[PATCH 11/22] drm/amd/display: Remove MPC rate control logic from DCN30 and above
Tom Chung
chiahsuan.chung at amd.com
Wed Mar 20 06:35:45 UTC 2024
From: George Shen <george.shen at amd.com>
[Why]
MPC flow rate control is not needed for DCN30 and above. Current logic
that uses it can result in underflow for certain edge cases (such as
DSC N422 + ODM combine + 422 left edge pixel).
[How]
Remove MPC flow rate control logic and programming for DCN30 and above.
Cc: Mario Limonciello <mario.limonciello at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: stable at vger.kernel.org
Reviewed-by: Wenjing Liu <wenjing.liu at amd.com>
Acked-by: Tom Chung <chiahsuan.chung at amd.com>
Signed-off-by: George Shen <george.shen at amd.com>
---
.../gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c | 54 +++++++++++--------
.../gpu/drm/amd/display/dc/dcn30/dcn30_mpc.h | 14 ++---
.../gpu/drm/amd/display/dc/dcn32/dcn32_mpc.c | 5 +-
.../amd/display/dc/hwss/dcn314/dcn314_hwseq.c | 41 --------------
.../amd/display/dc/hwss/dcn32/dcn32_hwseq.c | 41 --------------
.../amd/display/dc/hwss/dcn35/dcn35_hwseq.c | 41 --------------
6 files changed, 41 insertions(+), 155 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c
index bf3386cd444d..5ebb57303130 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.c
@@ -44,6 +44,36 @@
#define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
+void mpc3_mpc_init(struct mpc *mpc)
+{
+ struct dcn30_mpc *mpc30 = TO_DCN30_MPC(mpc);
+ int opp_id;
+
+ mpc1_mpc_init(mpc);
+
+ for (opp_id = 0; opp_id < MAX_OPP; opp_id++) {
+ if (REG(MUX[opp_id]))
+ /* disable mpc out rate and flow control */
+ REG_UPDATE_2(MUX[opp_id], MPC_OUT_RATE_CONTROL_DISABLE,
+ 1, MPC_OUT_FLOW_CONTROL_COUNT, 0);
+ }
+}
+
+void mpc3_mpc_init_single_inst(struct mpc *mpc, unsigned int mpcc_id)
+{
+ struct dcn30_mpc *mpc30 = TO_DCN30_MPC(mpc);
+
+ mpc1_mpc_init_single_inst(mpc, mpcc_id);
+
+ /* assuming mpc out mux is connected to opp with the same index at this
+ * point in time (e.g. transitioning from vbios to driver)
+ */
+ if (mpcc_id < MAX_OPP && REG(MUX[mpcc_id]))
+ /* disable mpc out rate and flow control */
+ REG_UPDATE_2(MUX[mpcc_id], MPC_OUT_RATE_CONTROL_DISABLE,
+ 1, MPC_OUT_FLOW_CONTROL_COUNT, 0);
+}
+
bool mpc3_is_dwb_idle(
struct mpc *mpc,
int dwb_id)
@@ -80,25 +110,6 @@ void mpc3_disable_dwb_mux(
MPC_DWB0_MUX, 0xf);
}
-void mpc3_set_out_rate_control(
- struct mpc *mpc,
- int opp_id,
- bool enable,
- bool rate_2x_mode,
- struct mpc_dwb_flow_control *flow_control)
-{
- struct dcn30_mpc *mpc30 = TO_DCN30_MPC(mpc);
-
- REG_UPDATE_2(MUX[opp_id],
- MPC_OUT_RATE_CONTROL_DISABLE, !enable,
- MPC_OUT_RATE_CONTROL, rate_2x_mode);
-
- if (flow_control)
- REG_UPDATE_2(MUX[opp_id],
- MPC_OUT_FLOW_CONTROL_MODE, flow_control->flow_ctrl_mode,
- MPC_OUT_FLOW_CONTROL_COUNT, flow_control->flow_ctrl_cnt1);
-}
-
enum dc_lut_mode mpc3_get_ogam_current(struct mpc *mpc, int mpcc_id)
{
/*Contrary to DCN2 and DCN1 wherein a single status register field holds this info;
@@ -1490,8 +1501,8 @@ static const struct mpc_funcs dcn30_mpc_funcs = {
.read_mpcc_state = mpc3_read_mpcc_state,
.insert_plane = mpc1_insert_plane,
.remove_mpcc = mpc1_remove_mpcc,
- .mpc_init = mpc1_mpc_init,
- .mpc_init_single_inst = mpc1_mpc_init_single_inst,
+ .mpc_init = mpc3_mpc_init,
+ .mpc_init_single_inst = mpc3_mpc_init_single_inst,
.update_blending = mpc2_update_blending,
.cursor_lock = mpc1_cursor_lock,
.get_mpcc_for_dpp = mpc1_get_mpcc_for_dpp,
@@ -1508,7 +1519,6 @@ static const struct mpc_funcs dcn30_mpc_funcs = {
.set_dwb_mux = mpc3_set_dwb_mux,
.disable_dwb_mux = mpc3_disable_dwb_mux,
.is_dwb_idle = mpc3_is_dwb_idle,
- .set_out_rate_control = mpc3_set_out_rate_control,
.set_gamut_remap = mpc3_set_gamut_remap,
.program_shaper = mpc3_program_shaper,
.acquire_rmu = mpcc3_acquire_rmu,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.h b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.h
index 9cb96ae95a2f..ce93003dae01 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_mpc.h
