1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Driver for the Auvitek AU0828 USB bridge
4 *
5 * Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
6 */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/bitops.h>
11 #include <linux/usb.h>
12 #include <linux/i2c.h>
13 #include <linux/i2c-algo-bit.h>
14 #include <media/tveeprom.h>
15
16 /* Analog */
17 #include <linux/videodev2.h>
18 #include <media/videobuf2-v4l2.h>
19 #include <media/videobuf2-vmalloc.h>
20 #include <media/v4l2-device.h>
21 #include <media/v4l2-ctrls.h>
22 #include <media/v4l2-fh.h>
23 #include <media/media-device.h>
24 #include <media/media-dev-allocator.h>
25
26 /* DVB */
27 #include <media/demux.h>
28 #include <media/dmxdev.h>
29 #include <media/dvb_demux.h>
30 #include <media/dvb_frontend.h>
31 #include <media/dvb_net.h>
32 #include <media/dvbdev.h>
33
34 #include "au0828-reg.h"
35 #include "au0828-cards.h"
36
37 #define URB_COUNT 16
38 #define URB_BUFSIZE (0xe522)
39
40 /* Analog constants */
41 #define NTSC_STD_W 720
42 #define NTSC_STD_H 480
43
44 #define AU0828_INTERLACED_DEFAULT 1
45
46 /* Definition for AU0828 USB transfer */
47 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */
48 #define AU0828_ISO_PACKETS_PER_URB 128
49
50 #define AU0828_MIN_BUF 4
51 #define AU0828_DEF_BUF 8
52
53 #define AU0828_MAX_INPUT 4
54
55 /* au0828 resource types (used for res_get/res_lock etc */
56 #define AU0828_RESOURCE_VIDEO 0x01
57 #define AU0828_RESOURCE_VBI 0x02
58
59 enum au0828_itype {
60 AU0828_VMUX_UNDEFINED = 0,
61 AU0828_VMUX_COMPOSITE,
62 AU0828_VMUX_SVIDEO,
63 AU0828_VMUX_CABLE,
64 AU0828_VMUX_TELEVISION,
65 AU0828_VMUX_DVB,
66 };
67
68 struct au0828_input {
69 enum au0828_itype type;
70 unsigned int vmux;
71 unsigned int amux;
72 void (*audio_setup) (void *priv, int enable);
73 };
74
75 struct au0828_board {
76 char *name;
77 unsigned int tuner_type;
78 unsigned char tuner_addr;
79 unsigned char i2c_clk_divider;
80 unsigned char has_ir_i2c:1;
81 unsigned char has_analog:1;
82 struct au0828_input input[AU0828_MAX_INPUT];
83 };
84
85 struct au0828_dvb {
86 struct mutex lock;
87 struct dvb_adapter adapter;
88 struct dvb_frontend *frontend;
89 struct dvb_demux demux;
90 struct dmxdev dmxdev;
91 struct dmx_frontend fe_hw;
92 struct dmx_frontend fe_mem;
93 struct dvb_net net;
94 int feeding;
95 int start_count;
96 int stop_count;
97
98 int (*set_frontend)(struct dvb_frontend *fe);
99 };
100
101 enum au0828_stream_state {
102 STREAM_OFF,
103 STREAM_INTERRUPT,
104 STREAM_ON
105 };
106
107 #define AUVI_INPUT(nr) (dev->board.input[nr])
108
109 /* device state */
110 enum au0828_dev_state {
111 DEV_INITIALIZED = 0,
112 DEV_DISCONNECTED = 1,
113 DEV_MISCONFIGURED = 2
114 };
115
116 struct au0828_dev;
117
118 struct au0828_usb_isoc_ctl {
119 /* max packet size of isoc transaction */
120 int max_pkt_size;
121
122 /* number of allocated urbs */
123 int num_bufs;
124
125 /* urb for isoc transfers */
126 struct urb **urb;
127
128 /* transfer buffers for isoc transfer */
129 char **transfer_buffer;
130
131 /* Last buffer command and region */
132 u8 cmd;
133 int pos, size, pktsize;
134
135 /* Last field: ODD or EVEN? */
136 int field;
137
138 /* Stores incomplete commands */
139 u32 tmp_buf;
140 int tmp_buf_len;
141
142 /* Stores already requested buffers */
143 struct au0828_buffer *buf;
144 struct au0828_buffer *vbi_buf;
145
146 /* Stores the number of received fields */
147 int nfields;
148
149 /* isoc urb callback */
150 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
151
152 };
153
154 /* buffer for one video frame */
155 struct au0828_buffer {
156 /* common v4l buffer stuff -- must be first */
157 struct vb2_v4l2_buffer vb;
158 struct list_head list;
159
160 void *mem;
161 unsigned long length;
162 int top_field;
