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>
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@ -36,6 +36,7 @@
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#include <linux/jiffies.h>
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#include <linux/of.h>
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#include <linux/delay.h>
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#include <linux/util_macros.h>
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#include <linux/platform_data/ina2xx.h>
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@ -141,19 +142,6 @@ static const struct ina2xx_config ina2xx_config[] = {
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*/
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static const int ina226_avg_tab[] = { 1, 4, 16, 64, 128, 256, 512, 1024 };
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static int ina226_avg_bits(int avg)
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{
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int i;
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/* Get the closest average from the tab. */
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for (i = 0; i < ARRAY_SIZE(ina226_avg_tab) - 1; i++) {
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if (avg <= (ina226_avg_tab[i] + ina226_avg_tab[i + 1]) / 2)
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break;
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}
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return i; /* Return 0b0111 for values greater than 1024. */
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}
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static int ina226_reg_to_interval(u16 config)
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{
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int avg = ina226_avg_tab[INA226_READ_AVG(config)];
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@ -171,7 +159,8 @@ static u16 ina226_interval_to_reg(int interval, u16 config)
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avg = DIV_ROUND_CLOSEST(interval * 1000,
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INA226_TOTAL_CONV_TIME_DEFAULT);
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avg_bits = ina226_avg_bits(avg);
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avg_bits = find_closest(avg, ina226_avg_tab,
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ARRAY_SIZE(ina226_avg_tab));
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return (config & ~INA226_AVG_RD_MASK) | INA226_SHIFT_AVG(avg_bits);
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}
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