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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / media / video / zoran / zr36060.c
blob008746ff7746a45f55856321bb2a24e2cdc375cc
1 /*
2 * Zoran ZR36060 basic configuration functions
3 *
4 * Copyright (C) 2002 Laurent Pinchart <laurent.pinchart@skynet.be>
5 *
6 * $Id: zr36060.c,v 1.1.2.22 2003/05/06 09:35:36 rbultje Exp $
7 *
8 * ------------------------------------------------------------------------
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * ------------------------------------------------------------------------
25 */
26
27 #define ZR060_VERSION "v0.7"
28
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/delay.h>
33
34 #include <linux/types.h>
35 #include <linux/wait.h>
36
37 /* I/O commands, error codes */
38 #include <asm/io.h>
39
40 /* headerfile of this module */
41 #include "zr36060.h"
42
43 /* codec io API */
44 #include "videocodec.h"
45
46 /* it doesn't make sense to have more than 20 or so,
47 just to prevent some unwanted loops */
48 #define MAX_CODECS 20
49
50 /* amount of chips attached via this driver */
51 static int zr36060_codecs;
52
53 static int low_bitrate;
54 module_param(low_bitrate, bool, 0);
55 MODULE_PARM_DESC(low_bitrate, "Buz compatibility option, halves bitrate");
56
57 /* debugging is available via module parameter */
58 static int debug;
59 module_param(debug, int, 0);
60 MODULE_PARM_DESC(debug, "Debug level (0-4)");
61
62 #define dprintk(num, format, args...) \
63 do { \
64 if (debug >= num) \
65 printk(format, ##args); \
66 } while (0)
67
68 /* =========================================================================
69 Local hardware I/O functions:
70
71 read/write via codec layer (registers are located in the master device)
72 ========================================================================= */
73
74 /* read and write functions */
75 static u8
76 zr36060_read (struct zr36060 *ptr,
77 u16 reg)
78 {
79 u8 value = 0;
80
81 // just in case something is wrong...
82 if (ptr->codec->master_data->readreg)
83 value = (ptr->codec->master_data->readreg(ptr->codec,
84 reg)) & 0xff;
85 else
86 dprintk(1,
87 KERN_ERR "%s: invalid I/O setup, nothing read!\n",
88 ptr->name);
89
90 //dprintk(4, "%s: reading from 0x%04x: %02x\n",ptr->name,reg,value);
91
92 return value;
93 }
94
95 static void
96 zr36060_write(struct zr36060 *ptr,
97 u16 reg,
98 u8 value)
99 {
100 //dprintk(4, "%s: writing 0x%02x to 0x%04x\n",ptr->name,value,reg);
101 dprintk(4, "0x%02x @0x%04x\n", value, reg);
102
103 // just in case something is wrong...
104 if (ptr->codec->master_data->writereg)
105 ptr->codec->master_data->writereg(ptr->codec, reg, value);
106 else
107 dprintk(1,
108 KERN_ERR
109 "%s: invalid I/O setup, nothing written!\n",
110 ptr->name);
111 }
112
113 /* =========================================================================
114 Local helper function:
115
116 status read
117 ========================================================================= */
118
119 /* status is kept in datastructure */
120 static u8
121 zr36060_read_status (struct zr36060 *ptr)
122 {
123 ptr->status = zr36060_read(ptr, ZR060_CFSR);
124
125 zr36060_read(ptr, 0);
126 return ptr->status;
127 }
128
129 /* =========================================================================
130 Local helper function:
131
132 scale factor read
133 ========================================================================= */
134
135 /* scale factor is kept in datastructure */
136 static u16
137 zr36060_read_scalefactor (struct zr36060 *ptr)
138 {
139 ptr->scalefact = (zr36060_read(ptr, ZR060_SF_HI) << 8) |
140 (zr36060_read(ptr, ZR060_SF_LO) & 0xFF);
141
142 /* leave 0 selected for an eventually GO from master */
143 zr36060_read(ptr, 0);
144 return ptr->scalefact;
145 }
146
147 /* =========================================================================
148 Local helper function:
149
150 wait if codec is ready to proceed (end of processing) or time is over
151 ========================================================================= */
152
153 static void
154 zr36060_wait_end (struct zr36060 *ptr)
155 {
156 int i = 0;
157
158 while (zr36060_read_status(ptr) & ZR060_CFSR_Busy) {
159 udelay(1);
160 if (i++ > 200000) { // 200ms, there is for sure something wrong!!!
