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ASoC: OMAP: Initialize XCCR and RCCR registers in McBSP DAI driver

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This patch explicitly initializes McBSP Transmit Configuration
Control Register (XCCR) and Receive Configuration Control
Register (RCCR) to their reset values. Reset values are 26 ns
of DX delay and Transmit DMA disabled for XCCR register;
receive full cycle mode enabled and Receive DMA disabled for
RCCR register.

This patch requires a counterpart in OMAP McBSP driver before
to apply it. The required changes in McBSP were sent and approved
in linux-omap mailing list and patch is going upstream
(commit 3127f8f859 from linux-omap-2.6
tree).

Signed-off-by: Misael Lopez Cruz <x0052729@ti.com>
[ jarkko.nikula@nokia.com: Commit id for counterpart patch corrected ]
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Misael Lopez Cruz 2009-01-29 13:29:46 +02:00 committed by Mark Brown
parent 9e70c1f099
commit ef390c0b6e
1 changed files with 4 additions and 0 deletions
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4
sound/soc/omap/omap-mcbsp.c
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@ -302,6 +302,10 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
regs->spcr1 |= RINTM(3);
regs->rcr2 |= RFIG;
regs->xcr2 |= XFIG;
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
regs->xccr = DXENDLY(1) | XDMAEN;
regs->rccr = RFULL_CYCLE | RDMAEN;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S: