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Commit | Line | Data |
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265a6510 ST |
1 | /* |
2 | * Driver for the Auvitek USB bridge | |
3 | * | |
6d897616 | 4 | * Copyright (c) 2008 Steven Toth <stoth@linuxtv.org> |
265a6510 ST |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
5a0e3ad6 | 23 | #include <linux/slab.h> |
265a6510 ST |
24 | #include <linux/videodev2.h> |
25 | #include <media/v4l2-common.h> | |
26 | #include <linux/mutex.h> | |
27 | ||
28 | #include "au0828.h" | |
29 | ||
bc3c613c ST |
30 | /* |
31 | * 1 = General debug messages | |
32 | * 2 = USB handling | |
33 | * 4 = I2C related | |
34 | * 8 = Bridge related | |
35 | */ | |
b33d24c4 AB |
36 | int au0828_debug; |
37 | module_param_named(debug, au0828_debug, int, 0644); | |
265a6510 ST |
38 | MODULE_PARM_DESC(debug, "enable debug messages"); |
39 | ||
d6a9a430 DH |
40 | static unsigned int disable_usb_speed_check; |
41 | module_param(disable_usb_speed_check, int, 0444); | |
42 | MODULE_PARM_DESC(disable_usb_speed_check, | |
43 | "override min bandwidth requirement of 480M bps"); | |
44 | ||
265a6510 ST |
45 | #define _AU0828_BULKPIPE 0x03 |
46 | #define _BULKPIPESIZE 0xffff | |
47 | ||
48 | static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, | |
49 | u16 index, unsigned char *cp, u16 size); | |
50 | static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value, | |
51 | u16 index, unsigned char *cp, u16 size); | |
52 | ||
53 | /* USB Direction */ | |
54 | #define CMD_REQUEST_IN 0x00 | |
55 | #define CMD_REQUEST_OUT 0x01 | |
56 | ||
57 | u32 au0828_readreg(struct au0828_dev *dev, u16 reg) | |
58 | { | |
59 | recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, dev->ctrlmsg, 1); | |
b80f770a | 60 | dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, dev->ctrlmsg[0]); |
265a6510 ST |
61 | return dev->ctrlmsg[0]; |
62 | } | |
63 | ||
64 | u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val) | |
65 | { | |
b80f770a | 66 | dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val); |
18d73c58 MCC |
67 | return send_control_msg(dev, CMD_REQUEST_OUT, val, reg, |
68 | dev->ctrlmsg, 0); | |
265a6510 ST |
69 | } |
70 | ||
71 | static void cmd_msg_dump(struct au0828_dev *dev) | |
72 | { | |
73 | int i; | |
74 | ||
18d73c58 MCC |
75 | for (i = 0; i < sizeof(dev->ctrlmsg); i += 16) |
76 | dprintk(2, "%s() %02x %02x %02x %02x %02x %02x %02x %02x " | |
77 | "%02x %02x %02x %02x %02x %02x %02x %02x\n", | |
f07e8e4b | 78 | __func__, |
265a6510 ST |
79 | dev->ctrlmsg[i+0], dev->ctrlmsg[i+1], |
80 | dev->ctrlmsg[i+2], dev->ctrlmsg[i+3], | |
81 | dev->ctrlmsg[i+4], dev->ctrlmsg[i+5], | |
82 | dev->ctrlmsg[i+6], dev->ctrlmsg[i+7], | |
83 | dev->ctrlmsg[i+8], dev->ctrlmsg[i+9], | |
84 | dev->ctrlmsg[i+10], dev->ctrlmsg[i+11], | |
85 | dev->ctrlmsg[i+12], dev->ctrlmsg[i+13], | |
86 | dev->ctrlmsg[i+14], dev->ctrlmsg[i+15]); | |
87 | } | |
88 | ||
89 | static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value, | |
90 | u16 index, unsigned char *cp, u16 size) | |
91 | { | |
92 | int status = -ENODEV; | |
93 | mutex_lock(&dev->mutex); | |
94 | if (dev->usbdev) { | |
95 | ||
96 | /* cp must be memory that has been allocated by kmalloc */ | |
97 | status = usb_control_msg(dev->usbdev, | |
98 | usb_sndctrlpipe(dev->usbdev, 0), | |
99 | request, | |
a8eb912c ST |
100 | USB_DIR_OUT | USB_TYPE_VENDOR | |
