[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_dl.h"
#include "vsp1_sru.h"

#define SRU_MIN_SIZE				4U
#define SRU_MAX_SIZE				8190U

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

static inline void vsp1_sru_write(struct vsp1_sru *sru, struct vsp1_dl_list *dl,
				  u32 reg, u32 data)
{
	vsp1_dl_list_write(dl, reg, data);
}

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

#define V4L2_CID_VSP1_SRU_INTENSITY		(V4L2_CID_USER_BASE + 1)

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_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 Operations
 */

static int sru_enum_mbus_code(struct v4l2_subdev *subdev,
			      struct v4l2_subdev_pad_config *cfg,
			      struct v4l2_subdev_mbus_code_enum *code)
{
	static const unsigned int codes[] = {
		MEDIA_BUS_FMT_ARGB8888_1X32,
		MEDIA_BUS_FMT_AYUV8_1X32,
	};
	struct vsp1_sru *sru = to_sru(subdev);

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

		code->code = codes[code->index];
	} else {
		struct v4l2_subdev_pad_config *config;
		struct v4l2_mbus_framefmt *format;

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

		config = vsp1_entity_get_pad_config(&sru->entity, cfg,
						    code->which);
		if (!config)
			return -EINVAL;

		format = vsp1_entity_get_pad_format(&sru->entity, config,
						    SRU_PAD_SINK);
		code->code = format->code;
	}

	return 0;
}

static int sru_enum_frame_size(struct v4l2_subdev *subdev,
			       struct v4l2_subdev_pad_config *cfg,
			       struct v4l2_subdev_frame_size_enum *fse)
{
	struct vsp1_sru *sru = to_sru(subdev);
	struct v4l2_subdev_pad_config *config;
	struct v4l2_mbus_framefmt *format;

	config = vsp1_entity_get_pad_config(&sru->entity, cfg, fse->which);
	if (!config)
		return -EINVAL;

	format = vsp1_entity_get_pad_format(&sru->entity, config, 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_pad_config *cfg,
			  struct v4l2_subdev_format *fmt)
{
	struct vsp1_sru *sru = to_sru(subdev);
	struct v4l2_subdev_pad_config *config;

	config = vsp1_entity_get_pad_config(&sru->entity, cfg, fmt->which);
	if (!config)
		return -EINVAL;

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

	return 0;
}

static void sru_try_format(struct vsp1_sru *sru,
			   struct v4l2_subdev_pad_config *config,
			   unsigned int pad, struct v4l2_mbus_framefmt *fmt)
{
	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 != MEDIA_BUS_FMT_ARGB8888_1X32 &&
		    fmt->code != MEDIA_BUS_FMT_AYUV8_1X32)
			fmt->code = MEDIA_BUS_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, config,
						    SRU_PAD_SINK);
		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_pad_config *cfg,
			  struct v4l2_subdev_format *fmt)
{
	struct vsp1_sru *sru = to_sru(subdev);
	struct v4l2_subdev_pad_config *config;
	struct v4l2_mbus_framefmt *format;

	config = vsp1_entity_get_pad_config(&sru->entity, cfg, fmt->which);
	if (!config)
		return -EINVAL;

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

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

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

		sru_try_format(sru, config, SRU_PAD_SOURCE, format);
	}

	return 0;
}

static struct v4l2_subdev_pad_ops sru_pad_ops = {
	.init_cfg = vsp1_entity_init_cfg,
	.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 = {
	.pad    = &sru_pad_ops,
};

/* -----------------------------------------------------------------------------
 * VSP1 Entity Operations
 */

static void sru_configure(struct vsp1_entity *entity, struct vsp1_dl_list *dl)
{
	const struct vsp1_sru_param *param;
	struct vsp1_sru *sru = to_sru(&entity->subdev);
	struct v4l2_mbus_framefmt *input;
	struct v4l2_mbus_framefmt *output;
	u32 ctrl0;

	input = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
					   SRU_PAD_SINK);
	output = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
					    SRU_PAD_SOURCE);

	if (input->code == MEDIA_BUS_FMT_ARGB8888_1X32)
		ctrl0 = VI6_SRU_CTRL0_PARAM2 | VI6_SRU_CTRL0_PARAM3
		      | VI6_SRU_CTRL0_PARAM4;
	else
		ctrl0 = VI6_SRU_CTRL0_PARAM3;

