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2012-12-17MAINTAINERS: CHINESE MAINTAINERS mailing list is subscribers onlyJoe Perches1-1/+1
Mark it so. Signed-off-by: Joe Perches <joe@perches.com> Cc: Harry Wei <harryxiyou@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17lib/vsprintf.c: fix handling of %zd when using ssize_tJason Gunthorpe1-1/+4
Documentation/printk-formats.txt says to use %zd for a ssize_t argument and some drivers do. Unfortunately this prints a positive number for negative values eg: tpm_tis 70030000.tpm_tis: tpm_transmit: tpm_send: error 4294967234 Add a case to va_args a ssize_t type if the interpretation should be signed. Tested on PPC32. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17printk: boot_delay should only affect outputAndrew Cooks1-19/+21
The boot_delay parameter affects all printk(), even if the log level prevents visible output from the call. It results in delays greater than the user intended without purpose. This patch changes the behaviour of boot_delay to only delay output. Signed-off-by: Andrew Cooks <acooks@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17dmatest: check for dma mapping errorAndy Shevchenko1-1/+21
The kernel emits a warning if CONFIG_DMA_API_DEBUG=y: WARNING: at lib/dma-debug.c:933 check_unmap+0x5d6/0x6ac() dw_dmac dw_dmac.0: DMA-API: device driver failed to check map error[device address=0x0000000035698305] [size=14365 bytes] [mapped as single] Fix this by adding the required checking of the dma_map_single() return value. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17dmatest: implement two helpers to unmap dma memoryAndy Shevchenko1-10/+17
The unmap_src() and unmap_dst() will be used later as well. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17watchdog: store the watchdog sample period as a variableChuansheng Liu1-5/+8
Currently getting the sample period is always thru a complex calculation: get_softlockup_thresh() * ((u64)NSEC_PER_SEC / 5). We can store the sample period as a variable, and set it as __read_mostly type. Signed-off-by: liu chuansheng <chuansheng.liu@intel.com> Cc: Don Zickus <dzickus@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17usb: musb: use io{read,write}*_rep accessorsMatthew Leach2-27/+6
The {read,write}s{b,w,l} operations are not defined by all architectures and are being removed from the asm-generic/io.h interface. This patch replaces the usage of these string functions in the musb accessors with io{read,write}{8,16,32}_rep calls instead. Signed-off-by: Matthew Leach <matthew@mattleach.net> Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Ben Herrenschmidt <benh@kernel.crashing.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17musb: tusb6010: use io{read,write}*_rep accessorsMatthew Leach1-2/+3
The {read,write}s{b,w,l} operations are not defined by all architectures and are being removed from the asm-generic/io.h interface. This patch replaces the usage of these string functions in the tusb6010 accessors with io{read,write}{8,16,32}_rep calls instead. Signed-off-by: Matthew Leach <matthew@mattleach.net> Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Ben Herrenschmidt <benh@kernel.crashing.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17asm-generic: io: don't perform swab during {in,out} string functionsWill Deacon1-6/+6
The {in,out}s{b,w,l} functions are designed to operate on a stream of bytes and therefore should not perform any byte-swapping, regardless of the CPU byte order. This patch fixes the generic IO header so that {in,out}s{b,w,l} call the __raw_{read,write} functions directly rather than going via the endian-correcting accessors. Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Mike Frysinger <vapier@gentoo.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ben Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17.gitignore: remove stale entry for generated version.hJonathan Austin1-1/+0
Since userspace headers were moved to generated/uapi it possible to have a stale copy of linux/version.h at that file's old location. This causes confusion after building an older kernel version, then checking out and building a new one; the old (stale) version header will still get picked up until it is manually removed. This upsets the C library. Since the uapi changes, include/linux/version.h is no longer generated and should not be ignored, so this patch removes it from .gitignore. Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Reported-by: Kevin Petit <kevin.petit@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17fs/notify/inode_mark.c: make fsnotify_find_inode_mark_locked() staticTushar Behera1-2/+3
