1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 61141981880d..68932ba7b8a4 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -85,6 +85,19 @@ static inline struct radeon_i2c_bus_rec radeon_lookup_i2c_gpio(struct radeon_dev
                 for (i = 0; i < num_indices; i++) {
                         gpio = &i2c_info->asGPIO_Info[i];
 
+                        /* some evergreen boards have bad data for this entry */
+                        if (ASIC_IS_DCE4(rdev)) {
+                                if ((i == 7) &&
+                                    (gpio->usClkMaskRegisterIndex == 0x1936) &&
+                                    (gpio->sucI2cId.ucAccess == 0)) {
+                                        gpio->sucI2cId.ucAccess = 0x97;
+                                        gpio->ucDataMaskShift = 8;
+                                        gpio->ucDataEnShift = 8;
+                                        gpio->ucDataY_Shift = 8;
+                                        gpio->ucDataA_Shift = 8;
+                                }
+                        }
+
                         if (gpio->sucI2cId.ucAccess == id) {
                                 i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex) * 4;
                                 i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex) * 4;
@@ -147,6 +160,20 @@ void radeon_atombios_i2c_init(struct radeon_device *rdev)
                 for (i = 0; i < num_indices; i++) {
                         gpio = &i2c_info->asGPIO_Info[i];
                         i2c.valid = false;
+
+                        /* some evergreen boards have bad data for this entry */
+                        if (ASIC_IS_DCE4(rdev)) {
+                                if ((i == 7) &&
+                                    (gpio->usClkMaskRegisterIndex == 0x1936) &&
+                                    (gpio->sucI2cId.ucAccess == 0)) {
+                                        gpio->sucI2cId.ucAccess = 0x97;
+                                        gpio->ucDataMaskShift = 8;
+                                        gpio->ucDataEnShift = 8;
+                                        gpio->ucDataY_Shift = 8;
+                                        gpio->ucDataA_Shift = 8;
+                                }
+                        }
+
                         i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex) * 4;
                         i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex) * 4;
                         i2c.en_clk_reg = le16_to_cpu(gpio->usClkEnRegisterIndex) * 4;
@@ -290,6 +317,15 @@ static bool radeon_atom_apply_quirks(struct drm_device *dev,
                         *connector_type = DRM_MODE_CONNECTOR_DVID;
         }
 
+        /* MSI K9A2GM V2/V3 board has no HDMI or DVI */
+        if ((dev->pdev->device == 0x796e) &&
+            (dev->pdev->subsystem_vendor == 0x1462) &&
+            (dev->pdev->subsystem_device == 0x7302)) {
+                if ((supported_device == ATOM_DEVICE_DFP2_SUPPORT) ||
+                    (supported_device == ATOM_DEVICE_DFP3_SUPPORT))
+                        return false;
+        }
+
         /* a-bit f-i90hd - ciaranm on #radeonhd - this board has no DVI */
         if ((dev->pdev->device == 0x7941) &&
             (dev->pdev->subsystem_vendor == 0x147b) &&