156 lines · c
1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * AFE440X Heart Rate Monitors and Low-Cost Pulse Oximeters4 *5 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/6 * Andrew F. Davis <afd@ti.com>7 */8 9#ifndef _AFE440X_H10#define _AFE440X_H11 12/* AFE440X registers */13#define AFE440X_CONTROL0 0x0014#define AFE440X_LED2STC 0x0115#define AFE440X_LED2ENDC 0x0216#define AFE440X_LED1LEDSTC 0x0317#define AFE440X_LED1LEDENDC 0x0418#define AFE440X_ALED2STC 0x0519#define AFE440X_ALED2ENDC 0x0620#define AFE440X_LED1STC 0x0721#define AFE440X_LED1ENDC 0x0822#define AFE440X_LED2LEDSTC 0x0923#define AFE440X_LED2LEDENDC 0x0a24#define AFE440X_ALED1STC 0x0b25#define AFE440X_ALED1ENDC 0x0c26#define AFE440X_LED2CONVST 0x0d27#define AFE440X_LED2CONVEND 0x0e28#define AFE440X_ALED2CONVST 0x0f29#define AFE440X_ALED2CONVEND 0x1030#define AFE440X_LED1CONVST 0x1131#define AFE440X_LED1CONVEND 0x1232#define AFE440X_ALED1CONVST 0x1333#define AFE440X_ALED1CONVEND 0x1434#define AFE440X_ADCRSTSTCT0 0x1535#define AFE440X_ADCRSTENDCT0 0x1636#define AFE440X_ADCRSTSTCT1 0x1737#define AFE440X_ADCRSTENDCT1 0x1838#define AFE440X_ADCRSTSTCT2 0x1939#define AFE440X_ADCRSTENDCT2 0x1a40#define AFE440X_ADCRSTSTCT3 0x1b41#define AFE440X_ADCRSTENDCT3 0x1c42#define AFE440X_PRPCOUNT 0x1d43#define AFE440X_CONTROL1 0x1e44#define AFE440X_LEDCNTRL 0x2245#define AFE440X_CONTROL2 0x2346#define AFE440X_ALARM 0x2947#define AFE440X_LED2VAL 0x2a48#define AFE440X_ALED2VAL 0x2b49#define AFE440X_LED1VAL 0x2c50#define AFE440X_ALED1VAL 0x2d51#define AFE440X_LED2_ALED2VAL 0x2e52#define AFE440X_LED1_ALED1VAL 0x2f53#define AFE440X_CONTROL3 0x3154#define AFE440X_PDNCYCLESTC 0x3255#define AFE440X_PDNCYCLEENDC 0x3356 57/* CONTROL0 register fields */58#define AFE440X_CONTROL0_REG_READ BIT(0)59#define AFE440X_CONTROL0_TM_COUNT_RST BIT(1)60#define AFE440X_CONTROL0_SW_RESET BIT(3)61 62/* CONTROL1 register fields */63#define AFE440X_CONTROL1_TIMEREN BIT(8)64 65/* TIAGAIN register fields */66#define AFE440X_TIAGAIN_ENSEPGAIN BIT(15)67 68/* CONTROL2 register fields */69#define AFE440X_CONTROL2_PDN_AFE BIT(0)70#define AFE440X_CONTROL2_PDN_RX BIT(1)71#define AFE440X_CONTROL2_DYNAMIC4 BIT(3)72#define AFE440X_CONTROL2_DYNAMIC3 BIT(4)73#define AFE440X_CONTROL2_DYNAMIC2 BIT(14)74#define AFE440X_CONTROL2_DYNAMIC1 BIT(20)75 76/* CONTROL3 register fields */77#define AFE440X_CONTROL3_CLKDIV GENMASK(2, 0)78 79/* CONTROL0 values */80#define AFE440X_CONTROL0_WRITE 0x081#define AFE440X_CONTROL0_READ 0x182 83#define AFE440X_INTENSITY_CHAN(_index, _mask) \84 { \85 .type = IIO_INTENSITY, \86 .channel = _index, \87 .address = _index, \88 .scan_index = _index, \89 .scan_type = { \90 .sign = 's', \91 .realbits = 24, \92 .storagebits = 32, \93 .endianness = IIO_CPU, \94 }, \95 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \96 _mask, \97 .indexed = true, \98 }99 100#define AFE440X_CURRENT_CHAN(_index) \101 { \102 .type = IIO_CURRENT, \103 .channel = _index, \104 .address = _index, \105 .scan_index = -1, \106 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \107 BIT(IIO_CHAN_INFO_SCALE), \108 .indexed = true, \109 .output = true, \110 }111 112struct afe440x_val_table {113 int integer;114 int fract;115};116 117#define AFE440X_TABLE_ATTR(_name, _table) \118static ssize_t _name ## _show(struct device *dev, \119 struct device_attribute *attr, char *buf) \120{ \121 ssize_t len = 0; \122 int i; \123 \124 for (i = 0; i < ARRAY_SIZE(_table); i++) \125 len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06u ", \126 _table[i].integer, \127 _table[i].fract); \128 \129 buf[len - 1] = '\n'; \130 \131 return len; \132} \133static DEVICE_ATTR_RO(_name)134 135struct afe440x_attr {136 struct device_attribute dev_attr;137 unsigned int field;138 const struct afe440x_val_table *val_table;139 unsigned int table_size;140};141 142#define to_afe440x_attr(_dev_attr) \143 container_of(_dev_attr, struct afe440x_attr, dev_attr)144 145#define AFE440X_ATTR(_name, _field, _table) \146 struct afe440x_attr afe440x_attr_##_name = { \147 .dev_attr = __ATTR(_name, (S_IRUGO | S_IWUSR), \148 afe440x_show_register, \149 afe440x_store_register), \150 .field = _field, \151 .val_table = _table, \152 .table_size = ARRAY_SIZE(_table), \153 }154 155#endif /* _AFE440X_H */156