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authorStefan Wahren <stefan.wahren@i2se.com>2015-07-18 15:30:46 +0300
committerJonathan Cameron <jic23@kernel.org>2015-07-19 12:38:52 +0300
commit829aed1a6e2cbceb2d2fe0f7557dea71fb38cec6 (patch)
treed0aa6cca3498df30e0629d26bd93dd0a6d239edf /drivers/staging/iio
parentae5896d48180520629655a9356737fe6dbc5e9e5 (diff)
downloadlinux-829aed1a6e2cbceb2d2fe0f7557dea71fb38cec6.tar.xz
iio: mxs-lradc: add datasheet name for every usable channel
In order to provide a channel name to in kernel consumers add the datasheet names for every usable AD channel. Since the channel names differ between i.MX23 and i.MX28, we need to separate the channel specs. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/staging/iio')
-rw-r--r--drivers/staging/iio/adc/mxs-lradc.c80
1 files changed, 62 insertions, 18 deletions
diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
index 3a549eff7e71..3f7715c9968b 100644
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -1365,7 +1365,7 @@ static const struct iio_buffer_setup_ops mxs_lradc_buffer_ops = {
* Driver initialization
*/
-#define MXS_ADC_CHAN(idx, chan_type) { \
+#define MXS_ADC_CHAN(idx, chan_type, name) { \
.type = (chan_type), \
.indexed = 1, \
.scan_index = (idx), \
@@ -1378,17 +1378,18 @@ static const struct iio_buffer_setup_ops mxs_lradc_buffer_ops = {
.realbits = LRADC_RESOLUTION, \
.storagebits = 32, \
}, \
+ .datasheet_name = (name), \
}
-static const struct iio_chan_spec mxs_lradc_chan_spec[] = {
- MXS_ADC_CHAN(0, IIO_VOLTAGE),
- MXS_ADC_CHAN(1, IIO_VOLTAGE),
- MXS_ADC_CHAN(2, IIO_VOLTAGE),
- MXS_ADC_CHAN(3, IIO_VOLTAGE),
- MXS_ADC_CHAN(4, IIO_VOLTAGE),
- MXS_ADC_CHAN(5, IIO_VOLTAGE),
- MXS_ADC_CHAN(6, IIO_VOLTAGE),
- MXS_ADC_CHAN(7, IIO_VOLTAGE),
+static const struct iio_chan_spec mx23_lradc_chan_spec[] = {
+ MXS_ADC_CHAN(0, IIO_VOLTAGE, "LRADC0"),
+ MXS_ADC_CHAN(1, IIO_VOLTAGE, "LRADC1"),
+ MXS_ADC_CHAN(2, IIO_VOLTAGE, "LRADC2"),
+ MXS_ADC_CHAN(3, IIO_VOLTAGE, "LRADC3"),
+ MXS_ADC_CHAN(4, IIO_VOLTAGE, "LRADC4"),
+ MXS_ADC_CHAN(5, IIO_VOLTAGE, "LRADC5"),
+ MXS_ADC_CHAN(6, IIO_VOLTAGE, "VDDIO"),
+ MXS_ADC_CHAN(7, IIO_VOLTAGE, "VBATT"),
/* Combined Temperature sensors */
{
.type = IIO_TEMP,
@@ -1399,6 +1400,7 @@ static const struct iio_chan_spec mxs_lradc_chan_spec[] = {
BIT(IIO_CHAN_INFO_SCALE),
.channel = 8,
.scan_type = {.sign = 'u', .realbits = 18, .storagebits = 32,},
+ .datasheet_name = "TEMP_DIE",
