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Subject[PATCH 15/18] ASoC: davinci-mcasp: Use dmaengine based platform driver for AM335x/447x
Date
Use the edma-pcm with AM335x and AM447x SoCs.
Keep using the davinci-pcm for DaVinci devices, they can be switched to use
the dmaengine based driver later when they are verified to work correctly.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
sound/soc/davinci/davinci-mcasp.c | 46 +++++++++++++++++++++++++++++++++------
1 file changed, 39 insertions(+), 7 deletions(-)

diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index b0ae0677f023..604aa982f5c4 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -36,6 +36,7 @@

#include "davinci-pcm.h"
#include "davinci-mcasp.h"
+#include "edma-pcm.h"

struct davinci_mcasp_context {
u32 txfmtctl;
@@ -721,10 +722,12 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
{
struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);

- if (mcasp->version == MCASP_VERSION_4)
+ if (mcasp->version >= MCASP_VERSION_3)
+ /* Using dmaengine PCM */
snd_soc_dai_set_dma_data(dai, substream,
&mcasp->dma_data[substream->stream]);
else
+ /* Using davinci-pcm */
snd_soc_dai_set_dma_data(dai, substream, mcasp->dma_params);

return 0;
@@ -1154,12 +1157,28 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
if (ret != 0)
goto err_release_clk;

- if (mcasp->version != MCASP_VERSION_4) {
+ /* Based on the McASP version use different platform driver */
+ switch (mcasp->version) {
+ case MCASP_VERSION_1:
+ case MCASP_VERSION_2:
ret = davinci_soc_platform_register(&pdev->dev);
- if (ret) {
- dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
- goto err_unregister_component;
- }
+ break;
+ case MCASP_VERSION_3:
+ ret = edma_pcm_platform_register(&pdev->dev);
+ break;
+ case MCASP_VERSION_4:
+ /* Using omap-pcm as platform driver */
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid McASP version: %d\n",
+ mcasp->version);
+ ret = -EINVAL;
+ break;
+ }
+
+ if (ret) {
+ dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
+ goto err_unregister_component;
}

return 0;
@@ -1177,8 +1196,21 @@ static int davinci_mcasp_remove(struct platform_device *pdev)
struct davinci_mcasp *mcasp = dev_get_drvdata(&pdev->dev);

snd_soc_unregister_component(&pdev->dev);
- if (mcasp->version != MCASP_VERSION_4)
+
+ switch (mcasp->version) {
+ case MCASP_VERSION_1:
+ case MCASP_VERSION_2:
davinci_soc_platform_unregister(&pdev->dev);
+ break;
+ case MCASP_VERSION_3:
+ edma_pcm_platform_unregister(&pdev->dev);
+ break;
+ case MCASP_VERSION_4:
+ /* Using omap-pcm as platform driver */
+ break;
+ default:
+ break;
+ }

pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
--
1.9.0


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