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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 19:52:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 19:52:22 -0700
commit1286da8bc009cb2aee7f285e94623fc974c0c983 (patch)
tree51ec0a79c3de63fa809b831ae0cbb5b85e44482f /sound/core
parent9e220385c4eb8b7e66174a60ea0e15b6b296f228 (diff)
parent1ba65ae4bdbd43265c51ee4c30ff21a48124b6d8 (diff)
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Merge tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai: "A relative calm release at this time with a flat diffstat. The only significant change in the ALSA core side is the support for more than 32 card instances, configurable via kconfig. Other than that, in both ASoC and other parts, mostly some improvements and fixes on the driver side. - hda: More quirks for ALC269-variants on Dell & co, VIA codec fixes - hda: Haswell HDMI audio fixes, runtime PM improvements - hda: Intel BayTrail support, ALC5505 DSP support - es1968: MediaForte M56VAP support - usb-audio: Improved support for Yamaha/Roland devices - usb-audio: M2Tech hiFace, Audio Advantage Micro II support - hdspm: wordclock fixes - ASoC: Pending fixes for WM8962 - ASoC: Cleanups and fixes for Blackfin, SGTL5000 and UX500 - ASoC: Generalisation of the Bluetooth and HDMI stub drivers - ASoC: SSM2518 and RT5640 codec drivers. - ASoC: Tegra CPUs with RT5640 machine driver - ASoC: AC'97 refactoring bug fixes - ASoC: ADAU1701 driver fixes - Clean up of *_set_drvdata() in a wide range of drivers" * tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (284 commits) ALSA: vmaster: Fix the regression of missing vmaster hook call ALSA: hda - Add Dell SSID to support Headset Mic recording ASoC: adau1701: remove control_data assignment ASoC: adau1701: more direct regmap usage ASoC: ac97: fixup multi-platform AC'97 module build failure ASoC: pxa2xx: fixup multi-platform AC'97 build failures ASoC: tegra20-ac97: Remove unused variable ASoC: tegra20-ac97: Remove duplicate error message ALSA: usb-audio: Add Audio Advantage Micro II ASoC: tas5086: fix Mid-Z implementation ASoC: tas5086: fix TAS5086_CLOCK_CONTROL register size ALSA: Replace the magic number 44 with const ALSA: hda - Fix the max length of control name in generic parser ALSA: hda - Guess what, it's two more Dell headset mic quirks ALSA: hda - Yet another Dell headset mic quirk ALSA: hda - Add support for ALC5505 DSP power-save mode ASoC: mfld: Remove unused variable ALSA: usb-audio: add quirks for Roland QUAD/OCTO-CAPTURE ALSA: usb-audio: claim autodetected PCM interfaces all at once ALSA: usb-audio: remove superfluous Roland quirks ...
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/Kconfig9
-rw-r--r--sound/core/init.c55
-rw-r--r--sound/core/pcm_lib.c3
-rw-r--r--sound/core/vmaster.c65
4 files changed, 85 insertions, 47 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index b413ed0..c0c2f57 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -157,6 +157,15 @@ config SND_DYNAMIC_MINORS
If you are unsure about this, say N here.
+config SND_MAX_CARDS
+ int "Max number of sound cards"
+ range 4 256
+ default 32
+ depends on SND_DYNAMIC_MINORS
+ help
+ Specify the max number of sound cards that can be assigned
+ on a single machine.
