staging: iio: tsl2x7x: remove ch0 and ch1 variables from tsl2x7x_get_lux()

Remove the ch0 and ch1 variables from tsl2x7x_get_lux() and
write those values directly into the chip->als_cur_info.als_ch0
and chip->als_cur_info.als_ch01 variables.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
index 1e38e8449f9ed1e75453c5b77dc53f34823865f6..65b7fbca8c5d2a9119521133130ccfdba3cbfb82 100644 (file)
--- a/drivers/staging/iio/light/tsl2x7x.c
+++ b/drivers/staging/iio/light/tsl2x7x.c
@@ -336,7 +336,6 @@ static int tsl2x7x_write_control_reg(struct tsl2X7X_chip *chip, u8 data)
  */
 static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
 {
-       u16 ch0, ch1; /* separated ch0/ch1 data from device */
        u32 lux; /* raw lux calculated from device data */
        u64 lux64;
        u32 ratio;
@@ -382,24 +381,24 @@ static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
        }
 
        /* extract ALS/lux data */
-       ch0 = le16_to_cpup((const __le16 *)&buf[0]);
-       ch1 = le16_to_cpup((const __le16 *)&buf[2]);
+       chip->als_cur_info.als_ch0 = le16_to_cpup((const __le16 *)&buf[0]);
+       chip->als_cur_info.als_ch1 = le16_to_cpup((const __le16 *)&buf[2]);
 
-       chip->als_cur_info.als_ch0 = ch0;
-       chip->als_cur_info.als_ch1 = ch1;
-
-       if (ch0 >= chip->als_saturation || ch1 >= chip->als_saturation) {
+       if (chip->als_cur_info.als_ch0 >= chip->als_saturation ||
+           chip->als_cur_info.als_ch1 >= chip->als_saturation) {
                lux = TSL2X7X_LUX_CALC_OVER_FLOW;
                goto return_max;
        }
 
-       if (!ch0) {
+       if (!chip->als_cur_info.als_ch0) {
                /* have no data, so return LAST VALUE */
                ret = chip->als_cur_info.lux;
                goto out_unlock;
        }
+
        /* calculate ratio */
-       ratio = (ch1 << 15) / ch0;
+       ratio = (chip->als_cur_info.als_ch1 << 15) / chip->als_cur_info.als_ch0;
+
        /* convert to unscaled lux using the pointer to the table */
        p = (struct tsl2x7x_lux *)chip->tsl2x7x_device_lux;
        while (p->ratio != 0 && p->ratio < ratio)
@@ -408,9 +407,9 @@ static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
        if (p->ratio == 0) {
                lux = 0;
        } else {
-               lux = DIV_ROUND_UP(ch0 * p->ch0,
+               lux = DIV_ROUND_UP(chip->als_cur_info.als_ch0 * p->ch0,
                                   tsl2x7x_als_gain[chip->settings.als_gain]) -
-                     DIV_ROUND_UP(ch1 * p->ch1,
+                     DIV_ROUND_UP(chip->als_cur_info.als_ch1 * p->ch1,
                                   tsl2x7x_als_gain[chip->settings.als_gain]);
        }