From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
To make it easier to debug things let's dump the output types bitmask in
the crtc state dump. And to make life that much better, let's pretty
print it as a a human reaadable string as well.
v2: Have the caller pass in the buffer (Chris)
#undef OUTPUT_TYPE (Jani)
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 51 ++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8599e425abb1..9221f613643a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10683,6 +10683,52 @@ intel_dump_m_n_config(struct intel_crtc_state *pipe_config, char *id,
m_n->link_m, m_n->link_n, m_n->tu);
}
+#define OUTPUT_TYPE(x) [INTEL_OUTPUT_ ## x] = #x
+
+static const char * const output_type_str[] = {
+ OUTPUT_TYPE(UNUSED),
+ OUTPUT_TYPE(ANALOG),
+ OUTPUT_TYPE(DVO),
+ OUTPUT_TYPE(SDVO),
+ OUTPUT_TYPE(LVDS),
+ OUTPUT_TYPE(TVOUT),
+ OUTPUT_TYPE(HDMI),
+ OUTPUT_TYPE(DP),
+ OUTPUT_TYPE(EDP),
+ OUTPUT_TYPE(DSI),
+ OUTPUT_TYPE(UNKNOWN),
+ OUTPUT_TYPE(DP_MST),
+};
+
+#undef OUTPUT_TYPE
+
+static void snprintf_output_types(char *buf, size_t len,
+ unsigned int output_types)
+{
+ char *str = buf;
+ int i;
+
+ str[0] = '\0';
+
+ for (i = 0; i < ARRAY_SIZE(output_type_str); i++) {
+ int r;
+
+ if ((output_types & BIT(i)) == 0)
+ continue;
+
+ r = snprintf(str, len, "%s%s",
+ str != buf ? "," : "", output_type_str[i]);
+ if (r >= len)
+ break;
+ str += r;
+ len -= r;
+
+ output_types &= ~BIT(i);
+ }
+
+ WARN_ON_ONCE(output_types != 0);
+}
+
static void intel_dump_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config,
const char *context)
@@ -10693,10 +10739,15 @@ static void intel_dump_pipe_config(struct intel_crtc *crtc,
struct intel_plane *intel_plane;
struct intel_plane_state *state;
struct drm_framebuffer *fb;
+ char buf[64];
DRM_DEBUG_KMS("[CRTC:%d:%s]%s\n",
crtc->base.base.id, crtc->base.name, context);
+ snprintf_output_types(buf, sizeof(buf), pipe_config->output_types);
+ DRM_DEBUG_KMS("output_types: %s (0x%x)\n",
+ buf, pipe_config->output_types);
+
DRM_DEBUG_KMS("cpu_transcoder: %s, pipe bpp: %i, dithering: %i\n",
transcoder_name(pipe_config->cpu_transcoder),
pipe_config->pipe_bpp, pipe_config->dither);
--
2.13.5
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