ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/media/platform/vimc/vimc-scaler.c b/marvell/linux/drivers/media/platform/vimc/vimc-scaler.c
new file mode 100644
index 0000000..c0d9f43
--- /dev/null
+++ b/marvell/linux/drivers/media/platform/vimc/vimc-scaler.c
@@ -0,0 +1,439 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * vimc-scaler.c Virtual Media Controller Driver
+ *
+ * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
+ */
+
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/vmalloc.h>
+#include <linux/v4l2-mediabus.h>
+#include <media/v4l2-subdev.h>
+
+#include "vimc-common.h"
+
+#define VIMC_SCA_DRV_NAME "vimc-scaler"
+
+static unsigned int sca_mult = 3;
+module_param(sca_mult, uint, 0000);
+MODULE_PARM_DESC(sca_mult, " the image size multiplier");
+
+#define IS_SINK(pad) (!pad)
+#define IS_SRC(pad) (pad)
+#define MAX_ZOOM 8
+
+struct vimc_sca_device {
+ struct vimc_ent_device ved;
+ struct v4l2_subdev sd;
+ struct device *dev;
+ /* NOTE: the source fmt is the same as the sink
+ * with the width and hight multiplied by mult
+ */
+ struct v4l2_mbus_framefmt sink_fmt;
+ /* Values calculated when the stream starts */
+ u8 *src_frame;
+ unsigned int src_line_size;
+ unsigned int bpp;
+};
+
+static const struct v4l2_mbus_framefmt sink_fmt_default = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_RGB888_1X24,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_DEFAULT,
+};
+
+static int vimc_sca_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg)
+{
+ 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->width = mf->width * sca_mult;
+ mf->height = mf->height * sca_mult;
+ }
+
+ return 0;
+}
+
+static int vimc_sca_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ const struct vimc_pix_map *vpix = vimc_pix_map_by_index(code->index);
+
+ /* We don't support bayer format */
+ if (!vpix || vpix->bayer)
+ return -EINVAL;
+
+ code->code = vpix->code;
+
+ return 0;
+}
+
+static int vimc_sca_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ 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 in non bayer format */
+ vpix = vimc_pix_map_by_code(fse->code);
+ if (!vpix || vpix->bayer)
+ return -EINVAL;
+
+ fse->min_width = VIMC_FRAME_MIN_WIDTH;
+ fse->min_height = VIMC_FRAME_MIN_HEIGHT;
+
+ if (IS_SINK(fse->pad)) {
+ fse->max_width = VIMC_FRAME_MAX_WIDTH;
+ fse->max_height = VIMC_FRAME_MAX_HEIGHT;
+ } else {
+ fse->max_width = VIMC_FRAME_MAX_WIDTH * MAX_ZOOM;
+ fse->max_height = VIMC_FRAME_MAX_HEIGHT * MAX_ZOOM;
+ }
+
+ return 0;
+}
+
+static int vimc_sca_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
+
+ /* Get the current sink format */
+ format->format = (format->which == V4L2_SUBDEV_FORMAT_TRY) ?
