This is a note to let you know that I've just added the patch titled
ASoC: davinci-mcasp: Correct rx format unit configuration
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-davinci-mcasp-correct-rx-format-unit-configuration.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fe0a29e163a5d045c73faab682a8dac71c2f8012 Mon Sep 17 00:00:00 2001
From: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Date: Thu, 4 Sep 2014 10:52:53 +0300
Subject: ASoC: davinci-mcasp: Correct rx format unit configuration
From: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
commit fe0a29e163a5d045c73faab682a8dac71c2f8012 upstream.
In case of capture we should not use rotation. The reverse and mask is
enough to get the data align correctly from the bus to MCU:
Format data from bus after reverse (XRBUF)
S16_LE: |LSB|MSB|xxx|xxx| |xxx|xxx|MSB|LSB|
S24_3LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB|
S24_LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB|
S32_LE: |LSB|DAT|DAT|MSB| |MSB|DAT|DAT|LSB|
With this patch all supported formats will work for playback and capture.
Reported-by: Jyri Sarha <jsarha@xxxxxx> (broken S24_3LE capture)
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/soc/davinci/davinci-mcasp.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -418,8 +418,17 @@ static int davinci_config_channel_size(s
{
u32 fmt;
u32 tx_rotate = (word_length / 4) & 0x7;
- u32 rx_rotate = (32 - word_length) / 4;
u32 mask = (1ULL << word_length) - 1;
+ /*
+ * For captured data we should not rotate, inversion and masking is
+ * enoguh to get the data to the right position:
+ * Format data from bus after reverse (XRBUF)
+ * S16_LE: |LSB|MSB|xxx|xxx| |xxx|xxx|MSB|LSB|
+ * S24_3LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB|
+ * S24_LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB|
+ * S32_LE: |LSB|DAT|DAT|MSB| |MSB|DAT|DAT|LSB|
+ */
+ u32 rx_rotate = 0;
/*
* if s BCLK-to-LRCLK ratio has been configured via the set_clkdiv()
Patches currently in stable-queue which might be from peter.ujfalusi@xxxxxx are
queue-3.14/asoc-davinci-mcasp-correct-rx-format-unit-configuration.patch
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