2011-09-04 20:04:49 +00:00
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/*
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* TC Applied Technologies Digital Interface Communications Engine driver
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*
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* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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2011-09-04 20:14:15 +00:00
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#include <linux/compat.h>
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2011-09-04 20:04:49 +00:00
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/firewire.h>
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#include <linux/firewire-constants.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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2011-09-04 20:14:15 +00:00
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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2011-09-04 20:04:49 +00:00
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#include <sound/control.h>
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#include <sound/core.h>
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2011-09-04 20:14:15 +00:00
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#include <sound/firewire.h>
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2011-09-04 20:04:49 +00:00
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#include <sound/hwdep.h>
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#include <sound/initval.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "amdtp.h"
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#include "iso-resources.h"
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#include "lib.h"
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2011-09-04 20:15:54 +00:00
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#include "dice-interface.h"
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2011-09-04 20:04:49 +00:00
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struct dice {
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struct snd_card *card;
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struct fw_unit *unit;
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2011-09-04 20:14:15 +00:00
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spinlock_t lock;
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2011-09-04 20:04:49 +00:00
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struct mutex mutex;
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unsigned int global_offset;
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unsigned int rx_offset;
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struct fw_address_handler notification_handler;
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int owner_generation;
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2011-09-04 20:14:15 +00:00
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int dev_lock_count; /* > 0 driver, < 0 userspace */
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bool dev_lock_changed;
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2011-09-04 20:04:49 +00:00
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bool global_enabled;
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2011-09-04 20:14:15 +00:00
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wait_queue_head_t hwdep_wait;
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u32 notification_bits;
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2011-09-04 20:04:49 +00:00
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struct snd_pcm_substream *pcm;
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struct fw_iso_resources resources;
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struct amdtp_out_stream stream;
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};
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MODULE_DESCRIPTION("DICE driver");
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MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
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MODULE_LICENSE("GPL v2");
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2011-09-04 20:12:06 +00:00
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static const unsigned int dice_rates[] = {
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[0] = 32000,
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[1] = 44100,
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[2] = 48000,
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[3] = 88200,
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[4] = 96000,
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[5] = 176400,
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[6] = 192000,
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};
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2011-09-04 20:14:15 +00:00
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static void dice_lock_changed(struct dice *dice)
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{
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dice->dev_lock_changed = true;
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wake_up(&dice->hwdep_wait);
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}
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static int dice_try_lock(struct dice *dice)
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{
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int err;
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spin_lock_irq(&dice->lock);
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if (dice->dev_lock_count < 0) {
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err = -EBUSY;
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goto out;
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}
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if (dice->dev_lock_count++ == 0)
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dice_lock_changed(dice);
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err = 0;
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out:
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spin_unlock_irq(&dice->lock);
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return err;
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}
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static void dice_unlock(struct dice *dice)
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{
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spin_lock_irq(&dice->lock);
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if (WARN_ON(dice->dev_lock_count <= 0))
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goto out;
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if (--dice->dev_lock_count == 0)
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dice_lock_changed(dice);
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out:
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spin_unlock_irq(&dice->lock);
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}
