2 * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1
4 * Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be>
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.
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.
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.
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <linux/types.h>
25 #include <linux/slab.h>
27 #include <linux/byteorder/swab.h>
30 #include <asm/uaccess.h>
32 #include <linux/i2c.h>
33 #include <linux/i2c-dev.h>
35 #define I2C_NAME(x) (x)->name
37 #include <linux/videodev.h>
38 #include <linux/video_decoder.h>
40 #define I2C_VPX3220 0x86
41 #define VPX3220_DEBUG KERN_DEBUG "vpx3220: "
44 module_param(debug, int, 0);
45 MODULE_PARM_DESC(debug, "Debug level (0-1)");
47 #define dprintk(num, format, args...) \
50 printk(format, ##args); \
53 #define VPX_TIMEOUT_COUNT 10
55 /* ----------------------------------------------------------------------- */
58 unsigned char reg[255];
69 static char *inputs[] = { "internal", "composite", "svideo" };
71 /* ----------------------------------------------------------------------- */
73 vpx3220_write (struct i2c_client *client,
77 struct vpx3220 *decoder = i2c_get_clientdata(client);
79 decoder->reg[reg] = value;
80 return i2c_smbus_write_byte_data(client, reg, value);
84 vpx3220_read (struct i2c_client *client,
87 return i2c_smbus_read_byte_data(client, reg);
91 vpx3220_fp_status (struct i2c_client *client)
96 for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
97 status = vpx3220_read(client, 0x29);
112 vpx3220_fp_write (struct i2c_client *client,
116 /* Write the 16-bit address to the FPWR register */
117 if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
118 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
122 if (vpx3220_fp_status(client) < 0)
125 /* Write the 16-bit data to the FPDAT register */
126 if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
127 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
135 vpx3220_fp_read (struct i2c_client *client,
140 /* Write the 16-bit address to the FPRD register */
141 if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
142 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
146 if (vpx3220_fp_status(client) < 0)
149 /* Read the 16-bit data from the FPDAT register */
150 data = i2c_smbus_read_word_data(client, 0x28);
152 dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__);
160 vpx3220_write_block (struct i2c_client *client,
170 vpx3220_write(client, reg, *data++)) < 0)
179 vpx3220_write_fp_block (struct i2c_client *client,
188 ret |= vpx3220_fp_write(client, reg, *data++);
195 /* ---------------------------------------------------------------------- */
197 static const unsigned short init_ntsc[] = {
198 0x1c, 0x00, /* NTSC tint angle */
199 0x88, 17, /* Window 1 vertical */
200 0x89, 240, /* Vertical lines in */
201 0x8a, 240, /* Vertical lines out */
202 0x8b, 000, /* Horizontal begin */
203 0x8c, 640, /* Horizontal length */
204 0x8d, 640, /* Number of pixels */
205 0x8f, 0xc00, /* Disable window 2 */
206 0xf0, 0x73, /* 13.5 MHz transport, Forced
207 * mode, latch windows */
208 0xf2, 0x13, /* NTSC M, composite input */
209 0xe7, 0x1e1, /* Enable vertical standard
