1 // SPDX-License-Identifier: GPL-2.0-or-later
5  * Copyright (C) 2015-2016 Nexvision
6  * Author: Charles-Antoine Couret <charles-antoine.couret@nexvision.fr>
19 #include <media/v4l2-common.h>
20 #include <media/v4l2-ctrls.h>
21 #include <media/v4l2-device.h>
22 #include <media/v4l2-subdev.h>
23 #include <media/v4l2-dv-timings.h>
24 #include <linux/v4l2-dv-timings.h>
50 	int enabled;  member
214 	ret = gs_read_register(spi, reg->reg & 0xFFFF, &val);  in gs_g_register()
215 	reg->val = val;  in gs_g_register()
216 	reg->size = 2;  in gs_g_register()
225 	return gs_write_register(spi, reg->reg & 0xFFFF, reg->val & 0xFFFF);  in gs_s_register()
241 	return -ERANGE;  in gs_status_format()
270 		return -EINVAL;  in gs_s_dv_timings()
272 	gs->current_timings = *timings;  in gs_s_dv_timings()
281 	*timings = gs->current_timings;  in gs_g_dv_timings()
293 	if (gs->enabled)  in gs_query_dv_timings()
294 		return -EBUSY;  in gs_query_dv_timings()
301 		gs_read_register(gs->pdev, REG_LINES_PER_FRAME + i, &reg_value);  in gs_query_dv_timings()
308 		return -ENOLINK;  in gs_query_dv_timings()
310 	gs_read_register(gs->pdev, REG_STATUS, &reg_value);  in gs_query_dv_timings()
312 		return -ENOLCK;  in gs_query_dv_timings()
314 		return -ERANGE;  in gs_query_dv_timings()
328 	if (timings->index >= ARRAY_SIZE(fmt_cap))  in gs_enum_dv_timings()
329 		return -EINVAL;  in gs_enum_dv_timings()
331 	if (timings->pad != 0)  in gs_enum_dv_timings()
332 		return -EINVAL;  in gs_enum_dv_timings()
334 	timings->timings = fmt_cap[timings->index];  in gs_enum_dv_timings()
343 	if (gs->enabled == enable)  in gs_s_stream()
346 	gs->enabled = enable;  in gs_s_stream()
350 		reg_value = get_register_timings(&gs->current_timings);  in gs_s_stream()
351 		return gs_write_register(gs->pdev, REG_FORCE_FMT, reg_value);  in gs_s_stream()
354 	/* To renable auto-detection mode */  in gs_s_stream()
355 	return gs_write_register(gs->pdev, REG_FORCE_FMT, 0x0);  in gs_s_stream()
369 		ret = gs_read_register(gs->pdev,  in gs_g_input_status()
383 	ret = gs_read_register(gs->pdev, REG_STATUS, &reg_value);  in gs_g_input_status()
397 	if (cap->pad != 0)  in gs_dv_timings_cap()
398 		return -EINVAL;  in gs_dv_timings_cap()
438 	gs = devm_kzalloc(&spi->dev, sizeof(struct gs), GFP_KERNEL);  in gs_probe()
440 		return -ENOMEM;  in gs_probe()
442 	gs->pdev = spi;  in gs_probe()
443 	sd = &gs->sd;  in gs_probe()
445 	spi->mode = SPI_MODE_0;  in gs_probe()
446 	spi->irq = -1;  in gs_probe()
447 	spi->max_speed_hz = 10000000;  in gs_probe()
448 	spi->bits_per_word = 16;  in gs_probe()
452 	gs->current_timings = reg_fmt[0].format;  in gs_probe()
453 	gs->enabled = 0;  in gs_probe()
481 MODULE_AUTHOR("Charles-Antoine Couret <charles-antoine.couret@nexvision.fr>");
482 MODULE_DESCRIPTION("Gennum GS1662 HD/SD-SDI Serializer driver");