[deliverable/linux.git] / drivers / media / platform / vsp1 / vsp1_sru.c

/*
 * vsp1_sru.c  --  R-Car VSP1 Super Resolution Unit
 *
 * Copyright (C) 2013 Renesas Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/device.h>
#include <linux/gfp.h>

#include <media/v4l2-subdev.h>

#include "vsp1.h"
#include "vsp1_sru.h"

#define SRU_MIN_SIZE				4U
#define SRU_MAX_SIZE				8190U

/* -----------------------------------------------------------------------------
 * Device Access
 */

static inline u32 vsp1_sru_read(struct vsp1_sru *sru, u32 reg)
{
	return vsp1_read(sru->entity.vsp1, reg);
}

static inline void vsp1_sru_write(struct vsp1_sru *sru, u32 reg, u32 data)
{
	vsp1_write(sru->entity.vsp1, reg, data);
}

/* -----------------------------------------------------------------------------
 * Controls
 */

#define V4L2_CID_VSP1_SRU_INTENSITY		(V4L2_CID_USER_BASE + 1)

static int sru_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct vsp1_sru *sru =
		container_of(ctrl->handler, struct vsp1_sru, ctrls);

	switch (ctrl->id) {
	case V4L2_CID_VSP1_SRU_INTENSITY:
		sru->intensity = ctrl->val;
		break;
	}

	return 0;
}

static const struct v4l2_ctrl_ops sru_ctrl_ops = {
	.s_ctrl = sru_s_ctrl,
};

static const struct v4l2_ctrl_config sru_intensity_control = {
	.ops = &sru_ctrl_ops,
	.id = V4L2_CID_VSP1_SRU_INTENSITY,
	.name = "Intensity",
	.type = V4L2_CTRL_TYPE_INTEGER,
	.min = 1,
	.max = 6,
	.def = 1,
	.step = 1,
};

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Core Operations
 */

struct vsp1_sru_param {
	u32 ctrl0;
	u32 ctrl2;
};

#define VI6_SRU_CTRL0_PARAMS(p0, p1)			\
	(((p0) << VI6_SRU_CTRL0_PARAM0_SHIFT) |		\
	 ((p1) << VI6_SRU_CTRL0_PARAM1_SHIFT))

#define VI6_SRU_CTRL2_PARAMS(p6, p7, p8)		\
	(((p6) << VI6_SRU_CTRL2_PARAM6_SHIFT) |		\
	 ((p7) << VI6_SRU_CTRL2_PARAM7_SHIFT) |		\
	 ((p8) << VI6_SRU_CTRL2_PARAM8_SHIFT))

static const struct vsp1_sru_param vsp1_sru_params[] = {
	{
		.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) | VI6_SRU_CTRL0_EN,
		.ctrl2 = VI6_SRU_CTRL2_PARAMS(24, 40, 255),
	}, {
		.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) | VI6_SRU_CTRL0_EN,
		.ctrl2 = VI6_SRU_CTRL2_PARAMS(8, 16, 255),
	}, {
		.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) | VI6_SRU_CTRL0_EN,
		.ctrl2 = VI6_SRU_CTRL2_PARAMS(36, 60, 255),
	}, {
		.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) | VI6_SRU_CTRL0_EN,
		.ctrl2 = VI6_SRU_CTRL2_PARAMS(12, 27, 255),
	}, {
		.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) | VI6_SRU_CTRL0_EN,
		.ctrl2 = VI6_SRU_CTRL2_PARAMS(48, 80, 255),
	}, {
		.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) | VI6_SRU_CTRL0_EN,
		.ctrl2 = VI6_SRU_CTRL2_PARAMS(16, 36, 255),
	},
};

static int sru_s_stream(struct v4l2_subdev *subdev, int enable)
{
	struct vsp1_sru *sru = to_sru(subdev);
	const struct vsp1_sru_param *param;
	struct v4l2_mbus_framefmt *input;
	struct v4l2_mbus_framefmt *output;
	bool upscale;
	u32 ctrl0;

