[deliverable/linux.git] / drivers / mfd / tps65090.c

/*
 * 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/of.h>
#include <linux/of_device.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,
};

#ifdef CONFIG_OF
static const struct of_device_id tps65090_of_match[] = {
	{ .compatible = "ti,tps65090",},
	{},
};
MODULE_DEVICE_TABLE(of, tps65090_of_match);
#endif

static int tps65090_i2c_probe(struct i2c_client *client,
					const struct i2c_device_id *id)
{
	struct tps65090_platform_data *pdata = client->dev.platform_data;
	int irq_base = 0;
	struct tps65090 *tps65090;
	int ret;

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

	if (pdata)
		irq_base = pdata->irq_base;

	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, 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,
		0, regmap_irq_get_domain(tps65090->irq_data));
	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;
}

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,
		.of_match_table = of_match_ptr(tps65090_of_match),
	},
	.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");
Commit	Line	Data
3c33be06 VB	1	/*
	2	* Core driver for TI TPS65090 PMIC family
	3	*
	4	* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
	5
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	#include <linux/interrupt.h>
	20	#include <linux/irq.h>
	21	#include <linux/kernel.h>
	22	#include <linux/module.h>
	23	#include <linux/mutex.h>
	24	#include <linux/slab.h>
	25	#include <linux/i2c.h>
	26	#include <linux/mfd/core.h>
	27	#include <linux/mfd/tps65090.h>
40719314 LD	28	#include <linux/of.h>
40719314 LD	29	#include <linux/of_device.h>
3c33be06 VB	30	#include <linux/err.h>
	31
	32	#define NUM_INT_REG 2
	33	#define TOTAL_NUM_REG 0x18
	34
	35	/* interrupt status registers */
	36	#define TPS65090_INT_STS 0x0
	37	#define TPS65090_INT_STS2 0x1
	38
	39	/* interrupt mask registers */
	40	#define TPS65090_INT_MSK 0x2
	41	#define TPS65090_INT_MSK2 0x3
	42
759f2598 LD	43	#define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1
	44	#define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2
	45	#define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3
	46	#define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4
	47	#define TPS65090_INT1_MASK_CHARGING_COMPLETE 5
	48	#define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6
	49	#define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7
	50	#define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0
	51	#define TPS65090_INT2_MASK_OVERLOAD_FET1 1
	52	#define TPS65090_INT2_MASK_OVERLOAD_FET2 2
	53	#define TPS65090_INT2_MASK_OVERLOAD_FET3 3
	54	#define TPS65090_INT2_MASK_OVERLOAD_FET4 4
	55	#define TPS65090_INT2_MASK_OVERLOAD_FET5 5
	56	#define TPS65090_INT2_MASK_OVERLOAD_FET6 6
	57	#define TPS65090_INT2_MASK_OVERLOAD_FET7 7
3c33be06 VB	58
	59	static struct mfd_cell tps65090s[] = {
	60	{
b7e53786	61	.name = "tps65090-pmic",
3c33be06 VB	62	},
3c33be06 VB	63	{
e2e8ffc9	64	.name = "tps65090-charger",
3c33be06 VB	65	},
	66	};
	67
