ASoC: SOF: core: modify the signature for snd_sof_create_page_table

[linux-2.6-microblaze.git] / sound / soc / sof / core.c

diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c
index 805918d..6a7f342 100644 (file)
--- a/sound/soc/sof/core.c
+++ b/sound/soc/sof/core.c
@@ -10,7 +10,6 @@
 
 #include <linux/firmware.h>
 #include <linux/module.h>
-#include <asm/unaligned.h>
 #include <sound/soc.h>
 #include <sound/sof.h>
 #include "sof-priv.h"
@@ -213,64 +212,6 @@ out:
 }
 EXPORT_SYMBOL(snd_sof_get_status);
 
-/*
- * Generic buffer page table creation.
- * Take the each physical page address and drop the least significant unused
- * bits from each (based on PAGE_SIZE). Then pack valid page address bits
- * into compressed page table.
- */
-
-int snd_sof_create_page_table(struct snd_sof_dev *sdev,
-                             struct snd_dma_buffer *dmab,
-                             unsigned char *page_table, size_t size)
-{
-       int i, pages;
-
-       pages = snd_sgbuf_aligned_pages(size);
-
-       dev_dbg(sdev->dev, "generating page table for %p size 0x%zx pages %d\n",
-               dmab->area, size, pages);
-
-       for (i = 0; i < pages; i++) {
-               /*
-                * The number of valid address bits for each page is 20.
-                * idx determines the byte position within page_table
-                * where the current page's address is stored
-                * in the compressed page_table.
-                * This can be calculated by multiplying the page number by 2.5.
-                */
-               u32 idx = (5 * i) >> 1;
-               u32 pfn = snd_sgbuf_get_addr(dmab, i * PAGE_SIZE) >> PAGE_SHIFT;
-               u8 *pg_table;
-
-               dev_vdbg(sdev->dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn);
-
-               pg_table = (u8 *)(page_table + idx);
-
-               /*
-                * pagetable compression:
-                * byte 0     byte 1     byte 2     byte 3     byte 4     byte 5
-                * ___________pfn 0__________ __________pfn 1___________  _pfn 2...
-                * .... ....  .... ....  .... ....  .... ....  .... ....  ....
-                * It is created by:
-                * 1. set current location to 0, PFN index i to 0
-                * 2. put pfn[i] at current location in Little Endian byte order
-                * 3. calculate an intermediate value as
-                *    x = (pfn[i+1] << 4) | (pfn[i] & 0xf)
-                * 4. put x at offset (current location + 2) in LE byte order
-                * 5. increment current location by 5 bytes, increment i by 2
-                * 6. continue to (2)
-                */
-               if (i & 1)
-                       put_unaligned_le32((pg_table[0] & 0xf) | pfn << 4,
-                                          pg_table);
-               else
-                       put_unaligned_le32(pfn, pg_table);
-       }
-
-       return pages;
-}
-
 /*
  * SOF Driver enumeration.
  */