| /* |
| * iio/adc/max1363.c |
| * Copyright (C) 2008-2010 Jonathan Cameron |
| * |
| * based on linux/drivers/i2c/chips/max123x |
| * Copyright (C) 2002-2004 Stefan Eletzhofer |
| * |
| * based on linux/drivers/acron/char/pcf8583.c |
| * Copyright (C) 2000 Russell King |
| * |
| * 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. |
| * |
| * max1363.c |
| * |
| * Partial support for max1363 and similar chips. |
| * |
| * Not currently implemented. |
| * |
| * - Monitor interrrupt generation. |
| * - Control of internal reference. |
| */ |
| |
| #include <linux/interrupt.h> |
| #include <linux/gpio.h> |
| #include <linux/workqueue.h> |
| #include <linux/device.h> |
| #include <linux/kernel.h> |
| #include <linux/sysfs.h> |
| #include <linux/list.h> |
| #include <linux/i2c.h> |
| #include <linux/rtc.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/slab.h> |
| |
| #include "../iio.h" |
| #include "../sysfs.h" |
| |
| #include "../ring_generic.h" |
| #include "adc.h" |
| #include "max1363.h" |
| |
| /* Here we claim all are 16 bits. This currently does no harm and saves |
| * us a lot of scan element listings */ |
| |
| #define MAX1363_SCAN_EL(number) \ |
| IIO_SCAN_EL_C(in##number, number, IIO_UNSIGNED(16), 0, NULL); |
| #define MAX1363_SCAN_EL_D(p, n, number) \ |
| IIO_SCAN_NAMED_EL_C(in##p##m##in##n, in##p-in##n, \ |
| number, IIO_SIGNED(16), 0 , NULL); |
| |
| static MAX1363_SCAN_EL(0); |
| static MAX1363_SCAN_EL(1); |
| static MAX1363_SCAN_EL(2); |
| static MAX1363_SCAN_EL(3); |
| static MAX1363_SCAN_EL(4); |
| static MAX1363_SCAN_EL(5); |
| static MAX1363_SCAN_EL(6); |
| static MAX1363_SCAN_EL(7); |
| static MAX1363_SCAN_EL(8); |
| static MAX1363_SCAN_EL(9); |
| static MAX1363_SCAN_EL(10); |
| static MAX1363_SCAN_EL(11); |
| static MAX1363_SCAN_EL_D(0, 1, 12); |
| static MAX1363_SCAN_EL_D(2, 3, 13); |
| static MAX1363_SCAN_EL_D(4, 5, 14); |
| static MAX1363_SCAN_EL_D(6, 7, 15); |
| static MAX1363_SCAN_EL_D(8, 9, 16); |
| static MAX1363_SCAN_EL_D(10, 11, 17); |
| static MAX1363_SCAN_EL_D(1, 0, 18); |
| static MAX1363_SCAN_EL_D(3, 2, 19); |
| static MAX1363_SCAN_EL_D(5, 4, 20); |
| static MAX1363_SCAN_EL_D(7, 6, 21); |
| static MAX1363_SCAN_EL_D(9, 8, 22); |
| static MAX1363_SCAN_EL_D(11, 10, 23); |
| |
| static const struct max1363_mode max1363_mode_table[] = { |
| /* All of the single channel options first */ |
| MAX1363_MODE_SINGLE(0, 1 << 0), |
| MAX1363_MODE_SINGLE(1, 1 << 1), |
| MAX1363_MODE_SINGLE(2, 1 << 2), |
| MAX1363_MODE_SINGLE(3, 1 << 3), |
| MAX1363_MODE_SINGLE(4, 1 << 4), |
| MAX1363_MODE_SINGLE(5, 1 << 5), |
| MAX1363_MODE_SINGLE(6, 1 << 6), |
| MAX1363_MODE_SINGLE(7, 1 << 7), |
| MAX1363_MODE_SINGLE(8, 1 << 8), |
| MAX1363_MODE_SINGLE(9, 1 << 9), |
| MAX1363_MODE_SINGLE(10, 1 << 10), |
| MAX1363_MODE_SINGLE(11, 1 << 11), |
| |
| MAX1363_MODE_DIFF_SINGLE(0, 1, 1 << 12), |
| MAX1363_MODE_DIFF_SINGLE(2, 3, 1 << 13), |
| MAX1363_MODE_DIFF_SINGLE(4, 5, 1 << 14), |
| MAX1363_MODE_DIFF_SINGLE(6, 7, 1 << 15), |
| MAX1363_MODE_DIFF_SINGLE(8, 9, 1 << 16), |
| MAX1363_MODE_DIFF_SINGLE(10, 11, 1 << 17), |
| MAX1363_MODE_DIFF_SINGLE(1, 0, 1 << 18), |
| MAX1363_MODE_DIFF_SINGLE(3, 2, 1 << 19), |
| MAX1363_MODE_DIFF_SINGLE(5, 4, 1 << 20), |
| MAX1363_MODE_DIFF_SINGLE(7, 6, 1 << 21), |
| MAX1363_MODE_DIFF_SINGLE(9, 8, 1 << 22), |
| MAX1363_MODE_DIFF_SINGLE(11, 10, 1 << 23), |
| |
| /* The multichannel scans next */ |
| MAX1363_MODE_SCAN_TO_CHANNEL(1, 0x003), |
| MAX1363_MODE_SCAN_TO_CHANNEL(2, 0x007), |
| MAX1236_MODE_SCAN_MID_TO_CHANNEL(2, 3, 0x00C), |
| MAX1363_MODE_SCAN_TO_CHANNEL(3, 0x00F), |
| MAX1363_MODE_SCAN_TO_CHANNEL(4, 0x01F), |
| MAX1363_MODE_SCAN_TO_CHANNEL(5, 0x03F), |
| MAX1363_MODE_SCAN_TO_CHANNEL(6, 0x07F), |
| MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 7, 0x0C0), |
| MAX1363_MODE_SCAN_TO_CHANNEL(7, 0x0FF), |
| MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 8, 0x1C0), |
| MAX1363_MODE_SCAN_TO_CHANNEL(8, 0x1FF), |
| MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 9, 0x3C0), |
| MAX1363_MODE_SCAN_TO_CHANNEL(9, 0x3FF), |
| MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 10, 0x7C0), |
| MAX1363_MODE_SCAN_TO_CHANNEL(10, 0x7FF), |
| MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 11, 0xFC0), |
| MAX1363_MODE_SCAN_TO_CHANNEL(11, 0xFFF), |
| |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(2, 2, 0x003000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(4, 3, 0x007000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(6, 4, 0x00F000), |
| MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(8, 2, 0x018000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(8, 5, 0x01F000), |
| MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(10, 3, 0x038000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(10, 6, 0x3F000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(3, 2, 0x0C0000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(5, 3, 0x1C0000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(7, 4, 0x3C0000), |
| MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(9, 2, 0x600000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(9, 5, 0x7C0000), |
| MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(11, 3, 0xE00000), |
| MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(11, 6, 0xFC0000), |
| }; |
| |
| const struct max1363_mode |
| *max1363_match_mode(u32 mask, const struct max1363_chip_info *ci) |
| { |
| int i; |
| if (mask) |
| for (i = 0; i < ci->num_modes; i++) |
| if (!((~max1363_mode_table[ci->mode_list[i]].modemask) & |
| mask)) |
| return &max1363_mode_table[ci->mode_list[i]]; |
| return NULL; |
| }; |
| |
| static ssize_t max1363_show_precision(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct iio_dev *dev_info = dev_get_drvdata(dev); |
| struct max1363_state *st = iio_dev_get_devdata(dev_info); |
| return sprintf(buf, "%d\n", st->chip_info->bits); |
| } |
| |
| static IIO_DEVICE_ATTR(in_precision, S_IRUGO, max1363_show_precision, |
| NULL, 0); |
| |
| static int max1363_write_basic_config(struct i2c_client *client, |
| unsigned char d1, |
| unsigned char d2) |
| { |
| int ret; |
| u8 *tx_buf = kmalloc(2 , GFP_KERNEL); |
| |
| if (!tx_buf) |
| return -ENOMEM; |
| tx_buf[0] = d1; |
| tx_buf[1] = d2; |
| |
| ret = i2c_master_send(client, tx_buf, 2); |
| kfree(tx_buf); |
| |
| return (ret > 0) ? 0 : ret; |
| } |
| |
| int max1363_set_scan_mode(struct max1363_state *st) |
| { |
| st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK |
| | MAX1363_SCAN_MASK |
| | MAX1363_SE_DE_MASK); |
| st->configbyte |= st->current_mode->conf; |
| |
| return max1363_write_basic_config(st->client, |
| st->setupbyte, |
| st->configbyte); |
| } |
| |
| static ssize_t max1363_read_single_channel(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct iio_dev *dev_info = dev_get_drvdata(dev); |
| struct max1363_state *st = iio_dev_get_devdata(dev_info); |
| struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); |
| struct i2c_client *client = st->client; |
| int ret = 0, len = 0; |
| s32 data ; |
| char rxbuf[2]; |
| long mask; |
| |
| mutex_lock(&dev_info->mlock); |
| /* If ring buffer capture is occuring, query the buffer */ |
| if (iio_ring_enabled(dev_info)) { |
| mask = max1363_mode_table[this_attr->address].modemask; |
| data = max1363_single_channel_from_ring(mask, st); |
| if (data < 0) { |
| ret = data; |
| goto error_ret; |
| } |
| } else { |
| /* Check to see if current scan mode is correct */ |
| if (st->current_mode != |
| &max1363_mode_table[this_attr->address]) { |
| /* Update scan mode if needed */ |
| st->current_mode |
| = &max1363_mode_table[this_attr->address]; |
| ret = max1363_set_scan_mode(st); |
| if (ret) |
| goto error_ret; |
| } |
| if (st->chip_info->bits != 8) { |
| /* Get reading */ |
| data = i2c_master_recv(client, rxbuf, 2); |