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2011-09-04 20:04:49 +00:00
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static inline u64 global_address(struct dice *dice, unsigned int offset)
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{
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return DICE_PRIVATE_SPACE + dice->global_offset + offset;
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}
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// TODO: rx index
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static inline u64 rx_address(struct dice *dice, unsigned int offset)
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{
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return DICE_PRIVATE_SPACE + dice->rx_offset + offset;
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}
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static int dice_owner_set(struct dice *dice)
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{
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struct fw_device *device = fw_parent_device(dice->unit);
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__be64 *buffer;
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2011-09-04 20:17:38 +00:00
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int err, errors = 0;
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2011-09-04 20:04:49 +00:00
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buffer = kmalloc(2 * 8, GFP_KERNEL);
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if (!buffer)
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return -ENOMEM;
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for (;;) {
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buffer[0] = cpu_to_be64(OWNER_NO_OWNER);
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buffer[1] = cpu_to_be64(
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((u64)device->card->node_id << OWNER_NODE_SHIFT) |
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dice->notification_handler.offset);
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dice->owner_generation = device->generation;
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smp_rmb(); /* node_id vs. generation */
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2011-09-04 20:17:38 +00:00
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err = snd_fw_transaction(dice->unit,
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TCODE_LOCK_COMPARE_SWAP,
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global_address(dice, GLOBAL_OWNER),
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buffer, 2 * 8,
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FW_FIXED_GENERATION |
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dice->owner_generation);
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if (err == 0) {
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if (buffer[0] != cpu_to_be64(OWNER_NO_OWNER)) {
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2011-09-04 20:04:49 +00:00
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dev_err(&dice->unit->device,
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"device is already in use\n");
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err = -EBUSY;
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}
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break;
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}
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2011-09-04 20:17:38 +00:00
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if (err != -EAGAIN || ++errors >= 3)
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2011-09-04 20:04:49 +00:00
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break;
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2011-09-04 20:17:38 +00:00
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2011-09-04 20:04:49 +00:00
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msleep(20);
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}
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kfree(buffer);
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return err;
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}
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static int dice_owner_update(struct dice *dice)
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{
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struct fw_device *device = fw_parent_device(dice->unit);
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__be64 *buffer;
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2011-09-04 20:17:38 +00:00
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int err;
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2011-09-04 20:04:49 +00:00
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if (dice->owner_generation == -1)
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return 0;
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buffer = kmalloc(2 * 8, GFP_KERNEL);
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if (!buffer)
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return -ENOMEM;
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2011-09-04 20:17:38 +00:00
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buffer[0] = cpu_to_be64(OWNER_NO_OWNER);
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buffer[1] = cpu_to_be64(
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((u64)device->card->node_id << OWNER_NODE_SHIFT) |
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dice->notification_handler.offset);
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2011-09-04 20:04:49 +00:00
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2011-09-04 20:17:38 +00:00
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dice->owner_generation = device->generation;
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smp_rmb(); /* node_id vs. generation */
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err = snd_fw_transaction(dice->unit, TCODE_LOCK_COMPARE_SWAP,
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global_address(dice, GLOBAL_OWNER),
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buffer, 2 * 8,
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FW_FIXED_GENERATION | dice->owner_generation);
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if (err == 0) {
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if (buffer[0] != cpu_to_be64(OWNER_NO_OWNER)) {
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2011-09-04 20:04:49 +00:00
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dev_err(&dice->unit->device,
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2011-09-04 20:17:38 +00:00
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"device is already in use\n");
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err = -EBUSY;
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2011-09-04 20:04:49 +00:00
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}
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2011-09-04 20:17:38 +00:00
