Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * tascam-hwdep.c - a part of driver for TASCAM FireWire series
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2015 Takashi Sakamoto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * This codes give three functionality.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * 1.get firewire node information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * 2.get notification about starting/stopping stream
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * 3.lock/unlock stream
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include "tascam.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) static long tscm_hwdep_read_locked(struct snd_tscm *tscm, char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 				   long count, loff_t *offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	__releases(&tscm->lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	struct snd_firewire_event_lock_status event = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 		.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	event.status = (tscm->dev_lock_count > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	tscm->dev_lock_changed = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	count = min_t(long, count, sizeof(event));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	if (copy_to_user(buf, &event, count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static long tscm_hwdep_read_queue(struct snd_tscm *tscm, char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 				  long remained, loff_t *offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	__releases(&tscm->lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	char __user *pos = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	unsigned int type = SNDRV_FIREWIRE_EVENT_TASCAM_CONTROL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	struct snd_firewire_tascam_change *entries = tscm->queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	long count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	// At least, one control event can be copied.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	if (remained < sizeof(type) + sizeof(*entries)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	// Copy the type field later.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	count = sizeof(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	remained -= sizeof(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	pos += sizeof(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		unsigned int head_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		unsigned int tail_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		unsigned int length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		if (tscm->pull_pos == tscm->push_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		else if (tscm->pull_pos < tscm->push_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 			tail_pos = tscm->push_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			tail_pos = SND_TSCM_QUEUE_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		head_pos = tscm->pull_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		length = (tail_pos - head_pos) * sizeof(*entries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		if (remained < length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			length = rounddown(remained, sizeof(*entries));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		if (length == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		if (copy_to_user(pos, &entries[head_pos], length))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		spin_lock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		tscm->pull_pos = tail_pos % SND_TSCM_QUEUE_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		count += length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		remained -= length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		pos += length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (copy_to_user(buf, &type, sizeof(type)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		       loff_t *offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	struct snd_tscm *tscm = hwdep->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	DEFINE_WAIT(wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	spin_lock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	while (!tscm->dev_lock_changed && tscm->push_pos == tscm->pull_pos) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		prepare_to_wait(&tscm->hwdep_wait, &wait, TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		finish_wait(&tscm->hwdep_wait, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		if (signal_pending(current))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 			return -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		spin_lock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	// NOTE: The acquired lock should be released in callee side.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (tscm->dev_lock_changed) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		count = tscm_hwdep_read_locked(tscm, buf, count, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	} else if (tscm->push_pos != tscm->pull_pos) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		count = tscm_hwdep_read_queue(tscm, buf, count, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			       poll_table *wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	struct snd_tscm *tscm = hwdep->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	__poll_t events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	poll_wait(file, &tscm->hwdep_wait, wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	spin_lock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (tscm->dev_lock_changed || tscm->push_pos != tscm->pull_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		events = EPOLLIN | EPOLLRDNORM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		events = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	return events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static int hwdep_get_info(struct snd_tscm *tscm, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	struct fw_device *dev = fw_parent_device(tscm->unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	struct snd_firewire_get_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	memset(&info, 0, sizeof(info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	info.type = SNDRV_FIREWIRE_TYPE_TASCAM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	info.card = dev->card->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	*(__be32 *)&info.guid[0] = cpu_to_be32(dev->config_rom[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	*(__be32 *)&info.guid[4] = cpu_to_be32(dev->config_rom[4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	strlcpy(info.device_name, dev_name(&dev->device),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		sizeof(info.device_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (copy_to_user(arg, &info, sizeof(info)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int hwdep_lock(struct snd_tscm *tscm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	spin_lock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	if (tscm->dev_lock_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		tscm->dev_lock_count = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		err = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int hwdep_unlock(struct snd_tscm *tscm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	spin_lock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (tscm->dev_lock_count == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		tscm->dev_lock_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		err = -EBADFD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static int tscm_hwdep_state(struct snd_tscm *tscm, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	if (copy_to_user(arg, tscm->state, sizeof(tscm->state)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) static int hwdep_release(struct snd_hwdep *hwdep, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct snd_tscm *tscm = hwdep->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	spin_lock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (tscm->dev_lock_count == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		tscm->dev_lock_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	spin_unlock_irq(&tscm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static int hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	    unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	struct snd_tscm *tscm = hwdep->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	case SNDRV_FIREWIRE_IOCTL_GET_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		return hwdep_get_info(tscm, (void __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	case SNDRV_FIREWIRE_IOCTL_LOCK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		return hwdep_lock(tscm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	case SNDRV_FIREWIRE_IOCTL_UNLOCK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 		return hwdep_unlock(tscm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	case SNDRV_FIREWIRE_IOCTL_TASCAM_STATE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		return tscm_hwdep_state(tscm, (void __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static int hwdep_compat_ioctl(struct snd_hwdep *hwdep, struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			      unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	return hwdep_ioctl(hwdep, file, cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			   (unsigned long)compat_ptr(arg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #define hwdep_compat_ioctl NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) int snd_tscm_create_hwdep_device(struct snd_tscm *tscm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	static const struct snd_hwdep_ops ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		.read		= hwdep_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		.release	= hwdep_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		.poll		= hwdep_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		.ioctl		= hwdep_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		.ioctl_compat	= hwdep_compat_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	struct snd_hwdep *hwdep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	err = snd_hwdep_new(tscm->card, "Tascam", 0, &hwdep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	strcpy(hwdep->name, "Tascam");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	hwdep->iface = SNDRV_HWDEP_IFACE_FW_TASCAM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	hwdep->ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	hwdep->private_data = tscm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	hwdep->exclusive = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	tscm->hwdep = hwdep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }