media: split test drivers from platform directory

When the first test device was added (vivi.c), there were just
one file. I was too lazy on that time to create a separate
directory just for it, so I kept it together with platform.

Now, we have vivid, vicodec, vim2m and vimc. Also, a new
virtual driver has been prepared to support DVB API.

So, it is time to solve this mess, by placing test stuff
on a separate directory.

It should be noticed that we also have some skeleton drivers
(for V4L and for DVB). For now, we'll keep them separate,
as they're not really test drivers, but instead, just
examples. The DVB frontend ones will likely be part of a new DVB
test driver. By that time, it should make sense to move them
here as well.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 0 insertions, 581 deletions

diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
deleted file mode 100644
index baf6bf9f65b5..000000000000
--- a/drivers/media/platform/vimc/vimc-debayer.c
+++ /dev/null
@@ -1,581 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * vimc-debayer.c Virtual Media Controller Driver
- *
- * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
- */
-
-#include <linux/moduleparam.h>
-#include <linux/platform_device.h>
-#include <linux/vmalloc.h>
-#include <linux/v4l2-mediabus.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-event.h>
-#include <media/v4l2-subdev.h>
-
-#include "vimc-common.h"
-
-enum vimc_deb_rgb_colors {
-	VIMC_DEB_RED = 0,
-	VIMC_DEB_GREEN = 1,
-	VIMC_DEB_BLUE = 2,
-};
-
-struct vimc_deb_pix_map {
-	u32 code;
-	enum vimc_deb_rgb_colors order[2][2];
-};
-
-struct vimc_deb_device {
-	struct vimc_ent_device ved;
-	struct v4l2_subdev sd;
-	/* The active format */
-	struct v4l2_mbus_framefmt sink_fmt;
-	u32 src_code;
-	void (*set_rgb_src)(struct vimc_deb_device *vdeb, unsigned int lin,
-			    unsigned int col, unsigned int rgb[3]);
-	/* Values calculated when the stream starts */
-	u8 *src_frame;
-	const struct vimc_deb_pix_map *sink_pix_map;
-	unsigned int sink_bpp;
-	unsigned int mean_win_size;
-	struct v4l2_ctrl_handler hdl;
-	struct media_pad pads[2];
-};
-
-static const struct v4l2_mbus_framefmt sink_fmt_default = {
-	.width = 640,
-	.height = 480,
-	.code = MEDIA_BUS_FMT_SRGGB8_1X8,
-	.field = V4L2_FIELD_NONE,
-	.colorspace = V4L2_COLORSPACE_DEFAULT,
-};
-
-static const struct vimc_deb_pix_map vimc_deb_pix_map_list[] = {
-	{
-		.code = MEDIA_BUS_FMT_SBGGR8_1X8,
-		.order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
-			   { VIMC_DEB_GREEN, VIMC_DEB_RED } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SGBRG8_1X8,
-		.order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
-			   { VIMC_DEB_RED, VIMC_DEB_GREEN } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SGRBG8_1X8,
-		.order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
-			   { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SRGGB8_1X8,
-		.order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
-			   { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SBGGR10_1X10,
-		.order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
-			   { VIMC_DEB_GREEN, VIMC_DEB_RED } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SGBRG10_1X10,
-		.order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
-			   { VIMC_DEB_RED, VIMC_DEB_GREEN } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SGRBG10_1X10,