	if (!enable)
		return 0;

	input = &sru->entity.formats[SRU_PAD_SINK];
	output = &sru->entity.formats[SRU_PAD_SOURCE];
	upscale = input->width != output->width;
	param = &vsp1_sru_params[sru->intensity];

	if (input->code == V4L2_MBUS_FMT_ARGB8888_1X32)
		ctrl0 = VI6_SRU_CTRL0_PARAM2 | VI6_SRU_CTRL0_PARAM3
		      | VI6_SRU_CTRL0_PARAM4;
	else
		ctrl0 = VI6_SRU_CTRL0_PARAM3;

	vsp1_sru_write(sru, VI6_SRU_CTRL0, param->ctrl0 | ctrl0 |
		       (upscale ? VI6_SRU_CTRL0_MODE_UPSCALE : 0));
	vsp1_sru_write(sru, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);
	vsp1_sru_write(sru, VI6_SRU_CTRL2, param->ctrl2);

	return 0;
}

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Pad Operations
 */

static int sru_enum_mbus_code(struct v4l2_subdev *subdev,
			      struct v4l2_subdev_fh *fh,
			      struct v4l2_subdev_mbus_code_enum *code)
{
	static const unsigned int codes[] = {
		V4L2_MBUS_FMT_ARGB8888_1X32,
		V4L2_MBUS_FMT_AYUV8_1X32,
	};
	struct v4l2_mbus_framefmt *format;

	if (code->pad == SRU_PAD_SINK) {
		if (code->index >= ARRAY_SIZE(codes))
			return -EINVAL;

		code->code = codes[code->index];
	} else {
		/* The SRU can't perform format conversion, the sink format is
		 * always identical to the source format.
		 */
		if (code->index)
			return -EINVAL;

		format = v4l2_subdev_get_try_format(fh, SRU_PAD_SINK);
		code->code = format->code;
	}

	return 0;
}

static int sru_enum_frame_size(struct v4l2_subdev *subdev,
			       struct v4l2_subdev_fh *fh,
			       struct v4l2_subdev_frame_size_enum *fse)
{
	struct v4l2_mbus_framefmt *format;

	format = v4l2_subdev_get_try_format(fh, SRU_PAD_SINK);

	if (fse->index || fse->code != format->code)
		return -EINVAL;

	if (fse->pad == SRU_PAD_SINK) {
		fse->min_width = SRU_MIN_SIZE;
		fse->max_width = SRU_MAX_SIZE;
		fse->min_height = SRU_MIN_SIZE;
		fse->max_height = SRU_MAX_SIZE;
	} else {
		fse->min_width = format->width;
		fse->min_height = format->height;
		if (format->width <= SRU_MAX_SIZE / 2 &&
		    format->height <= SRU_MAX_SIZE / 2) {
			fse->max_width = format->width * 2;
			fse->max_height = format->height * 2;
		} else {
			fse->max_width = format->width;
			fse->max_height = format->height;
		}
	}

	return 0;
}

static int sru_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
			  struct v4l2_subdev_format *fmt)
{
	struct vsp1_sru *sru = to_sru(subdev);

	fmt->format = *vsp1_entity_get_pad_format(&sru->entity, fh, fmt->pad,
						  fmt->which);

	return 0;
}

static void sru_try_format(struct vsp1_sru *sru, struct v4l2_subdev_fh *fh,
			   unsigned int pad, struct v4l2_mbus_framefmt *fmt,
			   enum v4l2_subdev_format_whence which)
{
	struct v4l2_mbus_framefmt *format;
	unsigned int input_area;
	unsigned int output_area;

