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ASoC: imx-ssi.c: add new choices to platform configuration 

* introduce 3 new flags to allow a more detailed configuration
of the SSI link :
	IMX_SSI_NET : enable Network Mode
	IMX_SSI_SYN : enable Synchronous Mode
	IMX_SSI_USE_I2S_SLAVE : enable I2S Slave Mode
* new platform can use these settings without breaking actual
platforms.

Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Eric Bénard 2010-05-27 10:58:54 +02:00 committed by Mark Brown
parent 749266cd91
commit 0e79612012
2 changed files with 12 additions and 2 deletions
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3
arch/arm/plat-mxc/include/mach/ssi.h
View File

@ -10,6 +10,9 @@ struct imx_ssi_platform_data {
unsigned int flags;
#define IMX_SSI_DMA (1 << 0)
#define IMX_SSI_USE_AC97 (1 << 1)
#define IMX_SSI_NET (1 << 2)
#define IMX_SSI_SYN (1 << 3)
#define IMX_SSI_USE_I2S_SLAVE (1 << 4)
void (*ac97_reset) (struct snd_ac97 *ac97);
void (*ac97_warm_reset)(struct snd_ac97 *ac97);
};

11
sound/soc/imx/imx-ssi.c
View File

@ -83,8 +83,6 @@ static int imx_ssi_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
/*
* SSI DAI format configuration.
* Should only be called when port is inactive (i.e. SSIEN = 0).
* Note: We don't use the I2S modes but instead manually configure the
* SSI for I2S because the I2S mode is only a register preset.
*/
static int imx_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
{
@ -99,6 +97,10 @@ static int imx_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
/* data on rising edge of bclk, frame low 1clk before data */
strcr |= SSI_STCR_TFSI | SSI_STCR_TEFS | SSI_STCR_TXBIT0;
scr |= SSI_SCR_NET;
if (ssi->flags & IMX_SSI_USE_I2S_SLAVE) {
scr &= ~SSI_I2S_MODE_MASK;
scr |= SSI_SCR_I2S_MODE_SLAVE;
}
break;
case SND_SOC_DAIFMT_LEFT_J:
/* data on rising edge of bclk, frame high with data */
@ -143,6 +145,11 @@ static int imx_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
strcr |= SSI_STCR_TFEN0;
if (ssi->flags & IMX_SSI_NET)
scr |= SSI_SCR_NET;
if (ssi->flags & IMX_SSI_SYN)
scr |= SSI_SCR_SYN;
writel(strcr, ssi->base + SSI_STCR);
writel(strcr, ssi->base + SSI_SRCR);
writel(scr, ssi->base + SSI_SCR);