1 /*
2 saa7185 - Philips SAA7185B video encoder driver version 0.0.3
3
4 Copyright (C) 1998 Dave Perks <dperks@ibm.net>
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 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <linux/module.h>
22 #include <linux/delay.h>
23 #include <linux/errno.h>
24 #include <linux/fs.h>
25 #include <linux/kernel.h>
26 #include <linux/major.h>
27 #include <linux/malloc.h>
28 #include <linux/mm.h>
29 #include <linux/pci.h>
30 #include <linux/signal.h>
31 #include <asm/io.h>
32 #include <asm/pgtable.h>
33 #include <asm/page.h>
34 #include <linux/sched.h>
35 #include <asm/segment.h>
36 #include <linux/types.h>
37 #include <linux/wrapper.h>
38
39 #include <linux/videodev.h>
40 #include <linux/version.h>
41 #include <asm/uaccess.h>
42
43 #include <linux/i2c-old.h>
44 #include <linux/video_encoder.h>
45
46 #define DEBUG(x) x /* Debug driver */
47
48 /* ----------------------------------------------------------------------- */
49
50 struct saa7185 {
51 struct i2c_bus *bus;
52 int addr;
53 unsigned char reg[128];
54
55 int norm;
56 int enable;
57 int bright;
58 int contrast;
59 int hue;
60 int sat;
61 };
62
63 #define I2C_SAA7185 0x88
64
65 #define I2C_DELAY 10
66
67 /* ----------------------------------------------------------------------- */
68
69 static int saa7185_write(struct saa7185 *dev, unsigned char subaddr, unsigned char data)
70 {
71 int ack;
72
73 LOCK_I2C_BUS(dev->bus);
74
75 i2c_start(dev->bus);
76 i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
77 i2c_sendbyte(dev->bus, subaddr, I2C_DELAY);
78 ack = i2c_sendbyte(dev->bus, data, I2C_DELAY);
79 dev->reg[subaddr] = data;
80 i2c_stop(dev->bus);
81 UNLOCK_I2C_BUS(dev->bus);
82 return ack;
83 }
84
85 static int saa7185_write_block(struct saa7185 *dev, unsigned const char *data, unsigned int len)
86 {
87 int ack = 0;
88 unsigned subaddr;
89
90 while (len > 1) {
91 LOCK_I2C_BUS(dev->bus);
92 i2c_start(dev->bus);
93 i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
94 ack = i2c_sendbyte(dev->bus, (subaddr = *data++), I2C_DELAY);
95 ack = i2c_sendbyte(dev->bus, (dev->reg[subaddr] = *data++), I2C_DELAY);
96 len -= 2;
97 while (len > 1 && *data == ++subaddr) {
98 data++;
99 ack = i2c_sendbyte(dev->bus, (dev->reg[subaddr] = *data++), I2C_DELAY);
100 len -= 2;
101 }
102 i2c_stop(dev->bus);
103 UNLOCK_I2C_BUS(dev->bus);
104 }
105 return ack;
106 }
107
108 /* ----------------------------------------------------------------------- */
109
110 static const unsigned char init_common[] =
111 {
112 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1, YUV2C=1, MY2C=1, MUV2C=1 */
113
114 0x42, 0x6b, /* OVLY0=107 */
115 0x43, 0x00, /* OVLU0=0 white */
116 0x44, 0x00, /* OVLV0=0 */
117 0x45, 0x22, /* OVLY1=34 */
118 0x46, 0xac, /* OVLU1=172 yellow */
119 0x47, 0x0e, /* OVLV1=14 */
120 0x48, 0x03, /* OVLY2=3 */
121 0x49, 0x1d, /* OVLU2=29 cyan */
122 0x4a, 0xac, /* OVLV2=172 */
123 0x4b, 0xf0, /* OVLY3=240 */
124 0x4c, 0xc8, /* OVLU3=200 green */
