drivers/mfd/tps65090.c - kernel/msm-4.9 - Gitiles

 /*
  * Core driver for TI TPS65090 PMIC family
  *
  * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.

  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
  * version 2, as published by the Free Software Foundation.

  * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
  */

 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/tps65090.h>
 #include <linux/err.h>

 #define NUM_INT_REG 2
 #define TOTAL_NUM_REG 0x18

 /* interrupt status registers */
 #define TPS65090_INT_STS	0x0
 #define TPS65090_INT_STS2	0x1

 /* interrupt mask registers */
 #define TPS65090_INT_MSK	0x2
 #define TPS65090_INT_MSK2	0x3

 #define TPS65090_INT1_MASK_VAC_STATUS_CHANGE		1
 #define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE		2
 #define TPS65090_INT1_MASK_BAT_STATUS_CHANGE		3
 #define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE	4
 #define TPS65090_INT1_MASK_CHARGING_COMPLETE		5
 #define TPS65090_INT1_MASK_OVERLOAD_DCDC1		6
 #define TPS65090_INT1_MASK_OVERLOAD_DCDC2		7
 #define TPS65090_INT2_MASK_OVERLOAD_DCDC3		0
 #define TPS65090_INT2_MASK_OVERLOAD_FET1		1
 #define TPS65090_INT2_MASK_OVERLOAD_FET2		2
 #define TPS65090_INT2_MASK_OVERLOAD_FET3		3
 #define TPS65090_INT2_MASK_OVERLOAD_FET4		4
 #define TPS65090_INT2_MASK_OVERLOAD_FET5		5
 #define TPS65090_INT2_MASK_OVERLOAD_FET6		6
 #define TPS65090_INT2_MASK_OVERLOAD_FET7		7

 static struct mfd_cell tps65090s[] = {
 	{
 		.name = "tps65090-pmic",
 	},
 	{
 		.name = "tps65090-charger",
 	},
 };

 static const struct regmap_irq tps65090_irqs[] = {
 	/* INT1 IRQs*/
 	[TPS65090_IRQ_VAC_STATUS_CHANGE] = {
 			.mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE,
 	},
 	[TPS65090_IRQ_VSYS_STATUS_CHANGE] = {
 			.mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE,
 	},
 	[TPS65090_IRQ_BAT_STATUS_CHANGE] = {
 			.mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE,
 	},
 	[TPS65090_IRQ_CHARGING_STATUS_CHANGE] = {
 			.mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE,
 	},
 	[TPS65090_IRQ_CHARGING_COMPLETE] = {
 			.mask = TPS65090_INT1_MASK_CHARGING_COMPLETE,
 	},
 	[TPS65090_IRQ_OVERLOAD_DCDC1] = {
 			.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1,
 	},
 	[TPS65090_IRQ_OVERLOAD_DCDC2] = {
 			.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2,
 	},
 	/* INT2 IRQs*/
 	[TPS65090_IRQ_OVERLOAD_DCDC3] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3,
 	},
 	[TPS65090_IRQ_OVERLOAD_FET1] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_FET1,
 	},
 	[TPS65090_IRQ_OVERLOAD_FET2] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_FET2,
 	},
 	[TPS65090_IRQ_OVERLOAD_FET3] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_FET3,
 	},
 	[TPS65090_IRQ_OVERLOAD_FET4] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_FET4,
 	},
 	[TPS65090_IRQ_OVERLOAD_FET5] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_FET5,
 	},
 	[TPS65090_IRQ_OVERLOAD_FET6] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_FET6,
 	},
 	[TPS65090_IRQ_OVERLOAD_FET7] = {
 			.reg_offset = 1,
 			.mask = TPS65090_INT2_MASK_OVERLOAD_FET7,
 	},
 };

 static struct regmap_irq_chip tps65090_irq_chip = {
 	.name = "tps65090",
 	.irqs = tps65090_irqs,
 	.num_irqs = ARRAY_SIZE(tps65090_irqs),
 	.num_regs = NUM_INT_REG,
 	.status_base = TPS65090_INT_STS,
 	.mask_base = TPS65090_INT_MSK,
 	.mask_invert = true,
 };

