iio: potentiometer: tpl0102: add IIO_AVAIL_RANGE support (74cf7b86) · Commits · 戴 / test

drivers/iio/potentiometer/tpl0102.c

+27 −7

Original line number	Diff line number	Diff line
		@@ -15,7 +15,7 @@

		struct tpl0102_cfg {
		int wipers;
		int max_pos;
		int avail[3];
		int kohms;
		};

		@@ -28,11 +28,11 @@ enum tpl0102_type {

		static const struct tpl0102_cfg tpl0102_cfg[] = {
		/* on-semiconductor parts */
		[CAT5140_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, },
		[CAT5140_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, },
		[CAT5140_503] = { .wipers = 1, .avail = { 0, 1, 255 }, .kohms = 50, },
		[CAT5140_104] = { .wipers = 1, .avail = { 0, 1, 255 }, .kohms = 100, },
		/* ti parts */
		[TPL0102_104] = { .wipers = 2, .max_pos = 256, .kohms = 100 },
		[TPL0401_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, },
		[TPL0102_104] = { .wipers = 2, .avail = { 0, 1, 255 }, .kohms = 100 },
		[TPL0401_103] = { .wipers = 1, .avail = { 0, 1, 127 }, .kohms = 10, },
		};

		struct tpl0102_data {
		@@ -52,6 +52,7 @@ static const struct regmap_config tpl0102_regmap_config = {
		.channel = (ch), \
		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
		.info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW), \
		}

		static const struct iio_chan_spec tpl0102_channels[] = {
		@@ -73,13 +74,31 @@ static int tpl0102_read_raw(struct iio_dev *indio_dev,
		}
		case IIO_CHAN_INFO_SCALE:
		val = 1000 data->cfg->kohms;
		*val2 = data->cfg->max_pos;
		*val2 = data->cfg->avail[2] + 1;
		return IIO_VAL_FRACTIONAL;
		}

		return -EINVAL;
		}

		static int tpl0102_read_avail(struct iio_dev *indio_dev,
		struct iio_chan_spec const *chan,
		const int *vals, int type, int *length,
		long mask)
		{
		struct tpl0102_data *data = iio_priv(indio_dev);

		switch (mask) {
		case IIO_CHAN_INFO_RAW:
		*length = ARRAY_SIZE(data->cfg->avail);
		*vals = data->cfg->avail;
		*type = IIO_VAL_INT;
		return IIO_AVAIL_RANGE;
		}

		return -EINVAL;
		}

		static int tpl0102_write_raw(struct iio_dev *indio_dev,
		struct iio_chan_spec const *chan,
		int val, int val2, long mask)
		@@ -89,7 +108,7 @@ static int tpl0102_write_raw(struct iio_dev *indio_dev,
		if (mask != IIO_CHAN_INFO_RAW)
		return -EINVAL;

		if (val >= data->cfg->max_pos \|\| val < 0)
		if (val > data->cfg->avail[2] \|\| val < 0)
		return -EINVAL;

		return regmap_write(data->regmap, chan->channel, val);
		@@ -97,6 +116,7 @@ static int tpl0102_write_raw(struct iio_dev *indio_dev,

		static const struct iio_info tpl0102_info = {
		.read_raw = tpl0102_read_raw,
		.read_avail = tpl0102_read_avail,
		.write_raw = tpl0102_write_raw,
		};

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