	if (input->width != output->width)
		ctrl0 |= VI6_SRU_CTRL0_MODE_UPSCALE;

	param = &vsp1_sru_params[sru->intensity - 1];

	ctrl0 |= param->ctrl0;

	vsp1_sru_write(sru, dl, VI6_SRU_CTRL0, ctrl0);
	vsp1_sru_write(sru, dl, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);
	vsp1_sru_write(sru, dl, VI6_SRU_CTRL2, param->ctrl2);
}

static const struct vsp1_entity_operations sru_entity_ops = {
	.configure = sru_configure,
};

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

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

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

	sru->entity.ops = &sru_entity_ops;
	sru->entity.type = VSP1_ENTITY_SRU;

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

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

	sru->intensity = 1;

	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);
	}

	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"
5e8dbbf3	20	#include "vsp1_dl.h"
a626e64e LP	21	#include "vsp1_sru.h"
	22
	23	#define SRU_MIN_SIZE 4U
	24	#define SRU_MAX_SIZE 8190U
	25
	26	/* -----------------------------------------------------------------------------
	27	* Device Access
	28	*/
	29
5e8dbbf3 LP	30	static inline void vsp1_sru_write(struct vsp1_sru sru, struct vsp1_dl_list dl,
5e8dbbf3 LP	31	u32 reg, u32 data)
a626e64e	32	{
5e8dbbf3	33	vsp1_dl_list_write(dl, reg, data);
a626e64e LP	34	}
	35
	36	/* -----------------------------------------------------------------------------
	37	* Controls
	38	*/
	39
	40	#define V4L2_CID_VSP1_SRU_INTENSITY (V4L2_CID_USER_BASE + 1)
	41
a626e64e LP	42	struct vsp1_sru_param {
	43	u32 ctrl0;
	44	u32 ctrl2;
	45	};
	46
	47	#define VI6_SRU_CTRL0_PARAMS(p0, p1) \
	48	(((p0) << VI6_SRU_CTRL0_PARAM0_SHIFT) \| \
	49	((p1) << VI6_SRU_CTRL0_PARAM1_SHIFT))
	50
	51	#define VI6_SRU_CTRL2_PARAMS(p6, p7, p8) \
	52	(((p6) << VI6_SRU_CTRL2_PARAM6_SHIFT) \| \
	53	((p7) << VI6_SRU_CTRL2_PARAM7_SHIFT) \| \
	54	((p8) << VI6_SRU_CTRL2_PARAM8_SHIFT))
	55
	56	static const struct vsp1_sru_param vsp1_sru_params[] = {
	57	{
	58	.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) \| VI6_SRU_CTRL0_EN,
	59	.ctrl2 = VI6_SRU_CTRL2_PARAMS(24, 40, 255),
	60	}, {
	61	.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) \| VI6_SRU_CTRL0_EN,
	62	.ctrl2 = VI6_SRU_CTRL2_PARAMS(8, 16, 255),
	63	}, {
	64	.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) \| VI6_SRU_CTRL0_EN,
	65	.ctrl2 = VI6_SRU_CTRL2_PARAMS(36, 60, 255),
	66	}, {
	67	.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) \| VI6_SRU_CTRL0_EN,
	68	.ctrl2 = VI6_SRU_CTRL2_PARAMS(12, 27, 255),
	69	}, {
	70	.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) \| VI6_SRU_CTRL0_EN,
	71	.ctrl2 = VI6_SRU_CTRL2_PARAMS(48, 80, 255),
	72	}, {
	73	.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) \| VI6_SRU_CTRL0_EN,
	74	.ctrl2 = VI6_SRU_CTRL2_PARAMS(16, 36, 255),
	75	},
	76	};
	77
58f896d8 LP	78	static int sru_s_ctrl(struct v4l2_ctrl *ctrl)
	79	{
	80	struct vsp1_sru *sru =
	81	container_of(ctrl->handler, struct vsp1_sru, ctrls);
58f896d8 LP	82
	83	switch (ctrl->id) {
	84	case V4L2_CID_VSP1_SRU_INTENSITY:
