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ASoC: rsnd: Don't stop HW even if a large number of errors occur

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Current SSI/SRC restarts HW if under/over flow happened to avoid L/R
invert issue. But it will stop HW if too many error happen.
But if it stops on HW, other side under/over flow happen. OTHA, it will
be forever loop interrupt if something strange error happen on
HW/driver without escape route of large number error.

To avoid this issue, it indicates error message if large number error
occur, and disables error interrupt.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2015-10-26 08:41:36 +00:00 committed by Mark Brown
parent c2dc47d5cf
commit 69e32a58bd
2 changed files with 19 additions and 13 deletions
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17
sound/soc/sh/rcar/src.c
View file

@ -690,6 +690,8 @@ static void __rsnd_src_interrupt_gen2(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);
spin_lock(&priv->lock);
@ -698,18 +700,19 @@ static void __rsnd_src_interrupt_gen2(struct rsnd_mod *mod,
goto rsnd_src_interrupt_gen2_out;
if (rsnd_src_error_record_gen2(mod)) {
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);
dev_dbg(dev, "%s[%d] restart\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
_rsnd_src_stop_gen2(mod);
if (src->err < 1024)
_rsnd_src_start_gen2(mod, io);
else
dev_warn(dev, "no more SRC restart\n");
_rsnd_src_start_gen2(mod, io);
}
if (src->err > 1024) {
rsnd_src_irq_disable_gen2(mod);
dev_warn(dev, "no more %s[%d] restart\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
}
rsnd_src_interrupt_gen2_out:

15
sound/soc/sh/rcar/ssi.c
View file

@ -456,6 +456,7 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
{
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;
@ -489,8 +490,6 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
/* DMA only */
if (is_dma && (status & (UIRQ | OIRQ))) {
struct device *dev = rsnd_priv_to_dev(priv);
/*
* restart SSI
*/
@ -498,14 +497,18 @@ static void __rsnd_ssi_interrupt(struct rsnd_mod *mod,
rsnd_mod_name(mod), rsnd_mod_id(mod));
rsnd_ssi_stop(mod, io, priv);
if (ssi->err < 1024)
rsnd_ssi_start(mod, io, priv);
else
dev_warn(dev, "no more SSI restart\n");
rsnd_ssi_start(mod, io, priv);
}
rsnd_ssi_record_error(ssi, status);
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));
}
rsnd_ssi_interrupt_out:
spin_unlock(&priv->lock);