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ASoC: mcbsp: Add McBSP support for OMAP4 

This patch adds McBSP support for the OMAP4 CPU

Signed-off-by: Jorge Eduardo Candelaria <jorge.candelaria@ti.com>
Signed-off-by: Margarita Olaya Cabrera <magi.olaya@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Jorge Eduardo Candelaria 2010-12-20 11:32:47 -06:00 committed by Liam Girdwood
parent 991e02b446
commit d4686c654b
2 changed files with 36 additions and 3 deletions
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35
sound/soc/omap/omap-mcbsp.c
View File

@ -102,6 +102,17 @@ static const int omap24xx_dma_reqs[][2] = {
static const int omap24xx_dma_reqs[][2] = {};
#endif
#if defined(CONFIG_ARCH_OMAP4)
static const int omap44xx_dma_reqs[][2] = {
{ OMAP44XX_DMA_MCBSP1_TX, OMAP44XX_DMA_MCBSP1_RX },
{ OMAP44XX_DMA_MCBSP2_TX, OMAP44XX_DMA_MCBSP2_RX },
{ OMAP44XX_DMA_MCBSP3_TX, OMAP44XX_DMA_MCBSP3_RX },
{ OMAP44XX_DMA_MCBSP4_TX, OMAP44XX_DMA_MCBSP4_RX },
};
#else
static const int omap44xx_dma_reqs[][2] = {};
#endif
#if defined(CONFIG_ARCH_OMAP2420)
static const unsigned long omap2420_mcbsp_port[][2] = {
{ OMAP24XX_MCBSP1_BASE + OMAP_MCBSP_REG_DXR1,
@ -147,6 +158,21 @@ static const unsigned long omap34xx_mcbsp_port[][2] = {
static const unsigned long omap34xx_mcbsp_port[][2] = {};
#endif
#if defined(CONFIG_ARCH_OMAP4)
static const unsigned long omap44xx_mcbsp_port[][2] = {
{ OMAP44XX_MCBSP1_BASE + OMAP_MCBSP_REG_DXR,
OMAP44XX_MCBSP1_BASE + OMAP_MCBSP_REG_DRR },
{ OMAP44XX_MCBSP2_BASE + OMAP_MCBSP_REG_DXR,
OMAP44XX_MCBSP2_BASE + OMAP_MCBSP_REG_DRR },
{ OMAP44XX_MCBSP3_BASE + OMAP_MCBSP_REG_DXR,
OMAP44XX_MCBSP3_BASE + OMAP_MCBSP_REG_DRR },
{ OMAP44XX_MCBSP4_BASE + OMAP_MCBSP_REG_DXR,
OMAP44XX_MCBSP4_BASE + OMAP_MCBSP_REG_DRR },
};
#else
static const unsigned long omap44xx_mcbsp_port[][2] = {};
#endif
static void omap_mcbsp_set_threshold(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@ -224,7 +250,7 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream,
* 2 channels (stereo): size is 128 / 2 = 64 frames (2 * 64 words)
* 4 channels: size is 128 / 4 = 32 frames (4 * 32 words)
*/
if (cpu_is_omap343x()) {
if (cpu_is_omap343x() || cpu_is_omap44xx()) {
/*
* Rule for the buffer size. We should not allow
* smaller buffer than the FIFO size to avoid underruns
@ -332,6 +358,9 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
} else if (cpu_is_omap343x()) {
dma = omap24xx_dma_reqs[bus_id][substream->stream];
port = omap34xx_mcbsp_port[bus_id][substream->stream];
} else if (cpu_is_omap44xx()) {
dma = omap44xx_dma_reqs[bus_id][substream->stream];
port = omap44xx_mcbsp_port[bus_id][substream->stream];
} else {
return -ENODEV;
}
@ -498,11 +527,11 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
regs->spcr2 |= XINTM(3) | FREE;
regs->spcr1 |= RINTM(3);
/* RFIG and XFIG are not defined in 34xx */
if (!cpu_is_omap34xx()) {
if (!cpu_is_omap34xx() && !cpu_is_omap44xx()) {
regs->rcr2 |= RFIG;
regs->xcr2 |= XFIG;
}
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
regs->xccr = DXENDLY(1) | XDMAEN | XDISABLE;
regs->rccr = RFULL_CYCLE | RDMAEN | RDISABLE;
}

4
sound/soc/omap/omap-mcbsp.h
View File

@ -50,6 +50,10 @@ enum omap_mcbsp_div {
#undef NUM_LINKS
#define NUM_LINKS 3
#endif
#if defined(CONFIG_ARCH_OMAP4)
#undef NUM_LINKS
#define NUM_LINKS 4
#endif
#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3)
#undef NUM_LINKS
#define NUM_LINKS 5