| if (data < 0) { |
| ret = data; |
| goto error_ret; |
| } |
| |
| data = (s32)(rxbuf[1]) | ((s32)(rxbuf[0] & 0x0F)) << 8; |
| } else { |
| /* Get reading */ |
| data = i2c_master_recv(client, rxbuf, 1); |
| if (data < 0) { |
| ret = data; |
| goto error_ret; |
| } |
| data = rxbuf[0]; |
| } |
| } |
| /* Pretty print the result */ |
| len = sprintf(buf, "%u\n", data); |
| |
| error_ret: |
| mutex_unlock(&dev_info->mlock); |
| return ret ? ret : len; |
| } |
| |
| /* Direct read attribtues */ |
| static IIO_DEV_ATTR_IN_RAW(0, max1363_read_single_channel, _s0); |
| static IIO_DEV_ATTR_IN_RAW(1, max1363_read_single_channel, _s1); |
| static IIO_DEV_ATTR_IN_RAW(2, max1363_read_single_channel, _s2); |
| static IIO_DEV_ATTR_IN_RAW(3, max1363_read_single_channel, _s3); |
| static IIO_DEV_ATTR_IN_RAW(4, max1363_read_single_channel, _s4); |
| static IIO_DEV_ATTR_IN_RAW(5, max1363_read_single_channel, _s5); |
| static IIO_DEV_ATTR_IN_RAW(6, max1363_read_single_channel, _s6); |
| static IIO_DEV_ATTR_IN_RAW(7, max1363_read_single_channel, _s7); |
| static IIO_DEV_ATTR_IN_RAW(8, max1363_read_single_channel, _s8); |
| static IIO_DEV_ATTR_IN_RAW(9, max1363_read_single_channel, _s9); |
| static IIO_DEV_ATTR_IN_RAW(10, max1363_read_single_channel, _s10); |
| static IIO_DEV_ATTR_IN_RAW(11, max1363_read_single_channel, _s11); |
| |
| static IIO_DEV_ATTR_IN_DIFF_RAW(0, 1, max1363_read_single_channel, d0m1); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(2, 3, max1363_read_single_channel, d2m3); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(4, 5, max1363_read_single_channel, d4m5); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(6, 7, max1363_read_single_channel, d6m7); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(8, 9, max1363_read_single_channel, d8m9); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(10, 11, max1363_read_single_channel, d10m11); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(1, 0, max1363_read_single_channel, d1m0); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(3, 2, max1363_read_single_channel, d3m2); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(5, 4, max1363_read_single_channel, d5m4); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(7, 6, max1363_read_single_channel, d7m6); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(9, 8, max1363_read_single_channel, d9m8); |
| static IIO_DEV_ATTR_IN_DIFF_RAW(11, 10, max1363_read_single_channel, d11m10); |
| |
| |
| static ssize_t max1363_show_scale(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| /* Driver currently only support internal vref */ |
| struct iio_dev *dev_info = dev_get_drvdata(dev); |
| struct max1363_state *st = iio_dev_get_devdata(dev_info); |
| /* Corresponds to Vref / 2^(bits) */ |
| |
| if ((1 << (st->chip_info->bits + 1)) |
| > st->chip_info->int_vref_mv) |
| return sprintf(buf, "0.5\n"); |
| else |
| return sprintf(buf, "%d\n", |
| st->chip_info->int_vref_mv >> st->chip_info->bits); |
| } |
| |
| static IIO_DEVICE_ATTR(in_scale, S_IRUGO, max1363_show_scale, NULL, 0); |
| |
| static ssize_t max1363_show_name(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct iio_dev *dev_info = dev_get_drvdata(dev); |
| struct max1363_state *st = iio_dev_get_devdata(dev_info); |
| return sprintf(buf, "%s\n", st->chip_info->name); |
| } |
| |
| static IIO_DEVICE_ATTR(name, S_IRUGO, max1363_show_name, NULL, 0); |
| |
| /* Applies to max1363 */ |
| static const enum max1363_modes max1363_mode_list[] = { |
| _s0, _s1, _s2, _s3, |
| s0to1, s0to2, s0to3, |
| d0m1, d2m3, d1m0, d3m2, |
| d0m1to2m3, d1m0to3m2, |
| }; |
| |
| static struct attribute *max1363_device_attrs[] = { |
| &iio_dev_attr_in0_raw.dev_attr.attr, |
| &iio_dev_attr_in1_raw.dev_attr.attr, |
| &iio_dev_attr_in2_raw.dev_attr.attr, |
| &iio_dev_attr_in3_raw.dev_attr.attr, |
| &iio_dev_attr_in0min1_raw.dev_attr.attr, |