+ *v4l2_subdev_get_try_format(sd, cfg, 0) :
+ vsca->sink_fmt;
+
+ /* Scale the frame size for the source pad */
+ if (IS_SRC(format->pad)) {
+ format->format.width = vsca->sink_fmt.width * sca_mult;
+ format->format.height = vsca->sink_fmt.height * sca_mult;
+ }
+
+ return 0;
+}
+
+static void vimc_sca_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
+{
+ const struct vimc_pix_map *vpix;
+
+ /* Only accept code in the pix map table in non bayer format */
+ vpix = vimc_pix_map_by_code(fmt->code);
+ if (!vpix || vpix->bayer)
+ 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_sca_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *fmt)
+{
+ struct vimc_sca_device *vsca = 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 (vsca->src_frame)
+ return -EBUSY;
+
+ sink_fmt = &vsca->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 (IS_SRC(fmt->pad)) {
+ fmt->format = *sink_fmt;
+ fmt->format.width = sink_fmt->width * sca_mult;
+ fmt->format.height = sink_fmt->height * sca_mult;
+ } else {
+ /* Set the new format in the sink pad */
+ vimc_sca_adjust_sink_fmt(&fmt->format);
+
+ dev_dbg(vsca->dev, "%s: sink format update: "
+ "old:%dx%d (0x%x, %d, %d, %d, %d) "
+ "new:%dx%d (0x%x, %d, %d, %d, %d)\n", vsca->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_sca_pad_ops = {
+ .init_cfg = vimc_sca_init_cfg,
+ .enum_mbus_code = vimc_sca_enum_mbus_code,
+ .enum_frame_size = vimc_sca_enum_frame_size,
+ .get_fmt = vimc_sca_get_fmt,
+ .set_fmt = vimc_sca_set_fmt,
+};
+
+static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
+
+ if (enable) {
+ const struct vimc_pix_map *vpix;
+ unsigned int frame_size;
+
+ if (vsca->src_frame)
+ return 0;
+
+ /* Save the bytes per pixel of the sink */
+ vpix = vimc_pix_map_by_code(vsca->sink_fmt.code);
+ vsca->bpp = vpix->bpp;
+
+ /* Calculate the width in bytes of the src frame */
+ vsca->src_line_size = vsca->sink_fmt.width *
+ sca_mult * vsca->bpp;
+
+ /* Calculate the frame size of the source pad */
+ frame_size = vsca->src_line_size * vsca->sink_fmt.height *
+ sca_mult;
+
+ /* Allocate the frame buffer. Use vmalloc to be able to
+ * allocate a large amount of memory
+ */
+ vsca->src_frame = vmalloc(frame_size);
+ if (!vsca->src_frame)
+ return -ENOMEM;
+
+ } else {
+ if (!vsca->src_frame)
+ return 0;
+
+ vfree(vsca->src_frame);
+ vsca->src_frame = NULL;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops vimc_sca_video_ops = {
+ .s_stream = vimc_sca_s_stream,
+};
+
+static const struct v4l2_subdev_ops vimc_sca_ops = {
+ .pad = &vimc_sca_pad_ops,
+ .video = &vimc_sca_video_ops,
+};
+
+static void vimc_sca_fill_pix(u8 *const ptr,
+ const u8 *const pixel,
+ const unsigned int bpp)
+{
+ unsigned int i;
+
+ /* copy the pixel to the pointer */
+ for (i = 0; i < bpp; i++)
+ ptr[i] = pixel[i];
+}
+
+static void vimc_sca_scale_pix(const struct vimc_sca_device *const vsca,
+ const unsigned int lin, const unsigned int col,
+ const u8 *const sink_frame)
+{
+ unsigned int i, j, index;
+ const u8 *pixel;
+
+ /* Point to the pixel value in position (lin, col) in the sink frame */
+ index = VIMC_FRAME_INDEX(lin, col,
+ vsca->sink_fmt.width,
+ vsca->bpp);
+ pixel = &sink_frame[index];
+
+ dev_dbg(vsca->dev,
+ "sca: %s: --- scale_pix sink pos %dx%d, index %d ---\n",
+ vsca->sd.name, lin, col, index);
+
+ /* point to the place we are going to put the first pixel
+ * in the scaled src frame
+ */
+ index = VIMC_FRAME_INDEX(lin * sca_mult, col * sca_mult,
+ vsca->sink_fmt.width * sca_mult, vsca->bpp);
+
+ dev_dbg(vsca->dev, "sca: %s: scale_pix src pos %dx%d, index %d\n",
+ vsca->sd.name, lin * sca_mult, col * sca_mult, index);
+