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} else if (err == -EAGAIN) {
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err = 0; /* try again later */
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2011-09-04 20:04:49 +00:00
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}
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kfree(buffer);
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if (err < 0)
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dice->owner_generation = -1;
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return err;
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}
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static void dice_owner_clear(struct dice *dice)
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{
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struct fw_device *device = fw_parent_device(dice->unit);
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__be64 *buffer;
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buffer = kmalloc(2 * 8, GFP_KERNEL);
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if (!buffer)
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return;
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2011-09-04 20:17:38 +00:00
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buffer[0] = cpu_to_be64(
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((u64)device->card->node_id << OWNER_NODE_SHIFT) |
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dice->notification_handler.offset);
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buffer[1] = cpu_to_be64(OWNER_NO_OWNER);
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snd_fw_transaction(dice->unit, TCODE_LOCK_COMPARE_SWAP,
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global_address(dice, GLOBAL_OWNER),
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buffer, 2 * 8, FW_QUIET |
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FW_FIXED_GENERATION | dice->owner_generation);
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2011-09-04 20:04:49 +00:00
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kfree(buffer);
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dice->owner_generation = -1;
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}
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static int dice_enable_set(struct dice *dice)
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{
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__be32 value;
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2011-09-04 20:17:38 +00:00
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int err;
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2011-09-04 20:04:49 +00:00
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2011-09-04 20:15:54 +00:00
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value = cpu_to_be32(1);
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2011-09-04 20:17:38 +00:00
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err = snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
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global_address(dice, GLOBAL_ENABLE),
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&value, 4,
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FW_FIXED_GENERATION | dice->owner_generation);
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if (err < 0)
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return err;
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2011-09-04 20:04:49 +00:00
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2011-09-04 20:17:38 +00:00
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dice->global_enabled = true;
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return 0;
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2011-09-04 20:04:49 +00:00
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}
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static void dice_enable_clear(struct dice *dice)
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{
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__be32 value;
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value = 0;
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2011-09-04 20:17:38 +00:00
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snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
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global_address(dice, GLOBAL_ENABLE),
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&value, 4, FW_QUIET |
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FW_FIXED_GENERATION | dice->owner_generation);
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2011-09-04 20:04:49 +00:00
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dice->global_enabled = false;
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}
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static void dice_notification(struct fw_card *card, struct fw_request *request,
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int tcode, int destination, int source,
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int generation, unsigned long long offset,
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void *data, size_t length, void *callback_data)
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{
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struct dice *dice = callback_data;
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2011-09-04 20:14:15 +00:00
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unsigned long flags;
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2011-09-04 20:04:49 +00:00
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if (tcode != TCODE_WRITE_QUADLET_REQUEST) {
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fw_send_response(card, request, RCODE_TYPE_ERROR);
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return;
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}
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if ((offset & 3) != 0) {
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fw_send_response(card, request, RCODE_ADDRESS_ERROR);
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return;
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}
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2011-09-04 20:14:15 +00:00
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spin_lock_irqsave(&dice->lock, flags);
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dice->notification_bits |= be32_to_cpup(data);
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spin_unlock_irqrestore(&dice->lock, flags);
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2011-09-04 20:04:49 +00:00
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fw_send_response(card, request, RCODE_COMPLETE);
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2011-09-04 20:14:15 +00:00
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wake_up(&dice->hwdep_wait);
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2011-09-04 20:04:49 +00:00
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}
