/* * 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 */