-		.order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
-			   { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SRGGB10_1X10,
-		.order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
-			   { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SBGGR12_1X12,
-		.order = { { VIMC_DEB_BLUE, VIMC_DEB_GREEN },
-			   { VIMC_DEB_GREEN, VIMC_DEB_RED } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SGBRG12_1X12,
-		.order = { { VIMC_DEB_GREEN, VIMC_DEB_BLUE },
-			   { VIMC_DEB_RED, VIMC_DEB_GREEN } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SGRBG12_1X12,
-		.order = { { VIMC_DEB_GREEN, VIMC_DEB_RED },
-			   { VIMC_DEB_BLUE, VIMC_DEB_GREEN } }
-	},
-	{
-		.code = MEDIA_BUS_FMT_SRGGB12_1X12,
-		.order = { { VIMC_DEB_RED, VIMC_DEB_GREEN },
-			   { VIMC_DEB_GREEN, VIMC_DEB_BLUE } }
-	},
-};
-
-static const struct vimc_deb_pix_map *vimc_deb_pix_map_by_code(u32 code)
-{
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(vimc_deb_pix_map_list); i++)
-		if (vimc_deb_pix_map_list[i].code == code)
-			return &vimc_deb_pix_map_list[i];
-
-	return NULL;
-}
-
-static int vimc_deb_init_cfg(struct v4l2_subdev *sd,
-			     struct v4l2_subdev_pad_config *cfg)
-{
-	struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
-	struct v4l2_mbus_framefmt *mf;
-	unsigned int i;
-
-	mf = v4l2_subdev_get_try_format(sd, cfg, 0);
-	*mf = sink_fmt_default;
-
-	for (i = 1; i < sd->entity.num_pads; i++) {
-		mf = v4l2_subdev_get_try_format(sd, cfg, i);
-		*mf = sink_fmt_default;
-		mf->code = vdeb->src_code;
-	}
-
-	return 0;
-}
-
-static int vimc_deb_enum_mbus_code(struct v4l2_subdev *sd,
-				   struct v4l2_subdev_pad_config *cfg,
-				   struct v4l2_subdev_mbus_code_enum *code)
-{
-	/* We only support one format for source pads */
-	if (VIMC_IS_SRC(code->pad)) {
-		struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
-
-		if (code->index)
-			return -EINVAL;
-
-		code->code = vdeb->src_code;
-	} else {
-		if (code->index >= ARRAY_SIZE(vimc_deb_pix_map_list))
-			return -EINVAL;
-
-		code->code = vimc_deb_pix_map_list[code->index].code;
-	}
-
-	return 0;
-}
-
-static int vimc_deb_enum_frame_size(struct v4l2_subdev *sd,
-				    struct v4l2_subdev_pad_config *cfg,
-				    struct v4l2_subdev_frame_size_enum *fse)
-{
-	struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
-
-	if (fse->index)
-		return -EINVAL;
-
-	if (VIMC_IS_SINK(fse->pad)) {
-		const struct vimc_deb_pix_map *vpix =
-			vimc_deb_pix_map_by_code(fse->code);
-
-		if (!vpix)
-			return -EINVAL;
-	} else if (fse->code != vdeb->src_code) {
-		return -EINVAL;
-	}
-
-	fse->min_width = VIMC_FRAME_MIN_WIDTH;
-	fse->max_width = VIMC_FRAME_MAX_WIDTH;
-	fse->min_height = VIMC_FRAME_MIN_HEIGHT;
-	fse->max_height = VIMC_FRAME_MAX_HEIGHT;
-
-	return 0;
-}
-
-static int vimc_deb_get_fmt(struct v4l2_subdev *sd,
-			    struct v4l2_subdev_pad_config *cfg,
-			    struct v4l2_subdev_format *fmt)
-{
-	struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
-
-	/* Get the current sink format */
-	fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
-		      *v4l2_subdev_get_try_format(sd, cfg, 0) :
-		      vdeb->sink_fmt;
-
-	/* Set the right code for the source pad */
-	if (VIMC_IS_SRC(fmt->pad))
-		fmt->format.code = vdeb->src_code;
-
-	return 0;
-}
-