Fixes following sparse warning: fs/notify/inode_mark.c:127:22: warning: symbol 'fsnotify_find_inode_mark_locked' was not declared. Should it be static? Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17lseek: the "whence" argument is called "whence"Andrew Morton26-116/+116
But the kernel decided to call it "origin" instead. Fix most of the sites. Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17drivers: remove reference to feature-removal-schedule.txtTao Ma1-5/+1
In commit 9c0ece069b32 ("Get rid of Documentation/feature-removal.txt"), Linus removed feature-removal-schedule.txt from Documentation, but there is still some reference to this file. So remove them. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17sound: remove reference to feature-removal-schedule.txtTao Ma2-5/+1
In commit 9c0ece069b32 ("Get rid of Documentation/feature-removal.txt"), Linus removed feature-removal-schedule.txt from Documentation, but there is still some reference to this file. So remove them. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17kernel: remove reference to feature-removal-schedule.txtTao Ma2-4/+0
In commit 9c0ece069b32 ("Get rid of Documentation/feature-removal.txt"), Linus removed feature-removal-schedule.txt from Documentation, but there is still some reference to this file. So remove them. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17Documentation: remove reference to feature-removal-schedule.txtTao Ma2-5/+0
In commit 9c0ece069b32 ("Get rid of Documentation/feature-removal.txt"), Linus removed feature-removal-schedule.txt from Documentation, but there is still some reference to this file. So remove them. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17include/linux/init.h: use the stringify operator for the __define_initcall macroMatthew Leach2-38/+38
Currently the __define_initcall() macro takes three arguments, fn, id and level. The level argument is exactly the same as the id argument but wrapped in quotes. To overcome this need to specify three arguments to the __define_initcall macro, where one argument is the stringification of another, we can just use the stringification macro instead. Signed-off-by: Matthew Leach <matthew@mattleach.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17Documentation/kernel-parameters.txt: update mem= option's spec according to its implementationWen Congyang1-3/+4
Current mem= implementation seems buggy because the specification and implementation don't match. The current mem= has been working for many years and it's not buggy - it works as expected. So we should update the specification. Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Cc: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17frv: properly use the declarations provided by <asm/sections.h>Geert Uytterhoeven1-7/+5
- Remove the superfluous address-of ('&') operators, - Remove the unneeded casts, use %p to format pointers instead. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17frv: fix use of extinct _sbss and _ebss in debug codeGeert Uytterhoeven2-2/+2
Nowadays it should probably use __bss_start and __bss_stop Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17mm/memory.c: suppress warningAndrew Morton1-0/+1
gcc-4.4.4 screws this up. mm/memory.c: In function 'do_pmd_numa_page': mm/memory.c:3594: warning: no return statement in function returning non-void Cc: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17create non-empty arch/x86/include/uapi/asm/ filesAndrew Morton2-0/+2
patch(1) doesn't create zero-length files, so my kernel didn't compile. Put something in these files so patch(1) actually creates them. Cc: David Howells <dhowells@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17Revert "bdi: add a user-tunable cpu_list for the bdi flusher threads"Linus Torvalds2-88/+0
This reverts commit 8fa72d234da9b6b473bbb1f74d533663e4996e6b. People disagree about how this should be done, so let's revert this for now so that nobody starts using the new tuning interface. Tejun is thinking about a more generic interface for thread pool affinity. Requested-by: Tejun Heo <tj@kernel.org> Acked-by: Jeff Moyer <jmoyer@redhat.com> Acked-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17sched: numa: Fix build error if CONFIG_NUMA_BALANCING && !CONFIG_TRANSPARENT_HUGEPAGEMel Gorman1-1/+1
