From cace841cece3b2d6c26af2f6adb9d0752d95c849 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 22 May 2014 17:56:31 +0200 Subject: [PATCH] drm/i915: Add fifo underrun reporting state to debugfs MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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. Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- 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 169fc2d8c554..98ab492ee60a 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2357,6 +2357,10 @@ 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"); -- 2.11.0