Release 4.11 drivers/mfd/max77693.c

/*
 * max77693.c - mfd core driver for the MAX 77693
 *
 * Copyright (C) 2012 Samsung Electronics
 * SangYoung Son <hello.son@samsung.com>
 *
 * This program is not provided / owned by Maxim Integrated Products.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * This driver is based on max8997.c
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77693-private.h>
#include <linux/regulator/machine.h>
#include <linux/regmap.h>


#define I2C_ADDR_PMIC	(0xCC >> 1)	
/* Charger, Flash LED */

#define I2C_ADDR_MUIC	(0x4A >> 1)

#define I2C_ADDR_HAPTIC	(0x90 >> 1)


static const struct mfd_cell max77693_devs[] = {
	{ .name = "max77693-pmic", },
	{
		.name = "max77693-charger",
		.of_compatible = "maxim,max77693-charger",
        },
	{ .name = "max77693-muic", },
	{
		.name = "max77693-haptic",
		.of_compatible = "maxim,max77693-haptic",
        },
	{
		.name = "max77693-led",
		.of_compatible = "maxim,max77693-led",
        },
};


static const struct regmap_config max77693_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = MAX77693_PMIC_REG_END,
};


static const struct regmap_irq max77693_led_irqs[] = {
	{ .mask = LED_IRQ_FLED2_OPEN,  },
	{ .mask = LED_IRQ_FLED2_SHORT, },
	{ .mask = LED_IRQ_FLED1_OPEN,  },
	{ .mask = LED_IRQ_FLED1_SHORT, },
	{ .mask = LED_IRQ_MAX_FLASH,   },
};


static const struct regmap_irq_chip max77693_led_irq_chip = {
	.name			= "max77693-led",
	.status_base		= MAX77693_LED_REG_FLASH_INT,
	.mask_base		= MAX77693_LED_REG_FLASH_INT_MASK,
	.mask_invert		= false,
	.num_regs		= 1,
	.irqs			= max77693_led_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_led_irqs),
};


static const struct regmap_irq max77693_topsys_irqs[] = {
	{ .mask = TOPSYS_IRQ_T120C_INT,  },
	{ .mask = TOPSYS_IRQ_T140C_INT,  },
	{ .mask = TOPSYS_IRQ_LOWSYS_INT, },
};


static const struct regmap_irq_chip max77693_topsys_irq_chip = {
	.name			= "max77693-topsys",
	.status_base		= MAX77693_PMIC_REG_TOPSYS_INT,
	.mask_base		= MAX77693_PMIC_REG_TOPSYS_INT_MASK,
	.mask_invert		= false,
	.num_regs		= 1,
	.irqs			= max77693_topsys_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_topsys_irqs),
};


static const struct regmap_irq max77693_charger_irqs[] = {
	{ .mask = CHG_IRQ_BYP_I,   },
	{ .mask = CHG_IRQ_THM_I,   },
	{ .mask = CHG_IRQ_BAT_I,   },
	{ .mask = CHG_IRQ_CHG_I,   },
	{ .mask = CHG_IRQ_CHGIN_I, },
};


static const struct regmap_irq_chip max77693_charger_irq_chip = {
	.name			= "max77693-charger",
	.status_base		= MAX77693_CHG_REG_CHG_INT,
	.mask_base		= MAX77693_CHG_REG_CHG_INT_MASK,
	.mask_invert		= false,
	.num_regs		= 1,
	.irqs			= max77693_charger_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_charger_irqs),
};


static const struct regmap_config max77693_regmap_muic_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = MAX77693_MUIC_REG_END,
};


static const struct regmap_irq max77693_muic_irqs[] = {
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC,               },
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW,       },
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR,       },
	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K,               },

	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP,       },
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN,       },
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR,       },
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP,               },
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT,       },
	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM,               },

	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC,               },
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC,               },
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP,               },
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR,       },
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED,       },
	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET,       },
};


static const struct regmap_irq_chip max77693_muic_irq_chip = {
	.name			= "max77693-muic",
	.status_base		= MAX77693_MUIC_REG_INT1,
	.mask_base		= MAX77693_MUIC_REG_INTMASK1,
	.mask_invert		= true,
	.num_regs		= 3,
	.irqs			= max77693_muic_irqs,
	.num_irqs		= ARRAY_SIZE(max77693_muic_irqs),
};


static const struct regmap_config max77693_regmap_haptic_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = MAX77693_HAPTIC_REG_END,
};



static int max77693_i2c_probe(struct i2c_client *i2c,
			      const struct i2c_device_id *id)
{
	struct max77693_dev *max77693;
	unsigned int reg_data;
	int ret = 0;

	max77693 = devm_kzalloc(&i2c->dev,
			sizeof(struct max77693_dev), GFP_KERNEL);
	if (max77693 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, max77693);
	max77693->dev = &i2c->dev;
	max77693->i2c = i2c;
	max77693->irq = i2c->irq;
	max77693->type = id->driver_data;

	max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
	if (IS_ERR(max77693->regmap)) {
		ret = PTR_ERR(max77693->regmap);
		dev_err(max77693->dev, "failed to allocate register map: %d\n",
				ret);
		return ret;
	}

	ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
				&reg_data);
	if (ret < 0) {
		dev_err(max77693->dev, "device not found on this channel\n");
		return ret;
	} else
		dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);

	max77693->i2c_muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
	if (!max77693->i2c_muic) {
		dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");
		return -ENODEV;
	}
	i2c_set_clientdata(max77693->i2c_muic, max77693);

	max77693->i2c_haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
	if (!max77693->i2c_haptic) {
		dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");
		ret = -ENODEV;
		goto err_i2c_haptic;
	}
	i2c_set_clientdata(max77693->i2c_haptic, max77693);

	max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,
					&max77693_regmap_haptic_config);
	if (IS_ERR(max77693->regmap_haptic)) {
		ret = PTR_ERR(max77693->regmap_haptic);
		dev_err(max77693->dev,
			"failed to initialize haptic register map: %d\n", ret);
		goto err_regmap;
	}