Michal Hocko reported that the following build error occurs if CONFIG_NUMA_BALANCING is set without THP support kernel/sched/fair.c: In function ‘task_numa_work’: kernel/sched/fair.c:932:55: error: call to ‘__build_bug_failed’ declared with attribute error: BUILD_BUG failed The problem is that HPAGE_PMD_SHIFT triggers a BUILD_BUG() on !CONFIG_TRANSPARENT_HUGEPAGE. This patch addresses the problem. Reported-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-16mm: fix kernel BUG at huge_memory.c:1474!Hugh Dickins1-3/+3
Andrea's autonuma-benchmark numa01 hits kernel BUG at huge_memory.c:1474! in change_huge_pmd called from change_protection from change_prot_numa from task_numa_work. That BUG, introduced in the huge zero page commit cad7f613c4d0 ("thp: change_huge_pmd(): make sure we don't try to make a page writable") was trying to verify that newprot never adds write permission to an anonymous huge page; but Automatic NUMA Balancing's 4b10e7d562c9 ("mm: mempolicy: Implement change_prot_numa() in terms of change_protection()") adds a new prot_numa path into change_huge_pmd(), which makes no use of the newprot provided, and may retain the write bit in the pmd. Just move the BUG_ON(pmd_write(entry)) up into the !prot_numa block. Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-16ARM: OMAP: Fix drivers to depend on omap for internal devicesTony Lindgren5-0/+8
These devices are not available on other architectures, so let's limit them to omap. If the driver subsystem maintainers want to build test system wide changes without building for each target, it's easy to carry a test patch that just strips out the depends entries from Kconfig files. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-16i2c: Mention functionality flags in SMBus protocol documentationJean Delvare1-9/+31
While the mapping between I2C adapter functionality flags and i2c_smbus_*() helper functions is rather obvious, let's still document it for clarity. Also drop the reference to 2 command byte I2C block reads, there is no support for that in the kernel at the moment. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-12-16i2c-piix4: Convert dev_printk(KERN_<LEVEL> to dev_<level>(Joe Perches1-3/+2
dev_<level> calls take less code than dev_printk(KERN_<LEVEL> and reducing object size is good. Coalesce formats for easier grep. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-12-16i2c-i801: Enable interrupts for all post-ICH5 chipsJean Delvare1-10/+1
I did not receive a single bug report after interrupt support was added for a limited number of chips. So I'd say the code is good and should be enabled for all supported chips, that is: ICH5 and later. Signed-off-by: Jean Delvare <khali@linux-fr.org> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
2012-12-16i2c-i801: Add device tree supportThierry Reding1-0/+2
Add support for probing slave devices parsed from the device tree. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-12-16MAINTAINERS: Fix drivers/i2c/busses/i2c-stub.cCesar Eduardo Barros1-1/+1
This file was moved to drivers/i2c/i2c-stub.c by commit 31d178b (i2c-stub: Move to drivers/i2c). Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2012-12-15Revert "x86-64/efi: Use EFI to deal with platform wall clock (again)"Linus Torvalds7-55/+116
This reverts commit bd52276fa1d4 ("x86-64/efi: Use EFI to deal with platform wall clock (again)"), and the two supporting commits: da5a108d05b4: "x86/kernel: remove tboot 1:1 page table creation code" 185034e72d59: "x86, efi: 1:1 pagetable mapping for virtual EFI calls") as they all depend semantically on commit 53b87cf088e2 ("x86, mm: Include the entire kernel memory map in trampoline_pgd") that got reverted earlier due to the problems it caused. This was pointed out by Yinghai Lu, and verified by me on my Macbook Air that uses EFI. Pointed-out-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-15Revert "x86, mm: Include the entire kernel memory map in trampoline_pgd"Linus Torvalds3-128/+3
This reverts commit 53b87cf088e2ea68d7c59619d0214cc15bb76133. It causes odd bootup problems on x86-64. Markus Trippelsdorf gets a repeatable oops, and I see a non-repeatable oops (or constant stream of messages that scroll off too quickly to read) that seems to go away with this commit reverted. So we don't know exactly what is wrong with the commit, but it's definitely problematic, and worth reverting sooner rather than later. Bisected-by: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: H Peter Anvin <hpa@zytor.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-14UAPI: (Scripted) Disintegrate arch/x86/include/asmDavid Howells80-1428/+1587
