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Commit 6a25c8da authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
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ASoC: rsnd: don't auto-recover when under/over run error 



Renesas R-Car sound needs recovery (= restart) when under/over run
error occurred, and current driver tries it on under/over run error
handler automatically. But this recovery should be handled by userland,
not kernel. This patch stops XRUN when under/over run error occur, and
will leave the recovery of HW in userland.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 31739a68

sound/soc/sh/rcar/src.c

+8 −31
Original line number Diff line number Diff line
@@ -25,7 +25,6 @@ struct rsnd_src { 
	struct rsnd_kctrl_cfg_s sen;  /* sync convert enable */

	struct rsnd_kctrl_cfg_s sync; /* sync convert */

	u32 convert_rate; /* sampling rate convert */

	int err;

	int irq;

};
@@ -316,7 +315,7 @@ static void rsnd_src_status_clear(struct rsnd_mod *mod) 
	rsnd_mod_bset(mod, SCU_SYS_STATUS1, val, val);

}



static bool rsnd_src_record_error(struct rsnd_mod *mod)

static bool rsnd_src_error_occurred(struct rsnd_mod *mod)

{

	struct rsnd_src *src = rsnd_mod_to_src(mod);

	u32 val0, val1;
@@ -333,12 +332,8 @@ static bool rsnd_src_record_error(struct rsnd_mod *mod) 
		val0 = val0 & 0xffff;



	if ((rsnd_mod_read(mod, SCU_SYS_STATUS0) & val0) ||

	    (rsnd_mod_read(mod, SCU_SYS_STATUS1) & val1)) {

		struct rsnd_src *src = rsnd_mod_to_src(mod);



		src->err++;

	    (rsnd_mod_read(mod, SCU_SYS_STATUS1) & val1))

		ret = true;

	}



	return ret;

}
@@ -388,8 +383,6 @@ static int rsnd_src_init(struct rsnd_mod *mod, 


	rsnd_src_irq_enable(mod);



	src->err = 0;



	/* reset sync convert_rate */

	src->sync.val = 0;
@@ -401,7 +394,6 @@ static int rsnd_src_quit(struct rsnd_mod *mod, 
			 struct rsnd_priv *priv)

{

	struct rsnd_src *src = rsnd_mod_to_src(mod);

	struct device *dev = rsnd_priv_to_dev(priv);



	rsnd_src_irq_disable(mod);
@@ -409,10 +401,6 @@ static int rsnd_src_quit(struct rsnd_mod *mod, 


	rsnd_mod_power_off(mod);



	if (src->err)

		dev_warn(dev, "%s[%d] under/over flow err = %d\n",

			 rsnd_mod_name(mod), rsnd_mod_id(mod), src->err);



	src->convert_rate = 0;



	/* reset sync convert_rate */
@@ -425,8 +413,7 @@ static void __rsnd_src_interrupt(struct rsnd_mod *mod, 
				 struct rsnd_dai_stream *io)

{

	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);

	struct rsnd_src *src = rsnd_mod_to_src(mod);

	struct device *dev = rsnd_priv_to_dev(priv);

	bool stop = false;



	spin_lock(&priv->lock);
@@ -434,26 +421,16 @@ static void __rsnd_src_interrupt(struct rsnd_mod *mod, 
	if (!rsnd_io_is_working(io))

		goto rsnd_src_interrupt_out;



	if (rsnd_src_record_error(mod)) {



		dev_dbg(dev, "%s[%d] restart\n",

			rsnd_mod_name(mod), rsnd_mod_id(mod));



		rsnd_src_stop(mod, io, priv);

		rsnd_src_start(mod, io, priv);

	}



	if (src->err > 1024) {

		rsnd_src_irq_disable(mod);



		dev_warn(dev, "no more %s[%d] restart\n",

			 rsnd_mod_name(mod), rsnd_mod_id(mod));

	}

	if (rsnd_src_error_occurred(mod))

		stop = true;



	rsnd_src_status_clear(mod);

rsnd_src_interrupt_out:



	spin_unlock(&priv->lock);



	if (stop)

		snd_pcm_stop_xrun(io->substream);

}



static irqreturn_t rsnd_src_interrupt(int irq, void *data)

sound/soc/sh/rcar/ssi.c

+21 −76
Original line number Diff line number Diff line
@@ -74,7 +74,6 @@ struct rsnd_ssi { 
	u32 wsr;

	int chan;

	int rate;

	int err;

	int irq;

	unsigned int usrcnt;

