[PATCH v9 2/4] v4l: ioctl: Use %p4cc printk modifier to print FourCC codes

From: Sakari Ailus
Date: Tue Feb 16 2021 - 10:59:21 EST

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Now that we can print FourCC codes directly using printk, make use of the
feature in V4L2 core.

Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-ioctl.c | 85 +++++++---------------------
1 file changed, 21 insertions(+), 64 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 31d1342e61e8..31662c3a8c9e 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -265,13 +265,9 @@ static void v4l_print_fmtdesc(const void *arg, bool write_only)
{
const struct v4l2_fmtdesc *p = arg;

- pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, mbus_code=0x%04x, description='%.*s'\n",
+ pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n",
p->index, prt_names(p->type, v4l2_type_names),
- p->flags, (p->pixelformat & 0xff),
- (p->pixelformat >> 8) & 0xff,
- (p->pixelformat >> 16) & 0xff,
- (p->pixelformat >> 24) & 0xff,
- p->mbus_code,
+ p->flags, &p->pixelformat, p->mbus_code,
(int)sizeof(p->description), p->description);
}

@@ -293,12 +289,8 @@ static void v4l_print_format(const void *arg, bool write_only)
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
pix = &p->fmt.pix;
- pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
- pix->width, pix->height,
- (pix->pixelformat & 0xff),
- (pix->pixelformat >> 8) & 0xff,
- (pix->pixelformat >> 16) & 0xff,
- (pix->pixelformat >> 24) & 0xff,
+ pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
+ pix->width, pix->height, &pix->pixelformat,
prt_names(pix->field, v4l2_field_names),
pix->bytesperline, pix->sizeimage,
pix->colorspace, pix->flags, pix->ycbcr_enc,
@@ -307,12 +299,8 @@ static void v4l_print_format(const void *arg, bool write_only)
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
mp = &p->fmt.pix_mp;
- pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
- mp->width, mp->height,
- (mp->pixelformat & 0xff),
- (mp->pixelformat >> 8) & 0xff,
- (mp->pixelformat >> 16) & 0xff,
- (mp->pixelformat >> 24) & 0xff,
+ pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
+ mp->width, mp->height, &mp->pixelformat,
prt_names(mp->field, v4l2_field_names),
mp->colorspace, mp->num_planes, mp->flags,
mp->ycbcr_enc, mp->quantization, mp->xfer_func);
@@ -337,13 +325,9 @@ static void v4l_print_format(const void *arg, bool write_only)
case V4L2_BUF_TYPE_VBI_CAPTURE:
case V4L2_BUF_TYPE_VBI_OUTPUT:
vbi = &p->fmt.vbi;
- pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
+ pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n",
vbi->sampling_rate, vbi->offset,
- vbi->samples_per_line,
- (vbi->sample_format & 0xff),
- (vbi->sample_format >> 8) & 0xff,
- (vbi->sample_format >> 16) & 0xff,
- (vbi->sample_format >> 24) & 0xff,
+ vbi->samples_per_line, &vbi->sample_format,
vbi->start[0], vbi->start[1],
vbi->count[0], vbi->count[1]);
break;
@@ -360,21 +344,13 @@ static void v4l_print_format(const void *arg, bool write_only)
case V4L2_BUF_TYPE_SDR_CAPTURE:
case V4L2_BUF_TYPE_SDR_OUTPUT:
sdr = &p->fmt.sdr;
- pr_cont(", pixelformat=%c%c%c%c\n",
- (sdr->pixelformat >> 0) & 0xff,
- (sdr->pixelformat >> 8) & 0xff,
- (sdr->pixelformat >> 16) & 0xff,
- (sdr->pixelformat >> 24) & 0xff);
+ pr_cont(", pixelformat=%p4cc\n", &sdr->pixelformat);
break;
case V4L2_BUF_TYPE_META_CAPTURE:
case V4L2_BUF_TYPE_META_OUTPUT:
meta = &p->fmt.meta;
- pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
- (meta->dataformat >> 0) & 0xff,
- (meta->dataformat >> 8) & 0xff,
- (meta->dataformat >> 16) & 0xff,
- (meta->dataformat >> 24) & 0xff,
- meta->buffersize);
+ pr_cont(", dataformat=%p4cc, buffersize=%u\n",
+ &meta->dataformat, meta->buffersize);
break;
}
}
@@ -383,15 +359,10 @@ static void v4l_print_framebuffer(const void *arg, bool write_only)
{
const struct v4l2_framebuffer *p = arg;

- pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
- p->capability, p->flags, p->base,
- p->fmt.width, p->fmt.height,
- (p->fmt.pixelformat & 0xff),
- (p->fmt.pixelformat >> 8) & 0xff,
- (p->fmt.pixelformat >> 16) & 0xff,
- (p->fmt.pixelformat >> 24) & 0xff,
- p->fmt.bytesperline, p->fmt.sizeimage,
- p->fmt.colorspace);
+ pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
+ p->capability, p->flags, p->base, p->fmt.width, p->fmt.height,
+ &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage,
+ p->fmt.colorspace);
}

static void v4l_print_buftype(const void *arg, bool write_only)
@@ -761,13 +732,8 @@ static void v4l_print_frmsizeenum(const void *arg, bool write_only)
{
const struct v4l2_frmsizeenum *p = arg;

- pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
- p->index,
- (p->pixel_format & 0xff),
- (p->pixel_format >> 8) & 0xff,
- (p->pixel_format >> 16) & 0xff,
- (p->pixel_format >> 24) & 0xff,
- p->type);
+ pr_cont("index=%u, pixelformat=%p4cc, type=%u",
+ p->index, &p->pixel_format, p->type);
switch (p->type) {
case V4L2_FRMSIZE_TYPE_DISCRETE:
pr_cont(", wxh=%ux%u\n",
@@ -793,13 +759,8 @@ static void v4l_print_frmivalenum(const void *arg, bool write_only)
{
const struct v4l2_frmivalenum *p = arg;

- pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
- p->index,
- (p->pixel_format & 0xff),
- (p->pixel_format >> 8) & 0xff,
- (p->pixel_format >> 16) & 0xff,
- (p->pixel_format >> 24) & 0xff,
- p->width, p->height, p->type);
+ pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u",
+ p->index, &p->pixel_format, p->width, p->height, p->type);
switch (p->type) {
case V4L2_FRMIVAL_TYPE_DISCRETE:
pr_cont(", fps=%d/%d\n",
@@ -1459,12 +1420,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
return;
WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
flags = 0;
- snprintf(fmt->description, sz, "%c%c%c%c%s",
- (char)(fmt->pixelformat & 0x7f),
- (char)((fmt->pixelformat >> 8) & 0x7f),
- (char)((fmt->pixelformat >> 16) & 0x7f),
- (char)((fmt->pixelformat >> 24) & 0x7f),
- (fmt->pixelformat & (1UL << 31)) ? "-BE" : "");
+ snprintf(fmt->description, sz, "%p4cc",
+ &fmt->pixelformat);
break;
}
}
--
2.29.2

Next message: Sakari Ailus: "[PATCH v9 4/4] drm: Remove drm_get_format_name()"
Previous message: Sakari Ailus: "[PATCH v9 1/4] lib/vsprintf: Add support for printing V4L2 and DRM fourccs"
In reply to: Sakari Ailus: "[PATCH v9 1/4] lib/vsprintf: Add support for printing V4L2 and DRM fourccs"
Next in thread: Sakari Ailus: "[PATCH v9 4/4] drm: Remove drm_get_format_name()"
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