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-12-14block: export block_unplug tracepointNeilBrown1-0/+1
This allows stacked devices (like md/raid5) to provide blktrace tracing, including unplug events. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-12-14block: add plug for blkdev_issue_discardShaohua Li1-0/+3
Last post of this patch appears lost, so I resend this. Now discard merge works, add plug for blkdev_issue_discard. This will help discard request merge especially for raid0 case. In raid0, a big discard request is split to small requests, and if correct plug is added, such small requests can be merged in low layer. Signed-off-by: Shaohua Li <shli@fusionio.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-12-14block: discard granularity might not be power of 2Shaohua Li3-16/+20
In MD raid case, discard granularity might not be power of 2, for example, a 4-disk raid5 has 3*chunk_size discard granularity. Correct the calculation for such cases. Reported-by: Neil Brown <neilb@suse.de> Signed-off-by: Shaohua Li <shli@fusionio.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-12-14Smack: create a sysfs mount point for smackfsCasey Schaufler1-0/+17
There are a number of "conventions" for where to put LSM filesystems. Smack adheres to none of them. Create a mount point at /sys/fs/smackfs for mounting smackfs so that Smack can be conventional. Targeted for git://git.gitorious.org/smack-next/kernel.git Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
2012-12-14Smack: use select not depends in KconfigCasey Schaufler1-1/+5
The components NETLABEL and SECURITY_NETWORK are required by Smack. Using "depends" in Kconfig hides the Smack option if the user hasn't figured out that they need to be enabled while using make menuconfig. Using select is a better choice. Because select is not recursive depends on NET and SECURITY are added. The reflects similar usage in TOMOYO and AppArmor. Targeted for git://git.gitorious.org/smack-next/kernel.git Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
2012-12-15drm/exynos: add gsc ipp driverEunchul Kim7-0/+2214
This patch adds IPP subsystem-based gsc driver for exynos5 series. GSC is stand for General SCaler and supports the following features: - image scaler/rotator/crop/flip/csc and input/output DMA operations. - image rotation and image effect functions. - writeback and display output operations. - M2M operation to crop, scale, rotation and csc. The below is GSC hardware path: Memory------->GSC------>Memory FIMD--------->GSC------>HDMI FIMD--------->GSC------>Memory Memory------->GSC------>FIMD, Mixer This driver is registered to IPP subsystem framework to be used by user side and user can control the GSC hardware through some interfaces of IPP subsystem framework. Changelog v1 ~ v5: - added comments, code fixups and cleanups. Signed-off-by: Eunchul Kim <chulspro.kim@samsung.com> Signed-off-by: Jinyoung Jeon <jy0.jeon@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin.park <kyungmin.park@samsung.com>
2012-12-15drm/exynos: add rotator ipp driverEunchul Kim7-0/+985
This patch adds IPP subsystem-based rotator driver. And Rotator supports the following features. - Image crop operation support. - Rotate operation support to 90, 180 or 270 degree. - Flip operation support to vertical, horizontal or both. . as limitaions, the pixel format to source buffer should be same as the one to destination buffer and no scaler. This driver is registered to IPP subsystem framework to be used by user side and user can control the Rotator hardware through some interfaces of IPP subsystem framework. Changelog v6: - fix build warning. Changelog v1 ~ v5: - added comments, code fixups and cleanups. Signed-off-by: Eunchul Kim <chulspro.kim@samsung.com> Signed-off-by: Youngjun Cho <yj44.cho@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-12-15drm/exynos: add fimc ipp driverEunchul Kim8-0/+2756
FIMC is stand for Fully Interfactive Mobile Camera and supports image scaler/rotator/crop/flip/csc and input/output DMA operations and also supports writeback and display output operations. This driver is registered to IPP subsystem framework to be used by user side and user can control the FIMC hardware through some interfaces of IPP subsystem framework. Changelog v6: - fix build warning. Changelog v1 ~ v5: - add comments, code fixups and cleanups. Signed-off-by: Eunchul Kim <chulspro.kim@samsung.com> Signed-off-by: Jinyoung Jeon <jy0.jeon@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-12-15drm/exynos: add iommu support for ippEunchul Kim1-0/+18