| &iio_dev_attr_in2min3_raw.dev_attr.attr, |
| &iio_dev_attr_in1min0_raw.dev_attr.attr, |
| &iio_dev_attr_in3min2_raw.dev_attr.attr, |
| &iio_dev_attr_name.dev_attr.attr, |
| &iio_dev_attr_in_scale.dev_attr.attr, |
| NULL |
| }; |
| |
| static struct attribute_group max1363_dev_attr_group = { |
| .attrs = max1363_device_attrs, |
| }; |
| |
| static struct attribute *max1363_scan_el_attrs[] = { |
| &iio_scan_el_in0.dev_attr.attr, |
| &iio_scan_el_in1.dev_attr.attr, |
| &iio_scan_el_in2.dev_attr.attr, |
| &iio_scan_el_in3.dev_attr.attr, |
| &iio_scan_el_in0min1.dev_attr.attr, |
| &iio_scan_el_in2min3.dev_attr.attr, |
| &iio_scan_el_in1min0.dev_attr.attr, |
| &iio_scan_el_in3min2.dev_attr.attr, |
| &iio_dev_attr_in_precision.dev_attr.attr, |
| NULL, |
| }; |
| |
| static struct attribute_group max1363_scan_el_group = { |
| .name = "scan_elements", |
| .attrs = max1363_scan_el_attrs, |
| }; |
| |
| /* Appies to max1236, max1237 */ |
| static const enum max1363_modes max1236_mode_list[] = { |
| _s0, _s1, _s2, _s3, |
| s0to1, s0to2, s0to3, |
| d0m1, d2m3, d1m0, d3m2, |
| d0m1to2m3, d1m0to3m2, |
| s2to3, |
| }; |
| |
| /* Applies to max1238, max1239 */ |
| static const enum max1363_modes max1238_mode_list[] = { |
| _s0, _s1, _s2, _s3, _s4, _s5, _s6, _s7, _s8, _s9, _s10, _s11, |
| s0to1, s0to2, s0to3, s0to4, s0to5, s0to6, |
| s0to7, s0to8, s0to9, s0to10, s0to11, |
| d0m1, d2m3, d4m5, d6m7, d8m9, d10m11, |
| d1m0, d3m2, d5m4, d7m6, d9m8, d11m10, |
| d0m1to2m3, d0m1to4m5, d0m1to6m7, d0m1to8m9, d0m1to10m11, |
| d1m0to3m2, d1m0to5m4, d1m0to7m6, d1m0to9m8, d1m0to11m10, |
| s6to7, s6to8, s6to9, s6to10, s6to11, |
| d6m7to8m9, d6m7to10m11, d7m6to9m8, d7m6to11m10, |
| }; |
| |
| static struct attribute *max1238_device_attrs[] = { |
| &iio_dev_attr_in0_raw.dev_attr.attr, |
| &iio_dev_attr_in1_raw.dev_attr.attr, |
| &iio_dev_attr_in2_raw.dev_attr.attr, |
| &iio_dev_attr_in3_raw.dev_attr.attr, |
| &iio_dev_attr_in4_raw.dev_attr.attr, |
| &iio_dev_attr_in5_raw.dev_attr.attr, |
| &iio_dev_attr_in6_raw.dev_attr.attr, |
| &iio_dev_attr_in7_raw.dev_attr.attr, |
| &iio_dev_attr_in8_raw.dev_attr.attr, |
| &iio_dev_attr_in9_raw.dev_attr.attr, |
| &iio_dev_attr_in10_raw.dev_attr.attr, |
| &iio_dev_attr_in11_raw.dev_attr.attr, |
| &iio_dev_attr_in0min1_raw.dev_attr.attr, |
| &iio_dev_attr_in2min3_raw.dev_attr.attr, |
| &iio_dev_attr_in4min5_raw.dev_attr.attr, |
| &iio_dev_attr_in6min7_raw.dev_attr.attr, |
| &iio_dev_attr_in8min9_raw.dev_attr.attr, |
| &iio_dev_attr_in10min11_raw.dev_attr.attr, |
| &iio_dev_attr_in1min0_raw.dev_attr.attr, |
| &iio_dev_attr_in3min2_raw.dev_attr.attr, |
| &iio_dev_attr_in5min4_raw.dev_attr.attr, |
| &iio_dev_attr_in7min6_raw.dev_attr.attr, |
| &iio_dev_attr_in9min8_raw.dev_attr.attr, |
| &iio_dev_attr_in11min10_raw.dev_attr.attr, |
| &iio_dev_attr_name.dev_attr.attr, |
| &iio_dev_attr_in_scale.dev_attr.attr, |
| NULL |
| }; |
| |
| static struct attribute_group max1238_dev_attr_group = { |
| .attrs = max1238_device_attrs, |
| }; |
| |
| static struct attribute *max1238_scan_el_attrs[] = { |
| &iio_scan_el_in0.dev_attr.attr, |
| &iio_scan_el_in1.dev_attr.attr, |
| &iio_scan_el_in2.dev_attr.attr, |
| &iio_scan_el_in3.dev_attr.attr, |
| &iio_scan_el_in4.dev_attr.attr, |
| &iio_scan_el_in5.dev_attr.attr, |
| &iio_scan_el_in6.dev_attr.attr, |
| &iio_scan_el_in7.dev_attr.attr, |
| &iio_scan_el_in8.dev_attr.attr, |
| &iio_scan_el_in9.dev_attr.attr, |
| &iio_scan_el_in10.dev_attr.attr, |
| &iio_scan_el_in11.dev_attr.attr, |
| &iio_scan_el_in0min1.dev_attr.attr, |
| &iio_scan_el_in2min3.dev_attr.attr, |
| &iio_scan_el_in4min5.dev_attr.attr, |
| &iio_scan_el_in6min7.dev_attr.attr, |
| &iio_scan_el_in8min9.dev_attr.attr, |
| &iio_scan_el_in10min11.dev_attr.attr, |
| &iio_scan_el_in1min0.dev_attr.attr, |
| &iio_scan_el_in3min2.dev_attr.attr, |
| &iio_scan_el_in5min4.dev_attr.attr, |
| &iio_scan_el_in7min6.dev_attr.attr, |
| &iio_scan_el_in9min8.dev_attr.attr, |
