1 files changed, 453 insertions, 0 deletions

diff --git a/drivers/media/test-drivers/vimc/vimc-sensor.c b/drivers/media/test-drivers/vimc/vimc-sensor.c
new file mode 100644
index 0000000000..41a3dce2d7
--- /dev/null
+++ b/drivers/media/test-drivers/vimc/vimc-sensor.c
@@ -0,0 +1,453 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * vimc-sensor.c Virtual Media Controller Driver
+ *
+ * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
+ */
+
+#include <linux/v4l2-mediabus.h>
+#include <linux/vmalloc.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-subdev.h>
+#include <media/tpg/v4l2-tpg.h>
+
+#include "vimc-common.h"
+
+enum vimc_sensor_osd_mode {
+	VIMC_SENSOR_OSD_SHOW_ALL = 0,
+	VIMC_SENSOR_OSD_SHOW_COUNTERS = 1,
+	VIMC_SENSOR_OSD_SHOW_NONE = 2
+};
+
+struct vimc_sensor_device {
+	struct vimc_ent_device ved;
+	struct v4l2_subdev sd;
+	struct tpg_data tpg;
+	u8 *frame;
+	enum vimc_sensor_osd_mode osd_value;
+	u64 start_stream_ts;
+	/* The active format */
+	struct v4l2_mbus_framefmt mbus_format;
+	struct v4l2_ctrl_handler hdl;
+	struct media_pad pad;
+};
+
+static const struct v4l2_mbus_framefmt fmt_default = {
+	.width = 640,
+	.height = 480,
+	.code = MEDIA_BUS_FMT_RGB888_1X24,
+	.field = V4L2_FIELD_NONE,
+	.colorspace = V4L2_COLORSPACE_SRGB,
+};
+
+static int vimc_sensor_init_cfg(struct v4l2_subdev *sd,
+				struct v4l2_subdev_state *sd_state)
+{
+	unsigned int i;
+
+	for (i = 0; i < sd->entity.num_pads; i++) {
+		struct v4l2_mbus_framefmt *mf;
+
+		mf = v4l2_subdev_get_try_format(sd, sd_state, i);
+		*mf = fmt_default;
+	}
+
+	return 0;
+}
+
+static int vimc_sensor_enum_mbus_code(struct v4l2_subdev *sd,
+				      struct v4l2_subdev_state *sd_state,
+				      struct v4l2_subdev_mbus_code_enum *code)
+{
+	u32 mbus_code = vimc_mbus_code_by_index(code->index);
+
+	if (!mbus_code)
+		return -EINVAL;
+
+	code->code = mbus_code;
+
+	return 0;
+}
+
+static int vimc_sensor_enum_frame_size(struct v4l2_subdev *sd,
+				       struct v4l2_subdev_state *sd_state,
+				       struct v4l2_subdev_frame_size_enum *fse)
+{
+	const struct vimc_pix_map *vpix;
+
+	if (fse->index)
+		return -EINVAL;
+
+	/* Only accept code in the pix map table */
+	vpix = vimc_pix_map_by_code(fse->code);
+	if (!vpix)
+		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_sensor_get_fmt(struct v4l2_subdev *sd,
+			       struct v4l2_subdev_state *sd_state,
+			       struct v4l2_subdev_format *fmt)
+{
+	struct vimc_sensor_device *vsensor =
+				container_of(sd, struct vimc_sensor_device, sd);
+
+	fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
+		      *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) :
+		      vsensor->mbus_format;
+
+	return 0;
+}
+
+static void vimc_sensor_tpg_s_format(struct vimc_sensor_device *vsensor)
+{
+	const struct vimc_pix_map *vpix =
+				vimc_pix_map_by_code(vsensor->mbus_format.code);
+
+	tpg_reset_source(&vsensor->tpg, vsensor->mbus_format.width,
+			 vsensor->mbus_format.height, vsensor->mbus_format.field);
+	tpg_s_bytesperline(&vsensor->tpg, 0, vsensor->mbus_format.width * vpix->bpp);
