Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-07 20:51:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/nouveau/temp: Fix signed/unsigned int logic

Browse Source 
Many (all?) of the coefficients related to calculating the
correct temperature are signed integers

This patch correcly parses and stores those values
It also ensures that the default offset is 0 (previously 1)

Affected cards - the original nv50 and the nv40 family

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Emil Velikov 2011-06-22 02:13:23 +01:00 committed by Ben Skeggs
parent 0b33c93659
commit 40ce4279e1
2 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/nouveau/nouveau_drv.h
View File

@ -461,9 +461,9 @@ struct nouveau_pm_level {
struct nouveau_pm_temp_sensor_constants {
u16 offset_constant;
s16 offset_mult;
u16 offset_div;
u16 slope_mult;
u16 slope_div;
s16 offset_div;
s16 slope_mult;
s16 slope_div;
};
struct nouveau_pm_threshold_temp {

8
drivers/gpu/drm/nouveau/nouveau_temp.c
View File

@ -43,7 +43,7 @@ nouveau_temp_vbios_parse(struct drm_device *dev, u8 *temp)
/* Set the default sensor's contants */
sensor->offset_constant = 0;
sensor->offset_mult = 1;
sensor->offset_mult = 0;
sensor->offset_div = 1;
sensor->slope_mult = 1;
sensor->slope_div = 1;
@ -109,7 +109,7 @@ nouveau_temp_vbios_parse(struct drm_device *dev, u8 *temp)
/* Read the entries from the table */
for (i = 0; i < entries; i++) {
u16 value = ROM16(temp[1]);
s16 value = ROM16(temp[1]);
switch (temp[0]) {
case 0x01:
@ -160,8 +160,8 @@ nv40_sensor_setup(struct drm_device *dev)
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_temp_sensor_constants *sensor = &pm->sensor_constants;
u32 offset = sensor->offset_mult / sensor->offset_div;
u32 sensor_calibration;
s32 offset = sensor->offset_mult / sensor->offset_div;
s32 sensor_calibration;
/* set up the sensors */
sensor_calibration = 120 - offset - sensor->offset_constant;