 static bool is_volatile_reg(struct device *dev, unsigned int reg)
 {
 	if ((reg == TPS65090_INT_STS) || (reg == TPS65090_INT_STS2))
 		return true;
 	else
 		return false;
 }

 static const struct regmap_config tps65090_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = TOTAL_NUM_REG,
 	.num_reg_defaults_raw = TOTAL_NUM_REG,
 	.cache_type = REGCACHE_RBTREE,
 	.volatile_reg = is_volatile_reg,
 };

 static int tps65090_i2c_probe(struct i2c_client *client,
 					const struct i2c_device_id *id)
 {
 	struct tps65090_platform_data *pdata = client->dev.platform_data;
 	struct tps65090 *tps65090;
 	int ret;

 	if (!pdata) {
 		dev_err(&client->dev, "tps65090 requires platform data\n");
 		return -EINVAL;
 	}

 	tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
 	if (!tps65090) {
 		dev_err(&client->dev, "mem alloc for tps65090 failed\n");
 		return -ENOMEM;
 	}

 	tps65090->dev = &client->dev;
 	i2c_set_clientdata(client, tps65090);

 	tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
 	if (IS_ERR(tps65090->rmap)) {
 		ret = PTR_ERR(tps65090->rmap);
 		dev_err(&client->dev, "regmap_init failed with err: %d\n", ret);
 		return ret;
 	}

 	if (client->irq) {
 		ret = regmap_add_irq_chip(tps65090->rmap, client->irq,
 			IRQF_ONESHOT | IRQF_TRIGGER_LOW, pdata->irq_base,
 			&tps65090_irq_chip, &tps65090->irq_data);
 			if (ret) {
 				dev_err(&client->dev,
 					"IRQ init failed with err: %d\n", ret);
 			return ret;
 		}
 	}

 	ret = mfd_add_devices(tps65090->dev, -1, tps65090s,
 		ARRAY_SIZE(tps65090s), NULL,
 		regmap_irq_chip_get_base(tps65090->irq_data), NULL);
 	if (ret) {
 		dev_err(&client->dev, "add mfd devices failed with err: %d\n",
 			ret);
 		goto err_irq_exit;
 	}

 	return 0;

 err_irq_exit:
 	if (client->irq)
 		regmap_del_irq_chip(client->irq, tps65090->irq_data);
 	return ret;
 }

 static int tps65090_i2c_remove(struct i2c_client *client)
 {
 	struct tps65090 *tps65090 = i2c_get_clientdata(client);

 	mfd_remove_devices(tps65090->dev);
 	if (client->irq)
 		regmap_del_irq_chip(client->irq, tps65090->irq_data);

 	return 0;
 }

 #ifdef CONFIG_PM_SLEEP
 static int tps65090_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	if (client->irq)
 		disable_irq(client->irq);
 	return 0;
 }

 static int tps65090_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	if (client->irq)
 		enable_irq(client->irq);
 	return 0;
 }
 #endif

 static const struct dev_pm_ops tps65090_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(tps65090_suspend, tps65090_resume)
 };

 static const struct i2c_device_id tps65090_id_table[] = {
 	{ "tps65090", 0 },
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, tps65090_id_table);

 static struct i2c_driver tps65090_driver = {
 	.driver	= {
 		.name	= "tps65090",
 		.owner	= THIS_MODULE,
 		.pm	= &tps65090_pm_ops,
 	},
 	.probe		= tps65090_i2c_probe,
 	.remove		= tps65090_i2c_remove,
 	.id_table	= tps65090_id_table,
 };

 static int __init tps65090_init(void)
 {
 	return i2c_add_driver(&tps65090_driver);
 }
 subsys_initcall(tps65090_init);

 static void __exit tps65090_exit(void)
 {
 	i2c_del_driver(&tps65090_driver);
 }
 module_exit(tps65090_exit);

 MODULE_DESCRIPTION("TPS65090 core driver");
 MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
 MODULE_LICENSE("GPL v2");
	/*
	* Core driver for TI TPS65090 PMIC family
	*
	* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.

