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)");
41 	struct v4l2_subdev sd;  member
56 static inline struct ths8200_state *to_state(struct v4l2_subdev *sd)  in to_state()  argument
58 	return container_of(sd, struct ths8200_state, sd);  in to_state()
71 static int ths8200_read(struct v4l2_subdev *sd, u8 reg)  in ths8200_read()  argument
73 	struct i2c_client *client = v4l2_get_subdevdata(sd);  in ths8200_read()
78 static int ths8200_write(struct v4l2_subdev *sd, u8 reg, u8 val)  in ths8200_write()  argument
80 	struct i2c_client *client = v4l2_get_subdevdata(sd);  in ths8200_write()
89 	v4l2_err(sd, "I2C Write Problem\n");  in ths8200_write()
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).
97 ths8200_write_and_or(struct v4l2_subdev *sd, u8 reg,  in ths8200_write_and_or()  argument
100 	ths8200_write(sd, reg, (ths8200_read(sd, reg) & clr_mask) | val_mask);  in ths8200_write_and_or()
105 static int ths8200_g_register(struct v4l2_subdev *sd,  in ths8200_g_register()  argument
108 	reg->val = ths8200_read(sd, reg->reg & 0xff);  in ths8200_g_register()
109 	reg->size = 1;  in ths8200_g_register()
114 static int ths8200_s_register(struct v4l2_subdev *sd,  in ths8200_s_register()  argument
117 	ths8200_write(sd, reg->reg & 0xff, reg->val & 0xff);  in ths8200_s_register()
123 static int ths8200_log_status(struct v4l2_subdev *sd)  in ths8200_log_status()  argument
125 	struct ths8200_state *state = to_state(sd);  in ths8200_log_status()
126 	uint8_t reg_03 = ths8200_read(sd, THS8200_CHIP_CTL);  in ths8200_log_status()
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()
130 	v4l2_info(sd, "power: %s\n", (reg_03 & 0x0c) ? "off" : "on");  in ths8200_log_status()
131 	v4l2_info(sd, "reset: %s\n", (reg_03 & 0x01) ? "off" : "on");  in ths8200_log_status()
132 	v4l2_info(sd, "test pattern: %s\n",  in ths8200_log_status()
134 	v4l2_info(sd, "format: %ux%u\n",  in ths8200_log_status()
135 		  ths8200_read(sd, THS8200_DTG2_PIXEL_CNT_MSB) * 256 +  in ths8200_log_status()
136 		  ths8200_read(sd, THS8200_DTG2_PIXEL_CNT_LSB),  in ths8200_log_status()
137 		  (ths8200_read(sd, THS8200_DTG2_LINE_CNT_MSB) & 0x07) * 256 +  in ths8200_log_status()
138 		  ths8200_read(sd, THS8200_DTG2_LINE_CNT_LSB));  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()
145 static int ths8200_s_power(struct v4l2_subdev *sd, int on)  in ths8200_s_power()  argument
147 	struct ths8200_state *state = to_state(sd);  in ths8200_s_power()
149 	v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off");  in ths8200_s_power()
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()
154 	ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0xf2, (on ? 0x00 : 0x0c));  in ths8200_s_power()
168 /* -----------------------------------------------------------------------------
172 static int ths8200_s_stream(struct v4l2_subdev *sd, int enable)  in ths8200_s_stream()  argument
174 	struct ths8200_state *state = to_state(sd);  in ths8200_s_stream()
176 	if (enable && !state->power_on)  in ths8200_s_stream()
177 		ths8200_s_power(sd, true);  in ths8200_s_stream()
179 	ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0xfe,  in ths8200_s_stream()
182 	v4l2_dbg(1, debug, sd, "%s: %sable\n",  in ths8200_s_stream()
