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 <asm/uaccess.h>
26 #include <linux/i2c.h>
27 #include <linux/videodev2.h>
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-chip-ident.h>
30 #include <media/v4l2-i2c-drv-legacy.h>
32 MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver");
33 MODULE_AUTHOR("Laurent Pinchart");
34 MODULE_LICENSE("GPL");
37 module_param(debug, int, 0);
38 MODULE_PARM_DESC(debug, "Debug level (0-1)");
40 static unsigned short normal_i2c[] = { 0x86 >> 1, 0x8e >> 1, I2C_CLIENT_END };
44 #define VPX_TIMEOUT_COUNT 10
46 /* ----------------------------------------------------------------------- */
49 struct v4l2_subdev sd;
50 unsigned char reg[255];
62 static inline struct vpx3220 *to_vpx3220(struct v4l2_subdev *sd)
64 return container_of(sd, struct vpx3220, sd);
67 static char *inputs[] = { "internal", "composite", "svideo" };
69 /* ----------------------------------------------------------------------- */
71 static inline int vpx3220_write(struct v4l2_subdev *sd, u8 reg, u8 value)
73 struct i2c_client *client = v4l2_get_subdevdata(sd);
74 struct vpx3220 *decoder = i2c_get_clientdata(client);
76 decoder->reg[reg] = value;
77 return i2c_smbus_write_byte_data(client, reg, value);
80 static inline int vpx3220_read(struct v4l2_subdev *sd, u8 reg)
82 struct i2c_client *client = v4l2_get_subdevdata(sd);
84 return i2c_smbus_read_byte_data(client, reg);
87 static int vpx3220_fp_status(struct v4l2_subdev *sd)
92 for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
93 status = vpx3220_read(sd, 0x29);
107 static int vpx3220_fp_write(struct v4l2_subdev *sd, u8 fpaddr, u16 data)
109 struct i2c_client *client = v4l2_get_subdevdata(sd);
111 /* Write the 16-bit address to the FPWR register */
112 if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
113 v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
117 if (vpx3220_fp_status(sd) < 0)
120 /* Write the 16-bit data to the FPDAT register */
121 if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
122 v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
129 static u16 vpx3220_fp_read(struct v4l2_subdev *sd, u16 fpaddr)
131 struct i2c_client *client = v4l2_get_subdevdata(sd);
134 /* Write the 16-bit address to the FPRD register */
135 if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
136 v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
140 if (vpx3220_fp_status(sd) < 0)
143 /* Read the 16-bit data from the FPDAT register */
144 data = i2c_smbus_read_word_data(client, 0x28);
146 v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
153 static int vpx3220_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
160 ret = vpx3220_write(sd, reg, *data++);
169 static int vpx3220_write_fp_block(struct v4l2_subdev *sd,
170 const u16 *data, unsigned int len)
177 ret |= vpx3220_fp_write(sd, reg, *data++);
184 /* ---------------------------------------------------------------------- */
186 static const unsigned short init_ntsc[] = {
187 0x1c, 0x00, /* NTSC tint angle */
188 0x88, 17, /* Window 1 vertical */
189 0x89, 240, /* Vertical lines in */
190 0x8a, 240, /* Vertical lines out */
191 0x8b, 000, /* Horizontal begin */
192 0x8c, 640, /* Horizontal length */
193 0x8d, 640, /* Number of pixels */
194 0x8f, 0xc00, /* Disable window 2 */
195 0xf0, 0x73, /* 13.5 MHz transport, Forced
196 * mode, latch windows */
197 0xf2, 0x13, /* NTSC M, composite input */
198 0xe7, 0x1e1, /* Enable vertical standard
199 * locking @ 240 lines */
202 static const unsigned short init_pal[] = {
203 0x88, 23, /* Window 1 vertical begin */
204 0x89, 288, /* Vertical lines in (16 lines
205 * skipped by the VFE) */
206 0x8a, 288, /* Vertical lines out (16 lines
207 * skipped by the VFE) */
208 0x8b, 16, /* Horizontal begin */
209 0x8c, 768, /* Horizontal length */
210 0x8d, 784, /* Number of pixels
211 * Must be >= Horizontal begin + Horizontal length */
212 0x8f, 0xc00, /* Disable window 2 */
213 0xf0, 0x77, /* 13.5 MHz transport, Forced
214 * mode, latch windows */
215 0xf2, 0x3d1, /* PAL B,G,H,I, composite input */
216 0xe7, 0x241, /* PAL/SECAM set to 288 lines */
219 static const unsigned short init_secam[] = {
220 0x88, 23, /* Window 1 vertical begin */
221 0x89, 288, /* Vertical lines in (16 lines
222 * skipped by the VFE) */
223 0x8a, 288, /* Vertical lines out (16 lines
224 * skipped by the VFE) */
225 0x8b, 16, /* Horizontal begin */
