1 /*
2 * Driver for the Auvitek AU0828 USB bridge
3 *
4 * Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
23
24 #include <linux/bitops.h>
25 #include <linux/usb.h>
26 #include <linux/i2c.h>
27 #include <linux/i2c-algo-bit.h>
28 #include <media/tveeprom.h>
29
30 /* Analog */
31 #include <linux/videodev2.h>
32 #include <media/videobuf2-v4l2.h>
33 #include <media/videobuf2-vmalloc.h>
34 #include <media/v4l2-device.h>
35 #include <media/v4l2-ctrls.h>
36 #include <media/v4l2-fh.h>
37 #include <media/media-device.h>
38
39 /* DVB */
40 #include "demux.h"
41 #include "dmxdev.h"
42 #include "dvb_demux.h"
43 #include "dvb_frontend.h"
44 #include "dvb_net.h"
45 #include "dvbdev.h"
46
47 #include "au0828-reg.h"
48 #include "au0828-cards.h"
49
50 #define URB_COUNT 16
51 #define URB_BUFSIZE (0xe522)
52
53 /* Analog constants */
54 #define NTSC_STD_W 720
55 #define NTSC_STD_H 480
56
57 #define AU0828_INTERLACED_DEFAULT 1
58
59 /* Defination for AU0828 USB transfer */
60 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */
61 #define AU0828_ISO_PACKETS_PER_URB 128
62
63 #define AU0828_MIN_BUF 4
64 #define AU0828_DEF_BUF 8
65
66 #define AU0828_MAX_INPUT 4
67
68 /* au0828 resource types (used for res_get/res_lock etc */
69 #define AU0828_RESOURCE_VIDEO 0x01
70 #define AU0828_RESOURCE_VBI 0x02
71
72 enum au0828_itype {
73 AU0828_VMUX_UNDEFINED = 0,
74 AU0828_VMUX_COMPOSITE,
75 AU0828_VMUX_SVIDEO,
76 AU0828_VMUX_CABLE,
77 AU0828_VMUX_TELEVISION,
78 AU0828_VMUX_DVB,
79 };
80
81 struct au0828_input {
82 enum au0828_itype type;
83 unsigned int vmux;
84 unsigned int amux;
85 void (*audio_setup) (void *priv, int enable);
86 };
87
88 struct au0828_board {
89 char *name;
90 unsigned int tuner_type;
91 unsigned char tuner_addr;
92 unsigned char i2c_clk_divider;
93 unsigned char has_ir_i2c:1;
94 unsigned char has_analog:1;
95 struct au0828_input input[AU0828_MAX_INPUT];
96 };
97
98 struct au0828_dvb {
99 struct mutex lock;
100 struct dvb_adapter adapter;
101 struct dvb_frontend *frontend;
102 struct dvb_demux demux;
103 struct dmxdev dmxdev;
104 struct dmx_frontend fe_hw;
105 struct dmx_frontend fe_mem;
106 struct dvb_net net;
107 int feeding;
108 int start_count;
109 int stop_count;
110
111 int (*set_frontend)(struct dvb_frontend *fe);
112 };
113
114 enum au0828_stream_state {
115 STREAM_OFF,
116 STREAM_INTERRUPT,
117 STREAM_ON
118 };
119
120 #define AUVI_INPUT(nr) (dev->board.input[nr])
121
122 /* device state */
123 enum au0828_dev_state {
124 DEV_INITIALIZED = 0,
125 DEV_DISCONNECTED = 1,
126 DEV_MISCONFIGURED = 2
127 };
128
129 struct au0828_dev;
130
131 struct au0828_usb_isoc_ctl {
132 /* max packet size of isoc transaction */
133 int max_pkt_size;
134
135 /* number of allocated urbs */
136 int num_bufs;
137
138 /* urb for isoc transfers */
139 struct urb **urb;
140
141 /* transfer buffers for isoc transfer */
142 char **transfer_buffer;
143
144 /* Last buffer command and region */
145 u8 cmd;
146 int pos, size, pktsize;
147
148 /* Last field: ODD or EVEN? */
149 int field;
150
151 /* Stores incomplete commands */
152 u32 tmp_buf;
153 int tmp_buf_len;
154
155 /* Stores already requested buffers */
156 struct au0828_buffer *buf;
157 struct au0828_buffer *vbi_buf;
158
159 /* Stores the number of received fields */
160 int nfields;
161
162 /* isoc urb callback */
163 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
164
165 };
166
167 /* buffer for one video frame */
168 struct au0828_buffer {
169 /* common v4l buffer stuff -- must be first */
170 struct vb2_v4l2_buffer vb;
171 struct list_head list;
172
173 void *mem;
174 unsigned long length;
175 int top_field;
176 /* pointer to vmalloc memory address in vb */
177 char *vb_buf;
178 };
179
180 struct au0828_dmaqueue {
181 struct list_head active;
182 /* Counters to control buffer fill */
183 int pos;
184 };
185
186 struct au0828_dev {
187 struct mutex mutex;
188 struct usb_device *usbdev;
189 int boardnr;
190 struct au0828_board board;
191 u8 ctrlmsg[64];
192
193 /* I2C */
194 struct i2c_adapter i2c_adap;
195 struct i2c_algorithm i2c_algo;
196 struct i2c_client i2c_client;
197 u32 i2c_rc;
198
199 /* Digital */
200 struct au0828_dvb dvb;
201 struct work_struct restart_streaming;
202
203 #ifdef CONFIG_VIDEO_AU0828_V4L2
204 /* Analog */
205 struct v4l2_device v4l2_dev;
206 struct v4l2_ctrl_handler v4l2_ctrl_hdl;
207 #endif
208 #ifdef CONFIG_VIDEO_AU0828_RC
209 struct au0828_rc *ir;
210 #endif
211
212 struct video_device vdev;
213 struct video_device vbi_dev;
214
215 /* Videobuf2 */
216 struct vb2_queue vb_vidq;
217 struct vb2_queue vb_vbiq;
218 struct mutex vb_queue_lock;
219 struct mutex vb_vbi_queue_lock;
220
221 unsigned int frame_count;
222 unsigned int vbi_frame_count;
223
224 struct timer_list vid_timeout;
225 int vid_timeout_running;
226 struct timer_list vbi_timeout;
227 int vbi_timeout_running;
228
229 int users;
230 int streaming_users;
231
232 int width;
233 int height;
234 int vbi_width;
235 int vbi_height;
236 u32 vbi_read;
237 v4l2_std_id std;
238 u32 field_size;
239 u32 frame_size;
240 u32 bytesperline;
241 int type;
242 u8 ctrl_ainput;
243 __u8 isoc_in_endpointaddr;
244 u8 isoc_init_ok;
245 int greenscreen_detected;
246 int ctrl_freq;
247 int input_type;
248 int std_set_in_tuner_core;
249 unsigned int ctrl_input;
250 long unsigned int dev_state; /* defined at enum au0828_dev_state */;
251 enum au0828_stream_state stream_state;
252 wait_queue_head_t open;
253
254 struct mutex lock;
255
256 /* Isoc control struct */
257 struct au0828_dmaqueue vidq;
258 struct au0828_dmaqueue vbiq;
259 struct au0828_usb_isoc_ctl isoc_ctl;
260 spinlock_t slock;
261
262 /* usb transfer */
263 int alt; /* alternate */
264 int max_pkt_size; /* max packet size of isoc transaction */
265 int num_alt; /* Number of alternative settings */
266 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
267 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */
268 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
269 transfer */
270
271 /* DVB USB / URB Related */
272 bool urb_streaming, need_urb_start;
273 struct urb *urbs[URB_COUNT];
274
275 /* Preallocated transfer digital transfer buffers */
276
277 char *dig_transfer_buffer[URB_COUNT];
278
279 #ifdef CONFIG_MEDIA_CONTROLLER
280 struct media_device *media_dev;
281 struct media_pad video_pad, vbi_pad;
282 struct media_entity *decoder;
283 struct media_entity input_ent[AU0828_MAX_INPUT];
284 struct media_pad input_pad[AU0828_MAX_INPUT];
285 struct media_entity_notify entity_notify;
286 struct media_entity *tuner;
287 struct media_link *active_link;
288 struct media_entity *active_link_owner;
289 struct media_entity *active_source;
290 struct media_entity *active_sink;
291 #endif
292 };
293
294
295 /* ----------------------------------------------------------- */
296 #define au0828_read(dev, reg) au0828_readreg(dev, reg)
297 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
298 #define au0828_andor(dev, reg, mask, value) \
299 au0828_writereg(dev, reg, \
300 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
301
302 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
303 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
304
305 /* ----------------------------------------------------------- */
306 /* au0828-core.c */
307 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
308 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
