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drm/amd/display: Acquire FCLK DPM levels on DCN32

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[Why & How]
Acquire FCLK DPM levels to properly construct DML clock limits. Further
add new logic to keep number of indices for each clock in clk_mgr.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dillon Varone 2022-09-28 15:44:38 -04:00 committed by Alex Deucher
parent 876fcc4222
commit d6170e418d
2 changed files with 41 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
View File

@ -156,7 +156,7 @@ void dcn32_init_clocks(struct clk_mgr *clk_mgr_base)
{
struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
unsigned int num_levels;
unsigned int num_dcfclk_levels, num_dtbclk_levels, num_dispclk_levels;
struct clk_limit_num_entries *num_entries_per_clk = &clk_mgr_base->bw_params->clk_table.num_entries_per_clk;
memset(&(clk_mgr_base->clks), 0, sizeof(struct dc_clocks));
clk_mgr_base->clks.p_state_change_support = true;
@ -180,27 +180,28 @@ void dcn32_init_clocks(struct clk_mgr *clk_mgr_base)
/* DCFCLK */
dcn32_init_single_clock(clk_mgr, PPCLK_DCFCLK,
&clk_mgr_base->bw_params->clk_table.entries[0].dcfclk_mhz,
&num_levels);
num_dcfclk_levels = num_levels;
&num_entries_per_clk->num_dcfclk_levels);
/* SOCCLK */
dcn32_init_single_clock(clk_mgr, PPCLK_SOCCLK,
&clk_mgr_base->bw_params->clk_table.entries[0].socclk_mhz,
&num_levels);
&num_entries_per_clk->num_socclk_levels);
/* DTBCLK */
if (!clk_mgr->base.ctx->dc->debug.disable_dtb_ref_clk_switch)
dcn32_init_single_clock(clk_mgr, PPCLK_DTBCLK,
&clk_mgr_base->bw_params->clk_table.entries[0].dtbclk_mhz,
&num_levels);
num_dtbclk_levels = num_levels;
&num_entries_per_clk->num_dtbclk_levels);
/* DISPCLK */
dcn32_init_single_clock(clk_mgr, PPCLK_DISPCLK,
&clk_mgr_base->bw_params->clk_table.entries[0].dispclk_mhz,
&num_levels);
num_dispclk_levels = num_levels;
&num_entries_per_clk->num_dispclk_levels);
num_levels = num_entries_per_clk->num_dispclk_levels;
if (num_dcfclk_levels && num_dtbclk_levels && num_dispclk_levels)
if (num_entries_per_clk->num_dcfclk_levels &&
num_entries_per_clk->num_dtbclk_levels &&
num_entries_per_clk->num_dispclk_levels)
clk_mgr->dpm_present = true;
if (clk_mgr_base->ctx->dc->debug.min_disp_clk_khz) {
@ -383,7 +384,7 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base,
/* to disable P-State switching, set UCLK min = max */
if (!clk_mgr_base->clks.p_state_change_support)
dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz);
clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries_per_clk.num_memclk_levels - 1].memclk_mhz);
}
/* Always update saved value, even if new value not set due to P-State switching unsupported. Also check safe_to_lower for FCLK */
@ -634,7 +635,7 @@ static void dcn32_set_hard_min_memclk(struct clk_mgr *clk_mgr_base, bool current
khz_to_mhz_ceil(clk_mgr_base->clks.dramclk_khz));
else
dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz);
clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries_per_clk.num_memclk_levels - 1].memclk_mhz);
} else {
dcn32_smu_set_hard_min_by_freq(clk_mgr, PPCLK_UCLK,
clk_mgr_base->bw_params->clk_table.entries[0].memclk_mhz);
@ -650,22 +651,34 @@ static void dcn32_set_hard_max_memclk(struct clk_mgr *clk_mgr_base)
return;
dcn30_smu_set_hard_max_by_freq(clk_mgr, PPCLK_UCLK,
clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries - 1].memclk_mhz);
clk_mgr_base->bw_params->clk_table.entries[clk_mgr_base->bw_params->clk_table.num_entries_per_clk.num_memclk_levels - 1].memclk_mhz);
}
/* Get current memclk states, update bounding box */
static void dcn32_get_memclk_states_from_smu(struct clk_mgr *clk_mgr_base)
{
struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
struct clk_limit_num_entries *num_entries_per_clk = &clk_mgr_base->bw_params->clk_table.num_entries_per_clk;
unsigned int num_levels;
if (!clk_mgr->smu_present)
return;
/* Refresh memclk states */
/* Refresh memclk and fclk states */
dcn32_init_single_clock(clk_mgr, PPCLK_UCLK,
&clk_mgr_base->bw_params->clk_table.entries[0].memclk_mhz,
&num_levels);
&num_entries_per_clk->num_memclk_levels);
dcn32_init_single_clock(clk_mgr, PPCLK_FCLK,
&clk_mgr_base->bw_params->clk_table.entries[0].fclk_mhz,
&num_entries_per_clk->num_fclk_levels);
if (num_entries_per_clk->num_memclk_levels >= num_entries_per_clk->num_fclk_levels) {
num_levels = num_entries_per_clk->num_memclk_levels;
} else {
num_levels = num_entries_per_clk->num_fclk_levels;
}
clk_mgr_base->bw_params->clk_table.num_entries = num_levels ? num_levels : 1;
if (clk_mgr->dpm_present && !num_levels)

15
drivers/gpu/drm/amd/display/dc/inc/hw/clk_mgr.h
View File

@ -95,10 +95,23 @@ struct clk_limit_table_entry {
unsigned int wck_ratio;
};
struct clk_limit_num_entries {
unsigned int num_dcfclk_levels;
unsigned int num_fclk_levels;
unsigned int num_memclk_levels;
unsigned int num_socclk_levels;
unsigned int num_dtbclk_levels;
unsigned int num_dispclk_levels;
unsigned int num_dppclk_levels;
unsigned int num_phyclk_levels;
unsigned int num_phyclk_d18_levels;
};
/* This table is contiguous */
struct clk_limit_table {
struct clk_limit_table_entry entries[MAX_NUM_DPM_LVL];
unsigned int num_entries;
struct clk_limit_num_entries num_entries_per_clk;
unsigned int num_entries; /* highest populated dpm level for back compatibility */
};
struct wm_range_table_entry {