From 38e423ee00b6138f8fafba60f2b6f4f3ebfeb1fa Mon Sep 17 00:00:00 2001 From: Hugues Fruchet Date: Tue, 22 Aug 2017 10:41:10 -0400 Subject: media: stm32-dcmi: cleanup variable/fields namings Uniformize "pixfmt" variables to "pix". Change "current_fmt" & "dcmi_fmt" variables to variables with "sd_" prefix to explicitly refer to subdev format. Signed-off-by: Hugues Fruchet Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/stm32/stm32-dcmi.c | 103 ++++++++++++++++-------------- 1 file changed, 54 insertions(+), 49 deletions(-) diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c index 1fe2d0f0f5de..7713c10e4769 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -132,9 +132,9 @@ struct stm32_dcmi { struct dcmi_graph_entity entity; struct v4l2_format fmt; - const struct dcmi_format **user_formats; - unsigned int num_user_formats; - const struct dcmi_format *current_fmt; + const struct dcmi_format **sd_formats; + unsigned int num_of_sd_formats; + const struct dcmi_format *sd_format; /* Protect this data structure */ struct mutex lock; @@ -684,12 +684,12 @@ static int dcmi_g_fmt_vid_cap(struct file *file, void *priv, static const struct dcmi_format *find_format_by_fourcc(struct stm32_dcmi *dcmi, unsigned int fourcc) { - unsigned int num_formats = dcmi->num_user_formats; + unsigned int num_formats = dcmi->num_of_sd_formats; const struct dcmi_format *fmt; unsigned int i; for (i = 0; i < num_formats; i++) { - fmt = dcmi->user_formats[i]; + fmt = dcmi->sd_formats[i]; if (fmt->fourcc == fourcc) return fmt; } @@ -698,40 +698,42 @@ static const struct dcmi_format *find_format_by_fourcc(struct stm32_dcmi *dcmi, } static int dcmi_try_fmt(struct stm32_dcmi *dcmi, struct v4l2_format *f, - const struct dcmi_format **current_fmt) + const struct dcmi_format **sd_format) { - const struct dcmi_format *dcmi_fmt; - struct v4l2_pix_format *pixfmt = &f->fmt.pix; + const struct dcmi_format *sd_fmt; + struct v4l2_pix_format *pix = &f->fmt.pix; struct v4l2_subdev_pad_config pad_cfg; struct v4l2_subdev_format format = { .which = V4L2_SUBDEV_FORMAT_TRY, }; int ret; - dcmi_fmt = find_format_by_fourcc(dcmi, pixfmt->pixelformat); - if (!dcmi_fmt) { - dcmi_fmt = dcmi->user_formats[dcmi->num_user_formats - 1]; - pixfmt->pixelformat = dcmi_fmt->fourcc; + sd_fmt = find_format_by_fourcc(dcmi, pix->pixelformat); + if (!sd_fmt) { + sd_fmt = dcmi->sd_formats[dcmi->num_of_sd_formats - 1]; + pix->pixelformat = sd_fmt->fourcc; } /* Limit to hardware capabilities */ - pixfmt->width = clamp(pixfmt->width, MIN_WIDTH, MAX_WIDTH); - pixfmt->height = clamp(pixfmt->height, MIN_HEIGHT, MAX_HEIGHT); + pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH); + pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT); - v4l2_fill_mbus_format(&format.format, pixfmt, dcmi_fmt->mbus_code); + v4l2_fill_mbus_format(&format.format, pix, sd_fmt->mbus_code); ret = v4l2_subdev_call(dcmi->entity.subdev, pad, set_fmt, &pad_cfg, &format); if (ret < 0) return ret; - v4l2_fill_pix_format(pixfmt, &format.format); + /* Update pix regarding to what sensor can do */ + v4l2_fill_pix_format(pix, &format.format); - pixfmt->field = V4L2_FIELD_NONE; - pixfmt->bytesperline = pixfmt->width * dcmi_fmt->bpp; - pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height; - if (current_fmt) - *current_fmt = dcmi_fmt; + pix->field = V4L2_FIELD_NONE; + pix->bytesperline = pix->width * sd_fmt->bpp; + pix->sizeimage = pix->bytesperline * pix->height; + + if (sd_format) + *sd_format = sd_fmt; return 0; } @@ -741,22 +743,25 @@ static int dcmi_set_fmt(struct stm32_dcmi *dcmi, struct v4l2_format *f) struct v4l2_subdev_format format = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, }; - const struct dcmi_format *current_fmt; + const struct dcmi_format *sd_format; + struct v4l2_mbus_framefmt *mf = &format.format; + struct v4l2_pix_format *pix = &f->fmt.pix; int ret; - ret = dcmi_try_fmt(dcmi, f, ¤t_fmt); + ret = dcmi_try_fmt(dcmi, f, &sd_format); if (ret) return ret; - v4l2_fill_mbus_format(&format.format, &f->fmt.pix, - current_fmt->mbus_code); + /* pix to mbus format */ + v4l2_fill_mbus_format(mf, pix, + sd_format->mbus_code); ret = v4l2_subdev_call(dcmi->entity.subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; dcmi->fmt = *f; - dcmi->current_fmt = current_fmt; + dcmi->sd_format = sd_format; return 0; } @@ -785,10 +790,10 @@ static int dcmi_enum_fmt_vid_cap(struct file *file, void *priv, { struct stm32_dcmi *dcmi = video_drvdata(file); - if (f->index >= dcmi->num_user_formats) + if (f->index >= dcmi->num_of_sd_formats) return -EINVAL; - f->pixelformat = dcmi->user_formats[f->index]->fourcc; + f->pixelformat = dcmi->sd_formats[f->index]->fourcc; return 0; } @@ -830,18 +835,18 @@ static int dcmi_enum_framesizes(struct file *file, void *fh, struct v4l2_frmsizeenum *fsize) { struct stm32_dcmi *dcmi = video_drvdata(file); - const struct dcmi_format *dcmi_fmt; + const struct dcmi_format *sd_fmt; struct v4l2_subdev_frame_size_enum fse = { .index = fsize->index, .which = V4L2_SUBDEV_FORMAT_ACTIVE, }; int ret; - dcmi_fmt = find_format_by_fourcc(dcmi, fsize->pixel_format); - if (!dcmi_fmt) + sd_fmt = find_format_by_fourcc(dcmi, fsize->pixel_format); + if (!sd_fmt) return -EINVAL; - fse.code = dcmi_fmt->mbus_code; + fse.code = sd_fmt->mbus_code; ret = v4l2_subdev_call(dcmi->entity.subdev, pad, enum_frame_size, NULL, &fse); @@ -859,7 +864,7 @@ static int dcmi_enum_frameintervals(struct file *file, void *fh, struct v4l2_frmivalenum *fival) { struct stm32_dcmi *dcmi = video_drvdata(file); - const struct dcmi_format *dcmi_fmt; + const struct dcmi_format *sd_fmt; struct v4l2_subdev_frame_interval_enum fie = { .index = fival->index, .width = fival->width, @@ -868,11 +873,11 @@ static int dcmi_enum_frameintervals(struct file *file, void *fh, }; int ret; - dcmi_fmt = find_format_by_fourcc(dcmi, fival->pixel_format); - if (!dcmi_fmt) + sd_fmt = find_format_by_fourcc(dcmi, fival->pixel_format); + if (!sd_fmt) return -EINVAL; - fie.code = dcmi_fmt->mbus_code; + fie.code = sd_fmt->mbus_code; ret = v4l2_subdev_call(dcmi->entity.subdev, pad, enum_frame_interval, NULL, &fie); @@ -994,7 +999,7 @@ static int dcmi_set_default_fmt(struct stm32_dcmi *dcmi) .width = CIF_WIDTH, .height = CIF_HEIGHT, .field = V4L2_FIELD_NONE, - .pixelformat = dcmi->user_formats[0]->fourcc, + .pixelformat = dcmi->sd_formats[0]->fourcc, }, }; int ret; @@ -1002,7 +1007,7 @@ static int dcmi_set_default_fmt(struct stm32_dcmi *dcmi) ret = dcmi_try_fmt(dcmi, &f, NULL); if (ret) return ret; - dcmi->current_fmt = dcmi->user_formats[0]; + dcmi->sd_format = dcmi->sd_formats[0]; dcmi->fmt = f; return 0; } @@ -1025,7 +1030,7 @@ static const struct dcmi_format dcmi_formats[] = { static int dcmi_formats_init(struct stm32_dcmi *dcmi) { - const struct dcmi_format *dcmi_fmts[ARRAY_SIZE(dcmi_formats)]; + const struct dcmi_format *sd_fmts[ARRAY_SIZE(dcmi_formats)]; unsigned int num_fmts = 0, i, j; struct v4l2_subdev *subdev = dcmi->entity.subdev; struct v4l2_subdev_mbus_code_enum mbus_code = { @@ -1040,13 +1045,13 @@ static int dcmi_formats_init(struct stm32_dcmi *dcmi) /* Code supported, have we got this fourcc yet? */ for (j = 0; j < num_fmts; j++) - if (dcmi_fmts[j]->fourcc == + if (sd_fmts[j]->fourcc == dcmi_formats[i].fourcc) /* Already available */ break; if (j == num_fmts) /* New */ - dcmi_fmts[num_fmts++] = dcmi_formats + i; + sd_fmts[num_fmts++] = dcmi_formats + i; } mbus_code.index++; } @@ -1054,18 +1059,18 @@ static int dcmi_formats_init(struct stm32_dcmi *dcmi) if (!num_fmts) return -ENXIO; - dcmi->num_user_formats = num_fmts; - dcmi->user_formats = devm_kcalloc(dcmi->dev, - num_fmts, sizeof(struct dcmi_format *), - GFP_KERNEL); - if (!dcmi->user_formats) { - dev_err(dcmi->dev, "could not allocate memory\n"); + dcmi->num_of_sd_formats = num_fmts; + dcmi->sd_formats = devm_kcalloc(dcmi->dev, + num_fmts, sizeof(struct dcmi_format *), + GFP_KERNEL); + if (!dcmi->sd_formats) { + dev_err(dcmi->dev, "Could not allocate memory\n"); return -ENOMEM; } - memcpy(dcmi->user_formats, dcmi_fmts, + memcpy(dcmi->sd_formats, sd_fmts, num_fmts * sizeof(struct dcmi_format *)); - dcmi->current_fmt = dcmi->user_formats[0]; + dcmi->sd_format = dcmi->sd_formats[0]; return 0; } -- cgit v1.2.3