iio: light: opt3001: extract int. time constants

Extract integration times as #define constants. This prepares using them
for delay/timeout length determination.

Signed-off-by: Alexander Koch <mail@alexanderkoch.net>
Signed-off-by: Michael Hornung <mhornung.linux@gmail.com>
Tested-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
index 01e111e..aefbd79 100644 (file)
--- a/drivers/iio/light/opt3001.c
+++ b/drivers/iio/light/opt3001.c
@@ -65,6 +65,9 @@
 #define OPT3001_REG_EXPONENT(n)                ((n) >> 12)
 #define OPT3001_REG_MANTISSA(n)                ((n) & 0xfff)
 
+#define OPT3001_INT_TIME_LONG          800000
+#define OPT3001_INT_TIME_SHORT         100000
+
 /*
  * Time to wait for conversion result to be ready. The device datasheet
  * worst-case max value is 880ms. Add some slack to be on the safe side.
@@ -325,13 +328,13 @@ static int opt3001_set_int_time(struct opt3001 *opt, int time)
        reg = ret;
 
        switch (time) {
-       case 100000:
+       case OPT3001_INT_TIME_SHORT:
                reg &= ~OPT3001_CONFIGURATION_CT;
-               opt->int_time = 100000;
+               opt->int_time = OPT3001_INT_TIME_SHORT;
                break;
-       case 800000:
+       case OPT3001_INT_TIME_LONG:
                reg |= OPT3001_CONFIGURATION_CT;
-               opt->int_time = 800000;
+               opt->int_time = OPT3001_INT_TIME_LONG;
                break;
        default:
                return -EINVAL;
@@ -597,9 +600,9 @@ static int opt3001_configure(struct opt3001 *opt)
 
        /* Reflect status of the device's integration time setting */
        if (reg & OPT3001_CONFIGURATION_CT)
-               opt->int_time = 800000;
+               opt->int_time = OPT3001_INT_TIME_LONG;
        else
-               opt->int_time = 100000;
+               opt->int_time = OPT3001_INT_TIME_SHORT;
 
        /* Ensure device is in shutdown initially */
        opt3001_set_mode(opt, &reg, OPT3001_CONFIGURATION_M_SHUTDOWN);