759f2598 LD	68	static const struct regmap_irq tps65090_irqs[] = {
	69	/* INT1 IRQs*/
	70	[TPS65090_IRQ_VAC_STATUS_CHANGE] = {
	71	.mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE,
	72	},
	73	[TPS65090_IRQ_VSYS_STATUS_CHANGE] = {
	74	.mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE,
	75	},
	76	[TPS65090_IRQ_BAT_STATUS_CHANGE] = {
	77	.mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE,
	78	},
	79	[TPS65090_IRQ_CHARGING_STATUS_CHANGE] = {
	80	.mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE,
	81	},
	82	[TPS65090_IRQ_CHARGING_COMPLETE] = {
	83	.mask = TPS65090_INT1_MASK_CHARGING_COMPLETE,
	84	},
	85	[TPS65090_IRQ_OVERLOAD_DCDC1] = {
	86	.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1,
	87	},
	88	[TPS65090_IRQ_OVERLOAD_DCDC2] = {
	89	.mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2,
	90	},
	91	/* INT2 IRQs*/
	92	[TPS65090_IRQ_OVERLOAD_DCDC3] = {
	93	.reg_offset = 1,
	94	.mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3,
	95	},
	96	[TPS65090_IRQ_OVERLOAD_FET1] = {
	97	.reg_offset = 1,
	98	.mask = TPS65090_INT2_MASK_OVERLOAD_FET1,
	99	},
	100	[TPS65090_IRQ_OVERLOAD_FET2] = {
	101	.reg_offset = 1,
	102	.mask = TPS65090_INT2_MASK_OVERLOAD_FET2,
	103	},
	104	[TPS65090_IRQ_OVERLOAD_FET3] = {
	105	.reg_offset = 1,
	106	.mask = TPS65090_INT2_MASK_OVERLOAD_FET3,
	107	},
	108	[TPS65090_IRQ_OVERLOAD_FET4] = {
	109	.reg_offset = 1,
	110	.mask = TPS65090_INT2_MASK_OVERLOAD_FET4,
	111	},
	112	[TPS65090_IRQ_OVERLOAD_FET5] = {
	113	.reg_offset = 1,
	114	.mask = TPS65090_INT2_MASK_OVERLOAD_FET5,
	115	},
	116	[TPS65090_IRQ_OVERLOAD_FET6] = {
	117	.reg_offset = 1,
	118	.mask = TPS65090_INT2_MASK_OVERLOAD_FET6,
	119	},
	120	[TPS65090_IRQ_OVERLOAD_FET7] = {
	121	.reg_offset = 1,
	122	.mask = TPS65090_INT2_MASK_OVERLOAD_FET7,
	123	},
	124	};
3c33be06	125
759f2598 LD	126	static struct regmap_irq_chip tps65090_irq_chip = {
	127	.name = "tps65090",
	128	.irqs = tps65090_irqs,
	129	.num_irqs = ARRAY_SIZE(tps65090_irqs),
	130	.num_regs = NUM_INT_REG,
	131	.status_base = TPS65090_INT_STS,
	132	.mask_base = TPS65090_INT_MSK,
	133	.mask_invert = true,
	134	};
3c33be06 VB	135
	136	static bool is_volatile_reg(struct device *dev, unsigned int reg)
	137	{
759f2598	138	if ((reg == TPS65090_INT_STS) \|\| (reg == TPS65090_INT_STS2))
3c33be06 VB	139	return true;
	140	else
	141	return false;
	142	}
	143
	144	static const struct regmap_config tps65090_regmap_config = {
	145	.reg_bits = 8,
	146	.val_bits = 8,
	147	.max_register = TOTAL_NUM_REG,
	148	.num_reg_defaults_raw = TOTAL_NUM_REG,
	149	.cache_type = REGCACHE_RBTREE,
	150	.volatile_reg = is_volatile_reg,
	151	};
	152
40719314 LD	153	#ifdef CONFIG_OF
	154	static const struct of_device_id tps65090_of_match[] = {
	155	{ .compatible = "ti,tps65090",},
	156	{},
	157	};
	158	MODULE_DEVICE_TABLE(of, tps65090_of_match);
	159	#endif
	160
f791be49	161	static int tps65090_i2c_probe(struct i2c_client *client,
3c33be06 VB	162	const struct i2c_device_id *id)
	163	{
	164	struct tps65090_platform_data *pdata = client->dev.platform_data;
40719314	165	int irq_base = 0;