210 * locking @ 240 lines */
213 static const unsigned short init_pal[] = {
214 0x88, 23, /* Window 1 vertical begin */
215 0x89, 288, /* Vertical lines in (16 lines
216 * skipped by the VFE) */
217 0x8a, 288, /* Vertical lines out (16 lines
218 * skipped by the VFE) */
219 0x8b, 16, /* Horizontal begin */
220 0x8c, 768, /* Horizontal length */
221 0x8d, 784, /* Number of pixels
222 * Must be >= Horizontal begin + Horizontal length */
223 0x8f, 0xc00, /* Disable window 2 */
224 0xf0, 0x77, /* 13.5 MHz transport, Forced
225 * mode, latch windows */
226 0xf2, 0x3d1, /* PAL B,G,H,I, composite input */
227 0xe7, 0x241, /* PAL/SECAM set to 288 lines */
230 static const unsigned short init_secam[] = {
231 0x88, 23, /* Window 1 vertical begin */
232 0x89, 288, /* Vertical lines in (16 lines
233 * skipped by the VFE) */
234 0x8a, 288, /* Vertical lines out (16 lines
235 * skipped by the VFE) */
236 0x8b, 16, /* Horizontal begin */
237 0x8c, 768, /* Horizontal length */
238 0x8d, 784, /* Number of pixels
239 * Must be >= Horizontal begin + Horizontal length */
240 0x8f, 0xc00, /* Disable window 2 */
241 0xf0, 0x77, /* 13.5 MHz transport, Forced
242 * mode, latch windows */
243 0xf2, 0x3d5, /* SECAM, composite input */
244 0xe7, 0x241, /* PAL/SECAM set to 288 lines */
247 static const unsigned char init_common[] = {
248 0xf2, 0x00, /* Disable all outputs */
249 0x33, 0x0d, /* Luma : VIN2, Chroma : CIN
251 0xd8, 0xa8, /* HREF/VREF active high, VREF
252 * pulse = 2, Odd/Even flag */
253 0x20, 0x03, /* IF compensation 0dB/oct */
254 0xe0, 0xff, /* Open up all comparators */
260 0xe6, 0x00, /* Brightness set to 0 */
261 0xe7, 0xe0, /* Contrast to 1.0, noise shaping
262 * 10 to 8 2-bit error diffusion */
263 0xe8, 0xf8, /* YUV422, CbCr binary offset,
265 0xea, 0x18, /* LLC2 connected, output FIFO
266 * reset with VACTintern */
267 0xf0, 0x8a, /* Half full level to 10, bus
268 * shuffler [7:0, 23:16, 15:8] */
269 0xf1, 0x18, /* Single clock, sync mode, no
270 * FE delay, no HLEN counter */
271 0xf8, 0x12, /* Port A, PIXCLK, HF# & FE#
273 0xf9, 0x24, /* Port B, HREF, VREF, PREF &
274 * ALPHA strength to 4 */
277 static const unsigned short init_fp[] = {
279 0xa0, 2070, /* ACC reference */
287 0x4b, 0x298, /* PLL gain */
291 vpx3220_dump_i2c (struct i2c_client *client)
293 int len = sizeof(init_common);
294 const unsigned char *data = init_common;
298 KERN_DEBUG "vpx3216b i2c reg 0x%02x data 0x%02x\n",
299 *data, vpx3220_read(client, *data));
306 vpx3220_command (struct i2c_client *client,
310 struct vpx3220 *decoder = i2c_get_clientdata(client);
315 vpx3220_write_block(client, init_common,
316 sizeof(init_common));
317 vpx3220_write_fp_block(client, init_fp,
318 sizeof(init_fp) >> 1);
319 switch (decoder->norm) {
321 case VIDEO_MODE_NTSC:
322 vpx3220_write_fp_block(client, init_ntsc,
323 sizeof(init_ntsc) >> 1);
327 vpx3220_write_fp_block(client, init_pal,
328 sizeof(init_pal) >> 1);
330 case VIDEO_MODE_SECAM:
331 vpx3220_write_fp_block(client, init_secam,
332 sizeof(init_secam) >> 1);
335 vpx3220_write_fp_block(client, init_pal,
336 sizeof(init_pal) >> 1);
344 vpx3220_dump_i2c(client);
348 case DECODER_GET_CAPABILITIES:
350 struct video_decoder_capability *cap = arg;