@@ -1007,6 +1007,13 @@ void dcn30_mpc_construct(struct dcn30_mpc *mpc30,
int num_mpcc,
int num_rmu);
+void mpc3_mpc_init(
+ struct mpc *mpc);
+
+void mpc3_mpc_init_single_inst(
+ struct mpc *mpc,
+ unsigned int mpcc_id);
+
bool mpc3_program_shaper(
struct mpc *mpc,
const struct pwl_params *params,
@@ -1078,13 +1085,6 @@ bool mpc3_is_dwb_idle(
struct mpc *mpc,
int dwb_id);
-void mpc3_set_out_rate_control(
- struct mpc *mpc,
- int opp_id,
- bool enable,
- bool rate_2x_mode,
- struct mpc_dwb_flow_control *flow_control);
-
void mpc3_power_on_ogam_lut(
struct mpc *mpc, int mpcc_id,
bool power_on);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_mpc.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_mpc.c
index e789e654c387..e408e859b355 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_mpc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_mpc.c
@@ -47,7 +47,7 @@ void mpc32_mpc_init(struct mpc *mpc)
struct dcn30_mpc *mpc30 = TO_DCN30_MPC(mpc);
int mpcc_id;
- mpc1_mpc_init(mpc);
+ mpc3_mpc_init(mpc);
if (mpc->ctx->dc->debug.enable_mem_low_power.bits.mpc) {
if (mpc30->mpc_mask->MPCC_MCM_SHAPER_MEM_LOW_PWR_MODE && mpc30->mpc_mask->MPCC_MCM_3DLUT_MEM_LOW_PWR_MODE) {
@@ -991,7 +991,7 @@ static const struct mpc_funcs dcn32_mpc_funcs = {
.insert_plane = mpc1_insert_plane,
.remove_mpcc = mpc1_remove_mpcc,
.mpc_init = mpc32_mpc_init,
- .mpc_init_single_inst = mpc1_mpc_init_single_inst,
+ .mpc_init_single_inst = mpc3_mpc_init_single_inst,
.update_blending = mpc2_update_blending,
.cursor_lock = mpc1_cursor_lock,
.get_mpcc_for_dpp = mpc1_get_mpcc_for_dpp,
@@ -1008,7 +1008,6 @@ static const struct mpc_funcs dcn32_mpc_funcs = {
.set_dwb_mux = mpc3_set_dwb_mux,
.disable_dwb_mux = mpc3_disable_dwb_mux,
.is_dwb_idle = mpc3_is_dwb_idle,
- .set_out_rate_control = mpc3_set_out_rate_control,
.set_gamut_remap = mpc3_set_gamut_remap,
.program_shaper = mpc32_program_shaper,
.program_3dlut = mpc32_program_3dlut,
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
index 3a9cc8ac0c07..093f4387553c 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn314/dcn314_hwseq.c
@@ -69,29 +69,6 @@
#define FN(reg_name, field_name) \
hws->shifts->field_name, hws->masks->field_name
-static int calc_mpc_flow_ctrl_cnt(const struct dc_stream_state *stream,
- int opp_cnt)
-{
- bool hblank_halved = optc2_is_two_pixels_per_containter(&stream->timing);
- int flow_ctrl_cnt;
-
- if (opp_cnt >= 2)
- hblank_halved = true;
-
- flow_ctrl_cnt = stream->timing.h_total - stream->timing.h_addressable -
- stream->timing.h_border_left -
- stream->timing.h_border_right;
-
- if (hblank_halved)
- flow_ctrl_cnt /= 2;
-
- /* ODM combine 4:1 case */
- if (opp_cnt == 4)
- flow_ctrl_cnt /= 2;
-
- return flow_ctrl_cnt;
-}
-
static void update_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
{
struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
@@ -183,10 +160,6 @@ void dcn314_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx
struct pipe_ctx *odm_pipe;
int opp_cnt = 0;
int opp_inst[MAX_PIPES] = {0};
- bool rate_control_2x_pclk = (pipe_ctx->stream->timing.flags.INTERLACE || optc2_is_two_pixels_per_containter(&pipe_ctx->stream->timing));
- struct mpc_dwb_flow_control flow_control;
- struct mpc *mpc = dc->res_pool->mpc;
- int i;
opp_cnt = get_odm_config(pipe_ctx, opp_inst);
@@ -199,20 +172,6 @@ void dcn314_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx
pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
- rate_control_2x_pclk = rate_control_2x_pclk || opp_cnt > 1;
- flow_control.flow_ctrl_mode = 0;
- flow_control.flow_ctrl_cnt0 = 0x80;
- flow_control.flow_ctrl_cnt1 = calc_mpc_flow_ctrl_cnt(pipe_ctx->stream, opp_cnt);
- if (mpc->funcs->set_out_rate_control) {
- for (i = 0; i < opp_cnt; ++i) {
- mpc->funcs->set_out_rate_control(
- mpc, opp_inst[i],
- true,
- rate_control_2x_pclk,
- &flow_control);
- }
- }
-
for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) {
odm_pipe->stream_res.opp->funcs->opp_pipe_clock_control(
odm_pipe->stream_res.opp,
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