	switch (pad) {
	case SRU_PAD_SINK:
		/* Default to YUV if the requested format is not supported. */
		if (fmt->code != V4L2_MBUS_FMT_ARGB8888_1X32 &&
		    fmt->code != V4L2_MBUS_FMT_AYUV8_1X32)
			fmt->code = V4L2_MBUS_FMT_AYUV8_1X32;

		fmt->width = clamp(fmt->width, SRU_MIN_SIZE, SRU_MAX_SIZE);
		fmt->height = clamp(fmt->height, SRU_MIN_SIZE, SRU_MAX_SIZE);
		break;

	case SRU_PAD_SOURCE:
		/* The SRU can't perform format conversion. */
		format = vsp1_entity_get_pad_format(&sru->entity, fh,
						    SRU_PAD_SINK, which);
		fmt->code = format->code;

		/* We can upscale by 2 in both direction, but not independently.
		 * Compare the input and output rectangles areas (avoiding
		 * integer overflows on the output): if the requested output
		 * area is larger than 1.5^2 the input area upscale by two,
		 * otherwise don't scale.
		 */
		input_area = format->width * format->height;
		output_area = min(fmt->width, SRU_MAX_SIZE)
			    * min(fmt->height, SRU_MAX_SIZE);

		if (fmt->width <= SRU_MAX_SIZE / 2 &&
		    fmt->height <= SRU_MAX_SIZE / 2 &&
		    output_area > input_area * 9 / 4) {
			fmt->width = format->width * 2;
			fmt->height = format->height * 2;
		} else {
			fmt->width = format->width;
			fmt->height = format->height;
		}
		break;
	}

	fmt->field = V4L2_FIELD_NONE;
	fmt->colorspace = V4L2_COLORSPACE_SRGB;
}

static int sru_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh,
			  struct v4l2_subdev_format *fmt)
{
	struct vsp1_sru *sru = to_sru(subdev);
	struct v4l2_mbus_framefmt *format;

	sru_try_format(sru, fh, fmt->pad, &fmt->format, fmt->which);

	format = vsp1_entity_get_pad_format(&sru->entity, fh, fmt->pad,
					    fmt->which);
	*format = fmt->format;

	if (fmt->pad == SRU_PAD_SINK) {
		/* Propagate the format to the source pad. */
		format = vsp1_entity_get_pad_format(&sru->entity, fh,
						    SRU_PAD_SOURCE, fmt->which);
		*format = fmt->format;

		sru_try_format(sru, fh, SRU_PAD_SOURCE, format, fmt->which);
	}

	return 0;
}

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Operations
 */

static struct v4l2_subdev_video_ops sru_video_ops = {
	.s_stream = sru_s_stream,
};

static struct v4l2_subdev_pad_ops sru_pad_ops = {
	.enum_mbus_code = sru_enum_mbus_code,
	.enum_frame_size = sru_enum_frame_size,
	.get_fmt = sru_get_format,
	.set_fmt = sru_set_format,
};

static struct v4l2_subdev_ops sru_ops = {
	.video	= &sru_video_ops,
	.pad    = &sru_pad_ops,
};

/* -----------------------------------------------------------------------------
 * Initialization and Cleanup
 */

struct vsp1_sru *vsp1_sru_create(struct vsp1_device *vsp1)
{
	struct v4l2_subdev *subdev;
	struct vsp1_sru *sru;
	int ret;

	sru = devm_kzalloc(vsp1->dev, sizeof(*sru), GFP_KERNEL);
	if (sru == NULL)
		return ERR_PTR(-ENOMEM);

	sru->entity.type = VSP1_ENTITY_SRU;

	ret = vsp1_entity_init(vsp1, &sru->entity, 2);
	if (ret < 0)
		return ERR_PTR(ret);

	/* Initialize the V4L2 subdev. */
	subdev = &sru->entity.subdev;
	v4l2_subdev_init(subdev, &sru_ops);

	subdev->entity.ops = &vsp1_media_ops;
	subdev->internal_ops = &vsp1_subdev_internal_ops;
	snprintf(subdev->name, sizeof(subdev->name), "%s sru",
		 dev_name(vsp1->dev));
	v4l2_set_subdevdata(subdev, sru);
	subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;

	vsp1_entity_init_formats(subdev, NULL);