};
@@ -385,8 +384,6 @@ static int rsnd_ssi_init(struct rsnd_mod *mod, 
	if (ret < 0)

		return ret;



	ssi->err	= -1; /* ignore 1st error */



	/* clear error status */

	rsnd_ssi_status_clear(mod);
@@ -409,13 +406,7 @@ static int rsnd_ssi_quit(struct rsnd_mod *mod, 
	}



	if (!rsnd_ssi_is_parent(mod, io)) {

		if (ssi->err > 0)

			dev_warn(dev, "%s[%d] under/over flow err = %d\n",

				 rsnd_mod_name(mod), rsnd_mod_id(mod),

				 ssi->err);



		ssi->cr_own	= 0;

		ssi->err	= 0;



		rsnd_ssi_irq_disable(mod);

	}
@@ -455,19 +446,7 @@ static int rsnd_ssi_hw_params(struct rsnd_mod *mod, 
	return 0;

}



static u32 rsnd_ssi_record_error(struct rsnd_ssi *ssi)

{

	struct rsnd_mod *mod = rsnd_mod_get(ssi);

	u32 status = rsnd_ssi_status_get(mod);



	/* under/over flow error */

	if (status & (UIRQ | OIRQ))

		ssi->err++;



	return status;

}



static int __rsnd_ssi_start(struct rsnd_mod *mod,

static int rsnd_ssi_start(struct rsnd_mod *mod,

			  struct rsnd_dai_stream *io,

			  struct rsnd_priv *priv)

{
@@ -491,25 +470,21 @@ static int __rsnd_ssi_start(struct rsnd_mod *mod, 
	return 0;

}



static int rsnd_ssi_start(struct rsnd_mod *mod,

static int rsnd_ssi_stop(struct rsnd_mod *mod,

			 struct rsnd_dai_stream *io,

			 struct rsnd_priv *priv)

{

	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);

	u32 cr;



	/*

	 * no limit to start

	 * don't stop if not last user

	 * see also

	 *	rsnd_ssi_stop

	 *	rsnd_ssi_start

	 *	rsnd_ssi_interrupt

	 */

	return __rsnd_ssi_start(mod, io, priv);

}



static int __rsnd_ssi_stop(struct rsnd_mod *mod,

			   struct rsnd_dai_stream *io,

			   struct rsnd_priv *priv)

{

	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);

	u32 cr;

	if (ssi->usrcnt > 1)

		return 0;



	/*

	 * disable all IRQ,
@@ -531,33 +506,14 @@ static int __rsnd_ssi_stop(struct rsnd_mod *mod, 
	return 0;

}



static int rsnd_ssi_stop(struct rsnd_mod *mod,

			 struct rsnd_dai_stream *io,

			 struct rsnd_priv *priv)

{

	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);



	/*

	 * don't stop if not last user

	 * see also

	 *	rsnd_ssi_start

	 *	rsnd_ssi_interrupt

	 */

	if (ssi->usrcnt > 1)

		return 0;



	return __rsnd_ssi_stop(mod, io, priv);

}



static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,

				 struct rsnd_dai_stream *io)

{

	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);

	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);

	struct device *dev = rsnd_priv_to_dev(priv);

	int is_dma = rsnd_ssi_is_dma_mode(mod);

	u32 status;

	bool elapsed = false;

	bool stop = false;



	spin_lock(&priv->lock);
@@ -565,7 +521,7 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod, 
	if (!rsnd_io_is_working(io))

		goto rsnd_ssi_interrupt_out;



	status = rsnd_ssi_record_error(ssi);

	status = rsnd_ssi_status_get(mod);



	/* PIO only */

	if (!is_dma && (status & DIRQ)) {
@@ -587,23 +543,8 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod, 
	}



	/* DMA only */

	if (is_dma && (status & (UIRQ | OIRQ))) {

		/*

		 * restart SSI

		 */

		dev_dbg(dev, "%s[%d] restart\n",

			rsnd_mod_name(mod), rsnd_mod_id(mod));



		__rsnd_ssi_stop(mod, io, priv);

		__rsnd_ssi_start(mod, io, priv);

	}



	if (ssi->err > 1024) {

		rsnd_ssi_irq_disable(mod);



		dev_warn(dev, "no more %s[%d] restart\n",

			 rsnd_mod_name(mod), rsnd_mod_id(mod));

	}

	if (is_dma && (status & (UIRQ | OIRQ)))

		stop = true;



	rsnd_ssi_status_clear(mod);

rsnd_ssi_interrupt_out:
@@ -611,6 +552,10 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod, 


	if (elapsed)

		rsnd_dai_period_elapsed(io);



	if (stop)

		snd_pcm_stop_xrun(io->substream);



}



static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)