// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* vimc-sensor.c Virtual Media Controller Driver
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*
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* Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
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*/
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#include <linux/v4l2-mediabus.h>
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#include <linux/vmalloc.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-subdev.h>
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#include <media/tpg/v4l2-tpg.h>
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#include "vimc-common.h"
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enum vimc_sen_osd_mode {
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VIMC_SEN_OSD_SHOW_ALL = 0,
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VIMC_SEN_OSD_SHOW_COUNTERS = 1,
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VIMC_SEN_OSD_SHOW_NONE = 2
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};
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struct vimc_sen_device {
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struct vimc_ent_device ved;
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struct v4l2_subdev sd;
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struct tpg_data tpg;
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u8 *frame;
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enum vimc_sen_osd_mode osd_value;
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u64 start_stream_ts;
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/* The active format */
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struct v4l2_mbus_framefmt mbus_format;
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struct v4l2_ctrl_handler hdl;
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struct media_pad pad;
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};
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static const struct v4l2_mbus_framefmt fmt_default = {
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.width = 640,
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.height = 480,
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.code = MEDIA_BUS_FMT_RGB888_1X24,
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.field = V4L2_FIELD_NONE,
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.colorspace = V4L2_COLORSPACE_SRGB,
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};
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static int vimc_sen_init_cfg(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg)
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{
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unsigned int i;
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for (i = 0; i < sd->entity.num_pads; i++) {
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struct v4l2_mbus_framefmt *mf;
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mf = v4l2_subdev_get_try_format(sd, cfg, i);
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*mf = fmt_default;
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}
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return 0;
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}
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static int vimc_sen_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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u32 mbus_code = vimc_mbus_code_by_index(code->index);
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if (!mbus_code)
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return -EINVAL;
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code->code = mbus_code;
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return 0;
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}
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static int vimc_sen_enum_frame_size(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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const struct vimc_pix_map *vpix;
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if (fse->index)
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return -EINVAL;
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/* Only accept code in the pix map table */
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vpix = vimc_pix_map_by_code(fse->code);
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if (!vpix)
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return -EINVAL;
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fse->min_width = VIMC_FRAME_MIN_WIDTH;
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fse->max_width = VIMC_FRAME_MAX_WIDTH;
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fse->min_height = VIMC_FRAME_MIN_HEIGHT;
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fse->max_height = VIMC_FRAME_MAX_HEIGHT;
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return 0;
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}
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static int vimc_sen_get_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vimc_sen_device *vsen =
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container_of(sd, struct vimc_sen_device, sd);
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fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
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*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) :
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vsen->mbus_format;
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return 0;
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}
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static void vimc_sen_tpg_s_format(struct vimc_sen_device *vsen)
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{
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const struct vimc_pix_map *vpix =
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vimc_pix_map_by_code(vsen->mbus_format.code);
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tpg_reset_source(&vsen->tpg, vsen->mbus_format.width,
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vsen->mbus_format.height, vsen->mbus_format.field);
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tpg_s_bytesperline(&vsen->tpg, 0, vsen->mbus_format.width * vpix->bpp);
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tpg_s_buf_height(&vsen->tpg, vsen->mbus_format.height);
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tpg_s_fourcc(&vsen->tpg, vpix->pixelformat);
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/* TODO: add support for V4L2_FIELD_ALTERNATE */
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tpg_s_field(&vsen->tpg, vsen->mbus_format.field, false);
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tpg_s_colorspace(&vsen->tpg, vsen->mbus_format.colorspace);
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tpg_s_ycbcr_enc(&vsen->tpg, vsen->mbus_format.ycbcr_enc);
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tpg_s_quantization(&vsen->tpg, vsen->mbus_format.quantization);
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tpg_s_xfer_func(&vsen->tpg, vsen->mbus_format.xfer_func);
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}
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static void vimc_sen_adjust_fmt(struct v4l2_mbus_framefmt *fmt)
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{
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const struct vimc_pix_map *vpix;
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/* Only accept code in the pix map table */
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vpix = vimc_pix_map_by_code(fmt->code);
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if (!vpix)
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fmt->code = fmt_default.code;
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fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
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VIMC_FRAME_MAX_WIDTH) & ~1;
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fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
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VIMC_FRAME_MAX_HEIGHT) & ~1;
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/* TODO: add support for V4L2_FIELD_ALTERNATE */
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if (fmt->field == V4L2_FIELD_ANY || fmt->field == V4L2_FIELD_ALTERNATE)
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fmt->field = fmt_default.field;
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vimc_colorimetry_clamp(fmt);
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}
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static int vimc_sen_set_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vimc_sen_device *vsen = v4l2_get_subdevdata(sd);
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struct v4l2_mbus_framefmt *mf;
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if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
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/* Do not change the format while stream is on */
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if (vsen->frame)
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return -EBUSY;
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mf = &vsen->mbus_format;
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} else {
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mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
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}
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/* Set the new format */
