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-vmalloc.h>
33 #include <media/v4l2-device.h>
34 #include <media/v4l2-ctrls.h>
35 #include <media/v4l2-fh.h>
36
37 /* DVB */
38 #include "demux.h"
39 #include "dmxdev.h"
40 #include "dvb_demux.h"
41 #include "dvb_frontend.h"
42 #include "dvb_net.h"
43 #include "dvbdev.h"
44
45 #include "au0828-reg.h"
46 #include "au0828-cards.h"
47
48 #define URB_COUNT 16
49 #define URB_BUFSIZE (0xe522)
50
51 /* Analog constants */
52 #define NTSC_STD_W 720
53 #define NTSC_STD_H 480
54
55 #define AU0828_INTERLACED_DEFAULT 1
56 #define V4L2_CID_PRIVATE_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0)
57
58 /* Defination for AU0828 USB transfer */
59 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */
60 #define AU0828_ISO_PACKETS_PER_URB 128
61
62 #define AU0828_MIN_BUF 4
63 #define AU0828_DEF_BUF 8
64
65 #define AU0828_MAX_INPUT 4
66
67 /* au0828 resource types (used for res_get/res_lock etc */
68 #define AU0828_RESOURCE_VIDEO 0x01
69 #define AU0828_RESOURCE_VBI 0x02
70
71 enum au0828_itype {
72 AU0828_VMUX_UNDEFINED = 0,
73 AU0828_VMUX_COMPOSITE,
74 AU0828_VMUX_SVIDEO,
75 AU0828_VMUX_CABLE,
76 AU0828_VMUX_TELEVISION,
77 AU0828_VMUX_DVB,
78 AU0828_VMUX_DEBUG
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
99 struct au0828_dvb {
100 struct mutex lock;
101 struct dvb_adapter adapter;
102 struct dvb_frontend *frontend;
103 struct dvb_demux demux;
104 struct dmxdev dmxdev;
105 struct dmx_frontend fe_hw;
106 struct dmx_frontend fe_mem;
107 struct dvb_net net;
108 int feeding;
109 int start_count;
110 int stop_count;
111
112 int (*set_frontend)(struct dvb_frontend *fe);
113 };
114
115 enum au0828_stream_state {
116 STREAM_OFF,
117 STREAM_INTERRUPT,
118 STREAM_ON
119 };
120
121 #define AUVI_INPUT(nr) (dev->board.input[nr])
122
123 /* device state */
124 enum au0828_dev_state {
125 DEV_INITIALIZED = 0,
126 DEV_DISCONNECTED = 1,
127 DEV_MISCONFIGURED = 2
128 };
129
130 struct au0828_dev;
131
132 struct au0828_usb_isoc_ctl {
133 /* max packet size of isoc transaction */
134 int max_pkt_size;
135
136 /* number of allocated urbs */
137 int num_bufs;
138
139 /* urb for isoc transfers */
140 struct urb **urb;
141
142 /* transfer buffers for isoc transfer */
143 char **transfer_buffer;
144
145 /* Last buffer command and region */
146 u8 cmd;
147 int pos, size, pktsize;
148
149 /* Last field: ODD or EVEN? */
150 int field;
151
152 /* Stores incomplete commands */
153 u32 tmp_buf;
154 int tmp_buf_len;
155
156 /* Stores already requested buffers */
157 struct au0828_buffer *buf;
158 struct au0828_buffer *vbi_buf;
159
160 /* Stores the number of received fields */
161 int nfields;
162
163 /* isoc urb callback */
164 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
165
166 };
167
168 /* buffer for one video frame */
169 struct au0828_buffer {
170 /* common v4l buffer stuff -- must be first */
171 struct vb2_buffer vb;
172 struct list_head list;
173
174 void *mem;
175 unsigned long length;
176 int top_field;
177 /* pointer to vmalloc memory address in vb */
178 char *vb_buf;
179 };
180
181 struct au0828_dmaqueue {
182 struct list_head active;
183 /* Counters to control buffer fill */
184 int pos;
185 };
186
187 struct au0828_dev {
188 struct mutex mutex;
189 struct usb_device *usbdev;
190 int boardnr;
191 struct au0828_board board;
192 u8 ctrlmsg[64];
193
194 /* I2C */
195 struct i2c_adapter i2c_adap;
196 struct i2c_algorithm i2c_algo;
197 struct i2c_client i2c_client;
198 u32 i2c_rc;
199
200 /* Digital */
201 struct au0828_dvb dvb;
202 struct work_struct restart_streaming;
203
204 #ifdef CONFIG_VIDEO_AU0828_V4L2
205 /* Analog */
206 struct v4l2_device v4l2_dev;
207 struct v4l2_ctrl_handler v4l2_ctrl_hdl;
208 #endif
209 #ifdef CONFIG_VIDEO_AU0828_RC
210 struct au0828_rc *ir;
211 #endif
212
213 struct video_device vdev;
214 struct video_device vbi_dev;
215
216 /* Videobuf2 */
217 struct vb2_queue vb_vidq;
218 struct vb2_queue vb_vbiq;
219 struct mutex vb_queue_lock;
220 struct mutex vb_vbi_queue_lock;
221
222 unsigned int frame_count;
223 unsigned int vbi_frame_count;
224
225 struct timer_list vid_timeout;
226 int vid_timeout_running;
227 struct timer_list vbi_timeout;
228 int vbi_timeout_running;
229
230 int users;
231 int streaming_users;
232
233 int width;
234 int height;
235 int vbi_width;
236 int vbi_height;
237 u32 vbi_read;
238 v4l2_std_id std;
239 u32 field_size;
240 u32 frame_size;
241 u32 bytesperline;
242 int type;
243 u8 ctrl_ainput;
244 __u8 isoc_in_endpointaddr;
