drm/radeon: add pci config hard reset

This is used to hard reset the asic. If a soft reset is not able to reset things, a hard reset can be used. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-02 13:01:36 -04:00
parent 363eb0b4b7
commit 1a0041b8f9
2 changed files with 9 additions and 0 deletions
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -144,6 +144,11 @@ void radeon_program_register_sequence(struct radeon_device *rdev,
 	}
 }

+void radeon_pci_config_reset(struct radeon_device *rdev)
+{
+	pci_write_config_dword(rdev->pdev, 0x7c, RADEON_ASIC_RESET_DATA);
+}
+
 /**
 * radeon_surface_init - Clear GPU surface registers.
 *