Merge branch 'topic/nomm' into for-linus

[pandora-kernel.git] / sound / core / pcm_native.c

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index cadba30..4c3edc1 100644 (file)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -36,6 +36,9 @@
 #include <sound/timer.h>
 #include <sound/minors.h>
 #include <asm/io.h>
+#if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
+#include <dma-coherence.h>
+#endif
 
 /*
  *  Compatibility
@@ -2107,7 +2110,9 @@ static int snd_pcm_open_file(struct file *file,
 static int snd_pcm_playback_open(struct inode *inode, struct file *file)
 {
        struct snd_pcm *pcm;
-
+       int err = nonseekable_open(inode, file);
+       if (err < 0)
+               return err;
        pcm = snd_lookup_minor_data(iminor(inode),
                                    SNDRV_DEVICE_TYPE_PCM_PLAYBACK);
        return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK);
@@ -2116,7 +2121,9 @@ static int snd_pcm_playback_open(struct inode *inode, struct file *file)
 static int snd_pcm_capture_open(struct inode *inode, struct file *file)
 {
        struct snd_pcm *pcm;
-
+       int err = nonseekable_open(inode, file);
+       if (err < 0)
+               return err;
        pcm = snd_lookup_minor_data(iminor(inode),
                                    SNDRV_DEVICE_TYPE_PCM_CAPTURE);
        return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE);
@@ -3184,6 +3191,10 @@ static int snd_pcm_default_mmap(struct snd_pcm_substream *substream,
                                         substream->runtime->dma_area,
                                         substream->runtime->dma_addr,
                                         area->vm_end - area->vm_start);
+#elif defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
+       if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV &&
+           !plat_device_is_coherent(substream->dma_buffer.dev.dev))
+               area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
 #endif /* ARCH_HAS_DMA_MMAP_COHERENT */
        /* mmap with fault handler */
        area->vm_ops = &snd_pcm_vm_ops_data_fault;
@@ -3429,14 +3440,28 @@ out:
 #endif /* CONFIG_SND_SUPPORT_OLD_API */
 
 #ifndef CONFIG_MMU
-unsigned long dummy_get_unmapped_area(struct file *file, unsigned long addr,
-                                     unsigned long len, unsigned long pgoff,
-                                     unsigned long flags)
-{
-       return 0;
+static unsigned long snd_pcm_get_unmapped_area(struct file *file,
+                                              unsigned long addr,
+                                              unsigned long len,
+                                              unsigned long pgoff,
+                                              unsigned long flags)
+{
+       struct snd_pcm_file *pcm_file = file->private_data;
+       struct snd_pcm_substream *substream = pcm_file->substream;
+       struct snd_pcm_runtime *runtime = substream->runtime;
+       unsigned long offset = pgoff << PAGE_SHIFT;
+
+       switch (offset) {
+       case SNDRV_PCM_MMAP_OFFSET_STATUS:
+               return (unsigned long)runtime->status;
+       case SNDRV_PCM_MMAP_OFFSET_CONTROL:
+               return (unsigned long)runtime->control;
+       default:
+               return (unsigned long)runtime->dma_area + offset;
+       }
 }
 #else
-# define dummy_get_unmapped_area NULL
+# define snd_pcm_get_unmapped_area NULL
 #endif
 
 /*
@@ -3450,12 +3475,13 @@ const struct file_operations snd_pcm_f_ops[2] = {
                .aio_write =            snd_pcm_aio_write,
                .open =                 snd_pcm_playback_open,
                .release =              snd_pcm_release,
+               .llseek =               no_llseek,
                .poll =                 snd_pcm_playback_poll,
                .unlocked_ioctl =       snd_pcm_playback_ioctl,
                .compat_ioctl =         snd_pcm_ioctl_compat,
                .mmap =                 snd_pcm_mmap,
                .fasync =               snd_pcm_fasync,
-               .get_unmapped_area =    dummy_get_unmapped_area,
+               .get_unmapped_area =    snd_pcm_get_unmapped_area,
        },
        {
                .owner =                THIS_MODULE,
@@ -3463,11 +3489,12 @@ const struct file_operations snd_pcm_f_ops[2] = {
                .aio_read =             snd_pcm_aio_read,
                .open =                 snd_pcm_capture_open,
                .release =              snd_pcm_release,
+               .llseek =               no_llseek,
                .poll =                 snd_pcm_capture_poll,
                .unlocked_ioctl =       snd_pcm_capture_ioctl,
                .compat_ioctl =         snd_pcm_ioctl_compat,
                .mmap =                 snd_pcm_mmap,
                .fasync =               snd_pcm_fasync,
-               .get_unmapped_area =    dummy_get_unmapped_area,
+               .get_unmapped_area =    snd_pcm_get_unmapped_area,
        }
 };