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2019-08-09iommu/omap: Fix compilation warningsJoerg Roedel1-2/+9
A recent patch introduced a new compiler warning because two functions with non-void return type have no return statement in omap-iommu.h for CONFIG_OMAP_IOMMU=n. Fix this by adding return statements to these functions. Fixes: d9c4d8a6cc0f8 ('iommu/omap: introduce new API for runtime suspend/resume control') Signed-off-by: Joerg Roedel <jroedel@suse.de>
2019-08-09iommu/omap: introduce new API for runtime suspend/resume controlSuman Anna1-0/+8
This patch adds the support for the OMAP IOMMUs to be suspended during the auto suspend/resume of the OMAP remoteproc devices. The remote processors are auto suspended after a certain time of idle or inactivity period. This is done by introducing two new API, omap_iommu_domain_deactivate() and omap_iommu_domain_activate() to allow the client users/master devices of the IOMMU devices to deactivate & activate the IOMMU devices from their runtime suspend/resume operations. There is no API exposed by the IOMMU layer at present, and so these new API are added directly in the OMAP IOMMU driver to minimize framework changes. The API simply decrements and increments the runtime usage count of the IOMMU devices and let the context be saved/restored using the existing runtime pm callbacks. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-20media: omap: omap-iommu.h: allow building drivers with COMPILE_TESTMauro Carvalho Chehab1-0/+5
Drivers that depend on omap-iommu.h (currently, just omap3isp) need a stub implementation in order to be built with COMPILE_TEST. Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2014-07-29iommu/omap: Remove virtual memory managerLaurent Pinchart1-35/+2
The OMAP3 ISP driver was the only user of the OMAP IOVMM API. Now that is has been ported to the DMA API, remove the unused virtual memory manager. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2012-11-20ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.hTony Lindgren1-0/+52
Looks like the iommu framework does not have generic functions exported for all the needs yet. The hardware specific functions are defined in files like intel-iommu.h and amd-iommu.h. Follow the same standard for omap-iommu.h. This is needed because we are removing plat and mach includes for ARM common zImage support. Further work should continue in the iommu framework context as only pure platform data will be communicated from arch/arm/*omap*/* code to the iommu framework. Cc: Ido Yariv <ido@wizery.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Omar Ramirez Luna <omar.luna@linaro.org> Cc: linux-media@vger.kernel.org Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Joerg Roedel <joro@8bytes.org> Signed-off-by: Tony Lindgren <tony@atomide.com>