182 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Device access for Dollar Cove TI PMIC4 *5 * Copyright (c) 2014, Intel Corporation.6 * Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com>7 *8 * Cleanup and forward-ported9 * Copyright (c) 2017 Takashi Iwai <tiwai@suse.de>10 */11 12#include <linux/acpi.h>13#include <linux/interrupt.h>14#include <linux/i2c.h>15#include <linux/mfd/core.h>16#include <linux/mfd/intel_soc_pmic.h>17#include <linux/module.h>18#include <linux/regmap.h>19 20#define CHTDC_TI_IRQLVL1 0x0121#define CHTDC_TI_MASK_IRQLVL1 0x0222 23/* Level 1 IRQs */24enum {25 CHTDC_TI_PWRBTN = 0, /* power button */26 CHTDC_TI_DIETMPWARN, /* thermal */27 CHTDC_TI_ADCCMPL, /* ADC */28 /* No IRQ 3 */29 CHTDC_TI_VBATLOW = 4, /* battery */30 CHTDC_TI_VBUSDET, /* power source */31 /* No IRQ 6 */32 CHTDC_TI_CCEOCAL = 7, /* battery */33};34 35static const struct resource power_button_resources[] = {36 DEFINE_RES_IRQ(CHTDC_TI_PWRBTN),37};38 39static const struct resource thermal_resources[] = {40 DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN),41};42 43static const struct resource adc_resources[] = {44 DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL),45};46 47static const struct resource pwrsrc_resources[] = {48 DEFINE_RES_IRQ(CHTDC_TI_VBUSDET),49};50 51static const struct resource battery_resources[] = {52 DEFINE_RES_IRQ(CHTDC_TI_VBATLOW),53 DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL),54};55 56static struct mfd_cell chtdc_ti_dev[] = {57 {58 .name = "chtdc_ti_pwrbtn",59 .num_resources = ARRAY_SIZE(power_button_resources),60 .resources = power_button_resources,61 }, {62 .name = "chtdc_ti_adc",63 .num_resources = ARRAY_SIZE(adc_resources),64 .resources = adc_resources,65 }, {66 .name = "chtdc_ti_thermal",67 .num_resources = ARRAY_SIZE(thermal_resources),68 .resources = thermal_resources,69 }, {70 .name = "chtdc_ti_pwrsrc",71 .num_resources = ARRAY_SIZE(pwrsrc_resources),72 .resources = pwrsrc_resources,73 }, {74 .name = "chtdc_ti_battery",75 .num_resources = ARRAY_SIZE(battery_resources),76 .resources = battery_resources,77 },78 { .name = "chtdc_ti_region", },79};80 81static const struct regmap_config chtdc_ti_regmap_config = {82 .reg_bits = 8,83 .val_bits = 8,84 .max_register = 128,85 .cache_type = REGCACHE_NONE,86};87 88static const struct regmap_irq chtdc_ti_irqs[] = {89 REGMAP_IRQ_REG(CHTDC_TI_PWRBTN, 0, BIT(CHTDC_TI_PWRBTN)),90 REGMAP_IRQ_REG(CHTDC_TI_DIETMPWARN, 0, BIT(CHTDC_TI_DIETMPWARN)),91 REGMAP_IRQ_REG(CHTDC_TI_ADCCMPL, 0, BIT(CHTDC_TI_ADCCMPL)),92 REGMAP_IRQ_REG(CHTDC_TI_VBATLOW, 0, BIT(CHTDC_TI_VBATLOW)),93 REGMAP_IRQ_REG(CHTDC_TI_VBUSDET, 0, BIT(CHTDC_TI_VBUSDET)),94 REGMAP_IRQ_REG(CHTDC_TI_CCEOCAL, 0, BIT(CHTDC_TI_CCEOCAL)),95};96 97static const struct regmap_irq_chip chtdc_ti_irq_chip = {98 .name = KBUILD_MODNAME,99 .irqs = chtdc_ti_irqs,100 .num_irqs = ARRAY_SIZE(chtdc_ti_irqs),101 .num_regs = 1,102 .status_base = CHTDC_TI_IRQLVL1,103 .mask_base = CHTDC_TI_MASK_IRQLVL1,104 .ack_base = CHTDC_TI_IRQLVL1,105};106 107static int chtdc_ti_probe(struct i2c_client *i2c)108{109 struct device *dev = &i2c->dev;110 struct intel_soc_pmic *pmic;111 int ret;112 113 pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);114 if (!pmic)115 return -ENOMEM;116 117 i2c_set_clientdata(i2c, pmic);118 119 pmic->regmap = devm_regmap_init_i2c(i2c, &chtdc_ti_regmap_config);120 if (IS_ERR(pmic->regmap))121 return PTR_ERR(pmic->regmap);122 pmic->irq = i2c->irq;123 124 ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq,125 IRQF_ONESHOT, 0,126 &chtdc_ti_irq_chip,127 &pmic->irq_chip_data);128 if (ret)129 return ret;130 131 return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, chtdc_ti_dev,132 ARRAY_SIZE(chtdc_ti_dev), NULL, 0,133 regmap_irq_get_domain(pmic->irq_chip_data));134}135 136static void chtdc_ti_shutdown(struct i2c_client *i2c)137{138 struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c);139 140 disable_irq(pmic->irq);141}142 143static int chtdc_ti_suspend(struct device *dev)144{145 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);146 147 disable_irq(pmic->irq);148 149 return 0;150}151 152static int chtdc_ti_resume(struct device *dev)153{154 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);155 156 enable_irq(pmic->irq);157 158 return 0;159}160 161static DEFINE_SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume);162 163static const struct acpi_device_id chtdc_ti_acpi_ids[] = {164 { "INT33F5" },165 { },166};167MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids);168 169static struct i2c_driver chtdc_ti_i2c_driver = {170 .driver = {171 .name = "intel_soc_pmic_chtdc_ti",172 .pm = pm_sleep_ptr(&chtdc_ti_pm_ops),173 .acpi_match_table = chtdc_ti_acpi_ids,174 },175 .probe = chtdc_ti_probe,176 .shutdown = chtdc_ti_shutdown,177};178module_i2c_driver(chtdc_ti_i2c_driver);179 180MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC");181MODULE_LICENSE("GPL v2");182