path: root/sound
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authorMatthias Blankertz <matthias.blankertz@cetitec.com>2020-04-15 16:10:17 +0200
committerMark Brown <broonie@kernel.org>2020-04-16 12:44:59 +0100
commitb94e164759b82d0c1c80d4b1c8f12c9bee83f11d (patch)
treecb729a5457001794b55a7c26e1c63ba4382d7ec1 /sound
parentASoC: rsnd: Fix parent SSI start/stop in multi-SSI mode (diff)
ASoC: rsnd: Fix HDMI channel mapping for multi-SSI mode
The HDMI?_SEL register maps up to four stereo SSI data lanes onto the sdata[0..3] inputs of the HDMI output block. The upper half of the register contains four blocks of 4 bits, with the most significant controlling the sdata3 line and the least significant the sdata0 line. The shift calculation has an off-by-one error, causing the parent SSI to be mapped to sdata3, the first multi-SSI child to sdata0 and so forth. As the parent SSI transmits the stereo L/R channels, and the HDMI core expects it on the sdata0 line, this causes no audio to be output when playing stereo audio on a multichannel capable HDMI out, and multichannel audio has permutated channels. Fix the shift calculation to map the parent SSI to sdata0, the first child to sdata1 etc. Signed-off-by: Matthias Blankertz <matthias.blankertz@cetitec.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/20200415141017.384017-3-matthias.blankertz@cetitec.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/sh/rcar/ssiu.c b/sound/soc/sh/rcar/ssiu.c
index f35d88211887..9c7c3e7539c9 100644
--- a/sound/soc/sh/rcar/ssiu.c
+++ b/sound/soc/sh/rcar/ssiu.c
@@ -221,7 +221,7 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
for_each_rsnd_mod_array(i, pos, io, rsnd_ssi_array) {
- shift = (i * 4) + 16;
+ shift = (i * 4) + 20;
val = (val & ~(0xF << shift)) |
rsnd_mod_id(pos) << shift;