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-rw-r--r--sound/soc/samsung/s3c-dma-wrapper.c267
1 files changed, 267 insertions, 0 deletions
diff --git a/sound/soc/samsung/s3c-dma-wrapper.c b/sound/soc/samsung/s3c-dma-wrapper.c
new file mode 100644
index 0000000..2f87b68
--- /dev/null
+++ b/sound/soc/samsung/s3c-dma-wrapper.c
@@ -0,0 +1,267 @@
+/*
+ * s3c-dma-wrapper.c -- S3C DMA Platform Wrapper Driver
+ *
+ * Copyright (c) 2010 Samsung Electronics Co. Ltd
+ * Jaswinder Singh <jassi.brar@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <sound/soc.h>
+#include "dma.h"
+#include "s3c-idma.h"
+
+static int s3c_wrpdma_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->hw_params)
+ return platform->ops->hw_params(substream, params);
+ else
+ return 0;
+}
+
+static int s3c_wrpdma_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->hw_free)
+ return platform->ops->hw_free(substream);
+ else
+ return 0;
+}
+
+static int s3c_wrpdma_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->prepare)
+ return platform->ops->prepare(substream);
+ else
+ return 0;
+}
+
+static int s3c_wrpdma_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->trigger)
+ return platform->ops->trigger(substream, cmd);
+ else
+ return 0;
+}
+
+static snd_pcm_uframes_t s3c_wrpdma_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->pointer)
+ return platform->ops->pointer(substream);
+ else
+ return 0;
+}
+
+static int s3c_wrpdma_open(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->open)
+ return platform->ops->open(substream);
+ else
+ return 0;
+}
+
+static int s3c_wrpdma_close(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->close)
+ return platform->ops->close(substream);
+ else
+ return 0;
+}
+
+static int s3c_wrpdma_ioctl(struct snd_pcm_substream *substream,
+ unsigned int cmd, void *arg)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->ioctl)
+ return platform->ops->ioctl(substream, cmd, arg);
+ else
+ return 0;
+}
+
+static int s3c_wrpdma_mmap(struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ struct snd_soc_platform_driver *platform;
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ platform = &idma_soc_platform;
+ else
+#endif
+ platform = &samsung_asoc_platform;
+
+ if (platform->ops->mmap)
+ return platform->ops->mmap(substream, vma);
+ else
+ return 0;
+}
+
+static struct snd_pcm_ops s3c_wrpdma_ops = {
+ .open = s3c_wrpdma_open,
+ .close = s3c_wrpdma_close,
+ .ioctl = s3c_wrpdma_ioctl,
+ .hw_params = s3c_wrpdma_hw_params,
+ .hw_free = s3c_wrpdma_hw_free,
+ .prepare = s3c_wrpdma_prepare,
+ .trigger = s3c_wrpdma_trigger,
+ .pointer = s3c_wrpdma_pointer,
+ .mmap = s3c_wrpdma_mmap,
+};
+
+static void s3c_wrpdma_pcm_free(struct snd_pcm *pcm)
+{
+ struct snd_soc_platform_driver *gdma_platform;
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ struct snd_soc_platform_driver *idma_platform;
+#endif
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ idma_platform = &idma_soc_platform;
+ if (idma_platform->pcm_free)
+ idma_platform->pcm_free(pcm);
+#endif
+ gdma_platform = &samsung_asoc_platform;
+ if (gdma_platform->pcm_free)
+ gdma_platform->pcm_free(pcm);
+}
+
+static int s3c_wrpdma_pcm_new(struct snd_card *card,
+ struct snd_soc_dai *dai, struct snd_pcm *pcm)
+{
+ struct snd_soc_platform_driver *gdma_platform;
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ struct snd_soc_platform_driver *idma_platform;
+#endif
+
+ /* sec_fifo i/f always use internal h/w buffers
+ * irrespective of the xfer method (iDMA or SysDMA) */
+
+#ifdef CONFIG_S5P_INTERNAL_DMA
+ idma_platform = &idma_soc_platform;
+ if (idma_platform->pcm_new)
+ idma_platform->pcm_new(card, dai, pcm);
+#endif
+ gdma_platform = &samsung_asoc_platform;
+ if (gdma_platform->pcm_new)
+ gdma_platform->pcm_new(card, dai, pcm);
+
+ return 0;
+}
+
+static struct snd_soc_platform_driver s3c_dma_wrapper = {
+ .ops = &s3c_wrpdma_ops,
+ .pcm_new = s3c_wrpdma_pcm_new,
+ .pcm_free = s3c_wrpdma_pcm_free,
+};
+//EXPORT_SYMBOL_GPL(s3c_dma_wrapper);
+
+static int __devinit s3c_dma_wrapper_platform_probe(struct platform_device *pdev)
+{
+ return snd_soc_register_platform(&pdev->dev, &s3c_dma_wrapper);
+}
+
+static int __devexit s3c_dma_wrapper_platform_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_platform(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver s3c_dma_wrapper_driver = {
+ .driver = {
+ .name = "samsung-audio",
+ .owner = THIS_MODULE,
+ },
+
+ .probe = s3c_dma_wrapper_platform_probe,
+ .remove = __devexit_p(s3c_dma_wrapper_platform_remove),
+};
+
+static int __init s3c_dma_wrapper_init(void)
+{
+ return platform_driver_register(&s3c_dma_wrapper_driver);
+}
+module_init(s3c_dma_wrapper_init);
+
+static void __exit s3c_dma_wrapper_exit(void)
+{
+ platform_driver_unregister(&s3c_dma_wrapper_driver);
+}
+module_exit(s3c_dma_wrapper_exit);
+
+MODULE_AUTHOR("Jaswinder Singh, <jassi.brar@samsung.com>");
+MODULE_DESCRIPTION("Audio DMA wrapper module");
+MODULE_LICENSE("GPL");
generated by cgit v1.1 at 2025-01-07 19:40:05 +0000