From 12927a8f80264256e6cb2d3241fe9d6f4ad7face Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 15 Jun 2015 06:20:54 +0000 Subject: [PATCH] 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 Tested-by: Keita Kobayashi Signed-off-by: Mark Brown --- sound/soc/sh/rcar/ssi.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 50fa3928a003..856917392b79 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -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); /* -- 2.20.1