},
/* Hidden channel to keep indexes */
{
@@ -1407,12 +1409,48 @@ static const struct iio_chan_spec mxs_lradc_chan_spec[] = {
.scan_index = -1,
.channel = 9,
},
- MXS_ADC_CHAN(10, IIO_VOLTAGE),
- MXS_ADC_CHAN(11, IIO_VOLTAGE),
- MXS_ADC_CHAN(12, IIO_VOLTAGE),
- MXS_ADC_CHAN(13, IIO_VOLTAGE),
- MXS_ADC_CHAN(14, IIO_VOLTAGE),
- MXS_ADC_CHAN(15, IIO_VOLTAGE),
+ MXS_ADC_CHAN(10, IIO_VOLTAGE, NULL),
+ MXS_ADC_CHAN(11, IIO_VOLTAGE, NULL),
+ MXS_ADC_CHAN(12, IIO_VOLTAGE, "USB_DP"),
+ MXS_ADC_CHAN(13, IIO_VOLTAGE, "USB_DN"),
+ MXS_ADC_CHAN(14, IIO_VOLTAGE, "VBG"),
+ MXS_ADC_CHAN(15, IIO_VOLTAGE, "VDD5V"),
+};
+
+static const struct iio_chan_spec mx28_lradc_chan_spec[] = {
+ MXS_ADC_CHAN(0, IIO_VOLTAGE, "LRADC0"),
+ MXS_ADC_CHAN(1, IIO_VOLTAGE, "LRADC1"),
+ MXS_ADC_CHAN(2, IIO_VOLTAGE, "LRADC2"),
+ MXS_ADC_CHAN(3, IIO_VOLTAGE, "LRADC3"),
+ MXS_ADC_CHAN(4, IIO_VOLTAGE, "LRADC4"),
+ MXS_ADC_CHAN(5, IIO_VOLTAGE, "LRADC5"),
+ MXS_ADC_CHAN(6, IIO_VOLTAGE, "LRADC6"),
+ MXS_ADC_CHAN(7, IIO_VOLTAGE, "VBATT"),
+ /* Combined Temperature sensors */
+ {
+ .type = IIO_TEMP,
+ .indexed = 1,
+ .scan_index = 8,
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_OFFSET) |
+ BIT(IIO_CHAN_INFO_SCALE),
+ .channel = 8,
+ .scan_type = {.sign = 'u', .realbits = 18, .storagebits = 32,},
+ .datasheet_name = "TEMP_DIE",
+ },
+ /* Hidden channel to keep indexes */
+ {
+ .type = IIO_TEMP,
+ .indexed = 1,
+ .scan_index = -1,
+ .channel = 9,
+ },
+ MXS_ADC_CHAN(10, IIO_VOLTAGE, "VDDIO"),
+ MXS_ADC_CHAN(11, IIO_VOLTAGE, "VTH"),
+ MXS_ADC_CHAN(12, IIO_VOLTAGE, "VDDA"),
+ MXS_ADC_CHAN(13, IIO_VOLTAGE, "VDDD"),
+ MXS_ADC_CHAN(14, IIO_VOLTAGE, "VBG"),
+ MXS_ADC_CHAN(15, IIO_VOLTAGE, "VDD5V"),
};
static int mxs_lradc_hw_init(struct mxs_lradc *lradc)
@@ -1608,10 +1646,16 @@ static int mxs_lradc_probe(struct platform_device *pdev)
iio->dev.parent = &pdev->dev;
iio->info = &mxs_lradc_iio_info;
iio->modes = INDIO_DIRECT_MODE;
- iio->channels = mxs_lradc_chan_spec;
- iio->num_channels = ARRAY_SIZE(mxs_lradc_chan_spec);
iio->masklength = LRADC_MAX_TOTAL_CHANS;
+ if (lradc->soc == IMX23_LRADC) {
+ iio->channels = mx23_lradc_chan_spec;
+ iio->num_channels = ARRAY_SIZE(mx23_lradc_chan_spec);
+ } else {
+ iio->channels = mx28_lradc_chan_spec;
+ iio->num_channels = ARRAY_SIZE(mx28_lradc_chan_spec);
+ }
+
ret = iio_triggered_buffer_setup(iio, &iio_pollfunc_store_time,
&mxs_lradc_trigger_handler,
&mxs_lradc_buffer_ops);