drm/radeon/kms: add additional quirk for Acer rv620 laptop

HPD pins are reversed

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=29387

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index dc9102fc7ed5..a416ab5c0c45 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -268,6 +268,7 @@ static bool radeon_atom_apply_quirks(struct drm_device *dev,
                                      uint16_t *line_mux,
                                      struct radeon_hpd *hpd)
 {
+        struct radeon_device *rdev = dev->dev_private;
 
         /* Asus M2A-VM HDMI board lists the DVI port as HDMI */
         if ((dev->pdev->device == 0x791e) &&
@@ -370,13 +371,22 @@ static bool radeon_atom_apply_quirks(struct drm_device *dev,
                 }
         }
 
-        /* Acer laptop reports DVI-D as DVI-I */
+        /* Acer laptop reports DVI-D as DVI-I and hpd pins reversed */
         if ((dev->pdev->device == 0x95c4) &&
             (dev->pdev->subsystem_vendor == 0x1025) &&
             (dev->pdev->subsystem_device == 0x013c)) {
+                struct radeon_gpio_rec gpio;
+
                 if ((*connector_type == DRM_MODE_CONNECTOR_DVII) &&
-                    (supported_device == ATOM_DEVICE_DFP1_SUPPORT))
+                    (supported_device == ATOM_DEVICE_DFP1_SUPPORT)) {
+                        gpio = radeon_lookup_gpio(rdev, 6);
+                        *hpd = radeon_atom_get_hpd_info_from_gpio(rdev, &gpio);
                         *connector_type = DRM_MODE_CONNECTOR_DVID;
+                } else if ((*connector_type == DRM_MODE_CONNECTOR_HDMIA) &&
+                           (supported_device == ATOM_DEVICE_DFP1_SUPPORT)) {
+                        gpio = radeon_lookup_gpio(rdev, 7);
+                        *hpd = radeon_atom_get_hpd_info_from_gpio(rdev, &gpio);
+                }
         }
 
         /* XFX Pine Group device rv730 reports no VGA DDC lines