	/*
         * Initialize register map for MUIC device because use regmap-muic
         * instance of MUIC device when irq of max77693 is initialized
         * before call max77693-muic probe() function.
         */
	max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,
					 &max77693_regmap_muic_config);
	if (IS_ERR(max77693->regmap_muic)) {
		ret = PTR_ERR(max77693->regmap_muic);
		dev_err(max77693->dev,
			"failed to allocate register map: %d\n", ret);
		goto err_regmap;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_led_irq_chip,
				&max77693->irq_data_led);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_regmap;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_topsys_irq_chip,
				&max77693->irq_data_topsys);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_topsys;
	}

	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_charger_irq_chip,
				&max77693->irq_data_chg);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_charger;
	}

	ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,
				IRQF_ONESHOT | IRQF_SHARED |
				IRQF_TRIGGER_FALLING, 0,
				&max77693_muic_irq_chip,
				&max77693->irq_data_muic);
	if (ret) {
		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);
		goto err_irq_muic;
	}

	/* Unmask interrupts from all blocks in interrupt source register */
	ret = regmap_update_bits(max77693->regmap,
				MAX77693_PMIC_REG_INTSRC_MASK,
				SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);
	if (ret < 0) {
		dev_err(max77693->dev,
			"Could not unmask interrupts in INTSRC: %d\n",
			ret);
		goto err_intsrc;
	}

	pm_runtime_set_active(max77693->dev);

	ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
			      ARRAY_SIZE(max77693_devs), NULL, 0, NULL);
	if (ret < 0)
		goto err_mfd;

	return ret;

err_mfd:
	mfd_remove_devices(max77693->dev);
err_intsrc:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
err_irq_muic:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
err_irq_charger:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
err_irq_topsys:
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);
err_regmap:
	i2c_unregister_device(max77693->i2c_haptic);
err_i2c_haptic:
	i2c_unregister_device(max77693->i2c_muic);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Chanwoo Choi
295
39.70%
3
21.43%
Robert Baldyga
234
31.49%
2
14.29%
Krzysztof Kozlowski
107
14.40%
5
35.71%
Axel Lin
55
7.40%
2
14.29%
Jaewon Kim
50
6.73%
1
7.14%
Mark Brown
2
0.27%
1
7.14%
Total
743
100.00%
14
100.00%



static int max77693_i2c_remove(struct i2c_client *i2c)
{
	struct max77693_dev *max77693 = i2c_get_clientdata(i2c);

	mfd_remove_devices(max77693->dev);

	regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);
	regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);

	i2c_unregister_device(max77693->i2c_muic);
	i2c_unregister_device(max77693->i2c_haptic);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Chanwoo Choi
43
48.31%
1
25.00%
Robert Baldyga
39
43.82%
1
25.00%
Axel Lin
4
4.49%
1
25.00%
Krzysztof Kozlowski
3
3.37%
1
25.00%
Total
89
100.00%
4
100.00%


static const struct i2c_device_id max77693_i2c_id[] = {
	{ "max77693", TYPE_MAX77693 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);



static int max77693_suspend(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max77693_dev *max77693 = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev)) {
		enable_irq_wake(max77693->irq);
		disable_irq(max77693->irq);
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Chanwoo Choi
46
80.70%
1
33.33%
Robert Baldyga
10
17.54%
1
33.33%
Geliang Tang
1
1.75%
1
33.33%
Total
57
100.00%
3
100.00%



static int max77693_resume(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max77693_dev *max77693 = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev)) {
		disable_irq_wake(max77693->irq);
		enable_irq(max77693->irq);
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Chanwoo Choi
47
82.46%
1
33.33%
Robert Baldyga
9
15.79%
1
33.33%
Geliang Tang
1
1.75%
1
33.33%
Total
57
100.00%
3
100.00%


static const struct dev_pm_ops max77693_pm = {
	.suspend = max77693_suspend,
	.resume = max77693_resume,
};

#ifdef CONFIG_OF

static const struct of_device_id max77693_dt_match[] = {
	{ .compatible = "maxim,max77693" },
	{},
};
MODULE_DEVICE_TABLE(of, max77693_dt_match);
#endif


static struct i2c_driver max77693_i2c_driver = {
	.driver = {
		   .name = "max77693",
		   .pm = &max77693_pm,
		   .of_match_table = of_match_ptr(max77693_dt_match),
        },
	.probe = max77693_i2c_probe,
	.remove = max77693_i2c_remove,
	.id_table = max77693_i2c_id,
};


module_i2c_driver(max77693_i2c_driver);

MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
MODULE_LICENSE("GPL");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Robert Baldyga
801
45.23%
2
7.69%
Chanwoo Choi
638
36.02%
3
11.54%
Krzysztof Kozlowski
146
8.24%
9
34.62%
Jaewon Kim
79
4.46%
2
7.69%
Axel Lin
59
3.33%
2
7.69%
Andrzej Hajda
30
1.69%
1
3.85%
Jacek Anaszewski
9
0.51%
2
7.69%
Mark Brown
3
0.17%
2
7.69%
Sachin Kamat
3
0.17%
1
3.85%
Geliang Tang
2
0.11%
1
3.85%
Geert Uytterhoeven
1
0.06%
1
3.85%
Total
1771
100.00%
26
100.00%
Directory: drivers/mfd

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