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

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commit a6e1775da0 upstream.

[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: Jerry Zuo <Jerry.Zuo@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Tsung-hua Lin <Tsung-hua.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tsung-hua Lin
2022-11-09 12:54:22 +08:00
committed by Greg Kroah-Hartman
parent 5033cba00c
commit e7bf1fe538
1 changed files with 37 additions and 0 deletions
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37
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -1374,7 +1374,44 @@ 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)