1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1 |
4 | * |
5 | * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com> |
6 | * |
7 | * Based on adv7176 driver by: |
8 | * |
9 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> |
10 | * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> |
11 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> |
12 | * - some corrections for Pinnacle Systems Inc. DC10plus card. |
13 | * |
14 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> |
15 | * - moved over to linux>=2.4.x i2c protocol (1/1/2003) |
16 | */ |
17 | |
18 | #include <linux/module.h> |
19 | #include <linux/types.h> |
20 | #include <linux/slab.h> |
21 | #include <linux/ioctl.h> |
22 | #include <linux/uaccess.h> |
23 | #include <linux/i2c.h> |
24 | #include <linux/videodev2.h> |
25 | #include <media/v4l2-device.h> |
26 | |
27 | MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver" ); |
28 | MODULE_AUTHOR("Maxim Yevtyushkin" ); |
29 | MODULE_LICENSE("GPL" ); |
30 | |
31 | |
32 | static int debug; |
33 | module_param(debug, int, 0); |
34 | MODULE_PARM_DESC(debug, "Debug level (0-1)" ); |
35 | |
36 | /* ----------------------------------------------------------------------- */ |
37 | |
38 | struct adv7170 { |
39 | struct v4l2_subdev sd; |
40 | unsigned char reg[128]; |
41 | |
42 | v4l2_std_id norm; |
43 | int input; |
44 | }; |
45 | |
46 | static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd) |
47 | { |
48 | return container_of(sd, struct adv7170, sd); |
49 | } |
50 | |
51 | static char *inputs[] = { "pass_through" , "play_back" }; |
52 | |
53 | static u32 adv7170_codes[] = { |
54 | MEDIA_BUS_FMT_UYVY8_2X8, |
55 | MEDIA_BUS_FMT_UYVY8_1X16, |
56 | }; |
57 | |
58 | /* ----------------------------------------------------------------------- */ |
59 | |
60 | static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
61 | { |
62 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
63 | struct adv7170 *encoder = to_adv7170(sd); |
64 | |
65 | encoder->reg[reg] = value; |
66 | return i2c_smbus_write_byte_data(client, command: reg, value); |
67 | } |
68 | |
69 | static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg) |
70 | { |
71 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
72 | |
73 | return i2c_smbus_read_byte_data(client, command: reg); |
74 | } |
75 | |
76 | static int adv7170_write_block(struct v4l2_subdev *sd, |
77 | const u8 *data, unsigned int len) |
78 | { |
79 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
80 | struct adv7170 *encoder = to_adv7170(sd); |
81 | int ret = -1; |
82 | u8 reg; |
83 | |
84 | /* the adv7170 has an autoincrement function, use it if |
85 | * the adapter understands raw I2C */ |
86 | if (i2c_check_functionality(adap: client->adapter, I2C_FUNC_I2C)) { |
87 | /* do raw I2C, not smbus compatible */ |
88 | u8 block_data[32]; |
89 | int block_len; |
90 | |
91 | while (len >= 2) { |
92 | block_len = 0; |
93 | block_data[block_len++] = reg = data[0]; |
94 | do { |
95 | block_data[block_len++] = |
96 | encoder->reg[reg++] = data[1]; |
97 | len -= 2; |
98 | data += 2; |
99 | } while (len >= 2 && data[0] == reg && block_len < 32); |
100 | ret = i2c_master_send(client, buf: block_data, count: block_len); |
