summaryrefslogtreecommitdiff
path: root/sound/core
diff options
context:
space:
mode:
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/compress_offload.c26
-rw-r--r--sound/core/control.c1
-rw-r--r--sound/core/info.c7
-rw-r--r--sound/core/info_oss.c3
-rw-r--r--sound/core/oss/mixer_oss.c2
-rw-r--r--sound/core/pcm.c4
-rw-r--r--sound/core/pcm_lib.c214
-rw-r--r--sound/core/pcm_memory.c26
-rw-r--r--sound/core/pcm_native.c19
-rw-r--r--sound/core/seq/seq_device.c2
-rw-r--r--sound/core/sgbuf.c27
-rw-r--r--sound/core/sound.c3
12 files changed, 291 insertions, 43 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index eb60cb8dbb8a..c40ae573346d 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -425,6 +425,26 @@ static int snd_compr_allocate_buffer(struct snd_compr_stream *stream,
return 0;
}
+static int snd_compress_check_input(struct snd_compr_params *params)
+{
+ /* first let's check the buffer parameter's */
+ if (params->buffer.fragment_size == 0 ||
+ params->buffer.fragments > SIZE_MAX / params->buffer.fragment_size)
+ return -EINVAL;
+
+ /* now codec parameters */
+ if (params->codec.id == 0 || params->codec.id > SND_AUDIOCODEC_MAX)
+ return -EINVAL;
+
+ if (params->codec.ch_in == 0 || params->codec.ch_out == 0)
+ return -EINVAL;
+
+ if (!(params->codec.sample_rate & SNDRV_PCM_RATE_8000_192000))
+ return -EINVAL;
+
+ return 0;
+}
+
static int
snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg)
{
@@ -443,11 +463,17 @@ snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg)
retval = -EFAULT;
goto out;
}
+
+ retval = snd_compress_check_input(params);
+ if (retval)
+ goto out;
+
retval = snd_compr_allocate_buffer(stream, params);
if (retval) {
retval = -ENOMEM;
goto out;
}
+
retval = stream->ops->set_params(stream, params);
if (retval)
goto out;
diff --git a/sound/core/control.c b/sound/core/control.c
index 2487a6bb1c54..7e86a5b9f3b5 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -246,6 +246,7 @@ struct snd_kcontrol *snd_ctl_new1(const struct snd_kcontrol_new *ncontrol,
kctl.count = ncontrol->count ? ncontrol->count : 1;
access = ncontrol->access == 0 ? SNDRV_CTL_ELEM_ACCESS_READWRITE :
(ncontrol->access & (SNDRV_CTL_ELEM_ACCESS_READWRITE|
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE|
SNDRV_CTL_ELEM_ACCESS_INACTIVE|
SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE|
SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND|
diff --git a/sound/core/info.c b/sound/core/info.c
index c1e611c65c8f..6b368d25073b 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -28,7 +28,7 @@
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/info.h>
-#include <sound/version.h>
+#include <linux/utsname.h>
#include <linux/proc_fs.h>
#include <linux/mutex.h>
#include <stdarg.h>
@@ -986,9 +986,8 @@ static struct snd_info_entry *snd_info_version_entry;
static void snd_info_version_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
snd_iprintf(buffer,
- "Advanced Linux Sound Architecture Driver Version "
- CONFIG_SND_VERSION CONFIG_SND_DATE ".\n"
- );
+ "Advanced Linux Sound Architecture Driver Version k%s.\n",
+ init_utsname()->release);
}
static int __init snd_info_version_init(void)
diff --git a/sound/core/info_oss.c b/sound/core/info_oss.c
index cf42ab5080eb..83c29dbff9c0 100644
--- a/sound/core/info_oss.c
+++ b/sound/core/info_oss.c
@@ -26,7 +26,6 @@
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/info.h>
-#include <sound/version.h>
#include <linux/utsname.h>
#include <linux/mutex.h>
@@ -94,7 +93,7 @@ static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int d
static void snd_sndstat_proc_read(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
- snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n");
+ snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
init_utsname()->sysname,
init_utsname()->nodename,
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index 18297f7f2c55..29f6ded02555 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -1046,6 +1046,7 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mix
if (kctl->info(kctl, uinfo)) {
up_read(&mixer->card->controls_rwsem);
+ kfree(uinfo);
return 0;
}
strcpy(str, ptr->name);
@@ -1061,6 +1062,7 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mix
uinfo->value.enumerated.item = slot.capture_item;
if (kctl->info(kctl, uinfo)) {
up_read(&mixer->card->controls_rwsem);
+ kfree(uinfo);
return 0;
}
if (!strcmp(uinfo->value.enumerated.name, str)) {
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 1a3070b4e5b5..f2991940b271 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -1105,6 +1105,10 @@ static int snd_pcm_dev_disconnect(struct snd_device *device)
break;
}
snd_unregister_device(devtype, pcm->card, pcm->device);
+ if (pcm->streams[cidx].chmap_kctl) {
+ snd_ctl_remove(pcm->card, pcm->streams[cidx].chmap_kctl);
+ pcm->streams[cidx].chmap_kctl = NULL;
+ }
}
unlock:
mutex_unlock(&register_mutex);
