[mirror_ubuntu-zesty-kernel.git] / drivers / mfd / 88pm805.c

/*
 * Base driver for Marvell 88PM805
 *
 * Copyright (C) 2012 Marvell International Ltd.
 * Haojian Zhuang <haojian.zhuang@marvell.com>
 * Joseph(Yossi) Hanin <yhanin@marvell.com>
 * Qiao Zhou <zhouqiao@marvell.com>
 *
 * This file is subject to the terms and conditions of the GNU General
 * Public License. See the file "COPYING" in the main directory of this
 * archive for more details.
 *
 * 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
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/mfd/core.h>
#include <linux/mfd/88pm80x.h>
#include <linux/slab.h>
#include <linux/delay.h>

static const struct i2c_device_id pm80x_id_table[] = {
	{"88PM805", 0},
	{} /* NULL terminated */
};
MODULE_DEVICE_TABLE(i2c, pm80x_id_table);

/* Interrupt Number in 88PM805 */
enum {
	PM805_IRQ_LDO_OFF,	/*0 */
	PM805_IRQ_SRC_DPLL_LOCK,	/*1 */
	PM805_IRQ_CLIP_FAULT,
	PM805_IRQ_MIC_CONFLICT,
	PM805_IRQ_HP2_SHRT,
	PM805_IRQ_HP1_SHRT,	/*5 */
	PM805_IRQ_FINE_PLL_FAULT,
	PM805_IRQ_RAW_PLL_FAULT,
	PM805_IRQ_VOLP_BTN_DET,
	PM805_IRQ_VOLM_BTN_DET,
	PM805_IRQ_SHRT_BTN_DET,	/*10 */
	PM805_IRQ_MIC_DET,	/*11 */

	PM805_MAX_IRQ,
};

static struct resource codec_resources[] = {
	{
	 /* Headset microphone insertion or removal */
	 .name = "micin",
	 .start = PM805_IRQ_MIC_DET,
	 .end = PM805_IRQ_MIC_DET,
	 .flags = IORESOURCE_IRQ,
	 },
	{
	 /* Audio short HP1 */
	 .name = "audio-short1",
	 .start = PM805_IRQ_HP1_SHRT,
	 .end = PM805_IRQ_HP1_SHRT,
	 .flags = IORESOURCE_IRQ,
	 },
	{
	 /* Audio short HP2 */
	 .name = "audio-short2",
	 .start = PM805_IRQ_HP2_SHRT,
	 .end = PM805_IRQ_HP2_SHRT,
	 .flags = IORESOURCE_IRQ,
	 },
};

static const struct mfd_cell codec_devs[] = {
	{
	 .name = "88pm80x-codec",
	 .num_resources = ARRAY_SIZE(codec_resources),
	 .resources = &codec_resources[0],
	 .id = -1,
	 },
};

static struct regmap_irq pm805_irqs[] = {
	/* INT0 */
	[PM805_IRQ_LDO_OFF] = {
		.mask = PM805_INT1_HP1_SHRT,
	},
	[PM805_IRQ_SRC_DPLL_LOCK] = {
		.mask = PM805_INT1_HP2_SHRT,
	},
	[PM805_IRQ_CLIP_FAULT] = {
		.mask = PM805_INT1_MIC_CONFLICT,
	},
	[PM805_IRQ_MIC_CONFLICT] = {
		.mask = PM805_INT1_CLIP_FAULT,
	},
	[PM805_IRQ_HP2_SHRT] = {
		.mask = PM805_INT1_LDO_OFF,
	},
	[PM805_IRQ_HP1_SHRT] = {
		.mask = PM805_INT1_SRC_DPLL_LOCK,
	},
	/* INT1 */
	[PM805_IRQ_FINE_PLL_FAULT] = {
		.reg_offset = 1,
		.mask = PM805_INT2_MIC_DET,
	},
	[PM805_IRQ_RAW_PLL_FAULT] = {
		.reg_offset = 1,
		.mask = PM805_INT2_SHRT_BTN_DET,
	},
	[PM805_IRQ_VOLP_BTN_DET] = {
		.reg_offset = 1,
		.mask = PM805_INT2_VOLM_BTN_DET,
	},
	[PM805_IRQ_VOLM_BTN_DET] = {
		.reg_offset = 1,
		.mask = PM805_INT2_VOLP_BTN_DET,
	},
	[PM805_IRQ_SHRT_BTN_DET] = {
		.reg_offset = 1,
		.mask = PM805_INT2_RAW_PLL_FAULT,
	},
	[PM805_IRQ_MIC_DET] = {
		.reg_offset = 1,
		.mask = PM805_INT2_FINE_PLL_FAULT,
	},
};