163 /* pointer to vmalloc memory address in vb */
164 char *vb_buf;
165 };
166
167 struct au0828_dmaqueue {
168 struct list_head active;
169 /* Counters to control buffer fill */
170 int pos;
171 };
172
173 struct au0828_dev {
174 struct mutex mutex;
175 struct usb_device *usbdev;
176 int boardnr;
177 struct au0828_board board;
178 u8 ctrlmsg[64];
179
180 /* I2C */
181 struct i2c_adapter i2c_adap;
182 struct i2c_algorithm i2c_algo;
183 struct i2c_client i2c_client;
184 u32 i2c_rc;
185
186 /* Digital */
187 struct au0828_dvb dvb;
188 struct work_struct restart_streaming;
189 struct timer_list bulk_timeout;
190 int bulk_timeout_running;
191
192 #ifdef CONFIG_VIDEO_AU0828_V4L2
193 /* Analog */
194 struct v4l2_device v4l2_dev;
195 struct v4l2_ctrl_handler v4l2_ctrl_hdl;
196 #endif
197 #ifdef CONFIG_VIDEO_AU0828_RC
198 struct au0828_rc *ir;
199 #endif
200
201 struct video_device vdev;
202 struct video_device vbi_dev;
203
204 /* Videobuf2 */
205 struct vb2_queue vb_vidq;
206 struct vb2_queue vb_vbiq;
207 struct mutex vb_queue_lock;
208 struct mutex vb_vbi_queue_lock;
209
210 unsigned int frame_count;
211 unsigned int vbi_frame_count;
212
213 struct timer_list vid_timeout;
214 int vid_timeout_running;
215 struct timer_list vbi_timeout;
216 int vbi_timeout_running;
217
218 int users;
219 int streaming_users;
220
221 int width;
222 int height;
223 int vbi_width;
224 int vbi_height;
225 u32 vbi_read;
226 v4l2_std_id std;
227 u32 field_size;
228 u32 frame_size;
229 u32 bytesperline;
230 int type;
231 u8 ctrl_ainput;
232 __u8 isoc_in_endpointaddr;
233 u8 isoc_init_ok;
234 int greenscreen_detected;
235 int ctrl_freq;
236 int input_type;
237 int std_set_in_tuner_core;
238 unsigned int ctrl_input;
239 long unsigned int dev_state; /* defined at enum au0828_dev_state */;
240 enum au0828_stream_state stream_state;
241 wait_queue_head_t open;
242
243 struct mutex lock;
244
245 /* Isoc control struct */
246 struct au0828_dmaqueue vidq;
247 struct au0828_dmaqueue vbiq;
248 struct au0828_usb_isoc_ctl isoc_ctl;
249 spinlock_t slock;
250
251 /* usb transfer */
252 int alt; /* alternate */
253 int max_pkt_size; /* max packet size of isoc transaction */
254 int num_alt; /* Number of alternative settings */
255 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
256 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */
257 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
258 transfer */
259
260 /* DVB USB / URB Related */
261 bool urb_streaming, need_urb_start;
262 struct urb *urbs[URB_COUNT];
263
264 /* Preallocated transfer digital transfer buffers */
265
266 char *dig_transfer_buffer[URB_COUNT];
267
268 #ifdef CONFIG_MEDIA_CONTROLLER
269 struct media_device *media_dev;
270 struct media_pad video_pad, vbi_pad;
271 struct media_entity *decoder;
272 struct media_entity input_ent[AU0828_MAX_INPUT];
273 struct media_pad input_pad[AU0828_MAX_INPUT];
274 struct media_entity_notify entity_notify;
275 struct media_entity *tuner;
276 struct media_link *active_link;
277 struct media_entity *active_source;
278 struct media_entity *active_sink;
279 struct media_entity *active_link_owner;
280 struct media_entity *active_link_user;
281 struct media_pipeline *active_link_user_pipe;
282 bool active_link_shared;
283 #endif
284 };
285
286
287 /* ----------------------------------------------------------- */
288 #define au0828_read(dev, reg) au0828_readreg(dev, reg)
289 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
290 #define au0828_andor(dev, reg, mask, value) \
291 au0828_writereg(dev, reg, \
292 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
293
294 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
295 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
296
297 /* ----------------------------------------------------------- */
298 /* au0828-core.c */