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 7ae671923393..f42c10a43315 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -26,6 +26,7 @@
#include <linux/export.h>
#include <sound/core.h>
#include <sound/control.h>
+#include <sound/tlv.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -2302,3 +2303,216 @@ snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream,
}
EXPORT_SYMBOL(snd_pcm_lib_readv);
+
+/*
+ * standard channel mapping helpers
+ */
+
+/* default channel maps for multi-channel playbacks, up to 8 channels */
+const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[] = {
+ { .channels = 1,
+ .map = { SNDRV_CHMAP_MONO } },
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
+ { .channels = 4,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
+ SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { .channels = 6,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
+ SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
+ { .channels = 8,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
+ SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
+ { }
+};
+EXPORT_SYMBOL_GPL(snd_pcm_std_chmaps);
+
+/* alternative channel maps with CLFE <-> surround swapped for 6/8 channels */
+const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[] = {
+ { .channels = 1,
+ .map = { SNDRV_CHMAP_MONO } },
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
+ { .channels = 4,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
+ SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { .channels = 6,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { .channels = 8,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
+ { }
+};
+EXPORT_SYMBOL_GPL(snd_pcm_alt_chmaps);
+
+static bool valid_chmap_channels(const struct snd_pcm_chmap *info, int ch)
+{
+ if (ch > info->max_channels)
+ return false;
+ return !info->channel_mask || (info->channel_mask & (1U << ch));
+}
+
+static int pcm_chmap_ctl_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 0;
+ uinfo->count = info->max_channels;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = SNDRV_CHMAP_LAST;
+ return 0;
+}
+
+/* get callback for channel map ctl element
+ * stores the channel position firstly matching with the current channels
+ */
+static int pcm_chmap_ctl_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
+ unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
+ struct snd_pcm_substream *substream;
+ const struct snd_pcm_chmap_elem *map;
+
+ if (snd_BUG_ON(!info->chmap))
+ return -EINVAL;
+ substream = snd_pcm_chmap_substream(info, idx);
+ if (!substream)
+ return -ENODEV;
+ memset(ucontrol->value.integer.value, 0,
+ sizeof(ucontrol->value.integer.value));
+ if (!substream->runtime)
+ return 0; /* no channels set */
+ for (map = info->chmap; map->channels; map++) {
+ int i;
+ if (map->channels == substream->runtime->channels &&
+ valid_chmap_channels(info, map->channels)) {
+ for (i = 0; i < map->channels; i++)
+ ucontrol->value.integer.value[i] = map->map[i];
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+/* tlv callback for channel map ctl element
+ * expands the pre-defined channel maps in a form of TLV
+ */
+static int pcm_chmap_ctl_tlv(struct snd_kcontrol *kcontrol, int op_flag,
+ unsigned int size, unsigned int __user *tlv)
+{
+ struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
+ const struct snd_pcm_chmap_elem *map;
+ unsigned int __user *dst;
+ int c, count = 0;
+
+ if (snd_BUG_ON(!info->chmap))
+ return -EINVAL;
+ if (size < 8)
+ return -ENOMEM;
+ if (put_user(SNDRV_CTL_TLVT_CONTAINER, tlv))
+ return -EFAULT;
+ size -= 8;
+ dst = tlv + 2;
+ for (map = info->chmap; map->channels; map++) {
+ int chs_bytes = map->channels * 4;
+ if (!valid_chmap_channels(info, map->channels))
+ continue;
+ if (size < 8)
+ return -ENOMEM;
+ if (put_user(SNDRV_CTL_TLVT_CHMAP_FIXED, dst) ||
+ put_user(chs_bytes, dst + 1))
+ return -EFAULT;
+ dst += 2;
+ size -= 8;
+ count += 8;
+ if (size < chs_bytes)
+ return -ENOMEM;
+ size -= chs_bytes;
+ count += chs_bytes;
+ for (c = 0; c < map->channels; c++) {
+ if (put_user(map->map[c], dst))
+ return -EFAULT;
+ dst++;
+ }
+ }
+ if (put_user(count, tlv + 1))
+ return -EFAULT;
+ return 0;
+}
+
+static void pcm_chmap_ctl_private_free(struct snd_kcontrol *kcontrol)
+{
+ struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
+ info->pcm->streams[info->stream].chmap_kctl = NULL;
+ kfree(info);
+}
+
+/**
+ * snd_pcm_add_chmap_ctls - create channel-mapping control elements
+ * @pcm: the assigned PCM instance
+ * @stream: stream direction
+ * @chmap: channel map elements (for query)
+ * @max_channels: the max number of channels for the stream
+ * @private_value: the value passed to each kcontrol's private_value field
+ * @info_ret: store struct snd_pcm_chmap instance if non-NULL
+ *
+ * Create channel-mapping control elements assigned to the given PCM stream(s).
