From e1169ba0aea187d0ea15d6f98bc818cab37335e5 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 19 Dec 2012 22:17:01 +0100 Subject: [PATCH] hwmon: (it87) Save fan registers in 2-dimensional array Also unify fan functions to use the same code for 8 and 16 bit fans. This patch reduces code size by approximately 1,200 bytes on x86_64. Signed-off-by: Guenter Roeck Signed-off-by: Jean Delvare --- drivers/hwmon/it87.c | 263 +++++++++++++++++-------------------------- 1 file changed, 104 insertions(+), 159 deletions(-) diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 767563269182..e0d1910c04d9 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -262,8 +262,7 @@ struct it87_data { u16 in_scaled; /* Internal voltage sensors are scaled */ u8 in[9][3]; /* [nr][0]=in, [1]=min, [2]=max */ u8 has_fan; /* Bitfield, fans enabled */ - u16 fan[5]; /* Register values, possibly combined */ - u16 fan_min[5]; /* Register values, possibly combined */ + u16 fan[5][2]; /* Register values, [nr][0]=fan, [1]=min */ u8 has_temp; /* Bitfield, temp sensors enabled */ s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */ u8 sensor; /* Register value */ @@ -687,25 +686,21 @@ static int pwm_mode(const struct it87_data *data, int nr) } static ssize_t show_fan(struct device *dev, struct device_attribute *attr, - char *buf) + char *buf) { - struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); - int nr = sensor_attr->index; - + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; + int speed; struct it87_data *data = it87_update_device(dev); - return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], - DIV_FROM_REG(data->fan_div[nr]))); -} -static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); - int nr = sensor_attr->index; - struct it87_data *data = it87_update_device(dev); - return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], - DIV_FROM_REG(data->fan_div[nr]))); + speed = has_16bit_fans(data) ? + FAN16_FROM_REG(data->fan[nr][index]) : + FAN_FROM_REG(data->fan[nr][index], + DIV_FROM_REG(data->fan_div[nr])); + return sprintf(buf, "%d\n", speed); } + static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, char *buf) { @@ -742,11 +737,13 @@ static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, return sprintf(buf, "%u\n", pwm_freq[index]); } -static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) + +static ssize_t set_fan(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) { - struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); - int nr = sensor_attr->index; + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; struct it87_data *data = dev_get_drvdata(dev); long val; @@ -756,24 +753,36 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, return -EINVAL; mutex_lock(&data->update_lock); - reg = it87_read_value(data, IT87_REG_FAN_DIV); - switch (nr) { - case 0: - data->fan_div[nr] = reg & 0x07; - break; - case 1: - data->fan_div[nr] = (reg >> 3) & 0x07; - break; - case 2: - data->fan_div[nr] = (reg & 0x40) ? 3 : 1; - break; + + if (has_16bit_fans(data)) { + data->fan[nr][index] = FAN16_TO_REG(val); + it87_write_value(data, IT87_REG_FAN_MIN[nr], + data->fan[nr][index] & 0xff); + it87_write_value(data, IT87_REG_FANX_MIN[nr], + data->fan[nr][index] >> 8); + } else { + reg = it87_read_value(data, IT87_REG_FAN_DIV); + switch (nr) { + case 0: + data->fan_div[nr] = reg & 0x07; + break; + case 1: + data->fan_div[nr] = (reg >> 3) & 0x07; + break; + case 2: + data->fan_div[nr] = (reg & 0x40) ? 3 : 1; + break; + } + data->fan[nr][index] = + FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); + it87_write_value(data, IT87_REG_FAN_MIN[nr], + data->fan[nr][index]); } - data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); - it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); mutex_unlock(&data->update_lock); return count; } + static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -792,7 +801,7 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, old = it87_read_value(data, IT87_REG_FAN_DIV); /* Save fan min limit */ - min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); + min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr])); switch (nr) { case 0: @@ -813,8 +822,8 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, it87_write_value(data, IT87_REG_FAN_DIV, val); /* Restore fan min limit */ - data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); - it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); + data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); + it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]); mutex_unlock(&data->update_lock); return count; @@ -1087,17 +1096,31 @@ static ssize_t set_auto_temp(struct device *dev, return count; } -#define show_fan_offset(offset) \ -static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ - show_fan, NULL, offset - 1); \ -static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ - show_fan_min, set_fan_min, offset - 1); \ -static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ - show_fan_div, set_fan_div, offset - 1); +static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0); +static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 0, 1); +static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div, + set_fan_div, 0); + +static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0); +static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 1, 1); +static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div, + set_fan_div, 1); + +static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0); +static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 2, 1); +static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div, + set_fan_div, 2); + +static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0); +static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 3, 1); -show_fan_offset(1); -show_fan_offset(2); -show_fan_offset(3); +static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0); +static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 4, 1); #define show_pwm_offset(offset) \ static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ @@ -1141,65 +1164,6 @@ show_pwm_offset(1); show_pwm_offset(2); show_pwm_offset(3); -/* A different set of callbacks for 16-bit fans */ -static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); - int nr = sensor_attr->index; - struct it87_data *data = it87_update_device(dev); - return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); -} - -static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); - int nr = sensor_attr->index; - struct it87_data *data = it87_update_device(dev); - return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); -} - -static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); - int nr = sensor_attr->index; - struct it87_data *data = dev_get_drvdata(dev); - long val; - - if (kstrtol(buf, 10, &val) < 0) - return -EINVAL; - - mutex_lock(&data->update_lock); - data->fan_min[nr] = FAN16_TO_REG(val); - it87_write_value(data, IT87_REG_FAN_MIN[nr], - data->fan_min[nr] & 0xff); - it87_write_value(data, IT87_REG_FANX_MIN[nr], - data->fan_min[nr] >> 8); - mutex_unlock(&data->update_lock); - return count; -} - -/* - * We want to use the same sysfs file names as 8-bit fans, but we need - * different variable names, so we have to use SENSOR_ATTR instead of - * SENSOR_DEVICE_ATTR. - */ -#define show_fan16_offset(offset) \ -static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ - = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ - show_fan16, NULL, offset - 1); \ -static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ - = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ - show_fan16_min, set_fan16_min, offset - 1) - -show_fan16_offset(1); -show_fan16_offset(2); -show_fan16_offset(3); -show_fan16_offset(4); -show_fan16_offset(5); - /* Alarms */ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) @@ -1501,73 +1465,47 @@ static struct attribute *it87_attributes_temp_beep[] = { &sensor_dev_attr_temp3_beep.dev_attr.attr, }; -static struct attribute *it87_attributes_fan16[5][3+1] = { { - &sensor_dev_attr_fan1_input16.dev_attr.attr, - &sensor_dev_attr_fan1_min16.dev_attr.attr, +static struct attribute *it87_attributes_fan[5][3+1] = { { + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr, NULL }, { - &sensor_dev_attr_fan2_input16.dev_attr.attr, - &sensor_dev_attr_fan2_min16.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, NULL }, { - &sensor_dev_attr_fan3_input16.dev_attr.attr, - &sensor_dev_attr_fan3_min16.