Commit a6e1775d authored by Tsung-hua Lin's avatar Tsung-hua Lin Committed by Alex Deucher
Browse files

drm/amd/display: No display after resume from WB/CB 



[why]
First MST sideband message returns AUX_RET_ERROR_HPD_DISCON
on certain intel platform. Aux transaction considered failure
if HPD unexpected pulled low. The actual aux transaction success
in such case, hence do not return error.

[how]
Not returning error when AUX_RET_ERROR_HPD_DISCON detected
on the first sideband message.

v2: squash in fix (Alex)

Reviewed-by: default avatarJerry Zuo <Jerry.Zuo@amd.com>
Acked-by: default avatarBrian Chang <Brian.Chang@amd.com>
Signed-off-by: default avatarTsung-hua Lin <Tsung-hua.Lin@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 3cb93f39

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+37 −0
Original line number Diff line number Diff line
@@ -1372,7 +1372,44 @@ static const struct dmi_system_id hpd_disconnect_quirk_table[] = { 
			DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3460"),

		},

	},

	{

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),

			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Tower Plus 7010"),

		},

	},

	{

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),

			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Tower 7010"),

		},

	},

	{

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),

			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex SFF Plus 7010"),

		},

	},

	{

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),

			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex SFF 7010"),

		},

	},

	{

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),

			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Micro Plus 7010"),

		},

	},

	{

		.matches = {

			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),

			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Micro 7010"),

		},

	},

	{}

	/* TODO: refactor this from a fixed table to a dynamic option */

};



static void retrieve_dmi_info(struct amdgpu_display_manager *dm)