[linux-2.6-block.git] / drivers / mfd / bd9571mwv.c

/*
 * ROHM BD9571MWV-M MFD driver
 *
 * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether expressed or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.
 *
 * Based on the TPS65086 driver
 */

#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>

#include <linux/mfd/bd9571mwv.h>

static const struct mfd_cell bd9571mwv_cells[] = {
	{ .name = "bd9571mwv-regulator", },
	{ .name = "bd9571mwv-gpio", },
};

static const struct regmap_range bd9571mwv_readable_yes_ranges[] = {
	regmap_reg_range(BD9571MWV_VENDOR_CODE, BD9571MWV_PRODUCT_REVISION),
	regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
	regmap_reg_range(BD9571MWV_AVS_SET_MONI, BD9571MWV_AVS_DVFS_VID(3)),
	regmap_reg_range(BD9571MWV_VD18_VID, BD9571MWV_VD33_VID),
	regmap_reg_range(BD9571MWV_DVFS_VINIT, BD9571MWV_DVFS_VINIT),
	regmap_reg_range(BD9571MWV_DVFS_SETVMAX, BD9571MWV_DVFS_MONIVDAC),
	regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
	regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INTMASK),
	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};

static const struct regmap_access_table bd9571mwv_readable_table = {
	.yes_ranges	= bd9571mwv_readable_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(bd9571mwv_readable_yes_ranges),
};

static const struct regmap_range bd9571mwv_writable_yes_ranges[] = {
	regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
	regmap_reg_range(BD9571MWV_AVS_VD09_VID(0), BD9571MWV_AVS_VD09_VID(3)),
	regmap_reg_range(BD9571MWV_DVFS_SETVID, BD9571MWV_DVFS_SETVID),
	regmap_reg_range(BD9571MWV_GPIO_DIR, BD9571MWV_GPIO_OUT),
	regmap_reg_range(BD9571MWV_GPIO_INT_SET, BD9571MWV_GPIO_INTMASK),
	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};

static const struct regmap_access_table bd9571mwv_writable_table = {
	.yes_ranges	= bd9571mwv_writable_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(bd9571mwv_writable_yes_ranges),
};

static const struct regmap_range bd9571mwv_volatile_yes_ranges[] = {
	regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
	regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INT),
	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTREQ),
};

static const struct regmap_access_table bd9571mwv_volatile_table = {
	.yes_ranges	= bd9571mwv_volatile_yes_ranges,
	.n_yes_ranges	= ARRAY_SIZE(bd9571mwv_volatile_yes_ranges),
};

static const struct regmap_config bd9571mwv_regmap_config = {
	.reg_bits	= 8,
	.val_bits	= 8,
	.cache_type	= REGCACHE_RBTREE,
	.rd_table	= &bd9571mwv_readable_table,
	.wr_table	= &bd9571mwv_writable_table,
	.volatile_table	= &bd9571mwv_volatile_table,
	.max_register	= 0xff,
};

static const struct regmap_irq bd9571mwv_irqs[] = {
	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD1, 0,
		       BD9571MWV_INT_INTREQ_MD1_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E1, 0,
		       BD9571MWV_INT_INTREQ_MD2_E1_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E2, 0,
		       BD9571MWV_INT_INTREQ_MD2_E2_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_PROT_ERR, 0,
		       BD9571MWV_INT_INTREQ_PROT_ERR_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_GP, 0,
		       BD9571MWV_INT_INTREQ_GP_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_128H_OF, 0,
		       BD9571MWV_INT_INTREQ_128H_OF_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_WDT_OF, 0,
		       BD9571MWV_INT_INTREQ_WDT_OF_INT),
	REGMAP_IRQ_REG(BD9571MWV_IRQ_BKUP_TRG, 0,
		       BD9571MWV_INT_INTREQ_BKUP_TRG_INT),
};

static struct regmap_irq_chip bd9571mwv_irq_chip = {
	.name		= "bd9571mwv",
	.status_base	= BD9571MWV_INT_INTREQ,
	.mask_base	= BD9571MWV_INT_INTMASK,
	.ack_base	= BD9571MWV_INT_INTREQ,
	.init_ack_masked = true,
	.num_regs	= 1,
	.irqs		= bd9571mwv_irqs,
	.num_irqs	= ARRAY_SIZE(bd9571mwv_irqs),
};

static int bd9571mwv_identify(struct bd9571mwv *bd)
{
	struct device *dev = bd->dev;
	unsigned int value;
	int ret;

	ret = regmap_read(bd->regmap, BD9571MWV_VENDOR_CODE, &value);
	if (ret) {
		dev_err(dev, "Failed to read vendor code register (ret=%i)\n",
			ret);
		return ret;
	}