+ /* Repeat this pixel mult times */
+ for (i = 0; i < sca_mult; i++) {
+ /* Iterate through each beginning of a
+ * pixel repetition in a line
+ */
+ for (j = 0; j < sca_mult * vsca->bpp; j += vsca->bpp) {
+ dev_dbg(vsca->dev,
+ "sca: %s: sca: scale_pix src pos %d\n",
+ vsca->sd.name, index + j);
+
+ /* copy the pixel to the position index + j */
+ vimc_sca_fill_pix(&vsca->src_frame[index + j],
+ pixel, vsca->bpp);
+ }
+
+ /* move the index to the next line */
+ index += vsca->src_line_size;
+ }
+}
+
+static void vimc_sca_fill_src_frame(const struct vimc_sca_device *const vsca,
+ const u8 *const sink_frame)
+{
+ unsigned int i, j;
+
+ /* Scale each pixel from the original sink frame */
+ /* TODO: implement scale down, only scale up is supported for now */
+ for (i = 0; i < vsca->sink_fmt.height; i++)
+ for (j = 0; j < vsca->sink_fmt.width; j++)
+ vimc_sca_scale_pix(vsca, i, j, sink_frame);
+}
+
+static void *vimc_sca_process_frame(struct vimc_ent_device *ved,
+ const void *sink_frame)
+{
+ struct vimc_sca_device *vsca = container_of(ved, struct vimc_sca_device,
+ ved);
+
+ /* If the stream in this node is not active, just return */
+ if (!vsca->src_frame)
+ return ERR_PTR(-EINVAL);
+
+ vimc_sca_fill_src_frame(vsca, sink_frame);
+
+ return vsca->src_frame;
+};
+
+static void vimc_sca_release(struct v4l2_subdev *sd)
+{
+ struct vimc_sca_device *vsca =
+ container_of(sd, struct vimc_sca_device, sd);
+
+ vimc_pads_cleanup(vsca->ved.pads);
+ kfree(vsca);
+}
+
+static const struct v4l2_subdev_internal_ops vimc_sca_int_ops = {
+ .release = vimc_sca_release,
+};
+
+static void vimc_sca_comp_unbind(struct device *comp, struct device *master,
+ void *master_data)
+{
+ struct vimc_ent_device *ved = dev_get_drvdata(comp);
+ struct vimc_sca_device *vsca = container_of(ved, struct vimc_sca_device,
+ ved);
+
+ vimc_ent_sd_unregister(ved, &vsca->sd);
+}
+
+
+static int vimc_sca_comp_bind(struct device *comp, struct device *master,
+ void *master_data)
+{
+ struct v4l2_device *v4l2_dev = master_data;
+ struct vimc_platform_data *pdata = comp->platform_data;
+ struct vimc_sca_device *vsca;
+ int ret;
+
+ /* Allocate the vsca struct */
+ vsca = kzalloc(sizeof(*vsca), GFP_KERNEL);
+ if (!vsca)
+ return -ENOMEM;
+
+ /* Initialize ved and sd */
+ ret = vimc_ent_sd_register(&vsca->ved, &vsca->sd, v4l2_dev,
+ pdata->entity_name,
+ MEDIA_ENT_F_PROC_VIDEO_SCALER, 2,
+ (const unsigned long[2]) {MEDIA_PAD_FL_SINK,
+ MEDIA_PAD_FL_SOURCE},
+ &vimc_sca_int_ops, &vimc_sca_ops);
+ if (ret) {
+ kfree(vsca);
+ return ret;
+ }
+
+ vsca->ved.process_frame = vimc_sca_process_frame;
+ dev_set_drvdata(comp, &vsca->ved);
+ vsca->dev = comp;
+
+ /* Initialize the frame format */
+ vsca->sink_fmt = sink_fmt_default;
+
+ return 0;
+}
+
+static const struct component_ops vimc_sca_comp_ops = {
+ .bind = vimc_sca_comp_bind,
+ .unbind = vimc_sca_comp_unbind,
+};
+
+static int vimc_sca_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &vimc_sca_comp_ops);
+}
+
+static int vimc_sca_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &vimc_sca_comp_ops);
+
+ return 0;
+}
+
+static const struct platform_device_id vimc_sca_driver_ids[] = {
+ {
+ .name = VIMC_SCA_DRV_NAME,
+ },
+ { }
+};
+
+static struct platform_driver vimc_sca_pdrv = {
+ .probe = vimc_sca_probe,
+ .remove = vimc_sca_remove,
+ .id_table = vimc_sca_driver_ids,
+ .driver = {
+ .name = VIMC_SCA_DRV_NAME,
+ },
+};
+
+module_platform_driver(vimc_sca_pdrv);
+
+MODULE_DEVICE_TABLE(platform, vimc_sca_driver_ids);
+
+MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Scaler");
+MODULE_AUTHOR("Helen Mae Koike Fornazier <helen.fornazier@gmail.com>");
+MODULE_LICENSE("GPL");