	/* Initialize the control handler. */
	v4l2_ctrl_handler_init(&sru->ctrls, 1);
	v4l2_ctrl_new_custom(&sru->ctrls, &sru_intensity_control, NULL);

	sru->entity.subdev.ctrl_handler = &sru->ctrls;

	if (sru->ctrls.error) {
		dev_err(vsp1->dev, "sru: failed to initialize controls\n");
		ret = sru->ctrls.error;
		vsp1_entity_destroy(&sru->entity);
		return ERR_PTR(ret);
	}

	v4l2_ctrl_handler_setup(&sru->ctrls);

	return sru;
}
Commit	Line	Data
a626e64e LP	1	/*
	2	* vsp1_sru.c -- R-Car VSP1 Super Resolution Unit
	3	*
	4	* Copyright (C) 2013 Renesas Corporation
	5	*
	6	* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*/
	13
	14	#include <linux/device.h>
	15	#include <linux/gfp.h>
	16
	17	#include <media/v4l2-subdev.h>
	18
	19	#include "vsp1.h"
	20	#include "vsp1_sru.h"
	21
	22	#define SRU_MIN_SIZE 4U
	23	#define SRU_MAX_SIZE 8190U
	24
	25	/* -----------------------------------------------------------------------------
	26	* Device Access
	27	*/
	28
	29	static inline u32 vsp1_sru_read(struct vsp1_sru *sru, u32 reg)
	30	{
	31	return vsp1_read(sru->entity.vsp1, reg);
	32	}
	33
	34	static inline void vsp1_sru_write(struct vsp1_sru *sru, u32 reg, u32 data)
	35	{
	36	vsp1_write(sru->entity.vsp1, reg, data);
	37	}
	38
	39	/* -----------------------------------------------------------------------------
	40	* Controls
	41	*/
	42
	43	#define V4L2_CID_VSP1_SRU_INTENSITY (V4L2_CID_USER_BASE + 1)
	44
	45	static int sru_s_ctrl(struct v4l2_ctrl *ctrl)
	46	{
	47	struct vsp1_sru *sru =
	48	container_of(ctrl->handler, struct vsp1_sru, ctrls);
	49
	50	switch (ctrl->id) {
	51	case V4L2_CID_VSP1_SRU_INTENSITY:
	52	sru->intensity = ctrl->val;
	53	break;
	54	}
	55
	56	return 0;
	57	}
	58
	59	static const struct v4l2_ctrl_ops sru_ctrl_ops = {
	60	.s_ctrl = sru_s_ctrl,
	61	};
	62
	63	static const struct v4l2_ctrl_config sru_intensity_control = {
	64	.ops = &sru_ctrl_ops,
65	.id = V4L2_CID_VSP1_SRU_INTENSITY,
66	.name = "Intensity",
67	.type = V4L2_CTRL_TYPE_INTEGER,
68	.min = 1,
69	.max = 6,
a1606102	70	.def = 1,
a626e64e LP	71	.step = 1,
	72	};
	73
	74	/* -----------------------------------------------------------------------------
	75	* V4L2 Subdevice Core Operations
	76	*/
	77
	78	struct vsp1_sru_param {
	79	u32 ctrl0;
	80	u32 ctrl2;
	81	};
	82
	83	#define VI6_SRU_CTRL0_PARAMS(p0, p1) \
	84	(((p0) << VI6_SRU_CTRL0_PARAM0_SHIFT) \| \
	85	((p1) << VI6_SRU_CTRL0_PARAM1_SHIFT))
	86
	87	#define VI6_SRU_CTRL2_PARAMS(p6, p7, p8) \
	88	(((p6) << VI6_SRU_CTRL2_PARAM6_SHIFT) \| \
	89	((p7) << VI6_SRU_CTRL2_PARAM7_SHIFT) \| \
	90	((p8) << VI6_SRU_CTRL2_PARAM8_SHIFT))
	91
	92	static const struct vsp1_sru_param vsp1_sru_params[] = {
	93	{
	94	.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) \| VI6_SRU_CTRL0_EN,
