diff options
| author | Ranjani Sridharan <ranjani.sridharan@linux.intel.com> | 2019-12-04 15:15:48 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-12-09 18:38:01 +0000 |
| commit | 3e62579436c6a7fc35de7318e6c5f495b8d0046c (patch) | |
| tree | 9c42a24e6cb7b1615920cb180441db6ae5e1d4f1 /sound/soc/sof/core.c | |
| parent | 78fd4ffd75eed354c1c8b567dd0b384053c933da (diff) | |
ASoC: SOF: core: modify the signature for snd_sof_create_page_table
Modify the signature for snd_sof_create_page_table to
take struct device pointer as an argument instead of
struct snd_sof_dev as this will be used by both the SOF
core device and its clients. Also, move the definition
out of core.c to utils.c.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191204211556.12671-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/core.c')
| -rw-r--r-- | sound/soc/sof/core.c | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c index 805918d3bcc0..6a7f342203e9 100644 --- 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" @@ -214,64 +213,6 @@ 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. */ static int sof_machine_check(struct snd_sof_dev *sdev) |