352 dprintk(1, KERN_DEBUG "%s: DECODER_GET_CAPABILITIES\n",
355 cap->flags = VIDEO_DECODER_PAL |
357 VIDEO_DECODER_SECAM |
365 case DECODER_GET_STATUS:
369 dprintk(1, KERN_INFO "%s: DECODER_GET_STATUS\n",
372 status = vpx3220_fp_read(client, 0x0f3);
374 dprintk(1, KERN_INFO "%s: status: 0x%04x\n", I2C_NAME(client),
380 if ((status & 0x20) == 0) {
381 res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR;
383 switch (status & 0x18) {
389 res |= DECODER_STATUS_PAL;
393 res |= DECODER_STATUS_SECAM;
399 res |= DECODER_STATUS_NTSC;
408 case DECODER_SET_NORM:
410 int *iarg = arg, data;
412 dprintk(1, KERN_DEBUG "%s: DECODER_SET_NORM %d\n",
413 I2C_NAME(client), *iarg);
416 case VIDEO_MODE_NTSC:
417 vpx3220_write_fp_block(client, init_ntsc,
418 sizeof(init_ntsc) >> 1);
419 dprintk(1, KERN_INFO "%s: norm switched to NTSC\n",
424 vpx3220_write_fp_block(client, init_pal,
425 sizeof(init_pal) >> 1);
426 dprintk(1, KERN_INFO "%s: norm switched to PAL\n",
430 case VIDEO_MODE_SECAM:
431 vpx3220_write_fp_block(client, init_secam,
432 sizeof(init_secam) >> 1);
433 dprintk(1, KERN_INFO "%s: norm switched to SECAM\n",
437 case VIDEO_MODE_AUTO:
438 /* FIXME This is only preliminary support */
439 data = vpx3220_fp_read(client, 0xf2) & 0x20;
440 vpx3220_fp_write(client, 0xf2, 0x00c0 | data);
441 dprintk(1, KERN_INFO "%s: norm switched to Auto\n",
449 decoder->norm = *iarg;
453 case DECODER_SET_INPUT:
455 int *iarg = arg, data;
457 /* RJ: *iarg = 0: ST8 (PCTV) input
458 *iarg = 1: COMPOSITE input
459 *iarg = 2: SVHS input */
461 const int input[3][2] = {
467 if (*iarg < 0 || *iarg > 2)
470 dprintk(1, KERN_INFO "%s: input switched to %s\n",
471 I2C_NAME(client), inputs[*iarg]);
473 vpx3220_write(client, 0x33, input[*iarg][0]);
475 data = vpx3220_fp_read(client, 0xf2) & ~(0x0020);
478 /* 0x0010 is required to latch the setting */
479 vpx3220_fp_write(client, 0xf2,
480 data | (input[*iarg][1] << 5) | 0x0010);
486 case DECODER_SET_OUTPUT:
490 /* not much choice of outputs */
497 case DECODER_ENABLE_OUTPUT:
501 dprintk(1, KERN_DEBUG "%s: DECODER_ENABLE_OUTPUT %d\n",
502 I2C_NAME(client), *iarg);
504 vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00));
508 case DECODER_SET_PICTURE:
510 struct video_picture *pic = arg;
512 if (decoder->bright != pic->brightness) {
513 /* We want -128 to 128 we get 0-65535 */
514 decoder->bright = pic->brightness;
515 vpx3220_write(client, 0xe6,
516 (decoder->bright - 32768) >> 8);
518 if (decoder->contrast != pic->contrast) {
519 /* We want 0 to 64 we get 0-65535 */
520 /* Bit 7 and 8 is for noise shaping */
521 decoder->contrast = pic->contrast;
522 vpx3220_write(client, 0xe7,
523 (decoder->contrast >> 10) + 192);
525 if (decoder->sat != pic->colour) {
526 /* We want 0 to 4096 we get 0-65535 */
527 decoder->sat = pic->colour;
528 vpx3220_fp_write(client, 0xa0,
531 if (decoder->hue != pic->hue) {
532 /* We want -512 to 512 we get 0-65535 */
533 decoder->hue = pic->hue;
534 vpx3220_fp_write(client, 0x1c,
535 ((decoder->hue - 32768) >> 6) & 0xFFF);
548 vpx3220_init_client (struct i2c_client *client)
550 vpx3220_write_block(client, init_common, sizeof(init_common));
551 vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1);
