media: ipu3-cio2: Fix pixel-rate derived link frequency

[ Upstream commit a7de6eac6f6f73d48d97a6c93032107775f4593b ]

The driver uses v4l2_get_link_freq() helper to obtain the link frequency
using the LINK_FREQ but also the PIXEL_RATE control. The divisor for the
pixel rate derived link frequency was wrong, missing the bus uses double
data rate. Fix this.

Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Fixes: 4b6c129e87a3 ("media: ipu3-cio2: Use v4l2_get_link_freq helper")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.c b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
index 143ba9d90342fb8a297b9e72f369b1384e78f168..325c1483f42bdc38e6a3b64829cf455d26827196 100644 (file)
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
@@ -302,7 +302,7 @@ static int cio2_csi2_calc_timing(struct cio2_device *cio2, struct cio2_queue *q,
        if (!q->sensor)
                return -ENODEV;
 
-       freq = v4l2_get_link_freq(q->sensor->ctrl_handler, bpp, lanes);
+       freq = v4l2_get_link_freq(q->sensor->ctrl_handler, bpp, lanes * 2);
        if (freq < 0) {
                dev_err(dev, "error %lld, invalid link_freq\n", freq);
                return freq;