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ASoC: davinci-mcasp: Correct rx format unit configuration 

commit fe0a29e163 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@ti.com> (broken S24_3LE capture)
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Ujfalusi 2014-09-04 10:52:53 +03:00 committed by Greg Kroah-Hartman
parent e47c229565
commit 8e3006d02b
1 changed files with 10 additions and 1 deletions
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11
sound/soc/davinci/davinci-mcasp.c
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@ -418,8 +418,17 @@ static int davinci_config_channel_size(struct davinci_mcasp *mcasp,
{
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()