[PATCH] drm/amd/display: Add more checks for exiting idle in DC

From: Nicholas Kazlauskas
Date: Tue Jan 16 2024 - 09:52:58 EST

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[Why]
Any interface that touches registers needs to wake up the system.

[How]
Add a new interface dc_exit_ips_for_hw_access that wraps the check
for IPS support and insert it into the public DC interfaces that
touch registers.

We don't re-enter, since we expect that the enter/exit to have been done
on the DM side.

Cc: stable@xxxxxxxxxxxxxxx # 6.1+
Reviewed-by: Ovidiu Bunea <ovidiu.bunea@xxxxxxx>
Acked-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 42 +++++++++++++++++++
.../gpu/drm/amd/display/dc/core/dc_stream.c | 18 ++++++++
.../gpu/drm/amd/display/dc/core/dc_surface.c | 2 +
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
4 files changed, 63 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 2db361aeaf259..eb803d4d34786 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -417,6 +417,8 @@ bool dc_stream_adjust_vmin_vmax(struct dc *dc,
if (!memcmp(&stream->adjust, adjust, sizeof(*adjust)))
return true;

+ dc_exit_ips_for_hw_access(dc);
+
stream->adjust.v_total_max = adjust->v_total_max;
stream->adjust.v_total_mid = adjust->v_total_mid;
stream->adjust.v_total_mid_frame_num = adjust->v_total_mid_frame_num;
@@ -457,6 +459,8 @@ bool dc_stream_get_last_used_drr_vtotal(struct dc *dc,

int i = 0;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
struct pipe_ctx *pipe = &dc->current_state->res_ctx.pipe_ctx[i];

@@ -487,6 +491,8 @@ bool dc_stream_get_crtc_position(struct dc *dc,
bool ret = false;
struct crtc_position position;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
struct pipe_ctx *pipe =
&dc->current_state->res_ctx.pipe_ctx[i];
@@ -606,6 +612,8 @@ bool dc_stream_configure_crc(struct dc *dc, struct dc_stream_state *stream,
if (pipe == NULL)
return false;

+ dc_exit_ips_for_hw_access(dc);
+
/* By default, capture the full frame */
param.windowa_x_start = 0;
param.windowa_y_start = 0;
@@ -665,6 +673,8 @@ bool dc_stream_get_crc(struct dc *dc, struct dc_stream_state *stream,
struct pipe_ctx *pipe;
struct timing_generator *tg;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
pipe = &dc->current_state->res_ctx.pipe_ctx[i];
if (pipe->stream == stream)
@@ -689,6 +699,8 @@ void dc_stream_set_dyn_expansion(struct dc *dc, struct dc_stream_state *stream,
int i;
struct pipe_ctx *pipe_ctx;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
if (dc->current_state->res_ctx.pipe_ctx[i].stream
== stream) {
@@ -724,6 +736,8 @@ void dc_stream_set_dither_option(struct dc_stream_state *stream,
if (option > DITHER_OPTION_MAX)
return;

+ dc_exit_ips_for_hw_access(stream->ctx->dc);
+
stream->dither_option = option;

memset(&params, 0, sizeof(params));
@@ -748,6 +762,8 @@ bool dc_stream_set_gamut_remap(struct dc *dc, const struct dc_stream_state *stre
bool ret = false;
struct pipe_ctx *pipes;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
if (dc->current_state->res_ctx.pipe_ctx[i].stream == stream) {
pipes = &dc->current_state->res_ctx.pipe_ctx[i];
@@ -765,6 +781,8 @@ bool dc_stream_program_csc_matrix(struct dc *dc, struct dc_stream_state *stream)
bool ret = false;
struct pipe_ctx *pipes;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
if (dc->current_state->res_ctx.pipe_ctx[i].stream
== stream) {
@@ -791,6 +809,8 @@ void dc_stream_set_static_screen_params(struct dc *dc,
struct pipe_ctx *pipes_affected[MAX_PIPES];
int num_pipes_affected = 0;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < num_streams; i++) {
struct dc_stream_state *stream = streams[i];

@@ -1769,6 +1789,8 @@ void dc_enable_stereo(
int i, j;
struct pipe_ctx *pipe;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
if (context != NULL) {
pipe = &context->res_ctx.pipe_ctx[i];
@@ -1788,6 +1810,8 @@ void dc_enable_stereo(
void dc_trigger_sync(struct dc *dc, struct dc_state *context)
{
if (context->stream_count > 1 && !dc->debug.disable_timing_sync) {
+ dc_exit_ips_for_hw_access(dc);
+
enable_timing_multisync(dc, context);
program_timing_sync(dc, context);
}
@@ -2044,6 +2068,8 @@ enum dc_status dc_commit_streams(struct dc *dc,
if (!streams_changed(dc, streams, stream_count))
return res;

+ dc_exit_ips_for_hw_access(dc);
+
DC_LOG_DC("%s: %d streams\n", __func__, stream_count);

for (i = 0; i < stream_count; i++) {
@@ -3373,6 +3399,8 @@ static void commit_planes_for_stream_fast(struct dc *dc,
int i, j;
struct pipe_ctx *top_pipe_to_program = NULL;
struct dc_stream_status *stream_status = NULL;
+ dc_exit_ips_for_hw_access(dc);
+
dc_z10_restore(dc);

top_pipe_to_program = resource_get_otg_master_for_stream(
@@ -3527,6 +3555,8 @@ static void commit_planes_for_stream(struct dc *dc,
// dc->current_state anymore, so we have to cache it before we apply
// the new SubVP context
subvp_prev_use = false;
+ dc_exit_ips_for_hw_access(dc);
+
dc_z10_restore(dc);
if (update_type == UPDATE_TYPE_FULL)
wait_for_outstanding_hw_updates(dc, context);
@@ -4409,6 +4439,8 @@ bool dc_update_planes_and_stream(struct dc *dc,
bool is_plane_addition = 0;
bool is_fast_update_only;