245 u8 isoc_init_ok;
246 int greenscreen_detected;
247 int ctrl_freq;
248 int input_type;
249 int std_set_in_tuner_core;
250 unsigned int ctrl_input;
251 long unsigned int dev_state; /* defined at enum au0828_dev_state */;
252 enum au0828_stream_state stream_state;
253 wait_queue_head_t open;
254
255 struct mutex lock;
256
257 /* Isoc control struct */
258 struct au0828_dmaqueue vidq;
259 struct au0828_dmaqueue vbiq;
260 struct au0828_usb_isoc_ctl isoc_ctl;
261 spinlock_t slock;
262
263 /* usb transfer */
264 int alt; /* alternate */
265 int max_pkt_size; /* max packet size of isoc transaction */
266 int num_alt; /* Number of alternative settings */
267 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
268 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */
269 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
270 transfer */
271
272 /* DVB USB / URB Related */
273 bool urb_streaming, need_urb_start;
274 struct urb *urbs[URB_COUNT];
275
276 /* Preallocated transfer digital transfer buffers */
277
278 char *dig_transfer_buffer[URB_COUNT];
279 };
280
281
282 /* ----------------------------------------------------------- */
283 #define au0828_read(dev, reg) au0828_readreg(dev, reg)
284 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
285 #define au0828_andor(dev, reg, mask, value) \
286 au0828_writereg(dev, reg, \
287 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
288
289 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
290 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
291
292 /* ----------------------------------------------------------- */
293 /* au0828-core.c */
294 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
295 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
296 extern int au0828_debug;
297
298 /* ----------------------------------------------------------- */
299 /* au0828-cards.c */
300 extern struct au0828_board au0828_boards[];
301 extern struct usb_device_id au0828_usb_id_table[];
302 extern void au0828_gpio_setup(struct au0828_dev *dev);
303 extern int au0828_tuner_callback(void *priv, int component,
304 int command, int arg);
305 extern void au0828_card_setup(struct au0828_dev *dev);
306
307 /* ----------------------------------------------------------- */
308 /* au0828-i2c.c */
309 extern int au0828_i2c_register(struct au0828_dev *dev);
310 extern int au0828_i2c_unregister(struct au0828_dev *dev);
311
312 /* ----------------------------------------------------------- */
313 /* au0828-video.c */
314 extern int au0828_analog_register(struct au0828_dev *dev,
315 struct usb_interface *interface);
316 extern void au0828_analog_unregister(struct au0828_dev *dev);
317 extern int au0828_start_analog_streaming(struct vb2_queue *vq,
318 unsigned int count);
319 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
320 #ifdef CONFIG_VIDEO_AU0828_V4L2
321 extern void au0828_v4l2_suspend(struct au0828_dev *dev);
322 extern void au0828_v4l2_resume(struct au0828_dev *dev);
323 #else
au0828_v4l2_suspend(struct au0828_dev * dev)324 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
au0828_v4l2_resume(struct au0828_dev * dev)325 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
326 #endif
327
328 /* ----------------------------------------------------------- */
329 /* au0828-dvb.c */
330 extern int au0828_dvb_register(struct au0828_dev *dev);
331 extern void au0828_dvb_unregister(struct au0828_dev *dev);
332 void au0828_dvb_suspend(struct au0828_dev *dev);
333 void au0828_dvb_resume(struct au0828_dev *dev);
334
335 /* au0828-vbi.c */
336 extern struct vb2_ops au0828_vbi_qops;
337
338 #define dprintk(level, fmt, arg...)\
339 do { if (au0828_debug & level)\
340 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
341 } while (0)
342
343 /* au0828-input.c */
344 #ifdef CONFIG_VIDEO_AU0828_RC
345 extern int au0828_rc_register(struct au0828_dev *dev);
346 extern void au0828_rc_unregister(struct au0828_dev *dev);
347 extern int au0828_rc_suspend(struct au0828_dev *dev);
348 extern int au0828_rc_resume(struct au0828_dev *dev);
349 #else
au0828_rc_register(struct au0828_dev * dev)350 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
au0828_rc_unregister(struct au0828_dev * dev)351 static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
au0828_rc_suspend(struct au0828_dev * dev)352 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
au0828_rc_resume(struct au0828_dev * dev)353 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
354 #endif
355