soc_pmic *pmic; |
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int ret; |
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pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); |
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if (!pmic) |
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return -ENOMEM; |
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i2c_set_clientdata(i2c, pmic); |
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pmic->regmap = devm_regmap_init_i2c(i2c, &chtdc_ti_regmap_config); |
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if (IS_ERR(pmic->regmap)) |
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return PTR_ERR(pmic->regmap); |
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pmic->irq = i2c->irq; |
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ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq, |
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IRQF_ONESHOT, 0, |
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&chtdc_ti_irq_chip, |
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&pmic->irq_chip_data); |
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if (ret) |
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return ret; |
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return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, chtdc_ti_dev, |
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ARRAY_SIZE(chtdc_ti_dev), NULL, 0, |
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regmap_irq_get_domain(pmic->irq_chip_data)); |
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} |
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static void chtdc_ti_shutdown(struct i2c_client *i2c) |
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{ |
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struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c); |
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disable_irq(pmic->irq); |
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} |
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static int __maybe_unused chtdc_ti_suspend(struct device *dev) |
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{ |
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struct intel_soc_pmic *pmic = dev_get_drvdata(dev); |
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disable_irq(pmic->irq); |
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return 0; |
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} |
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static int __maybe_unused chtdc_ti_resume(struct device *dev) |
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{ |
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struct intel_soc_pmic *pmic = dev_get_drvdata(dev); |
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enable_irq(pmic->irq); |
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return 0; |
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} |
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static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume); |
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static const struct acpi_device_id chtdc_ti_acpi_ids[] = { |
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{ "INT33F5" }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids); |
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static struct i2c_driver chtdc_ti_i2c_driver = { |
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.driver = { |
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.name = "intel_soc_pmic_chtdc_ti", |
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.pm = &chtdc_ti_pm_ops, |
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.acpi_match_table = chtdc_ti_acpi_ids, |
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}, |
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.probe_new = chtdc_ti_probe, |
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.shutdown = chtdc_ti_shutdown, |
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}; |
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module_i2c_driver(chtdc_ti_i2c_driver); |
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MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC"); |
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MODULE_LICENSE("GPL v2");
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