You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
163 lines
4.6 KiB
163 lines
4.6 KiB
/*
|
|
* AFE440X Heart Rate Monitors and Low-Cost Pulse Oximeters
|
|
*
|
|
* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Andrew F. Davis <afd@ti.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 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 */
|
|
|