diff options
| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2015-04-16 12:43:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-17 09:03:54 -0400 |
| commit | d38df34e3f0ea1e65c7db5d33d132dc14da0009a (patch) | |
| tree | caa8aef32e6160ea46bb99f9ecec04bd51bd97ae /drivers/hwmon | |
| parent | f2027543b9cb47e1853d8c34fe931e2fcee5cb65 (diff) | |
hwmon: (ina2xx) replace ina226_avg_bits() with find_closest()
Use find_closest() to locate the closest average in ina226_avg_tab.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/ina2xx.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index d1542b7d4bc3..4d2815079fc2 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -36,6 +36,7 @@ #include <linux/jiffies.h> #include <linux/of.h> #include <linux/delay.h> +#include <linux/util_macros.h> #include <linux/platform_data/ina2xx.h> @@ -141,19 +142,6 @@ static const struct ina2xx_config ina2xx_config[] = { */ static const int ina226_avg_tab[] = { 1, 4, 16, 64, 128, 256, 512, 1024 }; -static int ina226_avg_bits(int avg) -{ - int i; - - /* Get the closest average from the tab. */ - for (i = 0; i < ARRAY_SIZE(ina226_avg_tab) - 1; i++) { - if (avg <= (ina226_avg_tab[i] + ina226_avg_tab[i + 1]) / 2) - break; - } - - return i; /* Return 0b0111 for values greater than 1024. */ -} - static int ina226_reg_to_interval(u16 config) { int avg = ina226_avg_tab[INA226_READ_AVG(config)]; @@ -171,7 +159,8 @@ static u16 ina226_interval_to_reg(int interval, u16 config) avg = DIV_ROUND_CLOSEST(interval * 1000, INA226_TOTAL_CONV_TIME_DEFAULT); - avg_bits = ina226_avg_bits(avg); + avg_bits = find_closest(avg, ina226_avg_tab, + ARRAY_SIZE(ina226_avg_tab)); return (config & ~INA226_AVG_RD_MASK) | INA226_SHIFT_AVG(avg_bits); } |