101 | if (ret < 0) |
102 | break; |
103 | } |
104 | } else { |
105 | /* do some slow I2C emulation kind of thing */ |
106 | while (len >= 2) { |
107 | reg = *data++; |
108 | ret = adv7170_write(sd, reg, value: *data++); |
109 | if (ret < 0) |
110 | break; |
111 | len -= 2; |
112 | } |
113 | } |
114 | return ret; |
115 | } |
116 | |
117 | /* ----------------------------------------------------------------------- */ |
118 | |
119 | #define TR0MODE 0x4c |
120 | #define TR0RST 0x80 |
121 | |
122 | #define TR1CAPT 0x00 |
123 | #define TR1PLAY 0x00 |
124 | |
125 | static const unsigned char init_NTSC[] = { |
126 | 0x00, 0x10, /* MR0 */ |
127 | 0x01, 0x20, /* MR1 */ |
128 | 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ |
129 | 0x03, 0x80, /* MR3 */ |
130 | 0x04, 0x30, /* MR4 */ |
131 | 0x05, 0x00, /* Reserved */ |
132 | 0x06, 0x00, /* Reserved */ |
133 | 0x07, TR0MODE, /* TM0 */ |
134 | 0x08, TR1CAPT, /* TM1 */ |
135 | 0x09, 0x16, /* Fsc0 */ |
136 | 0x0a, 0x7c, /* Fsc1 */ |
137 | 0x0b, 0xf0, /* Fsc2 */ |
138 | 0x0c, 0x21, /* Fsc3 */ |
139 | 0x0d, 0x00, /* Subcarrier Phase */ |
140 | 0x0e, 0x00, /* Closed Capt. Ext 0 */ |
141 | 0x0f, 0x00, /* Closed Capt. Ext 1 */ |
142 | 0x10, 0x00, /* Closed Capt. 0 */ |
143 | 0x11, 0x00, /* Closed Capt. 1 */ |
144 | 0x12, 0x00, /* Pedestal Ctl 0 */ |
145 | 0x13, 0x00, /* Pedestal Ctl 1 */ |
146 | 0x14, 0x00, /* Pedestal Ctl 2 */ |
147 | 0x15, 0x00, /* Pedestal Ctl 3 */ |
148 | 0x16, 0x00, /* CGMS_WSS_0 */ |
149 | 0x17, 0x00, /* CGMS_WSS_1 */ |
150 | 0x18, 0x00, /* CGMS_WSS_2 */ |
151 | 0x19, 0x00, /* Teletext Ctl */ |
152 | }; |
153 | |
154 | static const unsigned char init_PAL[] = { |
155 | 0x00, 0x71, /* MR0 */ |
156 | 0x01, 0x20, /* MR1 */ |
157 | 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ |
158 | 0x03, 0x80, /* MR3 */ |
159 | 0x04, 0x30, /* MR4 */ |
160 | 0x05, 0x00, /* Reserved */ |
161 | 0x06, 0x00, /* Reserved */ |
162 | 0x07, TR0MODE, /* TM0 */ |
163 | 0x08, TR1CAPT, /* TM1 */ |
164 | 0x09, 0xcb, /* Fsc0 */ |
165 | 0x0a, 0x8a, /* Fsc1 */ |
166 | 0x0b, 0x09, /* Fsc2 */ |
167 | 0x0c, 0x2a, /* Fsc3 */ |
168 | 0x0d, 0x00, /* Subcarrier Phase */ |
169 | 0x0e, 0x00, /* Closed Capt. Ext 0 */ |
170 | 0x0f, 0x00, /* Closed Capt. Ext 1 */ |
171 | 0x10, 0x00, /* Closed Capt. 0 */ |
172 | 0x11, 0x00, /* Closed Capt. 1 */ |
173 | 0x12, 0x00, /* Pedestal Ctl 0 */ |
174 | 0x13, 0x00, /* Pedestal Ctl 1 */ |
175 | 0x14, 0x00, /* Pedestal Ctl 2 */ |
176 | 0x15, 0x00, /* Pedestal Ctl 3 */ |
177 | 0x16, 0x00, /* CGMS_WSS_0 */ |
178 | 0x17, 0x00, /* CGMS_WSS_1 */ |
179 | 0x18, 0x00, /* CGMS_WSS_2 */ |
180 | 0x19, 0x00, /* Teletext Ctl */ |
181 | }; |
182 | |
183 | |
184 | static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
185 | { |
186 | struct adv7170 *encoder = to_adv7170(sd); |
187 | |
188 | v4l2_dbg(1, debug, sd, "set norm %llx\n" , (unsigned long long)std); |
189 | |
190 | if (std & V4L2_STD_NTSC) { |
191 | adv7170_write_block(sd, data: init_NTSC, len: sizeof(init_NTSC)); |
192 | if (encoder->input == 0) |
193 | adv7170_write(sd, reg: 0x02, value: 0x0e); /* Enable genlock */ |
194 | adv7170_write(sd, reg: 0x07, TR0MODE | TR0RST); |
195 | adv7170_write(sd, reg: 0x07, TR0MODE); |
196 | } else if (std & V4L2_STD_PAL) { |
