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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Eugen Hristev <eugen.hristev@microchip.com>,
        Jacopo Mondi <jacopo@jmondi.org>,
        Hans Verkuil <hverkuil-cisco@xs4all.nl>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15 728/913] media: atmel: atmel-isc-base: report frame sizes as full supported range
Date:   Tue,  5 Apr 2022 09:29:50 +0200
Message-Id: <20220405070401.653441413@linuxfoundation.org>
In-Reply-To: <20220405070339.801210740@linuxfoundation.org>
References: <20220405070339.801210740@linuxfoundation.org>
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From: Eugen Hristev <eugen.hristev@microchip.com>

[ Upstream commit 72802a86e11c34e819fbfb38f58c5aef668f833d ]

The ISC supports a full broad range of frame sizes.
Until now, the subdevice was queried for possible frame sizes and these
were reported to the user space.
However, the ISC should not care about which frame sizes the subdev
supports, as long as this frame size is supported.
Thus, report a continuous range from smallest frame size up to the max
resolution.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/atmel/atmel-isc-base.c | 22 +++++++++----------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/media/platform/atmel/atmel-isc-base.c b/drivers/media/platform/atmel/atmel-isc-base.c
index ebf264b980f9..f768be3c4059 100644
--- a/drivers/media/platform/atmel/atmel-isc-base.c
+++ b/drivers/media/platform/atmel/atmel-isc-base.c
@@ -1369,14 +1369,12 @@ static int isc_enum_framesizes(struct file *file, void *fh,
 			       struct v4l2_frmsizeenum *fsize)
 {
 	struct isc_device *isc = video_drvdata(file);
-	struct v4l2_subdev_frame_size_enum fse = {
-		.code = isc->config.sd_format->mbus_code,
-		.index = fsize->index,
-		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
-	};
 	int ret = -EINVAL;
 	int i;
 
+	if (fsize->index)
+		return -EINVAL;
+
 	for (i = 0; i < isc->num_user_formats; i++)
 		if (isc->user_formats[i]->fourcc == fsize->pixel_format)
 			ret = 0;
@@ -1388,14 +1386,14 @@ static int isc_enum_framesizes(struct file *file, void *fh,
 	if (ret)
 		return ret;
 
-	ret = v4l2_subdev_call(isc->current_subdev->sd, pad, enum_frame_size,
-			       NULL, &fse);
-	if (ret)
-		return ret;
+	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
 
-	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
-	fsize->discrete.width = fse.max_width;
-	fsize->discrete.height = fse.max_height;
+	fsize->stepwise.min_width = 16;
+	fsize->stepwise.max_width = isc->max_width;
+	fsize->stepwise.min_height = 16;
+	fsize->stepwise.max_height = isc->max_height;
+	fsize->stepwise.step_width = 1;
+	fsize->stepwise.step_height = 1;
 
 	return 0;
 }
-- 
2.34.1