	* This program is free software; you can redistribute it and/or modify it
	* under the terms and conditions of the GNU General Public License,
	* version 2, as published by the Free Software Foundation.

	* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
	*/

	#include <linux/interrupt.h>
	#include <linux/irq.h>
	#include <linux/kernel.h>
	#include <linux/module.h>
	#include <linux/mutex.h>
	#include <linux/slab.h>
	#include <linux/i2c.h>
	#include <linux/mfd/core.h>
	#include <linux/mfd/tps65090.h>
	#include <linux/err.h>

	#define NUM_INT_REG 2
	#define TOTAL_NUM_REG 0x18

	/* interrupt status registers */
	#define TPS65090_INT_STS 0x0
	#define TPS65090_INT_STS2 0x1

	/* interrupt mask registers */
	#define TPS65090_INT_MSK 0x2
	#define TPS65090_INT_MSK2 0x3

	#define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1
	#define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2
	#define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3
	#define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4
	#define TPS65090_INT1_MASK_CHARGING_COMPLETE 5
	#define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6
	#define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7
	#define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0
	#define TPS65090_INT2_MASK_OVERLOAD_FET1 1
	#define TPS65090_INT2_MASK_OVERLOAD_FET2 2
	#define TPS65090_INT2_MASK_OVERLOAD_FET3 3
	#define TPS65090_INT2_MASK_OVERLOAD_FET4 4
	#define TPS65090_INT2_MASK_OVERLOAD_FET5 5
	#define TPS65090_INT2_MASK_OVERLOAD_FET6 6
	#define TPS65090_INT2_MASK_OVERLOAD_FET7 7

	static struct mfd_cell tps65090s[] = {
	{
	.name = "tps65090-pmic",
	},
	{
	.name = "tps65090-charger",
	},
	};

	static const struct regmap_irq tps65090_irqs[] = {
	/* INT1 IRQs*/
	[TPS65090_IRQ_VAC_STATUS_CHANGE] = {
	.mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE,
	},
	[TPS65090_IRQ_VSYS_STATUS_CHANGE] = {
	.mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE,
	},
	[TPS65090_IRQ_BAT_STATUS_CHANGE] = {
	.mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE,
	},
	[TPS65090_IRQ_CHARGING_STATUS_CHANGE] = {
	.mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE,
	},
	[TPS65090_IRQ_CHARGING_COMPLETE] = {
	.mask = TPS65090_INT1_MASK_CHARGING_COMPLETE,
	},
	[TPS65090_IRQ_OVERLOAD_DCDC1] = {
	.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1,
	},
	[TPS65090_IRQ_OVERLOAD_DCDC2] = {
	.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2,
	},
	/* INT2 IRQs*/
	[TPS65090_IRQ_OVERLOAD_DCDC3] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3,
	},
	[TPS65090_IRQ_OVERLOAD_FET1] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_FET1,
	},
	[TPS65090_IRQ_OVERLOAD_FET2] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_FET2,
	},
	[TPS65090_IRQ_OVERLOAD_FET3] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_FET3,
	},
	[TPS65090_IRQ_OVERLOAD_FET4] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_FET4,
	},
	[TPS65090_IRQ_OVERLOAD_FET5] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_FET5,
	},
	[TPS65090_IRQ_OVERLOAD_FET6] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_FET6,
	},
	[TPS65090_IRQ_OVERLOAD_FET7] = {
	.reg_offset = 1,
	.mask = TPS65090_INT2_MASK_OVERLOAD_FET7,
	},
	};

	static struct regmap_irq_chip tps65090_irq_chip = {
	.name = "tps65090",
	.irqs = tps65090_irqs,
	.num_irqs = ARRAY_SIZE(tps65090_irqs),
	.num_regs = NUM_INT_REG,
	.status_base = TPS65090_INT_STS,
	.mask_base = TPS65090_INT_MSK,
	.mask_invert = true,
	};