static int device_irq_init_805(struct pm80x_chip *chip)
{
	struct regmap *map = chip->regmap;
	unsigned long flags = IRQF_ONESHOT;
	int data, mask, ret = -EINVAL;

	if (!map || !chip->irq) {
		dev_err(chip->dev, "incorrect parameters\n");
		return -EINVAL;
	}

	/*
	 * irq_mode defines the way of clearing interrupt. it's read-clear by
	 * default.
	 */
	mask =
	    PM805_STATUS0_INT_CLEAR | PM805_STATUS0_INV_INT |
	    PM800_STATUS0_INT_MASK;

	data = PM805_STATUS0_INT_CLEAR;
	ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data);
	/*
	 * PM805_INT_STATUS is under 32K clock domain, so need to
	 * add proper delay before the next I2C register access.
	 */
	usleep_range(1000, 3000);

	if (ret < 0)
		goto out;

	ret =
	    regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
				chip->regmap_irq_chip, &chip->irq_data);

out:
	return ret;
}

static void device_irq_exit_805(struct pm80x_chip *chip)
{
	regmap_del_irq_chip(chip->irq, chip->irq_data);
}

static struct regmap_irq_chip pm805_irq_chip = {
	.name = "88pm805",
	.irqs = pm805_irqs,
	.num_irqs = ARRAY_SIZE(pm805_irqs),

	.num_regs = 2,
	.status_base = PM805_INT_STATUS1,
	.mask_base = PM805_INT_MASK1,
	.ack_base = PM805_INT_STATUS1,
};

static int device_805_init(struct pm80x_chip *chip)
{
	int ret = 0;
	struct regmap *map = chip->regmap;

	if (!map) {
		dev_err(chip->dev, "regmap is invalid\n");
		return -EINVAL;
	}

	chip->regmap_irq_chip = &pm805_irq_chip;

	ret = device_irq_init_805(chip);
	if (ret < 0) {
		dev_err(chip->dev, "Failed to init pm805 irq!\n");
		goto out_irq_init;
	}

	ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
			      ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
			      NULL);
	if (ret < 0) {
		dev_err(chip->dev, "Failed to add codec subdev\n");
		goto out_codec;
	} else
		dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__);

	return 0;

out_codec:
	device_irq_exit_805(chip);
out_irq_init:
	return ret;
}

static int pm805_probe(struct i2c_client *client,
				 const struct i2c_device_id *id)
{
	int ret = 0;
	struct pm80x_chip *chip;
	struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);

	ret = pm80x_init(client);
	if (ret) {
		dev_err(&client->dev, "pm805_init fail!\n");
		goto out_init;
	}

	chip = i2c_get_clientdata(client);

	ret = device_805_init(chip);
	if (ret) {
		dev_err(chip->dev, "Failed to initialize 88pm805 devices\n");
		goto err_805_init;
	}

	if (pdata && pdata->plat_config)
		pdata->plat_config(chip, pdata);

err_805_init:
	pm80x_deinit();
out_init:
	return ret;
}

static int pm805_remove(struct i2c_client *client)
{
	struct pm80x_chip *chip = i2c_get_clientdata(client);

