diff options
Diffstat (limited to 'drivers/media/video/sh_mobile_ceu_camera.c')
| -rw-r--r-- | drivers/media/video/sh_mobile_ceu_camera.c | 617 |
1 files changed, 317 insertions, 300 deletions
diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c index 1ad980f8e770..961bfa2fea97 100644 --- a/drivers/media/video/sh_mobile_ceu_camera.c +++ b/drivers/media/video/sh_mobile_ceu_camera.c @@ -115,9 +115,20 @@ struct sh_mobile_ceu_dev { }; struct sh_mobile_ceu_cam { - struct v4l2_rect ceu_rect; - unsigned int cam_width; - unsigned int cam_height; + /* CEU offsets within scaled by the CEU camera output */ + unsigned int ceu_left; + unsigned int ceu_top; + /* Client output, as seen by the CEU */ + unsigned int width; + unsigned int height; + /* + * User window from S_CROP / G_CROP, produced by client cropping and + * scaling, CEU scaling and CEU cropping, mapped back onto the client + * input window + */ + struct v4l2_rect subrect; + /* Camera cropping rectangle */ + struct v4l2_rect rect; const struct soc_mbus_pixelfmt *extra_fmt; enum v4l2_mbus_pixelcode code; }; @@ -213,8 +224,8 @@ static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, *count = 2; if (pcdev->video_limit) { - while (PAGE_ALIGN(*size) * *count > pcdev->video_limit) - (*count)--; + if (PAGE_ALIGN(*size) * *count > pcdev->video_limit) + *count = pcdev->video_limit / PAGE_ALIGN(*size); } dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size); @@ -565,38 +576,36 @@ static u16 calc_scale(unsigned int src, unsigned int *dst) } /* rect is guaranteed to not exceed the scaled camera rectangle */ -static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd, - unsigned int out_width, - unsigned int out_height) +static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct v4l2_rect *rect = &cam->ceu_rect; struct sh_mobile_ceu_dev *pcdev = ici->priv; unsigned int height, width, cdwdr_width, in_width, in_height; unsigned int left_offset, top_offset; u32 camor; - dev_dbg(icd->dev.parent, "Crop %ux%u@%u:%u\n", - rect->width, rect->height, rect->left, rect->top); + dev_geo(icd->dev.parent, "Crop %ux%u@%u:%u\n", + icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); - left_offset = rect->left; - top_offset = rect->top; + left_offset = cam->ceu_left; + top_offset = cam->ceu_top; + /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ if (pcdev->image_mode) { - in_width = rect->width; + in_width = cam->width; if (!pcdev->is_16bit) { in_width *= 2; left_offset *= 2; } - width = out_width; - cdwdr_width = out_width; + width = icd->user_width; + cdwdr_width = icd->user_width; } else { - int bytes_per_line = soc_mbus_bytes_per_line(out_width, + int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, icd->current_fmt->host_fmt); unsigned int w_factor; - width = out_width; + width = icd->user_width; switch (icd->current_fmt->host_fmt->packing) { case SOC_MBUS_PACKING_2X8_PADHI: @@ -606,17 +615,17 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd, w_factor = 1; } - in_width = rect->width * w_factor; + in_width = cam->width * w_factor; left_offset = left_offset * w_factor; if (bytes_per_line < 0) - cdwdr_width = out_width; + cdwdr_width = icd->user_width; else cdwdr_width = bytes_per_line; } - height = out_height; - in_height = rect->height; + height = icd->user_height; + in_height = cam->height; if (V4L2_FIELD_NONE != pcdev->field) { height /= 2; in_height /= 2; @@ -775,9 +784,10 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, } ceu_write(pcdev, CAIFR, value); - sh_mobile_ceu_set_rect(icd, icd->user_width, icd->user_height); + sh_mobile_ceu_set_rect(icd); mdelay(1); + dev_geo(icd->dev.parent, "CFLCR 0x%x\n", pcdev->cflcr); ceu_write(pcdev, CFLCR, pcdev->cflcr); /* @@ -866,7 +876,9 @@ static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) fmt->packing == SOC_MBUS_PACKING_EXTEND16); } -static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, +static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); + +static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, struct soc_camera_format_xlate *xlate) { struct v4l2_subdev *sd = soc_camera_to_subdev(icd); @@ -885,7 +897,7 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, fmt = soc_mbus_get_fmtdesc(code); if (!fmt) { dev_err(icd->dev.parent, - "Invalid format code #%d: %d\n", idx, code); + "Invalid format code #%u: %d\n", idx, code); return -EINVAL; } @@ -894,10 +906,55 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, return 0; if (!icd->host_priv) { + struct v4l2_mbus_framefmt mf; + struct v4l2_rect rect; + struct device *dev = icd->dev.parent; + int shift = 0; + + /* FIXME: subwindow is lost between close / open */ + + /* Cache current client geometry */ + ret = client_g_rect(sd, &rect); + if (ret < 0) + return ret; + + /* First time */ + ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); + if (ret < 0) + return ret; + + while ((mf.width > 2560 || mf.height > 1920) && shift < 4) { + /* Try 2560x1920, 1280x960, 640x480, 320x240 */ + mf.width = 2560 >> shift; + mf.height = 1920 >> shift; + ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); + if (ret < 0) + return ret; + shift++; + } + + if (shift == 4) { + dev_err(dev, "Failed to configure the client below %ux%x\n", + mf.width, mf.height); + return -EIO; + } + + dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); + cam = kzalloc(sizeof(*cam), GFP_KERNEL); if (!cam) return -ENOMEM; + /* We are called with current camera crop, initialise subrect with it */ + cam->rect = rect; + cam->subrect = rect; + + cam->width = mf.width; + cam->height = mf.height; + + cam->width = mf.width; + cam->height = mf.height; + icd->host_priv = cam; } else { cam = icd->host_priv; @@ -979,16 +1036,12 @@ static unsigned int scale_down(unsigned int size, unsigned int scale) return (size * 4096 + scale / 2) / scale; } -static unsigned int scale_up(unsigned int size, unsigned int scale) -{ - return (size * scale + 2048) / 4096; -} - static unsigned int calc_generic_scale(unsigned int input, unsigned int output) { return (input * 4096 + output / 2) / output; } +/* Get and store current client crop */ static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) { struct v4l2_crop crop; @@ -1007,25 +1060,51 @@ static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; ret = v4l2_subdev_call(sd, video, cropcap, &cap); - if (ret < 0) - return ret; - - *rect = cap.defrect; + if (!ret) + *rect = cap.defrect; return ret; } +/* Client crop has changed, update our sub-rectangle to remain within the area */ +static void update_subrect(struct sh_mobile_ceu_cam *cam) +{ + struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; + + if (rect->width < subrect->width) + subrect->width = rect->width; + + if (rect->height < subrect->height) + subrect->height = rect->height; + + if (rect->left > subrect->left) + subrect->left = rect->left; + else if (rect->left + rect->width > + subrect->left + subrect->width) + subrect->left = rect->left + rect->width - + subrect->width; + + if (rect->top > subrect->top) + subrect->top = rect->top; + else if (rect->top + rect->height > + subrect->top + subrect->height) + subrect->top = rect->top + rect->height - + subrect->height; +} + /* * The common for both scaling and cropping iterative approach is: * 1. try if the client can produce exactly what requested by the user * 2. if (1) failed, try to double the client image until we get one big enough * 3. if (2) failed, try to request the maximum image */ -static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, +static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, struct v4l2_crop *cam_crop) { + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; struct device *dev = sd->v4l2_dev->dev; + struct sh_mobile_ceu_cam *cam = icd->host_priv; struct v4l2_cropcap cap; int ret; unsigned int width, height; @@ -1041,13 +1120,14 @@ static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, */ if (!memcmp(rect, cam_rect, sizeof(*rect))) { /* Even if camera S_CROP failed, but camera rectangle matches */ - dev_dbg(dev, "Camera S_CROP successful for %ux%u@%u:%u\n", + dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", rect->width, rect->height, rect->left, rect->top); + cam->rect = *cam_rect; return 0; } /* Try to fix cropping, that camera hasn't managed to set */ - dev_geo(dev, "Fix camera S_CROP for %ux%u@%u:%u to %ux%u@%u:%u\n", + dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", cam_rect->width, cam_rect->height, cam_rect->left, cam_rect->top, rect->width, rect->height, rect->left, rect->top); @@ -1057,6 +1137,7 @@ static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, if (ret < 0) return ret; + /* Put user requested rectangle within sensor bounds */ soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, cap.bounds.width); soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, @@ -1069,6 +1150,10 @@ static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, width = max(cam_rect->width, 2); height = max(cam_rect->height, 2); + /* + * Loop as long as sensor is not covering the requested rectangle and + * is still within its bounds + */ while (!ret && (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) && (cap.bounds.width > width || cap.bounds.height > height)) { @@ -1086,6 +1171,7 @@ static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, * target left, set it to the middle point between the current * left and minimum left. But that would add too much * complexity: we would have to iterate each border separately. + * Instead we just drop to the left and top bounds. */ if (cam_rect->left > rect->left) cam_rect->left = cap.bounds.left; @@ -1103,7 +1189,7 @@ static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, v4l2_subdev_call(sd, video, s_crop, cam_crop); ret = client_g_rect(sd, cam_rect); - dev_geo(dev, "Camera S_CROP %d for %ux%u@%u:%u\n", ret, + dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, cam_rect->width, cam_rect->height, cam_rect->left, cam_rect->top); } @@ -1117,82 +1203,24 @@ static int client_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *crop, *cam_rect = cap.bounds; v4l2_subdev_call(sd, video, s_crop, cam_crop); ret = client_g_rect(sd, cam_rect); - dev_geo(dev, "Camera S_CROP %d for max %ux%u@%u:%u\n", ret, + dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, cam_rect->width, cam_rect->height, cam_rect->left, cam_rect->top); } - return ret; -} - -static int get_camera_scales(struct v4l2_subdev *sd, struct v4l2_rect *rect, - unsigned int *scale_h, unsigned int *scale_v) -{ - struct v4l2_mbus_framefmt mf; - int ret; - - ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); - if (ret < 0) - return ret; - - *scale_h = calc_generic_scale(rect->width, mf.width); - *scale_v = calc_generic_scale(rect->height, mf.height); - - return 0; -} - -static int get_camera_subwin(struct soc_camera_device *icd, - struct v4l2_rect *cam_subrect, - unsigned int cam_hscale, unsigned int cam_vscale) -{ - struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct v4l2_rect *ceu_rect = &cam->ceu_rect; - - if (!ceu_rect->width) { - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - struct device *dev = icd->dev.parent; - struct v4l2_mbus_framefmt mf; - int ret; - /* First time */ - - ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); - if (ret < 0) - return ret; - - dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); - - if (mf.width > 2560) { - ceu_rect->width = 2560; - ceu_rect->left = (mf.width - 2560) / 2; - } else { - ceu_rect->width = mf.width; - ceu_rect->left = 0; - } - - if (mf.height > 1920) { - ceu_rect->height = 1920; - ceu_rect->top = (mf.height - 1920) / 2; - } else { - ceu_rect->height = mf.height; - ceu_rect->top = 0; - } - - dev_geo(dev, "initialised CEU rect %ux%u@%u:%u\n", - ceu_rect->width, ceu_rect->height, - ceu_rect->left, ceu_rect->top); + if (!ret) { + cam->rect = *cam_rect; + update_subrect(cam); } - cam_subrect->width = scale_up(ceu_rect->width, cam_hscale); - cam_subrect->left = scale_up(ceu_rect->left, cam_hscale); - cam_subrect->height = scale_up(ceu_rect->height, cam_vscale); - cam_subrect->top = scale_up(ceu_rect->top, cam_vscale); - - return 0; + return ret; } +/* Iterative s_mbus_fmt, also updates cached client crop on success */ static int client_s_fmt(struct soc_camera_device *icd, struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) { + struct sh_mobile_ceu_cam *cam = icd->host_priv; struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct device *dev = icd->dev.parent; unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; @@ -1200,6 +1228,15 @@ static int client_s_fmt(struct soc_camera_device *icd, struct