161 dprintk(1,
162 "%s: timeout at wait_end (last status: 0x%02x)\n",
163 ptr->name, ptr->status);
164 break;
165 }
166 }
167 }
168
169 /* =========================================================================
170 Local helper function:
171
172 basic test of "connectivity", writes/reads to/from memory the SOF marker
173 ========================================================================= */
174
175 static int
176 zr36060_basic_test (struct zr36060 *ptr)
177 {
178 if ((zr36060_read(ptr, ZR060_IDR_DEV) != 0x33) &&
179 (zr36060_read(ptr, ZR060_IDR_REV) != 0x01)) {
180 dprintk(1,
181 KERN_ERR
182 "%s: attach failed, can't connect to jpeg processor!\n",
183 ptr->name);
184 return -ENXIO;
185 }
186
187 zr36060_wait_end(ptr);
188 if (ptr->status & ZR060_CFSR_Busy) {
189 dprintk(1,
190 KERN_ERR
191 "%s: attach failed, jpeg processor failed (end flag)!\n",
192 ptr->name);
193 return -EBUSY;
194 }
195
196 return 0; /* looks good! */
197 }
198
199 /* =========================================================================
200 Local helper function:
201
202 simple loop for pushing the init datasets
203 ========================================================================= */
204
205 static int
206 zr36060_pushit (struct zr36060 *ptr,
207 u16 startreg,
208 u16 len,
209 const char *data)
210 {
211 int i = 0;
212
213 dprintk(4, "%s: write data block to 0x%04x (len=%d)\n", ptr->name,
214 startreg, len);
215 while (i < len) {
216 zr36060_write(ptr, startreg++, data[i++]);
217 }
218
219 return i;
220 }
221
222 /* =========================================================================
223 Basic datasets:
224
225 jpeg baseline setup data (you find it on lots places in internet, or just
226 extract it from any regular .jpg image...)
227
228 Could be variable, but until it's not needed it they are just fixed to save
229 memory. Otherwise expand zr36060 structure with arrays, push the values to
230 it and initalize from there, as e.g. the linux zr36057/60 driver does it.
231 ========================================================================= */
232
233 static const char zr36060_dqt[0x86] = {
234 0xff, 0xdb, //Marker: DQT
235 0x00, 0x84, //Length: 2*65+2
236 0x00, //Pq,Tq first table
237 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
238 0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28,
239 0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
240 0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
241 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44,
242 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57,
243 0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
244 0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
245 0x01, //Pq,Tq second table
246 0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
247 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
248 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
249 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
250 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
251 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
252 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
253 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
254 };
255
256 static const char zr36060_dht[0x1a4] = {
257 0xff, 0xc4, //Marker: DHT
258 0x01, 0xa2, //Length: 2*AC, 2*DC
259 0x00, //DC first table
260 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,
261 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
262 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
263 0x01, //DC second table
264 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
265 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
266 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
267 0x10, //AC first table
268 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
269 0x05, 0x05, 0x04, 0x04, 0x00, 0x00,
270 0x01, 0x7D, 0x01, 0x02, 0x03, 0x00, 0x04, 0x11,
271 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
272 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1,
273 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24,
274 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17,
275 0x18, 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34,
276 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
277 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56,
278 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
279 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
280 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88,
281 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
282 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
283 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9,
284 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8,
285 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
286 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
287 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
288 0xF8, 0xF9, 0xFA,
289 0x11, //AC second table
290 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
291 0x07, 0x05, 0x04, 0x04, 0x00, 0x01,
292 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04,
293 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
294 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
295 0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62,
296 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25,
297 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
298 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
299 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56,
300 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66,
301 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
302 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
303 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
304 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
305 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8,
306 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
307 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8,
308 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
309 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8,
310 0xF9, 0xFA
311 };
312
313 /* jpeg baseline setup, this is just fixed in this driver (YUV pictures) */
314 #define NO_OF_COMPONENTS 0x3 //Y,U,V
315 #define BASELINE_PRECISION 0x8 //MCU size (?)
