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378 lines
10 KiB
378 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// max77693.c - mfd core driver for the MAX 77693 |
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// |
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// Copyright (C) 2012 Samsung Electronics |
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// SangYoung Son <[email protected]> |
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// |
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// This program is not provided / owned by Maxim Integrated Products. |
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// |
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// This driver is based on max8997.c |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/i2c.h> |
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#include <linux/err.h> |
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#include <linux/interrupt.h> |
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#include <linux/of.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/mutex.h> |
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#include <linux/mfd/core.h> |
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#include <linux/mfd/max77693.h> |
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#include <linux/mfd/max77693-common.h> |
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#include <linux/mfd/max77693-private.h> |
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#include <linux/regulator/machine.h> |
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#include <linux/regmap.h> |
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#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */ |
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#define I2C_ADDR_MUIC (0x4A >> 1) |
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#define I2C_ADDR_HAPTIC (0x90 >> 1) |
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static const struct mfd_cell max77693_devs[] = { |
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{ .name = "max77693-pmic", }, |
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{ |
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.name = "max77693-charger", |
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.of_compatible = "maxim,max77693-charger", |
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}, |
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{ |
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.name = "max77693-muic", |
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.of_compatible = "maxim,max77693-muic", |
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}, |
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{ |
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.name = "max77693-haptic", |
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.of_compatible = "maxim,max77693-haptic", |
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}, |
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{ |
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.name = "max77693-led", |
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.of_compatible = "maxim,max77693-led", |
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}, |
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}; |
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static const struct regmap_config max77693_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = MAX77693_PMIC_REG_END, |
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}; |
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static const struct regmap_irq max77693_led_irqs[] = { |
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{ .mask = LED_IRQ_FLED2_OPEN, }, |
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{ .mask = LED_IRQ_FLED2_SHORT, }, |
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{ .mask = LED_IRQ_FLED1_OPEN, }, |
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{ .mask = LED_IRQ_FLED1_SHORT, }, |
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{ .mask = LED_IRQ_MAX_FLASH, }, |
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}; |
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static const struct regmap_irq_chip max77693_led_irq_chip = { |
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.name = "max77693-led", |
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.status_base = MAX77693_LED_REG_FLASH_INT, |
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.mask_base = MAX77693_LED_REG_FLASH_INT_MASK, |
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.mask_invert = false, |
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.num_regs = 1, |
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.irqs = max77693_led_irqs, |
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.num_irqs = ARRAY_SIZE(max77693_led_irqs), |
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}; |
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static const struct regmap_irq max77693_topsys_irqs[] = { |
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{ .mask = TOPSYS_IRQ_T120C_INT, }, |
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{ .mask = TOPSYS_IRQ_T140C_INT, }, |
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{ .mask = TOPSYS_IRQ_LOWSYS_INT, }, |
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}; |
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static const struct regmap_irq_chip max77693_topsys_irq_chip = { |
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.name = "max77693-topsys", |
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.status_base = MAX77693_PMIC_REG_TOPSYS_INT, |
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.mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK, |
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.mask_invert = false, |
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.num_regs = 1, |
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.irqs = max77693_topsys_irqs, |
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.num_irqs = ARRAY_SIZE(max77693_topsys_irqs), |
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}; |
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static const struct regmap_irq max77693_charger_irqs[] = { |
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{ .mask = CHG_IRQ_BYP_I, }, |
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{ .mask = CHG_IRQ_THM_I, }, |
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{ .mask = CHG_IRQ_BAT_I, }, |
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{ .mask = CHG_IRQ_CHG_I, }, |
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{ .mask = CHG_IRQ_CHGIN_I, }, |
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}; |
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static const struct regmap_irq_chip max77693_charger_irq_chip = { |
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.name = "max77693-charger", |
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.status_base = MAX77693_CHG_REG_CHG_INT, |
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.mask_base = MAX77693_CHG_REG_CHG_INT_MASK, |
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.mask_invert = false, |
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.num_regs = 1, |
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.irqs = max77693_charger_irqs, |
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.num_irqs = ARRAY_SIZE(max77693_charger_irqs), |
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}; |
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static const struct regmap_config max77693_regmap_muic_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = MAX77693_MUIC_REG_END, |
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}; |
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static const struct regmap_irq max77693_muic_irqs[] = { |
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, }, |
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, }, |
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, }, |
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{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, }, |
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, }, |
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, }, |
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, }, |
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, }, |
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, }, |