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vimc_sen_adjust_fmt(&fmt->format);
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dev_dbg(vsen->ved.dev, "%s: format update: "
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"old:%dx%d (0x%x, %d, %d, %d, %d) "
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"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vsen->sd.name,
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/* old */
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mf->width, mf->height, mf->code,
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mf->colorspace, mf->quantization,
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mf->xfer_func, mf->ycbcr_enc,
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/* new */
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fmt->format.width, fmt->format.height, fmt->format.code,
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fmt->format.colorspace, fmt->format.quantization,
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fmt->format.xfer_func, fmt->format.ycbcr_enc);
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*mf = fmt->format;
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return 0;
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}
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static const struct v4l2_subdev_pad_ops vimc_sen_pad_ops = {
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.init_cfg = vimc_sen_init_cfg,
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.enum_mbus_code = vimc_sen_enum_mbus_code,
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.enum_frame_size = vimc_sen_enum_frame_size,
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.get_fmt = vimc_sen_get_fmt,
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.set_fmt = vimc_sen_set_fmt,
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};
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static void *vimc_sen_process_frame(struct vimc_ent_device *ved,
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const void *sink_frame)
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{
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struct vimc_sen_device *vsen = container_of(ved, struct vimc_sen_device,
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ved);
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const unsigned int line_height = 16;
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u8 *basep[TPG_MAX_PLANES][2];
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unsigned int line = 1;
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char str[100];
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tpg_fill_plane_buffer(&vsen->tpg, 0, 0, vsen->frame);
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tpg_calc_text_basep(&vsen->tpg, basep, 0, vsen->frame);
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switch (vsen->osd_value) {
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case VIMC_SEN_OSD_SHOW_ALL: {
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const char *order = tpg_g_color_order(&vsen->tpg);
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tpg_gen_text(&vsen->tpg, basep, line++ * line_height,
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16, order);
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snprintf(str, sizeof(str),
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"brightness %3d, contrast %3d, saturation %3d, hue %d ",
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vsen->tpg.brightness,
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vsen->tpg.contrast,
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vsen->tpg.saturation,
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vsen->tpg.hue);
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tpg_gen_text(&vsen->tpg, basep, line++ * line_height, 16, str);
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snprintf(str, sizeof(str), "sensor size: %dx%d",
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vsen->mbus_format.width,
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vsen->mbus_format.height);
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tpg_gen_text(&vsen->tpg, basep, line++ * line_height, 16, str);
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fallthrough;
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}
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case VIMC_SEN_OSD_SHOW_COUNTERS: {
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unsigned int ms;
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ms = div_u64(ktime_get_ns() - vsen->start_stream_ts, 1000000);
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snprintf(str, sizeof(str), "%02d:%02d:%02d:%03d",
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(ms / (60 * 60 * 1000)) % 24,
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(ms / (60 * 1000)) % 60,
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(ms / 1000) % 60,
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ms % 1000);
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tpg_gen_text(&vsen->tpg, basep, line++ * line_height, 16, str);
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break;
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}
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case VIMC_SEN_OSD_SHOW_NONE:
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default:
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break;
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}
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return vsen->frame;
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}
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static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct vimc_sen_device *vsen =
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container_of(sd, struct vimc_sen_device, sd);
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if (enable) {
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const struct vimc_pix_map *vpix;
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unsigned int frame_size;
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vsen->start_stream_ts = ktime_get_ns();
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/* Calculate the frame size */
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vpix = vimc_pix_map_by_code(vsen->mbus_format.code);
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frame_size = vsen->mbus_format.width * vpix->bpp *
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vsen->mbus_format.height;
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/*
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* Allocate the frame buffer. Use vmalloc to be able to
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* allocate a large amount of memory
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*/
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vsen->frame = vmalloc(frame_size);
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if (!vsen->frame)
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return -ENOMEM;
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/* configure the test pattern generator */
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vimc_sen_tpg_s_format(vsen);
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} else {
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vfree(vsen->frame);
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vsen->frame = NULL;
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}
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return 0;
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}
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static const struct v4l2_subdev_core_ops vimc_sen_core_ops = {
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.log_status = v4l2_ctrl_subdev_log_status,
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.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
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.unsubscribe_event = v4l2_event_subdev_unsubscribe,
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};
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static const struct v4l2_subdev_video_ops vimc_sen_video_ops = {
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.s_stream = vimc_sen_s_stream,
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};
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static const struct v4l2_subdev_ops vimc_sen_ops = {
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.core = &vimc_sen_core_ops,
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.pad = &vimc_sen_pad_ops,
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.video = &vimc_sen_video_ops,
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};
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static int vimc_sen_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct vimc_sen_device *vsen =
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container_of(ctrl->handler, struct vimc_sen_device, hdl);
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switch (ctrl->id) {
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case VIMC_CID_TEST_PATTERN:
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tpg_s_pattern(&vsen->tpg, ctrl->val);
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break;
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case V4L2_CID_HFLIP:
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tpg_s_hflip(&vsen->tpg, ctrl->val);
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break;
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case V4L2_CID_VFLIP:
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tpg_s_vflip(&vsen->tpg, ctrl->val);
