From: Clemens Ladisch Date: Sun, 20 Nov 2005 13:03:48 +0000 (+0100) Subject: [ALSA] dynamic minors (1/6): store device type in struct snd_minor X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2af677fc884fc6dc79e65c99050ea607ac8bab9b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [ALSA] dynamic minors (1/6): store device type in struct snd_minor Instead of a comment string, store the device type in the snd_minor structure. This makes snd_minor more flexible, and has the nice side effect that we don't need anymore to create a separate snd_minor template for registering a device but can pass the file_operations directly to snd_register_device(). Signed-off-by: Clemens Ladisch --- diff --git a/include/sound/core.h b/include/sound/core.h index f00b9c9b567f..f557c8ac450e 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -185,8 +185,8 @@ static inline int snd_power_wait(struct snd_card *card, unsigned int state, stru struct snd_minor { struct list_head list; /* list of all minors per card */ int number; /* minor number */ + int type; /* SNDRV_DEVICE_TYPE_XXX */ int device; /* device number */ - const char *comment; /* for /proc/asound/devices */ struct file_operations *f_ops; /* file operations */ char name[0]; /* device name (keep at the end of structure) */ @@ -199,11 +199,13 @@ extern int snd_ecards_limit; void snd_request_card(int card); -int snd_register_device(int type, struct snd_card *card, int dev, struct snd_minor *reg, const char *name); +int snd_register_device(int type, struct snd_card *card, int dev, + struct file_operations *f_ops, const char *name); int snd_unregister_device(int type, struct snd_card *card, int dev); #ifdef CONFIG_SND_OSSEMUL -int snd_register_oss_device(int type, struct snd_card *card, int dev, struct snd_minor *reg, const char *name); +int snd_register_oss_device(int type, struct snd_card *card, int dev, + struct file_operations *f_ops, const char *name); int snd_unregister_oss_device(int type, struct snd_card *card, int dev); #endif diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 7e77c0add80a..5e29b0e0f214 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -402,7 +402,6 @@ struct snd_pcm_str { struct snd_pcm_oss_stream oss; #endif struct snd_pcm_file *files; - struct snd_minor *reg; struct snd_info_entry *proc_root; struct snd_info_entry *proc_info_entry; #ifdef CONFIG_SND_DEBUG @@ -441,7 +440,7 @@ struct snd_pcm_notify { */ extern struct snd_pcm *snd_pcm_devices[]; -extern struct snd_minor snd_pcm_reg[2]; +extern struct file_operations snd_pcm_f_ops[2]; int snd_pcm_new(struct snd_card *card, char *id, int device, int playback_count, int capture_count, diff --git a/sound/core/control.c b/sound/core/control.c index f8f98cc52417..23561e74712b 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -1264,12 +1264,6 @@ static struct file_operations snd_ctl_f_ops = .fasync = snd_ctl_fasync, }; -static struct snd_minor snd_ctl_reg = -{ - .comment = "ctl", - .f_ops = &snd_ctl_f_ops, -}; - /* * registration of the control device */ @@ -1284,7 +1278,7 @@ static int snd_ctl_dev_register(struct snd_device *device) snd_assert(cardnum >= 0 && cardnum < SNDRV_CARDS, return -ENXIO); sprintf(name, "controlC%i", cardnum); if ((err = snd_register_device(SNDRV_DEVICE_TYPE_CONTROL, - card, 0, &snd_ctl_reg, name)) < 0) + card, -1, &snd_ctl_f_ops, name)) < 0) return err; return 0; } @@ -1336,7 +1330,8 @@ static int snd_ctl_dev_unregister(struct snd_device *device) snd_assert(card != NULL, return -ENXIO); cardnum = card->number; snd_assert(cardnum >= 0 && cardnum < SNDRV_CARDS, return -ENXIO); - if ((err = snd_unregister_device(SNDRV_DEVICE_TYPE_CONTROL, card, 0)) < 0) + if ((err = snd_unregister_device(SNDRV_DEVICE_TYPE_CONTROL, + card, -1)) < 