	if (value != BD9571MWV_VENDOR_CODE_VAL) {
		dev_err(dev, "Invalid vendor code ID %02x (expected %02x)\n",
			value, BD9571MWV_VENDOR_CODE_VAL);
		return -EINVAL;
	}

	ret = regmap_read(bd->regmap, BD9571MWV_PRODUCT_CODE, &value);
	if (ret) {
		dev_err(dev, "Failed to read product code register (ret=%i)\n",
			ret);
		return ret;
	}

	if (value != BD9571MWV_PRODUCT_CODE_VAL) {
		dev_err(dev, "Invalid product code ID %02x (expected %02x)\n",
			value, BD9571MWV_PRODUCT_CODE_VAL);
		return -EINVAL;
	}

	ret = regmap_read(bd->regmap, BD9571MWV_PRODUCT_REVISION, &value);
	if (ret) {
		dev_err(dev, "Failed to read revision register (ret=%i)\n",
			ret);
		return ret;
	}

	dev_info(dev, "Device: BD9571MWV rev. %d\n", value & 0xff);

	return 0;
}

static int bd9571mwv_probe(struct i2c_client *client,
			  const struct i2c_device_id *ids)
{
	struct bd9571mwv *bd;
	int ret;

	bd = devm_kzalloc(&client->dev, sizeof(*bd), GFP_KERNEL);
	if (!bd)
		return -ENOMEM;

	i2c_set_clientdata(client, bd);
	bd->dev = &client->dev;
	bd->irq = client->irq;

	bd->regmap = devm_regmap_init_i2c(client, &bd9571mwv_regmap_config);
	if (IS_ERR(bd->regmap)) {
		dev_err(bd->dev, "Failed to initialize register map\n");
		return PTR_ERR(bd->regmap);
	}

	ret = bd9571mwv_identify(bd);
	if (ret)
		return ret;

	ret = regmap_add_irq_chip(bd->regmap, bd->irq, IRQF_ONESHOT, 0,
				  &bd9571mwv_irq_chip, &bd->irq_data);
	if (ret) {
		dev_err(bd->dev, "Failed to register IRQ chip\n");
		return ret;
	}

	ret = mfd_add_devices(bd->dev, PLATFORM_DEVID_AUTO, bd9571mwv_cells,
			      ARRAY_SIZE(bd9571mwv_cells), NULL, 0,
			      regmap_irq_get_domain(bd->irq_data));
	if (ret) {
		regmap_del_irq_chip(bd->irq, bd->irq_data);
		return ret;
	}

	return 0;
}

static int bd9571mwv_remove(struct i2c_client *client)
{
	struct bd9571mwv *bd = i2c_get_clientdata(client);

	regmap_del_irq_chip(bd->irq, bd->irq_data);

	return 0;
}

static const struct of_device_id bd9571mwv_of_match_table[] = {
	{ .compatible = "rohm,bd9571mwv", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, bd9571mwv_of_match_table);

static const struct i2c_device_id bd9571mwv_id_table[] = {
	{ "bd9571mwv", 0 },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, bd9571mwv_id_table);

static struct i2c_driver bd9571mwv_driver = {
	.driver		= {
		.name	= "bd9571mwv",
		.of_match_table = bd9571mwv_of_match_table,
	},
	.probe		= bd9571mwv_probe,
	.remove		= bd9571mwv_remove,
	.id_table       = bd9571mwv_id_table,
};
module_i2c_driver(bd9571mwv_driver);

