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Commit 59c3b003 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
Browse files

ASoC: fsi: Add over/under run error settlement 



Signed-off-by: default avatarKuninori Morimoto <morimoto.kuninori@renesas.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 142e8174

sound/soc/sh/fsi.c

+25 −4
Original line number Diff line number Diff line
@@ -67,6 +67,7 @@ 
/* DOFF_ST */

#define ERR_OVER	0x00000010

#define ERR_UNDER	0x00000001

#define ST_ERR		(ERR_OVER | ERR_UNDER)



/* CLK_RST */

#define B_CLK		0x00000010
@@ -375,11 +376,12 @@ static int fsi_data_push(struct fsi_priv *fsi) 
{

	struct snd_pcm_runtime *runtime;

	struct snd_pcm_substream *substream = NULL;

	u32 status;

	int send;

	int fifo_free;

	int width;

	u8 *start;

	int i, over_period;

	int i, ret, over_period;



	if (!fsi			||

	    !fsi->substream		||
@@ -435,23 +437,33 @@ static int fsi_data_push(struct fsi_priv *fsi) 


	fsi->byte_offset += send * width;



	ret = 0;

	status = fsi_reg_read(fsi, DOFF_ST);

	if (status & ERR_OVER) {

		struct snd_soc_dai *dai = fsi_get_dai(substream);

		dev_err(dai->dev, "over run error\n");

		fsi_reg_write(fsi, DOFF_ST, status & ~ST_ERR);

		ret = -EIO;

	}



	fsi_irq_enable(fsi, 1);



	if (over_period)

		snd_pcm_period_elapsed(substream);



	return 0;

	return ret;

}



static int fsi_data_pop(struct fsi_priv *fsi)

{

	struct snd_pcm_runtime *runtime;

	struct snd_pcm_substream *substream = NULL;

	u32 status;

	int free;

	int fifo_fill;

	int width;

	u8 *start;

	int i, over_period;

	int i, ret, over_period;



	if (!fsi			||

	    !fsi->substream		||
@@ -506,12 +518,21 @@ static int fsi_data_pop(struct fsi_priv *fsi) 


	fsi->byte_offset += fifo_fill * width;



	ret = 0;

	status = fsi_reg_read(fsi, DIFF_ST);

	if (status & ERR_UNDER) {

		struct snd_soc_dai *dai = fsi_get_dai(substream);

		dev_err(dai->dev, "under run error\n");

		fsi_reg_write(fsi, DIFF_ST, status & ~ST_ERR);

		ret = -EIO;

	}



	fsi_irq_enable(fsi, 0);



	if (over_period)

		snd_pcm_period_elapsed(substream);



	return 0;

	return ret;

}



static irqreturn_t fsi_interrupt(int irq, void *data)