	95	.ctrl2 = VI6_SRU_CTRL2_PARAMS(24, 40, 255),
	96	}, {
	97	.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) \| VI6_SRU_CTRL0_EN,
	98	.ctrl2 = VI6_SRU_CTRL2_PARAMS(8, 16, 255),
	99	}, {
	100	.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) \| VI6_SRU_CTRL0_EN,
	101	.ctrl2 = VI6_SRU_CTRL2_PARAMS(36, 60, 255),
	102	}, {
	103	.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) \| VI6_SRU_CTRL0_EN,
	104	.ctrl2 = VI6_SRU_CTRL2_PARAMS(12, 27, 255),
	105	}, {
	106	.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) \| VI6_SRU_CTRL0_EN,
	107	.ctrl2 = VI6_SRU_CTRL2_PARAMS(48, 80, 255),
	108	}, {
	109	.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) \| VI6_SRU_CTRL0_EN,
	110	.ctrl2 = VI6_SRU_CTRL2_PARAMS(16, 36, 255),
	111	},
	112	};
	113
	114	static int sru_s_stream(struct v4l2_subdev *subdev, int enable)
	115	{
	116	struct vsp1_sru *sru = to_sru(subdev);
	117	const struct vsp1_sru_param *param;
	118	struct v4l2_mbus_framefmt *input;
	119	struct v4l2_mbus_framefmt *output;
	120	bool upscale;
	121	u32 ctrl0;
	122
	123	if (!enable)
	124	return 0;
	125
	126	input = &sru->entity.formats[SRU_PAD_SINK];
	127	output = &sru->entity.formats[SRU_PAD_SOURCE];
	128	upscale = input->width != output->width;
	129	param = &vsp1_sru_params[sru->intensity];
	130
	131	if (input->code == V4L2_MBUS_FMT_ARGB8888_1X32)
	132	ctrl0 = VI6_SRU_CTRL0_PARAM2 \| VI6_SRU_CTRL0_PARAM3
	133	\| VI6_SRU_CTRL0_PARAM4;
	134	else
135	ctrl0 = VI6_SRU_CTRL0_PARAM3;
136
137	vsp1_sru_write(sru, VI6_SRU_CTRL0, param->ctrl0 \| ctrl0 \|
138	(upscale ? VI6_SRU_CTRL0_MODE_UPSCALE : 0));
139	vsp1_sru_write(sru, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);
140	vsp1_sru_write(sru, VI6_SRU_CTRL2, param->ctrl2);
141
142	return 0;
143	}
144
145	/* -----------------------------------------------------------------------------
146	* V4L2 Subdevice Pad Operations
147	*/
148
149	static int sru_enum_mbus_code(struct v4l2_subdev *subdev,
150	struct v4l2_subdev_fh *fh,
151	struct v4l2_subdev_mbus_code_enum *code)
152	{
153	static const unsigned int codes[] = {
154	V4L2_MBUS_FMT_ARGB8888_1X32,
155	V4L2_MBUS_FMT_AYUV8_1X32,
156	};
157	struct v4l2_mbus_framefmt *format;
158
159	if (code->pad == SRU_PAD_SINK) {
160	if (code->index >= ARRAY_SIZE(codes))
161	return -EINVAL;
162
163	code->code = codes[code->index];
164	} else {
165	/* The SRU can't perform format conversion, the sink format is
166	* always identical to the source format.
167	*/
168	if (code->index)
169	return -EINVAL;
170
171	format = v4l2_subdev_get_try_format(fh, SRU_PAD_SINK);
172	code->code = format->code;
173	}
174
175	return 0;
176	}
177
178	static int sru_enum_frame_size(struct v4l2_subdev *subdev,
179	struct v4l2_subdev_fh *fh,
180	struct v4l2_subdev_frame_size_enum *fse)
181	{
