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drm/amd/display: Port DENTIST hang and TDR fixes to OTG disable W/A

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commit 4b56f7d47b upstream.

[Why]
We can experience DENTIST hangs during optimize_bandwidth or TDRs if
FIFO is toggled and hangs.

[How]
Port the DCN35 fixes to DCN314.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nicholas Kazlauskas 2023-12-15 11:01:42 -05:00 committed by Greg Kroah-Hartman
parent 22ae604aea
commit fbc4ee5ca7
1 changed files with 9 additions and 12 deletions
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21
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
View File

@ -131,30 +131,27 @@ static int dcn314_get_active_display_cnt_wa(
return display_count;
}
static void dcn314_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *context, bool disable)
static void dcn314_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *context,
bool safe_to_lower, bool disable)
{
struct dc *dc = clk_mgr_base->ctx->dc;
int i;
for (i = 0; i < dc->res_pool->pipe_count; ++i) {
struct pipe_ctx *pipe = &dc->current_state->res_ctx.pipe_ctx[i];
struct pipe_ctx *pipe = safe_to_lower
? &context->res_ctx.pipe_ctx[i]
: &dc->current_state->res_ctx.pipe_ctx[i];
if (pipe->top_pipe || pipe->prev_odm_pipe)
continue;
if (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal))) {
struct stream_encoder *stream_enc = pipe->stream_res.stream_enc;
if (disable) {
if (stream_enc && stream_enc->funcs->disable_fifo)
pipe->stream_res.stream_enc->funcs->disable_fifo(stream_enc);
if (pipe->stream_res.tg && pipe->stream_res.tg->funcs->immediate_disable_crtc)
pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);
pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);
reset_sync_context_for_pipe(dc, context, i);
} else {
pipe->stream_res.tg->funcs->enable_crtc(pipe->stream_res.tg);
if (stream_enc && stream_enc->funcs->enable_fifo)
pipe->stream_res.stream_enc->funcs->enable_fifo(stream_enc);
}
}
}
@ -252,11 +249,11 @@ void dcn314_update_clocks(struct clk_mgr *clk_mgr_base,
}
if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) {
dcn314_disable_otg_wa(clk_mgr_base, context, true);
dcn314_disable_otg_wa(clk_mgr_base, context, safe_to_lower, true);
clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
dcn314_smu_set_dispclk(clk_mgr, clk_mgr_base->clks.dispclk_khz);
dcn314_disable_otg_wa(clk_mgr_base, context, false);
dcn314_disable_otg_wa(clk_mgr_base, context, safe_to_lower, false);
update_dispclk = true;
}