From: <jiada_wang@mentor.com>
To: <lgirdwood@gmail.com>, <broonie@kernel.org>, <perex@perex.cz>,
<tiwai@suse.com>, <kuninori.morimoto.gx@renesas.com>
Cc: <jiada_wang@mentor.com>, <twischer@de.adit-jv.com>,
<dragos_tarcatu@mentor.com>, <alsa-devel@alsa-project.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH linux-next 01/10] ASoC: rsnd: ssi: Request dedicated dma channels for busif1 to 7
Date: Thu, 27 Sep 2018 14:03:58 +0900 [thread overview]
Message-ID: <20180927050407.17765-2-jiada_wang@mentor.com> (raw)
In-Reply-To: <20180927050407.17765-1-jiada_wang@mentor.com>
From: Jiada Wang <jiada_wang@mentor.com>
Currently ssi driver only request dma channel for SSI_0,
which is used to transfer data to/from busif0.
But since busif1 to busif7 also maybe used, dedicated dma channels
are request for data transfer between these busif.
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
---
sound/soc/sh/rcar/ssi.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 3adcc4f778f7..75a3d15084c2 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -76,6 +76,8 @@
#define SSI_NAME "ssi"
+#define SSI_DMA_NAME_SIZE 10
+
struct rsnd_ssi {
struct rsnd_mod mod;
@@ -938,12 +940,20 @@ static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io,
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
int is_play = rsnd_io_is_play(io);
- char *name;
+ int busif = rsnd_ssi_get_busif(io);
+ char name[SSI_DMA_NAME_SIZE];
- if (rsnd_ssi_use_busif(io))
- name = is_play ? "rxu" : "txu";
- else
- name = is_play ? "rx" : "tx";
+ if (rsnd_ssi_use_busif(io)) {
+ if (is_play)
+ snprintf(name, SSI_DMA_NAME_SIZE, "rxu%d", busif);
+ else
+ snprintf(name, SSI_DMA_NAME_SIZE, "txu%d", busif);
+ } else {
+ if (is_play)
+ snprintf(name, SSI_DMA_NAME_SIZE, "rx");
+ else
+ snprintf(name, SSI_DMA_NAME_SIZE, "tx");
+ }
return rsnd_dma_request_channel(rsnd_ssi_of_node(priv),
mod, name);
--
2.17.0
next prev parent reply other threads:[~2018-09-27 5:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-27 5:03 [PATCH linux-next 00/10] ASoC: rsnd: support to set different busif jiada_wang
2018-09-27 5:03 ` jiada_wang [this message]
2018-09-28 0:08 ` [PATCH linux-next 01/10] ASoC: rsnd: ssi: Request dedicated dma channels for busif1 to 7 Kuninori Morimoto
2018-10-02 7:52 ` Jiada Wang
2018-09-27 5:03 ` [PATCH linux-next 02/10] arm64: r8a7795: add dma request number for busif1 ~ busif7 jiada_wang
2018-09-27 5:04 ` [PATCH linux-next 03/10] arm64: r8a7796: " jiada_wang
2018-09-27 5:04 ` [PATCH linux-next 04/10] arm64: r8a774a1: " jiada_wang
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