316 static const char zr36060_tq[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's QT
317 static const char zr36060_td[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's DC
318 static const char zr36060_ta[8] = { 0, 1, 1, 0, 0, 0, 0, 0 }; //table idx's AC
319
320 /* horizontal 422 decimation setup (maybe we support 411 or so later, too) */
321 static const char zr36060_decimation_h[8] = { 2, 1, 1, 0, 0, 0, 0, 0 };
322 static const char zr36060_decimation_v[8] = { 1, 1, 1, 0, 0, 0, 0, 0 };
323
324 /* =========================================================================
325 Local helper functions:
326
327 calculation and setup of parameter-dependent JPEG baseline segments
328 (needed for compression only)
329 ========================================================================= */
330
331 /* ------------------------------------------------------------------------- */
332
333 /* SOF (start of frame) segment depends on width, height and sampling ratio
334 of each color component */
335
336 static int
337 zr36060_set_sof (struct zr36060 *ptr)
338 {
339 char sof_data[34]; // max. size of register set
340 int i;
341
342 dprintk(3, "%s: write SOF (%dx%d, %d components)\n", ptr->name,
343 ptr->width, ptr->height, NO_OF_COMPONENTS);
344 sof_data[0] = 0xff;
345 sof_data[1] = 0xc0;
346 sof_data[2] = 0x00;
347 sof_data[3] = (3 * NO_OF_COMPONENTS) + 8;
348 sof_data[4] = BASELINE_PRECISION; // only '8' possible with zr36060
349 sof_data[5] = (ptr->height) >> 8;
350 sof_data[6] = (ptr->height) & 0xff;
351 sof_data[7] = (ptr->width) >> 8;
352 sof_data[8] = (ptr->width) & 0xff;
353 sof_data[9] = NO_OF_COMPONENTS;
354 for (i = 0; i < NO_OF_COMPONENTS; i++) {
355 sof_data[10 + (i * 3)] = i; // index identifier
356 sof_data[11 + (i * 3)] = (ptr->h_samp_ratio[i] << 4) |
357 (ptr->v_samp_ratio[i]); // sampling ratios
358 sof_data[12 + (i * 3)] = zr36060_tq[i]; // Q table selection
359 }
360 return zr36060_pushit(ptr, ZR060_SOF_IDX,
361 (3 * NO_OF_COMPONENTS) + 10, sof_data);
362 }
363
364 /* ------------------------------------------------------------------------- */
365
366 /* SOS (start of scan) segment depends on the used scan components
367 of each color component */
368
369 static int
370 zr36060_set_sos (struct zr36060 *ptr)
371 {
372 char sos_data[16]; // max. size of register set
373 int i;
374
375 dprintk(3, "%s: write SOS\n", ptr->name);
376 sos_data[0] = 0xff;
377 sos_data[1] = 0xda;
378 sos_data[2] = 0x00;
379 sos_data[3] = 2 + 1 + (2 * NO_OF_COMPONENTS) + 3;
380 sos_data[4] = NO_OF_COMPONENTS;
381 for (i = 0; i < NO_OF_COMPONENTS; i++) {
382 sos_data[5 + (i * 2)] = i; // index
383 sos_data[6 + (i * 2)] = (zr36060_td[i] << 4) |
384 zr36060_ta[i]; // AC/DC tbl.sel.
385 }
386 sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 2] = 00; // scan start
387 sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 3] = 0x3f;
388 sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 4] = 00;
389 return zr36060_pushit(ptr, ZR060_SOS_IDX,
390 4 + 1 + (2 * NO_OF_COMPONENTS) + 3,
391 sos_data);
392 }
393
394 /* ------------------------------------------------------------------------- */
395
396 /* DRI (define restart interval) */
397
398 static int
399 zr36060_set_dri (struct zr36060 *ptr)
400 {
401 char dri_data[6]; // max. size of register set
402
403 dprintk(3, "%s: write DRI\n", ptr->name);
404 dri_data[0] = 0xff;
405 dri_data[1] = 0xdd;
406 dri_data[2] = 0x00;
407 dri_data[3] = 0x04;
408 dri_data[4] = (ptr->dri) >> 8;
409 dri_data[5] = (ptr->dri) & 0xff;
410 return zr36060_pushit(ptr, ZR060_DRI_IDX, 6, dri_data);
411 }
412
413 /* =========================================================================
414 Setup function:
415
416 Setup compression/decompression of Zoran's JPEG processor
417 ( see also zoran 36060 manual )
418
419 ... sorry for the spaghetti code ...