+	tpg_s_buf_height(&vsensor->tpg, vsensor->mbus_format.height);
+	tpg_s_fourcc(&vsensor->tpg, vpix->pixelformat);
+	/* TODO: add support for V4L2_FIELD_ALTERNATE */
+	tpg_s_field(&vsensor->tpg, vsensor->mbus_format.field, false);
+	tpg_s_colorspace(&vsensor->tpg, vsensor->mbus_format.colorspace);
+	tpg_s_ycbcr_enc(&vsensor->tpg, vsensor->mbus_format.ycbcr_enc);
+	tpg_s_quantization(&vsensor->tpg, vsensor->mbus_format.quantization);
+	tpg_s_xfer_func(&vsensor->tpg, vsensor->mbus_format.xfer_func);
+}
+
+static void vimc_sensor_adjust_fmt(struct v4l2_mbus_framefmt *fmt)
+{
+	const struct vimc_pix_map *vpix;
+
+	/* Only accept code in the pix map table */
+	vpix = vimc_pix_map_by_code(fmt->code);
+	if (!vpix)
+		fmt->code = 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;
+
+	/* TODO: add support for V4L2_FIELD_ALTERNATE */
+	if (fmt->field == V4L2_FIELD_ANY || fmt->field == V4L2_FIELD_ALTERNATE)
+		fmt->field = fmt_default.field;
+
+	vimc_colorimetry_clamp(fmt);
+}
+
+static int vimc_sensor_set_fmt(struct v4l2_subdev *sd,
+			       struct v4l2_subdev_state *sd_state,
+			       struct v4l2_subdev_format *fmt)
+{
+	struct vimc_sensor_device *vsensor = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *mf;
+
+	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+		/* Do not change the format while stream is on */
+		if (vsensor->frame)
+			return -EBUSY;
+
+		mf = &vsensor->mbus_format;
+	} else {
+		mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+	}
+
+	/* Set the new format */
+	vimc_sensor_adjust_fmt(&fmt->format);
+
+	dev_dbg(vsensor->ved.dev, "%s: format update: "
+		"old:%dx%d (0x%x, %d, %d, %d, %d) "
+		"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vsensor->sd.name,
+		/* old */
+		mf->width, mf->height, mf->code,
+		mf->colorspace,	mf->quantization,
+		mf->xfer_func, mf->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);
+
+	*mf = fmt->format;
+
+	return 0;
+}
+
+static const struct v4l2_subdev_pad_ops vimc_sensor_pad_ops = {
+	.init_cfg		= vimc_sensor_init_cfg,
+	.enum_mbus_code		= vimc_sensor_enum_mbus_code,
+	.enum_frame_size	= vimc_sensor_enum_frame_size,
+	.get_fmt		= vimc_sensor_get_fmt,
+	.set_fmt		= vimc_sensor_set_fmt,
+};
+
+static void *vimc_sensor_process_frame(struct vimc_ent_device *ved,
+				       const void *sink_frame)
+{
+	struct vimc_sensor_device *vsensor =
+		container_of(ved, struct vimc_sensor_device, ved);
+
+	const unsigned int line_height = 16;
+	u8 *basep[TPG_MAX_PLANES][2];
+	unsigned int line = 1;
+	char str[100];
+
+	tpg_fill_plane_buffer(&vsensor->tpg, 0, 0, vsensor->frame);
+	tpg_calc_text_basep(&vsensor->tpg, basep, 0, vsensor->frame);
+	switch (vsensor->osd_value) {
+	case VIMC_SENSOR_OSD_SHOW_ALL: {
+		const char *order = tpg_g_color_order(&vsensor->tpg);
+
+		tpg_gen_text(&vsensor->tpg, basep, line++ * line_height,
+			     16, order);
+		snprintf(str, sizeof(str),
+			 "brightness %3d, contrast %3d, saturation %3d, hue %d ",
+			 vsensor->tpg.brightness,
+			 vsensor->tpg.contrast,
+			 vsensor->tpg.saturation,
+			 vsensor->tpg.hue);
+		tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str);
