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drm/amd/display: Implement dm_pp_get_clock_levels_by_type_with_latency 

This is required so we use the correct minimum clocks for Vega. Without
this pplib will never be able to enter the lowest clock states.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland 2018-05-18 17:07:06 -04:00 committed by Alex Deucher
parent dd41fb8547
commit bfdec23404
1 changed files with 44 additions and 2 deletions
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46
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c
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@ -234,6 +234,34 @@ static void pp_to_dc_clock_levels(
}
}
static void pp_to_dc_clock_levels_with_latency(
const struct pp_clock_levels_with_latency *pp_clks,
struct dm_pp_clock_levels_with_latency *clk_level_info,
enum dm_pp_clock_type dc_clk_type)
{
uint32_t i;
if (pp_clks->num_levels > DM_PP_MAX_CLOCK_LEVELS) {
DRM_INFO("DM_PPLIB: Warning: %s clock: number of levels %d exceeds maximum of %d!\n",
DC_DECODE_PP_CLOCK_TYPE(dc_clk_type),
pp_clks->num_levels,
DM_PP_MAX_CLOCK_LEVELS);
clk_level_info->num_levels = DM_PP_MAX_CLOCK_LEVELS;
} else
clk_level_info->num_levels = pp_clks->num_levels;
DRM_DEBUG("DM_PPLIB: values for %s clock\n",
DC_DECODE_PP_CLOCK_TYPE(dc_clk_type));
for (i = 0; i < clk_level_info->num_levels; i++) {
DRM_DEBUG("DM_PPLIB:\t %d\n", pp_clks->data[i].clocks_in_khz);
/* translate 10kHz to kHz */
clk_level_info->data[i].clocks_in_khz = pp_clks->data[i].clocks_in_khz;
clk_level_info->data[i].latency_in_us = pp_clks->data[i].clocks_in_khz;
}
}
bool dm_pp_get_clock_levels_by_type(
const struct dc_context *ctx,
enum dm_pp_clock_type clk_type,
@ -311,8 +339,22 @@ bool dm_pp_get_clock_levels_by_type_with_latency(
enum dm_pp_clock_type clk_type,
struct dm_pp_clock_levels_with_latency *clk_level_info)
{
/* TODO: to be implemented */
return false;
struct amdgpu_device *adev = ctx->driver_context;
void *pp_handle = adev->powerplay.pp_handle;
struct pp_clock_levels_with_latency pp_clks = { 0 };
const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
if (!pp_funcs->get_clock_by_type_with_latency)
return false;
if (pp_funcs->get_clock_by_type_with_latency(pp_handle,
dc_to_pp_clock_type(clk_type),
&pp_clks))
return false;
pp_to_dc_clock_levels_with_latency(&pp_clks, clk_level_info, clk_type);
return true;
}
bool dm_pp_get_clock_levels_by_type_with_voltage(