| &iio_scan_el_in11min10.dev_attr.attr, |
| &iio_dev_attr_in_precision.dev_attr.attr, |
| NULL, |
| }; |
| |
| static struct attribute_group max1238_scan_el_group = { |
| .name = "scan_elements", |
| .attrs = max1238_scan_el_attrs, |
| }; |
| |
| |
| static const enum max1363_modes max11607_mode_list[] = { |
| _s0, _s1, _s2, _s3, |
| s0to1, s0to2, s0to3, |
| s2to3, |
| d0m1, d2m3, d1m0, d3m2, |
| d0m1to2m3, d1m0to3m2, |
| }; |
| |
| static const enum max1363_modes max11608_mode_list[] = { |
| _s0, _s1, _s2, _s3, _s4, _s5, _s6, _s7, |
| s0to1, s0to2, s0to3, s0to4, s0to5, s0to6, s0to7, |
| s6to7, |
| d0m1, d2m3, d4m5, d6m7, |
| d1m0, d3m2, d5m4, d7m6, |
| d0m1to2m3, d0m1to4m5, d0m1to6m7, |
| d1m0to3m2, d1m0to5m4, d1m0to7m6, |
| }; |
| |
| static struct attribute *max11608_device_attrs[] = { |
| &iio_dev_attr_in0_raw.dev_attr.attr, |
| &iio_dev_attr_in1_raw.dev_attr.attr, |
| &iio_dev_attr_in2_raw.dev_attr.attr, |
| &iio_dev_attr_in3_raw.dev_attr.attr, |
| &iio_dev_attr_in4_raw.dev_attr.attr, |
| &iio_dev_attr_in5_raw.dev_attr.attr, |
| &iio_dev_attr_in6_raw.dev_attr.attr, |
| &iio_dev_attr_in7_raw.dev_attr.attr, |
| &iio_dev_attr_in0min1_raw.dev_attr.attr, |
| &iio_dev_attr_in2min3_raw.dev_attr.attr, |
| &iio_dev_attr_in4min5_raw.dev_attr.attr, |
| &iio_dev_attr_in6min7_raw.dev_attr.attr, |
| &iio_dev_attr_in1min0_raw.dev_attr.attr, |
| &iio_dev_attr_in3min2_raw.dev_attr.attr, |
| &iio_dev_attr_in5min4_raw.dev_attr.attr, |
| &iio_dev_attr_in7min6_raw.dev_attr.attr, |
| &iio_dev_attr_name.dev_attr.attr, |
| &iio_dev_attr_in_scale.dev_attr.attr, |
| NULL |
| }; |
| |
| static struct attribute_group max11608_dev_attr_group = { |
| .attrs = max11608_device_attrs, |
| }; |
| |
| static struct attribute *max11608_scan_el_attrs[] = { |
| &iio_scan_el_in0.dev_attr.attr, |
| &iio_scan_el_in1.dev_attr.attr, |
| &iio_scan_el_in2.dev_attr.attr, |
| &iio_scan_el_in3.dev_attr.attr, |
| &iio_scan_el_in4.dev_attr.attr, |
| &iio_scan_el_in5.dev_attr.attr, |
| &iio_scan_el_in6.dev_attr.attr, |
| &iio_scan_el_in7.dev_attr.attr, |
| &iio_scan_el_in0min1.dev_attr.attr, |
| &iio_scan_el_in2min3.dev_attr.attr, |
| &iio_scan_el_in4min5.dev_attr.attr, |
| &iio_scan_el_in6min7.dev_attr.attr, |
| &iio_scan_el_in1min0.dev_attr.attr, |
| &iio_scan_el_in3min2.dev_attr.attr, |
| &iio_scan_el_in5min4.dev_attr.attr, |
| &iio_scan_el_in7min6.dev_attr.attr, |
| &iio_dev_attr_in_precision.dev_attr.attr, |
| }; |
| |
| static struct attribute_group max11608_scan_el_group = { |
| .name = "scan_elements", |
| .attrs = max11608_scan_el_attrs, |
| }; |
| |
| enum { max1361, |
| max1362, |
| max1363, |
| max1364, |
| max1036, |
| max1037, |
| max1038, |
| max1039, |
| max1136, |
| max1137, |
| max1138, |
| max1139, |
| max1236, |
| max1237, |
| max1238, |
| max1239, |
| max11600, |
| max11601, |
| max11602, |
| max11603, |
| max11604, |
| max11605, |
| max11606, |
| max11607, |
| max11608, |
| max11609, |
| max11610, |
| max11611, |
| max11612, |
| max11613, |
| max11614, |
| max11615, |
| max11616, |
| max11617, |
| }; |
| |
| /* max1363 and max1368 tested - rest from data sheet */ |
| static const struct max1363_chip_info max1363_chip_info_tbl[] = { |
| { |
| .name = "max1361", |
| .num_inputs = 4, |
| .bits = 10, |
| .int_vref_mv = 2048, |
| .monitor_mode = 1, |
| .mode_list = max1363_mode_list, |
| .num_modes = ARRAY_SIZE(max1363_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1362", |
| .num_inputs = 4, |
| .bits = 10, |
| .int_vref_mv = 4096, |
| .monitor_mode = 1, |
| .mode_list = max1363_mode_list, |
| .num_modes = ARRAY_SIZE(max1363_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1363", |
| .num_inputs = 4, |
| .bits = 12, |
| .int_vref_mv = 2048, |
| .monitor_mode = 1, |
| .mode_list = max1363_mode_list, |
| .num_modes = ARRAY_SIZE(max1363_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1364", |
| .num_inputs = 4, |
| .bits = 12, |
