From 0f3721c51ec5643e00f07dd3bbc5712c72fc62b2 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Thu, 16 Apr 2015 12:43:36 -0700 Subject: [PATCH] hwmon: (lm85) use find_closest() in x_TO_REG() functions Replace RANGE_TO_REG() and FREQ_TO_REG() implementations with calls to find_closest(). Signed-off-by: Bartosz Golaszewski Cc: Guenter Roeck Cc: Steven Rostedt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/hwmon/lm85.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c index 2b4b419..6ff773f 100644 --- a/drivers/hwmon/lm85.c +++ b/drivers/hwmon/lm85.c @@ -34,6 +34,7 @@ #include #include #include +#include /* Addresses to scan */ static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; @@ -190,15 +191,7 @@ static const int lm85_range_map[] = { static int RANGE_TO_REG(long range) { - int i; - - /* Find the closest match */ - for (i = 0; i < 15; ++i) { - if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2) - break; - } - - return i; + return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map)); } #define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f] @@ -209,16 +202,12 @@ static const int lm85_freq_map[8] = { /* 1 Hz */ static const int adm1027_freq_map[8] = { /* 1 Hz */ 11, 15, 22, 29, 35, 44, 59, 88 }; +#define FREQ_MAP_LEN 8 -static int FREQ_TO_REG(const int *map, unsigned long freq) +static int FREQ_TO_REG(const int *map, + unsigned int map_size, unsigned long freq) { - int i; - - /* Find the closest match */ - for (i = 0; i < 7; ++i) - if (freq <= (map[i] + map[i + 1]) / 2) - break; - return i; + return find_closest(freq, map, map_size); } static int FREQ_FROM_REG(const int *map, u8 reg) @@ -828,7 +817,8 @@ static ssize_t set_pwm_freq(struct device *dev, data->cfg5 &= ~ADT7468_HFPWM; lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5); } else { /* Low freq. mode */ - data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val); + data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, + FREQ_MAP_LEN, val); lm85_write_value(client, LM85_REG_AFAN_RANGE(nr), (data->zone[nr].range << 4) | data->pwm_freq[nr]); -- 2.7.4