v4l2_cropcap cap; int ret; + ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); + if (ret < 0) + return ret; + + dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); + + if ((width == mf->width && height == mf->height) || !ceu_can_scale) + goto update_cache; + cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; ret = v4l2_subdev_call(sd, video, cropcap, &cap); @@ -1209,15 +1246,6 @@ static int client_s_fmt(struct soc_camera_device *icd, max_width = min(cap.bounds.width, 2560); max_height = min(cap.bounds.height, 1920); - ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf); - if (ret < 0) - return ret; - - dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); - - if ((width == mf->width && height == mf->height) || !ceu_can_scale) - return 0; - /* Camera set a format, but geometry is not precise, try to improve */ tmp_w = mf->width; tmp_h = mf->height; @@ -1239,26 +1267,37 @@ static int client_s_fmt(struct soc_camera_device *icd, } } +update_cache: + /* Update cache */ + ret = client_g_rect(sd, &cam->rect); + if (ret < 0) + return ret; + + update_subrect(cam); + return 0; } /** - * @rect - camera cropped rectangle - * @sub_rect - CEU cropped rectangle, mapped back to camera input area - * @ceu_rect - on output calculated CEU crop rectangle + * @width - on output: user width, mapped back to input + * @height - on output: user height, mapped back to input + * @mf - in- / output camera output window */ -static int client_scale(struct soc_camera_device *icd, struct v4l2_rect *rect, - struct v4l2_rect *sub_rect, struct v4l2_rect *ceu_rect, - struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) +static int client_scale(struct soc_camera_device *icd, + struct v4l2_mbus_framefmt *mf, + unsigned int *width, unsigned int *height, + bool ceu_can_scale) { - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct sh_mobile_ceu_cam *cam = icd->host_priv; struct device *dev = icd->dev.parent; struct v4l2_mbus_framefmt mf_tmp = *mf; unsigned int scale_h, scale_v; int ret; - /* 5. Apply iterative camera S_FMT for camera user window. */ + /* + * 5. Apply iterative camera S_FMT for camera user window (also updates + * client crop cache and the imaginary sub-rectangle). + */ ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); if (ret < 0) return ret; @@ -1270,60 +1309,22 @@ static int client_scale(struct soc_camera_device *icd, struct v4l2_rect *rect, /* unneeded - it is already in "mf_tmp" */ - /* 7. Calculate new camera scales. */ - ret = get_camera_scales(sd, rect, &scale_h, &scale_v); - if (ret < 0) - return ret; - - dev_geo(dev, "7: camera scales %u:%u\n", scale_h, scale_v); + /* 7. Calculate new client scales. */ + scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); + scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); - cam->cam_width = mf_tmp.width; - cam->cam_height = mf_tmp.height; mf->width = mf_tmp.width; mf->height = mf_tmp.height; mf->colorspace = mf_tmp.colorspace; /* * 8. Calculate new CEU crop - apply camera scales to previously - * calculated "effective" crop. + * updated "effective" crop. */ - ceu_rect->left = scale_down(sub_rect->left, scale_h); - ceu_rect->width = scale_down(sub_rect->width, scale_h); - ceu_rect->top = scale_down(sub_rect->top, scale_v); - ceu_rect->height = scale_down(sub_rect->height, scale_v); + *width = scale_down(cam->subrect.width, scale_h); + *height = scale_down(cam->subrect.height, scale_v); - dev_geo(dev, "8: new CEU rect %ux%u@%u:%u\n", - ceu_rect->width, ceu_rect->height, - ceu_rect->left, ceu_rect->top); - - return 0; -} - -/* Get combined scales */ -static int get_scales(struct soc_camera_device *icd, - unsigned int *scale_h, unsigned int *scale_v) -{ - struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - struct v4l2_crop cam_crop; - unsigned int width_in, height_in; - int ret; - - cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - - ret = client_g_rect(sd, &cam_crop.c); - if (ret < 0) - return ret; - - ret = get_camera_scales(sd, &cam_crop.c, scale_h, scale_v); - if (ret < 0) - return ret; - - width_in = scale_up(cam->ceu_rect.width, *scale_h); - height_in = scale_up(cam->ceu_rect.height, *scale_v); - - *scale_h = calc_generic_scale(width_in, icd->user_width); - *scale_v = calc_generic_scale(height_in, icd->user_height); + dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); return 0; } @@ -1342,115 +1343,165 @@ static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, struct sh_mobile_ceu_dev *pcdev = ici->priv; struct v4l2_crop cam_crop; struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct v4l2_rect *cam_rect = &cam_crop.c, *ceu_rect = &cam->ceu_rect; + struct v4l2_rect *cam_rect = &cam_crop.c; struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct device *dev = icd->dev.parent; struct v4l2_mbus_framefmt mf; - unsigned int scale_comb_h, scale_comb_v, scale_ceu_h, scale_ceu_v, - out_width, out_height; + unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, + out_width, out_height, scale_h, scale_v; + int interm_width, interm_height; u32 capsr, cflcr; int ret; - /* 1. Calculate current combined scales. */ - ret = get_scales(icd, &scale_comb_h, &scale_comb_v); - if (ret < 0) - return ret; + dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, + rect->left, rect->top); - dev_geo(dev, "1: combined scales %u:%u\n", scale_comb_h, scale_comb_v); + /* During camera cropping its output window can change too, stop CEU */ + capsr = capture_save_reset(pcdev); + dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); - /* 2. Apply iterative camera S_CROP for new input window. */ - ret = client_s_crop(sd, a, &cam_crop); + /* 1. - 2. Apply iterative camera S_CROP for new input window. */ + ret = client_s_crop(icd, a, &cam_crop); if (ret < 0) return ret; - dev_geo(dev, "2: camera cropped to %ux%u@%u:%u\n", + dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", cam_rect->width, cam_rect->height, cam_rect->left, cam_rect->top); /* On success cam_crop contains current camera crop */ - /* - * 3. If old combined scales applied to new crop produce an impossible - * user window, adjust scales to produce nearest possible window. - */ - out_width = scale_down(rect->width, scale_comb_h); - out_height = scale_down(rect->height, scale_comb_v); - - if (out_width > 2560) - out_width = 2560; - else if (out_width < 2) - out_width = 2; - - if (out_height > 1920) - out_height = 1920; - else if (out_height < 4) - out_height = 4; - - dev_geo(dev, "3: Adjusted output %ux%u\n", out_width, out_height); - - /* 4. Use G_CROP to retrieve actual input window: already in cam_crop */ - - /* - * 5. Using actual input window and calculated combined scales calculate - * camera target output window. - */ - mf.width = scale_down(cam_rect->width, scale_comb_h); - mf.height = scale_down(cam_rect->height, scale_comb_v); - - dev_geo(dev, "5: camera target %ux%u\n", mf.width, mf.height); - - /* 6. - 9. */ - mf.code = cam->code; - mf.field = pcdev->field; - - capsr = capture_save_reset(pcdev); - dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); + /* 3. Retrieve camera output window */ + ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); + if (ret < 0) + return ret; - /* Make relative to camera rectangle */ - rect->left -= cam_rect->left; - rect->top -= cam_rect->top; + if (mf.width > 2560 || mf.height > 1920) + return -EINVAL; - ret = client_scale(icd, cam_rect, rect, ceu_rect, &mf, - pcdev->image_mode && - V4L2_FIELD_NONE == pcdev->field); + /* Cache camera output window */ + cam->width = mf.width; + cam->height = mf.height; - dev_geo(dev, "6-9: %d\n", ret); + /* 4. Calculate camera scales */ + scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); + scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); - /* 10. Use CEU cropping to crop to the new window. */ - sh_mobile_ceu_set_rect(icd, out_width, out_height); + /* Calculate intermediate window */ + interm_width = scale_down(rect->width, scale_cam_h); + interm_height = scale_down(rect->height, scale_cam_v); - dev_geo(dev, "10: CEU cropped to %ux%u@%u:%u\n", - ceu_rect->width, ceu_rect->height, - ceu_rect->left, ceu_rect->top); + if (pcdev->image_mode) { + out_width = min(interm_width, icd->user_width); + out_height = min(interm_height, icd->user_height); + } else { + out_width = interm_width; + out_height = interm_height; + } /* - * 11. Calculate CEU scales from camera scales from results of (10) and - * user window