drm/radeon: fix DP audio support for APU with DCE4.1 display engine

[karo-tx-linux.git] / drivers / gpu / drm / radeon / radeon_atombios.c

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 9a9363a7e5b9af36eb3021c609e4d4fe2ad860a3..de9a2ffcf5f762539d6d4c92464ed5eff19e1c42 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1106,6 +1106,31 @@ union firmware_info {
        ATOM_FIRMWARE_INFO_V2_2 info_22;
 };
 
+union igp_info {
+       struct _ATOM_INTEGRATED_SYSTEM_INFO info;
+       struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
+       struct _ATOM_INTEGRATED_SYSTEM_INFO_V6 info_6;
+       struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_7 info_7;
+       struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_8 info_8;
+};
+
+static void radeon_atombios_get_dentist_vco_freq(struct radeon_device *rdev)
+{
+       struct radeon_mode_info *mode_info = &rdev->mode_info;
+       int index = GetIndexIntoMasterTable(DATA, IntegratedSystemInfo);
+       union igp_info *igp_info;
+       u8 frev, crev;
+       u16 data_offset;
+
+       if (atom_parse_data_header(mode_info->atom_context, index, NULL,
+                       &frev, &crev, &data_offset)) {
+               igp_info = (union igp_info *)(mode_info->atom_context->bios +
+                       data_offset);
+               rdev->clock.vco_freq =
+                       le32_to_cpu(igp_info->info_6.ulDentistVCOFreq);
+       }
+}
+
 bool radeon_atom_get_clock_info(struct drm_device *dev)
 {
        struct radeon_device *rdev = dev->dev_private;
@@ -1260,6 +1285,10 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
                if (ASIC_IS_DCE8(rdev))
                        rdev->clock.vco_freq =
                                le32_to_cpu(firmware_info->info_22.ulGPUPLL_OutputFreq);
+               else if (ASIC_IS_DCE5(rdev))
+                       rdev->clock.vco_freq = rdev->clock.current_dispclk;
+               else if (ASIC_IS_DCE41(rdev))
+                       radeon_atombios_get_dentist_vco_freq(rdev);
                else
                        rdev->clock.vco_freq = rdev->clock.current_dispclk;
 
@@ -1272,14 +1301,6 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
        return false;
 }
 
-union igp_info {
-       struct _ATOM_INTEGRATED_SYSTEM_INFO info;
-       struct _ATOM_INTEGRATED_SYSTEM_INFO_V2 info_2;
-       struct _ATOM_INTEGRATED_SYSTEM_INFO_V6 info_6;
-       struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_7 info_7;
-       struct _ATOM_INTEGRATED_SYSTEM_INFO_V1_8 info_8;
-};
-
 bool radeon_atombios_sideport_present(struct radeon_device *rdev)
 {
        struct radeon_mode_info *mode_info = &rdev->mode_info;