1 /*
2 * Driver for Tascam US-X2Y USB soundcards
3 *
4 * FPGA Loader + ALSA Startup
5 *
6 * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
7 *
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.
12 *
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.
17 *
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
21 */
22
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>
30 #include "usx2y.h"
31 #include "usbusx2y.h"
32 #include "usX2Yhwdep.h"
33
34 int usX2Y_hwdep_pcm_new(snd_card_t* card);
35
36
37 static struct page * snd_us428ctls_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
38 {
39 unsigned long offset;
40 struct page * page;
41 void *vaddr;
42
43 snd_printdd("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n",
44 area->vm_start,
45 address - area->vm_start,
46 (address - area->vm_start) >> PAGE_SHIFT,
47 address);
48
49 offset = area->vm_pgoff << PAGE_SHIFT;
50 offset += address - area->vm_start;
51 snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM);
52 vaddr = (char*)((usX2Ydev_t*)area->vm_private_data)->us428ctls_sharedmem + offset;
53 page = virt_to_page(vaddr);
54 get_page(page);
55 snd_printdd( "vaddr=%p made us428ctls_vm_nopage() return %p; offset=%lX\n", vaddr, page, offset);
56
57 if (type)
58 *type = VM_FAULT_MINOR;
59
60 return page;
61 }
62
63 static struct vm_operations_struct us428ctls_vm_ops = {
64 .nopage = snd_us428ctls_vm_nopage,
65 };
66
67 static int snd_us428ctls_mmap(snd_hwdep_t * hw, struct file *filp, struct vm_area_struct *area)
68 {
69 unsigned long size = (unsigned long)(area->vm_end - area->vm_start);
70 usX2Ydev_t *us428 = (usX2Ydev_t*)hw->private_data;
71
72 // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
73 // so as long as the device isn't fully initialised yet we return -EBUSY here.
74 if (!(((usX2Ydev_t*)hw->private_data)->chip_status & USX2Y_STAT_CHIP_INIT))
75 return -EBUSY;
76
77 /* if userspace tries to mmap beyond end of our buffer, fail */
78 if (size > ((PAGE_SIZE - 1 + sizeof(us428ctls_sharedmem_t)) / PAGE_SIZE) * PAGE_SIZE) {
79 snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(us428ctls_sharedmem_t));
80 return -EINVAL;
81 }
82
83 if (!us428->us428ctls_sharedmem) {
84 init_waitqueue_head(&us428->us428ctls_wait_queue_head);
85 if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(us428ctls_sharedmem_t), GFP_KERNEL)))
86 return -ENOMEM;
87 memset(us428->us428ctls_sharedmem, -1, sizeof(us428ctls_sharedmem_t));
88 us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
89 }
90 area->vm_ops = &us428ctls_vm_ops;
91 area->vm_flags |= VM_RESERVED;
92 area->vm_private_data = hw->private_data;
93 return 0;
94 }
95
96 static unsigned int snd_us428ctls_poll(snd_hwdep_t *hw, struct file *file, poll_table *wait)
97 {
98 unsigned int mask = 0;
99 usX2Ydev_t *us428 = (usX2Ydev_t*)hw->private_data;
100 us428ctls_sharedmem_t *shm = us428->us428ctls_sharedmem;
101 if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
102 return POLLHUP;
103
104 poll_wait(file, &us428->us428ctls_wait_queue_head, wait);
105
106 if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed)
107 mask |= POLLIN;
108
109 return mask;
110 }
111
112
113 static int snd_usX2Y_hwdep_open(snd_hwdep_t *hw, struct file *file)
114 {
115 return 0;
116 }
117
118 static int snd_usX2Y_hwdep_release(snd_hwdep_t *hw, struct file *file)
119 {
120 return 0;
121 }
122
123 static int snd_usX2Y_hwdep_dsp_status(snd_hwdep_t *hw, snd_hwdep_dsp_status_t *info)
124 {
125 static char *type_ids[USX2Y_TYPE_NUMS] = {
126 [USX2Y_TYPE_122] = "us122",
127 [USX2Y_TYPE_224] = "us224",
128 [USX2Y_TYPE_428] = "us428",
129 };
130 int id = -1;
131
132 switch (le16_to_cpu(((usX2Ydev_t*)hw->private_data)->chip.dev->descriptor.idProduct)) {
133 case USB_ID_US122:
134 id = USX2Y_TYPE_122;
135 break;
136 case USB_ID_US224:
137 id = USX2Y_TYPE_224;
138 break;
139 case USB_ID_US428:
140 id = USX2Y_TYPE_428;
141 break;
142 }
143 if (0 > id)
144 return -ENODEV;
