| Message ID | 20241112124614.646281-3-dan.scally@ideasonboard.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Extend RAW format support for rzg2l-cru driver | expand |
On 12/11/2024 12:46, Daniel Scally wrote: > From: Daniel Scally <dan.scally+renesas@ideasonboard.com> > > The rzg2l_csi2_calc_mbps() function currently tries to calculate the > link frequency for a CSI2 bus using the V4L2_CID_PIXEL_RATE control > of the remote subdevice. Switch the function to v4l2_get_link_freq() > which correctly targets V4L2_CID_LINK_FREQ before falling back on > V4L2_CID_PIXEL_RATE if the former is unavailable. > > Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> > Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> > Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > Signed-off-by: Daniel Scally <dan.scally+renesas@ideasonboard.com> > --- > Changes in v2: > > - None > > .../platform/renesas/rzg2l-cru/rzg2l-csi2.c | 25 ++++++++----------- > 1 file changed, 10 insertions(+), 15 deletions(-) > > diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c > index 881e910dce02..cbefd43de09b 100644 > --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c > +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c > @@ -242,28 +242,23 @@ static int rzg2l_csi2_calc_mbps(struct rzg2l_csi2 *csi2) > const struct rzg2l_csi2_format *format; > const struct v4l2_mbus_framefmt *fmt; > struct v4l2_subdev_state *state; > - struct v4l2_ctrl *ctrl; > u64 mbps; > > - /* Read the pixel rate control from remote. */ > - ctrl = v4l2_ctrl_find(source->ctrl_handler, V4L2_CID_PIXEL_RATE); > - if (!ctrl) { > - dev_err(csi2->dev, "no pixel rate control in subdev %s\n", > - source->name); > - return -EINVAL; > - } > - > state = v4l2_subdev_lock_and_get_active_state(&csi2->subdev); > fmt = v4l2_subdev_state_get_format(state, RZG2L_CSI2_SINK); > format = rzg2l_csi2_code_to_fmt(fmt->code); > v4l2_subdev_unlock_state(state); > > - /* > - * Calculate hsfreq in Mbps > - * hsfreq = (pixel_rate * bits_per_sample) / number_of_lanes > - */ > - mbps = v4l2_ctrl_g_ctrl_int64(ctrl) * format->bpp; > - do_div(mbps, csi2->lanes * 1000000); > + /* Read the link frequency from remote subdevice. */ > + mbps = v4l2_get_link_freq(source->ctrl_handler, format->bpp, > + csi2->lanes); > + if (mbps < 0) { CI points out to me that mbps is unsigned and so this check is meaningless - I'll fix that in a v3 > + dev_err(csi2->dev, "can't retrieve link freq from subdev %s\n", > + source->name); > + return -EINVAL; > + } > + > + do_div(mbps, 1000000); > > return mbps; > }
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c index 881e910dce02..cbefd43de09b 100644 --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c @@ -242,28 +242,23 @@ static int rzg2l_csi2_calc_mbps(struct rzg2l_csi2 *csi2) const struct rzg2l_csi2_format *format; const struct v4l2_mbus_framefmt *fmt; struct v4l2_subdev_state *state; - struct v4l2_ctrl *ctrl; u64 mbps; - /* Read the pixel rate control from remote. */ - ctrl = v4l2_ctrl_find(source->ctrl_handler, V4L2_CID_PIXEL_RATE); - if (!ctrl) { - dev_err(csi2->dev, "no pixel rate control in subdev %s\n", - source->name); - return -EINVAL; - } - state = v4l2_subdev_lock_and_get_active_state(&csi2->subdev); fmt = v4l2_subdev_state_get_format(state, RZG2L_CSI2_SINK); format = rzg2l_csi2_code_to_fmt(fmt->code); v4l2_subdev_unlock_state(state); - /* - * Calculate hsfreq in Mbps - * hsfreq = (pixel_rate * bits_per_sample) / number_of_lanes - */ - mbps = v4l2_ctrl_g_ctrl_int64(ctrl) * format->bpp; - do_div(mbps, csi2->lanes * 1000000); + /* Read the link frequency from remote subdevice. */ + mbps = v4l2_get_link_freq(source->ctrl_handler, format->bpp, + csi2->lanes); + if (mbps < 0) { + dev_err(csi2->dev, "can't retrieve link freq from subdev %s\n", + source->name); + return -EINVAL; + } + + do_div(mbps, 1000000); return mbps; }