420 ========================================================================= */
421 static void
422 zr36060_init (struct zr36060 *ptr)
423 {
424 int sum = 0;
425 long bitcnt, tmp;
426
427 if (ptr->mode == CODEC_DO_COMPRESSION) {
428 dprintk(2, "%s: COMPRESSION SETUP\n", ptr->name);
429
430 zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
431
432 /* 060 communicates with 067 in master mode */
433 zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CodeMstr);
434
435 /* Compression with or without variable scale factor */
436 /*FIXME: What about ptr->bitrate_ctrl? */
437 zr36060_write(ptr, ZR060_CMR,
438 ZR060_CMR_Comp | ZR060_CMR_Pass2 |
439 ZR060_CMR_BRB);
440
441 /* Must be zero */
442 zr36060_write(ptr, ZR060_MBZ, 0x00);
443 zr36060_write(ptr, ZR060_TCR_HI, 0x00);
444 zr36060_write(ptr, ZR060_TCR_LO, 0x00);
445
446 /* Disable all IRQs - no DataErr means autoreset */
447 zr36060_write(ptr, ZR060_IMR, 0);
448
449 /* volume control settings */
450 zr36060_write(ptr, ZR060_SF_HI, ptr->scalefact >> 8);
451 zr36060_write(ptr, ZR060_SF_LO, ptr->scalefact & 0xff);
452
453 zr36060_write(ptr, ZR060_AF_HI, 0xff);
454 zr36060_write(ptr, ZR060_AF_M, 0xff);
455 zr36060_write(ptr, ZR060_AF_LO, 0xff);
456
457 /* setup the variable jpeg tables */
458 sum += zr36060_set_sof(ptr);
459 sum += zr36060_set_sos(ptr);
460 sum += zr36060_set_dri(ptr);
461
462 /* setup the fixed jpeg tables - maybe variable, though -
463 * (see table init section above) */
464 sum +=
465 zr36060_pushit(ptr, ZR060_DQT_IDX, sizeof(zr36060_dqt),
466 zr36060_dqt);
467 sum +=
468 zr36060_pushit(ptr, ZR060_DHT_IDX, sizeof(zr36060_dht),
469 zr36060_dht);
470 zr36060_write(ptr, ZR060_APP_IDX, 0xff);
471 zr36060_write(ptr, ZR060_APP_IDX + 1, 0xe0 + ptr->app.appn);
472 zr36060_write(ptr, ZR060_APP_IDX + 2, 0x00);
473 zr36060_write(ptr, ZR060_APP_IDX + 3, ptr->app.len + 2);
474 sum += zr36060_pushit(ptr, ZR060_APP_IDX + 4, 60,
475 ptr->app.data) + 4;
476 zr36060_write(ptr, ZR060_COM_IDX, 0xff);
477 zr36060_write(ptr, ZR060_COM_IDX + 1, 0xfe);
478 zr36060_write(ptr, ZR060_COM_IDX + 2, 0x00);
479 zr36060_write(ptr, ZR060_COM_IDX + 3, ptr->com.len + 2);
480 sum += zr36060_pushit(ptr, ZR060_COM_IDX + 4, 60,
481 ptr->com.data) + 4;
482
483 /* setup misc. data for compression (target code sizes) */
484
485 /* size of compressed code to reach without header data */
486 sum = ptr->real_code_vol - sum;
487 bitcnt = sum << 3; /* need the size in bits */
488
489 tmp = bitcnt >> 16;
490 dprintk(3,
491 "%s: code: csize=%d, tot=%d, bit=%ld, highbits=%ld\n",
492 ptr->name, sum, ptr->real_code_vol, bitcnt, tmp);
493 zr36060_write(ptr, ZR060_TCV_NET_HI, tmp >> 8);
494 zr36060_write(ptr, ZR060_TCV_NET_MH, tmp & 0xff);
495 tmp = bitcnt & 0xffff;
496 zr36060_write(ptr, ZR060_TCV_NET_ML, tmp >> 8);
497 zr36060_write(ptr, ZR060_TCV_NET_LO, tmp & 0xff);
498
499 bitcnt -= bitcnt >> 7; // bits without stuffing
500 bitcnt -= ((bitcnt * 5) >> 6); // bits without eob
501
502 tmp = bitcnt >> 16;
503 dprintk(3, "%s: code: nettobit=%ld, highnettobits=%ld\n",
504 ptr->name, bitcnt, tmp);
505 zr36060_write(ptr, ZR060_TCV_DATA_HI, tmp >> 8);
506 zr36060_write(ptr, ZR060_TCV_DATA_MH, tmp & 0xff);
507 tmp = bitcnt & 0xffff;
508 zr36060_write(ptr, ZR060_TCV_DATA_ML, tmp >> 8);
509 zr36060_write(ptr, ZR060_TCV_DATA_LO, tmp & 0xff);
510
511 /* JPEG markers to be included in the compressed stream */
512 zr36060_write(ptr, ZR060_MER,
513 ZR060_MER_DQT | ZR060_MER_DHT |
514 ((ptr->com.len > 0) ? ZR060_MER_Com : 0) |
515 ((ptr->app.len > 0) ? ZR060_MER_App : 0));
516
517 /* Setup the Video Frontend */
518 /* Limit pixel range to 16..235 as per CCIR-601 */
519 zr36060_write(ptr, ZR060_VCR, ZR060_VCR_Range);
520
521 } else {
522 dprintk(2, "%s: EXPANSION SETUP\n", ptr->name);
523
524 zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
525
526 /* 060 communicates with 067 in master mode */
527 zr36060_write(ptr, ZR060_CIR, ZR060_CIR_CodeMstr);
528
529 /* Decompression */
530 zr36060_write(ptr, ZR060_CMR, 0);
531
532 /* Must be zero */
533 zr36060_write(ptr, ZR060_MBZ, 0x00);
534 zr36060_write(ptr, ZR060_TCR_HI, 0x00);
535 zr36060_write(ptr, ZR060_TCR_LO, 0x00);
536
537 /* Disable all IRQs - no DataErr means autoreset */
538 zr36060_write(ptr, ZR060_IMR, 0);
539
540 /* setup misc. data for expansion */
541 zr36060_write(ptr, ZR060_MER, 0);
542
543 /* setup the fixed jpeg tables - maybe variable, though -
544 * (see table init section above) */
545 zr36060_pushit(ptr, ZR060_DHT_IDX, sizeof(zr36060_dht),
546 zr36060_dht);
547
548 /* Setup the Video Frontend */
549 //zr36060_write(ptr, ZR060_VCR, ZR060_VCR_FIExt);
550 //this doesn't seem right and doesn't work...