188 static void ths8200_core_init(struct v4l2_subdev *sd)  in ths8200_core_init()  argument
191 	ths8200_write_and_or(sd, THS8200_CHIP_CTL, 0x3f, 0xc0);  in ths8200_core_init()
195 	 * bypass 422-444 interpolation,  in ths8200_core_init()
198 	ths8200_write(sd, THS8200_DATA_CNTL, 0x70);  in ths8200_core_init()
203 	ths8200_write(sd, THS8200_DTG1_MODE, 0x87);  in ths8200_core_init()
205 	/**** Display Timing Generator Control, Part 1 (DTG1). ****/  in ths8200_core_init()
210 	ths8200_write(sd, THS8200_DTG1_Y_SYNC_MSB, 0x00);  in ths8200_core_init()
211 	ths8200_write(sd, THS8200_DTG1_CBCR_SYNC_MSB, 0x00);  in ths8200_core_init()
214 static void ths8200_setup(struct v4l2_subdev *sd, struct v4l2_bt_timings *bt)  in ths8200_setup()  argument
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()
222 	ths8200_s_stream(sd, false);  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()
230 		ths8200_write(sd, THS8200_DTG1_SPEC_C, 0x00);  in ths8200_setup()
235 	ths8200_write(sd, THS8200_DTG1_SPEC_D_LSB,  in ths8200_setup()
236 		      (bt->hbackporch + bt->hsync) & 0xff);  in ths8200_setup()
237 	/* Zero for SDTV-mode. MSB in 0x2b */  in ths8200_setup()
238 	ths8200_write(sd, THS8200_DTG1_SPEC_E_LSB, 0x00);  in ths8200_setup()
243 	ths8200_write(sd, THS8200_DTG1_SPEC_DEH_MSB,  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()
248 	ths8200_write(sd, THS8200_DTG1_SPEC_K_MSB,  in ths8200_setup()
249 		      ((bt->hfrontporch) & 0x700) >> 8);  in ths8200_setup()
252 	ths8200_write(sd, THS8200_DTG1_SPEC_G_LSB, (htotal(bt)/2) & 0xff);  in ths8200_setup()
253 	ths8200_write(sd, THS8200_DTG1_SPEC_G_MSB,  in ths8200_setup()
257 	ths8200_write(sd, THS8200_DTG1_TOT_PIXELS_MSB, htotal(bt) >> 8);  in ths8200_setup()
258 	ths8200_write(sd, THS8200_DTG1_TOT_PIXELS_LSB, htotal(bt) & 0xff);  in ths8200_setup()
264 	ths8200_write(sd, THS8200_DTG1_FRAME_FIELD_SZ_MSB,  in ths8200_setup()
266 	ths8200_write(sd, THS8200_DTG1_FRAME_SZ_LSB, vtotal(bt) & 0xff);  in ths8200_setup()
271 	if (!bt->interlaced)  in ths8200_setup()
272 		ths8200_write(sd, THS8200_DTG1_FIELD_SZ_LSB, 0xff);  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()
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()
289 	ths8200_write_and_or(sd, THS8200_DTG2_BP1_2_MSB, 0x88,  in ths8200_setup()
292 	ths8200_write(sd, THS8200_DTG2_BP3_4_MSB, ((vtotal(bt)) >> 4) & 0x70);  in ths8200_setup()
293 	ths8200_write(sd, THS8200_DTG2_BP1_LSB, line_start_active_video & 0xff);  in ths8200_setup()
294 	ths8200_write(sd, THS8200_DTG2_BP2_LSB, line_start_front_porch & 0xff);  in ths8200_setup()
295 	ths8200_write(sd, THS8200_DTG2_BP3_LSB, (vtotal(bt)) & 0xff);  in ths8200_setup()
298 	ths8200_write(sd, THS8200_DTG2_LINETYPE1, 0x90);  in ths8200_setup()
299 	ths8200_write(sd, THS8200_DTG2_LINETYPE2, 0x90);  in ths8200_setup()
302 	ths8200_write(sd, THS8200_DTG2_HLENGTH_LSB, bt->hsync & 0xff);  in ths8200_setup()
303 	ths8200_write_and_or(sd, THS8200_DTG2_HLENGTH_LSB_HDLY_MSB, 0x3f,  in ths8200_setup()
304 			     (bt->hsync >> 2) & 0xc0);  in ths8200_setup()
307 	ths8200_write_and_or(sd, THS8200_DTG2_HLENGTH_LSB_HDLY_MSB, 0xe0,  in ths8200_setup()
309 	ths8200_write(sd, THS8200_DTG2_HLENGTH_HDLY_LSB, htotal(bt));  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()