	mfd_remove_devices(chip->dev);
	device_irq_exit_805(chip);

	pm80x_deinit();

	return 0;
}

static struct i2c_driver pm805_driver = {
	.driver = {
		.name = "88PM805",
		.pm = &pm80x_pm_ops,
		},
	.probe = pm805_probe,
	.remove = pm805_remove,
	.id_table = pm80x_id_table,
};

static int __init pm805_i2c_init(void)
{
	return i2c_add_driver(&pm805_driver);
}
subsys_initcall(pm805_i2c_init);

static void __exit pm805_i2c_exit(void)
{
	i2c_del_driver(&pm805_driver);
}
module_exit(pm805_i2c_exit);

MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");
MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
70c6cce0 QZ	1	/*
	2	* Base driver for Marvell 88PM805
	3	*
	4	* Copyright (C) 2012 Marvell International Ltd.
	5	* Haojian Zhuang <haojian.zhuang@marvell.com>
	6	* Joseph(Yossi) Hanin <yhanin@marvell.com>
	7	* Qiao Zhou <zhouqiao@marvell.com>
	8	*
	9	* This file is subject to the terms and conditions of the GNU General
	10	* Public License. See the file "COPYING" in the main directory of this
	11	* archive for more details.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*/
	22
	23	#include <linux/kernel.h>
	24	#include <linux/module.h>
	25	#include <linux/i2c.h>
	26	#include <linux/irq.h>
	27	#include <linux/mfd/core.h>
	28	#include <linux/mfd/88pm80x.h>
	29	#include <linux/slab.h>
	30	#include <linux/delay.h>
	31
70c6cce0	32	static const struct i2c_device_id pm80x_id_table[] = {
03dcc544	33	{"88PM805", 0},
31b3ffbd	34	{} /* NULL terminated */
70c6cce0 QZ	35	};
	36	MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
	37
	38	/* Interrupt Number in 88PM805 */
	39	enum {
	40	PM805_IRQ_LDO_OFF, /0 /
	41	PM805_IRQ_SRC_DPLL_LOCK, /1 /
	42	PM805_IRQ_CLIP_FAULT,
	43	PM805_IRQ_MIC_CONFLICT,
	44	PM805_IRQ_HP2_SHRT,
	45	PM805_IRQ_HP1_SHRT, /5 /
	46	PM805_IRQ_FINE_PLL_FAULT,
	47	PM805_IRQ_RAW_PLL_FAULT,
	48	PM805_IRQ_VOLP_BTN_DET,
	49	PM805_IRQ_VOLM_BTN_DET,
	50	PM805_IRQ_SHRT_BTN_DET, /10 /
	51	PM805_IRQ_MIC_DET, /11 /
	52
	53	PM805_MAX_IRQ,
	54	};
	55
	56	static struct resource codec_resources[] = {
	57	{
	58	/* Headset microphone insertion or removal */
	59	.name = "micin",
	60	.start = PM805_IRQ_MIC_DET,
	61	.end = PM805_IRQ_MIC_DET,
	62	.flags = IORESOURCE_IRQ,
	63	},
	64	{
	65	/* Audio short HP1 */
	66	.name = "audio-short1",
	67	.start = PM805_IRQ_HP1_SHRT,
	68	.end = PM805_IRQ_HP1_SHRT,
	69	.flags = IORESOURCE_IRQ,
	70	},
	71	{
	72	/* Audio short HP2 */
	73	.name = "audio-short2",
	74	.start = PM805_IRQ_HP2_SHRT,
	75	.end = PM805_IRQ_HP2_SHRT,
	76	.flags = IORESOURCE_IRQ,
	77	},
	78	};
	79
04e02417	80	static const struct mfd_cell codec_devs[] = {
70c6cce0 QZ	81	{
	82	.name = "88pm80x-codec",
	83	.num_resources = ARRAY_SIZE(codec_resources),
