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media: cadence: csi2rx: Configure DPHY using link freq

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Some platforms like TI's J721E can have the CSI2RX paired with an
external DPHY. Use the generic PHY framework to configure the DPHY with
the correct link frequency.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Tested-by: Julien Massot <julien.massot@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Co-developed-by: Jai Luthra <j-luthra@ti.com>
Signed-off-by: Jai Luthra <j-luthra@ti.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Pratyush Yadav 2023-10-09 18:39:32 +05:30 committed by Hans Verkuil
parent dbca7b3c41
commit a91d06f46b
1 changed files with 24 additions and 0 deletions
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24
drivers/media/platform/cadence/cdns-csi2rx.c
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@ -145,8 +145,32 @@ static void csi2rx_reset(struct csi2rx_priv *csi2rx)
static int csi2rx_configure_ext_dphy(struct csi2rx_priv *csi2rx)
{
union phy_configure_opts opts = { };
struct phy_configure_opts_mipi_dphy *cfg = &opts.mipi_dphy;
struct v4l2_subdev_format sd_fmt = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
.pad = CSI2RX_PAD_SINK,
};
const struct csi2rx_fmt *fmt;
s64 link_freq;
int ret;
ret = v4l2_subdev_call_state_active(&csi2rx->subdev, pad, get_fmt,
&sd_fmt);
if (ret < 0)
return ret;
fmt = csi2rx_get_fmt_by_code(sd_fmt.format.code);
link_freq = v4l2_get_link_freq(csi2rx->source_subdev->ctrl_handler,
fmt->bpp, 2 * csi2rx->num_lanes);
if (link_freq < 0)
return link_freq;
ret = phy_mipi_dphy_get_default_config_for_hsclk(link_freq,
csi2rx->num_lanes, cfg);
if (ret)
return ret;
ret = phy_power_on(csi2rx->dphy);
if (ret)
return ret;