+ * Returns zero if succeed, or a negative error value.
+ */
+int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream,
+ const struct snd_pcm_chmap_elem *chmap,
+ int max_channels,
+ unsigned long private_value,
+ struct snd_pcm_chmap **info_ret)
+{
+ struct snd_pcm_chmap *info;
+ struct snd_kcontrol_new knew = {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+ SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK,
+ .info = pcm_chmap_ctl_info,
+ .get = pcm_chmap_ctl_get,
+ .tlv.c = pcm_chmap_ctl_tlv,
+ };
+ int err;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ info->pcm = pcm;
+ info->stream = stream;
+ info->chmap = chmap;
+ info->max_channels = max_channels;
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ knew.name = "Playback Channel Map";
+ else
+ knew.name = "Capture Channel Map";
+ knew.device = pcm->device;
+ knew.count = pcm->streams[stream].substream_count;
+ knew.private_value = private_value;
+ info->kctl = snd_ctl_new1(&knew, info);
+ if (!info->kctl) {
+ kfree(info);
+ return -ENOMEM;
+ }
+ info->kctl->private_free = pcm_chmap_ctl_private_free;
+ err = snd_ctl_add(pcm->card, info->kctl);
+ if (err < 0)
+ return err;
+ pcm->streams[stream].chmap_kctl = info->kctl;
+ if (info_ret)
+ *info_ret = info;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_pcm_add_chmap_ctls);
diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c
index 957131366dd9..69e01c4fc32d 100644
--- a/sound/core/pcm_memory.c
+++ b/sound/core/pcm_memory.c
@@ -327,32 +327,6 @@ struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigne
}
EXPORT_SYMBOL(snd_pcm_sgbuf_ops_page);
-
-/*
- * compute the max chunk size with continuous pages on sg-buffer
- */
-unsigned int snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
- unsigned int ofs, unsigned int size)
-{
- struct snd_sg_buf *sg = snd_pcm_substream_sgbuf(substream);
- unsigned int start, end, pg;
-
- start = ofs >> PAGE_SHIFT;
- end = (ofs + size - 1) >> PAGE_SHIFT;
- /* check page continuity */
- pg = sg->table[start].addr >> PAGE_SHIFT;
- for (;;) {
- start++;
- if (start > end)
- break;
- pg++;
- if ((sg->table[start].addr >> PAGE_SHIFT) != pg)
- return (start << PAGE_SHIFT) - ofs;
- }
- /* ok, all on continuous pages */
- return size;
-}
-EXPORT_SYMBOL(snd_pcm_sgbuf_get_chunk_size);
#endif /* CONFIG_SND_DMA_SGBUF */
/**
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 53b5ada8f7c3..5e12e5bacbba 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1563,25 +1563,25 @@ static int snd_pcm_drop(struct snd_pcm_substream *substream)
/* WARNING: Don't forget to fput back the file */
-static struct file *snd_pcm_file_fd(int fd)
+static struct file *snd_pcm_file_fd(int fd, int *fput_needed)
{
struct file *file;
struct inode *inode;
unsigned int minor;
- file = fget(fd);
+ file = fget_light(fd, fput_needed);
if (!file)
return NULL;
inode = file->f_path.dentry->d_inode;
if (!S_ISCHR(inode->i_mode) ||
imajor(inode) != snd_major) {
- fput(file);
+ fput_light(file, *fput_needed);
return NULL;
}
minor = iminor(inode);
if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) &&
!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) {
- fput(file);
+ fput_light(file, *fput_needed);
return NULL;
}
return file;
@@ -1597,8 +1597,9 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd)
struct snd_pcm_file *pcm_file;
struct snd_pcm_substream *substream1;
struct snd_pcm_group *group;
+ int fput_needed;
- file = snd_pcm_file_fd(fd);
+ file = snd_pcm_file_fd(fd, &fput_needed);
if (!file)
