Em Mon, 4 Nov 2013 01:06:26 +0100 Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> escreveu: > From: Sergio Aguirre <sergio.a.aguirre@xxxxxxxxx> > > This adds a very simplistic driver to utilize the CSI2A interface inside > the ISS subsystem in OMAP4, and dump the data to memory. > > Check Documentation/video4linux/omap4_camera.txt for details. > > This commit adds the driver core, registers definitions and > documentation. > > Signed-off-by: Sergio Aguirre <sergio.a.aguirre@xxxxxxxxx> > > [Port the driver to v3.12-rc3, including the following changes > - Don't include plat/ headers > - Don't use cpu_is_omap44xx() macro > - Don't depend on EXPERIMENTAL > - Fix s_crop operation prototype > - Update link_notify prototype > - Rename media_entity_remote_source to media_entity_remote_pad] > > Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > --- > Documentation/video4linux/omap4_camera.txt | 60 ++ > drivers/staging/media/omap4iss/iss.c | 1477 ++++++++++++++++++++++++++++ > drivers/staging/media/omap4iss/iss.h | 153 +++ > drivers/staging/media/omap4iss/iss_regs.h | 883 +++++++++++++++++ > include/media/omap4iss.h | 65 ++ > 5 files changed, 2638 insertions(+) > create mode 100644 Documentation/video4linux/omap4_camera.txt > create mode 100644 drivers/staging/media/omap4iss/iss.c > create mode 100644 drivers/staging/media/omap4iss/iss.h > create mode 100644 drivers/staging/media/omap4iss/iss_regs.h > create mode 100644 include/media/omap4iss.h > ... > + /* > + * atomic_set() doesn't include memory barrier on ARM platform for SMP > + * scenario. We'll call it here to avoid race conditions. > + */ > + atomic_set(stopping, 1); > + smp_wmb(); Hmm... if atomic_set() is broken on ARM, you should be fixing its implementation, and not adding any hacks like the above on all places where atomic ops are needed. -- Cheers, Mauro -- 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
