ASoC: fsi: Add over/under run error settlement
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -67,6 +67,7 @@
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/* DOFF_ST */
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#define ERR_OVER 0x00000010
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#define ERR_UNDER 0x00000001
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#define ST_ERR (ERR_OVER | ERR_UNDER)
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/* CLK_RST */
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#define B_CLK 0x00000010
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@ -375,11 +376,12 @@ static int fsi_data_push(struct fsi_priv *fsi)
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{
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struct snd_pcm_runtime *runtime;
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struct snd_pcm_substream *substream = NULL;
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u32 status;
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int send;
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int fifo_free;
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int width;
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u8 *start;
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int i, over_period;
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int i, ret, over_period;
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if (!fsi ||
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!fsi->substream ||
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@ -435,23 +437,33 @@ static int fsi_data_push(struct fsi_priv *fsi)
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fsi->byte_offset += send * width;
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ret = 0;
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status = fsi_reg_read(fsi, DOFF_ST);
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if (status & ERR_OVER) {
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struct snd_soc_dai *dai = fsi_get_dai(substream);
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dev_err(dai->dev, "over run error\n");
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fsi_reg_write(fsi, DOFF_ST, status & ~ST_ERR);
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ret = -EIO;
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}
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fsi_irq_enable(fsi, 1);
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if (over_period)
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snd_pcm_period_elapsed(substream);
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return 0;
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return ret;
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}
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static int fsi_data_pop(struct fsi_priv *fsi)
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{
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struct snd_pcm_runtime *runtime;
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struct snd_pcm_substream *substream = NULL;
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u32 status;
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int free;
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int fifo_fill;
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int width;
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u8 *start;
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int i, over_period;
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int i, ret, over_period;
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if (!fsi ||
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!fsi->substream ||
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@ -506,12 +518,21 @@ static int fsi_data_pop(struct fsi_priv *fsi)
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fsi->byte_offset += fifo_fill * width;
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ret = 0;
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status = fsi_reg_read(fsi, DIFF_ST);
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if (status & ERR_UNDER) {
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struct snd_soc_dai *dai = fsi_get_dai(substream);
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dev_err(dai->dev, "under run error\n");
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fsi_reg_write(fsi, DIFF_ST, status & ~ST_ERR);
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ret = -EIO;
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}
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fsi_irq_enable(fsi, 0);
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if (over_period)
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snd_pcm_period_elapsed(substream);
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return 0;
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return ret;
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}
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static irqreturn_t fsi_interrupt(int irq, void *data)
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