2 * Driver for Tascam US-X2Y USB soundcards
4 * FPGA Loader + ALSA Startup
6 * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <sound/driver.h>
24 #include <linux/interrupt.h>
25 #include <linux/usb.h>
26 #include <sound/core.h>
27 #include <sound/memalloc.h>
28 #include <sound/pcm.h>
29 #include <sound/hwdep.h>
32 #include "usX2Yhwdep.h"
35 static struct page * snd_us428ctls_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
41 snd_printdd("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n",
43 address - area->vm_start,
44 (address - area->vm_start) >> PAGE_SHIFT,
47 offset = area->vm_pgoff << PAGE_SHIFT;
48 offset += address - area->vm_start;
49 snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM);
50 vaddr = (char*)((usX2Ydev_t*)area->vm_private_data)->us428ctls_sharedmem + offset;
51 page = virt_to_page(vaddr);
53 snd_printdd( "vaddr=%p made us428ctls_vm_nopage() return %p; offset=%lX\n", vaddr, page, offset);
56 *type = VM_FAULT_MINOR;
61 static struct vm_operations_struct us428ctls_vm_ops = {
62 .nopage = snd_us428ctls_vm_nopage,
65 static int snd_us428ctls_mmap(snd_hwdep_t * hw, struct file *filp, struct vm_area_struct *area)
67 unsigned long size = (unsigned long)(area->vm_end - area->vm_start);
68 usX2Ydev_t *us428 = (usX2Ydev_t*)hw->private_data;
70 // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
71 // so as long as the device isn't fully initialised yet we return -EBUSY here.
72 if (!(((usX2Ydev_t*)hw->private_data)->chip_status & USX2Y_STAT_CHIP_INIT))
75 /* if userspace tries to mmap beyond end of our buffer, fail */
76 if (size > ((PAGE_SIZE - 1 + sizeof(us428ctls_sharedmem_t)) / PAGE_SIZE) * PAGE_SIZE) {
77 snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(us428ctls_sharedmem_t));
81 if (!us428->us428ctls_sharedmem) {
82 init_waitqueue_head(&us428->us428ctls_wait_queue_head);
83 if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(us428ctls_sharedmem_t), GFP_KERNEL)))
85 memset(us428->us428ctls_sharedmem, -1, sizeof(us428ctls_sharedmem_t));
86 us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
88 area->vm_ops = &us428ctls_vm_ops;
89 area->vm_flags |= VM_RESERVED;
90 area->vm_private_data = hw->private_data;
94 static unsigned int snd_us428ctls_poll(snd_hwdep_t *hw, struct file *file, poll_table *wait)
96 unsigned int mask = 0;
97 usX2Ydev_t *us428 = (usX2Ydev_t*)hw->private_data;
98 static unsigned LastN;
100 if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
103 poll_wait(file, &us428->us428ctls_wait_queue_head, wait);
105 down(&us428->open_mutex);
106 if (us428->us428ctls_sharedmem
107 && us428->us428ctls_sharedmem->CtlSnapShotLast != LastN) {
109 LastN = us428->us428ctls_sharedmem->CtlSnapShotLast;
111 up(&us428->open_mutex);
117 static int snd_usX2Y_hwdep_open(snd_hwdep_t *hw, struct file *file)
122 static int snd_usX2Y_hwdep_release(snd_hwdep_t *hw, struct file *file)
127 static int snd_usX2Y_hwdep_dsp_status(snd_hwdep_t *hw, snd_hwdep_dsp_status_t *info)
129 static char *type_ids[USX2Y_TYPE_NUMS] = {
130 [USX2Y_TYPE_122] = "us122",
131 [USX2Y_TYPE_224] = "us224",
132 [USX2Y_TYPE_428] = "us428",
136 switch (((usX2Ydev_t*)hw->private_data)->chip.dev->descriptor.idProduct) {
149 strcpy(info->id, type_ids[id]);
150 info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code
151 if (((usX2Ydev_t*)hw->private_data)->chip_status & USX2Y_STAT_CHIP_INIT)
152 info->chip_ready = 1;
153 info->version = USX2Y_DRIVER_VERSION;
158 static int usX2Y_create_usbmidi(snd_card_t* card )
160 static snd_usb_midi_endpoint_info_t quirk_data_1 = {
166 static snd_usb_audio_quirk_t quirk_1 = {
167 .vendor_name = "TASCAM",
168 .product_name = NAME_ALLCAPS,
170 .type = QUIRK_MIDI_FIXED_ENDPOINT,
171 .data = &quirk_data_1
173 static snd_usb_midi_endpoint_info_t quirk_data_2 = {
179 static snd_usb_audio_quirk_t quirk_2 = {
180 .vendor_name = "TASCAM",
181 .product_name = "US428",
183 .type = QUIRK_MIDI_FIXED_ENDPOINT,
184 .data = &quirk_data_2
186 struct usb_device *dev = usX2Y(card)->chip.dev;
187 struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
188 snd_usb_audio_quirk_t *quirk = dev->descriptor.idProduct == USB_ID_US428 ? &quirk_2 : &quirk_1;
190 snd_printdd("usX2Y_create_usbmidi \n");
191 return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk);
194 static int usX2Y_create_alsa_devices(snd_card_t* card)
199 if ((err = usX2Y_create_usbmidi(card)) < 0) {
200 snd_printk("usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
203 if ((err = usX2Y_audio_create(card)) < 0)
205 if ((err = snd_card_register(card)) < 0)
212 static int snd_usX2Y_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
214 usX2Ydev_t *priv = hw->private_data;
215 int lret, err = -EINVAL;
216 snd_printdd( "dsp_load %s\n", dsp->name);
218 if (access_ok(VERIFY_READ, dsp->image, dsp->length)) {
219 struct usb_device* dev = priv->chip.dev;
220 char *buf = kmalloc(dsp->length, GFP_KERNEL);
223 if (copy_from_user(buf, dsp->image, dsp->length)) {
227 err = usb_set_interface(dev, 0, 1);
229 snd_printk("usb_set_interface error \n");
231 err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6*HZ);
236 if (dsp->index == 1) {
237 set_current_state(TASK_UNINTERRUPTIBLE);
238 schedule_timeout(HZ/4); // give the device some time
239 err = usX2Y_AsyncSeq04_init(priv);
241 snd_printk("usX2Y_AsyncSeq04_init error \n");
244 err = usX2Y_In04_init(priv);
246 snd_printk("usX2Y_In04_init error \n");
249 err = usX2Y_create_alsa_devices(hw->card);
251 snd_printk("usX2Y_create_alsa_devices error %i \n", err);
252 snd_card_free(hw->card);
255 priv->chip_status |= USX2Y_STAT_CHIP_INIT;
256 snd_printdd("%s: alsa all started\n", hw->name);
262 int usX2Y_hwdep_new(snd_card_t* card, struct usb_device* device)
267 if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
270 hw->iface = SNDRV_HWDEP_IFACE_USX2Y;
271 hw->private_data = usX2Y(card);
272 hw->ops.open = snd_usX2Y_hwdep_open;
273 hw->ops.release = snd_usX2Y_hwdep_release;
274 hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status;
275 hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load;
276 hw->ops.mmap = snd_us428ctls_mmap;
277 hw->ops.poll = snd_us428ctls_poll;
279 sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);