182	struct v4l2_mbus_framefmt *format;
183
184	format = v4l2_subdev_get_try_format(fh, SRU_PAD_SINK);
185
186	if (fse->index \|\| fse->code != format->code)
187	return -EINVAL;
188
189	if (fse->pad == SRU_PAD_SINK) {
190	fse->min_width = SRU_MIN_SIZE;
191	fse->max_width = SRU_MAX_SIZE;
192	fse->min_height = SRU_MIN_SIZE;
193	fse->max_height = SRU_MAX_SIZE;
194	} else {
195	fse->min_width = format->width;
196	fse->min_height = format->height;
197	if (format->width <= SRU_MAX_SIZE / 2 &&
198	format->height <= SRU_MAX_SIZE / 2) {
199	fse->max_width = format->width * 2;
200	fse->max_height = format->height * 2;
201	} else {
202	fse->max_width = format->width;
203	fse->max_height = format->height;
204	}
205	}
206
207	return 0;
208	}
209
210	static int sru_get_format(struct v4l2_subdev subdev, struct v4l2_subdev_fh fh,
211	struct v4l2_subdev_format *fmt)
212	{
213	struct vsp1_sru *sru = to_sru(subdev);
214
215	fmt->format = *vsp1_entity_get_pad_format(&sru->entity, fh, fmt->pad,
216	fmt->which);
217
218	return 0;
219	}
220
221	static void sru_try_format(struct vsp1_sru sru, struct v4l2_subdev_fh fh,
222	unsigned int pad, struct v4l2_mbus_framefmt *fmt,
223	enum v4l2_subdev_format_whence which)
224	{
225	struct v4l2_mbus_framefmt *format;
226	unsigned int input_area;
227	unsigned int output_area;
228
229	switch (pad) {
230	case SRU_PAD_SINK:
231	/* Default to YUV if the requested format is not supported. */
232	if (fmt->code != V4L2_MBUS_FMT_ARGB8888_1X32 &&
233	fmt->code != V4L2_MBUS_FMT_AYUV8_1X32)
234	fmt->code = V4L2_MBUS_FMT_AYUV8_1X32;
235
236	fmt->width = clamp(fmt->width, SRU_MIN_SIZE, SRU_MAX_SIZE);
237	fmt->height = clamp(fmt->height, SRU_MIN_SIZE, SRU_MAX_SIZE);
238	break;
239
240	case SRU_PAD_SOURCE:
241	/* The SRU can't perform format conversion. */
242	format = vsp1_entity_get_pad_format(&sru->entity, fh,
243	SRU_PAD_SINK, which);
244	fmt->code = format->code;
245
246	/* We can upscale by 2 in both direction, but not independently.
247	* Compare the input and output rectangles areas (avoiding
248	* integer overflows on the output): if the requested output
249	* area is larger than 1.5^2 the input area upscale by two,
250	* otherwise don't scale.
251	*/
252	input_area = format->width * format->height;
253	output_area = min(fmt->width, SRU_MAX_SIZE)
254	* min(fmt->height, SRU_MAX_SIZE);
255
256	if (fmt->width <= SRU_MAX_SIZE / 2 &&
257	fmt->height <= SRU_MAX_SIZE / 2 &&
258	output_area > input_area * 9 / 4) {
259	fmt->width = format->width * 2;
260	fmt->height = format->height * 2;
261	} else {
262	fmt->width = format->width;
263	fmt->height = format->height;
264	}
265	break;
266	}
267
268	fmt->field = V4L2_FIELD_NONE;
269	fmt->colorspace = V4L2_COLORSPACE_SRGB;
270	}
271
272	static int sru_set_format(struct v4l2_subdev subdev, struct v4l2_subdev_fh fh,