MODULE_AUTHOR("Marek Vasut <marek.vasut+renesas@gmail.com>");
MODULE_DESCRIPTION("BD9571MWV PMIC Driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
d3ea2127 MV	1	/*
	2	* ROHM BD9571MWV-M MFD driver
	3	*
	4	* Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* This program is distributed "as is" WITHOUT ANY WARRANTY of any
	11	* kind, whether expressed or implied; without even the implied warranty
	12	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License version 2 for more details.
	14	*
	15	* Based on the TPS65086 driver
	16	*/
	17
	18	#include <linux/i2c.h>
	19	#include <linux/interrupt.h>
	20	#include <linux/mfd/core.h>
	21	#include <linux/module.h>
	22
	23	#include <linux/mfd/bd9571mwv.h>
	24
	25	static const struct mfd_cell bd9571mwv_cells[] = {
	26	{ .name = "bd9571mwv-regulator", },
	27	{ .name = "bd9571mwv-gpio", },
	28	};
	29
	30	static const struct regmap_range bd9571mwv_readable_yes_ranges[] = {
	31	regmap_reg_range(BD9571MWV_VENDOR_CODE, BD9571MWV_PRODUCT_REVISION),
7b569bcb	32	regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
d3ea2127 MV	33	regmap_reg_range(BD9571MWV_AVS_SET_MONI, BD9571MWV_AVS_DVFS_VID(3)),
	34	regmap_reg_range(BD9571MWV_VD18_VID, BD9571MWV_VD33_VID),
	35	regmap_reg_range(BD9571MWV_DVFS_VINIT, BD9571MWV_DVFS_VINIT),
	36	regmap_reg_range(BD9571MWV_DVFS_SETVMAX, BD9571MWV_DVFS_MONIVDAC),
	37	regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
	38	regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INTMASK),
	39	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
	40	};
	41
	42	static const struct regmap_access_table bd9571mwv_readable_table = {
	43	.yes_ranges = bd9571mwv_readable_yes_ranges,
	44	.n_yes_ranges = ARRAY_SIZE(bd9571mwv_readable_yes_ranges),
	45	};
	46
	47	static const struct regmap_range bd9571mwv_writable_yes_ranges[] = {
7b569bcb	48	regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
d3ea2127 MV	49	regmap_reg_range(BD9571MWV_AVS_VD09_VID(0), BD9571MWV_AVS_VD09_VID(3)),
	50	regmap_reg_range(BD9571MWV_DVFS_SETVID, BD9571MWV_DVFS_SETVID),
	51	regmap_reg_range(BD9571MWV_GPIO_DIR, BD9571MWV_GPIO_OUT),
	52	regmap_reg_range(BD9571MWV_GPIO_INT_SET, BD9571MWV_GPIO_INTMASK),
	53	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
	54	};
	55
	56	static const struct regmap_access_table bd9571mwv_writable_table = {
	57	.yes_ranges = bd9571mwv_writable_yes_ranges,
	58	.n_yes_ranges = ARRAY_SIZE(bd9571mwv_writable_yes_ranges),
	59	};
	60
	61	static const struct regmap_range bd9571mwv_volatile_yes_ranges[] = {
	62	regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
	63	regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INT),
	64	regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTREQ),
	65	};
	66
	67	static const struct regmap_access_table bd9571mwv_volatile_table = {
	68	.yes_ranges = bd9571mwv_volatile_yes_ranges,
	69	.n_yes_ranges = ARRAY_SIZE(bd9571mwv_volatile_yes_ranges),
	70	};
	71
	72	static const struct regmap_config bd9571mwv_regmap_config = {
	73	.reg_bits = 8,
	74	.val_bits = 8,
	75	.cache_type = REGCACHE_RBTREE,
	76	.rd_table = &bd9571mwv_readable_table,
	77	.wr_table = &bd9571mwv_writable_table,
	78	.volatile_table = &bd9571mwv_volatile_table,
	79	.max_register = 0xff,
	80	};
	81
	82	static const struct regmap_irq bd9571mwv_irqs[] = {
	83	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD1, 0,
	84	BD9571MWV_INT_INTREQ_MD1_INT),
	85	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E1, 0,
	86	BD9571MWV_INT_INTREQ_MD2_E1_INT),
	87	REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E2, 0,
	88	BD9571MWV_INT_INTREQ_MD2_E2_INT),
	89	REGMAP_IRQ_REG(BD9571MWV_IRQ_PROT_ERR, 0,
	90	BD9571MWV_INT_INTREQ_PROT_ERR_INT),
	91	REGMAP_IRQ_REG(BD9571MWV_IRQ_GP, 0,
	92	BD9571MWV_INT_INTREQ_GP_INT),
	93	REGMAP_IRQ_REG(BD9571MWV_IRQ_128H_OF, 0,