145 strcpy(info->id, type_ids[id]);
146 info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code
147 if (((usX2Ydev_t*)hw->private_data)->chip_status & USX2Y_STAT_CHIP_INIT)
148 info->chip_ready = 1;
149 info->version = USX2Y_DRIVER_VERSION;
150 return 0;
151 }
152
153
154 static int usX2Y_create_usbmidi(snd_card_t* card )
155 {
156 static snd_usb_midi_endpoint_info_t quirk_data_1 = {
157 .out_ep =0x06,
158 .in_ep = 0x06,
159 .out_cables = 0x001,
160 .in_cables = 0x001
161 };
162 static snd_usb_audio_quirk_t quirk_1 = {
163 .vendor_name = "TASCAM",
164 .product_name = NAME_ALLCAPS,
165 .ifnum = 0,
166 .type = QUIRK_MIDI_FIXED_ENDPOINT,
167 .data = &quirk_data_1
168 };
169 static snd_usb_midi_endpoint_info_t quirk_data_2 = {
170 .out_ep =0x06,
171 .in_ep = 0x06,
172 .out_cables = 0x003,
173 .in_cables = 0x003
174 };
175 static snd_usb_audio_quirk_t quirk_2 = {
176 .vendor_name = "TASCAM",
177 .product_name = "US428",
178 .ifnum = 0,
179 .type = QUIRK_MIDI_FIXED_ENDPOINT,
180 .data = &quirk_data_2
181 };
182 struct usb_device *dev = usX2Y(card)->chip.dev;
183 struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
184 snd_usb_audio_quirk_t *quirk = le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? &quirk_2 : &quirk_1;
185
186 snd_printdd("usX2Y_create_usbmidi \n");
187 return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk);
188 }
189
190 static int usX2Y_create_alsa_devices(snd_card_t* card)
191 {
192 int err;
193
194 do {
195 if ((err = usX2Y_create_usbmidi(card)) < 0) {
196 snd_printk("usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
197 break;
198 }
199 if ((err = usX2Y_audio_create(card)) < 0)
200 break;
201 if ((err = usX2Y_hwdep_pcm_new(card)) < 0)
202 break;
203 if ((err = snd_card_register(card)) < 0)
204 break;
205 } while (0);
206
207 return err;
208 }
209
210 static int snd_usX2Y_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
211 {
212 usX2Ydev_t *priv = hw->private_data;
213 int lret, err = -EINVAL;
214 snd_printdd( "dsp_load %s\n", dsp->name);
215
216 if (access_ok(VERIFY_READ, dsp->image, dsp->length)) {
217 struct usb_device* dev = priv->chip.dev;
218 char *buf = kmalloc(dsp->length, GFP_KERNEL);
219 if (!buf)
220 return -ENOMEM;
221 if (copy_from_user(buf, dsp->image, dsp->length)) {
222 kfree(buf);
223 return -EFAULT;
224 }
225 err = usb_set_interface(dev, 0, 1);
226 if (err)
227 snd_printk("usb_set_interface error \n");
228 else
229 err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6*HZ);
230 kfree(buf);
231 }
232 if (err)
233 return err;
234 if (dsp->index == 1) {
235 set_current_state(TASK_UNINTERRUPTIBLE);
236 schedule_timeout(HZ/4); // give the device some time
237 err = usX2Y_AsyncSeq04_init(priv);
238 if (err) {
239 snd_printk("usX2Y_AsyncSeq04_init error \n");
240 return err;
241 }
242 err = usX2Y_In04_init(priv);
243 if (err) {
244 snd_printk("usX2Y_In04_init error \n");
245 return err;
246 }
247 err = usX2Y_create_alsa_devices(hw->card);
248 if (err) {
249 snd_printk("usX2Y_create_alsa_devices error %i \n", err);
250 snd_card_free(hw->card);
251 return err;
252 }
253 priv->chip_status |= USX2Y_STAT_CHIP_INIT;
254 snd_printdd("%s: alsa all started\n", hw->name);
255 }
256 return err;
257 }
258
259
260 int usX2Y_hwdep_new(snd_card_t* card, struct usb_device* device)
261 {
262 int err;
263 snd_hwdep_t *hw;
264
265 if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
266 return err;
267
268 hw->iface = SNDRV_HWDEP_IFACE_USX2Y;
269 hw->private_data = usX2Y(card);
270 hw->ops.open = snd_usX2Y_hwdep_open;
271 hw->ops.release = snd_usX2Y_hwdep_release;
272 hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status;
273 hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load;
274 hw->ops.mmap = snd_us428ctls_mmap;
275 hw->ops.poll = snd_us428ctls_poll;
276 hw->exclusive = 1;
277 sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);
278 return 0;
279 }
280
281
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