d884a8b2	85	sru->intensity = ctrl->val;
58f896d8 LP	86	break;
	87	}
	88
	89	return 0;
	90	}
	91
	92	static const struct v4l2_ctrl_ops sru_ctrl_ops = {
	93	.s_ctrl = sru_s_ctrl,
	94	};
	95
	96	static const struct v4l2_ctrl_config sru_intensity_control = {
	97	.ops = &sru_ctrl_ops,
	98	.id = V4L2_CID_VSP1_SRU_INTENSITY,
	99	.name = "Intensity",
	100	.type = V4L2_CTRL_TYPE_INTEGER,
	101	.min = 1,
	102	.max = 6,
	103	.def = 1,
	104	.step = 1,
	105	};
	106
	107	/* -----------------------------------------------------------------------------
7b905f05	108	* V4L2 Subdevice Operations
a626e64e LP	109	*/
	110
	111	static int sru_enum_mbus_code(struct v4l2_subdev *subdev,
f7234138	112	struct v4l2_subdev_pad_config *cfg,
a626e64e LP	113	struct v4l2_subdev_mbus_code_enum *code)
	114	{
	115	static const unsigned int codes[] = {
27ffaeb0 BB	116	MEDIA_BUS_FMT_ARGB8888_1X32,
27ffaeb0 BB	117	MEDIA_BUS_FMT_AYUV8_1X32,
a626e64e	118	};
3f1ccf16	119	struct vsp1_sru *sru = to_sru(subdev);
a626e64e LP	120
	121	if (code->pad == SRU_PAD_SINK) {
	122	if (code->index >= ARRAY_SIZE(codes))
	123	return -EINVAL;
	124
	125	code->code = codes[code->index];
	126	} else {
e790c3cb LP	127	struct v4l2_subdev_pad_config *config;
	128	struct v4l2_mbus_framefmt *format;
	129
a626e64e LP	130	/* The SRU can't perform format conversion, the sink format is
	131	* always identical to the source format.
	132	*/
	133	if (code->index)
	134	return -EINVAL;
	135
e790c3cb LP	136	config = vsp1_entity_get_pad_config(&sru->entity, cfg,
	137	code->which);
	138	if (!config)
	139	return -EINVAL;
	140
	141	format = vsp1_entity_get_pad_format(&sru->entity, config,
	142	SRU_PAD_SINK);
a626e64e LP	143	code->code = format->code;
	144	}
	145
	146	return 0;
	147	}
	148
	149	static int sru_enum_frame_size(struct v4l2_subdev *subdev,
f7234138	150	struct v4l2_subdev_pad_config *cfg,
a626e64e LP	151	struct v4l2_subdev_frame_size_enum *fse)
a626e64e LP	152	{
5778e749	153	struct vsp1_sru *sru = to_sru(subdev);
e790c3cb	154	struct v4l2_subdev_pad_config *config;
a626e64e LP	155	struct v4l2_mbus_framefmt *format;
a626e64e LP	156
e790c3cb LP	157	config = vsp1_entity_get_pad_config(&sru->entity, cfg, fse->which);
	158	if (!config)
	159	return -EINVAL;
	160
	161	format = vsp1_entity_get_pad_format(&sru->entity, config, SRU_PAD_SINK);
a626e64e LP	162
	163	if (fse->index \|\| fse->code != format->code)
	164	return -EINVAL;
	165
	166	if (fse->pad == SRU_PAD_SINK) {
	167	fse->min_width = SRU_MIN_SIZE;
	168	fse->max_width = SRU_MAX_SIZE;
	169	fse->min_height = SRU_MIN_SIZE;
	170	fse->max_height = SRU_MAX_SIZE;
	171	} else {
	172	fse->min_width = format->width;
	173	fse->min_height = format->height;
	174	if (format->width <= SRU_MAX_SIZE / 2 &&
	175	format->height <= SRU_MAX_SIZE / 2) {
	176	fse->max_width = format->width * 2;
	177	fse->max_height = format->height * 2;
	178	} else {
	179	fse->max_width = format->width;
	180	fse->max_height = format->height;
	181	}
	182	}
	183
	184	return 0;
	185	}
	186
1bd0a1bd LP	187	static int sru_get_format(struct v4l2_subdev *subdev,
1bd0a1bd LP	188	struct v4l2_subdev_pad_config *cfg,