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static int dice_open(struct snd_pcm_substream *substream)
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{
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static const struct snd_pcm_hardware hardware = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_BATCH |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_BLOCK_TRANSFER,
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.formats = AMDTP_OUT_PCM_FORMAT_BITS,
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.buffer_bytes_max = 16 * 1024 * 1024,
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.period_bytes_min = 1,
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.period_bytes_max = UINT_MAX,
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.periods_min = 1,
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.periods_max = UINT_MAX,
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};
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struct dice *dice = substream->private_data;
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struct snd_pcm_runtime *runtime = substream->runtime;
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2011-09-04 20:17:31 +00:00
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__be32 clock_sel, data[2];
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unsigned int rate_index, number_audio, number_midi;
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2011-09-04 20:04:49 +00:00
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int err;
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2011-09-04 20:14:15 +00:00
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err = dice_try_lock(dice);
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if (err < 0)
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goto error;
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2011-09-04 20:12:06 +00:00
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err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST,
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global_address(dice, GLOBAL_CLOCK_SELECT),
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2011-09-04 20:17:38 +00:00
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&clock_sel, 4, 0);
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2011-09-04 20:12:06 +00:00
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if (err < 0)
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2011-09-04 20:14:15 +00:00
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goto err_lock;
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2011-09-04 20:16:10 +00:00
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rate_index = (be32_to_cpu(clock_sel) & CLOCK_RATE_MASK)
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>> CLOCK_RATE_SHIFT;
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if (rate_index >= ARRAY_SIZE(dice_rates)) {
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2011-09-04 20:14:15 +00:00
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err = -ENXIO;
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goto err_lock;
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}
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2011-09-04 20:12:06 +00:00
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2011-09-04 20:17:31 +00:00
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err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
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2011-09-04 20:04:49 +00:00
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rx_address(dice, RX_NUMBER_AUDIO),
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2011-09-04 20:17:38 +00:00
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data, 2 * 4, 0);
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2011-09-04 20:04:49 +00:00
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if (err < 0)
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2011-09-04 20:14:15 +00:00
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goto err_lock;
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2011-09-04 20:17:31 +00:00
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number_audio = be32_to_cpu(data[0]);
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number_midi = be32_to_cpu(data[1]);
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2011-09-04 20:04:49 +00:00
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runtime->hw = hardware;
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2011-09-04 20:12:06 +00:00
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2011-09-04 20:17:31 +00:00
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runtime->hw.rates = snd_pcm_rate_to_rate_bit(dice_rates[rate_index]);
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2011-09-04 20:12:06 +00:00
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|
|
snd_pcm_limit_hw_rates(runtime);
|
|
|
|
|
2011-09-04 20:17:31 +00:00
|
|
|
runtime->hw.channels_min = number_audio;
|
|
|
|
runtime->hw.channels_max = number_audio;
|
2011-09-04 20:04:49 +00:00
|
|
|
|
2011-09-04 20:17:31 +00:00
|
|
|
amdtp_out_stream_set_parameters(&dice->stream, dice_rates[rate_index],
|
|
|
|
number_audio, number_midi);
|
2011-09-04 20:16:10 +00:00
|
|
|
|
|
|
|
err = snd_pcm_hw_constraint_step(runtime, 0,
|
|
|
|
SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
|
|
|
|
amdtp_syt_intervals[rate_index]);
|
|
|
|
if (err < 0)
|
|
|
|
goto err_lock;
|
|
|
|
err = snd_pcm_hw_constraint_step(runtime, 0,
|
|
|
|
SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
|
|
|
|
amdtp_syt_intervals[rate_index]);
|
|
|
|
if (err < 0)
|
|
|
|
goto err_lock;
|
2011-09-04 20:04:49 +00:00
|
|
|
|
|
|
|
err = snd_pcm_hw_constraint_minmax(runtime,
|
|
|
|
SNDRV_PCM_HW_PARAM_PERIOD_TIME,
|
|
|
|
5000, 8192000);
|
|
|
|
if (err < 0)
|
2011-09-04 20:14:15 +00:00
|
|
|
goto err_lock;
|
2011-09-04 20:04:49 +00:00
|
|
|
|
|
|
|
err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
|
|
|
|
if (err < 0)
|
2011-09-04 20:14:15 +00:00
|
|
|
goto err_lock;
|
2011-09-04 20:04:49 +00:00
|
|
|
|
|
|
|
return 0;
|
2011-09-04 20:14:15 +00:00
|
|
|
|
|
|
|
err_lock:
|
|
|
|
dice_unlock(dice);
|
|
|
|
error:
|
|
|
|
return err;
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_close(struct snd_pcm_substream *substream)
|
|
|
|
{
|
2011-09-04 20:14:15 +00:00
|
|
|
struct dice *dice = substream->private_data;
|
|
|
|
|
|
|
|
dice_unlock(dice);
|
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-09-04 20:11:14 +00:00
|
|
|
static int dice_stream_start_packets(struct dice *dice)
|
2011-09-04 20:04:49 +00:00
|
|
|
{
|
2011-09-04 20:11:14 +00:00
|
|
|
int err;
|
|
|
|
|
2011-09-04 20:15:44 +00:00
|
|
|
if (amdtp_out_stream_running(&dice->stream))
|
2011-09-04 20:11:14 +00:00
|
|
|
return 0;
|
2011-09-04 20:04:49 +00:00
|
|
|
|
2011-09-04 20:11:14 +00:00
|
|
|
err = amdtp_out_stream_start(&dice->stream, dice->resources.channel,
|
|
|
|
fw_parent_device(dice->unit)->max_speed);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
2011-09-04 20:04:49 +00:00
|
|
|
|
2011-09-04 20:11:14 +00:00
|
|
|