	static bool is_volatile_reg(struct device *dev, unsigned int reg)
	{
	if ((reg == TPS65090_INT_STS) \|\| (reg == TPS65090_INT_STS2))
	return true;
	else
	return false;
	}

	static const struct regmap_config tps65090_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = TOTAL_NUM_REG,
	.num_reg_defaults_raw = TOTAL_NUM_REG,
	.cache_type = REGCACHE_RBTREE,
	.volatile_reg = is_volatile_reg,
	};

	static int tps65090_i2c_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
	{
	struct tps65090_platform_data *pdata = client->dev.platform_data;
	struct tps65090 *tps65090;
	int ret;

	if (!pdata) {
	dev_err(&client->dev, "tps65090 requires platform data\n");
	return -EINVAL;
	}

	tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
	if (!tps65090) {
	dev_err(&client->dev, "mem alloc for tps65090 failed\n");
	return -ENOMEM;
	}

	tps65090->dev = &client->dev;
	i2c_set_clientdata(client, tps65090);

	tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
	if (IS_ERR(tps65090->rmap)) {
	ret = PTR_ERR(tps65090->rmap);
	dev_err(&client->dev, "regmap_init failed with err: %d\n", ret);
	return ret;
	}

	if (client->irq) {
	ret = regmap_add_irq_chip(tps65090->rmap, client->irq,
	IRQF_ONESHOT \| IRQF_TRIGGER_LOW, pdata->irq_base,
	&tps65090_irq_chip, &tps65090->irq_data);
	if (ret) {
	dev_err(&client->dev,
	"IRQ init failed with err: %d\n", ret);
	return ret;
	}
	}

	ret = mfd_add_devices(tps65090->dev, -1, tps65090s,
	ARRAY_SIZE(tps65090s), NULL,
	regmap_irq_chip_get_base(tps65090->irq_data), NULL);
	if (ret) {
	dev_err(&client->dev, "add mfd devices failed with err: %d\n",
	ret);
	goto err_irq_exit;
	}

	return 0;

	err_irq_exit:
	if (client->irq)
	regmap_del_irq_chip(client->irq, tps65090->irq_data);
	return ret;
	}

	static int tps65090_i2c_remove(struct i2c_client *client)
	{
	struct tps65090 *tps65090 = i2c_get_clientdata(client);

	mfd_remove_devices(tps65090->dev);
	if (client->irq)
	regmap_del_irq_chip(client->irq, tps65090->irq_data);

	return 0;
	}

	#ifdef CONFIG_PM_SLEEP
	static int tps65090_suspend(struct device *dev)
	{
	struct i2c_client *client = to_i2c_client(dev);
	if (client->irq)
	disable_irq(client->irq);
	return 0;
	}

	static int tps65090_resume(struct device *dev)
	{
	struct i2c_client *client = to_i2c_client(dev);
	if (client->irq)
	enable_irq(client->irq);
	return 0;
	}
	#endif

	static const struct dev_pm_ops tps65090_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(tps65090_suspend, tps65090_resume)
	};

	static const struct i2c_device_id tps65090_id_table[] = {
	{ "tps65090", 0 },
	{ },
	};
	MODULE_DEVICE_TABLE(i2c, tps65090_id_table);

	static struct i2c_driver tps65090_driver = {
	.driver = {
	.name = "tps65090",
	.owner = THIS_MODULE,
	.pm = &tps65090_pm_ops,
	},
	.probe = tps65090_i2c_probe,
	.remove = tps65090_i2c_remove,
	.id_table = tps65090_id_table,
	};

	static int __init tps65090_init(void)
	{
	return i2c_add_driver(&tps65090_driver);
	}
	subsys_initcall(tps65090_init);

	static void __exit tps65090_exit(void)
	{
	i2c_del_driver(&tps65090_driver);
	}
	module_exit(tps65090_exit);

	MODULE_DESCRIPTION("TPS65090 core driver");
	MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
	MODULE_LICENSE("GPL v2");