This patch adds iommu support for IPP subsystem framework. For this, it adds subdrv_probe/remove callback to enable or disable ipp iommu. We can get or put device address to a gem handle from user through exynos_drm_gem_get/put_dma_addr(). Signed-off-by: Eunchul Kim <chulspro.kim@samsung.com> Signed-off-by: Jinyoung Jeon <jy0.jeon@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-12-15drm/exynos: add ipp subsystemEunchul Kim7-0/+2536
This patch adds Image Post Processing(IPP) support for exynos drm driver. IPP supports image scaler/rotator and input/output DMA operations using IPP subsystem framework to control FIMC, Rotator and GSC hardware and supports some user interfaces for user side. And each IPP-based drivers support Memory to Memory operations with various converting. And in case of FIMC hardware, it also supports Writeback and Display output operations through local path. Features: - Memory to Memory operation support. - Various pixel formats support. - Image scaling support. - Color Space Conversion support. - Image crop operation support. - Rotate operation support to 90, 180 or 270 degree. - Flip operation support to vertical, horizontal or both. - Writeback operation support to display blended image of FIMD fifo on screen A summary to IPP Subsystem operations: First of all, user should get property capabilities from IPP subsystem and set these properties to hardware registers for desired operations. The properties could be pixel format, position, rotation degree and flip operation. And next, user should set source and destination buffer data using DRM_EXYNOS_IPP_QUEUE_BUF ioctl command with gem handles to source and destinition buffers. And next, user can control user-desired hardware with desired operations such as play, stop, pause and resume controls. And finally, user can aware of dma operation completion and also get destination buffer that it contains user-desried result through dequeue command. IOCTL commands: - DRM_EXYNOS_IPP_GET_PROPERTY . get ipp driver capabilitis and id. - DRM_EXYNOS_IPP_SET_PROPERTY . set format, position, rotation, flip to source and destination buffers - DRM_EXYNOS_IPP_QUEUE_BUF . enqueue/dequeue buffer and make event list. - DRM_EXYNOS_IPP_CMD_CTRL . play/stop/pause/resume control. Event: - DRM_EXYNOS_IPP_EVENT . a event to notify dma operation completion to user side. Basic control flow: Open -> Get properties -> User choose desired IPP sub driver(FIMC, Rotator or GSCALER) -> Set Property -> Create gem handle -> Enqueue to source and destination buffers -> Command control(Play) -> Event is notified to User -> User gets destinition buffer complated -> (Enqueue to source and destination buffers -> Event is notified to User) * N -> Queue/Dequeue to source and destination buffers -> Command control(Stop) -> Free gem handle -> Close Changelog v1 ~ v5: - added comments, code fixups and cleanups. Signed-off-by: Eunchul Kim <chulspro.kim@samsung.com> Signed-off-by: Jinyoung Jeon <jy0.jeon@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-12-15drm/exynos: support device tree for fimdJoonyoung Shim1-0/+21
This adds the of_match_table to exynos-drm fimd driver to be probed from the device tree. Changelog v2: - fix build error without CONFIG_OF. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-12-14radeon: fix regression with eviction since evict caching changesDave Airlie1-2/+2
Since 0d0b3e7443bed6b49cb90fe7ddc4b5578a83a88d drm/radeon: use cached memory when evicting for vram on non agp evicting from TTM would try and evict to TTM instead of system, not so good. This should fix: https://bugs.freedesktop.org/show_bug.cgi?id=58272 Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-12-14drm/radeon: add more pedantic checks in the CP DMA checkerAlex Deucher1-0/+24
non-mem-to-mem transfers require dw aligned byte count. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-12-14drm/radeon: bump version for CS ioctl support for async DMAAlex Deucher1-1/+2
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-12-14drm/radeon: enable the async DMA rings in the CS ioctlAlex Deucher2-0/+13
This enables the functionality added in the previous patches. Userspace acceleration drivers can use the CS ioctl to submit command buffers to the async DMA rings. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2012-12-14drm/radeon: add VM CS parser support for async DMA on cayman/TN/SIAlex Deucher3-0/+118
Allows us to use async DMA from userspace. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>