[PATCH 17/43] drm/amd/display: Use DTBCLK for valid pixel clock

[Alex Deucher]

From: Eric Bernstein <eric.bernstein at amd.com>

Use DTBCLK for valid pixel clock generation

Signed-off-by: Eric Bernstein <eric.bernstein at amd.com>
Acked-by: Jerry Zuo <jerry.zuo at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 .../gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c   | 15 +++++++++------
 drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h    | 17 +++++++++++++++++
 2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c
index 12633561be3f..a3e0b95fdc84 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c
@@ -42,12 +42,6 @@
 #define DC_LOGGER \
 	dccg->ctx->logger
 
-enum pixel_rate_div {
-	PIXEL_RATE_DIV_BY_1 = 0,
-	PIXEL_RATE_DIV_BY_2 = 1,
-	PIXEL_RATE_DIV_BY_4 = 3
-};
-
 static void dccg32_set_pixel_rate_div(
 		struct dccg *dccg,
 		uint32_t otg_inst,
@@ -190,6 +184,14 @@ void dccg32_set_dtbclk_dto(
 	}
 }
 
+void dccg32_set_valid_pixel_rate(
+		struct dccg *dccg,
+		int otg_inst,
+		int pixclk_khz)
+{
+	dccg32_set_dtbclk_dto(dccg, otg_inst, pixclk_khz, 0, NULL);
+}
+
 static void dccg32_get_dccg_ref_freq(struct dccg *dccg,
 		unsigned int xtalin_freq_inKhz,
 		unsigned int *dccg_ref_freq_inKhz)
@@ -267,6 +269,7 @@ static const struct dccg_funcs dccg32_funcs = {
 	.disable_symclk32_le = dccg31_disable_symclk32_le,
 	.set_physymclk = dccg31_set_physymclk,
 	.set_dtbclk_dto = dccg32_set_dtbclk_dto,
+	.set_valid_pixel_rate = dccg32_set_valid_pixel_rate,
 	.set_fifo_errdet_ovr_en = dccg2_set_fifo_errdet_ovr_en,
 	.set_audio_dtbclk_dto = dccg31_set_audio_dtbclk_dto,
 	.otg_add_pixel = dccg32_otg_add_pixel,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h
index 5cc6d1fb887d..2fbd65d88b61 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h
@@ -56,6 +56,12 @@ enum dentist_dispclk_change_mode {
 	DISPCLK_CHANGE_MODE_RAMPING,
 };
 
+enum pixel_rate_div {
+   PIXEL_RATE_DIV_BY_1 = 0,
+   PIXEL_RATE_DIV_BY_2 = 1,
+   PIXEL_RATE_DIV_BY_4 = 3
+};
+
 struct dccg {
 	struct dc_context *ctx;
 	const struct dccg_funcs *funcs;
@@ -133,6 +139,17 @@ struct dccg_funcs {
 		struct dccg *dccg,
 		int inst);
 
+void (*set_pixel_rate_div)(
+        struct dccg *dccg,
+        uint32_t otg_inst,
+        enum pixel_rate_div k1,
+        enum pixel_rate_div k2);
+
+void (*set_valid_pixel_rate)(
+        struct dccg *dccg,
+        int otg_inst,
+        int pixclk_khz);
+
 };
 
 #endif //__DAL_DCCG_H__
-- 
2.35.3