[PATCH 3.13 152/212] drm/radeon: handle non-VGA class pci devices with ATRM

Kamal Mostafa
2014-06-17T21:44:06Z

From: Alex Deucher <alexdeucher@gmail.com>

commit d8ade3526b2aa0505132c404c05a38b73ea15490 upstream.

Newer PX systems have non-VGA pci class dGPUs. Update
the ATRM fetch method to handle those cases.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=75401

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/radeon/radeon_bios.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
index b3633d9..9ab3097 100644
--- a/drivers/gpu/drm/radeon/radeon_bios.c
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -196,6 +196,20 @@ static bool radeon_atrm_get_bios(struct radeon_device *rdev)
}
}

+ if (!found) {
+ while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) {
+ dhandle = ACPI_HANDLE(&pdev->dev);
+ if (!dhandle)
+ continue;
+
+ status = acpi_get_handle(dhandle, "ATRM", &atrm_handle);
+ if (!ACPI_FAILURE(status)) {
+ found = true;
+ break;
+ }
+ }
+ }
+
if (!found)
return false;

--
1.9.1