551 zr36060_write(ptr, ZR060_VCR, ZR060_VCR_Range);
552 }
553
554 /* Load the tables */
555 zr36060_write(ptr, ZR060_LOAD,
556 ZR060_LOAD_SyncRst | ZR060_LOAD_Load);
557 zr36060_wait_end(ptr);
558 dprintk(2, "%s: Status after table preload: 0x%02x\n", ptr->name,
559 ptr->status);
560
561 if (ptr->status & ZR060_CFSR_Busy) {
562 dprintk(1, KERN_ERR "%s: init aborted!\n", ptr->name);
563 return; // something is wrong, its timed out!!!!
564 }
565 }
566
567 /* =========================================================================
568 CODEC API FUNCTIONS
569
570 this functions are accessed by the master via the API structure
571 ========================================================================= */
572
573 /* set compression/expansion mode and launches codec -
574 this should be the last call from the master before starting processing */
575 static int
576 zr36060_set_mode (struct videocodec *codec,
577 int mode)
578 {
579 struct zr36060 *ptr = (struct zr36060 *) codec->data;
580
581 dprintk(2, "%s: set_mode %d call\n", ptr->name, mode);
582
583 if ((mode != CODEC_DO_EXPANSION) && (mode != CODEC_DO_COMPRESSION))
584 return -EINVAL;
585
586 ptr->mode = mode;
587 zr36060_init(ptr);
588
589 return 0;
590 }
591
592 /* set picture size (norm is ignored as the codec doesn't know about it) */
593 static int
594 zr36060_set_video (struct videocodec *codec,
595 struct tvnorm *norm,
596 struct vfe_settings *cap,
597 struct vfe_polarity *pol)
598 {
599 struct zr36060 *ptr = (struct zr36060 *) codec->data;
600 u32 reg;
601 int size;
602
603 dprintk(2, "%s: set_video %d/%d-%dx%d (%%%d) call\n", ptr->name,
604 cap->x, cap->y, cap->width, cap->height, cap->decimation);
605
606 /* if () return -EINVAL;
607 * trust the master driver that it knows what it does - so
608 * we allow invalid startx/y and norm for now ... */
609 ptr->width = cap->width / (cap->decimation & 0xff);
610 ptr->height = cap->height / (cap->decimation >> 8);
611
612 zr36060_write(ptr, ZR060_LOAD, ZR060_LOAD_SyncRst);
613
614 /* Note that VSPol/HSPol bits in zr36060 have the opposite
615 * meaning of their zr360x7 counterparts with the same names
616 * N.b. for VSPol this is only true if FIVEdge = 0 (default,
617 * left unchanged here - in accordance with datasheet).