err = dice_enable_set(dice);
|
|
|
|
if (err < 0) {
|
2011-09-04 20:04:49 +00:00
|
|
|
amdtp_out_stream_stop(&dice->stream);
|
2011-09-04 20:11:14 +00:00
|
|
|
return err;
|
|
|
|
}
|
2011-09-04 20:04:49 +00:00
|
|
|
|
2011-09-04 20:11:14 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2011-09-04 20:04:49 +00:00
|
|
|
|
2011-09-04 20:11:14 +00:00
|
|
|
static int dice_stream_start(struct dice *dice)
|
|
|
|
{
|
|
|
|
__be32 channel;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (!dice->resources.allocated) {
|
|
|
|
err = fw_iso_resources_allocate(&dice->resources,
|
|
|
|
amdtp_out_stream_get_max_payload(&dice->stream),
|
|
|
|
fw_parent_device(dice->unit)->max_speed);
|
|
|
|
if (err < 0)
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
channel = cpu_to_be32(dice->resources.channel);
|
|
|
|
err = snd_fw_transaction(dice->unit,
|
|
|
|
TCODE_WRITE_QUADLET_REQUEST,
|
|
|
|
rx_address(dice, RX_ISOCHRONOUS),
|
2011-09-04 20:17:38 +00:00
|
|
|
&channel, 4, 0);
|
2011-09-04 20:11:14 +00:00
|
|
|
if (err < 0)
|
|
|
|
goto err_resources;
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
2011-09-04 20:11:14 +00:00
|
|
|
|
|
|
|
err = dice_stream_start_packets(dice);
|
|
|
|
if (err < 0)
|
|
|
|
goto err_rx_channel;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_rx_channel:
|
|
|
|
channel = cpu_to_be32((u32)-1);
|
|
|
|
snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
|
2011-09-04 20:17:38 +00:00
|
|
|
rx_address(dice, RX_ISOCHRONOUS), &channel, 4, 0);
|
2011-09-04 20:11:14 +00:00
|
|
|
err_resources:
|
|
|
|
fw_iso_resources_free(&dice->resources);
|
|
|
|
error:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dice_stream_stop_packets(struct dice *dice)
|
|
|
|
{
|
2011-09-04 20:15:44 +00:00
|
|
|
if (amdtp_out_stream_running(&dice->stream)) {
|
|
|
|
dice_enable_clear(dice);
|
|
|
|
amdtp_out_stream_stop(&dice->stream);
|
|
|
|
}
|
2011-09-04 20:11:14 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void dice_stream_stop(struct dice *dice)
|
|
|
|
{
|
|
|
|
__be32 channel;
|
|
|
|
|
|
|
|
dice_stream_stop_packets(dice);
|
|
|
|
|
|
|
|
if (!dice->resources.allocated)
|
|
|
|
return;
|
|
|
|
|
|
|
|
channel = cpu_to_be32((u32)-1);
|
|
|
|
snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
|
2011-09-04 20:17:38 +00:00
|
|
|
rx_address(dice, RX_ISOCHRONOUS), &channel, 4, 0);
|
2011-09-04 20:11:14 +00:00
|
|
|
|
|
|
|
fw_iso_resources_free(&dice->resources);
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_hw_params(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_pcm_hw_params *hw_params)
|
|
|
|
{
|
|
|
|
struct dice *dice = substream->private_data;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
mutex_lock(&dice->mutex);
|
2011-09-04 20:11:14 +00:00
|
|
|
dice_stream_stop(dice);
|
2011-09-04 20:04:49 +00:00
|
|
|
mutex_unlock(&dice->mutex);
|
|
|
|
|
|
|
|
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
|
|
|
|
params_buffer_bytes(hw_params));
|
|
|
|
if (err < 0)
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
amdtp_out_stream_set_pcm_format(&dice->stream,
|
|
|
|
params_format(hw_params));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
error:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_hw_free(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
struct dice *dice = substream->private_data;
|
|
|
|
|
|
|
|
mutex_lock(&dice->mutex);
|
2011-09-04 20:11:14 +00:00
|
|
|
dice_stream_stop(dice);
|
2011-09-04 20:04:49 +00:00
|
|
|
mutex_unlock(&dice->mutex);
|
|
|
|
|
|
|
|
return snd_pcm_lib_free_vmalloc_buffer(substream);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_prepare(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
struct dice *dice = substream->private_data;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
mutex_lock(&dice->mutex);
|
|
|
|
|
|
|
|
if (amdtp_out_streaming_error(&dice->stream))
|
2011-09-04 20:11:14 +00:00
|
|
|
dice_stream_stop_packets(dice);
|
2011-09-04 20:04:49 +00:00
|
|
|
|
2011-09-04 20:11:14 +00:00
|
|
|
err = dice_stream_start(dice);
|
|
|
|
if (err < 0) {
|
|
|
|
mutex_unlock(&dice->mutex);
|
|
|
|
return err;
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
mutex_unlock(&dice->mutex);
|
|
|
|
|
|
|
|
amdtp_out_stream_pcm_prepare(&dice->stream);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
|
|
{
|
|
|
|
struct dice *dice = substream->private_data;
|
|
|
|
struct snd_pcm_substream *pcm;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
|
|
pcm = substream;
|
|
|
|
break;
|
|
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
|
|
pcm = NULL;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
amdtp_out_stream_pcm_trigger(&dice->stream, pcm);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static snd_pcm_uframes_t dice_pointer(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
struct dice *dice = substream->private_data;
|
|
|
|
|
|
|
|
return amdtp_out_stream_pcm_pointer(&dice->stream);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_create_pcm(struct dice *dice)
|
|
|
|
{
|
|
|
|
static struct snd_pcm_ops ops = {
|
|
|
|
.open = dice_open,
|
|
|
|
.close = dice_close,
|
|
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
|
|
.hw_params = dice_hw_params,
|
|
|
|
.hw_free = dice_hw_free,
|
|
|
|
.prepare = dice_prepare,
|
|
|
|
.trigger = dice_trigger,
|
|
|
|
.pointer = dice_pointer,
|
|
|
|
.page = snd_pcm_lib_get_vmalloc_page,
|
|
|
|
.mmap = snd_pcm_lib_mmap_vmalloc,
|
|
|
|
};
|
|
|
|
struct snd_pcm *pcm;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = snd_pcm_new(dice->card, "DICE", 0, 1, 0, &pcm);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
pcm->private_data = dice;
|
|
|
|
strcpy(pcm->name, dice->card->shortname);
|
|
|
|
dice->pcm = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
|
|
|
|
dice->pcm->ops = &ops;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static long dice_hwdep_read(struct snd_hwdep *hwdep, char __user *buf,
|
|
|
|
long count, loff_t *offset)
|
|
|
|
{
|
2011-09-04 20:14:15 +00:00
|
|
|
struct dice *dice = hwdep->private_data;
|
|
|
|
DEFINE_WAIT(wait);
|
|
|
|
union snd_firewire_event event;
|
|
|
|
|
|
|
|
spin_lock_irq(&dice->lock);
|
|
|
|
|
|
|
|
while (!dice->dev_lock_changed && dice->notification_bits == 0) {
|
|
|
|
prepare_to_wait(&dice->hwdep_wait, &wait, TASK_INTERRUPTIBLE);
|
|
|
|
spin_unlock_irq(&dice->lock);
|
|
|
|
schedule();
|
|
|
|
finish_wait(&dice->hwdep_wait, &wait);
|
|
|
|
if (signal_pending(current))
|
|
|
|
return -ERESTARTSYS;
|
|
|
|
spin_lock_irq(&dice->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
memset(&event, 0, sizeof(event));
|
|
|
|
if (dice->dev_lock_changed) {
|
|
|
|
event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS;
|
|
|
|
event.lock_status.status = dice->dev_lock_count > 0;
|
|
|
|
dice->dev_lock_changed = false;
|
|
|
|
|
|
|
|
count = min(count, (long)sizeof(event.lock_status));
|
|
|
|
} else {
|
|
|
|
event.dice_notification.type = SNDRV_FIREWIRE_EVENT_DICE_NOTIFICATION;
|
|
|
|
event.dice_notification.notification = dice->notification_bits;
|
|
|
|
dice->notification_bits = 0;
|
|
|
|
|
|
|
|
count = min(count, (long)sizeof(event.dice_notification));
