ASoC: omap-mcbsp: Fix FS polarity for LEFT_J, DSP_A and DSP_B formats

Commit 75d9ac4 ("ASoC: Allow DAI formats to be specified in the dai_link")
changed DAI format flag values and we cannot simply invert anymore e.g.
frame-sync with ^= SND_SOC_DAIFMT_NB_IF (which was anyway misuse) as there
is no anymore fixed bit position for bit-clock or frame-sync inversion.

Fix this by relying only on DAI format flag values passed to us and by not
making any assumption on individual bit positions.

Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 1391ea0..894f2f3 100644 (file)
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -398,7 +398,7 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
 {
        struct omap_mcbsp_data *mcbsp_data = snd_soc_dai_get_drvdata(cpu_dai);
        struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs;
-       unsigned int temp_fmt = fmt;
+       bool inv_fs = false;
 
        if (mcbsp_data->configured)
                return 0;
@@ -430,21 +430,21 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
                regs->xcr2      |= XDATDLY(0);
                regs->spcr1     |= RJUST(2);
                /* Invert FS polarity configuration */
-               temp_fmt ^= SND_SOC_DAIFMT_NB_IF;
+               inv_fs = true;
                break;
        case SND_SOC_DAIFMT_DSP_A:
                /* 1-bit data delay */
                regs->rcr2      |= RDATDLY(1);
                regs->xcr2      |= XDATDLY(1);
                /* Invert FS polarity configuration */
-               temp_fmt ^= SND_SOC_DAIFMT_NB_IF;
+               inv_fs = true;
                break;
        case SND_SOC_DAIFMT_DSP_B:
                /* 0-bit data delay */
                regs->rcr2      |= RDATDLY(0);
                regs->xcr2      |= XDATDLY(0);
                /* Invert FS polarity configuration */
-               temp_fmt ^= SND_SOC_DAIFMT_NB_IF;
+               inv_fs = true;
                break;
        default:
                /* Unsupported data format */
@@ -468,7 +468,7 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
        }
 
        /* Set bit clock (CLKX/CLKR) and FS polarities */
-       switch (temp_fmt & SND_SOC_DAIFMT_INV_MASK) {
+       switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
        case SND_SOC_DAIFMT_NB_NF:
                /*
                 * Normal BCLK + FS.
@@ -489,6 +489,8 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai *cpu_dai,
        default:
                return -EINVAL;
        }
+       if (inv_fs == true)
+               regs->pcr0 ^= FSXP | FSRP;
 
        return 0;
 }