From 9d069dc00b02b886abe3cab5e369140f7cd78965 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 20 Sep 2012 20:29:12 -0700
Subject: ALSA: Make snd_sgbuf_get_{ptr|addr}() available for non-SG cases

Passing struct snd_dma_buffer pointer instead, so that they work no
matter whether real SG buffer is used or not.

This is a preliminary work for the HD-audio DSP loader code.

Signed-off-by: Ian Minett <ian_minett@creativelabs.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 include/sound/pcm.h | 39 ++++++++++++++-------------------------
 1 file changed, 14 insertions(+), 25 deletions(-)

(limited to 'include/sound/pcm.h')

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 669c85a7fb03..7e4e4e380106 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -983,53 +983,42 @@ static int snd_pcm_lib_alloc_vmalloc_32_buffer
 	_snd_pcm_lib_alloc_vmalloc_buffer \
 			(subs, size, GFP_KERNEL | GFP_DMA32 | __GFP_ZERO)
 
+#define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p)
+
 #ifdef CONFIG_SND_DMA_SGBUF
 /*
  * SG-buffer handling
  */
 #define snd_pcm_substream_sgbuf(substream) \
-	((substream)->runtime->dma_buffer_p->private_data)
-
-static inline dma_addr_t
-snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
-{
-	struct snd_sg_buf *sg = snd_pcm_substream_sgbuf(substream);
-	return snd_sgbuf_get_addr(sg, ofs);
-}
-
-static inline void *
-snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
-{
-	struct snd_sg_buf *sg = snd_pcm_substream_sgbuf(substream);
-	return snd_sgbuf_get_ptr(sg, ofs);
-}
+	snd_pcm_get_dma_buf(substream)->private_data
 
 struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream,
 				    unsigned long offset);
-unsigned int snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
-					  unsigned int ofs, unsigned int size);
-
 #else /* !SND_DMA_SGBUF */
 /*
  * fake using a continuous buffer
  */
+#define snd_pcm_sgbuf_ops_page	NULL
+#endif /* SND_DMA_SGBUF */
+
 static inline dma_addr_t
 snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
 {
-	return substream->runtime->dma_addr + ofs;
+	return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs);
 }
 
 static inline void *
 snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
 {
-	return substream->runtime->dma_area + ofs;
+	return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs);
 }
 
-#define snd_pcm_sgbuf_ops_page	NULL
-
-#define snd_pcm_sgbuf_get_chunk_size(subs, ofs, size)	(size)
-
-#endif /* SND_DMA_SGBUF */
+static inline unsigned int
+snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
+			     unsigned int ofs, unsigned int size)
+{
+	return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size);
+}
 
 /* handle mmap counter - PCM mmap callback should handle this counter properly */
 static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)
-- 
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