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| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2020-12-04 05:55:04 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-01-16 21:34:29 +0300 |
| commit | 48d2e2ff85ddf7d4e88af2ee12e72818f5315a23 (patch) | |
| tree | 9738931a5e4fe37d3eb1326b83d8c8a2496afd27 /drivers/iio | |
| parent | 3bd0ceb566f700adc5d164f431d1da039374aa97 (diff) | |
| download | linux-48d2e2ff85ddf7d4e88af2ee12e72818f5315a23.tar.xz | |
iio: adc: qcom-vadc-common: simplify qcom_vadc_map_voltage_temp
All volt-temp tables here are sorted in descending order. There is no
need to accout for (unused) ascending table sorting case, so simplify
the conversion function.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20201204025509.1075506-11-dmitry.baryshkov@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/qcom-vadc-common.c | 21 |
1 files changed, 1 insertions, 20 deletions
diff --git a/drivers/iio/adc/qcom-vadc-common.c b/drivers/iio/adc/qcom-vadc-common.c index 0c705bb473fe..441843827f05 100644 --- a/drivers/iio/adc/qcom-vadc-common.c +++ b/drivers/iio/adc/qcom-vadc-common.c @@ -346,38 +346,19 @@ static struct qcom_adc5_scale_type scale_adc5_fn[] = { static int qcom_vadc_map_voltage_temp(const struct vadc_map_pt *pts, u32 tablesize, s32 input, int *output) { - bool descending = 1; u32 i = 0; if (!pts) return -EINVAL; - /* Check if table is descending or ascending */ - if (tablesize > 1) { - if (pts[0].x < pts[1].x) - descending = 0; - } - - while (i < tablesize) { - if ((descending) && (pts[i].x < input)) { - /* table entry is less than measured*/ - /* value and table is descending, stop */ - break; - } else if ((!descending) && - (pts[i].x > input)) { - /* table entry is greater than measured*/ - /*value and table is ascending, stop */ - break; - } + while (i < tablesize && pts[i].x > input) i++; - } if (i == 0) { *output = pts[0].y; } else if (i == tablesize) { *output = pts[tablesize - 1].y; } else { - /* result is between search_index and search_index-1 */ /* interpolate linearly */ *output = fixp_linear_interpolate(pts[i - 1].x, pts[i - 1].y, pts[i].x, pts[i].y, |