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ASoC: rsnd: don't care under/over run error when PIO 

PIO is used only for checking data path / codec settings. And underrun
is very normal when PIO mode. Let's don't care about under/over run
error when PIO case. Otherwise, 1) too many HW restart happens, 2) some
sounds which need much data transfer can't play since it falls into
error detection method which was created for DMA transfer

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2015-06-15 06:20:54 +00:00 committed by Mark Brown
parent 02299d9875
commit 12927a8f80
1 changed files with 9 additions and 7 deletions
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16
sound/soc/sh/rcar/ssi.c
View File

@ -199,15 +199,17 @@ static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi,
}
}
cr_mode = rsnd_ssi_is_dma_mode(&ssi->mod) ?
DMEN : /* DMA : enable DMA */
DIEN; /* PIO : enable Data interrupt */
if (rsnd_ssi_is_dma_mode(&ssi->mod)) {
cr_mode = UIEN | OIEN | /* over/under run */
DMEN; /* DMA : enable DMA */
} else {
cr_mode = DIEN; /* PIO : enable Data interrupt */
}
cr = ssi->cr_own |
ssi->cr_clk |
cr_mode |
UIEN | OIEN | EN;
EN;
rsnd_mod_write(&ssi->mod, SSICR, cr);
@ -452,8 +454,8 @@ static irqreturn_t rsnd_ssi_interrupt(int irq, void *data)
rsnd_dai_pointer_update(io, sizeof(*buf));
}
/* PIO / DMA */
if (status & (UIRQ | OIRQ)) {
/* DMA only */
if (is_dma && (status & (UIRQ | OIRQ))) {
struct device *dev = rsnd_priv_to_dev(priv);
/*