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ASoC: DaVinci: Added two clocking possibilities to McBSP (I2S)

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Added two clocking options for dm365 McBSP peripheral when used
    with I2S timings, that are SND_SOC_DAIFMT_CBS_CFS (the cpu generates
    clock and frame sync) and SND_SOC_DAIFMT_CBS_CFM (the cpu gets clock
    from external pin and generates frame sync).
    A slave clock management can be important when the external codec needs
    the system clock and the bit clock synchronized (tested with uda1345).
    This patch has been developed against the:
        http://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci.git
    git tree and has been tested on bmx board (similar to dm365 evm, but using
    uda1345 as external audio codec).

Signed-off-by: Raffaele Recalcati <raffaele.recalcati@bticino.it>
Signed-off-by: Davide Bonfanti <davide.bonfanti@bticino.it>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Acked-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Raffaele Recalcati
2010-07-06 10:39:02 +02:00
committed by Mark Brown
parent 088fbab406
commit a4c8ea2dda
2 changed files with 106 additions and 9 deletions
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5
sound/soc/davinci/davinci-i2s.h
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@@ -12,6 +12,11 @@
#ifndef _DAVINCI_I2S_H
#define _DAVINCI_I2S_H
/* McBSP dividers */
enum davinci_mcbsp_div {
DAVINCI_MCBSP_CLKGDV, /* Sample rate generator divider */
};
extern struct snd_soc_dai davinci_i2s_dai;
#endif