lib: introduce common method to convert hex digits

[safe/jmp/linux-2.6] / include / sound / pcm.h

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 3bc9bca..dd76cde 100644 (file)
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -29,6 +29,7 @@
 #include <linux/poll.h>
 #include <linux/mm.h>
 #include <linux/bitops.h>
+#include <linux/pm_qos_params.h>
 
 #define snd_pcm_substream_chip(substream) ((substream)->private_data)
 #define snd_pcm_chip(pcm) ((pcm)->private_data)
@@ -271,6 +272,7 @@ struct snd_pcm_runtime {
        int overrange;
        snd_pcm_uframes_t avail_max;
        snd_pcm_uframes_t hw_ptr_base;  /* Position at buffer restart */
+       snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */
        unsigned long hw_ptr_jiffies;   /* Time when hw_ptr is updated */
        snd_pcm_sframes_t delay;        /* extra delay; typically FIFO size */
 
@@ -364,7 +366,7 @@ struct snd_pcm_substream {
        int number;
        char name[32];                  /* substream name */
        int stream;                     /* stream (direction) */
-       char latency_id[20];            /* latency identifier */
+       struct pm_qos_request_list *latency_pm_qos_req; /* pm_qos request */
        size_t buffer_bytes_max;        /* limit ring buffer size */
        struct snd_dma_buffer dma_buffer;
        unsigned int dma_buf_id;
@@ -914,6 +916,44 @@ int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
 int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size);
 int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream);
 
+int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream,
+                                     size_t size, gfp_t gfp_flags);
+int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream);
+struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
+                                         unsigned long offset);
+#if 0 /* for kernel-doc */
+/**
+ * snd_pcm_lib_alloc_vmalloc_buffer - allocate virtual DMA buffer
+ * @substream: the substream to allocate the buffer to
+ * @size: the requested buffer size, in bytes
+ *
+ * Allocates the PCM substream buffer using vmalloc(), i.e., the memory is
+ * contiguous in kernel virtual space, but not in physical memory.  Use this
+ * if the buffer is accessed by kernel code but not by device DMA.
+ *
+ * Returns 1 if the buffer was changed, 0 if not changed, or a negative error
+ * code.
+ */
+static int snd_pcm_lib_alloc_vmalloc_buffer
+                       (struct snd_pcm_substream *substream, size_t size);
+/**
+ * snd_pcm_lib_alloc_vmalloc_32_buffer - allocate 32-bit-addressable buffer
+ * @substream: the substream to allocate the buffer to
+ * @size: the requested buffer size, in bytes
+ *
+ * This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses
+ * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory.
+ */
+static int snd_pcm_lib_alloc_vmalloc_32_buffer
+                       (struct snd_pcm_substream *substream, size_t size);
+#endif
+#define snd_pcm_lib_alloc_vmalloc_buffer(subs, size) \
+       _snd_pcm_lib_alloc_vmalloc_buffer \
+                       (subs, size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO)
+#define snd_pcm_lib_alloc_vmalloc_32_buffer(subs, size) \
+       _snd_pcm_lib_alloc_vmalloc_buffer \
+                       (subs, size, GFP_KERNEL | GFP_DMA32 | __GFP_ZERO)
+
 #ifdef CONFIG_SND_DMA_SGBUF
 /*
  * SG-buffer handling
@@ -984,6 +1024,10 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_s
 #define snd_pcm_lib_mmap_iomem NULL
 #endif
 
+int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream,
+                              struct vm_area_struct *area);
+#define snd_pcm_lib_mmap_vmalloc       snd_pcm_lib_mmap_noncached
+
 static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
 {
        *max = dma < 4 ? 64 * 1024 : 128 * 1024;