3c33be06 VB	166	struct tps65090 *tps65090;
	167	int ret;
	168
40719314 LD	169	if (!pdata && !client->dev.of_node) {
	170	dev_err(&client->dev,
	171	"tps65090 requires platform data or of_node\n");
3c33be06 VB	172	return -EINVAL;
	173	}
	174
40719314 LD	175	if (pdata)
	176	irq_base = pdata->irq_base;
	177
e8e6f047 LD	178	tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
	179	if (!tps65090) {
	180	dev_err(&client->dev, "mem alloc for tps65090 failed\n");
3c33be06	181	return -ENOMEM;
e8e6f047	182	}
3c33be06	183
3c33be06 VB	184	tps65090->dev = &client->dev;
	185	i2c_set_clientdata(client, tps65090);
	186
3863db3e	187	tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
3c33be06	188	if (IS_ERR(tps65090->rmap)) {
b683a0a6 AL	189	ret = PTR_ERR(tps65090->rmap);
b683a0a6 AL	190	dev_err(&client->dev, "regmap_init failed with err: %d\n", ret);
759f2598 LD	191	return ret;
	192	}
	193
	194	if (client->irq) {
	195	ret = regmap_add_irq_chip(tps65090->rmap, client->irq,
40719314	196	IRQF_ONESHOT \| IRQF_TRIGGER_LOW, irq_base,
759f2598 LD	197	&tps65090_irq_chip, &tps65090->irq_data);
	198	if (ret) {
	199	dev_err(&client->dev,
	200	"IRQ init failed with err: %d\n", ret);
	201	return ret;
	202	}
b683a0a6	203	}
3c33be06 VB	204
3c33be06 VB	205	ret = mfd_add_devices(tps65090->dev, -1, tps65090s,
759f2598	206	ARRAY_SIZE(tps65090s), NULL,
4f979ed5	207	0, regmap_irq_get_domain(tps65090->irq_data));
3c33be06 VB	208	if (ret) {
	209	dev_err(&client->dev, "add mfd devices failed with err: %d\n",
	210	ret);
1d88f7a0	211	goto err_irq_exit;
3c33be06 VB	212	}
	213
	214	return 0;
	215
3c33be06 VB	216	err_irq_exit:
3c33be06 VB	217	if (client->irq)
759f2598	218	regmap_del_irq_chip(client->irq, tps65090->irq_data);
3c33be06 VB	219	return ret;
	220	}
	221
4740f73f	222	static int tps65090_i2c_remove(struct i2c_client *client)
3c33be06 VB	223	{
	224	struct tps65090 *tps65090 = i2c_get_clientdata(client);
	225
	226	mfd_remove_devices(tps65090->dev);
3c33be06	227	if (client->irq)
759f2598	228	regmap_del_irq_chip(client->irq, tps65090->irq_data);
3c33be06 VB	229
	230	return 0;
	231	}
	232
3c33be06 VB	233	static const struct i2c_device_id tps65090_id_table[] = {
	234	{ "tps65090", 0 },
	235	{ },
	236	};
	237	MODULE_DEVICE_TABLE(i2c, tps65090_id_table);
	238
	239	static struct i2c_driver tps65090_driver = {
	240	.driver = {
	241	.name = "tps65090",
	242	.owner = THIS_MODULE,
40719314	243	.of_match_table = of_match_ptr(tps65090_of_match),
3c33be06 VB	244	},
3c33be06 VB	245	.probe = tps65090_i2c_probe,
84449216	246	.remove = tps65090_i2c_remove,
3c33be06 VB	247	.id_table = tps65090_id_table,
	248	};
	249
	250	static int __init tps65090_init(void)
	251	{
	252	return i2c_add_driver(&tps65090_driver);
	253	}
	254	subsys_initcall(tps65090_init);
	255
	256	static void __exit tps65090_exit(void)
	257	{
	258	i2c_del_driver(&tps65090_driver);
	259	}
	260	module_exit(tps65090_exit);
	261
	262	MODULE_DESCRIPTION("TPS65090 core driver");
	263	MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
	264	MODULE_LICENSE("GPL v2");