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authorLee Jones <lee.jones@linaro.org>2013-12-19 19:55:04 +0400
committerMark Brown <broonie@linaro.org>2014-01-07 19:37:20 +0400
commit05c56c24137273de3460872b6121a2bd762d11e8 (patch)
treeff25394b8d60a4284dd0d44c63094a33d389fb2e /sound/soc/ux500
parentf6c377520c26297cc870173df3cd0acdef08bc1c (diff)
downloadlinux-05c56c24137273de3460872b6121a2bd762d11e8.tar.xz
ASoC: ux500_pcm: Extend Device Tree support to deal with DMA data
Soon we will strip out pdata support from the Ux500 set of ASoC drivers. When this happens it will have to supply a DMA slave_config to the dmaengine. At the moment a great deal of this comes from pdata via AUXDATA. We need to become independent of this soon. This patch starts the process by allocating memory for the associated data structures and fetches the MSP id used for const struct indexing. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/ux500')
-rw-r--r--sound/soc/ux500/ux500_msp_i2s.c56
1 files changed, 41 insertions, 15 deletions
diff --git a/sound/soc/ux500/ux500_msp_i2s.c b/sound/soc/ux500/ux500_msp_i2s.c
index 1ca8b08ae993..7f2a4acddcd7 100644
--- a/sound/soc/ux500/ux500_msp_i2s.c
+++ b/sound/soc/ux500/ux500_msp_i2s.c
@@ -646,6 +646,34 @@ int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir)
}
+int ux500_msp_i2s_of_init_msp(struct platform_device *pdev,
+ struct ux500_msp *msp,
+ struct msp_i2s_platform_data **platform_data)
+{
+ struct msp_i2s_platform_data *pdata;
+
+ *platform_data = devm_kzalloc(&pdev->dev,
+ sizeof(struct msp_i2s_platform_data),
+ GFP_KERNEL);
+ pdata = *platform_data;
+ if (!pdata)
+ return -ENOMEM;
+
+ msp->playback_dma_data.dma_cfg = devm_kzalloc(&pdev->dev,
+ sizeof(struct stedma40_chan_cfg),
+ GFP_KERNEL);
+ if (!msp->playback_dma_data.dma_cfg)
+ return -ENOMEM;
+
+ msp->capture_dma_data.dma_cfg = devm_kzalloc(&pdev->dev,
+ sizeof(struct stedma40_chan_cfg),
+ GFP_KERNEL);
+ if (!msp->capture_dma_data.dma_cfg)
+ return -ENOMEM;
+
+ return 0;
+}
+
int ux500_msp_i2s_init_msp(struct platform_device *pdev,
struct ux500_msp **msp_p,
struct msp_i2s_platform_data *platform_data)
@@ -653,30 +681,28 @@ int ux500_msp_i2s_init_msp(struct platform_device *pdev,
struct resource *res = NULL;
struct device_node *np = pdev->dev.of_node;
struct ux500_msp *msp;
+ int ret;
*msp_p = devm_kzalloc(&pdev->dev, sizeof(struct ux500_msp), GFP_KERNEL);
msp = *msp_p;
if (!msp)
return -ENOMEM;
- if (np) {
- if (!platform_data) {
- platform_data = devm_kzalloc(&pdev->dev,
- sizeof(struct msp_i2s_platform_data), GFP_KERNEL);
- if (!platform_data)
- return -ENOMEM;
- }
- } else
- if (!platform_data)
+ if (!platform_data) {
+ if (np) {
+ ret = ux500_msp_i2s_of_init_msp(pdev, msp,
+ &platform_data);
+ if (ret)
+ return ret;
+ } else
return -EINVAL;
+ } else {
+ msp->playback_dma_data.dma_cfg = platform_data->msp_i2s_dma_tx;
+ msp->capture_dma_data.dma_cfg = platform_data->msp_i2s_dma_rx;
+ msp->id = platform_data->id;
+ }
- dev_dbg(&pdev->dev, "%s: Enter (name: %s, id: %d).\n", __func__,
- pdev->name, platform_data->id);
-
- msp->id = platform_data->id;
msp->dev = &pdev->dev;
- msp->playback_dma_data.dma_cfg = platform_data->msp_i2s_dma_tx;
- msp->capture_dma_data.dma_cfg = platform_data->msp_i2s_dma_rx;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {