[linux.git] / drivers / iio / health / afe440x.h

/*
 * AFE440X Heart Rate Monitors and Low-Cost Pulse Oximeters
 *
 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
 *	Andrew F. Davis <[email protected]>
 *
 * 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 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.
 */

#ifndef _AFE440X_H
#define _AFE440X_H

/* AFE440X registers */
#define AFE440X_CONTROL0		0x00
#define AFE440X_LED2STC			0x01
#define AFE440X_LED2ENDC		0x02
#define AFE440X_LED1LEDSTC		0x03
#define AFE440X_LED1LEDENDC		0x04
#define AFE440X_ALED2STC		0x05
#define AFE440X_ALED2ENDC		0x06
#define AFE440X_LED1STC			0x07
#define AFE440X_LED1ENDC		0x08
#define AFE440X_LED2LEDSTC		0x09
#define AFE440X_LED2LEDENDC		0x0a
#define AFE440X_ALED1STC		0x0b
#define AFE440X_ALED1ENDC		0x0c
#define AFE440X_LED2CONVST		0x0d
#define AFE440X_LED2CONVEND		0x0e
#define AFE440X_ALED2CONVST		0x0f
#define AFE440X_ALED2CONVEND		0x10
#define AFE440X_LED1CONVST		0x11
#define AFE440X_LED1CONVEND		0x12
#define AFE440X_ALED1CONVST		0x13
#define AFE440X_ALED1CONVEND		0x14
#define AFE440X_ADCRSTSTCT0		0x15
#define AFE440X_ADCRSTENDCT0		0x16
#define AFE440X_ADCRSTSTCT1		0x17
#define AFE440X_ADCRSTENDCT1		0x18
#define AFE440X_ADCRSTSTCT2		0x19
#define AFE440X_ADCRSTENDCT2		0x1a
#define AFE440X_ADCRSTSTCT3		0x1b
#define AFE440X_ADCRSTENDCT3		0x1c
#define AFE440X_PRPCOUNT		0x1d
#define AFE440X_CONTROL1		0x1e
#define AFE440X_LEDCNTRL		0x22
#define AFE440X_CONTROL2		0x23
#define AFE440X_ALARM			0x29
#define AFE440X_LED2VAL			0x2a
#define AFE440X_ALED2VAL		0x2b
#define AFE440X_LED1VAL			0x2c
#define AFE440X_ALED1VAL		0x2d
#define AFE440X_LED2_ALED2VAL		0x2e
#define AFE440X_LED1_ALED1VAL		0x2f
#define AFE440X_CONTROL3		0x31
#define AFE440X_PDNCYCLESTC		0x32
#define AFE440X_PDNCYCLEENDC		0x33

/* CONTROL0 register fields */
#define AFE440X_CONTROL0_REG_READ	BIT(0)
#define AFE440X_CONTROL0_TM_COUNT_RST	BIT(1)
#define AFE440X_CONTROL0_SW_RESET	BIT(3)

/* CONTROL1 register fields */
#define AFE440X_CONTROL1_TIMEREN	BIT(8)

/* TIAGAIN register fields */
#define AFE440X_TIAGAIN_ENSEPGAIN	BIT(15)

/* CONTROL2 register fields */
#define AFE440X_CONTROL2_PDN_AFE	BIT(0)
#define AFE440X_CONTROL2_PDN_RX		BIT(1)
#define AFE440X_CONTROL2_DYNAMIC4	BIT(3)
#define AFE440X_CONTROL2_DYNAMIC3	BIT(4)
#define AFE440X_CONTROL2_DYNAMIC2	BIT(14)
#define AFE440X_CONTROL2_DYNAMIC1	BIT(20)

/* CONTROL3 register fields */
#define AFE440X_CONTROL3_CLKDIV		GENMASK(2, 0)

/* CONTROL0 values */
#define AFE440X_CONTROL0_WRITE		0x0
#define AFE440X_CONTROL0_READ		0x1

#define AFE440X_INTENSITY_CHAN(_index, _mask)			\
	{							\
		.type = IIO_INTENSITY,				\
		.channel = _index,				\
		.address = _index,				\
		.scan_index = _index,				\
		.scan_type = {					\
				.sign = 's',			\
				.realbits = 24,			\
				.storagebits = 32,		\
				.endianness = IIO_CPU,		\
		},						\
		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
			_mask,					\
		.indexed = true,				\
	}