+ dc_exit_ips_for_hw_access(dc);
+
populate_fast_updates(fast_update, srf_updates, surface_count, stream_update);
is_fast_update_only = fast_update_only(dc, fast_update, srf_updates,
surface_count, stream_update, stream);
@@ -4529,6 +4561,8 @@ void dc_commit_updates_for_stream(struct dc *dc,
int i, j;
struct dc_fast_update fast_update[MAX_SURFACES] = {0};

+ dc_exit_ips_for_hw_access(dc);
+
populate_fast_updates(fast_update, srf_updates, surface_count, stream_update);
stream_status = dc_stream_get_status(stream);
context = dc->current_state;
@@ -4713,6 +4747,8 @@ void dc_set_power_state(
case DC_ACPI_CM_POWER_STATE_D0:
dc_state_construct(dc, dc->current_state);

+ dc_exit_ips_for_hw_access(dc);
+
dc_z10_restore(dc);

dc->hwss.init_hw(dc);
@@ -4854,6 +4890,12 @@ void dc_allow_idle_optimizations(struct dc *dc, bool allow)
dc->idle_optimizations_allowed = allow;
}

+void dc_exit_ips_for_hw_access(struct dc *dc)
+{
+ if (dc->caps.ips_support)
+ dc_allow_idle_optimizations(dc, false);
+}
+
bool dc_dmub_is_ips_idle_state(struct dc *dc)
{
uint32_t idle_state = 0;
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 54670e0b15189..51a970fcb5d05 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -423,6 +423,8 @@ bool dc_stream_add_writeback(struct dc *dc,
return false;
}

+ dc_exit_ips_for_hw_access(dc);
+
wb_info->dwb_params.out_transfer_func = stream->out_transfer_func;

dwb = dc->res_pool->dwbc[wb_info->dwb_pipe_inst];
@@ -493,6 +495,8 @@ bool dc_stream_fc_disable_writeback(struct dc *dc,
return false;
}

+ dc_exit_ips_for_hw_access(dc);
+
if (dwb->funcs->set_fc_enable)
dwb->funcs->set_fc_enable(dwb, DWB_FRAME_CAPTURE_DISABLE);

@@ -542,6 +546,8 @@ bool dc_stream_remove_writeback(struct dc *dc,
return false;
}

+ dc_exit_ips_for_hw_access(dc);
+
/* disable writeback */
if (dc->hwss.disable_writeback) {
struct dwbc *dwb = dc->res_pool->dwbc[dwb_pipe_inst];
@@ -557,6 +563,8 @@ bool dc_stream_warmup_writeback(struct dc *dc,
int num_dwb,
struct dc_writeback_info *wb_info)
{
+ dc_exit_ips_for_hw_access(dc);
+
if (dc->hwss.mmhubbub_warmup)
return dc->hwss.mmhubbub_warmup(dc, num_dwb, wb_info);
else
@@ -569,6 +577,8 @@ uint32_t dc_stream_get_vblank_counter(const struct dc_stream_state *stream)
struct resource_context *res_ctx =
&dc->current_state->res_ctx;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
struct timing_generator *tg = res_ctx->pipe_ctx[i].stream_res.tg;

@@ -597,6 +607,8 @@ bool dc_stream_send_dp_sdp(const struct dc_stream_state *stream,
dc = stream->ctx->dc;
res_ctx = &dc->current_state->res_ctx;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i];

@@ -628,6 +640,8 @@ bool dc_stream_get_scanoutpos(const struct dc_stream_state *stream,
struct resource_context *res_ctx =
&dc->current_state->res_ctx;

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < MAX_PIPES; i++) {
struct timing_generator *tg = res_ctx->pipe_ctx[i].stream_res.tg;

@@ -664,6 +678,8 @@ bool dc_stream_dmdata_status_done(struct dc *dc, struct dc_stream_state *stream)
if (i == MAX_PIPES)
return true;

+ dc_exit_ips_for_hw_access(dc);
+
return dc->hwss.dmdata_status_done(pipe);
}

@@ -698,6 +714,8 @@ bool dc_stream_set_dynamic_metadata(struct dc *dc,

pipe_ctx->stream->dmdata_address = attr->address;

+ dc_exit_ips_for_hw_access(dc);
+
dc->hwss.program_dmdata_engine(pipe_ctx);

if (hubp->funcs->dmdata_set_attributes != NULL &&
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
index 19a2c7140ae84..19140fb65787c 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
@@ -161,6 +161,8 @@ const struct dc_plane_status *dc_plane_get_status(
break;
}

+ dc_exit_ips_for_hw_access(dc);
+
for (i = 0; i < dc->res_pool->pipe_count; i++) {
struct pipe_ctx *pipe_ctx =
&dc->current_state->res_ctx.pipe_ctx[i];
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 74c871917eafc..53919c0eb1e3d 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -2325,6 +2325,7 @@ bool dc_is_plane_eligible_for_idle_optimizations(struct dc *dc, struct dc_plane_
struct dc_cursor_attributes *cursor_attr);

void dc_allow_idle_optimizations(struct dc *dc, bool allow);
+void dc_exit_ips_for_hw_access(struct dc *dc);
bool dc_dmub_is_ips_idle_state(struct dc *dc);

/* set min and max memory clock to lowest and highest DPM level, respectively */
--
2.43.0

Next message: Ville Syrjälä: "[PATCH] Revert "drm/i915/dsi: Do display on sequence later on icl+""
Previous message: Laurent Pinchart: "[PATCH] media: nxp: imx8-isi: Mark all crossbar sink pads as MUST_CONNECT"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]