+		snprintf(str, sizeof(str), "sensor size: %dx%d",
+			 vsensor->mbus_format.width,
+			 vsensor->mbus_format.height);
+		tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str);
+		fallthrough;
+	}
+	case VIMC_SENSOR_OSD_SHOW_COUNTERS: {
+		unsigned int ms;
+
+		ms = div_u64(ktime_get_ns() - vsensor->start_stream_ts, 1000000);
+		snprintf(str, sizeof(str), "%02d:%02d:%02d:%03d",
+			 (ms / (60 * 60 * 1000)) % 24,
+			 (ms / (60 * 1000)) % 60,
+			 (ms / 1000) % 60,
+			 ms % 1000);
+		tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str);
+		break;
+	}
+	case VIMC_SENSOR_OSD_SHOW_NONE:
+	default:
+		break;
+	}
+
+	return vsensor->frame;
+}
+
+static int vimc_sensor_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct vimc_sensor_device *vsensor =
+				container_of(sd, struct vimc_sensor_device, sd);
+
+	if (enable) {
+		const struct vimc_pix_map *vpix;
+		unsigned int frame_size;
+
+		vsensor->start_stream_ts = ktime_get_ns();
+
+		/* Calculate the frame size */
+		vpix = vimc_pix_map_by_code(vsensor->mbus_format.code);
+		frame_size = vsensor->mbus_format.width * vpix->bpp *
+			     vsensor->mbus_format.height;
+
+		/*
+		 * Allocate the frame buffer. Use vmalloc to be able to
+		 * allocate a large amount of memory
+		 */
+		vsensor->frame = vmalloc(frame_size);
+		if (!vsensor->frame)
+			return -ENOMEM;
+
+		/* configure the test pattern generator */
+		vimc_sensor_tpg_s_format(vsensor);
+
+	} else {
+
+		vfree(vsensor->frame);
+		vsensor->frame = NULL;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops vimc_sensor_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_sensor_video_ops = {
+	.s_stream = vimc_sensor_s_stream,
+};
+
+static const struct v4l2_subdev_ops vimc_sensor_ops = {
+	.core = &vimc_sensor_core_ops,
+	.pad = &vimc_sensor_pad_ops,
+	.video = &vimc_sensor_video_ops,
+};
+
+static int vimc_sensor_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct vimc_sensor_device *vsensor =
+		container_of(ctrl->handler, struct vimc_sensor_device, hdl);
+
+	switch (ctrl->id) {
+	case VIMC_CID_TEST_PATTERN:
+		tpg_s_pattern(&vsensor->tpg, ctrl->val);
+		break;
+	case V4L2_CID_HFLIP:
+		tpg_s_hflip(&vsensor->tpg, ctrl->val);
+		break;
+	case V4L2_CID_VFLIP:
+		tpg_s_vflip(&vsensor->tpg, ctrl->val);
+		break;
+	case V4L2_CID_BRIGHTNESS:
+		tpg_s_brightness(&vsensor->tpg, ctrl->val);
+		break;
+	case V4L2_CID_CONTRAST:
+		tpg_s_contrast(&vsensor->tpg, ctrl->val);
+		break;
+	case V4L2_CID_HUE:
+		tpg_s_hue(&vsensor->tpg, ctrl->val);
+		break;
+	case V4L2_CID_SATURATION:
+		tpg_s_saturation(&vsensor->tpg, ctrl->val);
+		break;
+	case VIMC_CID_OSD_TEXT_MODE:
+		vsensor->osd_value = ctrl->val;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static const struct v4l2_ctrl_ops vimc_sensor_ctrl_ops = {
+	.s_ctrl = vimc_sensor_s_ctrl,
+};
+
+static void vimc_sensor_release(struct vimc_ent_device *ved)
+{
+	struct vimc_sensor_device *vsensor =
+		container_of(ved, struct vimc_sensor_device, ved);
+
+	v4l2_ctrl_handler_free(&vsensor->hdl);
+	tpg_free(&vsensor->tpg);
+	media_entity_cleanup(vsensor->ved.ent);