618 */
619 reg = (!pol->vsync_pol ? ZR060_VPR_VSPol : 0)
620 | (!pol->hsync_pol ? ZR060_VPR_HSPol : 0)
621 | (pol->field_pol ? ZR060_VPR_FIPol : 0)
622 | (pol->blank_pol ? ZR060_VPR_BLPol : 0)
623 | (pol->subimg_pol ? ZR060_VPR_SImgPol : 0)
624 | (pol->poe_pol ? ZR060_VPR_PoePol : 0)
625 | (pol->pvalid_pol ? ZR060_VPR_PValPol : 0)
626 | (pol->vclk_pol ? ZR060_VPR_VCLKPol : 0);
627 zr36060_write(ptr, ZR060_VPR, reg);
628
629 reg = 0;
630 switch (cap->decimation & 0xff) {
631 default:
632 case 1:
633 break;
634
635 case 2:
636 reg |= ZR060_SR_HScale2;
637 break;
638
639 case 4:
640 reg |= ZR060_SR_HScale4;
641 break;
642 }
643
644 switch (cap->decimation >> 8) {
645 default:
646 case 1:
647 break;
648
649 case 2:
650 reg |= ZR060_SR_VScale;
651 break;
652 }
653 zr36060_write(ptr, ZR060_SR, reg);
654
655 zr36060_write(ptr, ZR060_BCR_Y, 0x00);
656 zr36060_write(ptr, ZR060_BCR_U, 0x80);
657 zr36060_write(ptr, ZR060_BCR_V, 0x80);
658
659 /* sync generator */
660
661 reg = norm->Ht - 1; /* Vtotal */
662 zr36060_write(ptr, ZR060_SGR_VTOTAL_HI, (reg >> 8) & 0xff);
663 zr36060_write(ptr, ZR060_SGR_VTOTAL_LO, (reg >> 0) & 0xff);
664
665 reg = norm->Wt - 1; /* Htotal */
666 zr36060_write(ptr, ZR060_SGR_HTOTAL_HI, (reg >> 8) & 0xff);
667 zr36060_write(ptr, ZR060_SGR_HTOTAL_LO, (reg >> 0) & 0xff);
668
669 reg = 6 - 1; /* VsyncSize */
670 zr36060_write(ptr, ZR060_SGR_VSYNC, reg);
671
672 //reg = 30 - 1; /* HsyncSize */
673 ///*CP*/ reg = (zr->params.norm == 1 ? 57 : 68);
674 reg = 68;
675 zr36060_write(ptr, ZR060_SGR_HSYNC, reg);
676
677 reg = norm->VStart - 1; /* BVstart */
678 zr36060_write(ptr, ZR060_SGR_BVSTART, reg);
679
680 reg += norm->Ha / 2; /* BVend */
681 zr36060_write(ptr, ZR060_SGR_BVEND_HI, (reg >> 8) & 0xff);
682 zr36060_write(ptr, ZR060_SGR_BVEND_LO, (reg >> 0) & 0xff);
683
684 reg = norm->HStart - 1; /* BHstart */
685 zr36060_write(ptr, ZR060_SGR_BHSTART, reg);
686
687 reg += norm->Wa; /* BHend */
688 zr36060_write(ptr, ZR060_SGR_BHEND_HI, (reg >> 8) & 0xff);
689 zr36060_write(ptr, ZR060_SGR_BHEND_LO, (reg >> 0) & 0xff);
690
691 /* active area */
692 reg = cap->y + norm->VStart; /* Vstart */
693 zr36060_write(ptr, ZR060_AAR_VSTART_HI, (reg >> 8) & 0xff);
694 zr36060_write(ptr, ZR060_AAR_VSTART_LO, (reg >> 0) & 0xff);
695
696 reg += cap->height; /* Vend */
697 zr36060_write(ptr, ZR060_AAR_VEND_HI, (reg >> 8) & 0xff);
698 zr36060_write(ptr, ZR060_AAR_VEND_LO, (reg >> 0) & 0xff);
699
700 reg = cap->x + norm->HStart; /* Hstart */
701 zr36060_write(ptr, ZR060_AAR_HSTART_HI, (reg >> 8) & 0xff);
702 zr36060_write(ptr, ZR060_AAR_HSTART_LO, (reg >> 0) & 0xff);
703
704 reg += cap->width; /* Hend */
705 zr36060_write(ptr, ZR060_AAR_HEND_HI, (reg >> 8) & 0xff);
706 zr36060_write(ptr, ZR060_AAR_HEND_LO, (reg >> 0) & 0xff);
707
708 /* subimage area */
709 reg = norm->VStart - 4; /* SVstart */
710 zr36060_write(ptr, ZR060_SWR_VSTART_HI, (reg >> 8) & 0xff);
711 zr36060_write(ptr, ZR060_SWR_VSTART_LO, (reg >> 0) & 0xff);
712
713 reg += norm->Ha / 2 + 8; /* SVend */
714 zr36060_write(ptr, ZR060_SWR_VEND_HI, (reg >> 8) & 0xff);
715 zr36060_write(ptr, ZR060_SWR_VEND_LO, (reg >> 0) & 0xff);
716
717 reg = norm->HStart /*+ 64 */ - 4; /* SHstart */
718 zr36060_write(ptr, ZR060_SWR_HSTART_HI, (reg >> 8) & 0xff);
719 zr36060_write(ptr, ZR060_SWR_HSTART_LO, (reg >> 0) & 0xff);
720
721 reg += norm->Wa + 8; /* SHend */
722 zr36060_write(ptr, ZR060_SWR_HEND_HI, (reg >> 8) & 0xff);
723 zr36060_write(ptr, ZR060_SWR_HEND_LO, (reg >> 0) & 0xff);
724
725 size = ptr->width * ptr->height;
726 /* Target compressed field size in bits: */
727 size = size * 16; /* uncompressed size in bits */
728 /* (Ronald) by default, quality = 100 is a compression
729 * ratio 1:2. Setting low_bitrate (insmod option) sets
730 * it to 1:4 (instead of 1:2, zr36060 max) as limit because the
731 * buz can't handle more at decimation=1... Use low_bitrate if
