mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-28 03:40:04 +00:00
Code Issues Releases Wiki Activity

drm/amdgpu: Simplify calculation in *get_sleep_divider_id_from_clock

Browse source 
a / (1 << b) is equivalent to a >> b for unsigned values

Signed-off-by: Nils Wallménius <nils.wallmenius@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nils Wallménius 2016-05-05 09:07:47 +02:00 committed by Alex Deucher
parent 9887e425f9
commit 354ef928a0
5 changed files with 5 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpu/drm/amd/amdgpu/ci_dpm.c
View file

@ -2560,7 +2560,7 @@ static u8 ci_get_sleep_divider_id_from_clock(struct amdgpu_device *adev,
return 0;
for (i = CISLAND_MAX_DEEPSLEEP_DIVIDER_ID; ; i--) {
tmp = sclk / (1 << i);
tmp = sclk >> i;
if (tmp >= min || i == 0)
break;
}

7
drivers/gpu/drm/amd/amdgpu/kv_dpm.c
View file

@ -135,11 +135,6 @@ static void sumo_take_smu_control(struct amdgpu_device *adev, bool enable)
#endif
}
static u32 sumo_get_sleep_divider_from_id(u32 id)
{
return 1 << id;
}
static void sumo_construct_sclk_voltage_mapping_table(struct amdgpu_device *adev,
struct sumo_sclk_voltage_mapping_table *sclk_voltage_mapping_table,
ATOM_AVAILABLE_SCLK_LIST *table)
@ -2185,7 +2180,7 @@ static u8 kv_get_sleep_divider_id_from_clock(struct amdgpu_device *adev,
return 0;
for (i = KV_MAX_DEEPSLEEP_DIVIDER_ID; i > 0; i--) {
temp = sclk / sumo_get_sleep_divider_from_id(i);
temp = sclk >> i;
if (temp >= min)
break;
}

2
drivers/gpu/drm/amd/powerplay/hwmgr/fiji_hwmgr.c
View file

@ -1907,7 +1907,7 @@ static uint8_t fiji_get_sleep_divider_id_from_clock(struct pp_hwmgr *hwmgr,
PP_ASSERT_WITH_CODE((clock >= min), "Engine clock can't satisfy stutter requirement!", return 0);
for (i = FIJI_MAX_DEEPSLEEP_DIVIDER_ID; ; i--) {
temp = clock / (1UL << i);
temp = clock >> i;
if (temp >= min || i == 0)
break;

2
drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
View file

@ -1177,7 +1177,7 @@ static int polaris10_populate_single_graphic_level(struct pp_hwmgr *hwmgr,
*/
PP_ASSERT_WITH_CODE((clock >= POLARIS10_MINIMUM_ENGINE_CLOCK), "Engine clock can't satisfy stutter requirement!", return 0);
for (i = POLARIS10_MAX_DEEPSLEEP_DIVIDER_ID; ; i--) {
temp = clock / (1UL << i);
temp = clock >> i;
if (temp >= POLARIS10_MINIMUM_ENGINE_CLOCK || i == 0)
break;

2
drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
View file

@ -2426,7 +2426,7 @@ static uint8_t tonga_get_sleep_divider_id_from_clock(struct pp_hwmgr *hwmgr,
"Engine clock can't satisfy stutter requirement!", return 0);
for (i = TONGA_MAX_DEEPSLEEP_DIVIDER_ID;; i--) {
temp = engine_clock / (1 << i);
temp = engine_clock >> i;
if(temp >= min || i == 0)
break;