101 | USB_RECIP_DEVICE, | |
265a6510 ST |
102 | value, index, |
103 | cp, size, 1000); | |
104 | ||
105 | status = min(status, 0); | |
106 | ||
107 | if (status < 0) { | |
bc3c613c | 108 | printk(KERN_ERR "%s() Failed sending control message, error %d.\n", |
f07e8e4b | 109 | __func__, status); |
265a6510 ST |
110 | } |
111 | ||
112 | } | |
113 | mutex_unlock(&dev->mutex); | |
114 | return status; | |
115 | } | |
116 | ||
117 | static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value, | |
118 | u16 index, unsigned char *cp, u16 size) | |
119 | { | |
120 | int status = -ENODEV; | |
121 | mutex_lock(&dev->mutex); | |
122 | if (dev->usbdev) { | |
123 | ||
124 | memset(dev->ctrlmsg, 0, sizeof(dev->ctrlmsg)); | |
125 | ||
126 | /* cp must be memory that has been allocated by kmalloc */ | |
127 | status = usb_control_msg(dev->usbdev, | |
128 | usb_rcvctrlpipe(dev->usbdev, 0), | |
129 | request, | |
130 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
131 | value, index, | |
132 | cp, size, 1000); | |
133 | ||
134 | status = min(status, 0); | |
135 | ||
136 | if (status < 0) { | |
bc3c613c | 137 | printk(KERN_ERR "%s() Failed receiving control message, error %d.\n", |
f07e8e4b | 138 | __func__, status); |
18d73c58 | 139 | } else |
bc3c613c | 140 | cmd_msg_dump(dev); |
265a6510 ST |
141 | } |
142 | mutex_unlock(&dev->mutex); | |
143 | return status; | |
144 | } | |
a9c36aad | 145 | |
265a6510 ST |
146 | static void au0828_usb_disconnect(struct usb_interface *interface) |
147 | { | |
148 | struct au0828_dev *dev = usb_get_intfdata(interface); | |
149 | ||
f07e8e4b | 150 | dprintk(1, "%s()\n", __func__); |
265a6510 ST |
151 | |
152 | /* Digital TV */ | |
153 | au0828_dvb_unregister(dev); | |
154 | ||
220be77c | 155 | if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) |
f1add5b5 | 156 | au0828_analog_unregister(dev); |
8b2f0795 | 157 | |
265a6510 ST |
158 | /* I2C */ |
159 | au0828_i2c_unregister(dev); | |
160 | ||
b14667f3 DH |
161 | v4l2_device_unregister(&dev->v4l2_dev); |
162 | ||
265a6510 ST |
163 | usb_set_intfdata(interface, NULL); |
164 | ||
165 | mutex_lock(&dev->mutex); | |
166 | dev->usbdev = NULL; | |
167 | mutex_unlock(&dev->mutex); | |
168 | ||
169 | kfree(dev); | |
170 | ||
171 | } | |
172 | ||
18d73c58 | 173 | static int au0828_usb_probe(struct usb_interface *interface, |
265a6510 ST |
174 | const struct usb_device_id *id) |
175 | { | |
4bb68510 | 176 | int ifnum, retval; |
265a6510 ST |
177 | struct au0828_dev *dev; |
178 | struct usb_device *usbdev = interface_to_usbdev(interface); | |
179 | ||
180 | ifnum = interface->altsetting->desc.bInterfaceNumber; | |
181 | ||
182 | if (ifnum != 0) | |
183 | return -ENODEV; | |
184 | ||
a9c36aad | 185 | dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__, |
265a6510 ST |
186 | le16_to_cpu(usbdev->descriptor.idVendor), |
187 | le16_to_cpu(usbdev->descriptor.idProduct), | |
188 | ifnum); | |
189 | ||
ee3436b8 DH |
190 | /* |
191 | * Make sure we have 480 Mbps of bandwidth, otherwise things like | |
192 | * video stream wouldn't likely work, since 12 Mbps is generally | |
193 | * not enough even for most Digital TV streams. | |
194 | */ | |
d6a9a430 | 195 | if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) { |
ee3436b8 DH |
196 | printk(KERN_ERR "au0828: Device initialization failed.\n"); |
197 | printk(KERN_ERR "au0828: Device must be connected to a " | |