	84	.resources = &codec_resources[0],
	85	.id = -1,
	86	},
	87	};
	88
	89	static struct regmap_irq pm805_irqs[] = {
	90	/* INT0 */
	91	[PM805_IRQ_LDO_OFF] = {
	92	.mask = PM805_INT1_HP1_SHRT,
	93	},
	94	[PM805_IRQ_SRC_DPLL_LOCK] = {
	95	.mask = PM805_INT1_HP2_SHRT,
	96	},
	97	[PM805_IRQ_CLIP_FAULT] = {
	98	.mask = PM805_INT1_MIC_CONFLICT,
	99	},
	100	[PM805_IRQ_MIC_CONFLICT] = {
	101	.mask = PM805_INT1_CLIP_FAULT,
	102	},
	103	[PM805_IRQ_HP2_SHRT] = {
	104	.mask = PM805_INT1_LDO_OFF,
	105	},
	106	[PM805_IRQ_HP1_SHRT] = {
	107	.mask = PM805_INT1_SRC_DPLL_LOCK,
	108	},
	109	/* INT1 */
	110	[PM805_IRQ_FINE_PLL_FAULT] = {
	111	.reg_offset = 1,
	112	.mask = PM805_INT2_MIC_DET,
	113	},
	114	[PM805_IRQ_RAW_PLL_FAULT] = {
	115	.reg_offset = 1,
	116	.mask = PM805_INT2_SHRT_BTN_DET,
	117	},
	118	[PM805_IRQ_VOLP_BTN_DET] = {
	119	.reg_offset = 1,
	120	.mask = PM805_INT2_VOLM_BTN_DET,
	121	},
	122	[PM805_IRQ_VOLM_BTN_DET] = {
	123	.reg_offset = 1,
	124	.mask = PM805_INT2_VOLP_BTN_DET,
	125	},
	126	[PM805_IRQ_SHRT_BTN_DET] = {
	127	.reg_offset = 1,
	128	.mask = PM805_INT2_RAW_PLL_FAULT,
	129	},
	130	[PM805_IRQ_MIC_DET] = {
	131	.reg_offset = 1,
	132	.mask = PM805_INT2_FINE_PLL_FAULT,
	133	},
	134	};
	135
f791be49	136	static int device_irq_init_805(struct pm80x_chip *chip)
70c6cce0 QZ	137	{
70c6cce0 QZ	138	struct regmap *map = chip->regmap;
1ef5677e	139	unsigned long flags = IRQF_ONESHOT;
70c6cce0 QZ	140	int data, mask, ret = -EINVAL;
	141
	142	if (!map \|\| !chip->irq) {
	143	dev_err(chip->dev, "incorrect parameters\n");
	144	return -EINVAL;
	145	}
	146
	147	/*
	148	* irq_mode defines the way of clearing interrupt. it's read-clear by
	149	* default.
	150	*/
	151	mask =
	152	PM805_STATUS0_INT_CLEAR \| PM805_STATUS0_INV_INT \|
	153	PM800_STATUS0_INT_MASK;
	154
	155	data = PM805_STATUS0_INT_CLEAR;
	156	ret = regmap_update_bits(map, PM805_INT_STATUS0, mask, data);
	157	/*
	158	* PM805_INT_STATUS is under 32K clock domain, so need to
	159	* add proper delay before the next I2C register access.
	160	*/
dc543929	161	usleep_range(1000, 3000);
70c6cce0 QZ	162
	163	if (ret < 0)
	164	goto out;
	165
	166	ret =
	167	regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
	168	chip->regmap_irq_chip, &chip->irq_data);
	169
	170	out:
	171	return ret;
	172	}
	173
	174	static void device_irq_exit_805(struct pm80x_chip *chip)
	175	{
	176	regmap_del_irq_chip(chip->irq, chip->irq_data);
	177	}
	178
	179	static struct regmap_irq_chip pm805_irq_chip = {
	180	.name = "88pm805",
	181	.irqs = pm805_irqs,
	182	.num_irqs = ARRAY_SIZE(pm805_irqs),
	183
	184	.num_regs = 2,
	185	.status_base = PM805_INT_STATUS1,
	186	.mask_base = PM805_INT_MASK1,
	187	.ack_base = PM805_INT_STATUS1,
	188	};
	189