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan3_min.dev_attr.attr, &sensor_dev_attr_fan3_alarm.dev_attr.attr, NULL }, { - &sensor_dev_attr_fan4_input16.dev_attr.attr, - &sensor_dev_attr_fan4_min16.dev_attr.attr, + &sensor_dev_attr_fan4_input.dev_attr.attr, + &sensor_dev_attr_fan4_min.dev_attr.attr, &sensor_dev_attr_fan4_alarm.dev_attr.attr, NULL }, { - &sensor_dev_attr_fan5_input16.dev_attr.attr, - &sensor_dev_attr_fan5_min16.dev_attr.attr, + &sensor_dev_attr_fan5_input.dev_attr.attr, + &sensor_dev_attr_fan5_min.dev_attr.attr, &sensor_dev_attr_fan5_alarm.dev_attr.attr, NULL } }; -static const struct attribute_group it87_group_fan16[5] = { - { .attrs = it87_attributes_fan16[0] }, - { .attrs = it87_attributes_fan16[1] }, - { .attrs = it87_attributes_fan16[2] }, - { .attrs = it87_attributes_fan16[3] }, - { .attrs = it87_attributes_fan16[4] }, +static const struct attribute_group it87_group_fan[5] = { + { .attrs = it87_attributes_fan[0] }, + { .attrs = it87_attributes_fan[1] }, + { .attrs = it87_attributes_fan[2] }, + { .attrs = it87_attributes_fan[3] }, + { .attrs = it87_attributes_fan[4] }, }; -static struct attribute *it87_attributes_fan[3][4+1] = { { - &sensor_dev_attr_fan1_input.dev_attr.attr, - &sensor_dev_attr_fan1_min.dev_attr.attr, +static const struct attribute *it87_attributes_fan_div[] = { &sensor_dev_attr_fan1_div.dev_attr.attr, - &sensor_dev_attr_fan1_alarm.dev_attr.attr, - NULL -}, { - &sensor_dev_attr_fan2_input.dev_attr.attr, - &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan2_div.dev_attr.attr, - &sensor_dev_attr_fan2_alarm.dev_attr.attr, - NULL -}, { - &sensor_dev_attr_fan3_input.dev_attr.attr, - &sensor_dev_attr_fan3_min.dev_attr.attr, &sensor_dev_attr_fan3_div.dev_attr.attr, - &sensor_dev_attr_fan3_alarm.dev_attr.attr, - NULL -} }; - -static const struct attribute_group it87_group_fan[3] = { - { .attrs = it87_attributes_fan[0] }, - { .attrs = it87_attributes_fan[1] }, - { .attrs = it87_attributes_fan[2] }, }; -static const struct attribute_group * -it87_get_fan_group(const struct it87_data *data) -{ - return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan; -} - static struct attribute *it87_attributes_pwm[3][4+1] = { { &sensor_dev_attr_pwm1_enable.dev_attr.attr, &sensor_dev_attr_pwm1.dev_attr.attr, @@ -1926,7 +1864,6 @@ static void it87_remove_files(struct device *dev) { struct it87_data *data = platform_get_drvdata(pdev); struct it87_sio_data *sio_data = dev->platform_data; - const struct attribute_group *fan_group = it87_get_fan_group(data); int i; sysfs_remove_group(&dev->kobj, &it87_group); @@ -1952,10 +1889,13 @@ static void it87_remove_files(struct device *dev) for (i = 0; i < 5; i++) { if (!(data->has_fan & (1 << i))) continue; - sysfs_remove_group(&dev->kobj, &fan_group[i]); + sysfs_remove_group(&dev->kobj, &it87_group_fan[i]); if (sio_data->beep_pin) sysfs_remove_file(&dev->kobj, it87_attributes_fan_beep[i]); + if (i < 3 && !has_16bit_fans(data)) + sysfs_remove_file(&dev->kobj, + it87_attributes_fan_div[i]); } for (i = 0; i < 3; i++) { if (sio_data->skip_pwm & (1 << 0)) @@ -1976,7 +1916,6 @@ static int it87_probe(struct platform_device *pdev) struct resource *res; struct device *dev = &pdev->dev; struct it87_sio_data *sio_data = dev->platform_data; - const struct attribute_group *fan_group; int err = 0, i; int enable_pwm_interface; int fan_beep_need_rw; @@ -2087,15 +2026,21 @@ static int it87_probe(struct platform_device *pdev) } /* Do not create fan files for disabled fans */ - fan_group = it87_get_fan_group(data); fan_beep_need_rw = 1; for (i = 0; i < 5; i++) { if (!(data->has_fan & (1 << i))) continue; - err = sysfs_create_group(&dev->kobj, &fan_group[i]); + err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]); if (err) goto error; + if (i < 3 && !has_16bit_fans(data)) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_fan_div[i]); + if (err) + goto error; + } + if (sio_data->beep_pin) { err = sysfs_create_file(&dev->kobj, it87_attributes_fan_beep[i]); @@ -2414,15 +2359,15 @@ static struct it87_data *it87_update_device(struct device *dev) if (!(data->has_fan & (1 << i))) continue; - data->fan_min[i] = + data->fan[i][1] = it87_read_value(data, IT87_REG_FAN_MIN[i]); - data->fan[i] = it87_read_value(data, + data->fan[i][0] = it87_read_value(data, IT87_REG_FAN[i]); /* Add high byte if in 16-bit mode */ if (has_16bit_fans(data)) { - data->fan[i] |= it87_read_value(data, + data->fan[i][0] |= it87_read_value(data, IT87_REG_FANX[i]) << 8; - data->fan_min[i] |= it87_read_value(data, + data->fan[i][1] |= it87_read_value(data, IT87_REG_FANX_MIN[i]) << 8; } } -- 2.20.1