0) return err; return snd_ctl_dev_free(device); } diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c index 444e266e7c48..27d5bf7266f0 100644 --- a/sound/core/hwdep.c +++ b/sound/core/hwdep.c @@ -330,12 +330,6 @@ static struct file_operations snd_hwdep_f_ops = .mmap = snd_hwdep_mmap, }; -static struct snd_minor snd_hwdep_reg = -{ - .comment = "hardware dependent", - .f_ops = &snd_hwdep_f_ops, -}; - /** * snd_hwdep_new - create a new hwdep instance * @card: the card instance @@ -416,7 +410,7 @@ static int snd_hwdep_dev_register(struct snd_device *device) sprintf(name, "hwC%iD%i", hwdep->card->number, hwdep->device); if ((err = snd_register_device(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card, hwdep->device, - &snd_hwdep_reg, name)) < 0) { + &snd_hwdep_f_ops, name)) < 0) { snd_printk(KERN_ERR "unable to register hardware dependent device %i:%i\n", hwdep->card->number, hwdep->device); snd_hwdep_devices[idx] = NULL; @@ -431,7 +425,8 @@ static int snd_hwdep_dev_register(struct snd_device *device) } else { if (snd_register_oss_device(hwdep->oss_type, hwdep->card, hwdep->device, - &snd_hwdep_reg, hwdep->oss_dev) < 0) { + &snd_hwdep_f_ops, + hwdep->oss_dev) < 0) { snd_printk(KERN_ERR "unable to register OSS compatibility device %i:%i\n", hwdep->card->number, hwdep->device); } else diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index e448002ca7b9..2dd6bf9b49ed 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -398,12 +398,6 @@ static struct file_operations snd_mixer_oss_f_ops = .compat_ioctl = snd_mixer_oss_ioctl_compat, }; -static struct snd_minor snd_mixer_oss_reg = -{ - .comment = "mixer", - .f_ops = &snd_mixer_oss_f_ops, -}; - /* * utilities */ @@ -1292,7 +1286,7 @@ static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd) sprintf(name, "mixer%i%i", card->number, 0); if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, card, 0, - &snd_mixer_oss_reg, + &snd_mixer_oss_f_ops, name)) < 0) { snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n", card->number, 0); diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index ffc13b9194b7..947bf08df42a 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -2444,18 +2444,12 @@ static struct file_operations snd_pcm_oss_f_reg = .mmap = snd_pcm_oss_mmap, }; -static struct snd_minor snd_pcm_oss_reg = -{ - .comment = "digital audio", - .f_ops = &snd_pcm_oss_f_reg, -}; - static void register_oss_dsp(struct snd_pcm *pcm, int index) { char name[128]; sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, - pcm->card, index, &snd_pcm_oss_reg, + pcm->card, index, &snd_pcm_oss_f_reg, name) < 0) { snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", pcm->card->number, pcm->device); diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 9305ac357a3e..2bc5f69ec2a8 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -597,7 +597,6 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) pstr->stream = stream; pstr->pcm = pcm; pstr->substream_count = substream_count; - pstr->reg = &snd_pcm_reg[stream]; if (substream_count > 0) { err = snd_pcm_stream_proc_init(pstr); if (err < 0) { @@ -897,7 +896,10 @@ static int snd_pcm_dev_register(struct snd_device *device) devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE; break; } - if ((err = snd_register_device(devtype, pcm->card, pcm->device, pcm->streams[cidx].reg, str)) < 0) { + if ((err = snd_register_device(devtype, pcm->card, + pcm->device, + &snd_pcm_f_ops[cidx], str)) < 0) + { snd_pcm_devices[idx] = NULL; up(®ister_mutex); return err; diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 7bac1cbe38da..bb40c016135e 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3370,40 +3370,29 @@ out: * Register section */ -static struct file_operations snd_pcm_f_ops_playback = { - .owner = THIS_MODULE, - .write = snd_pcm_write, - .writev = snd_pcm_writev, - .open = snd_pcm_open, - .release = snd_pcm_release, - .