return -EBADFD;
pcm_file = file->private_data;
@@ -1633,7 +1634,7 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd)
write_unlock_irq(&snd_pcm_link_rwlock);
up_write(&snd_pcm_link_rwsem);
_nolock:
- fput(file);
+ fput_light(file, fput_needed);
if (res < 0)
kfree(group);
return res;
@@ -3038,7 +3039,7 @@ static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file
return -EINVAL;
area->vm_ops = &snd_pcm_vm_ops_status;
area->vm_private_data = substream;
- area->vm_flags |= VM_RESERVED;
+ area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
return 0;
}
@@ -3075,7 +3076,7 @@ static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file
return -EINVAL;
area->vm_ops = &snd_pcm_vm_ops_control;
area->vm_private_data = substream;
- area->vm_flags |= VM_RESERVED;
+ area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
return 0;
}
#else /* ! coherent mmap */
@@ -3169,7 +3170,7 @@ static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = {
int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
struct vm_area_struct *area)
{
- area->vm_flags |= VM_RESERVED;
+ area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
#ifdef ARCH_HAS_DMA_MMAP_COHERENT
if (!substream->ops->page &&
substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
diff --git a/sound/core/seq/seq_device.c b/sound/core/seq/seq_device.c
index 5cf8d65ed5ef..60e8fc1b3440 100644
--- a/sound/core/seq/seq_device.c
+++ b/sound/core/seq/seq_device.c
@@ -569,5 +569,7 @@ EXPORT_SYMBOL(snd_seq_device_load_drivers);
EXPORT_SYMBOL(snd_seq_device_new);
EXPORT_SYMBOL(snd_seq_device_register_driver);
EXPORT_SYMBOL(snd_seq_device_unregister_driver);
+#ifdef CONFIG_MODULES
EXPORT_SYMBOL(snd_seq_autoload_lock);
EXPORT_SYMBOL(snd_seq_autoload_unlock);
+#endif
diff --git a/sound/core/sgbuf.c b/sound/core/sgbuf.c
index d0f00356fc11..0a418503ec41 100644
--- a/sound/core/sgbuf.c
+++ b/sound/core/sgbuf.c
@@ -22,6 +22,7 @@
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
+#include <linux/export.h>
#include <sound/memalloc.h>
@@ -136,3 +137,29 @@ void *snd_malloc_sgbuf_pages(struct device *device,
snd_free_sgbuf_pages(dmab); /* free the table */
return NULL;
}
+
+/*
+ * compute the max chunk size with continuous pages on sg-buffer
+ */
+unsigned int snd_sgbuf_get_chunk_size(struct snd_dma_buffer *dmab,
+ unsigned int ofs, unsigned int size)
+{
+ struct snd_sg_buf *sg = dmab->private_data;
+ unsigned int start, end, pg;
+
+ start = ofs >> PAGE_SHIFT;
+ end = (ofs + size - 1) >> PAGE_SHIFT;
+ /* check page continuity */
+ pg = sg->table[start].addr >> PAGE_SHIFT;
+ for (;;) {
+ start++;
+ if (start > end)
+ break;
+ pg++;
+ if ((sg->table[start].addr >> PAGE_SHIFT) != pg)
+ return (start << PAGE_SHIFT) - ofs;
+ }
+ /* ok, all on continuous pages */
+ return size;
+}
+EXPORT_SYMBOL(snd_sgbuf_get_chunk_size);
diff --git a/sound/core/sound.c b/sound/core/sound.c
index 28f35593a750..643976000ce8 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -27,7 +27,6 @@
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/info.h>
-#include <sound/version.h>
#include <sound/control.h>
#include <sound/initval.h>
#include <linux/kmod.h>
@@ -468,7 +467,7 @@ static int __init alsa_sound_init(void)
}
snd_info_minor_register();
#ifndef MODULE
- printk(KERN_INFO "Advanced Linux Sound Architecture Driver Version " CONFIG_SND_VERSION CONFIG_SND_DATE ".\n");
+ printk(KERN_INFO "Advanced Linux Sound Architecture Driver Initialized.\n");
#endif
return 0;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 16:28:52 +0300