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 <linux/interrupt.h>
24 #include <linux/usb.h>
25 #include <sound/core.h>
26 #include <sound/memalloc.h>
27 #include <sound/pcm.h>
28 #include <sound/hwdep.h>
29 #include "usx2y.h"
30 #include "usbusx2y.h"
31 #include "usX2Yhwdep.h"
32
33 static int snd_us428ctls_vm_fault(struct vm_area_struct *area,
34 struct vm_fault *vmf)
35 {
36 unsigned long offset;
37 struct page * page;
38 void *vaddr;
39
40 snd_printdd("ENTER, start %lXh, pgoff %ld\n",
41 area->vm_start,
42 vmf->pgoff);
43
44 offset = vmf->pgoff << PAGE_SHIFT;
45 vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset;
46 page = virt_to_page(vaddr);
47 get_page(page);
48 vmf->page = page;
49
50 snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n",
51 vaddr, page);
52
53 return 0;
54 }
55
56 static struct vm_operations_struct us428ctls_vm_ops = {
57 .fault = snd_us428ctls_vm_fault,
58 };
59
60 static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
61 {
62 unsigned long size = (unsigned long)(area->vm_end - area->vm_start);
63 struct usX2Ydev *us428 = hw->private_data;
64
65 // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
66 // so as long as the device isn't fully initialised yet we return -EBUSY here.
67 if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT))
68 return -EBUSY;
69
70 /* if userspace tries to mmap beyond end of our buffer, fail */
71 if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
72 snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem));
73 return -EINVAL;
74 }
75
76 if (!us428->us428ctls_sharedmem) {
77 init_waitqueue_head(&us428->us428ctls_wait_queue_head);
78 if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL)))
79 return -ENOMEM;
80 memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem));
81 us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
82 }
83 area->vm_ops = &us428ctls_vm_ops;
84 area->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
85 area->vm_private_data = hw->private_data;
86 return 0;
87 }
88
89 static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
90 {
91 unsigned int mask = 0;
92 struct usX2Ydev *us428 = hw->private_data;
93 struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
94 if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
95 return POLLHUP;
96
97 poll_wait(file, &us428->us428ctls_wait_queue_head, wait);
98
99 if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed)
100 mask |= POLLIN;
101
102 return mask;
103 }
104
105
106 static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
107 struct snd_hwdep_dsp_status *info)
108 {
109 static char *type_ids[USX2Y_TYPE_NUMS] = {
110 [USX2Y_TYPE_122] = "us122",
111 [USX2Y_TYPE_224] = "us224",
112 [USX2Y_TYPE_428] = "us428",
113 };
114 struct usX2Ydev *us428 = hw->private_data;
115 int id = -1;
116
117 switch (le16_to_cpu(us428->chip.dev->descriptor.idProduct)) {
118 case USB_ID_US122:
119 id = USX2Y_TYPE_122;
120 break;
121 case USB_ID_US224:
122 id = USX2Y_TYPE_224;
123 break;
124 case USB_ID_US428:
125 id = USX2Y_TYPE_428;
126 break;
127 }
128 if (0 > id)
129 return -ENODEV;
130 strcpy(info->id, type_ids[id]);
131 info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code
132 if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
133 info->chip_ready = 1;
134 info->version = USX2Y_DRIVER_VERSION;
135 return 0;
136 }
137
138
139 static int usX2Y_create_usbmidi(struct snd_card *card)
140 {
141 static struct snd_usb_midi_endpoint_info quirk_data_1 = {
142 .out_ep = 0x06,
143 .in_ep = 0x06,
144 .out_cables = 0x001,
145 .in_cables = 0x001
146 };
147 static struct snd_usb_audio_quirk quirk_1 = {
148 .vendor_name = "TASCAM",
149 .product_name = NAME_ALLCAPS,
150 .ifnum = 0,
151 .type = QUIRK_MIDI_FIXED_ENDPOINT,
152 .data = &quirk_data_1
153 };
154 static struct snd_usb_midi_endpoint_info quirk_data_2 = {
155 .out_ep = 0x06,
156 .in_ep = 0x06,
157 .out_cables = 0x003,
158 .in_cables = 0x003
159 };
160 static struct snd_usb_audio_quirk quirk_2 = {
161 .vendor_name = "TASCAM",
162 .product_name = "US428",
163 .ifnum = 0,
164 .type = QUIRK_MIDI_FIXED_ENDPOINT,
165 .data = &quirk_data_2
166 };
167 struct usb_device *dev = usX2Y(card)->chip.dev;
168 struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
169 struct snd_usb_audio_quirk *quirk =
170 le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
171 &quirk_2 : &quirk_1;
172
173 snd_printdd("usX2Y_create_usbmidi \n");
174 return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk);
175 }
176
177 static int usX2Y_create_alsa_devices(struct snd_card *card)
178 {
179 int err;
180
181 do {
182 if ((err = usX2Y_create_usbmidi(card)) < 0) {
183 snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
184 break;
185 }
186 if ((err = usX2Y_audio_create(card)) < 0)
187 break;
188 if ((err = usX2Y_hwdep_pcm_new(card)) < 0)
189 break;
190 if ((err = snd_card_register(card)) < 0)
191 break;
192 } while (0);
193
194 return err;
195 }
196
197 static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
198 struct snd_hwdep_dsp_image *dsp)
199 {
200 struct usX2Ydev *priv = hw->private_data;
201 int lret, err = -EINVAL;
202 snd_printdd( "dsp_load %s\n", dsp->name);
203
204 if (access_ok(VERIFY_READ, dsp->image, dsp->length)) {
205 struct usb_device* dev = priv->chip.dev;
206 char *buf;
207
208 buf = memdup_user(dsp->image, dsp->length);
209 if (IS_ERR(buf))
210 return PTR_ERR(buf);
211
212 err = usb_set_interface(dev, 0, 1);
213 if (err)
214 snd_printk(KERN_ERR "usb_set_interface error \n");
215 else
216 err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000);
217 kfree(buf);
218 }
219 if (err)
220 return err;
221 if (dsp->index == 1) {
222 msleep(250); // give the device some time
223 err = usX2Y_AsyncSeq04_init(priv);
224 if (err) {
225 snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n");
226 return err;
227 }
228 err = usX2Y_In04_init(priv);
229 if (err) {
230 snd_printk(KERN_ERR "usX2Y_In04_init error \n");
231 return err;
232 }
233 err = usX2Y_create_alsa_devices(hw->card);
234 if (err) {
235 snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err);
236 snd_card_free(hw->card);
237 return err;
238 }
239 priv->chip_status |= USX2Y_STAT_CHIP_INIT;
240 snd_printdd("%s: alsa all started\n", hw->name);
241 }
242 return err;
243 }
244
245
246 int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device)
247 {
248 int err;
249 struct snd_hwdep *hw;
250
251 if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
252 return err;
253
254 hw->iface = SNDRV_HWDEP_IFACE_USX2Y;
255 hw->private_data = usX2Y(card);
256 hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status;
257 hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load;
258 hw->ops.mmap = snd_us428ctls_mmap;
259 hw->ops.poll = snd_us428ctls_poll;
260 hw->exclusive = 1;
261 sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);
262 return 0;
263 }
264
265
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