Commit 4a9fb91a authored by Dmitry Baryshkov's avatar Dmitry Baryshkov
Browse files

drm/msm/dpu: document INTF_EDP/INTF_DP difference 



Based on the discussions on the mailing list, document enum
dpu_intf_type and it's controversial fields: INTF_DP and INTF_EDP.

INTF_EDP is used for older eDP interface found on msm8x74/msm8x84
INTF_DP is used for both eDP and DP interfaces handled by the msm/dp
driver. The DPU driver does not make a difference between them.

Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/475555/
Link: https://lore.kernel.org/r/20220222062246.242577-2-dmitry.baryshkov@linaro.org


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
parent 1e7ac595

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_mdss.h

+8 −0
Original line number Diff line number Diff line
@@ -217,12 +217,20 @@ enum dpu_intf { 
	INTF_MAX

};



/*

 * Historically these values correspond to the values written to the

 * DISP_INTF_SEL register, which had to programmed manually. On newer MDP

 * generations this register is NOP, but we keep the values for historical

 * reasons.

 */

enum dpu_intf_type {

	INTF_NONE = 0x0,

	INTF_DSI = 0x1,

	INTF_HDMI = 0x3,

	INTF_LCDC = 0x5,

	/* old eDP found on 8x74 and 8x84 */

	INTF_EDP = 0x9,

	/* both DP and eDP,  handled by the new DP driver */

	INTF_DP = 0xa,

	INTF_TYPE_MAX,