iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/amd/display: Add dtbclk access to dcn315

Browse Source 
[ Upstream commit a01b64f31d65bdc917d1afb4cec9915beb6931be ]

[Why & How]

Currently DCN315 clk manager is missing code to enable/disable dtbclk.
Because of this, "optimized_required" flag is constantly set
and this prevents FreeSync from engaging for certain high bandwidth
display Modes which require DTBCLK.

Reviewed-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Swapnil Patel <swapnil.patel@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Swapnil Patel 2024-04-02 21:07:46 -04:00 committed by Greg Kroah-Hartman
parent 422f3259ac
commit e0760e3847
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c
View File

@ -145,6 +145,10 @@ static void dcn315_update_clocks(struct clk_mgr *clk_mgr_base,
*/
clk_mgr_base->clks.zstate_support = new_clocks->zstate_support;
if (safe_to_lower) {
if (clk_mgr_base->clks.dtbclk_en && !new_clocks->dtbclk_en) {
dcn315_smu_set_dtbclk(clk_mgr, false);
clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en;
}
/* check that we're not already in lower */
if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_LOW_POWER) {
display_count = dcn315_get_active_display_cnt_wa(dc, context);
@ -160,6 +164,10 @@ static void dcn315_update_clocks(struct clk_mgr *clk_mgr_base,
}
}
} else {
if (!clk_mgr_base->clks.dtbclk_en && new_clocks->dtbclk_en) {
dcn315_smu_set_dtbclk(clk_mgr, true);
clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en;
}
/* check that we're not already in D0 */
if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_MISSION_MODE) {
union display_idle_optimization_u idle_info = { 0 };