index 367dcaeaf186..62ff99463834 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
@@ -970,29 +970,6 @@ void dcn32_init_hw(struct dc *dc)
}
}
-static int calc_mpc_flow_ctrl_cnt(const struct dc_stream_state *stream,
- int opp_cnt)
-{
- bool hblank_halved = optc2_is_two_pixels_per_containter(&stream->timing);
- int flow_ctrl_cnt;
-
- if (opp_cnt >= 2)
- hblank_halved = true;
-
- flow_ctrl_cnt = stream->timing.h_total - stream->timing.h_addressable -
- stream->timing.h_border_left -
- stream->timing.h_border_right;
-
- if (hblank_halved)
- flow_ctrl_cnt /= 2;
-
- /* ODM combine 4:1 case */
- if (opp_cnt == 4)
- flow_ctrl_cnt /= 2;
-
- return flow_ctrl_cnt;
-}
-
static void update_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
{
struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
@@ -1107,10 +1084,6 @@ void dcn32_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx *
struct pipe_ctx *odm_pipe;
int opp_cnt = 0;
int opp_inst[MAX_PIPES] = {0};
- bool rate_control_2x_pclk = (pipe_ctx->stream->timing.flags.INTERLACE || optc2_is_two_pixels_per_containter(&pipe_ctx->stream->timing));
- struct mpc_dwb_flow_control flow_control;
- struct mpc *mpc = dc->res_pool->mpc;
- int i;
opp_cnt = get_odm_config(pipe_ctx, opp_inst);
@@ -1123,20 +1096,6 @@ void dcn32_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx *
pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
- rate_control_2x_pclk = rate_control_2x_pclk || opp_cnt > 1;
- flow_control.flow_ctrl_mode = 0;
- flow_control.flow_ctrl_cnt0 = 0x80;
- flow_control.flow_ctrl_cnt1 = calc_mpc_flow_ctrl_cnt(pipe_ctx->stream, opp_cnt);
- if (mpc->funcs->set_out_rate_control) {
- for (i = 0; i < opp_cnt; ++i) {
- mpc->funcs->set_out_rate_control(
- mpc, opp_inst[i],
- true,
- rate_control_2x_pclk,
- &flow_control);
- }
- }
-
for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) {
odm_pipe->stream_res.opp->funcs->opp_pipe_clock_control(
odm_pipe->stream_res.opp,
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
index ad88edebcdfe..cdc53384cb51 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
@@ -358,29 +358,6 @@ void dcn35_init_hw(struct dc *dc)
}
}
-static int calc_mpc_flow_ctrl_cnt(const struct dc_stream_state *stream,
- int opp_cnt)
-{
- bool hblank_halved = optc2_is_two_pixels_per_containter(&stream->timing);
- int flow_ctrl_cnt;
-
- if (opp_cnt >= 2)
- hblank_halved = true;
-
- flow_ctrl_cnt = stream->timing.h_total - stream->timing.h_addressable -
- stream->timing.h_border_left -
- stream->timing.h_border_right;
-
- if (hblank_halved)
- flow_ctrl_cnt /= 2;
-
- /* ODM combine 4:1 case */
- if (opp_cnt == 4)
- flow_ctrl_cnt /= 2;
-
- return flow_ctrl_cnt;
-}
-
static void update_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
{
struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc;
@@ -474,10 +451,6 @@ void dcn35_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx *
struct pipe_ctx *odm_pipe;
int opp_cnt = 0;
int opp_inst[MAX_PIPES] = {0};
- bool rate_control_2x_pclk = (pipe_ctx->stream->timing.flags.INTERLACE || optc2_is_two_pixels_per_containter(&pipe_ctx->stream->timing));
- struct mpc_dwb_flow_control flow_control;
- struct mpc *mpc = dc->res_pool->mpc;
- int i;
opp_cnt = get_odm_config(pipe_ctx, opp_inst);
@@ -490,20 +463,6 @@ void dcn35_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx *
pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
- rate_control_2x_pclk = rate_control_2x_pclk || opp_cnt > 1;
- flow_control.flow_ctrl_mode = 0;
- flow_control.flow_ctrl_cnt0 = 0x80;
- flow_control.flow_ctrl_cnt1 = calc_mpc_flow_ctrl_cnt(pipe_ctx->stream, opp_cnt);
- if (mpc->funcs->set_out_rate_control) {
- for (i = 0; i < opp_cnt; ++i) {
- mpc->funcs->set_out_rate_control(
- mpc, opp_inst[i],
- true,
- rate_control_2x_pclk,
- &flow_control);
- }
- }
-
for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) {
odm_pipe->stream_res.opp->funcs->opp_pipe_clock_control(
odm_pipe->stream_res.opp,
--
2.34.1
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