| .int_vref_mv = 4096, |
| .monitor_mode = 1, |
| .mode_list = max1363_mode_list, |
| .num_modes = ARRAY_SIZE(max1363_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1036", |
| .num_inputs = 4, |
| .bits = 8, |
| .int_vref_mv = 4096, |
| .mode_list = max1236_mode_list, |
| .num_modes = ARRAY_SIZE(max1236_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1037", |
| .num_inputs = 4, |
| .bits = 8, |
| .int_vref_mv = 2048, |
| .mode_list = max1236_mode_list, |
| .num_modes = ARRAY_SIZE(max1236_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1038", |
| .num_inputs = 12, |
| .bits = 8, |
| .int_vref_mv = 4096, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max1039", |
| .num_inputs = 12, |
| .bits = 8, |
| .int_vref_mv = 2048, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max1136", |
| .num_inputs = 4, |
| .bits = 10, |
| .int_vref_mv = 4096, |
| .mode_list = max1236_mode_list, |
| .num_modes = ARRAY_SIZE(max1236_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1137", |
| .num_inputs = 4, |
| .bits = 10, |
| .int_vref_mv = 2048, |
| .mode_list = max1236_mode_list, |
| .num_modes = ARRAY_SIZE(max1236_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1138", |
| .num_inputs = 12, |
| .bits = 10, |
| .int_vref_mv = 4096, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max1139", |
| .num_inputs = 12, |
| .bits = 10, |
| .int_vref_mv = 2048, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max1236", |
| .num_inputs = 4, |
| .bits = 12, |
| .int_vref_mv = 4096, |
| .mode_list = max1236_mode_list, |
| .num_modes = ARRAY_SIZE(max1236_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1237", |
| .num_inputs = 4, |
| .bits = 12, |
| .int_vref_mv = 2048, |
| .mode_list = max1236_mode_list, |
| .num_modes = ARRAY_SIZE(max1236_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max1238", |
| .num_inputs = 12, |
| .bits = 12, |
| .int_vref_mv = 4096, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max1239", |
| .num_inputs = 12, |
| .bits = 12, |
| .int_vref_mv = 2048, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max11600", |
| .num_inputs = 4, |
| .bits = 8, |
| .int_vref_mv = 4096, |
| .mode_list = max11607_mode_list, |
| .num_modes = ARRAY_SIZE(max11607_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max11601", |
| .num_inputs = 4, |
| .bits = 8, |
| .int_vref_mv = 2048, |
| .mode_list = max11607_mode_list, |
| .num_modes = ARRAY_SIZE(max11607_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max11602", |
| .num_inputs = 8, |
| .bits = 8, |
| .int_vref_mv = 4096, |
| .mode_list = max11608_mode_list, |
| .num_modes = ARRAY_SIZE(max11608_mode_list), |
| .default_mode = s0to7, |
| .dev_attrs = &max11608_dev_attr_group, |
| .scan_attrs = &max11608_scan_el_group, |
| }, { |
| .name = "max11603", |
| .num_inputs = 8, |
| .bits = 8, |
| .int_vref_mv = 2048, |
| .mode_list = max11608_mode_list, |
| .num_modes = ARRAY_SIZE(max11608_mode_list), |
| .default_mode = s0to7, |
| .dev_attrs = &max11608_dev_attr_group, |
| .scan_attrs = &max11608_scan_el_group, |
| }, { |
| .name = "max11604", |
| .num_inputs = 12, |
| .bits = 8, |
| .int_vref_mv = 4098, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max11605", |
| .num_inputs = 12, |
| .bits = 8, |
| .int_vref_mv = 2048, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max11606", |
| .num_inputs = 4, |
| .bits = 10, |
| .int_vref_mv = 4096, |
| .mode_list = max11607_mode_list, |
| .num_modes = ARRAY_SIZE(max11607_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max11607", |
| .num_inputs = 4, |
| .bits = 10, |
| .int_vref_mv = 2048, |
| .mode_list = max11607_mode_list, |
| .num_modes = ARRAY_SIZE(max11607_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max11608", |
| .num_inputs = 8, |
| .bits = 10, |
| .int_vref_mv = 4096, |
| .mode_list = max11608_mode_list, |
| .num_modes = ARRAY_SIZE(max11608_mode_list), |
| .default_mode = s0to7, |
