diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2020-09-30 18:20:42 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-12-03 10:47:13 +0100 |
| commit | 9f65192d8d256dcac99a81c8129234b999704772 (patch) | |
| tree | 566b5f7973dcef22b74b60e4db6e3015cbd63635 /drivers | |
| parent | 7b1dd0f85013c33d5eba1f69503bf29c8e17131e (diff) | |
media: ccs: Fix obtaining bus information from firmware
Let v4l2_fwnode_endpoint_alloc_parse to figure out the type of the data
bus. As the old bindings did not require the "bus-type" property, we need
to rely on guessing between CSI-2 D-PHY and CCP2. Setting the type to
CSI-2 D-PHY will parse just that and succeed even if no data-lanes are
set.
Also add a comment on the matter to the driver to avoid breaking this in
the future.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index dcc71c8fe075..6fb546ca08f3 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -2853,7 +2853,7 @@ static int __maybe_unused ccs_resume(struct device *dev) static int ccs_get_hwconfig(struct ccs_sensor *sensor, struct device *dev) { struct ccs_hwconfig *hwcfg = &sensor->hwcfg; - struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 }; + struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_UNKNOWN }; struct fwnode_handle *ep; struct fwnode_handle *fwnode = dev_fwnode(dev); u32 rotation; @@ -2864,13 +2864,11 @@ static int ccs_get_hwconfig(struct ccs_sensor *sensor, struct device *dev) if (!ep) return -ENODEV; - bus_cfg.bus_type = V4L2_MBUS_CSI2_DPHY; + /* + * Note that we do need to rely on detecting the bus type between CSI-2 + * D-PHY and CCP2 as the old bindings did not require it. + */ rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); - if (rval == -ENXIO) { - bus_cfg = (struct v4l2_fwnode_endpoint) - { .bus_type = V4L2_MBUS_CCP2 }; - rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); - } if (rval) goto out_err; @@ -2879,6 +2877,7 @@ static int ccs_get_hwconfig(struct ccs_sensor *sensor, struct device *dev) hwcfg->csi_signalling_mode = CCS_CSI_SIGNALING_MODE_CSI_2_DPHY; hwcfg->lanes = bus_cfg.bus.mipi_csi2.num_data_lanes; break; + case V4L2_MBUS_CSI1: case V4L2_MBUS_CCP2: hwcfg->csi_signalling_mode = (bus_cfg.bus.mipi_csi1.strobe) ? SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_STROBE : |