198 | "high-speed USB 2.0 port.\n"); | |
199 | return -ENODEV; | |
200 | } | |
201 | ||
265a6510 ST |
202 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
203 | if (dev == NULL) { | |
f07e8e4b | 204 | printk(KERN_ERR "%s() Unable to allocate memory\n", __func__); |
265a6510 ST |
205 | return -ENOMEM; |
206 | } | |
207 | ||
208 | mutex_init(&dev->mutex); | |
209 | mutex_init(&dev->dvb.lock); | |
210 | dev->usbdev = usbdev; | |
f1add5b5 | 211 | dev->boardnr = id->driver_info; |
265a6510 | 212 | |
b14667f3 | 213 | /* Create the v4l2_device */ |
a4124aa9 | 214 | retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev); |
b14667f3 DH |
215 | if (retval) { |
216 | printk(KERN_ERR "%s() v4l2_device_register failed\n", | |
217 | __func__); | |
218 | kfree(dev); | |
219 | return -EIO; | |
220 | } | |
221 | ||
265a6510 ST |
222 | /* Power Up the bridge */ |
223 | au0828_write(dev, REG_600, 1 << 4); | |
224 | ||
225 | /* Bring up the GPIO's and supporting devices */ | |
226 | au0828_gpio_setup(dev); | |
227 | ||
228 | /* I2C */ | |
229 | au0828_i2c_register(dev); | |
230 | ||
28930fa9 ST |
231 | /* Setup */ |
232 | au0828_card_setup(dev); | |
233 | ||
8b2f0795 | 234 | /* Analog TV */ |
220be77c | 235 | if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) |
fc4ce6cd | 236 | au0828_analog_register(dev, interface); |
8b2f0795 | 237 | |
265a6510 ST |
238 | /* Digital TV */ |
239 | au0828_dvb_register(dev); | |
240 | ||
fe78a49c DH |
241 | /* Store the pointer to the au0828_dev so it can be accessed in |
242 | au0828_usb_disconnect */ | |
243 | usb_set_intfdata(interface, dev); | |
244 | ||
bc3c613c | 245 | printk(KERN_INFO "Registered device AU0828 [%s]\n", |
f1add5b5 | 246 | dev->board.name == NULL ? "Unset" : dev->board.name); |
265a6510 ST |
247 | |
248 | return 0; | |
249 | } | |
250 | ||
251 | static struct usb_driver au0828_usb_driver = { | |
252 | .name = DRIVER_NAME, | |
253 | .probe = au0828_usb_probe, | |
254 | .disconnect = au0828_usb_disconnect, | |
255 | .id_table = au0828_usb_id_table, | |
256 | }; | |
257 | ||
258 | static int __init au0828_init(void) | |
259 | { | |
260 | int ret; | |
261 | ||
b33d24c4 | 262 | if (au0828_debug & 1) |
f07e8e4b | 263 | printk(KERN_INFO "%s() Debugging is enabled\n", __func__); |
bc3c613c | 264 | |
b33d24c4 | 265 | if (au0828_debug & 2) |
f07e8e4b | 266 | printk(KERN_INFO "%s() USB Debugging is enabled\n", __func__); |
bc3c613c | 267 | |
b33d24c4 | 268 | if (au0828_debug & 4) |
f07e8e4b | 269 | printk(KERN_INFO "%s() I2C Debugging is enabled\n", __func__); |
bc3c613c | 270 | |
b33d24c4 | 271 | if (au0828_debug & 8) |
f07e8e4b MK |
272 | printk(KERN_INFO "%s() Bridge Debugging is enabled\n", |
273 | __func__); | |
bc3c613c ST |
274 | |
275 | printk(KERN_INFO "au0828 driver loaded\n"); | |
265a6510 ST |
276 | |
277 | ret = usb_register(&au0828_usb_driver); | |
278 | if (ret) | |
bc3c613c | 279 | printk(KERN_ERR "usb_register failed, error = %d\n", ret); |
265a6510 ST |
280 | |
281 | return ret; | |
282 | } | |
283 | ||
284 | static void __exit au0828_exit(void) | |
285 | { | |
286 | usb_deregister(&au0828_usb_driver); | |
287 | } | |
288 | ||
289 | module_init(au0828_init); | |
290 | module_exit(au0828_exit); | |
291 | ||
292 | MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products"); | |
6d897616 | 293 | MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>"); |
265a6510 | 294 | MODULE_LICENSE("GPL"); |