313 	ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0x3f,  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()
317 	ths8200_write_and_or(sd, THS8200_DTG2_VLENGTH1_MSB_VDLY1_MSB, 0xf8,  in ths8200_setup()
318 			     ((vtotal(bt) + 1) >> 8) & 0x7);  in ths8200_setup()
319 	ths8200_write(sd, THS8200_DTG2_VDLY1_LSB, vtotal(bt) + 1);  in ths8200_setup()
322 	 * be set to all 1.  in ths8200_setup()
324 	ths8200_write(sd, THS8200_DTG2_VLENGTH2_LSB, 0x00);  in ths8200_setup()
325 	ths8200_write(sd, THS8200_DTG2_VLENGTH2_MSB_VDLY2_MSB, 0x07);  in ths8200_setup()
326 	ths8200_write(sd, THS8200_DTG2_VDLY2_LSB, 0xff);  in ths8200_setup()
330 	ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_MSB, 0);  in ths8200_setup()
331 	ths8200_write(sd, THS8200_DTG2_HS_IN_DLY_LSB, 0);  in ths8200_setup()
332 	ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_MSB, 0);  in ths8200_setup()
333 	ths8200_write(sd, THS8200_DTG2_VS_IN_DLY_LSB, 0);  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()
349 	ths8200_write(sd, THS8200_DTG2_CNTL, 0x44 | polarity);  in ths8200_setup()
352 	ths8200_s_stream(sd, true);  in ths8200_setup()
354 	v4l2_dbg(1, debug, sd, "%s: frame %dx%d, polarity %d\n"  in ths8200_setup()
357 		 polarity, bt->hfrontporch, bt->hbackporch,  in ths8200_setup()
358 		 bt->hsync, bt->vsync);  in ths8200_setup()
361 static int ths8200_s_dv_timings(struct v4l2_subdev *sd, unsigned int pad,  in ths8200_s_dv_timings()  argument
364 	struct ths8200_state *state = to_state(sd);  in ths8200_s_dv_timings()
366 	v4l2_dbg(1, debug, sd, "%s:\n", __func__);  in ths8200_s_dv_timings()
369 		return -EINVAL;  in ths8200_s_dv_timings()
373 		return -EINVAL;  in ths8200_s_dv_timings()
377 		v4l2_dbg(1, debug, sd, "Unsupported format\n");  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()
391 static int ths8200_g_dv_timings(struct v4l2_subdev *sd, unsigned int pad,  in ths8200_g_dv_timings()  argument
394 	struct ths8200_state *state = to_state(sd);  in ths8200_g_dv_timings()
396 	v4l2_dbg(1, debug, sd, "%s:\n", __func__);  in ths8200_g_dv_timings()
399 		return -EINVAL;  in ths8200_g_dv_timings()
401 	*timings = state->dv_timings;  in ths8200_g_dv_timings()
406 static int ths8200_enum_dv_timings(struct v4l2_subdev *sd,  in ths8200_enum_dv_timings()  argument
409 	if (timings->pad != 0)  in ths8200_enum_dv_timings()
410 		return -EINVAL;  in ths8200_enum_dv_timings()
416 static int ths8200_dv_timings_cap(struct v4l2_subdev *sd,  in ths8200_dv_timings_cap()  argument
419 	if (cap->pad != 0)  in ths8200_dv_timings_cap()
420 		return -EINVAL;  in ths8200_dv_timings_cap()
448 	struct v4l2_subdev *sd;  in ths8200_probe()  local
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()
460 	v4l2_i2c_subdev_init(sd, client, &ths8200_ops);  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()
465 	ths8200_core_init(sd);  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()
479 	struct v4l2_subdev *sd = i2c_get_clientdata(client);  in ths8200_remove()  local
480 	struct ths8200_state *decoder = to_state(sd);  in ths8200_remove()
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()
485 	ths8200_s_power(sd, false);  in ths8200_remove()
486 	v4l2_async_unregister_subdev(&decoder->sd);  in ths8200_remove()