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break;
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case V4L2_CID_BRIGHTNESS:
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tpg_s_brightness(&vsen->tpg, ctrl->val);
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break;
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case V4L2_CID_CONTRAST:
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tpg_s_contrast(&vsen->tpg, ctrl->val);
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break;
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case V4L2_CID_HUE:
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tpg_s_hue(&vsen->tpg, ctrl->val);
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break;
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case V4L2_CID_SATURATION:
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tpg_s_saturation(&vsen->tpg, ctrl->val);
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break;
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case VIMC_CID_OSD_TEXT_MODE:
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vsen->osd_value = ctrl->val;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct v4l2_ctrl_ops vimc_sen_ctrl_ops = {
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.s_ctrl = vimc_sen_s_ctrl,
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};
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static void vimc_sen_release(struct vimc_ent_device *ved)
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{
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struct vimc_sen_device *vsen =
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container_of(ved, struct vimc_sen_device, ved);
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v4l2_ctrl_handler_free(&vsen->hdl);
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tpg_free(&vsen->tpg);
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media_entity_cleanup(vsen->ved.ent);
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kfree(vsen);
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}
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/* Image Processing Controls */
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static const struct v4l2_ctrl_config vimc_sen_ctrl_class = {
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.flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY,
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.id = VIMC_CID_VIMC_CLASS,
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.name = "VIMC Controls",
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.type = V4L2_CTRL_TYPE_CTRL_CLASS,
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};
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static const struct v4l2_ctrl_config vimc_sen_ctrl_test_pattern = {
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.ops = &vimc_sen_ctrl_ops,
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.id = VIMC_CID_TEST_PATTERN,
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.name = "Test Pattern",
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.type = V4L2_CTRL_TYPE_MENU,
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.max = TPG_PAT_NOISE,
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.qmenu = tpg_pattern_strings,
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};
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static const char * const vimc_ctrl_osd_mode_strings[] = {
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"All",
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"Counters Only",
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"None",
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NULL,
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};
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static const struct v4l2_ctrl_config vimc_sen_ctrl_osd_mode = {
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.ops = &vimc_sen_ctrl_ops,
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.id = VIMC_CID_OSD_TEXT_MODE,
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.name = "Show Information",
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.type = V4L2_CTRL_TYPE_MENU,
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.max = ARRAY_SIZE(vimc_ctrl_osd_mode_strings) - 2,
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.qmenu = vimc_ctrl_osd_mode_strings,
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};
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static struct vimc_ent_device *vimc_sen_add(struct vimc_device *vimc,
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const char *vcfg_name)
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{
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struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
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struct vimc_sen_device *vsen;
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int ret;
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/* Allocate the vsen struct */
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vsen = kzalloc(sizeof(*vsen), GFP_KERNEL);
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if (!vsen)
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return ERR_PTR(-ENOMEM);
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v4l2_ctrl_handler_init(&vsen->hdl, 4);
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v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_class, NULL);
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v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_test_pattern, NULL);
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v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_osd_mode, NULL);
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v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
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V4L2_CID_VFLIP, 0, 1, 1, 0);
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v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
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V4L2_CID_HFLIP, 0, 1, 1, 0);
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v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
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V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
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v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
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V4L2_CID_CONTRAST, 0, 255, 1, 128);
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v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
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V4L2_CID_HUE, -128, 127, 1, 0);
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v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
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V4L2_CID_SATURATION, 0, 255, 1, 128);
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vsen->sd.ctrl_handler = &vsen->hdl;
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if (vsen->hdl.error) {
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ret = vsen->hdl.error;
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goto err_free_vsen;
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}
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/* Initialize the test pattern generator */
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tpg_init(&vsen->tpg, vsen->mbus_format.width,
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vsen->mbus_format.height);
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ret = tpg_alloc(&vsen->tpg, VIMC_FRAME_MAX_WIDTH);
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if (ret)
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goto err_free_hdl;
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/* Initialize ved and sd */
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vsen->pad.flags = MEDIA_PAD_FL_SOURCE;
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ret = vimc_ent_sd_register(&vsen->ved, &vsen->sd, v4l2_dev,
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vcfg_name,
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MEDIA_ENT_F_CAM_SENSOR, 1, &vsen->pad,
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&vimc_sen_ops);
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if (ret)
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goto err_free_tpg;
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vsen->ved.process_frame = vimc_sen_process_frame;
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vsen->ved.dev = vimc->mdev.dev;
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/* Initialize the frame format */
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vsen->mbus_format = fmt_default;
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return &vsen->ved;
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err_free_tpg:
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tpg_free(&vsen->tpg);
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err_free_hdl:
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v4l2_ctrl_handler_free(&vsen->hdl);
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err_free_vsen:
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kfree(vsen);
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return ERR_PTR(ret);
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}
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struct vimc_ent_type vimc_sen_type = {
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.add = vimc_sen_add,
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.release = vimc_sen_release
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};
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