linux-kernel - [PATCH 1/3] ASoC: ux500_pcm: Stop pretending that we support varying address widths

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Message-Id: <1386007222-10081-1-git-send-email-lee.jones@linaro.org>
Date:	Mon,  2 Dec 2013 18:00:20 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	linus.walleij@...aro.org, broonie@...nel.org,
	Lee Jones <lee.jones@...aro.org>, alsa-devel@...a-project.org
Subject: [PATCH 1/3] ASoC: ux500_pcm: Stop pretending that we support varying address widths

The Slave Config's addr_width attribute is populated by data_width of
dma_cfg, which in turn is derived from dma_params' data_size attribute
and that comes from the slot_width which is always 16 bits (2 Bytes).
We're cutting out the middle man here and just setting the DMA Slave
Config directly.

Cc: alsa-devel@...a-project.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 sound/soc/ux500/ux500_pcm.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/sound/soc/ux500/ux500_pcm.c b/sound/soc/ux500/ux500_pcm.c
index 6162f70..2f1bdb7 100644
--- a/sound/soc/ux500/ux500_pcm.c
+++ b/sound/soc/ux500/ux500_pcm.c
@@ -104,26 +104,25 @@ static int ux500_pcm_prepare_slave_config(struct snd_pcm_substream *substream,
 		struct dma_slave_config *slave_config)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct ux500_msp_dma_params *dma_params;
-	struct stedma40_chan_cfg *dma_cfg;
+	struct snd_dmaengine_dai_dma_data *dma_params;
 	int ret;
 
 	dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-	dma_cfg = dma_params->dma_cfg;
 
 	ret = snd_hwparams_to_dma_slave_config(substream, params, slave_config);
 	if (ret)
 		return ret;
 
 	slave_config->dst_maxburst = 4;
-	slave_config->dst_addr_width = dma_cfg->dst_info.data_width;
 	slave_config->src_maxburst = 4;
-	slave_config->src_addr_width = dma_cfg->src_info.data_width;
+
+	slave_config->src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+	slave_config->dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		slave_config->dst_addr = dma_params->tx_rx_addr;
+		slave_config->dst_addr = dma_params->addr;
 	else
-		slave_config->src_addr = dma_params->tx_rx_addr;
+		slave_config->src_addr = dma_params->addr;
 
 	return 0;
 }
-- 
1.8.3.2

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