2  * ths8200 - Texas Instruments THS8200 video encoder driver
23 #include <linux/v4l2-dv-timings.h>
25 #include <media/v4l2-dv-timings.h>
26 #include <media/v4l2-async.h>
27 #include <media/v4l2-device.h>
33 MODULE_PARM_DESC(debug, "debug level (0-2)");
93 /* To set specific bits in the register, a clear-mask is given (to be AND-ed),
94  * and then the value-mask (to be OR-ed).
108 	reg->val = ths8200_read(sd, reg->reg & 0xff);  in ths8200_g_register()
109 	reg->size = 1;  in ths8200_g_register()
117 	ths8200_write(sd, reg->reg & 0xff, reg->val & 0xff);  in ths8200_s_register()
128 	v4l2_info(sd, "----- Chip status -----\n");  in ths8200_log_status()
129 	v4l2_info(sd, "version: %u\n", state->chip_version);  in ths8200_log_status()
139 	v4l2_print_dv_timings(sd->name, "Configured format:",  in ths8200_log_status()
140 			      &state->dv_timings, true);  in ths8200_log_status()
151 	state->power_on = on;  in ths8200_s_power()
153 	/* Power up/down - leave in reset state until input video is present */  in ths8200_s_power()
168 /* -----------------------------------------------------------------------------
176 	if (enable && !state->power_on)  in ths8200_s_stream()
195 	 * bypass 422-444 interpolation,  in ths8200_core_init()
217 	uint16_t line_start_active_video = (bt->vsync + bt->vbackporch);  in ths8200_setup()
218 	uint16_t line_start_front_porch  = (vtotal(bt) - bt->vfrontporch);  in ths8200_setup()
225 	ths8200_write(sd, THS8200_DTG1_SPEC_A, bt->hsync);  in ths8200_setup()
226 	ths8200_write(sd, THS8200_DTG1_SPEC_B, bt->hfrontporch);  in ths8200_setup()
229 	if (!bt->interlaced)  in ths8200_setup()
232 	/* Distance from leading edge of h sync to start of active video.  in ths8200_setup()
236 		      (bt->hbackporch + bt->hsync) & 0xff);  in ths8200_setup()
237 	/* Zero for SDTV-mode. MSB in 0x2b */  in ths8200_setup()
244 		      ((bt->hbackporch + bt->hsync) & 0x100) >> 1);  in ths8200_setup()
247 	ths8200_write(sd, THS8200_DTG1_SPEC_K_LSB, (bt->hfrontporch) & 0xff);  in ths8200_setup()
249 		      ((bt->hfrontporch) & 0x700) >> 8);  in ths8200_setup()
271 	if (!bt->interlaced)  in ths8200_setup()
277 	 * that sets all the RGB-outputs to zero is used in the blanking areas,  in ths8200_setup()
278 	 * while a line type that enable the RGB-outputs is used in active video  in ths8200_setup()
279 	 * area. The line numbers for start of active video, start of front  in ths8200_setup()
284 	 * 0x9 - Full normal sync pulse: Blocks data when dtg1_pass is off.  in ths8200_setup()
286 	 * 0x0 - Active video: Video data is always passed. Used in active  in ths8200_setup()
301 	/* h sync width transmitted */  in ths8200_setup()
302 	ths8200_write(sd, THS8200_DTG2_HLENGTH_LSB, bt->hsync & 0xff);  in ths8200_setup()
304 			     (bt->hsync >> 2) & 0xc0);  in ths8200_setup()
306 	/* The pixel value h sync is asserted on */  in ths8200_setup()
311 	/* v sync width transmitted (must add 1 to get correct output) */  in ths8200_setup()
312 	ths8200_write(sd, THS8200_DTG2_VLENGTH1_LSB, (bt->vsync + 1) & 0xff);  in ths8200_setup()
314 			     ((bt->vsync + 1) >> 2) & 0xc0);  in ths8200_setup()
316 	/* The pixel value v sync is asserted on (must add 1 to get correct output) */  in ths8200_setup()
328 	/* Internal delay factors to synchronize the sync pulses and the data */  in ths8200_setup()
335 	/* Polarity of received and transmitted sync signals */  in ths8200_setup()
336 	if (bt->polarities & V4L2_DV_HSYNC_POS_POL) {  in ths8200_setup()
340 	if (bt->polarities & V4L2_DV_VSYNC_POS_POL) {  in ths8200_setup()
355 		 "horizontal: front porch %d, back porch %d, sync %d\n"  in ths8200_setup()
356 		 "vertical: sync %d\n", __func__, htotal(bt), vtotal(bt),  in ths8200_setup()
357 		 polarity, bt->hfrontporch, bt->hbackporch,  in ths8200_setup()
358 		 bt->hsync, bt->vsync);  in ths8200_setup()
369 		return -EINVAL;  in ths8200_s_dv_timings()
373 		return -EINVAL;  in ths8200_s_dv_timings()
378 		return -EINVAL;  in ths8200_s_dv_timings()
381 	timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS;  in ths8200_s_dv_timings()
384 	state->dv_timings = *timings;  in ths8200_s_dv_timings()
386 	ths8200_setup(sd, &timings->bt);  in ths8200_s_dv_timings()
399 		return -EINVAL;  in ths8200_g_dv_timings()
401 	*timings = state->dv_timings;  in ths8200_g_dv_timings()
409 	if (timings->pad != 0)  in ths8200_enum_dv_timings()
410 		return -EINVAL;  in ths8200_enum_dv_timings()
419 	if (cap->pad != 0)  in ths8200_dv_timings_cap()
420 		return -EINVAL;  in ths8200_dv_timings_cap()
452 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))  in ths8200_probe()
453 		return -EIO;  in ths8200_probe()
455 	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);  in ths8200_probe()
457 		return -ENOMEM;  in ths8200_probe()
459 	sd = &state->sd;  in ths8200_probe()
462 	state->chip_version = ths8200_read(sd, THS8200_VERSION);  in ths8200_probe()
463 	v4l2_dbg(1, debug, sd, "chip version 0x%x\n", state->chip_version);  in ths8200_probe()
467 	error = v4l2_async_register_subdev(&state->sd);  in ths8200_probe()
471 	v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,  in ths8200_probe()
472 		  client->addr << 1, client->adapter->name);  in ths8200_probe()
482 	v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name,  in ths8200_remove()
483 		 client->addr << 1, client->adapter->name);  in ths8200_remove()
486 	v4l2_async_unregister_subdev(&decoder->sd);  in ths8200_remove()