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drm/amdgpu: Simplify calculation in *get_sleep_divider_id_from_clock

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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
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2
drivers/gpu/drm/amd/amdgpu/ci_dpm.c
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@@ -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;
}