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
38 /* DVB */
39 #include "demux.h"
40 #include "dmxdev.h"
41 #include "dvb_demux.h"
42 #include "dvb_frontend.h"
43 #include "dvb_net.h"
44 #include "dvbdev.h"
45
46 #include "au0828-reg.h"
47 #include "au0828-cards.h"
48
49 #define URB_COUNT 16
50 #define URB_BUFSIZE (0xe522)
51
52 /* Analog constants */
53 #define NTSC_STD_W 720
54 #define NTSC_STD_H 480
55
56 #define AU0828_INTERLACED_DEFAULT 1
57 #define V4L2_CID_PRIVATE_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0)
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 AU0828_VMUX_DEBUG
80 };
81
82 struct au0828_input {
83 enum au0828_itype type;
84 unsigned int vmux;
85 unsigned int amux;
86 void (*audio_setup) (void *priv, int enable);
87 };
88
89 struct au0828_board {
90 char *name;
91 unsigned int tuner_type;
92 unsigned char tuner_addr;
93 unsigned char i2c_clk_divider;
94 unsigned char has_ir_i2c:1;
95 unsigned char has_analog:1;
96 struct au0828_input input[AU0828_MAX_INPUT];
97
98 };
99
100 struct au0828_dvb {
101 struct mutex lock;
102 struct dvb_adapter adapter;
103 struct dvb_frontend *frontend;
104 struct dvb_demux demux;
105 struct dmxdev dmxdev;
106 struct dmx_frontend fe_hw;
107 struct dmx_frontend fe_mem;
108 struct dvb_net net;
109 int feeding;
110 int start_count;
111 int stop_count;
112
113 int (*set_frontend)(struct dvb_frontend *fe);
114 };
115
116 enum au0828_stream_state {
117 STREAM_OFF,
118 STREAM_INTERRUPT,
119 STREAM_ON
120 };
121
122 #define AUVI_INPUT(nr) (dev->board.input[nr])
123
124 /* device state */
125 enum au0828_dev_state {
126 DEV_INITIALIZED = 0,
127 DEV_DISCONNECTED = 1,
128 DEV_MISCONFIGURED = 2
129 };
130
131 struct au0828_dev;
132
133 struct au0828_usb_isoc_ctl {
134 /* max packet size of isoc transaction */
135 int max_pkt_size;
136
137 /* number of allocated urbs */
138 int num_bufs;
139
140 /* urb for isoc transfers */
141 struct urb **urb;
142
143 /* transfer buffers for isoc transfer */
144 char **transfer_buffer;
145
146 /* Last buffer command and region */
147 u8 cmd;
148 int pos, size, pktsize;
149
150 /* Last field: ODD or EVEN? */
151 int field;
152
153 /* Stores incomplete commands */
154 u32 tmp_buf;
155 int tmp_buf_len;
156
157 /* Stores already requested buffers */
158 struct au0828_buffer *buf;
159 struct au0828_buffer *vbi_buf;
160
161 /* Stores the number of received fields */
162 int nfields;
163
164 /* isoc urb callback */
165 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
166
167 };
168
169 /* buffer for one video frame */
170 struct au0828_buffer {
171 /* common v4l buffer stuff -- must be first */
172 struct vb2_v4l2_buffer vb;
173 struct list_head list;
174
175 void *mem;
176 unsigned long length;
177 int top_field;
178 /* pointer to vmalloc memory address in vb */
179 char *vb_buf;
180 };
181
182 struct au0828_dmaqueue {
183 struct list_head active;
184 /* Counters to control buffer fill */
185 int pos;
186 };
187
188 struct au0828_dev {
189 struct mutex mutex;
190 struct usb_device *usbdev;
191 int boardnr;
192 struct au0828_board board;
193 u8 ctrlmsg[64];
194
195 /* I2C */
196 struct i2c_adapter i2c_adap;
197 struct i2c_algorithm i2c_algo;
198 struct i2c_client i2c_client;
199 u32 i2c_rc;
200
201 /* Digital */
202 struct au0828_dvb dvb;
203 struct work_struct restart_streaming;
204
205 #ifdef CONFIG_VIDEO_AU0828_V4L2
206 /* Analog */
207 struct v4l2_device v4l2_dev;
208 struct v4l2_ctrl_handler v4l2_ctrl_hdl;
209 #endif
210 #ifdef CONFIG_VIDEO_AU0828_RC
211 struct au0828_rc *ir;
212 #endif
213
214 struct video_device vdev;
215 struct video_device vbi_dev;
216
217 /* Videobuf2 */
218 struct vb2_queue vb_vidq;
219 struct vb2_queue vb_vbiq;
220 struct mutex vb_queue_lock;
221 struct mutex vb_vbi_queue_lock;
222
223 unsigned int frame_count;
224 unsigned int vbi_frame_count;
225
226 struct timer_list vid_timeout;
227 int vid_timeout_running;
228 struct timer_list vbi_timeout;
229 int vbi_timeout_running;
230
231 int users;
232 int streaming_users;
233
234 int width;
235 int height;
236 int vbi_width;
237 int vbi_height;
238 u32 vbi_read;
239 v4l2_std_id std;
240 u32 field_size;
241 u32 frame_size;
242 u32 bytesperline;
243 int type;
244 u8 ctrl_ainput;
245 __u8 isoc_in_endpointaddr;
246 u8 isoc_init_ok;
247 int greenscreen_detected;
248 int ctrl_freq;
249 int input_type;
250 int std_set_in_tuner_core;