125 0x4d, 0xb9, /* OVLV3=185 */
126 0x4e, 0xd4, /* OVLY4=212 */
127 0x4f, 0x38, /* OVLU4=56 magenta */
128 0x50, 0x47, /* OVLV4=71 */
129 0x51, 0xc1, /* OVLY5=193 */
130 0x52, 0xe3, /* OVLU5=227 red */
131 0x53, 0x54, /* OVLV5=84 */
132 0x54, 0xa3, /* OVLY6=163 */
133 0x55, 0x54, /* OVLU6=84 blue */
134 0x56, 0xf2, /* OVLV6=242 */
135 0x57, 0x90, /* OVLY7=144 */
136 0x58, 0x00, /* OVLU7=0 black */
137 0x59, 0x00, /* OVLV7=0 */
138
139 0x5a, 0x00, /* CHPS=0 */
140 0x5b, 0x76, /* GAINU=118 */
141 0x5c, 0xa5, /* GAINV=165 */
142 0x5d, 0x3c, /* BLCKL=60 */
143 0x5e, 0x3a, /* BLNNL=58 */
144 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
145 0x60, 0x00, /* NULL */
146
147 /* 0x61 - 0x66 set according to norm */
148
149 0x67, 0x00, /* 0 : caption 1st byte odd field */
150 0x68, 0x00, /* 0 : caption 2nd byte odd field */
151 0x69, 0x00, /* 0 : caption 1st byte even field */
152 0x6a, 0x00, /* 0 : caption 2nd byte even field */
153
154 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
155 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0, CBLF=0, ORCV2=0, PRCV2=0 */
156 0x6d, 0x00, /* SRCM1=0, CCEN=0 */
157
158 0x6e, 0x0e, /* HTRIG=0x00e, approx. centered, at least for PAL */
159 0x6f, 0x00, /* HTRIG upper bits */
160 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
161
162 /* The following should not be needed */
163
164 0x71, 0x15, /* BMRQ=0x115 */
165 0x72, 0x90, /* EMRQ=0x690 */
166 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
167 0x74, 0x00, /* NULL */
168 0x75, 0x00, /* NULL */
169 0x76, 0x00, /* NULL */
170 0x77, 0x15, /* BRCV=0x115 */
171 0x78, 0x90, /* ERCV=0x690 */
172 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
173
174 /* Field length controls */
175
176 0x7a, 0x70, /* FLC=0 */
177
178 /* The following should not be needed if SBLN = 1 */
179
180 0x7b, 0x16, /* FAL=22 */
181 0x7c, 0x35, /* LAL=244 */
182 0x7d, 0x20, /* LAL=244, FAL=22 */
183 };
184
185 static const unsigned char init_pal[] =
186 {
187 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1, YGS=1, INPI=0, DOWN=0 */
188 0x62, 0xc8, /* DECTYP=1, BSTA=72 */
189 0x63, 0xcb, /* FSC0 */
190 0x64, 0x8a, /* FSC1 */
191 0x65, 0x09, /* FSC2 */
192 0x66, 0x2a, /* FSC3 */
193 };
194
195 static const unsigned char init_ntsc[] =
196 {
197 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1, YGS=1, INPI=0, DOWN=0 */
198 0x62, 0xe6, /* DECTYP=1, BSTA=102 */
199 0x63, 0x1f, /* FSC0 */
200 0x64, 0x7c, /* FSC1 */
201 0x65, 0xf0, /* FSC2 */
202 0x66, 0x21, /* FSC3 */
203 };
204
205 static int saa7185_attach(struct i2c_device *device)
206 {
207 int i;
208 struct saa7185 *encoder;
209
210 device->data = encoder = kmalloc(sizeof(struct saa7185), GFP_KERNEL);
211 if (encoder == NULL) {
212 return -ENOMEM;
213 }
214 MOD_INC_USE_COUNT;
215
216 memset(encoder, 0, sizeof(struct saa7185));
217 strcpy(device->name, "saa7185");
218 encoder->bus = device->bus;
219 encoder->addr = device->addr;
220 encoder->norm = VIDEO_MODE_NTSC;
221 encoder->enable = 1;
222