from (3) + * 5. Calculate CEU scales from camera scales from results of (5) and + * the user window */ - scale_ceu_h = calc_scale(ceu_rect->width, &out_width); - scale_ceu_v = calc_scale(ceu_rect->height, &out_height); + scale_ceu_h = calc_scale(interm_width, &out_width); + scale_ceu_v = calc_scale(interm_height, &out_height); - dev_geo(dev, "11: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); + /* Calculate camera scales */ + scale_h = calc_generic_scale(cam_rect->width, out_width); + scale_v = calc_generic_scale(cam_rect->height, out_height); - /* 12. Apply CEU scales. */ + dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); + + /* Apply CEU scales. */ cflcr = scale_ceu_h | (scale_ceu_v << 16); if (cflcr != pcdev->cflcr) { pcdev->cflcr = cflcr; ceu_write(pcdev, CFLCR, cflcr); } + icd->user_width = out_width; + icd->user_height = out_height; + cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_h) & ~1; + cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_v) & ~1; + + /* 6. Use CEU cropping to crop to the new window. */ + sh_mobile_ceu_set_rect(icd); + + cam->subrect = *rect; + + dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", + icd->user_width, icd->user_height, + cam->ceu_left, cam->ceu_top); + /* Restore capture */ if (pcdev->active) capsr |= 1; capture_restore(pcdev, capsr); - icd->user_width = out_width; - icd->user_height = out_height; - /* Even if only camera cropping succeeded */ return ret; } +static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, + struct v4l2_crop *a) +{ + struct sh_mobile_ceu_cam *cam = icd->host_priv; + + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + a->c = cam->subrect; + + return 0; +} + +/* + * Calculate real client output window by applying new scales to the current + * client crop. New scales are calculated from the requested output format and + * CEU crop, mapped backed onto the client input (subrect). + */ +static void calculate_client_output(struct soc_camera_device *icd, + struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) +{ + struct sh_mobile_ceu_cam *cam = icd->host_priv; + struct device *dev = icd->dev.parent; + struct v4l2_rect *cam_subrect = &cam->subrect; + unsigned int scale_v, scale_h; + + if (cam_subrect->width == cam->rect.width && + cam_subrect->height == cam->rect.height) { + /* No sub-cropping */ + mf->width = pix->width; + mf->height = pix->height; + return; + } + + /* 1.-2. Current camera scales and subwin - cached. */ + + dev_geo(dev, "2: subwin %ux%u@%u:%u\n", + cam_subrect->width, cam_subrect->height, + cam_subrect->left, cam_subrect->top); + + /* + * 3. Calculate new combined scales from input sub-window to requested + * user window. + */ + + /* + * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF + * (128x96) or larger than VGA + */ + scale_h = calc_generic_scale(cam_subrect->width, pix->width); + scale_v = calc_generic_scale(cam_subrect->height, pix->height); + + dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); + + /* + * 4. Calculate client output window by applying combined scales to real + * input window. + */ + mf->width = scale_down(cam->rect.width, scale_h); + mf->height = scale_down(cam->rect.height, scale_v); +} + /* Similar to set_crop multistage iterative algorithm */ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, struct v4l2_format *f) @@ -1460,18 +1511,17 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, struct sh_mobile_ceu_cam *cam = icd->host_priv; struct v4l2_pix_format *pix = &f->fmt.pix; struct v4l2_mbus_framefmt mf; - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct device *dev = icd->dev.parent; __u32 pixfmt = pix->pixelformat; const struct soc_camera_format_xlate *xlate; - struct v4l2_crop cam_crop; - struct v4l2_rect *cam_rect = &cam_crop.c, cam_subrect, ceu_rect; - unsigned int scale_cam_h, scale_cam_v; + unsigned int ceu_sub_width, ceu_sub_height; u16 scale_v, scale_h; int ret; bool image_mode; enum v4l2_field field; + dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); + switch (pix->field) { default: pix->field = V4L2_FIELD_NONE; @@ -1492,46 +1542,8 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, return -EINVAL; } - /* 1. Calculate current camera