251 unsigned int ctrl_input;
252 long unsigned int dev_state; /* defined at enum au0828_dev_state */;
253 enum au0828_stream_state stream_state;
254 wait_queue_head_t open;
255
256 struct mutex lock;
257
258 /* Isoc control struct */
259 struct au0828_dmaqueue vidq;
260 struct au0828_dmaqueue vbiq;
261 struct au0828_usb_isoc_ctl isoc_ctl;
262 spinlock_t slock;
263
264 /* usb transfer */
265 int alt; /* alternate */
266 int max_pkt_size; /* max packet size of isoc transaction */
267 int num_alt; /* Number of alternative settings */
268 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
269 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */
270 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
271 transfer */
272
273 /* DVB USB / URB Related */
274 bool urb_streaming, need_urb_start;
275 struct urb *urbs[URB_COUNT];
276
277 /* Preallocated transfer digital transfer buffers */
278
279 char *dig_transfer_buffer[URB_COUNT];
280 };
281
282
283 /* ----------------------------------------------------------- */
284 #define au0828_read(dev, reg) au0828_readreg(dev, reg)
285 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
286 #define au0828_andor(dev, reg, mask, value) \
287 au0828_writereg(dev, reg, \
288 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
289
290 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
291 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
292
293 /* ----------------------------------------------------------- */
294 /* au0828-core.c */
295 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
296 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
297 extern int au0828_debug;
298
299 /* ----------------------------------------------------------- */
300 /* au0828-cards.c */
301 extern struct au0828_board au0828_boards[];
302 extern struct usb_device_id au0828_usb_id_table[];
303 extern void au0828_gpio_setup(struct au0828_dev *dev);
304 extern int au0828_tuner_callback(void *priv, int component,
305 int command, int arg);
306 extern void au0828_card_setup(struct au0828_dev *dev);
307
308 /* ----------------------------------------------------------- */
309 /* au0828-i2c.c */
310 extern int au0828_i2c_register(struct au0828_dev *dev);
311 extern int au0828_i2c_unregister(struct au0828_dev *dev);
312
313 /* ----------------------------------------------------------- */
314 /* au0828-video.c */
315 extern int au0828_analog_register(struct au0828_dev *dev,
316 struct usb_interface *interface);
317 extern void au0828_analog_unregister(struct au0828_dev *dev);
318 extern int au0828_start_analog_streaming(struct vb2_queue *vq,
319 unsigned int count);
320 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
321 #ifdef CONFIG_VIDEO_AU0828_V4L2
322 extern void au0828_v4l2_suspend(struct au0828_dev *dev);
323 extern void au0828_v4l2_resume(struct au0828_dev *dev);
324 #else
au0828_v4l2_suspend(struct au0828_dev * dev)325 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
au0828_v4l2_resume(struct au0828_dev * dev)326 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
327 #endif
328
329 /* ----------------------------------------------------------- */
330 /* au0828-dvb.c */
331 extern int au0828_dvb_register(struct au0828_dev *dev);
332 extern void au0828_dvb_unregister(struct au0828_dev *dev);
333 void au0828_dvb_suspend(struct au0828_dev *dev);
334 void au0828_dvb_resume(struct au0828_dev *dev);
335
336 /* au0828-vbi.c */
337 extern struct vb2_ops au0828_vbi_qops;
338
339 #define dprintk(level, fmt, arg...)\
340 do { if (au0828_debug & level)\
341 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
342 } while (0)
343
344 /* au0828-input.c */
345 #ifdef CONFIG_VIDEO_AU0828_RC
346 extern int au0828_rc_register(struct au0828_dev *dev);
347 extern void au0828_rc_unregister(struct au0828_dev *dev);
348 extern int au0828_rc_suspend(struct au0828_dev *dev);
349 extern int au0828_rc_resume(struct au0828_dev *dev);
350 #else
au0828_rc_register(struct au0828_dev * dev)351 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
au0828_rc_unregister(struct au0828_dev * dev)352 static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
au0828_rc_suspend(struct au0828_dev * dev)353 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
au0828_rc_resume(struct au0828_dev * dev)354 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
355 #endif
356