Commit 896b3cb3 authored by Charlene Liu's avatar Charlene Liu Committed by Alex Deucher
Browse files

drm/amd/display: fix 12bpc truncate to 10bpc 



Signed-off-by: default avatarCharlene Liu <charlene.liu@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 87b58768

drivers/gpu/drm/amd/display/dc/dce/dce_opp.c

+9 −9
Original line number Diff line number Diff line
@@ -710,32 +710,32 @@ void dce110_opp_set_dyn_expansion( 
	enum signal_type signal)

{

	struct dce110_opp *opp110 = TO_DCE110_OPP(opp);

	bool enable_dyn_exp = false;



	REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,

			FMT_DYNAMIC_EXP_EN, 0,

			FMT_DYNAMIC_EXP_MODE, 0);

	/* From HW programming guide:

		FMT_DYNAMIC_EXP_EN = 0 for limited RGB or YCbCr output

		FMT_DYNAMIC_EXP_EN = 1 for RGB full range only*/

	if (color_sp == COLOR_SPACE_SRGB)

		enable_dyn_exp = true;



	/*00 - 10-bit -> 12-bit dynamic expansion*/

	/*01 - 8-bit  -> 12-bit dynamic expansion*/

	if (signal == SIGNAL_TYPE_HDMI_TYPE_A) {

	if (signal == SIGNAL_TYPE_HDMI_TYPE_A ||

		signal == SIGNAL_TYPE_DISPLAY_PORT ||

		signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {

		switch (color_dpth) {

		case COLOR_DEPTH_888:

			REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,

				FMT_DYNAMIC_EXP_EN, enable_dyn_exp ? 1:0,

				FMT_DYNAMIC_EXP_EN, 1,

				FMT_DYNAMIC_EXP_MODE, 1);

			break;

		case COLOR_DEPTH_101010:

			REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,

				FMT_DYNAMIC_EXP_EN, enable_dyn_exp ? 1:0,

				FMT_DYNAMIC_EXP_EN, 1,

				FMT_DYNAMIC_EXP_MODE, 0);

			break;

		case COLOR_DEPTH_121212:

			REG_UPDATE_2(

				FMT_DYNAMIC_EXP_CNTL,

				FMT_DYNAMIC_EXP_EN, 1,/*otherwise last two bits are zero*/

				FMT_DYNAMIC_EXP_MODE, 0);

			break;

		default:

			break;