197 | adv7170_write_block(sd, data: init_PAL, len: sizeof(init_PAL)); |
198 | if (encoder->input == 0) |
199 | adv7170_write(sd, reg: 0x02, value: 0x0e); /* Enable genlock */ |
200 | adv7170_write(sd, reg: 0x07, TR0MODE | TR0RST); |
201 | adv7170_write(sd, reg: 0x07, TR0MODE); |
202 | } else { |
203 | v4l2_dbg(1, debug, sd, "illegal norm: %llx\n" , |
204 | (unsigned long long)std); |
205 | return -EINVAL; |
206 | } |
207 | v4l2_dbg(1, debug, sd, "switched to %llx\n" , (unsigned long long)std); |
208 | encoder->norm = std; |
209 | return 0; |
210 | } |
211 | |
212 | static int adv7170_s_routing(struct v4l2_subdev *sd, |
213 | u32 input, u32 output, u32 config) |
214 | { |
215 | struct adv7170 *encoder = to_adv7170(sd); |
216 | |
217 | /* RJ: input = 0: input is from decoder |
218 | input = 1: input is from ZR36060 |
219 | input = 2: color bar */ |
220 | |
221 | v4l2_dbg(1, debug, sd, "set input from %s\n" , |
222 | input == 0 ? "decoder" : "ZR36060" ); |
223 | |
224 | switch (input) { |
225 | case 0: |
226 | adv7170_write(sd, reg: 0x01, value: 0x20); |
227 | adv7170_write(sd, reg: 0x08, TR1CAPT); /* TR1 */ |
228 | adv7170_write(sd, reg: 0x02, value: 0x0e); /* Enable genlock */ |
229 | adv7170_write(sd, reg: 0x07, TR0MODE | TR0RST); |
230 | adv7170_write(sd, reg: 0x07, TR0MODE); |
231 | /* udelay(10); */ |
232 | break; |
233 | |
234 | case 1: |
235 | adv7170_write(sd, reg: 0x01, value: 0x00); |
236 | adv7170_write(sd, reg: 0x08, TR1PLAY); /* TR1 */ |
237 | adv7170_write(sd, reg: 0x02, value: 0x08); |
238 | adv7170_write(sd, reg: 0x07, TR0MODE | TR0RST); |
239 | adv7170_write(sd, reg: 0x07, TR0MODE); |
240 | /* udelay(10); */ |
241 | break; |
242 | |
243 | default: |
244 | v4l2_dbg(1, debug, sd, "illegal input: %d\n" , input); |
245 | return -EINVAL; |
246 | } |
247 | v4l2_dbg(1, debug, sd, "switched to %s\n" , inputs[input]); |
248 | encoder->input = input; |
249 | return 0; |
250 | } |
251 | |
252 | static int adv7170_enum_mbus_code(struct v4l2_subdev *sd, |
253 | struct v4l2_subdev_state *sd_state, |
254 | struct v4l2_subdev_mbus_code_enum *code) |
255 | { |
256 | if (code->pad || code->index >= ARRAY_SIZE(adv7170_codes)) |
257 | return -EINVAL; |
258 | |
259 | code->code = adv7170_codes[code->index]; |
260 | return 0; |
261 | } |
262 | |
263 | static int adv7170_get_fmt(struct v4l2_subdev *sd, |
264 | struct v4l2_subdev_state *sd_state, |
265 | struct v4l2_subdev_format *format) |
266 | { |
267 | struct v4l2_mbus_framefmt *mf = &format->format; |
268 | u8 val = adv7170_read(sd, reg: 0x7); |
269 | |
270 | if (format->pad) |
271 | return -EINVAL; |
272 | |
273 | if ((val & 0x40) == (1 << 6)) |
274 | mf->code = MEDIA_BUS_FMT_UYVY8_1X16; |
275 | else |
276 | mf->code = MEDIA_BUS_FMT_UYVY8_2X8; |
277 | |
278 | mf->colorspace = V4L2_COLORSPACE_SMPTE170M; |
279 | mf->width = 0; |
280 | mf->height = 0; |
281 | mf->field = V4L2_FIELD_ANY; |
282 | |
283 | return 0; |
284 | } |
285 | |
286 | static int adv7170_set_fmt(struct v4l2_subdev *sd, |
287 | struct v4l2_subdev_state *sd_state, |
288 | struct v4l2_subdev_format *format) |
289 | { |
290 | struct v4l2_mbus_framefmt *mf = &format->format; |
291 | u8 val = adv7170_read(sd, reg: 0x7); |
292 | |
293 | if (format->pad) |
