diff options
Diffstat (limited to 'drivers/media/platform/vimc/vimc-debayer.c')
| -rw-r--r-- | drivers/media/platform/vimc/vimc-debayer.c | 603 |
1 files changed, 0 insertions, 603 deletions
diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c deleted file mode 100644 index 77887f66f323..000000000000 --- a/drivers/media/platform/vimc/vimc-debayer.c +++ /dev/null @@ -1,603 +0,0 @@ -/* - * vimc-debayer.c Virtual Media Controller Driver - * - * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#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_DEB_DRV_NAME "vimc-debayer" - -static unsigned int deb_mean_win_size = 3; -module_param(deb_mean_win_size, uint, 0000); -MODULE_PARM_DESC(deb_mean_win_size, " the window size to calculate the mean.\n" - "NOTE: the window size need to be an odd number, as the main pixel " - "stays in the center of the window, otherwise the next odd number " - "is considered"); - -#define IS_SINK(pad) (!pad) -#define IS_SRC(pad) (pad) - -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; - struct device *dev; - /* 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; -}; - -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 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 (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 (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 (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 (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->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); - int ret; - - 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; - - /* Turn the stream on in the subdevices directly connected */ - ret = vimc_pipeline_s_stream(&vdeb->sd.entity, 1); - if (ret) { - vfree(vdeb->src_frame); - vdeb->src_frame = NULL; - return ret; - } - } else { - if (!vdeb->src_frame) - return 0; - - /* Disable streaming from the pipe */ - ret = vimc_pipeline_s_stream(&vdeb->sd.entity, 0); - if (ret) - return ret; - - vfree(vdeb->src_frame); - vdeb->src_frame = NULL; - } - - return 0; -} - -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 = { - .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 = deb_mean_win_size / 2; - - /* Sum the values of the colors in the mean window */ - - dev_dbg(vdeb->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->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->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->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->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, - struct media_pad *sink, - 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; - - 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); - } - - /* Propagate the frame through all source pads */ - for (i = 1; i < vdeb->sd.entity.num_pads; i++) { - struct media_pad *pad = &vdeb->sd.entity.pads[i]; - - vimc_propagate_frame(pad, vdeb->src_frame); - } -} - -static void vimc_deb_comp_unbind(struct device *comp, struct device *master, - void *master_data) -{ - struct vimc_ent_device *ved = dev_get_drvdata(comp); - struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device, - ved); - - vimc_ent_sd_unregister(ved, &vdeb->sd); - kfree(vdeb); -} - -static int vimc_deb_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_deb_device *vdeb; - int ret; - - /* Allocate the vdeb struct */ - vdeb = kzalloc(sizeof(*vdeb), GFP_KERNEL); - if (!vdeb) - return -ENOMEM; - - /* Initialize ved and sd */ - ret = vimc_ent_sd_register(&vdeb->ved, &vdeb->sd, v4l2_dev, - pdata->entity_name, - MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV, 2, - (const unsigned long[2]) {MEDIA_PAD_FL_SINK, - MEDIA_PAD_FL_SOURCE}, - &vimc_deb_ops); - if (ret) { - kfree(vdeb); - return ret; - } - - vdeb->ved.process_frame = vimc_deb_process_frame; - dev_set_drvdata(comp, &vdeb->ved); - vdeb->dev = comp; - - /* 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 0; -} - -static const struct component_ops vimc_deb_comp_ops = { - .bind = vimc_deb_comp_bind, - .unbind = vimc_deb_comp_unbind, -}; - -static int vimc_deb_probe(struct platform_device *pdev) -{ - return component_add(&pdev->dev, &vimc_deb_comp_ops); -} - -static int vimc_deb_remove(struct platform_device *pdev) -{ - component_del(&pdev->dev, &vimc_deb_comp_ops); - - return 0; -} - -static const struct platform_device_id vimc_deb_driver_ids[] = { - { - .name = VIMC_DEB_DRV_NAME, - }, - { } -}; - -static struct platform_driver vimc_deb_pdrv = { - .probe = vimc_deb_probe, - .remove = vimc_deb_remove, - .id_table = vimc_deb_driver_ids, - .driver = { - .name = VIMC_DEB_DRV_NAME, - }, -}; - -module_platform_driver(vimc_deb_pdrv); - -MODULE_DEVICE_TABLE(platform, vimc_deb_driver_ids); - -MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Debayer"); -MODULE_AUTHOR("Helen Mae Koike Fornazier <helen.fornazier@gmail.com>"); -MODULE_LICENSE("GPL"); |