drm/amd/display: Revert "init dispclk from bootup clock for DCN314"

[Why&How]
This reverts commit f082daf08f2f.
Due to the change, the display shows garbage on startup.

We have an alternative solution for the original issue:
d24203bb629f ("drm/amd/display: Re-check seamless boot can be enabled or not")

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Wang, Sung-huai <Danny.Wang@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 4 insertions, 134 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
index db687a13174d..0cb37827a62b 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c
@@ -77,7 +77,6 @@ static const struct IP_BASE CLK_BASE = { { { { 0x00016C00, 0x02401800, 0, 0, 0,
 #undef DC_LOGGER
 #define DC_LOGGER \
 	clk_mgr->base.base.ctx->logger
-
 #define regCLK1_CLK_PLL_REQ			0x0237
 #define regCLK1_CLK_PLL_REQ_BASE_IDX		0
 
@@ -88,70 +87,8 @@ static const struct IP_BASE CLK_BASE = { { { { 0x00016C00, 0x02401800, 0, 0, 0,
 #define CLK1_CLK_PLL_REQ__PllSpineDiv_MASK	0x0000F000L
 #define CLK1_CLK_PLL_REQ__FbMult_frac_MASK	0xFFFF0000L
 
-#define regCLK1_CLK0_DFS_CNTL				0x0269
-#define regCLK1_CLK0_DFS_CNTL_BASE_IDX		0
-#define regCLK1_CLK1_DFS_CNTL				0x026c
-#define regCLK1_CLK1_DFS_CNTL_BASE_IDX		0
-#define regCLK1_CLK2_DFS_CNTL				0x026f
-#define regCLK1_CLK2_DFS_CNTL_BASE_IDX		0
-#define regCLK1_CLK3_DFS_CNTL				0x0272
-#define regCLK1_CLK3_DFS_CNTL_BASE_IDX		0
-#define regCLK1_CLK4_DFS_CNTL				0x0275
-#define regCLK1_CLK4_DFS_CNTL_BASE_IDX		0
-#define regCLK1_CLK5_DFS_CNTL				0x0278
-#define regCLK1_CLK5_DFS_CNTL_BASE_IDX		0
-
-#define regCLK1_CLK0_CURRENT_CNT			0x02fb
-#define regCLK1_CLK0_CURRENT_CNT_BASE_IDX	0
-#define regCLK1_CLK1_CURRENT_CNT			0x02fc
-#define regCLK1_CLK1_CURRENT_CNT_BASE_IDX	0
-#define regCLK1_CLK2_CURRENT_CNT			0x02fd
-#define regCLK1_CLK2_CURRENT_CNT_BASE_IDX	0
-#define regCLK1_CLK3_CURRENT_CNT			0x02fe
-#define regCLK1_CLK3_CURRENT_CNT_BASE_IDX	0
-#define regCLK1_CLK4_CURRENT_CNT			0x02ff
-#define regCLK1_CLK4_CURRENT_CNT_BASE_IDX	0
-#define regCLK1_CLK5_CURRENT_CNT			0x0300
-#define regCLK1_CLK5_CURRENT_CNT_BASE_IDX	0
-
-#define regCLK1_CLK0_BYPASS_CNTL			0x028a
-#define regCLK1_CLK0_BYPASS_CNTL_BASE_IDX	0
-#define regCLK1_CLK1_BYPASS_CNTL			0x0293
-#define regCLK1_CLK1_BYPASS_CNTL_BASE_IDX	0
 #define regCLK1_CLK2_BYPASS_CNTL			0x029c
 #define regCLK1_CLK2_BYPASS_CNTL_BASE_IDX	0
-#define regCLK1_CLK3_BYPASS_CNTL			0x02a5
-#define regCLK1_CLK3_BYPASS_CNTL_BASE_IDX	0
-#define regCLK1_CLK4_BYPASS_CNTL			0x02ae
-#define regCLK1_CLK4_BYPASS_CNTL_BASE_IDX	0
-#define regCLK1_CLK5_BYPASS_CNTL			0x02b7
-#define regCLK1_CLK5_BYPASS_CNTL_BASE_IDX	0
-
-#define regCLK1_CLK0_DS_CNTL				0x0283
-#define regCLK1_CLK0_DS_CNTL_BASE_IDX		0
-#define regCLK1_CLK1_DS_CNTL				0x028c
-#define regCLK1_CLK1_DS_CNTL_BASE_IDX		0
-#define regCLK1_CLK2_DS_CNTL				0x0295
-#define regCLK1_CLK2_DS_CNTL_BASE_IDX		0
-#define regCLK1_CLK3_DS_CNTL				0x029e
-#define regCLK1_CLK3_DS_CNTL_BASE_IDX		0
-#define regCLK1_CLK4_DS_CNTL				0x02a7
-#define regCLK1_CLK4_DS_CNTL_BASE_IDX		0
-#define regCLK1_CLK5_DS_CNTL				0x02b0
-#define regCLK1_CLK5_DS_CNTL_BASE_IDX		0
-
-#define regCLK1_CLK0_ALLOW_DS				0x0284
-#define regCLK1_CLK0_ALLOW_DS_BASE_IDX		0
-#define regCLK1_CLK1_ALLOW_DS				0x028d
-#define regCLK1_CLK1_ALLOW_DS_BASE_IDX		0
-#define regCLK1_CLK2_ALLOW_DS				0x0296
-#define regCLK1_CLK2_ALLOW_DS_BASE_IDX		0
-#define regCLK1_CLK3_ALLOW_DS				0x029f
-#define regCLK1_CLK3_ALLOW_DS_BASE_IDX		0
-#define regCLK1_CLK4_ALLOW_DS				0x02a8
-#define regCLK1_CLK4_ALLOW_DS_BASE_IDX		0
-#define regCLK1_CLK5_ALLOW_DS				0x02b1
-#define regCLK1_CLK5_ALLOW_DS_BASE_IDX		0
 
