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-rw-r--r--drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c1
-rw-r--r--drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c9
-rw-r--r--drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c23
3 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
index 96fa68f166e0..6a811755e2e6 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
@@ -952,6 +952,7 @@ void dcn32_clk_mgr_construct(
clk_mgr->base.clks.ref_dtbclk_khz = 268750;
}
+
/* integer part is now VCO frequency in kHz */
clk_mgr->base.dentist_vco_freq_khz = dcn32_get_vco_frequency_from_reg(clk_mgr);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 20f668d28364..5934b1d70e48 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -2133,6 +2133,15 @@ void dcn20_optimize_bandwidth(
if (hubbub->funcs->program_compbuf_size)
hubbub->funcs->program_compbuf_size(hubbub, context->bw_ctx.bw.dcn.compbuf_size_kb, true);
+ if (context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching) {
+ dc_dmub_srv_p_state_delegate(dc,
+ true, context);
+ context->bw_ctx.bw.dcn.clk.p_state_change_support = true;
+ dc->clk_mgr->clks.fw_based_mclk_switching = true;
+ } else {
+ dc->clk_mgr->clks.fw_based_mclk_switching = false;
+ }
+
dc->clk_mgr->funcs->update_clocks(
dc->clk_mgr,
context,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
index b9753867d97b..b59e215027e2 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
@@ -951,11 +951,34 @@ void dcn30_set_disp_pattern_generator(const struct dc *dc,
void dcn30_prepare_bandwidth(struct dc *dc,
struct dc_state *context)
{
+ bool p_state_change_support = context->bw_ctx.bw.dcn.clk.p_state_change_support;
+ /* Any transition into an FPO config should disable MCLK switching first to avoid
+ * driver and FW P-State synchronization issues.
+ */
+ if (context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching || dc->clk_mgr->clks.fw_based_mclk_switching) {
+ dc->optimized_required = true;
+ context->bw_ctx.bw.dcn.clk.p_state_change_support = false;
+ }
+
if (dc->clk_mgr->dc_mode_softmax_enabled)
if (dc->clk_mgr->clks.dramclk_khz <= dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000 &&
context->bw_ctx.bw.dcn.clk.dramclk_khz > dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000)
dc->clk_mgr->funcs->set_max_memclk(dc->clk_mgr, dc->clk_mgr->bw_params->clk_table.entries[dc->clk_mgr->bw_params->clk_table.num_entries - 1].memclk_mhz);
dcn20_prepare_bandwidth(dc, context);
+ /*
+ * enabled -> enabled: do not disable
+ * enabled -> disabled: disable
+ * disabled -> enabled: don't care
+ * disabled -> disabled: don't care
+ */
+ if (!context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching)
+ dc_dmub_srv_p_state_delegate(dc, false, context);
+
+ if (context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching || dc->clk_mgr->clks.fw_based_mclk_switching) {
+ /* After disabling P-State, restore the original value to ensure we get the correct P-State
+ * on the next optimize. */
+ context->bw_ctx.bw.dcn.clk.p_state_change_support = p_state_change_support;
+ }
}