732 * you have a Buz, unless you know what you're doing */
733 size = size * cap->quality / (low_bitrate ? 400 : 200);
734 /* Lower limit (arbitrary, 1 KB) */
735 if (size < 8192)
736 size = 8192;
737 /* Upper limit: 7/8 of the code buffers */
738 if (size > ptr->total_code_vol * 7)
739 size = ptr->total_code_vol * 7;
740
741 ptr->real_code_vol = size >> 3; /* in bytes */
742
743 /* the MBCVR is the *maximum* block volume, according to the
744 * JPEG ISO specs, this shouldn't be used, since that allows
745 * for the best encoding quality. So set it to it's max value */
746 reg = ptr->max_block_vol;
747 zr36060_write(ptr, ZR060_MBCVR, reg);
748
749 return 0;
750 }
751
752 /* additional control functions */
753 static int
754 zr36060_control (struct videocodec *codec,
755 int type,
756 int size,
757 void *data)
758 {
759 struct zr36060 *ptr = (struct zr36060 *) codec->data;
760 int *ival = (int *) data;
761
762 dprintk(2, "%s: control %d call with %d byte\n", ptr->name, type,
763 size);
764
765 switch (type) {
766 case CODEC_G_STATUS: /* get last status */
767 if (size != sizeof(int))
768 return -EFAULT;
769 zr36060_read_status(ptr);
770 *ival = ptr->status;
771 break;
772
773 case CODEC_G_CODEC_MODE:
774 if (size != sizeof(int))
775 return -EFAULT;
776 *ival = CODEC_MODE_BJPG;
777 break;
778
779 case CODEC_S_CODEC_MODE:
780 if (size != sizeof(int))
781 return -EFAULT;
782 if (*ival != CODEC_MODE_BJPG)
783 return -EINVAL;
784 /* not needed, do nothing */
785 return 0;
786
787 case CODEC_G_VFE:
788 case CODEC_S_VFE:
789 /* not needed, do nothing */
790 return 0;
791
792 case CODEC_S_MMAP:
793 /* not available, give an error */
794 return -ENXIO;
795
796 case CODEC_G_JPEG_TDS_BYTE: /* get target volume in byte */
797 if (size != sizeof(int))
798 return -EFAULT;
799 *ival = ptr->total_code_vol;
800 break;
801
802 case CODEC_S_JPEG_TDS_BYTE: /* get target volume in byte */
803 if (size != sizeof(int))
804 return -EFAULT;
805 ptr->total_code_vol = *ival;
806 ptr->real_code_vol = (ptr->total_code_vol * 6) >> 3;
807 break;
808
809 case CODEC_G_JPEG_SCALE: /* get scaling factor */
810 if (size != sizeof(int))
811 return -EFAULT;
812 *ival = zr36060_read_scalefactor(ptr);
813 break;
814
815 case CODEC_S_JPEG_SCALE: /* set scaling factor */
816 if (size != sizeof(int))
817 return -EFAULT;
818 ptr->scalefact = *ival;
819 break;
820
821 case CODEC_G_JPEG_APP_DATA: { /* get appn marker data */
822 struct jpeg_app_marker *app = data;
823
824 if (size != sizeof(struct jpeg_app_marker))
825 return -EFAULT;
826
827 *app = ptr->app;
828 break;
829 }
830
831 case CODEC_S_JPEG_APP_DATA: { /* set appn marker data */
832 struct jpeg_app_marker *app = data;
833
834 if (size != sizeof(struct jpeg_app_marker))
835 return -EFAULT;
836
837 ptr->app = *app;
838 break;
839 }
840
841 case CODEC_G_JPEG_COM_DATA: { /* get comment marker data */
842 struct jpeg_com_marker *com = data;
843
844 if (size != sizeof(struct jpeg_com_marker))
845 return -EFAULT;
846
847 *com = ptr->com;
848 break;
849 }
850
851 case CODEC_S_JPEG_COM_DATA: { /* set comment marker data */
852 struct jpeg_com_marker *com = data;
853
854 if (size != sizeof(struct jpeg_com_marker))
855 return -EFAULT;
856
857 ptr->com = *com;
858 break;
859 }
860
861 default:
862 return -EINVAL;
863 }
864
865 return size;
866 }
867
868 /* =========================================================================
869 Exit and unregister function:
870
871 Deinitializes Zoran's JPEG processor
872 ========================================================================= */
873
874 static int
875 zr36060_unset (struct videocodec *codec)
876 {
877 struct zr36060 *ptr = codec->data;
878
879 if (ptr) {
880 /* do wee need some codec deinit here, too ???? */
881
882 dprintk(1, "%s: finished codec #%d\n", ptr->name,
883 ptr->num);
884 kfree(ptr);
885 codec->data = NULL;
886
887 zr36060_codecs--;
888 return 0;
889 }
890
891 return -EFAULT;
