[9/9,v4] ASoC: fsi: Configure DMA slave settings

Commit Message

Kuninori Morimoto Jan. 22, 2015, 3:49 a.m. UTC

From: Kuninori Morimoto <[e-mail]>

Current FSI driver is assuming that dst_addr/src_addr of DMAEngine
will be set by platform data. But it should be set via
dmaengine_slave_config(). Special thanks to Arnd

Reported-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Kuninori Morimoto <[e-mail]>
---
v3 -> v4

 - new patch

 sound/soc/sh/fsi.c |   15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

Patch

diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index dc28b03..bb20550 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -250,6 +250,7 @@  struct fsi_clk {
 
 struct fsi_priv {
 	void __iomem *base;
+	phys_addr_t phys;
 	struct fsi_master *master;
 
 	struct fsi_stream playback;
@@ -1374,9 +1375,15 @@  static int fsi_dma_probe(struct fsi_priv *fsi, struct fsi_stream *io, struct dev
 		struct dma_slave_config cfg = {};
 		int ret;
 
-		cfg.dst_addr	= 0; /* use default addr */
-		cfg.src_addr	= 0; /* use default addr */
-		cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
+		if (is_play) {
+			cfg.dst_addr		= fsi->phys + REG_DODT;
+			cfg.dst_addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES;
+			cfg.direction		= DMA_MEM_TO_DEV;
+		} else {
+			cfg.src_addr		= fsi->phys + REG_DIDT;
+			cfg.src_addr_width	= DMA_SLAVE_BUSWIDTH_4_BYTES;
+			cfg.direction		= DMA_DEV_TO_MEM;
+		}
 
 		ret = dmaengine_slave_config(io->chan, &cfg);
 		if (ret < 0) {
@@ -1940,6 +1947,7 @@  static int fsi_probe(struct platform_device *pdev)
 	/* FSI A setting */
 	fsi		= &master->fsia;
 	fsi->base	= master->base;
+	fsi->phys	= res->start;
 	fsi->master	= master;
 	fsi_port_info_init(fsi, &info.port_a);
 	fsi_handler_init(fsi, &info.port_a);
@@ -1952,6 +1960,7 @@  static int fsi_probe(struct platform_device *pdev)
 	/* FSI B setting */
 	fsi		= &master->fsib;
 	fsi->base	= master->base + 0x40;
+	fsi->phys	= res->start + 0x40;
 	fsi->master	= master;
 	fsi_port_info_init(fsi, &info.port_b);
 	fsi_handler_init(fsi, &info.port_b);