media/i2c/bt819.c

29 MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
77 static inline int bt819_write(struct bt819 *decoder, u8 reg, u8 value)
79 	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
81 	decoder->reg[reg] = value;
85 static inline int bt819_setbit(struct bt819 *decoder, u8 reg, u8 bit, u8 value)
87 	return bt819_write(decoder, reg,
88 		(decoder->reg[reg] & ~(1 << bit)) | (value ? (1 << bit) : 0));
91 static int bt819_write_block(struct bt819 *decoder, const u8 *data, unsigned int len)
93 	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
109 				    decoder->reg[reg++] = data[1];
121 			ret = bt819_write(decoder, reg, *data++);
131 static inline int bt819_read(struct bt819 *decoder, u8 reg)
133 	struct i2c_client *client = v4l2_get_subdevdata(&decoder->sd);
174 	struct bt819 *decoder = to_bt819(sd);
175 	struct timing *timing = &timing_data[(decoder->norm & V4L2_STD_525_60) ? 1 : 0];
189 	init[0x15 * 2 - 1] = (decoder->norm & V4L2_STD_625_50) ? 115 : 93;	/* Chroma burst delay */
191 	bt819_write(decoder, 0x1f, 0x00);
195 	return bt819_write_block(decoder, init, sizeof(init));
202 	struct bt819 *decoder = to_bt819(sd);
203 	int status = bt819_read(decoder, 0x00);
237 	struct bt819 *decoder = to_bt819(sd);
247 		bt819_setbit(decoder, 0x01, 0, 1);
248 		bt819_setbit(decoder, 0x01, 1, 0);
249 		bt819_setbit(decoder, 0x01, 5, 0);
250 		bt819_write(decoder, 0x18, 0x68);
251 		bt819_write(decoder, 0x19, 0x5d);
252 		/* bt819_setbit(decoder, 0x1a,  5, 1); */
256 		bt819_setbit(decoder, 0x01, 0, 1);
257 		bt819_setbit(decoder, 0x01, 1, 1);
258 		bt819_setbit(decoder, 0x01, 5, 1);
259 		bt819_write(decoder, 0x18, 0x7f);
260 		bt819_write(decoder, 0x19, 0x72);
261 		/* bt819_setbit(decoder, 0x1a,  5, 0); */
268 	bt819_write(decoder, 0x03,
273 	bt819_write(decoder, 0x04, timing->vdelay & 0xff);
274 	bt819_write(decoder, 0x05, timing->vactive & 0xff);
275 	bt819_write(decoder, 0x06, timing->hdelay & 0xff);
276 	bt819_write(decoder, 0x07, timing->hactive & 0xff);
277 	bt819_write(decoder, 0x08, (timing->hscale >> 8) & 0xff);
278 	bt819_write(decoder, 0x09, timing->hscale & 0xff);
279 	decoder->norm = std;
287 	struct bt819 *decoder = to_bt819(sd);
297 	if (decoder->input != input) {
299 		decoder->input = input;
301 		if (decoder->input == 0) {
302 			bt819_setbit(decoder, 0x0b, 6, 0);
303 			bt819_setbit(decoder, 0x1a, 1, 1);
305 			bt819_setbit(decoder, 0x0b, 6, 1);
306 			bt819_setbit(decoder, 0x1a, 1, 0);
315 	struct bt819 *decoder = to_bt819(sd);
319 	if (decoder->enable != enable) {
320 		decoder->enable = enable;
321 		bt819_setbit(decoder, 0x16, 7, !enable);
329 	struct bt819 *decoder = to_bt819(sd);
334 		bt819_write(decoder, 0x0a, ctrl->val);
338 		bt819_write(decoder, 0x0c, ctrl->val & 0xff);
339 		bt819_setbit(decoder, 0x0b, 2, ((ctrl->val >> 8) & 0x01));
343 		bt819_write(decoder, 0x0d, (ctrl->val >> 7) & 0xff);
344 		bt819_setbit(decoder, 0x0b, 1, ((ctrl->val >> 15) & 0x01));
349 		bt819_write(decoder, 0x0e, (temp >> 7) & 0xff);
350 		bt819_setbit(decoder, 0x0b, 0, (temp >> 15) & 0x01);
354 		bt819_write(decoder, 0x0f, ctrl->val);
386 	struct bt819 *decoder;
394 	decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
395 	if (decoder == NULL)
397 	sd = &decoder->sd;
400 	ver = bt819_read(decoder, 0x17);
420 	decoder->norm = V4L2_STD_NTSC;
421 	decoder->input = 0;
422 	decoder->enable = 1;
428 	v4l2_ctrl_handler_init(&decoder->hdl, 4);
429 	v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
431 	v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
433 	v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
435 	v4l2_ctrl_new_std(&decoder->hdl, &bt819_ctrl_ops,
437 	sd->ctrl_handler = &decoder->hdl;
438 	if (decoder->hdl.error) {
439 		int err = decoder->hdl.error;
441 		v4l2_ctrl_handler_free(&decoder->hdl);
444 	v4l2_ctrl_handler_setup(&decoder->hdl);
451 	struct bt819 *decoder = to_bt819(sd);
454 	v4l2_ctrl_handler_free(&decoder->hdl);