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iio: ti_tscadc: provide datasheet_name and scan_type
This patch provides the members "datasheet_name" and scan_type. This is the remaining part of the earlier patch where I (bigeasy) removed iio_map because it is now supplied by the device tree. It also static names as suggested by Jonathan. Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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1 changed files with 24 additions and 5 deletions
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@ -24,6 +24,8 @@
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#include <linux/iio/iio.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/iio/machine.h>
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#include <linux/iio/driver.h>
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#include <linux/mfd/ti_am335x_tscadc.h>
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@ -84,29 +86,46 @@ static void tiadc_step_config(struct tiadc_device *adc_dev)
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am335x_tsc_se_set(adc_dev->mfd_tscadc, step_en);
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}
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static const char * const chan_name_ain[] = {
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"AIN0",
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"AIN1",
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"AIN2",
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"AIN3",
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"AIN4",
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"AIN5",
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"AIN6",
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"AIN7",
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};
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static int tiadc_channel_init(struct iio_dev *indio_dev, int channels)
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{
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struct tiadc_device *adc_dev = iio_priv(indio_dev);
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struct iio_chan_spec *chan_array;
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struct iio_chan_spec *chan;
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int i;
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indio_dev->num_channels = channels;
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chan_array = kcalloc(indio_dev->num_channels,
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chan_array = kcalloc(channels,
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sizeof(struct iio_chan_spec), GFP_KERNEL);
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if (chan_array == NULL)
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return -ENOMEM;
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for (i = 0; i < (indio_dev->num_channels); i++) {
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struct iio_chan_spec *chan = chan_array + i;
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chan = chan_array;
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for (i = 0; i < channels; i++, chan++) {
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chan->type = IIO_VOLTAGE;
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chan->indexed = 1;
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chan->channel = i;
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chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
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chan->datasheet_name = chan_name_ain[i];
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chan->scan_type.sign = 'u';
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chan->scan_type.realbits = 12;
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chan->scan_type.storagebits = 32;
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}
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indio_dev->channels = chan_array;
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return indio_dev->num_channels;
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return 0;
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}
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static void tiadc_channels_remove(struct iio_dev *indio_dev)
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