f791be49	190	static int device_805_init(struct pm80x_chip *chip)
70c6cce0 QZ	191	{
	192	int ret = 0;
	193	struct regmap *map = chip->regmap;
	194
	195	if (!map) {
	196	dev_err(chip->dev, "regmap is invalid\n");
	197	return -EINVAL;
	198	}
	199
70c6cce0 QZ	200	chip->regmap_irq_chip = &pm805_irq_chip;
	201
	202	ret = device_irq_init_805(chip);
	203	if (ret < 0) {
	204	dev_err(chip->dev, "Failed to init pm805 irq!\n");
	205	goto out_irq_init;
	206	}
	207
	208	ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
0848c94f MB	209	ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
0848c94f MB	210	NULL);
70c6cce0 QZ	211	if (ret < 0) {
	212	dev_err(chip->dev, "Failed to add codec subdev\n");
	213	goto out_codec;
	214	} else
	215	dev_info(chip->dev, "[%s]:Added mfd codec_devs\n", __func__);
	216
	217	return 0;
	218
	219	out_codec:
	220	device_irq_exit_805(chip);
	221	out_irq_init:
	222	return ret;
	223	}
	224
f791be49	225	static int pm805_probe(struct i2c_client *client,
70c6cce0 QZ	226	const struct i2c_device_id *id)
	227	{
	228	int ret = 0;
	229	struct pm80x_chip *chip;
334a41ce	230	struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
70c6cce0	231
03dcc544	232	ret = pm80x_init(client);
70c6cce0 QZ	233	if (ret) {
	234	dev_err(&client->dev, "pm805_init fail!\n");
	235	goto out_init;
	236	}
	237
	238	chip = i2c_get_clientdata(client);
	239
	240	ret = device_805_init(chip);
	241	if (ret) {
03dcc544	242	dev_err(chip->dev, "Failed to initialize 88pm805 devices\n");
70c6cce0 QZ	243	goto err_805_init;
	244	}
	245
2b274fe5	246	if (pdata && pdata->plat_config)
70c6cce0 QZ	247	pdata->plat_config(chip, pdata);
	248
	249	err_805_init:
306df798	250	pm80x_deinit();
70c6cce0 QZ	251	out_init:
	252	return ret;
	253	}
	254
4740f73f	255	static int pm805_remove(struct i2c_client *client)
70c6cce0 QZ	256	{
	257	struct pm80x_chip *chip = i2c_get_clientdata(client);
	258
	259	mfd_remove_devices(chip->dev);
	260	device_irq_exit_805(chip);
	261
306df798	262	pm80x_deinit();
70c6cce0 QZ	263
	264	return 0;
	265	}
	266
	267	static struct i2c_driver pm805_driver = {
	268	.driver = {
46223a19	269	.name = "88PM805",
70c6cce0 QZ	270	.pm = &pm80x_pm_ops,
	271	},
	272	.probe = pm805_probe,
84449216	273	.remove = pm805_remove,
70c6cce0 QZ	274	.id_table = pm80x_id_table,
	275	};
	276
	277	static int __init pm805_i2c_init(void)
	278	{
	279	return i2c_add_driver(&pm805_driver);
	280	}
	281	subsys_initcall(pm805_i2c_init);
	282
	283	static void __exit pm805_i2c_exit(void)
	284	{
	285	i2c_del_driver(&pm805_driver);
	286	}
	287	module_exit(pm805_i2c_exit);
	288
	289	MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM805");
	290	MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
	291	MODULE_LICENSE("GPL");