553 vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1);
558 /* -----------------------------------------------------------------------
559 * Client managment code
564 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
566 static unsigned short normal_i2c[] =
567 { I2C_VPX3220 >> 1, (I2C_VPX3220 >> 1) + 4,
571 static unsigned short ignore = I2C_CLIENT_END;
573 static struct i2c_client_address_data addr_data = {
574 .normal_i2c = normal_i2c,
579 static struct i2c_driver vpx3220_i2c_driver;
582 vpx3220_detach_client (struct i2c_client *client)
584 struct vpx3220 *decoder = i2c_get_clientdata(client);
587 err = i2c_detach_client(client);
599 vpx3220_detect_client (struct i2c_adapter *adapter,
604 struct i2c_client *client;
605 struct vpx3220 *decoder;
607 dprintk(1, VPX3220_DEBUG "%s\n", __func__);
609 /* Check if the adapter supports the needed features */
610 if (!i2c_check_functionality
611 (adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
614 client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
615 if (client == NULL) {
619 memset(client, 0, sizeof(struct i2c_client));
621 client->addr = address;
622 client->adapter = adapter;
623 client->driver = &vpx3220_i2c_driver;
624 client->flags = I2C_CLIENT_ALLOW_USE;
626 /* Check for manufacture ID and part number */
631 id = vpx3220_read(client, 0x00);
635 "vpx3220_attach: Wrong manufacturer ID (0x%02x)\n",
641 pn = (vpx3220_read(client, 0x02) << 8) +
642 vpx3220_read(client, 0x01);
645 strlcpy(I2C_NAME(client), "vpx3220a",
646 sizeof(I2C_NAME(client)));
649 strlcpy(I2C_NAME(client), "vpx3216b",
650 sizeof(I2C_NAME(client)));
653 strlcpy(I2C_NAME(client), "vpx3214c",
654 sizeof(I2C_NAME(client)));
659 "%s: Wrong part number (0x%04x)\n",
665 strlcpy(I2C_NAME(client), "forced vpx32xx",
666 sizeof(I2C_NAME(client)));
669 decoder = kmalloc(sizeof(struct vpx3220), GFP_KERNEL);
670 if (decoder == NULL) {
674 memset(decoder, 0, sizeof(struct vpx3220));
675 decoder->norm = VIDEO_MODE_PAL;
678 decoder->bright = 32768;
679 decoder->contrast = 32768;
680 decoder->hue = 32768;
681 decoder->sat = 32768;
682 i2c_set_clientdata(client, decoder);
684 err = i2c_attach_client(client);
691 dprintk(1, KERN_INFO "%s: vpx32xx client found at address 0x%02x\n",
692 I2C_NAME(client), client->addr << 1);
694 vpx3220_init_client(client);
700 vpx3220_attach_adapter (struct i2c_adapter *adapter)
704 ret = i2c_probe(adapter, &addr_data, &vpx3220_detect_client);
705 dprintk(1, VPX3220_DEBUG "%s: i2c_probe returned %d\n",
710 /* -----------------------------------------------------------------------
711 * Driver initialization and cleanup code
714 static struct i2c_driver vpx3220_i2c_driver = {
715 .owner = THIS_MODULE,
718 .id = I2C_DRIVERID_VPX3220,
719 .flags = I2C_DF_NOTIFY,
721 .attach_adapter = vpx3220_attach_adapter,
722 .detach_client = vpx3220_detach_client,
723 .command = vpx3220_command,
729 return i2c_add_driver(&vpx3220_i2c_driver);
733 vpx3220_cleanup (void)
735 i2c_del_driver(&vpx3220_i2c_driver);
738 module_init(vpx3220_init);
739 module_exit(vpx3220_cleanup);
741 MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video encoder driver");
742 MODULE_AUTHOR("Laurent Pinchart");
743 MODULE_LICENSE("GPL");