#define AFE440X_CURRENT_CHAN(_index)				\
	{							\
		.type = IIO_CURRENT,				\
		.channel = _index,				\
		.address = _index,				\
		.scan_index = -1,				\
		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
			BIT(IIO_CHAN_INFO_SCALE),		\
		.indexed = true,				\
		.output = true,					\
	}

struct afe440x_val_table {
	int integer;
	int fract;
};

#define AFE440X_TABLE_ATTR(_name, _table)				\
static ssize_t _name ## _show(struct device *dev,			\
			      struct device_attribute *attr, char *buf)	\
{									\
	ssize_t len = 0;						\
	int i;								\
									\
	for (i = 0; i < ARRAY_SIZE(_table); i++)			\
		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06u ", \
				 _table[i].integer,			\
				 _table[i].fract);			\
									\
	buf[len - 1] = '\n';						\
									\
	return len;							\
}									\
static DEVICE_ATTR_RO(_name)

struct afe440x_attr {
	struct device_attribute dev_attr;
	unsigned int field;
	const struct afe440x_val_table *val_table;
	unsigned int table_size;
};

#define to_afe440x_attr(_dev_attr)				\
	container_of(_dev_attr, struct afe440x_attr, dev_attr)

#define AFE440X_ATTR(_name, _field, _table)			\
	struct afe440x_attr afe440x_attr_##_name = {		\
		.dev_attr = __ATTR(_name, (S_IRUGO | S_IWUSR),	\
				   afe440x_show_register,	\
				   afe440x_store_register),	\
		.field = _field,				\
		.val_table = _table,				\
		.table_size = ARRAY_SIZE(_table),		\
	}

