media: qcom: camss: Remove special case for VFE get/put

From sdm845 onwards we need to ensure the VFE is powered on prior to
switching on the CSID.

Currently the code tests for sdm845, sm8250 and then does get/set. This is
not extensible and it turns out is not necessary either since vfe_get and
vfe_set reference count.

Remove the over-conservative SoC version check.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # rb3 # db410c
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index 99f651e..95873f9 100644 (file)
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -159,15 +159,17 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
        struct camss *camss = csid->camss;
        struct device *dev = camss->dev;
        struct vfe_device *vfe = &camss->vfe[csid->id];
-       u32 version = camss->res->version;
        int ret = 0;
 
        if (on) {
-               if (version == CAMSS_8250 || version == CAMSS_845) {
-                       ret = vfe_get(vfe);
-                       if (ret < 0)
-                               return ret;
-               }
+               /*
+                * From SDM845 onwards, the VFE needs to be powered on before
+                * switching on the CSID. Do so unconditionally, as there is no
+                * drawback in following the same powering order on older SoCs.
+                */
+               ret = vfe_get(vfe);
+               if (ret < 0)
+                       return ret;
 
                ret = pm_runtime_resume_and_get(dev);
                if (ret < 0)
@@ -217,8 +219,7 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
                regulator_bulk_disable(csid->num_supplies,
                                       csid->supplies);
                pm_runtime_put_sync(dev);
-               if (version == CAMSS_8250 || version == CAMSS_845)
-                       vfe_put(vfe);
+               vfe_put(vfe);
        }
 
        return ret;