diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/w83781d.c | 52 |
1 files changed, 24 insertions, 28 deletions
diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c index 96338ddd74a7..4f93d79a4308 100644 --- a/drivers/hwmon/w83781d.c +++ b/drivers/hwmon/w83781d.c @@ -164,12 +164,9 @@ static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 }; #define W83781D_REG_RT_IDX 0x50 #define W83781D_REG_RT_VAL 0x51 -/* Conversions. Rounding and limit checking is only done on the TO_REG - variants. Note that you should be a bit careful with which arguments - these macros are called: arguments may be evaluated more than once. - Fixing this is just not worth it. */ -#define IN_TO_REG(val) (SENSORS_LIMIT((((val) * 10 + 8)/16),0,255)) -#define IN_FROM_REG(val) (((val) * 16) / 10) +/* Conversions */ +#define IN_TO_REG(val) SENSORS_LIMIT(((val) + 8) / 16, 0, 255) +#define IN_FROM_REG(val) ((val) * 16) static inline u8 FAN_TO_REG(long rpm, int div) @@ -180,24 +177,24 @@ FAN_TO_REG(long rpm, int div) return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); } -#define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \ - ((val) == 255 ? 0 : \ - 1350000 / ((val) * (div)))) +static inline long +FAN_FROM_REG(u8 val, int div) +{ + if (val == 0) + return -1; + if (val == 255) + return 0; + return 1350000 / (val * div); +} -#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \ - : (val)) / 1000, 0, 0xff)) -#define TEMP_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000) +#define TEMP_TO_REG(val) SENSORS_LIMIT((val) / 1000, -127, 128) +#define TEMP_FROM_REG(val) ((val) * 1000) -#define PWM_FROM_REG(val) (val) -#define PWM_TO_REG(val) (SENSORS_LIMIT((val),0,255)) #define BEEP_MASK_FROM_REG(val,type) ((type) == as99127f ? \ (val) ^ 0x7fff : (val)) #define BEEP_MASK_TO_REG(val,type) ((type) == as99127f ? \ (~(val)) & 0x7fff : (val) & 0xffffff) -#define BEEP_ENABLE_TO_REG(val) ((val) ? 1 : 0) -#define BEEP_ENABLE_FROM_REG(val) ((val) ? 1 : 0) - #define DIV_FROM_REG(val) (1 << (val)) static inline u8 @@ -212,7 +209,7 @@ DIV_TO_REG(long val, enum chips type) break; val >>= 1; } - return ((u8) i); + return i; } /* There are some complications in a module like this. First off, W83781D chips @@ -246,9 +243,9 @@ struct w83781d_data { u8 in_min[9]; /* Register value - 8 & 9 for 782D only */ u8 fan[3]; /* Register value */ u8 fan_min[3]; /* Register value */ - u8 temp; - u8 temp_max; /* Register value */ - u8 temp_max_hyst; /* Register value */ + s8 temp; /* Register value */ + s8 temp_max; /* Register value */ + s8 temp_max_hyst; /* Register value */ u16 temp_add[2]; /* Register value */ u16 temp_max_add[2]; /* Register value */ u16 temp_max_hyst_add[2]; /* Register value */ @@ -303,7 +300,7 @@ static struct platform_driver w83781d_isa_driver = { static ssize_t show_##reg (struct device *dev, char *buf, int nr) \ { \ struct w83781d_data *data = w83781d_update_device(dev); \ - return sprintf(buf,"%ld\n", (long)IN_FROM_REG(data->reg[nr] * 10)); \ + return sprintf(buf, "%ld\n", (long)IN_FROM_REG(data->reg[nr])); \ } show_in_reg(in); show_in_reg(in_min); @@ -316,7 +313,7 @@ static ssize_t store_in_##reg (struct device *dev, const char *buf, size_t count struct i2c_client *client = &data->client; \ u32 val; \ \ - val = simple_strtoul(buf, NULL, 10) / 10; \ + val = simple_strtoul(buf, NULL, 10); \ \ mutex_lock(&data->update_lock); \ data->in_##reg[nr] = IN_TO_REG(val); \ @@ -534,8 +531,7 @@ static ssize_t show_beep_mask (struct device *dev, struct device_attribute *attr static ssize_t show_beep_enable (struct device *dev, struct device_attribute *attr, char *buf) { struct w83781d_data *data = w83781d_update_device(dev); - return sprintf(buf, "%ld\n", - (long)BEEP_ENABLE_FROM_REG(data->beep_enable)); + return sprintf(buf, "%ld\n", (long)data->beep_enable); } #define BEEP_ENABLE 0 /* Store beep_enable */ @@ -566,7 +562,7 @@ store_beep_reg(struct device *dev, const char *buf, size_t count, val2 = (data->beep_mask >> 8) & 0x7f; } else { /* We are storing beep_enable */ val2 = w83781d_read_value(client, W83781D_REG_BEEP_INTS2) & 0x7f; - data->beep_enable = BEEP_ENABLE_TO_REG(val); + data->beep_enable = !!val; } w83781d_write_value(client, W83781D_REG_BEEP_INTS2, @@ -659,7 +655,7 @@ static ssize_t show_pwm_reg(struct device *dev, char *buf, int nr) { struct w83781d_data *data = w83781d_update_device(dev); - return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr - 1])); + return sprintf(buf, "%ld\n", (long)data->pwm[nr - 1]); } static ssize_t @@ -679,7 +675,7 @@ store_pwm_reg(struct device *dev, const char *buf, size_t count, int nr) val = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); - data->pwm[nr - 1] = PWM_TO_REG(val); + data->pwm[nr - 1] = SENSORS_LIMIT(val, 0, 255); w83781d_write_value(client, W83781D_REG_PWM(nr), data->pwm[nr - 1]); mutex_unlock(&data->update_lock); return count; |