a626e64e LP	189	struct v4l2_subdev_format *fmt)
	190	{
	191	struct vsp1_sru *sru = to_sru(subdev);
e790c3cb LP	192	struct v4l2_subdev_pad_config *config;
	193
	194	config = vsp1_entity_get_pad_config(&sru->entity, cfg, fmt->which);
	195	if (!config)
	196	return -EINVAL;
a626e64e	197
e790c3cb LP	198	fmt->format = *vsp1_entity_get_pad_format(&sru->entity, config,
e790c3cb LP	199	fmt->pad);
a626e64e LP	200
	201	return 0;
	202	}
	203
1bd0a1bd	204	static void sru_try_format(struct vsp1_sru *sru,
e790c3cb LP	205	struct v4l2_subdev_pad_config *config,
e790c3cb LP	206	unsigned int pad, struct v4l2_mbus_framefmt *fmt)
a626e64e LP	207	{
	208	struct v4l2_mbus_framefmt *format;
	209	unsigned int input_area;
	210	unsigned int output_area;
	211
	212	switch (pad) {
	213	case SRU_PAD_SINK:
	214	/* Default to YUV if the requested format is not supported. */
27ffaeb0 BB	215	if (fmt->code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
	216	fmt->code != MEDIA_BUS_FMT_AYUV8_1X32)
	217	fmt->code = MEDIA_BUS_FMT_AYUV8_1X32;
a626e64e LP	218
	219	fmt->width = clamp(fmt->width, SRU_MIN_SIZE, SRU_MAX_SIZE);
	220	fmt->height = clamp(fmt->height, SRU_MIN_SIZE, SRU_MAX_SIZE);
	221	break;
	222
	223	case SRU_PAD_SOURCE:
	224	/* The SRU can't perform format conversion. */
e790c3cb LP	225	format = vsp1_entity_get_pad_format(&sru->entity, config,
e790c3cb LP	226	SRU_PAD_SINK);
a626e64e LP	227	fmt->code = format->code;
	228
	229	/* We can upscale by 2 in both direction, but not independently.
	230	* Compare the input and output rectangles areas (avoiding
	231	* integer overflows on the output): if the requested output
	232	* area is larger than 1.5^2 the input area upscale by two,
	233	* otherwise don't scale.
	234	*/
	235	input_area = format->width * format->height;
	236	output_area = min(fmt->width, SRU_MAX_SIZE)
	237	* min(fmt->height, SRU_MAX_SIZE);
	238
	239	if (fmt->width <= SRU_MAX_SIZE / 2 &&
	240	fmt->height <= SRU_MAX_SIZE / 2 &&
	241	output_area > input_area * 9 / 4) {
	242	fmt->width = format->width * 2;
	243	fmt->height = format->height * 2;
	244	} else {
	245	fmt->width = format->width;
	246	fmt->height = format->height;
	247	}
	248	break;
	249	}
	250
	251	fmt->field = V4L2_FIELD_NONE;
	252	fmt->colorspace = V4L2_COLORSPACE_SRGB;
	253	}
	254
1bd0a1bd LP	255	static int sru_set_format(struct v4l2_subdev *subdev,
1bd0a1bd LP	256	struct v4l2_subdev_pad_config *cfg,
a626e64e LP	257	struct v4l2_subdev_format *fmt)
	258	{
	259	struct vsp1_sru *sru = to_sru(subdev);
e790c3cb	260	struct v4l2_subdev_pad_config *config;
a626e64e LP	261	struct v4l2_mbus_framefmt *format;
a626e64e LP	262
e790c3cb LP	263	config = vsp1_entity_get_pad_config(&sru->entity, cfg, fmt->which);
	264	if (!config)
	265	return -EINVAL;
	266
	267	sru_try_format(sru, config, fmt->pad, &fmt->format);
a626e64e	268
e790c3cb	269	format = vsp1_entity_get_pad_format(&sru->entity, config, fmt->pad);
a626e64e LP	270	*format = fmt->format;
	271
	272	if (fmt->pad == SRU_PAD_SINK) {
	273	/* Propagate the format to the source pad. */
e790c3cb LP	274	format = vsp1_entity_get_pad_format(&sru->entity, config,
e790c3cb LP	275	SRU_PAD_SOURCE);