	94	BD9571MWV_INT_INTREQ_128H_OF_INT),
	95	REGMAP_IRQ_REG(BD9571MWV_IRQ_WDT_OF, 0,
	96	BD9571MWV_INT_INTREQ_WDT_OF_INT),
	97	REGMAP_IRQ_REG(BD9571MWV_IRQ_BKUP_TRG, 0,
	98	BD9571MWV_INT_INTREQ_BKUP_TRG_INT),
	99	};
	100
	101	static struct regmap_irq_chip bd9571mwv_irq_chip = {
	102	.name = "bd9571mwv",
	103	.status_base = BD9571MWV_INT_INTREQ,
	104	.mask_base = BD9571MWV_INT_INTMASK,
	105	.ack_base = BD9571MWV_INT_INTREQ,
	106	.init_ack_masked = true,
	107	.num_regs = 1,
	108	.irqs = bd9571mwv_irqs,
	109	.num_irqs = ARRAY_SIZE(bd9571mwv_irqs),
	110	};
	111
	112	static int bd9571mwv_identify(struct bd9571mwv *bd)
113	{
114	struct device *dev = bd->dev;
115	unsigned int value;
116	int ret;
117
118	ret = regmap_read(bd->regmap, BD9571MWV_VENDOR_CODE, &value);
119	if (ret) {
120	dev_err(dev, "Failed to read vendor code register (ret=%i)\n",
121	ret);
122	return ret;
123	}
124
125	if (value != BD9571MWV_VENDOR_CODE_VAL) {
126	dev_err(dev, "Invalid vendor code ID %02x (expected %02x)\n",
127	value, BD9571MWV_VENDOR_CODE_VAL);
128	return -EINVAL;
129	}
130
131	ret = regmap_read(bd->regmap, BD9571MWV_PRODUCT_CODE, &value);
132	if (ret) {
133	dev_err(dev, "Failed to read product code register (ret=%i)\n",
134	ret);
135	return ret;
136	}
137
138	if (value != BD9571MWV_PRODUCT_CODE_VAL) {
139	dev_err(dev, "Invalid product code ID %02x (expected %02x)\n",
140	value, BD9571MWV_PRODUCT_CODE_VAL);
141	return -EINVAL;
142	}
143
144	ret = regmap_read(bd->regmap, BD9571MWV_PRODUCT_REVISION, &value);
145	if (ret) {
146	dev_err(dev, "Failed to read revision register (ret=%i)\n",
147	ret);
148	return ret;
149	}
150
151	dev_info(dev, "Device: BD9571MWV rev. %d\n", value & 0xff);
152
153	return 0;
154	}
155
156	static int bd9571mwv_probe(struct i2c_client *client,
157	const struct i2c_device_id *ids)
158	{
159	struct bd9571mwv *bd;
160	int ret;
161
162	bd = devm_kzalloc(&client->dev, sizeof(*bd), GFP_KERNEL);
163	if (!bd)
164	return -ENOMEM;
165
166	i2c_set_clientdata(client, bd);
167	bd->dev = &client->dev;
168	bd->irq = client->irq;
169
170	bd->regmap = devm_regmap_init_i2c(client, &bd9571mwv_regmap_config);
171	if (IS_ERR(bd->regmap)) {
172	dev_err(bd->dev, "Failed to initialize register map\n");
173	return PTR_ERR(bd->regmap);
174	}
175
176	ret = bd9571mwv_identify(bd);
177	if (ret)
178	return ret;
179
180	ret = regmap_add_irq_chip(bd->regmap, bd->irq, IRQF_ONESHOT, 0,
181	&bd9571mwv_irq_chip, &bd->irq_data);
182	if (ret) {
183	dev_err(bd->dev, "Failed to register IRQ chip\n");
184	return ret;
185	}
186
187	ret = mfd_add_devices(bd->dev, PLATFORM_DEVID_AUTO, bd9571mwv_cells,
188	ARRAY_SIZE(bd9571mwv_cells), NULL, 0,
189	regmap_irq_get_domain(bd->irq_data));
190	if (ret) {
191	regmap_del_irq_chip(bd->irq, bd->irq_data);
192	return ret;
193	}
194
195	return 0;
196	}
197
198	static int bd9571mwv_remove(struct i2c_client *client)
199	{
200	struct bd9571mwv *bd = i2c_get_clientdata(client);
201
202	regmap_del_irq_chip(bd->irq, bd->irq_data);
203
204	return 0;
205	}
206
207	static const struct of_device_id bd9571mwv_of_match_table[] = {
208	{ .compatible = "rohm,bd9571mwv", },
209	{ /* sentinel */ }
210	};
211	MODULE_DEVICE_TABLE(of, bd9571mwv_of_match_table);
212
213	static const struct i2c_device_id bd9571mwv_id_table[] = {
214	{ "bd9571mwv", 0 },
215	{ /* sentinel */ }
216	};
217	MODULE_DEVICE_TABLE(i2c, bd9571mwv_id_table);
218
219	static struct i2c_driver bd9571mwv_driver = {
220	.driver = {
221	.name = "bd9571mwv",
222	.of_match_table = bd9571mwv_of_match_table,
223	},
224	.probe = bd9571mwv_probe,
225	.remove = bd9571mwv_remove,
226	.id_table = bd9571mwv_id_table,
227	};
228	module_i2c_driver(bd9571mwv_driver);
229
230	MODULE_AUTHOR("Marek Vasut <marek.vasut+renesas@gmail.com>");
231	MODULE_DESCRIPTION("BD9571MWV PMIC Driver");
232	MODULE_LICENSE("GPL v2");