OMAPDSS: HDMI4: Set correct CC for 8-channels layout

OMAP4 HDMI IP uses the 8-channel layout with 8-channel speaker
allocation mask when transmitting more than two channels.  But
the channel count field (CC) of the Audio InfoFrame's DB1 is
not updated for 8-channels.

As per HDMI Compliance Test 7.31 "Audio InfoFrame", CC = 7 is
required for 8-channels CA masks (0x13 and 0x1F).

Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/video/fbdev/omap2/dss/hdmi4_core.c b/drivers/video/fbdev/omap2/dss/hdmi4_core.c
index 7eafea5b8e19..2b8bd220fde6 100644
--- a/drivers/video/fbdev/omap2/dss/hdmi4_core.c
+++ b/drivers/video/fbdev/omap2/dss/hdmi4_core.c
@@ -795,7 +795,9 @@ int hdmi4_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
 
         /*
          * the HDMI IP needs to enable four stereo channels when transmitting
-         * more than 2 audio channels
+         * more than 2 audio channels.  Similarly, the channel count in the
+         * Audio InfoFrame has to match the sample_present bits (some channels
+         * are padded with zeroes)
          */
         if (channel_count == 2) {
                 audio_format.stereo_channels = HDMI_AUDIO_STEREO_ONECHANNEL;
@@ -807,6 +809,7 @@ int hdmi4_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
                                 HDMI_AUDIO_I2S_SD1_EN | HDMI_AUDIO_I2S_SD2_EN |
                                 HDMI_AUDIO_I2S_SD3_EN;
                 acore.layout = HDMI_AUDIO_LAYOUT_8CH;
+                audio->cea->db1_ct_cc = 7;
         }
 
         acore.en_spdif = false;