273	struct v4l2_subdev_format *fmt)
274	{
275	struct vsp1_sru *sru = to_sru(subdev);
276	struct v4l2_mbus_framefmt *format;
277
278	sru_try_format(sru, fh, fmt->pad, &fmt->format, fmt->which);
279
280	format = vsp1_entity_get_pad_format(&sru->entity, fh, fmt->pad,
281	fmt->which);
282	*format = fmt->format;
283
284	if (fmt->pad == SRU_PAD_SINK) {
285	/* Propagate the format to the source pad. */
286	format = vsp1_entity_get_pad_format(&sru->entity, fh,
287	SRU_PAD_SOURCE, fmt->which);
288	*format = fmt->format;
289
290	sru_try_format(sru, fh, SRU_PAD_SOURCE, format, fmt->which);
291	}
292
293	return 0;
294	}
295
296	/* -----------------------------------------------------------------------------
297	* V4L2 Subdevice Operations
298	*/
299
300	static struct v4l2_subdev_video_ops sru_video_ops = {
301	.s_stream = sru_s_stream,
302	};
303
304	static struct v4l2_subdev_pad_ops sru_pad_ops = {
305	.enum_mbus_code = sru_enum_mbus_code,
306	.enum_frame_size = sru_enum_frame_size,
307	.get_fmt = sru_get_format,
308	.set_fmt = sru_set_format,
309	};
310
311	static struct v4l2_subdev_ops sru_ops = {
312	.video = &sru_video_ops,
313	.pad = &sru_pad_ops,
314	};
315
316	/* -----------------------------------------------------------------------------
317	* Initialization and Cleanup
318	*/
319
320	struct vsp1_sru vsp1_sru_create(struct vsp1_device vsp1)
321	{
322	struct v4l2_subdev *subdev;
323	struct vsp1_sru *sru;
324	int ret;
325
326	sru = devm_kzalloc(vsp1->dev, sizeof(*sru), GFP_KERNEL);
327	if (sru == NULL)
328	return ERR_PTR(-ENOMEM);
329
330	sru->entity.type = VSP1_ENTITY_SRU;
a626e64e LP	331
	332	ret = vsp1_entity_init(vsp1, &sru->entity, 2);
	333	if (ret < 0)
	334	return ERR_PTR(ret);
	335
	336	/* Initialize the V4L2 subdev. */
	337	subdev = &sru->entity.subdev;
	338	v4l2_subdev_init(subdev, &sru_ops);
	339
	340	subdev->entity.ops = &vsp1_media_ops;
	341	subdev->internal_ops = &vsp1_subdev_internal_ops;
	342	snprintf(subdev->name, sizeof(subdev->name), "%s sru",
	343	dev_name(vsp1->dev));
	344	v4l2_set_subdevdata(subdev, sru);
	345	subdev->flags \|= V4L2_SUBDEV_FL_HAS_DEVNODE;
	346
	347	vsp1_entity_init_formats(subdev, NULL);
	348
	349	/* Initialize the control handler. */
	350	v4l2_ctrl_handler_init(&sru->ctrls, 1);
	351	v4l2_ctrl_new_custom(&sru->ctrls, &sru_intensity_control, NULL);
a1606102	352
a626e64e LP	353	sru->entity.subdev.ctrl_handler = &sru->ctrls;
a626e64e LP	354
a1606102 LP	355	if (sru->ctrls.error) {
	356	dev_err(vsp1->dev, "sru: failed to initialize controls\n");
	357	ret = sru->ctrls.error;
	358	vsp1_entity_destroy(&sru->entity);
	359	return ERR_PTR(ret);
	360	}
	361
	362	v4l2_ctrl_handler_setup(&sru->ctrls);
	363
a626e64e LP	364	return sru;
a626e64e LP	365	}