| .dev_attrs = &max11608_dev_attr_group, |
| .scan_attrs = &max11608_scan_el_group, |
| }, { |
| .name = "max11609", |
| .num_inputs = 8, |
| .bits = 10, |
| .int_vref_mv = 2048, |
| .mode_list = max11608_mode_list, |
| .num_modes = ARRAY_SIZE(max11608_mode_list), |
| .default_mode = s0to7, |
| .dev_attrs = &max11608_dev_attr_group, |
| .scan_attrs = &max11608_scan_el_group, |
| }, { |
| .name = "max11610", |
| .num_inputs = 12, |
| .bits = 10, |
| .int_vref_mv = 4098, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max11611", |
| .num_inputs = 12, |
| .bits = 10, |
| .int_vref_mv = 2048, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max11612", |
| .num_inputs = 4, |
| .bits = 12, |
| .int_vref_mv = 4096, |
| .mode_list = max11607_mode_list, |
| .num_modes = ARRAY_SIZE(max11607_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max11613", |
| .num_inputs = 4, |
| .bits = 12, |
| .int_vref_mv = 2048, |
| .mode_list = max11607_mode_list, |
| .num_modes = ARRAY_SIZE(max11607_mode_list), |
| .default_mode = s0to3, |
| .dev_attrs = &max1363_dev_attr_group, |
| .scan_attrs = &max1363_scan_el_group, |
| }, { |
| .name = "max11614", |
| .num_inputs = 8, |
| .bits = 12, |
| .int_vref_mv = 4096, |
| .mode_list = max11608_mode_list, |
| .num_modes = ARRAY_SIZE(max11608_mode_list), |
| .default_mode = s0to7, |
| .dev_attrs = &max11608_dev_attr_group, |
| .scan_attrs = &max11608_scan_el_group, |
| }, { |
| .name = "max11615", |
| .num_inputs = 8, |
| .bits = 12, |
| .int_vref_mv = 2048, |
| .mode_list = max11608_mode_list, |
| .num_modes = ARRAY_SIZE(max11608_mode_list), |
| .default_mode = s0to7, |
| .dev_attrs = &max11608_dev_attr_group, |
| .scan_attrs = &max11608_scan_el_group, |
| }, { |
| .name = "max11616", |
| .num_inputs = 12, |
| .bits = 12, |
| .int_vref_mv = 4098, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| }, { |
| .name = "max11617", |
| .num_inputs = 12, |
| .bits = 12, |
| .int_vref_mv = 2048, |
| .mode_list = max1238_mode_list, |
| .num_modes = ARRAY_SIZE(max1238_mode_list), |
| .default_mode = s0to11, |
| .dev_attrs = &max1238_dev_attr_group, |
| .scan_attrs = &max1238_scan_el_group, |
| } |
| }; |
| |
| static int max1363_initial_setup(struct max1363_state *st) |
| { |
| st->setupbyte = MAX1363_SETUP_AIN3_IS_AIN3_REF_IS_VDD |
| | MAX1363_SETUP_POWER_UP_INT_REF |
| | MAX1363_SETUP_INT_CLOCK |
| | MAX1363_SETUP_UNIPOLAR |
| | MAX1363_SETUP_NORESET; |
| |
| /* Set scan mode writes the config anyway so wait until then*/ |
| st->setupbyte = MAX1363_SETUP_BYTE(st->setupbyte); |
| st->current_mode = &max1363_mode_table[st->chip_info->default_mode]; |
| st->configbyte = MAX1363_CONFIG_BYTE(st->configbyte); |
| |
| return max1363_set_scan_mode(st); |
| } |
| |
| static int __devinit max1363_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| int ret, i, regdone = 0; |
| struct max1363_state *st = kzalloc(sizeof(*st), GFP_KERNEL); |
| if (st == NULL) { |
| ret = -ENOMEM; |
| goto error_ret; |
| } |
| |
| /* this is only used for device removal purposes */ |
| i2c_set_clientdata(client, st); |
| |
| atomic_set(&st->protect_ring, 0); |
| |
| /* Find the chip model specific data */ |
| for (i = 0; i < ARRAY_SIZE(max1363_chip_info_tbl); i++) |
| if (!strcmp(max1363_chip_info_tbl[i].name, id->name)) { |
| st->chip_info = &max1363_chip_info_tbl[i]; |
| break; |
| }; |
| /* Unsupported chip */ |
| if (!st->chip_info) { |
| dev_err(&client->dev, "%s is not supported\n", id->name); |
| ret = -ENODEV; |
| goto error_free_st; |
| } |
| |
| st->reg = regulator_get(&client->dev, "vcc"); |
| if (!IS_ERR(st->reg)) { |
| ret = regulator_enable(st->reg); |
| if (ret) |
| goto error_put_reg; |
| } |
| st->client = client; |
| |
| st->indio_dev = iio_allocate_device(); |
| if (st->indio_dev == NULL) { |
| ret = -ENOMEM; |
| goto error_disable_reg; |
| } |
| |
| st->indio_dev->available_scan_masks |