-static void vimc_deb_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
-{
-	const struct vimc_deb_pix_map *vpix;
-
-	/* Don't accept a code that is not on the debayer table */
-	vpix = vimc_deb_pix_map_by_code(fmt->code);
-	if (!vpix)
-		fmt->code = sink_fmt_default.code;
-
-	fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
-			     VIMC_FRAME_MAX_WIDTH) & ~1;
-	fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
-			      VIMC_FRAME_MAX_HEIGHT) & ~1;
-
-	if (fmt->field == V4L2_FIELD_ANY)
-		fmt->field = sink_fmt_default.field;
-
-	vimc_colorimetry_clamp(fmt);
-}
-
-static int vimc_deb_set_fmt(struct v4l2_subdev *sd,
-			    struct v4l2_subdev_pad_config *cfg,
-			    struct v4l2_subdev_format *fmt)
-{
-	struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
-	struct v4l2_mbus_framefmt *sink_fmt;
-
-	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
-		/* Do not change the format while stream is on */
-		if (vdeb->src_frame)
-			return -EBUSY;
-
-		sink_fmt = &vdeb->sink_fmt;
-	} else {
-		sink_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
-	}
-
-	/*
-	 * Do not change the format of the source pad,
-	 * it is propagated from the sink
-	 */
-	if (VIMC_IS_SRC(fmt->pad)) {
-		fmt->format = *sink_fmt;
-		/* TODO: Add support for other formats */
-		fmt->format.code = vdeb->src_code;
-	} else {
-		/* Set the new format in the sink pad */
-		vimc_deb_adjust_sink_fmt(&fmt->format);
-
-		dev_dbg(vdeb->ved.dev, "%s: sink format update: "
-			"old:%dx%d (0x%x, %d, %d, %d, %d) "
-			"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vdeb->sd.name,
-			/* old */
-			sink_fmt->width, sink_fmt->height, sink_fmt->code,
-			sink_fmt->colorspace, sink_fmt->quantization,
-			sink_fmt->xfer_func, sink_fmt->ycbcr_enc,
-			/* new */
-			fmt->format.width, fmt->format.height, fmt->format.code,
-			fmt->format.colorspace,	fmt->format.quantization,
-			fmt->format.xfer_func, fmt->format.ycbcr_enc);
-
-		*sink_fmt = fmt->format;
-	}
-
-	return 0;
-}
-
-static const struct v4l2_subdev_pad_ops vimc_deb_pad_ops = {
-	.init_cfg		= vimc_deb_init_cfg,
-	.enum_mbus_code		= vimc_deb_enum_mbus_code,
-	.enum_frame_size	= vimc_deb_enum_frame_size,
-	.get_fmt		= vimc_deb_get_fmt,
-	.set_fmt		= vimc_deb_set_fmt,
-};
-
-static void vimc_deb_set_rgb_mbus_fmt_rgb888_1x24(struct vimc_deb_device *vdeb,
-						  unsigned int lin,
-						  unsigned int col,
-						  unsigned int rgb[3])
-{
-	unsigned int i, index;
-
-	index = VIMC_FRAME_INDEX(lin, col, vdeb->sink_fmt.width, 3);
-	for (i = 0; i < 3; i++)
-		vdeb->src_frame[index + i] = rgb[i];
-}
-
-static int vimc_deb_s_stream(struct v4l2_subdev *sd, int enable)
-{
-	struct vimc_deb_device *vdeb = v4l2_get_subdevdata(sd);
-
-	if (enable) {
-		const struct vimc_pix_map *vpix;
-		unsigned int frame_size;
-
-		if (vdeb->src_frame)
-			return 0;
-
-		/* Calculate the frame size of the source pad */
-		vpix = vimc_pix_map_by_code(vdeb->src_code);
-		frame_size = vdeb->sink_fmt.width * vdeb->sink_fmt.height *
-				vpix->bpp;
-
-		/* Save the bytes per pixel of the sink */
-		vpix = vimc_pix_map_by_code(vdeb->sink_fmt.code);
-		vdeb->sink_bpp = vpix->bpp;
-
-		/* Get the corresponding pixel map from the table */
-		vdeb->sink_pix_map =
-			vimc_deb_pix_map_by_code(vdeb->sink_fmt.code);
-
-		/*
-		 * Allocate the frame buffer. Use vmalloc to be able to
-		 * allocate a large amount of memory