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_irq(&dice->lock);
|
|
|
|
|
|
|
|
if (copy_to_user(buf, &event, count))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
return count;
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
|
|
|
|
2011-09-04 20:14:15 +00:00
|
|
|
static unsigned int dice_hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
|
|
|
|
poll_table *wait)
|
2011-09-04 20:04:49 +00:00
|
|
|
{
|
2011-09-04 20:14:15 +00:00
|
|
|
struct dice *dice = hwdep->private_data;
|
|
|
|
unsigned int events;
|
|
|
|
|
|
|
|
poll_wait(file, &dice->hwdep_wait, wait);
|
|
|
|
|
|
|
|
spin_lock_irq(&dice->lock);
|
|
|
|
if (dice->dev_lock_changed || dice->notification_bits != 0)
|
|
|
|
events = POLLIN | POLLRDNORM;
|
|
|
|
else
|
|
|
|
events = 0;
|
|
|
|
spin_unlock_irq(&dice->lock);
|
|
|
|
|
|
|
|
return events;
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
|
|
|
|
2011-09-04 20:14:15 +00:00
|
|
|
static int dice_hwdep_get_info(struct dice *dice, void __user *arg)
|
2011-09-04 20:04:49 +00:00
|
|
|
{
|
2011-09-04 20:14:15 +00:00
|
|
|
struct fw_device *dev = fw_parent_device(dice->unit);
|
|
|
|
struct snd_firewire_get_info info;
|
|
|
|
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
|
|
info.type = SNDRV_FIREWIRE_TYPE_DICE;
|
|
|
|
info.card = dev->card->index;
|
|
|
|
*(__be32 *)&info.guid[0] = cpu_to_be32(dev->config_rom[3]);
|
|
|
|
*(__be32 *)&info.guid[4] = cpu_to_be32(dev->config_rom[4]);
|
|
|
|
strlcpy(info.device_name, dev_name(&dev->device),
|
|
|
|
sizeof(info.device_name));
|
|
|
|
|
|
|
|
if (copy_to_user(arg, &info, sizeof(info)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-09-04 20:14:15 +00:00
|
|
|
static int dice_hwdep_lock(struct dice *dice)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
spin_lock_irq(&dice->lock);
|
|
|
|
|
|
|
|
if (dice->dev_lock_count == 0) {
|
|
|
|
dice->dev_lock_count = -1;
|
|
|
|
err = 0;
|
|
|
|
} else {
|
|
|
|
err = -EBUSY;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_irq(&dice->lock);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_hwdep_unlock(struct dice *dice)
|
2011-09-04 20:04:49 +00:00
|
|
|
{
|
2011-09-04 20:14:15 +00:00
|
|
|
int err;
|
|
|
|
|
|
|
|
spin_lock_irq(&dice->lock);
|
|
|
|
|
|
|
|
if (dice->dev_lock_count == -1) {
|
|
|
|
dice->dev_lock_count = 0;
|
|
|
|
err = 0;
|
|
|
|
} else {
|
|
|
|
err = -EBADFD;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_irq(&dice->lock);
|
|
|
|
|
|
|
|
return err;
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
|
|
|
|
2011-09-04 20:14:54 +00:00
|
|
|
static int dice_hwdep_release(struct snd_hwdep *hwdep, struct file *file)
|
|
|
|
{
|
|
|
|
struct dice *dice = hwdep->private_data;
|
|
|
|
|
|
|
|
spin_lock_irq(&dice->lock);
|
|
|
|
if (dice->dev_lock_count == -1)
|
|
|
|
dice->dev_lock_count = 0;
|
|
|
|
spin_unlock_irq(&dice->lock);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
static int dice_hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file,
|
|
|
|
unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
2011-09-04 20:14:15 +00:00
|
|
|
struct dice *dice = hwdep->private_data;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case SNDRV_FIREWIRE_IOCTL_GET_INFO:
|
|
|
|
return dice_hwdep_get_info(dice, (void __user *)arg);
|
|
|
|
case SNDRV_FIREWIRE_IOCTL_LOCK:
|
|
|
|
return dice_hwdep_lock(dice);
|
|
|
|
case SNDRV_FIREWIRE_IOCTL_UNLOCK:
|
|
|
|
return dice_hwdep_unlock(dice);
|
|
|
|
default:
|
|
|
|
return -ENOIOCTLCMD;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
static int dice_hwdep_compat_ioctl(struct snd_hwdep *hwdep, struct file *file,
|
|
|
|
unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
|
|
|
return dice_hwdep_ioctl(hwdep, file, cmd,
|
|
|
|
(unsigned long)compat_ptr(arg));
|
2011-09-04 20:04:49 +00:00
|
|
|
}
|
2011-09-04 20:14:15 +00:00
|
|
|
#else
|
|
|
|
#define dice_hwdep_compat_ioctl NULL
|
|
|
|
#endif
|
2011-09-04 20:04:49 +00:00
|
|
|
|
|
|
|
static int dice_create_hwdep(struct dice *dice)
|
|
|
|
{
|
|
|
|
static const struct snd_hwdep_ops ops = {
|
|
|
|
.read = dice_hwdep_read,
|
2011-09-04 20:14:54 +00:00
|
|
|
.release = dice_hwdep_release,
|
2011-09-04 20:04:49 +00:00
|
|
|
.poll = dice_hwdep_poll,
|
|
|
|
.ioctl = dice_hwdep_ioctl,
|
2011-09-04 20:14:15 +00:00
|
|
|
.ioctl_compat = dice_hwdep_compat_ioctl,
|
2011-09-04 20:04:49 +00:00
|
|
|
};
|
|
|
|
struct snd_hwdep *hwdep;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = snd_hwdep_new(dice->card, "DICE", 0, &hwdep);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
strcpy(hwdep->name, "DICE");
|
|
|
|
hwdep->iface = SNDRV_HWDEP_IFACE_FW_DICE;
|
|
|
|
hwdep->ops = ops;
|
|
|
|
hwdep->private_data = dice;
|
|
|
|
hwdep->exclusive = true;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dice_card_free(struct snd_card *card)
|
|
|
|
{
|
|
|
|
struct dice *dice = card->private_data;
|
|
|
|
|
|
|
|
amdtp_out_stream_destroy(&dice->stream);
|
|
|
|
fw_core_remove_address_handler(&dice->notification_handler);
|
|
|
|
mutex_destroy(&dice->mutex);
|
|
|
|
}
|
|
|
|
|
2011-09-04 20:16:02 +00:00
|
|
|
#define DICE_CATEGORY_ID 0x04
|
|
|
|
|
|
|
|
static int dice_interface_check(struct fw_unit *unit)
|
|
|
|
{
|
|
|
|
static const int min_values[10] = {
|
|
|
|
10, 0x64 / 4,
|
|
|
|
10, 0x18 / 4,
|
|
|
|
10, 0x18 / 4,
|
|
|
|
0, 0,
|
|
|
|
0, 0,
|
|
|
|
};
|
|
|
|
struct fw_device *device = fw_parent_device(unit);
|
|
|
|
struct fw_csr_iterator it;
|
|
|
|
int key, value, vendor = -1, model = -1, err;
|
|
|
|
unsigned int i;
|
|
|
|
__be32 pointers[ARRAY_SIZE(min_values)];
|
|
|
|
__be32 version;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check that GUID and unit directory are constructed according to DICE
|
|
|
|
* rules, i.e., that the specifier ID is the GUID's OUI, and that the
|
|
|
|
* GUID chip ID consists of the 8-bit DICE category ID, the 10-bit
|
|
|
|
* product ID, and a 22-bit serial number.
|
|
|
|
*/
|
|
|
|
fw_csr_iterator_init(&it, unit->directory);
|
|
|
|
while (fw_csr_iterator_next(&it, &key, &value)) {
|
|
|
|
switch (key) {
|
|
|
|
case CSR_SPECIFIER_ID:
|
|
|
|
vendor = value;
|
|
|
|
break;
|
|
|
|
case CSR_MODEL:
|
|
|
|
model = value;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (device->config_rom[3] != ((vendor << 8) | DICE_CATEGORY_ID) ||
|
|
|
|
device->config_rom[4] >> 22 != model)
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check that the sub address spaces exist and are located inside the
|
|
|
|
* private address space. The minimum values are chosen so that all
|
|
|
|
* minimally required registers are included.
|
|
|
|
*/
|
|
|
|
err = snd_fw_transaction(unit, TCODE_READ_BLOCK_REQUEST,
|
|
|
|
DICE_PRIVATE_SPACE,
|
2011-09-04 20:17:38 +00:00
|
|
|
pointers, sizeof(pointers), 0);
|
2011-09-04 20:16:02 +00:00
|
|
|
if (err < 0)
|
|
|
|
return -ENODEV;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pointers); ++i) {
|
|
|
|
value = be32_to_cpu(pointers[i]);
|
|
|
|
if (value < min_values[i] || value >= 0x40000)
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check that the implemented DICE driver specification major version
|
|
|
|
* number matches.