309 extern void au0828_usb_release(struct au0828_dev *dev);
310 extern int au0828_debug;
311
312 /* ----------------------------------------------------------- */
313 /* au0828-cards.c */
314 extern struct au0828_board au0828_boards[];
315 extern struct usb_device_id au0828_usb_id_table[];
316 extern void au0828_gpio_setup(struct au0828_dev *dev);
317 extern int au0828_tuner_callback(void *priv, int component,
318 int command, int arg);
319 extern void au0828_card_setup(struct au0828_dev *dev);
320
321 /* ----------------------------------------------------------- */
322 /* au0828-i2c.c */
323 extern int au0828_i2c_register(struct au0828_dev *dev);
324 extern int au0828_i2c_unregister(struct au0828_dev *dev);
325
326 /* ----------------------------------------------------------- */
327 /* au0828-video.c */
328 extern int au0828_start_analog_streaming(struct vb2_queue *vq,
329 unsigned int count);
330 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
331 #ifdef CONFIG_VIDEO_AU0828_V4L2
332 extern int au0828_v4l2_device_register(struct usb_interface *interface,
333 struct au0828_dev *dev);
334
335 extern int au0828_analog_register(struct au0828_dev *dev,
336 struct usb_interface *interface);
337 extern int au0828_analog_unregister(struct au0828_dev *dev);
338 extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev);
339 extern void au0828_v4l2_suspend(struct au0828_dev *dev);
340 extern void au0828_v4l2_resume(struct au0828_dev *dev);
341 #else
au0828_v4l2_device_register(struct usb_interface * interface,struct au0828_dev * dev)342 static inline int au0828_v4l2_device_register(struct usb_interface *interface,
343 struct au0828_dev *dev)
344 { return 0; };
au0828_analog_register(struct au0828_dev * dev,struct usb_interface * interface)345 static inline int au0828_analog_register(struct au0828_dev *dev,
346 struct usb_interface *interface)
347 { return 0; };
au0828_analog_unregister(struct au0828_dev * dev)348 static inline int au0828_analog_unregister(struct au0828_dev *dev)
349 { return 0; };
au0828_usb_v4l2_media_release(struct au0828_dev * dev)350 static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { };
au0828_v4l2_suspend(struct au0828_dev * dev)351 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
au0828_v4l2_resume(struct au0828_dev * dev)352 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
353 #endif
354
355 /* ----------------------------------------------------------- */
356 /* au0828-dvb.c */
357 extern int au0828_dvb_register(struct au0828_dev *dev);
358 extern void au0828_dvb_unregister(struct au0828_dev *dev);
359 void au0828_dvb_suspend(struct au0828_dev *dev);
360 void au0828_dvb_resume(struct au0828_dev *dev);
361
362 /* au0828-vbi.c */
363 extern struct vb2_ops au0828_vbi_qops;
364
365 #define dprintk(level, fmt, arg...)\
366 do { if (au0828_debug & level)\
367 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
368 } while (0)
369
370 /* au0828-input.c */
371 #ifdef CONFIG_VIDEO_AU0828_RC
372 extern int au0828_rc_register(struct au0828_dev *dev);
373 extern void au0828_rc_unregister(struct au0828_dev *dev);
374 extern int au0828_rc_suspend(struct au0828_dev *dev);
375 extern int au0828_rc_resume(struct au0828_dev *dev);
376 #else
au0828_rc_register(struct au0828_dev * dev)377 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
au0828_rc_unregister(struct au0828_dev * dev)378 static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
au0828_rc_suspend(struct au0828_dev * dev)379 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
au0828_rc_resume(struct au0828_dev * dev)380 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
381 #endif
382