[PATCH 04/19] drm/amd/display: Use DPP inst instead of pipe idx for DPP DTO programming

[Qingqing Zhuo]

From: Alvin Lee <alvin.l...@amd.com>

[Description]
- For pipe harvesting cases we must use DPP inst instead of
  pipe index for DPP related programming

Reviewed-by: Jun Lei <jun....@amd.com>
Acked-by: Qingqing Zhuo <qingqing.z...@amd.com>
Signed-off-by: Alvin Lee <alvin.l...@amd.com>
---
 .../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c  | 38 ++++++++++++++++++-
 .../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.h  |  3 ++
 2 files changed, 39 insertions(+), 2 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 e686d6610fd4..af108f88b112 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
@@ -255,6 +255,40 @@ static void dcn32_update_dppclk_dispclk_freq(struct 
clk_mgr_internal *clk_mgr, s
        }
 }
 
+void dcn32_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr,
+               struct dc_state *context, bool safe_to_lower)
+{
+       int i;
+
+       clk_mgr->dccg->ref_dppclk = clk_mgr->base.clks.dppclk_khz;
+       for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) {
+               int dpp_inst, dppclk_khz, prev_dppclk_khz;
+
+               dppclk_khz = 
context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz;
+
+               if (context->res_ctx.pipe_ctx[i].plane_res.dpp)
+                       dpp_inst = 
context->res_ctx.pipe_ctx[i].plane_res.dpp->inst;
+               else if (!context->res_ctx.pipe_ctx[i].plane_res.dpp && 
dppclk_khz == 0) {
+                       /* dpp == NULL && dppclk_khz == 0 is valid because of 
pipe harvesting.
+                        * In this case just continue in loop
+                        */
+                       continue;
+               } else if (!context->res_ctx.pipe_ctx[i].plane_res.dpp && 
dppclk_khz > 0) {
+                       /* The software state is not valid if dpp resource is 
NULL and
+                        * dppclk_khz > 0.
+                        */
+                       ASSERT(false);
+                       continue;
+               }
+
+               prev_dppclk_khz = clk_mgr->dccg->pipe_dppclk_khz[i];
+
+               if (safe_to_lower || prev_dppclk_khz < dppclk_khz)
+                       clk_mgr->dccg->funcs->update_dpp_dto(
+                                                       clk_mgr->dccg, 
dpp_inst, dppclk_khz);
+       }
+}
+
 static void dcn32_update_clocks_update_dentist(
                struct clk_mgr_internal *clk_mgr,
                struct dc_state *context)
@@ -524,7 +558,7 @@ static void dcn32_update_clocks(struct clk_mgr 
*clk_mgr_base,
        if (dc->config.forced_clocks == false || (force_reset && 
safe_to_lower)) {
                if (dpp_clock_lowered) {
                        /* if clock is being lowered, increase DTO before 
lowering refclk */
-                       dcn20_update_clocks_update_dpp_dto(clk_mgr, context, 
safe_to_lower);
+                       dcn32_update_clocks_update_dpp_dto(clk_mgr, context, 
safe_to_lower);
                        dcn32_update_clocks_update_dentist(clk_mgr, context);
                        if (clk_mgr->smu_present)
                                dcn32_smu_set_hard_min_by_freq(clk_mgr, 
PPCLK_DPPCLK, khz_to_mhz_ceil(clk_mgr_base->clks.dppclk_khz));
@@ -536,7 +570,7 @@ static void dcn32_update_clocks(struct clk_mgr 
*clk_mgr_base,
                         * that we do not lower dto when it is not safe to 
lower. We do not need to
                         * compare the current and new dppclk before calling 
this function.
                         */
-                       dcn20_update_clocks_update_dpp_dto(clk_mgr, context, 
safe_to_lower);
+                       dcn32_update_clocks_update_dpp_dto(clk_mgr, context, 
safe_to_lower);
                }
        }
 
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.h 
b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.h
index 57e09c7c95f5..186daada7b03 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.h
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.h
@@ -32,6 +32,9 @@ void dcn32_clk_mgr_construct(struct dc_context *ctx,
                struct pp_smu_funcs *pp_smu,
                struct dccg *dccg);
 
+void dcn32_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr,
+               struct dc_state *context, bool safe_to_lower);
+
 void dcn32_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr);
 
 
-- 
2.34.1