[media] soc-camera: add host clock callbacks to start and stop the master clock
Currently soc-camera uses a single camera host callback to activate the interface master clock and to configure the interface for a specific client. However, during probing we might not have the information about a client, we just need to activate the clock. Add new camera host driver callbacks to only start and stop the clock without and client-specific configuration. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -512,10 +512,23 @@ static int soc_camera_add_device(struct soc_camera_device *icd)
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if (ici->icd)
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return -EBUSY;
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ret = ici->ops->add(icd);
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if (!ret)
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ici->icd = icd;
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if (ici->ops->clock_start) {
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ret = ici->ops->clock_start(ici);
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if (ret < 0)
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return ret;
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}
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ret = ici->ops->add(icd);
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if (ret < 0)
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goto eadd;
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ici->icd = icd;
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return 0;
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eadd:
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if (ici->ops->clock_stop)
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ici->ops->clock_stop(ici);
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return ret;
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}
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@ -527,6 +540,8 @@ static void soc_camera_remove_device(struct soc_camera_device *icd)
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return;
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ici->ops->remove(icd);
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if (ici->ops->clock_stop)
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ici->ops->clock_stop(ici);
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ici->icd = NULL;
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}
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@ -74,6 +74,8 @@ struct soc_camera_host_ops {
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struct module *owner;
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int (*add)(struct soc_camera_device *);
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void (*remove)(struct soc_camera_device *);
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int (*clock_start)(struct soc_camera_host *);
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void (*clock_stop)(struct soc_camera_host *);
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/*
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* .get_formats() is called for each client device format, but
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* .put_formats() is only called once. Further, if any of the calls to
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