299 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
300 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
301 extern void au0828_usb_release(struct au0828_dev *dev);
302 extern int au0828_debug;
303
304 /* ----------------------------------------------------------- */
305 /* au0828-cards.c */
306 extern struct au0828_board au0828_boards[];
307 extern struct usb_device_id au0828_usb_id_table[];
308 extern void au0828_gpio_setup(struct au0828_dev *dev);
309 extern int au0828_tuner_callback(void *priv, int component,
310 int command, int arg);
311 extern void au0828_card_setup(struct au0828_dev *dev);
312
313 /* ----------------------------------------------------------- */
314 /* au0828-i2c.c */
315 extern int au0828_i2c_register(struct au0828_dev *dev);
316 extern int au0828_i2c_unregister(struct au0828_dev *dev);
317
318 /* ----------------------------------------------------------- */
319 /* au0828-video.c */
320 extern int au0828_start_analog_streaming(struct vb2_queue *vq,
321 unsigned int count);
322 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
323 #ifdef CONFIG_VIDEO_AU0828_V4L2
324 extern int au0828_v4l2_device_register(struct usb_interface *interface,
325 struct au0828_dev *dev);
326
327 extern int au0828_analog_register(struct au0828_dev *dev,
328 struct usb_interface *interface);
329 extern int au0828_analog_unregister(struct au0828_dev *dev);
330 extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev);
331 extern void au0828_v4l2_suspend(struct au0828_dev *dev);
332 extern void au0828_v4l2_resume(struct au0828_dev *dev);
333 #else
au0828_v4l2_device_register(struct usb_interface * interface,struct au0828_dev * dev)334 static inline int au0828_v4l2_device_register(struct usb_interface *interface,
335 struct au0828_dev *dev)
336 { return 0; };
au0828_analog_register(struct au0828_dev * dev,struct usb_interface * interface)337 static inline int au0828_analog_register(struct au0828_dev *dev,
338 struct usb_interface *interface)
339 { return 0; };
au0828_analog_unregister(struct au0828_dev * dev)340 static inline int au0828_analog_unregister(struct au0828_dev *dev)
341 { return 0; };
au0828_usb_v4l2_media_release(struct au0828_dev * dev)342 static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { };
au0828_v4l2_suspend(struct au0828_dev * dev)343 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
au0828_v4l2_resume(struct au0828_dev * dev)344 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
345 #endif
346
347 /* ----------------------------------------------------------- */
348 /* au0828-dvb.c */
349 extern int au0828_dvb_register(struct au0828_dev *dev);
350 extern void au0828_dvb_unregister(struct au0828_dev *dev);
351 void au0828_dvb_suspend(struct au0828_dev *dev);
352 void au0828_dvb_resume(struct au0828_dev *dev);
353
354 /* au0828-vbi.c */
355 extern const struct vb2_ops au0828_vbi_qops;
356
357 #define dprintk(level, fmt, arg...)\
358 do { if (au0828_debug & level)\
359 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
360 } while (0)
361
362 /* au0828-input.c */
363 #ifdef CONFIG_VIDEO_AU0828_RC
364 extern int au0828_rc_register(struct au0828_dev *dev);
365 extern void au0828_rc_unregister(struct au0828_dev *dev);
366 extern int au0828_rc_suspend(struct au0828_dev *dev);
367 extern int au0828_rc_resume(struct au0828_dev *dev);
368 #else
au0828_rc_register(struct au0828_dev * dev)369 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
au0828_rc_unregister(struct au0828_dev * dev)370 static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
au0828_rc_suspend(struct au0828_dev * dev)371 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
au0828_rc_resume(struct au0828_dev * dev)372 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
373 #endif
374