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{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, }, |
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, }, |
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, }, |
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, }, |
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, }, |
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, }, |
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{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, }, |
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}; |
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static const struct regmap_irq_chip max77693_muic_irq_chip = { |
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.name = "max77693-muic", |
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.status_base = MAX77693_MUIC_REG_INT1, |
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.mask_base = MAX77693_MUIC_REG_INTMASK1, |
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.mask_invert = true, |
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.num_regs = 3, |
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.irqs = max77693_muic_irqs, |
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.num_irqs = ARRAY_SIZE(max77693_muic_irqs), |
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}; |
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static const struct regmap_config max77693_regmap_haptic_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = MAX77693_HAPTIC_REG_END, |
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}; |
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static int max77693_i2c_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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struct max77693_dev *max77693; |
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unsigned int reg_data; |
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int ret = 0; |
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max77693 = devm_kzalloc(&i2c->dev, |
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sizeof(struct max77693_dev), GFP_KERNEL); |
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if (max77693 == NULL) |
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return -ENOMEM; |
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i2c_set_clientdata(i2c, max77693); |
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max77693->dev = &i2c->dev; |
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max77693->i2c = i2c; |
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max77693->irq = i2c->irq; |
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max77693->type = id->driver_data; |
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max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config); |
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if (IS_ERR(max77693->regmap)) { |
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ret = PTR_ERR(max77693->regmap); |
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dev_err(max77693->dev, "failed to allocate register map: %d\n", |
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ret); |
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return ret; |
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} |
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ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2, |
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®_data); |
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if (ret < 0) { |
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dev_err(max77693->dev, "device not found on this channel\n"); |
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return ret; |
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} else |
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dev_info(max77693->dev, "device ID: 0x%x\n", reg_data); |
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max77693->i2c_muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC); |
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if (IS_ERR(max77693->i2c_muic)) { |
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dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n"); |
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return PTR_ERR(max77693->i2c_muic); |
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} |
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i2c_set_clientdata(max77693->i2c_muic, max77693); |
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max77693->i2c_haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC); |
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if (IS_ERR(max77693->i2c_haptic)) { |
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dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n"); |
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ret = PTR_ERR(max77693->i2c_haptic); |
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goto err_i2c_haptic; |
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} |
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i2c_set_clientdata(max77693->i2c_haptic, max77693); |
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max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic, |
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&max77693_regmap_haptic_config); |
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if (IS_ERR(max77693->regmap_haptic)) { |
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ret = PTR_ERR(max77693->regmap_haptic); |
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dev_err(max77693->dev, |
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"failed to initialize haptic register map: %d\n", ret); |
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goto err_regmap; |
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} |
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/* |
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* Initialize register map for MUIC device because use regmap-muic |
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* instance of MUIC device when irq of max77693 is initialized |
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* before call max77693-muic probe() function. |
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*/ |
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max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic, |
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&max77693_regmap_muic_config); |
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if (IS_ERR(max77693->regmap_muic)) { |
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ret = PTR_ERR(max77693->regmap_muic); |
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dev_err(max77693->dev, |
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"failed to allocate register map: %d\n", ret); |
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goto err_regmap; |
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} |
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ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, |
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IRQF_ONESHOT | IRQF_SHARED | |
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IRQF_TRIGGER_FALLING, 0, |
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&max77693_led_irq_chip, |
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&max77693->irq_data_led); |
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if (ret) { |
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); |
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goto err_regmap; |
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} |
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ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, |
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IRQF_ONESHOT | IRQF_SHARED | |
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IRQF_TRIGGER_FALLING, 0, |
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&max77693_topsys_irq_chip, |
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&max77693->irq_data_topsys); |
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if (ret) { |
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); |
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goto err_irq_topsys; |
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} |
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ret = regmap_add_irq_chip(max77693->regmap, max77693->irq, |
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IRQF_ONESHOT | IRQF_SHARED | |
