On 04/18/2013 02:33 PM, Markus Pargmann wrote:
This patch adds the possibility to pass a of_node as platform_data which is used by generic-pcm-dma to request a DMA slave channel.
Signed-off-by: Markus Pargmann mpa@pengutronix.de
sound/soc/fsl/imx-pcm-dma.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c index c246fb5..8945d22 100644 --- a/sound/soc/fsl/imx-pcm-dma.c +++ b/sound/soc/fsl/imx-pcm-dma.c @@ -62,9 +62,11 @@ static const struct snd_dmaengine_pcm_config imx_dmaengine_pcm_config = {
int imx_pcm_dma_init(struct platform_device *pdev) {
- if (pdev->dev.platform_data)
pdev->dev.of_node = pdev->dev.platform_data;
In my opinion it's better to use pdev->dev.parent->of_node here. In the ssi driver you use platform_device_register_data, which will create a copy of the of_node you pass in as platform data. I'm not quite sure how well this will work. If you want to continue to use platform_data you should at least change the code in the ssi driver to not make a copy of the of_node.
- Lars
- return snd_dmaengine_pcm_register(&pdev->dev, &imx_dmaengine_pcm_config, SND_DMAENGINE_PCM_FLAG_NO_RESIDUE |
SND_DMAENGINE_PCM_FLAG_NO_DT |}