+
config SND_SUPPORT_OLD_API
bool "Support old ALSA API"
default y
diff --git a/sound/core/init.c b/sound/core/init.c
index 6ef0640..6b90871 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -46,7 +46,8 @@ static LIST_HEAD(shutdown_files);
static const struct file_operations snd_shutdown_f_ops;
-static unsigned int snd_cards_lock; /* locked for registering/using */
+/* locked for registering/using */
+static DECLARE_BITMAP(snd_cards_lock, SNDRV_CARDS);
struct snd_card *snd_cards[SNDRV_CARDS];
EXPORT_SYMBOL(snd_cards);
@@ -167,29 +168,35 @@ int snd_card_create(int idx, const char *xid,
err = 0;
mutex_lock(&snd_card_mutex);
if (idx < 0) {
- for (idx2 = 0; idx2 < SNDRV_CARDS; idx2++)
+ for (idx2 = 0; idx2 < SNDRV_CARDS; idx2++) {
/* idx == -1 == 0xffff means: take any free slot */
- if (~snd_cards_lock & idx & 1<<idx2) {
+ if (idx2 < sizeof(int) && !(idx & (1U << idx2)))
+ continue;
+ if (!test_bit(idx2, snd_cards_lock)) {
if (module_slot_match(module, idx2)) {
idx = idx2;
break;
}
}
+ }
}
if (idx < 0) {
- for (idx2 = 0; idx2 < SNDRV_CARDS; idx2++)
+ for (idx2 = 0; idx2 < SNDRV_CARDS; idx2++) {
/* idx == -1 == 0xffff means: take any free slot */
- if (~snd_cards_lock & idx & 1<<idx2) {
+ if (idx2 < sizeof(int) && !(idx & (1U << idx2)))
+ continue;
+ if (!test_bit(idx2, snd_cards_lock)) {
if (!slots[idx2] || !*slots[idx2]) {
idx = idx2;
break;
}
}
+ }
}
if (idx < 0)
err = -ENODEV;
else if (idx < snd_ecards_limit) {
- if (snd_cards_lock & (1 << idx))
+ if (test_bit(idx, snd_cards_lock))
err = -EBUSY; /* invalid */
} else if (idx >= SNDRV_CARDS)
err = -ENODEV;
@@ -199,7 +206,7 @@ int snd_card_create(int idx, const char *xid,
idx, snd_ecards_limit - 1, err);
goto __error;
}
- snd_cards_lock |= 1 << idx; /* lock it */
+ set_bit(idx, snd_cards_lock); /* lock it */
if (idx >= snd_ecards_limit)
snd_ecards_limit = idx + 1; /* increase the limit */
mutex_unlock(&snd_card_mutex);
@@ -249,7 +256,7 @@ int snd_card_locked(int card)
int locked;
mutex_lock(&snd_card_mutex);
- locked = snd_cards_lock & (1 << card);
+ locked = test_bit(card, snd_cards_lock);
mutex_unlock(&snd_card_mutex);
return locked;
}
@@ -361,7 +368,7 @@ int snd_card_disconnect(struct snd_card *card)
/* phase 1: disable fops (user space) operations for ALSA API */
mutex_lock(&snd_card_mutex);
snd_cards[card->number] = NULL;
- snd_cards_lock &= ~(1 << card->number);
+ clear_bit(card->number, snd_cards_lock);
mutex_unlock(&snd_card_mutex);
/* phase 2: replace file->f_op with special dummy operations */
@@ -549,7 +556,6 @@ static void snd_card_set_id_no_lock(struct snd_card *card, const char *src,
const char *nid)
{
int len, loops;
- bool with_suffix;
bool is_default = false;
char *id;
@@ -565,26 +571,23 @@ static void snd_card_set_id_no_lock(struct snd_card *card, const char *src,
is_default = true;
}
- with_suffix = false;
+ len = strlen(id);
for (loops = 0; loops < SNDRV_CARDS; loops++) {
+ char *spos;
+ char sfxstr[5]; /* "_012" */
+ int sfxlen;
+
if (card_id_ok(card, id))
return; /* OK */
- len = strlen(id);
- if (!with_suffix) {
- /* add the "_X" suffix */
- char *spos = id + len;
- if (len > sizeof(card->id) - 3)
- spos = id + sizeof(card->id) - 3;
- strcpy(spos, "_1");
- with_suffix = true;
- } else {
- /* modify the existing suffix */
- if (id[len - 1] != '9')
- id[len - 1]++;
- else
- id[len - 1] = 'A';
- }
+ /* Add _XYZ suffix */
+ sprintf(sfxstr, "_%X", loops + 1);
+ sfxlen = strlen(sfxstr);
+ if (len + sfxlen >= sizeof(card->id))
+ spos = id + sizeof(card->id) - sfxlen - 1;
+ else
+ spos = id + len;
+ strcpy(spos, sfxstr);
}
/* fallback to the default id */
if (!is_default) {
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 41b3dfe..82bb029 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -568,7 +568,8 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
*
* Sets the given PCM operators to the pcm instance.
*/
-void snd_pcm_set_ops(struct snd_pcm *pcm, int direction, struct snd_pcm_ops *ops)
+void snd_pcm_set_ops(struct snd_pcm *pcm, int direction,
+ const struct snd_pcm_ops *ops)
{
struct snd_pcm_str *stream = &pcm->streams[direction];
struct snd_pcm_substream *substream;
diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c
index 02f90b4..842a97d 100644
--- a/sound/core/vmaster.c
+++ b/sound/core/vmaster.c
@@ -310,20 +310,10 @@ static int master_get(struct snd_kcontrol *kcontrol,
return 0;
}
-static int master_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+static int sync_slaves(struct link_master *master, int old_val, int new_val)
{
- struct link_master *master = snd_kcontrol_chip(kcontrol);
struct link_slave *slave;
struct snd_ctl_elem_value *uval;
- int err, old_val;
-
- err = master_init(master);
- if (err < 0)
- return err;
- old_val = master->val;
- if (ucontrol->value.integer.value[0] == old_val)
- return 0;
uval = kmalloc(sizeof(*uval), GFP_KERNEL);
if (!uval)
@@ -332,11 +322,33 @@ static int master_put(struct snd_kcontrol *kcontrol,
master->val = old_val;
uval->id = slave->slave.id;
slave_get_val(slave, uval);
- master->val = ucontrol->value.integer.value[0];
+ master->val = new_val;
slave_put_val(slave, uval);
}
kfree(uval);
- if (master->hook && !err)
+ return 0;
+}
+
+static int master_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct link_master *master = snd_kcontrol_chip(kcontrol);
+ int err, new_val, old_val;
+ bool first_init;
+
+ err = master_init(master);
+ if (err < 0)
+ return err;
+ first_init = err;
+ old_val = master->val;
+ new_val = ucontrol->value.integer.value[0];
+ if (new_val == old_val)
+ return 0;
+
+ err = sync_slaves(master, old_val, new_val);
+ if (err < 0)
+ return err;
+ if (master->hook && !first_init)
master->hook(master->hook_private_data, master->val);
return 1;
}
@@ -442,20 +454,33 @@ int snd_ctl_add_vmaster_hook(struct snd_kcontrol *kcontrol,
EXPORT_SYMBOL_GPL(snd_ctl_add_vmaster_hook);
/**
- * snd_ctl_sync_vmaster_hook - Sync the vmaster hook
+ * snd_ctl_sync_vmaster - Sync the vmaster slaves and hook
* @kcontrol: vmaster kctl element
+ * @hook_only: sync only the hook
*
- * Call the hook function to synchronize with the current value of the given
- * vmaster element. NOP when NULL is passed to @kcontrol or the hook doesn't
- * exist.
+ * Forcibly call the put callback of each slave and call the hook function
+ * to synchronize with the current value of the given vmaster element.
+ * NOP when NULL is passed to @kcontrol.
*/
-void snd_ctl_sync_vmaster_hook(struct snd_kcontrol *kcontrol)
+void snd_ctl_sync_vmaster(struct snd_kcontrol *kcontrol, bool hook_only)
{
struct link_master *master;
+ bool first_init = false;
+
if (!kcontrol)
return;
master = snd_kcontrol_chip(kcontrol);
- if (master->hook)
+ if (!hook_only) {
+ int err = master_init(master);
+ if (err < 0)
+ return;
+ first_init = err;
+ err = sync_slaves(master, master->val, master->val);
+ if (err < 0)
+ return;
+ }
+
+ if (master->hook && !first_init)
master->hook(master->hook_private_data, master->val);
}
-EXPORT_SYMBOL_GPL(snd_ctl_sync_vmaster_hook);
+EXPORT_SYMBOL_GPL(snd_ctl_sync_vmaster);