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IRQF_TRIGGER_FALLING, 0, |
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&max77693_charger_irq_chip, |
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&max77693->irq_data_chg); |
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if (ret) { |
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); |
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goto err_irq_charger; |
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} |
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ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq, |
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IRQF_ONESHOT | IRQF_SHARED | |
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IRQF_TRIGGER_FALLING, 0, |
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&max77693_muic_irq_chip, |
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&max77693->irq_data_muic); |
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if (ret) { |
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dev_err(max77693->dev, "failed to add irq chip: %d\n", ret); |
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goto err_irq_muic; |
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} |
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/* Unmask interrupts from all blocks in interrupt source register */ |
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ret = regmap_update_bits(max77693->regmap, |
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MAX77693_PMIC_REG_INTSRC_MASK, |
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SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL); |
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if (ret < 0) { |
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dev_err(max77693->dev, |
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"Could not unmask interrupts in INTSRC: %d\n", |
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ret); |
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goto err_intsrc; |
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} |
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pm_runtime_set_active(max77693->dev); |
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ret = mfd_add_devices(max77693->dev, -1, max77693_devs, |
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ARRAY_SIZE(max77693_devs), NULL, 0, NULL); |
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if (ret < 0) |
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goto err_mfd; |
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return ret; |
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err_mfd: |
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mfd_remove_devices(max77693->dev); |
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err_intsrc: |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); |
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err_irq_muic: |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg); |
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err_irq_charger: |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); |
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err_irq_topsys: |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); |
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err_regmap: |
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i2c_unregister_device(max77693->i2c_haptic); |
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err_i2c_haptic: |
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i2c_unregister_device(max77693->i2c_muic); |
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return ret; |
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} |
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static int max77693_i2c_remove(struct i2c_client *i2c) |
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{ |
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struct max77693_dev *max77693 = i2c_get_clientdata(i2c); |
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mfd_remove_devices(max77693->dev); |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic); |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg); |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys); |
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regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); |
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i2c_unregister_device(max77693->i2c_muic); |
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i2c_unregister_device(max77693->i2c_haptic); |
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return 0; |
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} |
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static const struct i2c_device_id max77693_i2c_id[] = { |
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{ "max77693", TYPE_MAX77693 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, max77693_i2c_id); |
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static int max77693_suspend(struct device *dev) |
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{ |
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struct i2c_client *i2c = to_i2c_client(dev); |
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struct max77693_dev *max77693 = i2c_get_clientdata(i2c); |
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if (device_may_wakeup(dev)) { |
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enable_irq_wake(max77693->irq); |
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disable_irq(max77693->irq); |
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} |
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return 0; |
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} |
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static int max77693_resume(struct device *dev) |
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{ |
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struct i2c_client *i2c = to_i2c_client(dev); |
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struct max77693_dev *max77693 = i2c_get_clientdata(i2c); |
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if (device_may_wakeup(dev)) { |
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disable_irq_wake(max77693->irq); |
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enable_irq(max77693->irq); |
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} |
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return 0; |
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} |
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static const struct dev_pm_ops max77693_pm = { |
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.suspend = max77693_suspend, |
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.resume = max77693_resume, |
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}; |
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#ifdef CONFIG_OF |
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static const struct of_device_id max77693_dt_match[] = { |
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{ .compatible = "maxim,max77693" }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, max77693_dt_match); |
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#endif |
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static struct i2c_driver max77693_i2c_driver = { |
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.driver = { |
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.name = "max77693", |
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.pm = &max77693_pm, |
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.of_match_table = of_match_ptr(max77693_dt_match), |
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}, |
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.probe = max77693_i2c_probe, |
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.remove = max77693_i2c_remove, |
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.id_table = max77693_i2c_id, |
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}; |
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module_i2c_driver(max77693_i2c_driver); |
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MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver"); |
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MODULE_AUTHOR("SangYoung, Son <[email protected]>"); |
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MODULE_LICENSE("GPL");
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