[Intel-gfx] [PATCH] drm/i915/bdw: Broaden FBC resolution limit to 4096x4096

[Sun, Daisy]

Yes, the change starts from HSW. I'll update the patch.
what's the "rant" I need to insert? I was not in the list a year ago:), 
having some trouble find the email as reference.
Any archives I can look into?


On 6/16/2014 11:15 AM, Daniel Vetter wrote:
> On Mon, Jun 16, 2014 at 06:11:45PM +0100, Damien Lespiau wrote:
>> On Mon, Jun 16, 2014 at 05:52:12PM +0100, Damien Lespiau wrote:
>>> From: Daisy Sun <daisy.sun at intel.com>
>>>
>>> Staring from BDW, the resolution limit of FBC has increased to
>>> 4096x4096>
>>>
>>> Issue: APDEV-2935
>>> Otc-Tracker: VIZ-3826
>>> Change-Id: I842f64e3cf2c0d18d29ef1bcfef3b9bb1f1764ac
>>> Signed-off-by: Daisy Sun <daisy.sun at intel.com>
>> Reviewed-by: Damien Lespiau <damien.lespiau at intel.com>
> Iirc 4kx4k is allowed on hsw already, albeit with the lower 2k lines being
> uncompressed. Please double-check bspec and update the patch.
>
> Also: Please insert rant here that I've written a mail a year ago about
> the piles of little issues in our fbc feature checking.
> -Daniel
>
>> -- 
>> Damien
>>
>>> ---
>>>   drivers/gpu/drm/i915/intel_pm.c | 5 ++++-
>>>   1 file changed, 4 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>>> index 0b088fe..8cc60fc 100644
>>> --- a/drivers/gpu/drm/i915/intel_pm.c
>>> +++ b/drivers/gpu/drm/i915/intel_pm.c
>>> @@ -529,7 +529,10 @@ void intel_update_fbc(struct drm_device *dev)
>>>   		goto out_disable;
>>>   	}
>>>   
>>> -	if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) {
>>> +	if (INTEL_INFO(dev)->gen >= 8) {
>>> +		max_width = 4096;
>>> +		max_height = 4096;
>>> +	} else if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) {
>>>   		max_width = 4096;
>>>   		max_height = 2048;
>>>   	} else {
>>> -- 
>>> 1.8.3.1
>>>
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