-		 */
-		vdeb->src_frame = vmalloc(frame_size);
-		if (!vdeb->src_frame)
-			return -ENOMEM;
-
-	} else {
-		if (!vdeb->src_frame)
-			return 0;
-
-		vfree(vdeb->src_frame);
-		vdeb->src_frame = NULL;
-	}
-
-	return 0;
-}
-
-static const struct v4l2_subdev_core_ops vimc_deb_core_ops = {
-	.log_status = v4l2_ctrl_subdev_log_status,
-	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
-	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
-};
-
-static const struct v4l2_subdev_video_ops vimc_deb_video_ops = {
-	.s_stream = vimc_deb_s_stream,
-};
-
-static const struct v4l2_subdev_ops vimc_deb_ops = {
-	.core = &vimc_deb_core_ops,
-	.pad = &vimc_deb_pad_ops,
-	.video = &vimc_deb_video_ops,
-};
-
-static unsigned int vimc_deb_get_val(const u8 *bytes,
-				     const unsigned int n_bytes)
-{
-	unsigned int i;
-	unsigned int acc = 0;
-
-	for (i = 0; i < n_bytes; i++)
-		acc = acc + (bytes[i] << (8 * i));
-
-	return acc;
-}
-
-static void vimc_deb_calc_rgb_sink(struct vimc_deb_device *vdeb,
-				   const u8 *frame,
-				   const unsigned int lin,
-				   const unsigned int col,
-				   unsigned int rgb[3])
-{
-	unsigned int i, seek, wlin, wcol;
-	unsigned int n_rgb[3] = {0, 0, 0};
-
-	for (i = 0; i < 3; i++)
-		rgb[i] = 0;
-
-	/*
-	 * Calculate how many we need to subtract to get to the pixel in
-	 * the top left corner of the mean window (considering the current
-	 * pixel as the center)
-	 */
-	seek = vdeb->mean_win_size / 2;
-
-	/* Sum the values of the colors in the mean window */
-
-	dev_dbg(vdeb->ved.dev,
-		"deb: %s: --- Calc pixel %dx%d, window mean %d, seek %d ---\n",
-		vdeb->sd.name, lin, col, vdeb->sink_fmt.height, seek);
-
-	/*
-	 * Iterate through all the lines in the mean window, start
-	 * with zero if the pixel is outside the frame and don't pass
-	 * the height when the pixel is in the bottom border of the
-	 * frame
-	 */
-	for (wlin = seek > lin ? 0 : lin - seek;
-	     wlin < lin + seek + 1 && wlin < vdeb->sink_fmt.height;
-	     wlin++) {
-
-		/*
-		 * Iterate through all the columns in the mean window, start
-		 * with zero if the pixel is outside the frame and don't pass
-		 * the width when the pixel is in the right border of the
-		 * frame
-		 */
-		for (wcol = seek > col ? 0 : col - seek;
-		     wcol < col + seek + 1 && wcol < vdeb->sink_fmt.width;
-		     wcol++) {
-			enum vimc_deb_rgb_colors color;
-			unsigned int index;
-
-			/* Check which color this pixel is */
-			color = vdeb->sink_pix_map->order[wlin % 2][wcol % 2];
-
-			index = VIMC_FRAME_INDEX(wlin, wcol,
-						 vdeb->sink_fmt.width,
-						 vdeb->sink_bpp);
-
-			dev_dbg(vdeb->ved.dev,
-				"deb: %s: RGB CALC: frame index %d, win pos %dx%d, color %d\n",
-				vdeb->sd.name, index, wlin, wcol, color);
-
-			/* Get its value */
-			rgb[color] = rgb[color] +
-				vimc_deb_get_val(&frame[index], vdeb->sink_bpp);
-
-			/* Save how many values we already added */
-			n_rgb[color]++;
-
-			dev_dbg(vdeb->ved.dev, "deb: %s: RGB CALC: val %d, n %d\n",
-				vdeb->sd.name, rgb[color], n_rgb[color]);
-		}
-	}
-
-	/* Calculate the mean */
-	for (i = 0; i < 3; i++) {
-		dev_dbg(vdeb->ved.dev,
-			"deb: %s: PRE CALC: %dx%d Color %d, val %d, n %d\n",
-			vdeb->sd.name, lin, col, i, rgb[i], n_rgb[i]);
-
-		if (n_rgb[i])
-			rgb[i] = rgb[i] / n_rgb[i];
-
-		dev_dbg(vdeb->ved.dev,
-			"deb: %s: FINAL CALC: %dx%d Color %d, val %d\n",