294 | return -EINVAL; |
295 | |
296 | switch (mf->code) { |
297 | case MEDIA_BUS_FMT_UYVY8_2X8: |
298 | val &= ~0x40; |
299 | break; |
300 | |
301 | case MEDIA_BUS_FMT_UYVY8_1X16: |
302 | val |= 0x40; |
303 | break; |
304 | |
305 | default: |
306 | v4l2_dbg(1, debug, sd, |
307 | "illegal v4l2_mbus_framefmt code: %d\n" , mf->code); |
308 | return -EINVAL; |
309 | } |
310 | |
311 | if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
312 | return adv7170_write(sd, reg: 0x7, value: val); |
313 | |
314 | return 0; |
315 | } |
316 | |
317 | /* ----------------------------------------------------------------------- */ |
318 | |
319 | static const struct v4l2_subdev_video_ops adv7170_video_ops = { |
320 | .s_std_output = adv7170_s_std_output, |
321 | .s_routing = adv7170_s_routing, |
322 | }; |
323 | |
324 | static const struct v4l2_subdev_pad_ops adv7170_pad_ops = { |
325 | .enum_mbus_code = adv7170_enum_mbus_code, |
326 | .get_fmt = adv7170_get_fmt, |
327 | .set_fmt = adv7170_set_fmt, |
328 | }; |
329 | |
330 | static const struct v4l2_subdev_ops adv7170_ops = { |
331 | .video = &adv7170_video_ops, |
332 | .pad = &adv7170_pad_ops, |
333 | }; |
334 | |
335 | /* ----------------------------------------------------------------------- */ |
336 | |
337 | static int adv7170_probe(struct i2c_client *client) |
338 | { |
339 | struct adv7170 *encoder; |
340 | struct v4l2_subdev *sd; |
341 | int i; |
342 | |
343 | /* Check if the adapter supports the needed features */ |
344 | if (!i2c_check_functionality(adap: client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
345 | return -ENODEV; |
346 | |
347 | v4l_info(client, "chip found @ 0x%x (%s)\n" , |
348 | client->addr << 1, client->adapter->name); |
349 | |
350 | encoder = devm_kzalloc(dev: &client->dev, size: sizeof(*encoder), GFP_KERNEL); |
351 | if (encoder == NULL) |
352 | return -ENOMEM; |
353 | sd = &encoder->sd; |
354 | v4l2_i2c_subdev_init(sd, client, ops: &adv7170_ops); |
355 | encoder->norm = V4L2_STD_NTSC; |
356 | encoder->input = 0; |
357 | |
358 | i = adv7170_write_block(sd, data: init_NTSC, len: sizeof(init_NTSC)); |
359 | if (i >= 0) { |
360 | i = adv7170_write(sd, reg: 0x07, TR0MODE | TR0RST); |
361 | i = adv7170_write(sd, reg: 0x07, TR0MODE); |
362 | i = adv7170_read(sd, reg: 0x12); |
363 | v4l2_dbg(1, debug, sd, "revision %d\n" , i & 1); |
364 | } |
365 | if (i < 0) |
366 | v4l2_dbg(1, debug, sd, "init error 0x%x\n" , i); |
367 | return 0; |
368 | } |
369 | |
370 | static void adv7170_remove(struct i2c_client *client) |
371 | { |
372 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
373 | |
374 | v4l2_device_unregister_subdev(sd); |
375 | } |
376 | |
377 | /* ----------------------------------------------------------------------- */ |
378 | |
379 | static const struct i2c_device_id adv7170_id[] = { |
380 | { "adv7170" , 0 }, |
381 | { "adv7171" , 0 }, |
382 | { } |
383 | }; |
384 | MODULE_DEVICE_TABLE(i2c, adv7170_id); |
385 | |
386 | static struct i2c_driver adv7170_driver = { |
387 | .driver = { |
388 | .name = "adv7170" , |
389 | }, |
390 | .probe = adv7170_probe, |
391 | .remove = adv7170_remove, |
392 | .id_table = adv7170_id, |
393 | }; |
394 | |
395 | module_i2c_driver(adv7170_driver); |
396 | |