223 i = saa7185_write_block(encoder, init_common, sizeof(init_common));
224 if (i >= 0) {
225 i = saa7185_write_block(encoder, init_ntsc, sizeof(init_ntsc));
226 }
227 if (i < 0) {
228 printk(KERN_ERR "%s_attach: init error %d\n", device->name, i);
229 }
230 return 0;
231 }
232
233
234 static int saa7185_detach(struct i2c_device *device)
235 {
236 kfree(device->data);
237 MOD_DEC_USE_COUNT;
238 return 0;
239 }
240
241 static int saa7185_command(struct i2c_device *device, unsigned int cmd, void *arg)
242 {
243 struct saa7185 *encoder = device->data;
244
245 switch (cmd) {
246
247 case ENCODER_GET_CAPABILITIES:
248 {
249 struct video_encoder_capability *cap = arg;
250
251 cap->flags
252 = VIDEO_ENCODER_PAL
253 | VIDEO_ENCODER_NTSC
254 | VIDEO_ENCODER_SECAM
255 | VIDEO_ENCODER_CCIR;
256 cap->inputs = 1;
257 cap->outputs = 1;
258 }
259 break;
260
261 case ENCODER_SET_NORM:
262 {
263 int *iarg = arg;
264
265 switch (*iarg) {
266
267 case VIDEO_MODE_NTSC:
268 saa7185_write_block(encoder, init_ntsc, sizeof(init_ntsc));
269 break;
270
271 case VIDEO_MODE_PAL:
272 saa7185_write_block(encoder, init_pal, sizeof(init_pal));
273 break;
274
275 case VIDEO_MODE_SECAM:
276 default:
277 return -EINVAL;
278
279 }
280 encoder->norm = *iarg;
281 }
282 break;
283
284 case ENCODER_SET_INPUT:
285 {
286 int *iarg = arg;
287
288 #if 0
289 /* not much choice of inputs */
290 if (*iarg != 0) {
291 return -EINVAL;
292 }
293 #else
294 /* RJ: *iarg = 0: input is from SA7111
295 *iarg = 1: input is from ZR36060 */
296
297 switch (*iarg) {
298
299 case 0:
300 /* Switch RTCE to 1 */
301 saa7185_write(encoder, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08);
302 break;
303
304 case 1:
305 /* Switch RTCE to 0 */
306 saa7185_write(encoder, 0x61, (encoder->reg[0x61] & 0xf7) | 0x00);
307 break;
308
309 default:
310 return -EINVAL;
311
312 }
313 #endif
314 }
315 break;
316
317 case ENCODER_SET_OUTPUT:
318 {
319 int *iarg = arg;
320
321 /* not much choice of outputs */
322 if (*iarg != 0) {
323 return -EINVAL;
324 }
325 }
326 break;
327
328 case ENCODER_ENABLE_OUTPUT:
329 {
330 int *iarg = arg;
331
332 encoder->enable = !!*iarg;
333 saa7185_write(encoder, 0x61, (encoder->reg[0x61] & 0xbf) | (encoder->enable ? 0x00 : 0x40));
334 }
335 break;
336
337 default:
338 return -EINVAL;
339 }
340
341 return 0;
342 }
343
344 /* ----------------------------------------------------------------------- */
345
346 struct i2c_driver i2c_driver_saa7185 =
347 {
348 "saa7185", /* name */
349 I2C_DRIVERID_VIDEOENCODER, /* ID */
350 I2C_SAA7185, I2C_SAA7185 + 1,
351
352 saa7185_attach,
353 saa7185_detach,
354 saa7185_command
355 };
356
357 EXPORT_NO_SYMBOLS;
358
359 #ifdef MODULE
360 int init_module(void)
361 #else
362 int saa7185_init(void)
363 #endif
364 {
365 return i2c_register_driver(&i2c_driver_saa7185);
366 }
367
368
369
370 #ifdef MODULE
371
372 void cleanup_module(void)
373 {
374 i2c_unregister_driver(&i2c_driver_saa7185);
375 }
376
377 #endif
378
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