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drm/amdgpu: add mclk OD(overdrive) support for CI 

The maximum OD percentage is 20.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2016-05-24 15:43:53 -04:00 committed by Alex Deucher
parent f2bdc05f77
commit 40899d5529
1 changed files with 36 additions and 0 deletions
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36
drivers/gpu/drm/amd/amdgpu/ci_dpm.c
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@ -6564,6 +6564,40 @@ static int ci_dpm_set_sclk_od(struct amdgpu_device *adev, uint32_t value)
return 0; return 0;
} }
static int ci_dpm_get_mclk_od(struct amdgpu_device *adev)
{
struct ci_power_info *pi = ci_get_pi(adev);
struct ci_single_dpm_table *mclk_table = &(pi->dpm_table.mclk_table);
struct ci_single_dpm_table *golden_mclk_table =
&(pi->golden_dpm_table.mclk_table);
int value;
value = (mclk_table->dpm_levels[mclk_table->count - 1].value -
golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value) *
100 /
golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value;
return value;
}
static int ci_dpm_set_mclk_od(struct amdgpu_device *adev, uint32_t value)
{
struct ci_power_info *pi = ci_get_pi(adev);
struct ci_ps *ps = ci_get_ps(adev->pm.dpm.requested_ps);
struct ci_single_dpm_table *golden_mclk_table =
&(pi->golden_dpm_table.mclk_table);
if (value > 20)
value = 20;
ps->performance_levels[ps->performance_level_count - 1].mclk =
golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value *
value / 100 +
golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value;
return 0;
}
const struct amd_ip_funcs ci_dpm_ip_funcs = { const struct amd_ip_funcs ci_dpm_ip_funcs = {
.name = "ci_dpm", .name = "ci_dpm",
.early_init = ci_dpm_early_init, .early_init = ci_dpm_early_init,
@ -6602,6 +6636,8 @@ static const struct amdgpu_dpm_funcs ci_dpm_funcs = {
.force_clock_level = ci_dpm_force_clock_level, .force_clock_level = ci_dpm_force_clock_level,
.get_sclk_od = ci_dpm_get_sclk_od, .get_sclk_od = ci_dpm_get_sclk_od,
.set_sclk_od = ci_dpm_set_sclk_od, .set_sclk_od = ci_dpm_set_sclk_od,
.get_mclk_od = ci_dpm_get_mclk_od,
.set_mclk_od = ci_dpm_set_mclk_od,
}; };
static void ci_dpm_set_dpm_funcs(struct amdgpu_device *adev) static void ci_dpm_set_dpm_funcs(struct amdgpu_device *adev)