+	kfree(vsensor);
+}
+
+/* Image Processing Controls */
+static const struct v4l2_ctrl_config vimc_sensor_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_sensor_ctrl_test_pattern = {
+	.ops = &vimc_sensor_ctrl_ops,
+	.id = VIMC_CID_TEST_PATTERN,
+	.name = "Test Pattern",
+	.type = V4L2_CTRL_TYPE_MENU,
+	.max = TPG_PAT_NOISE,
+	.qmenu = tpg_pattern_strings,
+};
+
+static const char * const vimc_ctrl_osd_mode_strings[] = {
+	"All",
+	"Counters Only",
+	"None",
+	NULL,
+};
+
+static const struct v4l2_ctrl_config vimc_sensor_ctrl_osd_mode = {
+	.ops = &vimc_sensor_ctrl_ops,
+	.id = VIMC_CID_OSD_TEXT_MODE,
+	.name = "Show Information",
+	.type = V4L2_CTRL_TYPE_MENU,
+	.max = ARRAY_SIZE(vimc_ctrl_osd_mode_strings) - 2,
+	.qmenu = vimc_ctrl_osd_mode_strings,
+};
+
+static struct vimc_ent_device *vimc_sensor_add(struct vimc_device *vimc,
+					       const char *vcfg_name)
+{
+	struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
+	struct vimc_sensor_device *vsensor;
+	int ret;
+
+	/* Allocate the vsensor struct */
+	vsensor = kzalloc(sizeof(*vsensor), GFP_KERNEL);
+	if (!vsensor)
+		return ERR_PTR(-ENOMEM);
+
+	v4l2_ctrl_handler_init(&vsensor->hdl, 4);
+
+	v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_class, NULL);
+	v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_test_pattern, NULL);
+	v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_osd_mode, NULL);
+	v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
+			  V4L2_CID_VFLIP, 0, 1, 1, 0);
+	v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
+			  V4L2_CID_HFLIP, 0, 1, 1, 0);
+	v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
+			  V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
+	v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
+			  V4L2_CID_CONTRAST, 0, 255, 1, 128);
+	v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
+			  V4L2_CID_HUE, -128, 127, 1, 0);
+	v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
+			  V4L2_CID_SATURATION, 0, 255, 1, 128);
+	vsensor->sd.ctrl_handler = &vsensor->hdl;
+	if (vsensor->hdl.error) {
+		ret = vsensor->hdl.error;
+		goto err_free_vsensor;
+	}
+
+	/* Initialize the test pattern generator */
+	tpg_init(&vsensor->tpg, vsensor->mbus_format.width,
+		 vsensor->mbus_format.height);
+	ret = tpg_alloc(&vsensor->tpg, VIMC_FRAME_MAX_WIDTH);
+	if (ret)
+		goto err_free_hdl;
+
+	/* Initialize ved and sd */
+	vsensor->pad.flags = MEDIA_PAD_FL_SOURCE;
+	ret = vimc_ent_sd_register(&vsensor->ved, &vsensor->sd, v4l2_dev,
+				   vcfg_name,
+				   MEDIA_ENT_F_CAM_SENSOR, 1, &vsensor->pad,
+				   &vimc_sensor_ops);
+	if (ret)
+		goto err_free_tpg;
+
+	vsensor->ved.process_frame = vimc_sensor_process_frame;
+	vsensor->ved.dev = vimc->mdev.dev;
+
+	/* Initialize the frame format */
+	vsensor->mbus_format = fmt_default;
+
+	return &vsensor->ved;
+
+err_free_tpg:
+	tpg_free(&vsensor->tpg);
+err_free_hdl:
+	v4l2_ctrl_handler_free(&vsensor->hdl);
+err_free_vsensor:
+	kfree(vsensor);
+
+	return ERR_PTR(ret);
+}
+
+struct vimc_ent_type vimc_sensor_type = {
+	.add = vimc_sensor_add,
+	.release = vimc_sensor_release
+};