|
|
|
|
*/
|
|
|
|
err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
|
|
|
|
DICE_PRIVATE_SPACE +
|
|
|
|
be32_to_cpu(pointers[0]) * 4 + GLOBAL_VERSION,
|
2011-09-04 20:17:38 +00:00
|
|
|
&version, 4, 0);
|
2011-09-04 20:16:02 +00:00
|
|
|
if (err < 0)
|
|
|
|
return -ENODEV;
|
|
|
|
if ((version & cpu_to_be32(0xff000000)) != cpu_to_be32(0x01000000)) {
|
|
|
|
dev_err(&unit->device,
|
|
|
|
"unknown DICE version: 0x%08x\n", be32_to_cpu(version));
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
static int dice_init_offsets(struct dice *dice)
|
|
|
|
{
|
|
|
|
__be32 pointers[6];
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
|
2011-09-04 20:16:02 +00:00
|
|
|
DICE_PRIVATE_SPACE,
|
2011-09-04 20:17:38 +00:00
|
|
|
pointers, sizeof(pointers), 0);
|
2011-09-04 20:04:49 +00:00
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
dice->global_offset = be32_to_cpu(pointers[0]) * 4;
|
|
|
|
dice->rx_offset = be32_to_cpu(pointers[4]) * 4;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dice_card_strings(struct dice *dice)
|
|
|
|
{
|
|
|
|
struct snd_card *card = dice->card;
|
|
|
|
struct fw_device *dev = fw_parent_device(dice->unit);
|
|
|
|
char vendor[32], model[32];
|
|
|
|
unsigned int i;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
strcpy(card->driver, "DICE");
|
|
|
|
|
|
|
|
strcpy(card->shortname, "DICE");
|
|
|
|
BUILD_BUG_ON(NICK_NAME_SIZE < sizeof(card->shortname));
|
|
|
|
err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
|
|
|
|
global_address(dice, GLOBAL_NICK_NAME),
|
2011-09-04 20:17:38 +00:00
|
|
|
card->shortname, sizeof(card->shortname), 0);
|
2011-09-04 20:04:49 +00:00
|
|
|
if (err >= 0) {
|
|
|
|
/* DICE strings are returned in "always-wrong" endianness */
|
|
|
|
BUILD_BUG_ON(sizeof(card->shortname) % 4 != 0);
|
|
|
|
for (i = 0; i < sizeof(card->shortname); i += 4)
|
|
|
|
swab32s((u32 *)&card->shortname[i]);
|
|
|
|
card->shortname[sizeof(card->shortname) - 1] = '\0';
|
|
|
|
}
|
|
|
|
|
|
|
|
strcpy(vendor, "?");
|
|
|
|
fw_csr_string(dev->config_rom + 5, CSR_VENDOR, vendor, sizeof(vendor));
|
|
|
|
strcpy(model, "?");
|
|
|
|
fw_csr_string(dice->unit->directory, CSR_MODEL, model, sizeof(model));
|
|
|
|
snprintf(card->longname, sizeof(card->longname),
|
2011-09-04 20:16:02 +00:00
|
|
|
"%s %s (serial %u) at %s, S%d",
|
|
|
|
vendor, model, dev->config_rom[4] & 0x3fffff,
|
2011-09-04 20:04:49 +00:00
|
|
|
dev_name(&dice->unit->device), 100 << dev->max_speed);
|
|
|
|
|
|
|
|
strcpy(card->mixername, "DICE");
|
|
|
|
}
|
|
|
|
|
|
|
|
static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
|
|
|
|
{
|
|
|
|
struct snd_card *card;
|
|
|
|
struct dice *dice;
|
2011-09-04 20:12:06 +00:00
|
|
|
__be32 clock_sel;
|
2011-09-04 20:04:49 +00:00
|
|
|
int err;
|
|
|
|
|
2011-09-04 20:16:02 +00:00
|
|
|
err = dice_interface_check(unit);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
err = snd_card_create(-1, NULL, THIS_MODULE, sizeof(*dice), &card);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
snd_card_set_dev(card, &unit->device);
|
|
|
|
|
|
|
|
dice = card->private_data;
|
|
|
|
dice->card = card;
|
2011-09-04 20:14:15 +00:00
|
|
|
spin_lock_init(&dice->lock);
|
2011-09-04 20:04:49 +00:00
|
|
|
mutex_init(&dice->mutex);
|
|
|
|
dice->unit = unit;
|
2011-09-04 20:14:15 +00:00
|
|
|
init_waitqueue_head(&dice->hwdep_wait);
|
2011-09-04 20:04:49 +00:00
|
|
|
|
|
|
|
err = dice_init_offsets(dice);
|
|
|
|
if (err < 0)
|
|
|
|
goto err_mutex;
|
|
|
|
|
|
|
|
dice->notification_handler.length = 4;
|
|
|
|
dice->notification_handler.address_callback = dice_notification;
|
|
|
|
dice->notification_handler.callback_data = dice;
|
|
|
|
err = fw_core_add_address_handler(&dice->notification_handler,
|
|
|
|
&fw_high_memory_region);
|
|
|
|
if (err < 0)
|
|
|
|
goto err_mutex;
|
|
|
|
|
|
|
|
err = fw_iso_resources_init(&dice->resources, unit);
|
|
|
|
if (err < 0)
|
|
|
|
goto err_notification_handler;
|
|
|
|
dice->resources.channels_mask = 0x00000000ffffffffuLL;
|
|
|
|
|
2011-09-04 20:16:10 +00:00
|
|
|
err = amdtp_out_stream_init(&dice->stream, unit,
|
|
|
|
CIP_BLOCKING | CIP_HI_DUALWIRE);
|
2011-09-04 20:04:49 +00:00
|
|
|
if (err < 0)
|
|
|
|
goto err_resources;
|
|
|
|
|
|
|
|
err = dice_owner_set(dice);
|
|
|
|
if (err < 0)
|
|
|
|
goto err_stream;