 #define CLK1_CLK2_BYPASS_CNTL__CLK2_BYPASS_SEL__SHIFT	0x0
 #define CLK1_CLK2_BYPASS_CNTL__CLK2_BYPASS_DIV__SHIFT	0x10
@@ -248,8 +185,6 @@ void dcn314_init_clocks(struct clk_mgr *clk_mgr)
 {
 	struct clk_mgr_internal *clk_mgr_int = TO_CLK_MGR_INTERNAL(clk_mgr);
 	uint32_t ref_dtbclk = clk_mgr->clks.ref_dtbclk_khz;
-	struct clk_mgr_dcn314 *clk_mgr_dcn314 = TO_CLK_MGR_DCN314(clk_mgr_int);
-	struct clk_log_info log_info = {0};
 
 	memset(&(clk_mgr->clks), 0, sizeof(struct dc_clocks));
 	// Assumption is that boot state always supports pstate
@@ -265,9 +200,6 @@ void dcn314_init_clocks(struct clk_mgr *clk_mgr)
 			dce_adjust_dp_ref_freq_for_ss(clk_mgr_int, clk_mgr->dprefclk_khz);
 	else
 		clk_mgr->dp_dto_source_clock_in_khz = clk_mgr->dprefclk_khz;
-
-	dcn314_dump_clk_registers(&clk_mgr->boot_snapshot, &clk_mgr_dcn314->base.base, &log_info);
-	clk_mgr->clks.dispclk_khz =  clk_mgr->boot_snapshot.dispclk * 1000;
 }
 
 void dcn314_update_clocks(struct clk_mgr *clk_mgr_base,
@@ -278,7 +210,7 @@ void dcn314_update_clocks(struct clk_mgr *clk_mgr_base,
 	struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
 	struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
 	struct dc *dc = clk_mgr_base->ctx->dc;
-	int display_count;
+	int display_count = 0;
 	bool update_dppclk = false;
 	bool update_dispclk = false;
 	bool dpp_clock_lowered = false;
@@ -287,7 +219,6 @@ void dcn314_update_clocks(struct clk_mgr *clk_mgr_base,
 		return;
 
 	display_count = dcn314_get_active_display_cnt_wa(dc, context);
-
 	/*
 	 * if it is safe to lower, but we are already in the lower state, we don't have to do anything
 	 * also if safe to lower is false, we just go in the higher state
@@ -363,7 +294,7 @@ 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) &&
-	    (new_clocks->dispclk_khz > 0 || (safe_to_lower && display_count == 0))) {
+		(new_clocks->dispclk_khz > 0 || (safe_to_lower && display_count == 0))) {
 		int requested_dispclk_khz = new_clocks->dispclk_khz;
 
 		dcn314_disable_otg_wa(clk_mgr_base, context, safe_to_lower, true);
@@ -374,7 +305,6 @@ void dcn314_update_clocks(struct clk_mgr *clk_mgr_base,
 
 		dcn314_smu_set_dispclk(clk_mgr, requested_dispclk_khz);
 		clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
-
 		dcn314_disable_otg_wa(clk_mgr_base, context, safe_to_lower, false);
 
 		update_dispclk = true;
@@ -462,65 +392,10 @@ bool dcn314_are_clock_states_equal(struct dc_clocks *a,
 	return true;
 }
 
-
-static void dcn314_dump_clk_registers_internal(struct dcn35_clk_internal *internal, struct clk_mgr *clk_mgr_base)
-{
-	struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
-
-	// read dtbclk
-	internal->CLK1_CLK4_CURRENT_CNT = REG_READ(CLK1_CLK4_CURRENT_CNT);
-	internal->CLK1_CLK4_BYPASS_CNTL = REG_READ(CLK1_CLK4_BYPASS_CNTL);
-
-	// read dcfclk
-	internal->CLK1_CLK3_CURRENT_CNT = REG_READ(CLK1_CLK3_CURRENT_CNT);
-	internal->CLK1_CLK3_BYPASS_CNTL = REG_READ(CLK1_CLK3_BYPASS_CNTL);
-
-	// read dcf deep sleep divider
-	internal->CLK1_CLK3_DS_CNTL = REG_READ(CLK1_CLK3_DS_CNTL);
-	internal->CLK1_CLK3_ALLOW_DS = REG_READ(CLK1_CLK3_ALLOW_DS);
-
-	// read dppclk
-	internal->CLK1_CLK1_CURRENT_CNT = REG_READ(CLK1_CLK1_CURRENT_CNT);
-	internal->CLK1_CLK1_BYPASS_CNTL = REG_READ(CLK1_CLK1_BYPASS_CNTL);
-
-	// read dprefclk
-	internal->CLK1_CLK2_CURRENT_CNT = REG_READ(CLK1_CLK2_CURRENT_CNT);
-	internal->CLK1_CLK2_BYPASS_CNTL = REG_READ(CLK1_CLK2_BYPASS_CNTL);
-
-	// read dispclk
-	internal->CLK1_CLK0_CURRENT_CNT = REG_READ(CLK1_CLK0_CURRENT_CNT);
-	internal->CLK1_CLK0_BYPASS_CNTL = REG_READ(CLK1_CLK0_BYPASS_CNTL);
-}
-
-void dcn314_dump_clk_registers(struct clk_state_registers_and_bypass *regs_and_bypass,
+static void dcn314_dump_clk_registers(struct clk_state_registers_and_bypass *regs_and_bypass,
 		struct clk_mgr *clk_mgr_base, struct clk_log_info *log_info)
 {
-
-	struct dcn35_clk_internal internal = {0};
-
-	dcn314_dump_clk_registers_internal(&internal, clk_mgr_base);
-
-	regs_and_bypass->dcfclk = internal.CLK1_CLK3_CURRENT_CNT / 10;
-	regs_and_bypass->dcf_deep_sleep_divider = internal.CLK1_CLK3_DS_CNTL / 10;
-	regs_and_bypass->dcf_deep_sleep_allow = internal.CLK1_CLK3_ALLOW_DS;
-	regs_and_bypass->dprefclk = internal.CLK1_CLK2_CURRENT_CNT / 10;
-	regs_and_bypass->dispclk = internal.CLK1_CLK0_CURRENT_CNT / 10;
-	regs_and_bypass->dppclk = internal.CLK1_CLK1_CURRENT_CNT / 10;
-	regs_and_bypass->dtbclk = internal.CLK1_CLK4_CURRENT_CNT / 10;
-
-	regs_and_bypass->dppclk_bypass = internal.CLK1_CLK1_BYPASS_CNTL & 0x0007;
-	if (regs_and_bypass->dppclk_bypass > 4)
-		regs_and_bypass->dppclk_bypass = 0;
-	regs_and_bypass->dcfclk_bypass = internal.CLK1_CLK3_BYPASS_CNTL & 0x0007;
-	if (regs_and_bypass->dcfclk_bypass > 4)
-		regs_and_bypass->dcfclk_bypass = 0;
-	regs_and_bypass->dispclk_bypass = internal.CLK1_CLK0_BYPASS_CNTL & 0x0007;
-	if (regs_and_bypass->dispclk_bypass > 4)
-		regs_and_bypass->dispclk_bypass = 0;
-	regs_and_bypass->dprefclk_bypass = internal.CLK1_CLK2_BYPASS_CNTL & 0x0007;
-	if (regs_and_bypass->dprefclk_bypass > 4)
-		regs_and_bypass->dprefclk_bypass = 0;
-
+	return;
 }
 
 static struct clk_bw_params dcn314_bw_params = {
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.h b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.h
index 0577eb527bc3..002c28e80720 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.h
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.h
@@ -65,9 +65,4 @@ void dcn314_clk_mgr_construct(struct dc_context *ctx,
 
 void dcn314_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr_int);
 
-
-void dcn314_dump_clk_registers(struct clk_state_registers_and_bypass *regs_and_bypass,
-		struct clk_mgr *clk_mgr_base, struct clk_log_info *log_info);
-
-
 #endif //__DCN314_CLK_MGR_H__