Hi all, The soc-camera framework is a problem for reusability of sub-device drivers since those need access to the soc-camera framework. Which defeats the purpose of the sub-device framework. It is the reason why we still have a media/i2c/soc-camera directory for subdevs that can only work with soc-camera. Ideally I would like to drop soc-camera completely, but it is still in use. One of the largest users is Renesas with their r-car SoC, but Niklas Söderlund made a replacement driver that should make it possible to remove the soc-camera r-car driver, hopefully this year. What I would like to do is to move soc-camera drivers that we consider obsolete to staging, and remove them in 1-2 kernel cycles if nobody steps up. See also this past thread from Guennadi: http://www.spinics.net/lists/linux-media/msg89253.html And yes, I said in that thread that I was OK with keeping soc-camera as-is. But it still happens that companies pick this framework for new devices (the driver for the Tegra K1 for example). It is another reason besides the reusability issue for remove this framework more aggressively then I intended originally. We have the following drivers: - pxa_camera for the PXA27x Quick Capture Interface Apparently this architecture still gets attention (see the link to the thread above). But it does use vb1 which we really want to phase out soon. Does anyone know if this driver still works with the latest kernel? Because it is using vb1 it is a strong candidate for removing it (or replacing it with something better if someone steps up). - mx2_camera: i.MX27 Camera Sensor Interface Have not seen any development since April 2013 (mx2-camera: move interface activation and deactivation to clock callbacks by Guennadi). No idea if it still works or if it is still in use. Does anyone know? - mx3_camera: i.MX3x Camera Sensor Interface Have not seen any development since July 2013 (add support for asynchronous subdevice registration by Guennadi). Same as for mx2_camera: does it still work? Is it still in use? - omap1_camera: OMAP1 Camera Interface It uses vb1, so that's one very good reason for removing it. And as far as I know it is unused and likely won't work. - sh_mobile_ceu_camera: SuperH Mobile CEU Interface I worked on this, but I know it does function anymore. I'd say that this can be removed. - sh_mobile_csi2: SuperH Mobile MIPI CSI-2 Interface I don't have hardware to test, but I'd be surprised if it still works. Can someone test? If it is broken, then it can be moved to staging. - rcar_vin: R-Car Video Input (VIN) Will be replaced with a regular driver as mentioned above. - atmel-isi: ATMEL Image Sensor Interface (ISI) I believe this is still actively maintained. Would someone be willing to convert this? It doesn't look like a complex driver. Now I am not planning to remove soc-camera (yet), but at least we should get rid of unmaintained drivers, especially if they don't work anymore or if they use the old vb1 mess. And we can then take a good look at what remains. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