892 }
893
894 /* =========================================================================
895 Setup and registry function:
896
897 Initializes Zoran's JPEG processor
898
899 Also sets pixel size, average code size, mode (compr./decompr.)
900 (the given size is determined by the processor with the video interface)
901 ========================================================================= */
902
903 static int
904 zr36060_setup (struct videocodec *codec)
905 {
906 struct zr36060 *ptr;
907 int res;
908
909 dprintk(2, "zr36060: initializing MJPEG subsystem #%d.\n",
910 zr36060_codecs);
911
912 if (zr36060_codecs == MAX_CODECS) {
913 dprintk(1,
914 KERN_ERR "zr36060: Can't attach more codecs!\n");
915 return -ENOSPC;
916 }
917 //mem structure init
918 codec->data = ptr = kzalloc(sizeof(struct zr36060), GFP_KERNEL);
919 if (NULL == ptr) {
920 dprintk(1, KERN_ERR "zr36060: Can't get enough memory!\n");
921 return -ENOMEM;
922 }
923
924 snprintf(ptr->name, sizeof(ptr->name), "zr36060[%d]",
925 zr36060_codecs);
926 ptr->num = zr36060_codecs++;
927 ptr->codec = codec;
928
929 //testing
930 res = zr36060_basic_test(ptr);
931 if (res < 0) {
932 zr36060_unset(codec);
933 return res;
934 }
935 //final setup
936 memcpy(ptr->h_samp_ratio, zr36060_decimation_h, 8);
937 memcpy(ptr->v_samp_ratio, zr36060_decimation_v, 8);
938
939 ptr->bitrate_ctrl = 0; /* 0 or 1 - fixed file size flag
940 * (what is the difference?) */
941 ptr->mode = CODEC_DO_COMPRESSION;
942 ptr->width = 384;
943 ptr->height = 288;
944 ptr->total_code_vol = 16000; /* CHECKME */
945 ptr->real_code_vol = (ptr->total_code_vol * 6) >> 3;
946 ptr->max_block_vol = 240; /* CHECKME, was 120 is 240 */
947 ptr->scalefact = 0x100;
948 ptr->dri = 1; /* CHECKME, was 8 is 1 */
949
950 /* by default, no COM or APP markers - app should set those */
951 ptr->com.len = 0;
952 ptr->app.appn = 0;
953 ptr->app.len = 0;
954
955 zr36060_init(ptr);
956
957 dprintk(1, KERN_INFO "%s: codec attached and running\n",
958 ptr->name);
959
960 return 0;
961 }
962
963 static const struct videocodec zr36060_codec = {
964 .owner = THIS_MODULE,
965 .name = "zr36060",
966 .magic = 0L, // magic not used
967 .flags =
968 CODEC_FLAG_JPEG | CODEC_FLAG_HARDWARE | CODEC_FLAG_ENCODER |
969 CODEC_FLAG_DECODER | CODEC_FLAG_VFE,
970 .type = CODEC_TYPE_ZR36060,
971 .setup = zr36060_setup, // functionality
972 .unset = zr36060_unset,
973 .set_mode = zr36060_set_mode,
974 .set_video = zr36060_set_video,
975 .control = zr36060_control,
976 // others are not used
977 };
978
979 /* =========================================================================
980 HOOK IN DRIVER AS KERNEL MODULE
981 ========================================================================= */
982
983 static int __init
984 zr36060_init_module (void)
985 {
986 //dprintk(1, "zr36060 driver %s\n",ZR060_VERSION);
987 zr36060_codecs = 0;
988 return videocodec_register(&zr36060_codec);
989 }
990
991 static void __exit
992 zr36060_cleanup_module (void)
993 {
994 if (zr36060_codecs) {
995 dprintk(1,
996 "zr36060: something's wrong - %d codecs left somehow.\n",
997 zr36060_codecs);
998 }
999
1000 /* however, we can't just stay alive */
1001 videocodec_unregister(&zr36060_codec);
1002 }
1003
1004 module_init(zr36060_init_module);
1005 module_exit(zr36060_cleanup_module);
1006
1007 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@skynet.be>");
1008 MODULE_DESCRIPTION("Driver module for ZR36060 jpeg processors "
1009 ZR060_VERSION);
1010 MODULE_LICENSE("GPL");
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