Re: [PATCH 2/2] drm/i915/display/tgl: Bump up the plane/fb height to support 8K

[Manasi Navare <manasi.d.navare@intel.com>]

On Wed, Jul 10, 2019 at 10:18:38PM +0300, Ville Syrjälä wrote:
> On Tue, Jul 09, 2019 at 02:47:35PM -0700, Manasi Navare wrote:
> > On TGL+, the plane height for 8K planes can be 4320, so bump it up
> > To support 4320, we need to increase the number of bits used to
> > read plane_height to 13 as opposed to older 12 bits.
> > 
> > Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_display.c | 21 ++++++++++++++++++--
> >  1 file changed, 19 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> > index 0d5c8af01f54..be9a54cb5ecc 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display.c
> > @@ -3343,6 +3343,16 @@ static int icl_max_plane_width(const struct drm_framebuffer *fb,
> >  	return 5120;
> >  }
> >  
> > +static int skl_max_plane_height(void)
> > +{
> > +	return 4096;
> > +}
> > +
> > +static int tgl_max_plane_height(void)
> > +{
> > +	return 4320;

Yes icl does but we start supporting 8K from tgl, should this be changed to icl_max_plane_height()
and return 4320?

Manasi

> 
> icl has this limit already.
> 
> > +}
> > +
> >  static bool skl_check_main_ccs_coordinates(struct intel_plane_state *plane_state,
> >  					   int main_x, int main_y, u32 main_offset)
> >  {
> > @@ -3391,9 +3401,13 @@ static int skl_check_main_surface(struct intel_plane_state *plane_state)
> >  	int w = drm_rect_width(&plane_state->base.src) >> 16;
> >  	int h = drm_rect_height(&plane_state->base.src) >> 16;
> >  	int max_width;
> > -	int max_height = 4096;
> > +	int max_height;
> >  	u32 alignment, offset, aux_offset = plane_state->color_plane[1].offset;
> >  
> > +	if (INTEL_GEN(dev_priv) >= 12)
> > +		max_height = tgl_max_plane_height();
> > +	else
> > +		max_height = skl_max_plane_height();
> >  	if (INTEL_GEN(dev_priv) >= 11)
> >  		max_width = icl_max_plane_width(fb, 0, rotation);
> >  	else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
> > @@ -9865,7 +9879,10 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc,
> >  	offset = I915_READ(PLANE_OFFSET(pipe, plane_id));
> >  
> >  	val = I915_READ(PLANE_SIZE(pipe, plane_id));
> > -	fb->height = ((val >> 16) & 0xfff) + 1;
> > +	if (INTEL_GEN(dev_priv) >= 12)
> > +		fb->height = ((val >> 16) & 0x1fff) + 1;
> > +	else
> > +		fb->height = ((val >> 16) & 0xfff) + 1;
> >  	fb->width = ((val >> 0) & 0x1fff) + 1;
> >  
> >  	val = I915_READ(PLANE_STRIDE(pipe, plane_id));
> > -- 
> > 2.19.1
> 
> -- 
> Ville Syrjälä
> Intel
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