226 0x8c, 768, /* Horizontal length */
227 0x8d, 784, /* Number of pixels
228 * Must be >= Horizontal begin + Horizontal length */
229 0x8f, 0xc00, /* Disable window 2 */
230 0xf0, 0x77, /* 13.5 MHz transport, Forced
231 * mode, latch windows */
232 0xf2, 0x3d5, /* SECAM, composite input */
233 0xe7, 0x241, /* PAL/SECAM set to 288 lines */
236 static const unsigned char init_common[] = {
237 0xf2, 0x00, /* Disable all outputs */
238 0x33, 0x0d, /* Luma : VIN2, Chroma : CIN
240 0xd8, 0xa8, /* HREF/VREF active high, VREF
241 * pulse = 2, Odd/Even flag */
242 0x20, 0x03, /* IF compensation 0dB/oct */
243 0xe0, 0xff, /* Open up all comparators */
249 0xe6, 0x00, /* Brightness set to 0 */
250 0xe7, 0xe0, /* Contrast to 1.0, noise shaping
251 * 10 to 8 2-bit error diffusion */
252 0xe8, 0xf8, /* YUV422, CbCr binary offset,
254 0xea, 0x18, /* LLC2 connected, output FIFO
255 * reset with VACTintern */
256 0xf0, 0x8a, /* Half full level to 10, bus
257 * shuffler [7:0, 23:16, 15:8] */
258 0xf1, 0x18, /* Single clock, sync mode, no
259 * FE delay, no HLEN counter */
260 0xf8, 0x12, /* Port A, PIXCLK, HF# & FE#
262 0xf9, 0x24, /* Port B, HREF, VREF, PREF &
263 * ALPHA strength to 4 */
266 static const unsigned short init_fp[] = {
268 0xa0, 2070, /* ACC reference */
276 0x4b, 0x298, /* PLL gain */
280 static int vpx3220_init(struct v4l2_subdev *sd, u32 val)
282 struct vpx3220 *decoder = to_vpx3220(sd);
284 vpx3220_write_block(sd, init_common, sizeof(init_common));
285 vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
286 if (decoder->norm & V4L2_STD_NTSC)
287 vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
288 else if (decoder->norm & V4L2_STD_PAL)
289 vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
290 else if (decoder->norm & V4L2_STD_SECAM)
291 vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
293 vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
297 static int vpx3220_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
299 int res = V4L2_IN_ST_NO_SIGNAL, status;
302 v4l2_dbg(1, debug, sd, "VIDIOC_QUERYSTD/VIDIOC_INT_G_INPUT_STATUS\n");
304 status = vpx3220_fp_read(sd, 0x0f3);
306 v4l2_dbg(1, debug, sd, "status: 0x%04x\n", status);
311 if ((status & 0x20) == 0) {
314 switch (status & 0x18) {
323 std = V4L2_STD_SECAM;
340 static int vpx3220_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
342 return vpx3220_status(sd, NULL, std);
345 static int vpx3220_g_input_status(struct v4l2_subdev *sd, u32 *status)
347 return vpx3220_status(sd, status, NULL);
350 static int vpx3220_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
352 struct vpx3220 *decoder = to_vpx3220(sd);
355 /* Here we back up the input selection because it gets
356 overwritten when we fill the registers with the
357 choosen video norm */
358 temp_input = vpx3220_fp_read(sd, 0xf2);
360 v4l2_dbg(1, debug, sd, "VIDIOC_S_STD %llx\n", std);
361 if (std & V4L2_STD_NTSC) {
362 vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
363 v4l2_dbg(1, debug, sd, "norm switched to NTSC\n");
364 } else if (std & V4L2_STD_PAL) {
365 vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
366 v4l2_dbg(1, debug, sd, "norm switched to PAL\n");
367 } else if (std & V4L2_STD_SECAM) {
368 vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
369 v4l2_dbg(1, debug, sd, "norm switched to SECAM\n");
376 /* And here we set the backed up video input again */
377 vpx3220_fp_write(sd, 0xf2, temp_input | 0x0010);
382 static int vpx3220_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
386 /* RJ: route->input = 0: ST8 (PCTV) input
387 route->input = 1: COMPOSITE input
388 route->input = 2: SVHS input */
390 const int input[3][2] = {
396 if (route->input < 0 || route->input > 2)
399 v4l2_dbg(1, debug, sd, "input switched to %s\n", inputs[route->input]);
401 vpx3220_write(sd, 0x33, input[route->input][0]);
403 data = vpx3220_fp_read(sd, 0xf2) & ~(0x0020);
406 /* 0x0010 is required to latch the setting */
407 vpx3220_fp_write(sd, 0xf2,
408 data | (input[route->input][1] << 5) | 0x0010);
414 static int vpx3220_s_stream(struct v4l2_subdev *sd, int enable)
416 v4l2_dbg(1, debug, sd, "VIDIOC_STREAM%s\n", enable ? "ON" : "OFF");
418 vpx3220_write(sd, 0xf2, (enable ? 0x1b : 0x00));
422 static int vpx3220_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
425 case V4L2_CID_BRIGHTNESS:
426 v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