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, -}; - -static struct file_operations snd_pcm_f_ops_capture = { - .owner = THIS_MODULE, - .read = snd_pcm_read, - .readv = snd_pcm_readv, - .open = snd_pcm_open, - .release = snd_pcm_release, - .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, -}; - -struct snd_minor snd_pcm_reg[2] = -{ +struct file_operations snd_pcm_f_ops[2] = { { - .comment = "digital audio playback", - .f_ops = &snd_pcm_f_ops_playback, + .owner = THIS_MODULE, + .write = snd_pcm_write, + .writev = snd_pcm_writev, + .open = snd_pcm_open, + .release = snd_pcm_release, + .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, }, { - .comment = "digital audio capture", - .f_ops = &snd_pcm_f_ops_capture, + .owner = THIS_MODULE, + .read = snd_pcm_read, + .readv = snd_pcm_readv, + .open = snd_pcm_open, + .release = snd_pcm_release, + .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, } }; diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index d703545cae8a..7ac77e5ddcb1 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -1367,12 +1367,6 @@ static struct file_operations snd_rawmidi_f_ops = .compat_ioctl = snd_rawmidi_ioctl_compat, }; -static struct snd_minor snd_rawmidi_reg = -{ - .comment = "raw midi", - .f_ops = &snd_rawmidi_f_ops, -}; - static int snd_rawmidi_alloc_substreams(struct snd_rawmidi *rmidi, struct snd_rawmidi_str *stream, int direction, @@ -1516,7 +1510,7 @@ static int snd_rawmidi_dev_register(struct snd_device *device) sprintf(name, "midiC%iD%i", rmidi->card->number, rmidi->device); if ((err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device, - &snd_rawmidi_reg, name)) < 0) { + &snd_rawmidi_f_ops, name)) < 0) { snd_printk(KERN_ERR "unable to register rawmidi device %i:%i\n", rmidi->card->number, rmidi->device); snd_rawmidi_devices[idx] = NULL; up(®ister_mutex); @@ -1533,7 +1527,8 @@ static int snd_rawmidi_dev_register(struct snd_device *device) rmidi->ossreg = 0; if ((int)rmidi->device == midi_map[rmidi->card->number]) { if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, - rmidi->card, 0, &snd_rawmidi_reg, name) < 0) { + rmidi->card, 0, + &snd_rawmidi_f_ops, name) < 0) { snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 0); } else { rmidi->ossreg++; @@ -1544,7 +1539,8 @@ static int snd_rawmidi_dev_register(struct snd_device *device) } if ((int)rmidi->device == amidi_map[rmidi->card->number]) { if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIDI, - rmidi->card, 1, &snd_rawmidi_reg, name) < 0) { + rmidi->card, 1, + &snd_rawmidi_f_ops, name) < 0) { snd_printk(KERN_ERR "unable to register OSS rawmidi device %i:%i\n", rmidi->card->number, 1); } else { rmidi->ossreg++; diff --git a/sound/core/seq/oss/seq_oss.c b/sound/core/seq/oss/seq_oss.c index 2371e41b13ef..61c0a41376fd 100644 --- a/sound/core/seq/oss/seq_oss.c +++ b/sound/core/seq/oss/seq_oss.c @@ -217,11 +217,6 @@ static struct file_operations seq_oss_f_ops = .compat_ioctl = odev_ioctl_compat, }; -static struct snd_minor seq_oss_reg = { - .comment = "sequencer", - .f_ops = &seq_oss_f_ops, -}; - static int __init register_device(void) { @@ -230,7 +225,7 @@ register_device(void) down(®ister_mutex); if ((rc = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_SEQUENCER, NULL, 0, - &seq_oss_reg, + &seq_oss_f_ops, SNDRV_SEQ_OSS_DEVNAME)) < 0) { snd_printk(KERN_ERR "can't register device seq\n"); up(®ister_mutex); @@ -238,7 +233,7 @@ register_device(void) } if ((rc = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MUSIC, NULL, 