[PATCH v2 30/40] drm/i915/tgl: Report valid VDBoxes with SFC capability

Lucas De Marchi
2019-08-17T09:39:59Z

From: Michel Thierry <michel.thierry@intel.com>

In Gen11, only even numbered "logical" VDBoxes are hooked up to a SFC
(Scaler & Format Converter) unit. This is not the case in Tigerlake,
where each VDBox can access a SFC.

We will use this information to decide when the SFC units need to be reset
and also pass it to the GuC.

Bspec: 48077
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
drivers/gpu/drm/i915/intel_device_info.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index a3017d16b7f3..d0ed44d33484 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -1022,8 +1022,9 @@ void intel_device_info_init_mmio(struct drm_i915_private *dev_priv)
/*
* In Gen11, only even numbered logical VDBOXes are
* hooked up to an SFC (Scaler & Format Converter) unit.
+ * In TGL each VDBOX has access to an SFC.
*/
- if (logical_vdbox++ % 2 == 0)
+ if (IS_TIGERLAKE(dev_priv) || logical_vdbox++ % 2 == 0)
RUNTIME_INFO(dev_priv)->vdbox_sfc_access |= BIT(i);
}
DRM_DEBUG_DRIVER("vdbox enable: %04x, instances: %04lx\n",
--
2.21.0