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authorRussell King <rmk+kernel@arm.linux.org.uk>2015-03-30 16:20:44 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2015-03-30 16:20:44 +0100
commit8c7a075da9f7980cc95ffcd7e6621d4a87f20f40 (patch)
treeb1bb1dfe8c5afee86e56b505e459f910935a3a00 /drivers/gpu/drm/i2c
parent07259f8b9fbd30fcef595e872deeea5ffab934ed (diff)
downloadblackbird-op-linux-8c7a075da9f7980cc95ffcd7e6621d4a87f20f40.tar.gz
blackbird-op-linux-8c7a075da9f7980cc95ffcd7e6621d4a87f20f40.zip
drm/i2c: tda998x: use drm_hdmi_avi_infoframe_from_display_mode()
Make use of the DRM HDMI AVI infoframe helper to construct the AVI infoframe, rather than coding this up ourselves. This allows DRM to supply proper aspect ratio information derived from the DRM display mode structure. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/i2c')
-rw-r--r--drivers/gpu/drm/i2c/tda998x_drv.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 43d5d91fe880..fbc9c1facdfe 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -610,19 +610,21 @@ tda998x_write_aif(struct tda998x_priv *priv, struct tda998x_encoder_params *p)
static void
tda998x_write_avi(struct tda998x_priv *priv, struct drm_display_mode *mode)
{
- u8 buf[PB(HDMI_AVI_INFOFRAME_SIZE) + 1];
+ struct hdmi_avi_infoframe frame;
+ u8 buf[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
+ ssize_t len;
- memset(buf, 0, sizeof(buf));
- buf[HB(0)] = HDMI_INFOFRAME_TYPE_AVI;
- buf[HB(1)] = 0x02;
- buf[HB(2)] = HDMI_AVI_INFOFRAME_SIZE;
- buf[PB(1)] = HDMI_SCAN_MODE_UNDERSCAN;
- buf[PB(2)] = HDMI_ACTIVE_ASPECT_PICTURE;
- buf[PB(3)] = HDMI_QUANTIZATION_RANGE_FULL << 2;
- buf[PB(4)] = drm_match_cea_mode(mode);
-
- tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, buf,
- sizeof(buf));
+ drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
+
+ frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
+
+ len = hdmi_avi_infoframe_pack(&frame, buf, sizeof(buf));
+ if (len < 0) {
+ dev_err(&priv->hdmi->dev, "hdmi_avi_infoframe_pack() failed: %d\n", len);
+ return;
+ }
+
+ tda998x_write_if(priv, DIP_IF_FLAGS_IF2, REG_IF2_HB0, buf, len);
}
static void tda998x_audio_mute(struct tda998x_priv *priv, bool on)
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