429 case V4L2_CID_CONTRAST:
430 v4l2_ctrl_query_fill(qc, 0, 63, 1, 32);
433 case V4L2_CID_SATURATION:
434 v4l2_ctrl_query_fill(qc, 0, 4095, 1, 2048);
438 v4l2_ctrl_query_fill(qc, -512, 511, 1, 0);
447 static int vpx3220_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
449 struct vpx3220 *decoder = to_vpx3220(sd);
452 case V4L2_CID_BRIGHTNESS:
453 ctrl->value = decoder->bright;
455 case V4L2_CID_CONTRAST:
456 ctrl->value = decoder->contrast;
458 case V4L2_CID_SATURATION:
459 ctrl->value = decoder->sat;
462 ctrl->value = decoder->hue;
470 static int vpx3220_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
472 struct vpx3220 *decoder = to_vpx3220(sd);
475 case V4L2_CID_BRIGHTNESS:
476 if (decoder->bright != ctrl->value) {
477 decoder->bright = ctrl->value;
478 vpx3220_write(sd, 0xe6, decoder->bright);
481 case V4L2_CID_CONTRAST:
482 if (decoder->contrast != ctrl->value) {
483 /* Bit 7 and 8 is for noise shaping */
484 decoder->contrast = ctrl->value;
485 vpx3220_write(sd, 0xe7, decoder->contrast + 192);
488 case V4L2_CID_SATURATION:
489 if (decoder->sat != ctrl->value) {
490 decoder->sat = ctrl->value;
491 vpx3220_fp_write(sd, 0xa0, decoder->sat);
495 if (decoder->hue != ctrl->value) {
496 decoder->hue = ctrl->value;
497 vpx3220_fp_write(sd, 0x1c, decoder->hue);
506 static int vpx3220_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
508 struct vpx3220 *decoder = to_vpx3220(sd);
509 struct i2c_client *client = v4l2_get_subdevdata(sd);
511 return v4l2_chip_ident_i2c_client(client, chip, decoder->ident, 0);
514 static int vpx3220_command(struct i2c_client *client, unsigned cmd, void *arg)
516 return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
519 /* ----------------------------------------------------------------------- */
521 static const struct v4l2_subdev_core_ops vpx3220_core_ops = {
522 .g_chip_ident = vpx3220_g_chip_ident,
523 .init = vpx3220_init,
524 .g_ctrl = vpx3220_g_ctrl,
525 .s_ctrl = vpx3220_s_ctrl,
526 .queryctrl = vpx3220_queryctrl,
529 static const struct v4l2_subdev_tuner_ops vpx3220_tuner_ops = {
530 .s_std = vpx3220_s_std,
533 static const struct v4l2_subdev_video_ops vpx3220_video_ops = {
534 .s_routing = vpx3220_s_routing,
535 .s_stream = vpx3220_s_stream,
536 .querystd = vpx3220_querystd,
537 .g_input_status = vpx3220_g_input_status,
540 static const struct v4l2_subdev_ops vpx3220_ops = {
541 .core = &vpx3220_core_ops,
542 .tuner = &vpx3220_tuner_ops,
543 .video = &vpx3220_video_ops,
546 /* -----------------------------------------------------------------------
547 * Client management code
550 static int vpx3220_probe(struct i2c_client *client,
551 const struct i2c_device_id *id)
553 struct vpx3220 *decoder;
554 struct v4l2_subdev *sd;
555 const char *name = NULL;
559 /* Check if the adapter supports the needed features */
560 if (!i2c_check_functionality(client->adapter,
561 I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
564 decoder = kzalloc(sizeof(struct vpx3220), GFP_KERNEL);
568 v4l2_i2c_subdev_init(sd, client, &vpx3220_ops);
569 decoder->norm = V4L2_STD_PAL;
572 decoder->bright = 32768;
573 decoder->contrast = 32768;
574 decoder->hue = 32768;
575 decoder->sat = 32768;
577 ver = i2c_smbus_read_byte_data(client, 0x00);
578 pn = (i2c_smbus_read_byte_data(client, 0x02) << 8) +
579 i2c_smbus_read_byte_data(client, 0x01);
580 decoder->ident = V4L2_IDENT_VPX3220A;
588 decoder->ident = V4L2_IDENT_VPX3216B;
592 decoder->ident = V4L2_IDENT_VPX3214C;
597 v4l2_info(sd, "%s found @ 0x%x (%s)\n", name,
598 client->addr << 1, client->adapter->name);
600 v4l2_info(sd, "chip (%02x:%04x) found @ 0x%x (%s)\n",
601 ver, pn, client->addr << 1, client->adapter->name);
603 vpx3220_write_block(sd, init_common, sizeof(init_common));
604 vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
606 vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
610 static int vpx3220_remove(struct i2c_client *client)
612 struct v4l2_subdev *sd = i2c_get_clientdata(client);
614 v4l2_device_unregister_subdev(sd);
615 kfree(to_vpx3220(sd));
619 static const struct i2c_device_id vpx3220_id[] = {
625 MODULE_DEVICE_TABLE(i2c, vpx3220_id);
627 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
629 .driverid = I2C_DRIVERID_VPX3220,
630 .command = vpx3220_command,
631 .probe = vpx3220_probe,
632 .remove = vpx3220_remove,
633 .id_table = vpx3220_id,