[PATCH 15/19] staging:iio:max1363 add support for 8 bit equivalent devices, max1036-9, max11600-5
From: Jonathan Cameron
Date: Mon Apr 26 2010 - 15:30:10 EST
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxx>
---
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 afc8318..0835fbc 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 c53bf6d..fa91cc1 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,
@@ -577,6 +598,46 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
.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,
@@ -657,6 +718,66 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
.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,
@@ -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 f1e37f2..85fde75 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;
--
1.6.4.4
--
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