diff options
| author | Gary Zhang <b13634@freescale.com> | 2011-12-07 14:46:54 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-01-09 21:09:34 +0800 |
| commit | e8e4d61ed88a693eec3bd527bc01610425fa069c (patch) | |
| tree | 1b31f245a0ede2c7cbc499f61955033d64260d06 /sound | |
| parent | cc9616316bf044382ec422da5a6d4ed007235a3d (diff) | |
ENGR00162797 SSI: add I2S mode for stereo playback
Former stereo playback uses network mode which does not
suppot 24bit format well.
Add I2S mode to do the same manner with codec.
Signed-off-by: Gary Zhang <b13634@freescale.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/imx/imx-ssi.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c index 5878de80794c..89640dc90c41 100644 --- a/sound/soc/imx/imx-ssi.c +++ b/sound/soc/imx/imx-ssi.c @@ -99,10 +99,6 @@ static int imx_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) case SND_SOC_DAIFMT_I2S: /* data on rising edge of bclk, frame low 1clk before data */ strcr |= SSI_STCR_TFSI | SSI_STCR_TEFS | SSI_STCR_TXBIT0; - 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 */ @@ -138,10 +134,21 @@ static int imx_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) /* DAI clock master masks */ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + strcr |= SSI_STCR_TFDIR | SSI_STCR_TXDIR; + if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S) { + scr &= ~SSI_I2S_MODE_MASK; + scr |= SSI_SCR_I2S_MODE_MSTR; + } + break; case SND_SOC_DAIFMT_CBM_CFM: + strcr &= ~(SSI_STCR_TFDIR | SSI_STCR_TXDIR); + if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S) { + scr &= ~SSI_I2S_MODE_MASK; + scr |= SSI_SCR_I2S_MODE_SLAVE; + } break; default: - /* Master mode not implemented, needs handling of clocks. */ return -EINVAL; } @@ -279,9 +286,10 @@ static int imx_ssi_hw_params(struct snd_pcm_substream *substream, scr = readl(ssi->base + SSI_SCR); - if (channels == 1) + if (channels == 1) { scr &= ~SSI_SCR_NET; - else + scr &= ~SSI_I2S_MODE_MASK; + } else scr |= SSI_SCR_NET; writel(scr, ssi->base + SSI_SCR); |