0, - &seq_oss_reg, + &seq_oss_f_ops, SNDRV_SEQ_OSS_DEVNAME)) < 0) { snd_printk(KERN_ERR "can't register device music\n"); snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_SEQUENCER, NULL, 0); diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 5eab4201c640..087fdf32732b 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -2520,13 +2520,6 @@ static struct file_operations snd_seq_f_ops = .compat_ioctl = snd_seq_ioctl_compat, }; -static struct snd_minor snd_seq_reg = -{ - .comment = "sequencer", - .f_ops = &snd_seq_f_ops, -}; - - /* * register sequencer device */ @@ -2537,7 +2530,8 @@ int __init snd_sequencer_device_init(void) if (down_interruptible(®ister_mutex)) return -ERESTARTSYS; - if ((err = snd_register_device(SNDRV_DEVICE_TYPE_SEQUENCER, NULL, 0, &snd_seq_reg, "seq")) < 0) { + if ((err = snd_register_device(SNDRV_DEVICE_TYPE_SEQUENCER, NULL, 0, + &snd_seq_f_ops, "seq")) < 0) { up(®ister_mutex); return err; } diff --git a/sound/core/sound.c b/sound/core/sound.c index fb236a6b9c34..798c24c2de20 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -195,7 +195,7 @@ static int snd_kernel_minor(int type, struct snd_card *card, int dev) * @type: the device type, SNDRV_DEVICE_TYPE_XXX * @card: the card instance * @dev: the device index - * @reg: the struct snd_minor record + * @f_ops: the file operations * @name: the device file name * * Registers an ALSA device file for the given card. @@ -203,7 +203,8 @@ static int snd_kernel_minor(int type, struct snd_card *card, int dev) * * Retrurns zero if successful, or a negative error code on failure. */ -int snd_register_device(int type, struct snd_card *card, int dev, struct snd_minor * reg, const char *name) +int snd_register_device(int type, struct snd_card *card, int dev, + struct file_operations *f_ops, const char *name) { int minor = snd_kernel_minor(type, card, dev); struct snd_minor *preg; @@ -212,12 +213,13 @@ int snd_register_device(int type, struct snd_card *card, int dev, struct snd_min if (minor < 0) return minor; snd_assert(name, return -EINVAL); - preg = kmalloc(sizeof(struct snd_minor) + strlen(name) + 1, GFP_KERNEL); + preg = kzalloc(sizeof(struct snd_minor) + strlen(name) + 1, GFP_KERNEL); if (preg == NULL) return -ENOMEM; - *preg = *reg; preg->number = minor; + preg->type = type; preg->device = dev; + preg->f_ops = f_ops; strcpy(preg->name, name); down(&sound_mutex); if (snd_minor_search(minor)) { @@ -276,6 +278,28 @@ int snd_unregister_device(int type, struct snd_card *card, int dev) static struct snd_info_entry *snd_minor_info_entry = NULL; +static const char *snd_device_type_name(int type) +{ + switch (type) { + case SNDRV_DEVICE_TYPE_CONTROL: + return "control"; + case SNDRV_DEVICE_TYPE_HWDEP: + return "hardware dependent"; + case SNDRV_DEVICE_TYPE_RAWMIDI: + return "raw midi"; + case SNDRV_DEVICE_TYPE_PCM_PLAYBACK: + return "digital audio playback"; + case SNDRV_DEVICE_TYPE_PCM_CAPTURE: + return "digital audio capture"; + case SNDRV_DEVICE_TYPE_SEQUENCER: + return "sequencer"; + case SNDRV_DEVICE_TYPE_TIMER: + return "timer"; + default: + return "?"; + } +} + static void snd_minor_info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { int card, device; @@ -288,11 +312,11 @@ static void snd_minor_info_read(struct snd_info_entry *entry, struct snd_info_bu mptr = list_entry(list, struct snd_minor, list); if (SNDRV_MINOR_DEVICE(mptr->number) != SNDRV_MINOR_GLOBAL) { if ((device = mptr->device) >= 0) - snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, device, mptr->comment); + snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, device, snd_device_type_name(mptr->type)); else - snd_iprintf(buffer, "%3i: [%i] : %s\n", mptr->number, card, mptr->comment); + snd_iprintf(buffer, "%3i: [%i] : %s\n", mptr->number, card, snd_device_type_name(mptr->type)); } else { - snd_iprintf(buffer, "%3i: : %s\n", mptr->number, mptr->comment); + snd_iprintf(buffer, "%3i: : %s\n", mptr->number, snd_device_type_name(mptr->type)); } } } diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c index ec37604ffb68..4d189ffaa764 100644 --- a/sound/core/sound_oss.c +++ b/sound/core/sound_oss.c @@ -91,7 +91,7 @@ static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev) } int snd_register_oss_device(int type, struct snd_card *card, int dev, - struct snd_minor * reg, const char *name) + struct file_operations *f_ops, const char *name) { int minor = snd_oss_kernel_minor(type, card, dev); int minor_unit; @@ -103,12 +103,13 @@ int snd_register_oss_device(int type, struct snd_card *card, int dev, if (minor < 0) return minor; - preg = (struct snd_minor *)kmalloc(sizeof(struct snd_minor), GFP_KERNEL); + preg = kzalloc(sizeof(struct snd_minor), GFP_KERNEL); if (preg == NULL) return -ENOMEM; - *preg = *reg; preg->number = minor; + preg->type = type; preg->device = dev; + preg->f_ops = f_ops; down(&sound_oss_mutex); list_add_tail(&preg->list, &snd_oss_minors_hash[cidx]); minor_unit = SNDRV_MINOR_OSS_DEVICE(minor); @@ -125,11 +126,12 @@ int snd_register_oss_device(int type, struct snd_card *card, int dev, } if (card) carddev = card->dev; - register1 = register_sound_special_device(reg->f_ops, minor, carddev); + register1 = register_sound_special_device(f_ops, minor, carddev); if (register1 != minor) goto __end; if (track2 >= 0) { - register2 = register_sound_special_device(reg->f_ops, track2, carddev); + register2 = register_sound_special_device(f_ops, track2, + carddev); if (register2 != track2) goto __end; } @@ -190,6 +192,25 @@ int snd_unregister_oss_device(int type, struct snd_card *card, int dev) static struct snd_info_entry *snd_minor_info_oss_entry = NULL; +static const char *snd_oss_device_type_name(int type) +{ + switch (type) { + case SNDRV_OSS_DEVICE_TYPE_MIXER: + return "mixer"; + case SNDRV_OSS_DEVICE_TYPE_SEQUENCER: + case SNDRV_OSS_DEVICE_TYPE_MUSIC: + return "sequencer"; + case SNDRV_OSS_DEVICE_TYPE_PCM: + return "digital audio"; + case SNDRV_OSS_DEVICE_TYPE_MIDI: + return "raw midi"; + case SNDRV_OSS_DEVICE_TYPE_DMFM: + return "hardware dependent"; + default: + return "?"; + } +} + static void snd_minor_info_oss_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { @@ -205,9 +226,9 @@ static void snd_minor_info_oss_read(struct snd_info_entry *entry, if (dev != SNDRV_MINOR_OSS_SNDSTAT && dev != SNDRV_MINOR_OSS_SEQUENCER && dev != SNDRV_MINOR_OSS_MUSIC) - snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, dev, mptr->comment); + snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", mptr->number, card, dev, snd_oss_device_type_name(mptr->type)); else - snd_iprintf(buffer, "%3i: : %s\n", mptr->number, mptr->comment); + snd_iprintf(buffer, "%3i: : %s\n", mptr->number, snd_oss_device_type_name(mptr->type)); } } up(&sound_oss_mutex); diff --git a/sound/core/timer.c b/sound/core/timer.c index 6aad411dd7b8..a7bcb04263cb 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -1924,12 +1924,6 @@ static struct file_operations snd_timer_f_ops = .fasync = snd_timer_user_fasync, }; -static struct snd_minor snd_timer_reg = -{ - .comment = "timer", - .f_ops = &snd_timer_f_ops, -}; - /* * ENTRY functions */ @@ -1959,7 +1953,7 @@ static int __init alsa_timer_init(void) snd_printk(KERN_ERR "unable to register system timer (%i)\n", err); if ((err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER, - NULL, 0, &snd_timer_reg, "timer"))<0) + NULL, 0, &snd_timer_f_ops, "timer")) < 0) snd_printk(KERN_ERR "unable to register timer device (%i)\n", err); return 0;