|
|
|
|
|
|
|
|
card->private_free = dice_card_free;
|
|
|
|
|
|
|
|
dice_card_strings(dice);
|
|
|
|
|
2011-09-04 20:12:06 +00:00
|
|
|
err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
|
|
|
|
global_address(dice, GLOBAL_CLOCK_SELECT),
|
2011-09-04 20:17:38 +00:00
|
|
|
&clock_sel, 4, 0);
|
2011-09-04 20:12:06 +00:00
|
|
|
if (err < 0)
|
|
|
|
goto error;
|
|
|
|
clock_sel &= cpu_to_be32(~CLOCK_SOURCE_MASK);
|
|
|
|
clock_sel |= cpu_to_be32(CLOCK_SOURCE_ARX1);
|
|
|
|
err = snd_fw_transaction(unit, TCODE_WRITE_QUADLET_REQUEST,
|
|
|
|
global_address(dice, GLOBAL_CLOCK_SELECT),
|
2011-09-04 20:17:38 +00:00
|
|
|
&clock_sel, 4, 0);
|
2011-09-04 20:12:06 +00:00
|
|
|
if (err < 0)
|
|
|
|
goto error;
|
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
err = dice_create_pcm(dice);
|
|
|
|
if (err < 0)
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
err = dice_create_hwdep(dice);
|
|
|
|
if (err < 0)
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
err = snd_card_register(card);
|
|
|
|
if (err < 0)
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
dev_set_drvdata(&unit->device, dice);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_stream:
|
|
|
|
amdtp_out_stream_destroy(&dice->stream);
|
|
|
|
err_resources:
|
|
|
|
fw_iso_resources_destroy(&dice->resources);
|
|
|
|
err_notification_handler:
|
|
|
|
fw_core_remove_address_handler(&dice->notification_handler);
|
|
|
|
err_mutex:
|
|
|
|
mutex_destroy(&dice->mutex);
|
|
|
|
error:
|
|
|
|
snd_card_free(card);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dice_remove(struct fw_unit *unit)
|
|
|
|
{
|
|
|
|
struct dice *dice = dev_get_drvdata(&unit->device);
|
|
|
|
|
|
|
|
mutex_lock(&dice->mutex);
|
2011-09-04 20:13:09 +00:00
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
amdtp_out_stream_pcm_abort(&dice->stream);
|
2011-09-04 20:13:09 +00:00
|
|
|
|
|
|
|
snd_card_disconnect(dice->card);
|
|
|
|
|
2011-09-04 20:11:14 +00:00
|
|
|
dice_stream_stop(dice);
|
2011-09-04 20:04:49 +00:00
|
|
|
dice_owner_clear(dice);
|
2011-09-04 20:13:09 +00:00
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
mutex_unlock(&dice->mutex);
|
|
|
|
|
|
|
|
snd_card_free_when_closed(dice->card);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dice_bus_reset(struct fw_unit *unit)
|
|
|
|
{
|
|
|
|
struct dice *dice = dev_get_drvdata(&unit->device);
|
|
|
|
|
|
|
|
mutex_lock(&dice->mutex);
|
2011-09-04 20:11:14 +00:00
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
/*
|
|
|
|
* On a bus reset, the DICE firmware disables streaming and then goes
|
|
|
|
* off contemplating its own navel for hundreds of milliseconds before
|
|
|
|
* it can react to any of our attempts to reenable streaming. This
|
|
|
|
* means that we lose synchronization anyway, so we force our streams
|
|
|
|
* to stop so that the application can restart them in an orderly
|
|
|
|
* manner.
|
|
|
|
*/
|
|
|
|
amdtp_out_stream_pcm_abort(&dice->stream);
|
2011-09-04 20:11:14 +00:00
|
|
|
dice_stream_stop_packets(dice);
|
|
|
|
|
|
|
|
dice_owner_update(dice);
|
|
|
|
|
|
|
|
fw_iso_resources_update(&dice->resources);
|
|
|
|
|
2011-09-04 20:04:49 +00:00
|
|
|
mutex_unlock(&dice->mutex);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define DICE_INTERFACE 0x000001
|
|
|
|
|
|
|
|
static const struct ieee1394_device_id dice_id_table[] = {
|
|
|
|
{
|
2011-09-04 20:16:02 +00:00
|
|
|
.match_flags = IEEE1394_MATCH_VERSION,
|
|
|
|
.version = DICE_INTERFACE,
|
2011-09-04 20:04:49 +00:00
|
|
|
},
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(ieee1394, dice_id_table);
|
|
|
|
|
|
|
|
static struct fw_driver dice_driver = {
|
|
|
|
.driver = {
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.name = KBUILD_MODNAME,
|
|
|
|
.bus = &fw_bus_type,
|
|
|
|
},
|
|
|
|
.probe = dice_probe,
|
|
|
|
.update = dice_bus_reset,
|
|
|
|
.remove = dice_remove,
|
|
|
|
.id_table = dice_id_table,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init alsa_dice_init(void)
|
|
|
|
{
|
|
|
|
return driver_register(&dice_driver.driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit alsa_dice_exit(void)
|
|
|
|
{
|
|
|
|
driver_unregister(&dice_driver.driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(alsa_dice_init);
|
|
|
|
module_exit(alsa_dice_exit);
|