scales. */ - cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - - ret = client_g_rect(sd, cam_rect); - if (ret < 0) - return ret; - - ret = get_camera_scales(sd, cam_rect, &scale_cam_h, &scale_cam_v); - if (ret < 0) - return ret; - - dev_geo(dev, "1: camera scales %u:%u\n", scale_cam_h, scale_cam_v); - - /* - * 2. Calculate "effective" input crop (sensor subwindow) - CEU crop - * scaled back at current camera scales onto input window. - */ - ret = get_camera_subwin(icd, &cam_subrect, scale_cam_h, scale_cam_v); - if (ret < 0) - return ret; - - dev_geo(dev, "2: subwin %ux%u@%u:%u\n", - cam_subrect.width, cam_subrect.height, - cam_subrect.left, cam_subrect.top); - - /* - * 3. Calculate new combined scales from "effective" input window to - * requested user window. - */ - scale_h = calc_generic_scale(cam_subrect.width, pix->width); - scale_v = calc_generic_scale(cam_subrect.height, pix->height); - - dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); - - /* - * 4. Calculate camera output window by applying combined scales to real - * input window. - */ - mf.width = scale_down(cam_rect->width, scale_h); - mf.height = scale_down(cam_rect->height, scale_v); + /* 1.-4. Calculate client output geometry */ + calculate_client_output(icd, &f->fmt.pix, &mf); mf.field = pix->field; mf.colorspace = pix->colorspace; mf.code = xlate->code; @@ -1547,17 +1559,17 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, image_mode = false; } - dev_geo(dev, "4: camera output %ux%u\n", mf.width, mf.height); + dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); /* 5. - 9. */ - ret = client_scale(icd, cam_rect, &cam_subrect, &ceu_rect, &mf, + ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, image_mode && V4L2_FIELD_NONE == field); - dev_geo(dev, "5-9: client scale %d\n", ret); + dev_geo(dev, "5-9: client scale return %d\n", ret); /* Done with the camera. Now see if we can improve the result */ - dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", + dev_geo(dev, "Camera %d fmt %ux%u, requested %ux%u\n", ret, mf.width, mf.height, pix->width, pix->height); if (ret < 0) return ret; @@ -1565,40 +1577,44 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, if (mf.code != xlate->code) return -EINVAL; + /* 9. Prepare CEU crop */ + cam->width = mf.width; + cam->height = mf.height; + /* 10. Use CEU scaling to scale to the requested user window. */ /* We cannot scale up */ - if (pix->width > mf.width) - pix->width = mf.width; - if (pix->width > ceu_rect.width) - pix->width = ceu_rect.width; + if (pix->width > ceu_sub_width) + ceu_sub_width = pix->width; - if (pix->height > mf.height) - pix->height = mf.height; - if (pix->height > ceu_rect.height) - pix->height = ceu_rect.height; + if (pix->height > ceu_sub_height) + ceu_sub_height = pix->height; pix->colorspace = mf.colorspace; if (image_mode) { /* Scale pix->{width x height} down to width x height */ - scale_h = calc_scale(ceu_rect.width, &pix->width); - scale_v = calc_scale(ceu_rect.height, &pix->height); - - pcdev->cflcr = scale_h | (scale_v << 16); + scale_h = calc_scale(ceu_sub_width, &pix->width); + scale_v = calc_scale(ceu_sub_height, &pix->height); } else { - pix->width = ceu_rect.width; - pix->height = ceu_rect.height; - scale_h = scale_v = 0; - pcdev->cflcr = 0; + pix->width = ceu_sub_width; + pix->height = ceu_sub_height; + scale_h = 0; + scale_v = 0; } + pcdev->cflcr = scale_h | (scale_v << 16); + + /* + * We have calculated CFLCR, the actual configuration will be performed + * in sh_mobile_ceu_set_bus_param() + */ + dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", - ceu_rect.width, scale_h, pix->width, - ceu_rect.height, scale_v, pix->height); + ceu_sub_width, scale_h, pix->width, + ceu_sub_height, scale_v, pix->height); cam->code = xlate->code; - cam->ceu_rect = ceu_rect; icd->current_fmt = xlate; pcdev->field = field; @@ -1820,6 +1836,7 @@ static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { .remove = sh_mobile_ceu_remove_device, .get_formats = sh_mobile_ceu_get_formats, .put_formats = sh_mobile_ceu_put_formats, + .get_crop = sh_mobile_ceu_get_crop, .set_crop = sh_mobile_ceu_set_crop, .set_fmt = sh_mobile_ceu_set_fmt, .try_fmt = sh_mobile_ceu_try_fmt, |