a626e64e LP	276	*format = fmt->format;
a626e64e LP	277
e790c3cb	278	sru_try_format(sru, config, SRU_PAD_SOURCE, format);
a626e64e LP	279	}
	280
	281	return 0;
	282	}
	283
a626e64e	284	static struct v4l2_subdev_pad_ops sru_pad_ops = {
0efdf0f5	285	.init_cfg = vsp1_entity_init_cfg,
a626e64e LP	286	.enum_mbus_code = sru_enum_mbus_code,
	287	.enum_frame_size = sru_enum_frame_size,
	288	.get_fmt = sru_get_format,
	289	.set_fmt = sru_set_format,
	290	};
	291
	292	static struct v4l2_subdev_ops sru_ops = {
a626e64e LP	293	.pad = &sru_pad_ops,
	294	};
	295
7b905f05 LP	296	/* -----------------------------------------------------------------------------
	297	* VSP1 Entity Operations
	298	*/
	299
5e8dbbf3	300	static void sru_configure(struct vsp1_entity entity, struct vsp1_dl_list dl)
7b905f05 LP	301	{
	302	const struct vsp1_sru_param *param;
	303	struct vsp1_sru *sru = to_sru(&entity->subdev);
	304	struct v4l2_mbus_framefmt *input;
	305	struct v4l2_mbus_framefmt *output;
	306	u32 ctrl0;
	307
	308	input = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
	309	SRU_PAD_SINK);
	310	output = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
	311	SRU_PAD_SOURCE);
	312
	313	if (input->code == MEDIA_BUS_FMT_ARGB8888_1X32)
	314	ctrl0 = VI6_SRU_CTRL0_PARAM2 \| VI6_SRU_CTRL0_PARAM3
	315	\| VI6_SRU_CTRL0_PARAM4;
	316	else
	317	ctrl0 = VI6_SRU_CTRL0_PARAM3;
	318
	319	if (input->width != output->width)
	320	ctrl0 \|= VI6_SRU_CTRL0_MODE_UPSCALE;
	321
	322	param = &vsp1_sru_params[sru->intensity - 1];
	323
	324	ctrl0 \|= param->ctrl0;
	325
5e8dbbf3 LP	326	vsp1_sru_write(sru, dl, VI6_SRU_CTRL0, ctrl0);
	327	vsp1_sru_write(sru, dl, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);
	328	vsp1_sru_write(sru, dl, VI6_SRU_CTRL2, param->ctrl2);
7b905f05 LP	329	}
	330
	331	static const struct vsp1_entity_operations sru_entity_ops = {
	332	.configure = sru_configure,
	333	};
	334
a626e64e LP	335	/* -----------------------------------------------------------------------------
	336	* Initialization and Cleanup
	337	*/
	338
	339	struct vsp1_sru vsp1_sru_create(struct vsp1_device vsp1)
	340	{
a626e64e LP	341	struct vsp1_sru *sru;
	342	int ret;
	343
	344	sru = devm_kzalloc(vsp1->dev, sizeof(*sru), GFP_KERNEL);
	345	if (sru == NULL)
	346	return ERR_PTR(-ENOMEM);
	347
7b905f05	348	sru->entity.ops = &sru_entity_ops;
a626e64e	349	sru->entity.type = VSP1_ENTITY_SRU;
a626e64e	350
823329df	351	ret = vsp1_entity_init(vsp1, &sru->entity, "sru", 2, &sru_ops);
a626e64e LP	352	if (ret < 0)
	353	return ERR_PTR(ret);
	354
a626e64e LP	355	/* Initialize the control handler. */
	356	v4l2_ctrl_handler_init(&sru->ctrls, 1);
	357	v4l2_ctrl_new_custom(&sru->ctrls, &sru_intensity_control, NULL);
a1606102	358
d884a8b2 LP	359	sru->intensity = 1;
d884a8b2 LP	360
a626e64e LP	361	sru->entity.subdev.ctrl_handler = &sru->ctrls;
a626e64e LP	362
a1606102 LP	363	if (sru->ctrls.error) {
	364	dev_err(vsp1->dev, "sru: failed to initialize controls\n");
	365	ret = sru->ctrls.error;
	366	vsp1_entity_destroy(&sru->entity);
	367	return ERR_PTR(ret);
	368	}
	369
a626e64e LP	370	return sru;
a626e64e LP	371	}