| = kzalloc(sizeof(*st->indio_dev->available_scan_masks)* |
| (st->chip_info->num_modes + 1), GFP_KERNEL); |
| if (!st->indio_dev->available_scan_masks) { |
| ret = -ENOMEM; |
| goto error_free_device; |
| } |
| |
| for (i = 0; i < st->chip_info->num_modes; i++) |
| st->indio_dev->available_scan_masks[i] = |
| max1363_mode_table[st->chip_info->mode_list[i]] |
| .modemask; |
| /* Estabilish that the iio_dev is a child of the i2c device */ |
| st->indio_dev->dev.parent = &client->dev; |
| st->indio_dev->attrs = st->chip_info->dev_attrs; |
| |
| /* Todo: this shouldn't be here. */ |
| st->indio_dev->scan_el_attrs = st->chip_info->scan_attrs; |
| st->indio_dev->dev_data = (void *)(st); |
| st->indio_dev->driver_module = THIS_MODULE; |
| st->indio_dev->modes = INDIO_DIRECT_MODE; |
| |
| ret = max1363_initial_setup(st); |
| if (ret) |
| goto error_free_available_scan_masks; |
| |
| ret = max1363_register_ring_funcs_and_init(st->indio_dev); |
| if (ret) |
| goto error_free_available_scan_masks; |
| |
| ret = iio_device_register(st->indio_dev); |
| if (ret) |
| goto error_cleanup_ring; |
| regdone = 1; |
| ret = max1363_initialize_ring(st->indio_dev->ring); |
| if (ret) |
| goto error_cleanup_ring; |
| return 0; |
| error_cleanup_ring: |
| max1363_ring_cleanup(st->indio_dev); |
| error_free_available_scan_masks: |
| kfree(st->indio_dev->available_scan_masks); |
| error_free_device: |
| if (!regdone) |
| iio_free_device(st->indio_dev); |
| else |
| iio_device_unregister(st->indio_dev); |
| error_disable_reg: |
| if (!IS_ERR(st->reg)) |
| regulator_disable(st->reg); |
| error_put_reg: |
| if (!IS_ERR(st->reg)) |
| regulator_put(st->reg); |
| error_free_st: |
| kfree(st); |
| |
| error_ret: |
| return ret; |
| } |
| |
| static int max1363_remove(struct i2c_client *client) |
| { |
| struct max1363_state *st = i2c_get_clientdata(client); |
| struct iio_dev *indio_dev = st->indio_dev; |
| max1363_uninitialize_ring(indio_dev->ring); |
| max1363_ring_cleanup(indio_dev); |
| kfree(st->indio_dev->available_scan_masks); |
| iio_device_unregister(indio_dev); |
| if (!IS_ERR(st->reg)) { |
| regulator_disable(st->reg); |
| regulator_put(st->reg); |
| } |
| kfree(st); |
| |
| return 0; |
| } |
| |
| static const struct i2c_device_id max1363_id[] = { |
| { "max1361", max1361 }, |
| { "max1362", max1362 }, |
| { "max1363", max1363 }, |
| { "max1364", max1364 }, |
| { "max1036", max1036 }, |
| { "max1037", max1037 }, |
| { "max1038", max1038 }, |
| { "max1039", max1039 }, |
| { "max1136", max1136 }, |
| { "max1137", max1137 }, |
| { "max1138", max1138 }, |
| { "max1139", max1139 }, |
| { "max1236", max1236 }, |
| { "max1237", max1237 }, |
| { "max1238", max1238 }, |
| { "max1239", max1239 }, |
| { "max11600", max11600 }, |
| { "max11601", max11601 }, |
| { "max11602", max11602 }, |
| { "max11603", max11603 }, |
| { "max11604", max11604 }, |
| { "max11605", max11605 }, |
| { "max11606", max11606 }, |
| { "max11607", max11607 }, |
| { "max11608", max11608 }, |
| { "max11609", max11609 }, |
| { "max11610", max11610 }, |
| { "max11611", max11611 }, |
| { "max11612", max11612 }, |
| { "max11613", max11613 }, |
| { "max11614", max11614 }, |
| { "max11615", max11615 }, |
| { "max11616", max11616 }, |
| { "max11617", max11617 }, |
| {} |
| }; |
| |
| MODULE_DEVICE_TABLE(i2c, max1363_id); |
| |
| static struct i2c_driver max1363_driver = { |
| .driver = { |
| .name = "max1363", |
| }, |
| .probe = max1363_probe, |
| .remove = max1363_remove, |
| .id_table = max1363_id, |
| }; |
| |
| static __init int max1363_init(void) |
| { |
| return i2c_add_driver(&max1363_driver); |
| } |
| |
| static __exit void max1363_exit(void) |
| { |
| i2c_del_driver(&max1363_driver); |
| } |
| |
| MODULE_AUTHOR("Jonathan Cameron <jic23@cam.ac.uk>"); |
| MODULE_DESCRIPTION("Maxim 1363 ADC"); |
| MODULE_LICENSE("GPL v2"); |
| |
| module_init(max1363_init); |
| module_exit(max1363_exit); |
