[Intel-gfx] [PATCH 1/5] drm/i915: Add fifo underrun reporting state to debugfs

[Ville Syrjälä]

On Thu, May 22, 2014 at 05:56:31PM +0200, Daniel Vetter wrote:
> On platforms with shared interrupt enable bits (which are shared even
> with the pipe CRC logic) there's some tricky corner cases. Add
> information to make debugging those easier.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

For patches 1,3,4:
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 16bbdc7243df..4a79d3fe35be 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2356,6 +2356,10 @@ static int i915_display_info(struct seq_file *m, void *unused)
>  				   x, y, crtc->cursor_addr,
>  				   yesno(active));
>  		}
> +
> +		seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s \n",
> +			   yesno(!crtc->cpu_fifo_underrun_disabled),
> +			   yesno(!crtc->pch_fifo_underrun_disabled));
>  	}
>  
>  	seq_printf(m, "\n");
> -- 
> 1.8.4.rc3
> 
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-- 
Ville Syrjälä
Intel OTC