From 3bf877c1cc0d17ef471f21ae319fcb9c9211df61 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Tue, 4 May 2010 14:43:10 +0100 Subject: [PATCH] staging:iio:max1363 add support for 8 bit equivalent devices, max1036-9, max11600-5 Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/adc/Kconfig | 12 ++- drivers/staging/iio/adc/max1363_core.c | 143 +++++++++++++++++++++++-- drivers/staging/iio/adc/max1363_ring.c | 23 ++-- 3 files changed, 161 insertions(+), 17 deletions(-) diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig index afc8318a96d4..0835fbc86c2a 100644 --- a/drivers/staging/iio/adc/Kconfig +++ b/drivers/staging/iio/adc/Kconfig @@ -10,11 +10,13 @@ config MAX1363 select MAX1363_RING_BUFFER help Say yes here to build support for many MAXIM i2c analog to digital - convertors (ADC). (max1361, max1362, max1363, max1364, max1136, - max1136, max1137, max1138, max1139, max1236, max1237, max11238, - max1239, max11606, max11607, max11608, max11609, max11610, - max11611, max11612, max11613, max11614, max11615, max11616, - max11617) Provides direct access via sysfs. + convertors (ADC). (max1361, max1362, max1363, max1364, max1036, + max1037, max1038, max1039, max1136, max1136, max1137, max1138, + max1139, max1236, max1237, max11238, max1239, max11600, max11601, + max11602, max11603, max11604, max11605, max11606, max11607, + max11608, max11609, max11610, max11611, max11612, max11613, + max11614, max11615, max11616, max11617) Provides direct access + via sysfs. config MAX1363_RING_BUFFER bool "MAXIM max1363: use ring buffer" diff --git a/drivers/staging/iio/adc/max1363_core.c b/drivers/staging/iio/adc/max1363_core.c index c53bf6d8410c..fa91cc14c64f 100644 --- a/drivers/staging/iio/adc/max1363_core.c +++ b/drivers/staging/iio/adc/max1363_core.c @@ -226,13 +226,24 @@ static ssize_t max1363_read_single_channel(struct device *dev, if (ret) goto error_ret; } - /* Get reading */ - data = i2c_master_recv(client, rxbuf, 2); - if (data < 0) { - ret = data; - 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]; } - data = (s32)(rxbuf[1]) | ((s32)(rxbuf[0] & 0x0F)) << 8; } /* Pretty print the result */ len = sprintf(buf, "%u\n", data); @@ -508,6 +519,10 @@ enum { max1361, max1362, max1363, max1364, + max1036, + max1037, + max1038, + max1039, max1136, max1137, max1138, @@ -516,6 +531,12 @@ enum { max1361, max1237, max1238, max1239, + max11600, + max11601, + max11602, + max11603, + max11604, + max11605, max11606, max11607, max11608, @@ -576,6 +597,46 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = { .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, @@ -656,6 +717,66 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = { .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, @@ -920,6 +1041,10 @@ static const struct i2c_device_id max1363_id[] = { { "max1362", max1362 }, { "max1363", max1363 }, { "max1364", max1364 }, + { "max1036", max1036 }, + { "max1037", max1037 }, + { "max1038", max1038 }, + { "max1039", max1039 }, { "max1136", max1136 }, { "max1137", max1137 }, { "max1138", max1138 }, @@ -928,6 +1053,12 @@ static const struct i2c_device_id max1363_id[] = { { "max1237", max1237 }, { "max1238", max1238 }, { "max1239", max1239 }, + { "max11600", max11600 }, + { "max11601", max11601 }, + { "max11602", max11602 }, + { "max11603", max11603 }, + { "max11604", max11604 }, + { "max11605", max11605 }, { "max11606", max11606 }, { "max11607", max11607 }, { "max11608", max11608 }, diff --git a/drivers/staging/iio/adc/max1363_ring.c b/drivers/staging/iio/adc/max1363_ring.c index f1e37f2cf4eb..85fde751a154 100644 --- a/drivers/staging/iio/adc/max1363_ring.c +++ b/drivers/staging/iio/adc/max1363_ring.c @@ -55,8 +55,11 @@ int max1363_single_channel_from_ring(long mask, struct max1363_state *st) count++; mask >>= 1; } - return ((int)(ring_data[count*2 + 0] & 0x0F) << 8) - + (int)(ring_data[count*2 + 1]); + if (st->chip_info->bits != 8) + return ((int)(ring_data[count*2 + 0] & 0x0F) << 8) + + (int)(ring_data[count*2 + 1]); + else + return ring_data[count]; error_free_ring_data: kfree(ring_data); @@ -90,7 +93,10 @@ static int max1363_ring_preenable(struct iio_dev *indio_dev) numvals = hweight_long(st->current_mode->modemask); if (indio_dev->ring->access.set_bpd) { - d_size = numvals*2 + sizeof(s64); + if (st->chip_info->bits != 8) + d_size = numvals*2 + sizeof(s64); + else + d_size = numvals + sizeof(s64); if (d_size % 8) d_size += 8 - (d_size % 8); indio_dev->ring->access.set_bpd(indio_dev->ring, d_size); @@ -166,7 +172,10 @@ static void max1363_poll_bh_to_ring(struct work_struct *work_s) unsigned long numvals = hweight_long(st->current_mode->modemask); /* Ensure the timestamp is 8 byte aligned */ - d_size = numvals*2 + sizeof(s64); + if (st->chip_info->bits != 8) + d_size = numvals*2 + sizeof(s64); + else + d_size = numvals + sizeof(s64); if (d_size % sizeof(s64)) d_size += sizeof(s64) - (d_size % sizeof(s64)); @@ -184,8 +193,10 @@ static void max1363_poll_bh_to_ring(struct work_struct *work_s) rxbuf = kmalloc(d_size, GFP_KERNEL); if (rxbuf == NULL) return; - - b_sent = i2c_master_recv(st->client, rxbuf, numvals*2); + if (st->chip_info->bits != 8) + b_sent = i2c_master_recv(st->client, rxbuf, numvals*2); + else + b_sent = i2c_master_recv(st->client, rxbuf, numvals); if (b_sent < 0) goto done; -- 2.20.1