#endif /* _AFE440X_H */
Commit	Line	Data
87aec56e AD	1	/*
	2	* AFE440X Heart Rate Monitors and Low-Cost Pulse Oximeters
	3	*
	4	* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
	5	* Andrew F. Davis <[email protected]>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*
	11	* This program is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*/
	16
	17	#ifndef _AFE440X_H
	18	#define _AFE440X_H
	19
	20	/* AFE440X registers */
	21	#define AFE440X_CONTROL0 0x00
	22	#define AFE440X_LED2STC 0x01
	23	#define AFE440X_LED2ENDC 0x02
	24	#define AFE440X_LED1LEDSTC 0x03
	25	#define AFE440X_LED1LEDENDC 0x04
	26	#define AFE440X_ALED2STC 0x05
	27	#define AFE440X_ALED2ENDC 0x06
	28	#define AFE440X_LED1STC 0x07
	29	#define AFE440X_LED1ENDC 0x08
	30	#define AFE440X_LED2LEDSTC 0x09
	31	#define AFE440X_LED2LEDENDC 0x0a
	32	#define AFE440X_ALED1STC 0x0b
	33	#define AFE440X_ALED1ENDC 0x0c
	34	#define AFE440X_LED2CONVST 0x0d
	35	#define AFE440X_LED2CONVEND 0x0e
	36	#define AFE440X_ALED2CONVST 0x0f
	37	#define AFE440X_ALED2CONVEND 0x10
	38	#define AFE440X_LED1CONVST 0x11
	39	#define AFE440X_LED1CONVEND 0x12
	40	#define AFE440X_ALED1CONVST 0x13
	41	#define AFE440X_ALED1CONVEND 0x14
	42	#define AFE440X_ADCRSTSTCT0 0x15
	43	#define AFE440X_ADCRSTENDCT0 0x16
	44	#define AFE440X_ADCRSTSTCT1 0x17
	45	#define AFE440X_ADCRSTENDCT1 0x18
	46	#define AFE440X_ADCRSTSTCT2 0x19
	47	#define AFE440X_ADCRSTENDCT2 0x1a
	48	#define AFE440X_ADCRSTSTCT3 0x1b
	49	#define AFE440X_ADCRSTENDCT3 0x1c
	50	#define AFE440X_PRPCOUNT 0x1d
	51	#define AFE440X_CONTROL1 0x1e
	52	#define AFE440X_LEDCNTRL 0x22
	53	#define AFE440X_CONTROL2 0x23
	54	#define AFE440X_ALARM 0x29
	55	#define AFE440X_LED2VAL 0x2a
	56	#define AFE440X_ALED2VAL 0x2b
	57	#define AFE440X_LED1VAL 0x2c
	58	#define AFE440X_ALED1VAL 0x2d
	59	#define AFE440X_LED2_ALED2VAL 0x2e
	60	#define AFE440X_LED1_ALED1VAL 0x2f
	61	#define AFE440X_CONTROL3 0x31
	62	#define AFE440X_PDNCYCLESTC 0x32
	63	#define AFE440X_PDNCYCLEENDC 0x33
	64
65	/* CONTROL0 register fields */
66	#define AFE440X_CONTROL0_REG_READ BIT(0)
67	#define AFE440X_CONTROL0_TM_COUNT_RST BIT(1)
68	#define AFE440X_CONTROL0_SW_RESET BIT(3)
69
70	/* CONTROL1 register fields */
71	#define AFE440X_CONTROL1_TIMEREN BIT(8)
72
73	/* TIAGAIN register fields */
81f51727	74	#define AFE440X_TIAGAIN_ENSEPGAIN BIT(15)
87aec56e AD	75
	76	/* CONTROL2 register fields */
	77	#define AFE440X_CONTROL2_PDN_AFE BIT(0)
	78	#define AFE440X_CONTROL2_PDN_RX BIT(1)
	79	#define AFE440X_CONTROL2_DYNAMIC4 BIT(3)
	80	#define AFE440X_CONTROL2_DYNAMIC3 BIT(4)
	81	#define AFE440X_CONTROL2_DYNAMIC2 BIT(14)
	82	#define AFE440X_CONTROL2_DYNAMIC1 BIT(20)
	83
	84	/* CONTROL3 register fields */
	85	#define AFE440X_CONTROL3_CLKDIV GENMASK(2, 0)
	86
	87	/* CONTROL0 values */
	88	#define AFE440X_CONTROL0_WRITE 0x0
	89	#define AFE440X_CONTROL0_READ 0x1
	90
24b9dea7	91	#define AFE440X_INTENSITY_CHAN(_index, _mask) \
87aec56e AD	92	{ \
	93	.type = IIO_INTENSITY, \
	94	.channel = _index, \
	95	.address = _index, \
	96	.scan_index = _index, \
	97	.scan_type = { \
	98	.sign = 's', \
	99	.realbits = 24, \
	100	.storagebits = 32, \
	101	.endianness = IIO_CPU, \
	102	}, \
87aec56e AD	103	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) \| \
87aec56e AD	104	_mask, \
24b9dea7	105	.indexed = true, \
87aec56e AD	106	}
87aec56e AD	107
24b9dea7	108	#define AFE440X_CURRENT_CHAN(_index) \
87aec56e AD	109	{ \
	110	.type = IIO_CURRENT, \
	111	.channel = _index, \
	112	.address = _index, \
9d3d9a57	113	.scan_index = -1, \
87aec56e AD	114	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) \| \
87aec56e AD	115	BIT(IIO_CHAN_INFO_SCALE), \
24b9dea7	116	.indexed = true, \
87aec56e AD	117	.output = true, \
	118	}
	119
87aec56e AD	120	struct afe440x_val_table {
	121	int integer;
	122	int fract;
	123	};
	124
	125	#define AFE440X_TABLE_ATTR(_name, _table) \
	126	static ssize_t _name ## _show(struct device *dev, \
	127	struct device_attribute attr, char buf) \
	128	{ \
	129	ssize_t len = 0; \
	130	int i; \
	131	\
	132	for (i = 0; i < ARRAY_SIZE(_table); i++) \
	133	len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06u ", \
	134	_table[i].integer, \
	135	_table[i].fract); \
	136	\
	137	buf[len - 1] = '\n'; \
	138	\
	139	return len; \
	140	} \
	141	static DEVICE_ATTR_RO(_name)
	142
	143	struct afe440x_attr {
	144	struct device_attribute dev_attr;
b36e8257	145	unsigned int field;
87aec56e AD	146	const struct afe440x_val_table *val_table;
	147	unsigned int table_size;
	148	};
	149
	150	#define to_afe440x_attr(_dev_attr) \
	151	container_of(_dev_attr, struct afe440x_attr, dev_attr)
	152
b36e8257	153	#define AFE440X_ATTR(_name, _field, _table) \
87aec56e AD	154	struct afe440x_attr afe440x_attr_##_name = { \
	155	.dev_attr = __ATTR(_name, (S_IRUGO \| S_IWUSR), \
	156	afe440x_show_register, \
	157	afe440x_store_register), \
b36e8257	158	.field = _field, \
87aec56e	159	.val_table = _table, \
81f51727	160	.table_size = ARRAY_SIZE(_table), \
87aec56e AD	161	}
	162
	163	#endif /* _AFE440X_H */