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media: atmel: atmel-isc: add checks for limiting frame sizes

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When calling the subdev, certain subdev drivers will overwrite the
frame size and adding sizes which are beyond the ISC's capabilities.
Thus we need to ensure the frame size is cropped to the maximum caps.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Eugen Hristev 2021-04-13 12:57:01 +02:00 committed by Mauro Carvalho Chehab
parent d5475b3c90
commit 5122e8d15a
1 changed files with 12 additions and 0 deletions
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12
drivers/media/platform/atmel/atmel-isc-base.c
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@ -1338,6 +1338,12 @@ static int isc_try_fmt(struct isc_device *isc, struct v4l2_format *f,
v4l2_fill_pix_format(pixfmt, &format.format);
/* Limit to Atmel ISC hardware capabilities */
if (pixfmt->width > ISC_MAX_SUPPORT_WIDTH)
pixfmt->width = ISC_MAX_SUPPORT_WIDTH;
if (pixfmt->height > ISC_MAX_SUPPORT_HEIGHT)
pixfmt->height = ISC_MAX_SUPPORT_HEIGHT;
pixfmt->field = V4L2_FIELD_NONE;
pixfmt->bytesperline = (pixfmt->width * isc->try_config.bpp) >> 3;
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
@ -1373,6 +1379,12 @@ static int isc_set_fmt(struct isc_device *isc, struct v4l2_format *f)
if (ret < 0)
return ret;
/* Limit to Atmel ISC hardware capabilities */
if (pixfmt->width > ISC_MAX_SUPPORT_WIDTH)
pixfmt->width = ISC_MAX_SUPPORT_WIDTH;
if (pixfmt->height > ISC_MAX_SUPPORT_HEIGHT)
pixfmt->height = ISC_MAX_SUPPORT_HEIGHT;
isc->fmt = *f;
if (isc->try_config.sd_format && isc->config.sd_format &&