-			vdeb->sd.name, lin, col, i, rgb[i]);
-	}
-}
-
-static void *vimc_deb_process_frame(struct vimc_ent_device *ved,
-				    const void *sink_frame)
-{
-	struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device,
-						    ved);
-	unsigned int rgb[3];
-	unsigned int i, j;
-
-	/* If the stream in this node is not active, just return */
-	if (!vdeb->src_frame)
-		return ERR_PTR(-EINVAL);
-
-	for (i = 0; i < vdeb->sink_fmt.height; i++)
-		for (j = 0; j < vdeb->sink_fmt.width; j++) {
-			vimc_deb_calc_rgb_sink(vdeb, sink_frame, i, j, rgb);
-			vdeb->set_rgb_src(vdeb, i, j, rgb);
-		}
-
-	return vdeb->src_frame;
-}
-
-static int vimc_deb_s_ctrl(struct v4l2_ctrl *ctrl)
-{
-	struct vimc_deb_device *vdeb =
-		container_of(ctrl->handler, struct vimc_deb_device, hdl);
-
-	switch (ctrl->id) {
-	case VIMC_CID_MEAN_WIN_SIZE:
-		vdeb->mean_win_size = ctrl->val;
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static const struct v4l2_ctrl_ops vimc_deb_ctrl_ops = {
-	.s_ctrl = vimc_deb_s_ctrl,
-};
-
-void vimc_deb_release(struct vimc_ent_device *ved)
-{
-	struct vimc_deb_device *vdeb =
-		container_of(ved, struct vimc_deb_device, ved);
-
-	v4l2_ctrl_handler_free(&vdeb->hdl);
-	media_entity_cleanup(vdeb->ved.ent);
-	kfree(vdeb);
-}
-
-static const struct v4l2_ctrl_config vimc_deb_ctrl_class = {
-	.flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY,
-	.id = VIMC_CID_VIMC_CLASS,
-	.name = "VIMC Controls",
-	.type = V4L2_CTRL_TYPE_CTRL_CLASS,
-};
-
-static const struct v4l2_ctrl_config vimc_deb_ctrl_mean_win_size = {
-	.ops = &vimc_deb_ctrl_ops,
-	.id = VIMC_CID_MEAN_WIN_SIZE,
-	.name = "Debayer Mean Window Size",
-	.type = V4L2_CTRL_TYPE_INTEGER,
-	.min = 1,
-	.max = 25,
-	.step = 2,
-	.def = 3,
-};
-
-struct vimc_ent_device *vimc_deb_add(struct vimc_device *vimc,
-				     const char *vcfg_name)
-{
-	struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
-	struct vimc_deb_device *vdeb;
-	int ret;
-
-	/* Allocate the vdeb struct */
-	vdeb = kzalloc(sizeof(*vdeb), GFP_KERNEL);
-	if (!vdeb)
-		return NULL;
-
-	/* Create controls: */
-	v4l2_ctrl_handler_init(&vdeb->hdl, 2);
-	v4l2_ctrl_new_custom(&vdeb->hdl, &vimc_deb_ctrl_class, NULL);
-	v4l2_ctrl_new_custom(&vdeb->hdl, &vimc_deb_ctrl_mean_win_size, NULL);
-	vdeb->sd.ctrl_handler = &vdeb->hdl;
-	if (vdeb->hdl.error) {
-		ret = vdeb->hdl.error;
-		goto err_free_vdeb;
-	}
-
-	/* Initialize ved and sd */
-	vdeb->pads[0].flags = MEDIA_PAD_FL_SINK;
-	vdeb->pads[1].flags = MEDIA_PAD_FL_SOURCE;
-
-	ret = vimc_ent_sd_register(&vdeb->ved, &vdeb->sd, v4l2_dev,
-				   vcfg_name,
-				   MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV, 2,
-				   vdeb->pads, &vimc_deb_ops);
-	if (ret)
-		goto err_free_hdl;
-
-	vdeb->ved.process_frame = vimc_deb_process_frame;
-	vdeb->ved.dev = vimc->mdev.dev;
-	vdeb->mean_win_size = vimc_deb_ctrl_mean_win_size.def;
-
-	/* Initialize the frame format */
-	vdeb->sink_fmt = sink_fmt_default;
-	/*
-	 * TODO: Add support for more output formats, we only support
-	 * RGB888 for now
-	 * NOTE: the src format is always the same as the sink, except
-	 * for the code
-	 */
-	vdeb->src_code = MEDIA_BUS_FMT_RGB888_1X24;
-	vdeb->set_rgb_src = vimc_deb_set_rgb_mbus_fmt_rgb888_1x24;
-
-	return &vdeb->ved;
-
-err_free_hdl:
-	v4l2_ctrl_handler_free(&vdeb->hdl);
-err_free_vdeb:
-	kfree(vdeb);
-
-	return NULL;
-}