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gpu: nvgpu: support negative temperatures

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Jira DNVGPU-166

Change-Id: Id0561d49c64096ad5cbcd23bd371b49b2e0db57c
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1245557
(cherry picked from commit 2e0269c76fdda5c8e1a30ca7ef73a08ebe644f88)
Reviewed-on: http://git-master/r/1267156
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Thomas Fleury
2016-10-27 10:28:37 -07:00
committed by mobile promotions
parent 02b8cda953
commit 0250221955
2 changed files with 5 additions and 4 deletions
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4
drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
View File

@@ -1278,9 +1278,7 @@ static int nvgpu_gpu_get_temperature(struct gk20a *g,
gk20a_idle(g->dev);
/* Convert from standard S24.8 fixed point to mC */
if (!err)
args->temperature = (temp_f24_8 * 1000) / 256;
args->temp_f24_8 = (s32)temp_f24_8;
return err;
}

5
include/uapi/linux/nvgpu.h
View File

@@ -743,7 +743,10 @@ struct nvgpu_gpu_get_power_args {
struct nvgpu_gpu_get_temperature_args {
__u32 reserved[3];
__u32 temperature; /* mC */
/* Temperature in signed fixed point format SFXP24.8
* Celsius = temp_f24_8 / 256.
*/
__s32 temp_f24_8;
};
#define NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE \