- 05 7月, 2013 32 次提交
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由 Ludovic Desroches 提交于
For most devices the FIFO configuration is the same i.e. when half FIFO size is available/filled, a source/destination request is serviced. But USART devices have to do it when there is enough space/data available to perform a single AHB access so the ASAP configuration. Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Ludovic Desroches 提交于
DMA-cell content is a concatenation of several values. In order to keep this stuff human readable, macros are introduced. The values for the FIFO configuration are not the same as the ones used in the configuration register in order to keep backward compatibility. Most devices use the half FIFO configuration but USART ones have to use the ASAP configuration. This parameter was not initially planed to be into the at91 dma dt binding. The third cell will be used to store this parameter, it will become a concatenation of the FIFO configuration and of the peripheral ID. In order to keep backward compatibility i.e. FIFO configuration is equal to 0, we have to perform a translation since the value to put in the register to set half FIFO is 1. Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Maarten ter Huurne 提交于
Signed-off-by: NMaarten ter Huurne <maarten@treewalker.org> Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Acked-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Lars-Peter Clausen 提交于
Now that all users of the custom jz4740 DMA API have been converted to use the dmaengine API instead we can remove the custom API and move all the code talking to the hardware to the dmaengine driver. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Acked-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Lars-Peter Clausen 提交于
Register a device for the newly added jz4740 dmaengine driver. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Acked-by: NRalf Baechle <ralf@linux-mips.org> [manually edited to align struct assignment] Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Lars-Peter Clausen 提交于
This patch adds dmaengine support for the JZ4740 DMA controller. For now the driver will be a wrapper around the custom JZ4740 DMA API. Once all users of the custom JZ4740 DMA API have been converted to the dmaengine API the custom API will be removed and direct hardware access will be added to the dmaengine driver. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Maarten ter Huurne 提交于
Previously, it was assumed that the DMA controller clock is not gated when the kernel starts running. While that is the power-on state, it is safer to not rely on that. Signed-off-by: NMaarten ter Huurne <maarten@treewalker.org> Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Acked-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Qiao Zhou 提交于
mask dma irq when disabling dma channel, so that interrupt status will not be set and interrupt won't come again. Signed-off-by: NQiao Zhou <zhouqiao@marvell.com> Acked-by: NZhangfei Gao <zhangfei.gao@gmail.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Mark Brown 提交于
As pointed out by Arnd Bergmann there is a get_signal macro definied in linux/signal.h which can conflict with the platform data callback function of the same name leading to confusing errors from the compiler (especially if signal.h manages to get pulled into the driver itself due to header dependencies). Avoid such errors by renaming get_signal and put_signal in the platform data to get_xfer_signal and put_xfer_signal. Signed-off-by: NMark Brown <broonie@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Vinod Koul 提交于
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Andy Shevchenko 提交于
This is the PCI part of the DesignWare DMAC driver. The controller is usually used in the Intel hardware such as Intel Medfield. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Andy Shevchenko 提交于
To simplify the driver development let's split driver to library and platform code parts. It helps us to add PCI driver in future. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> [Fixed compile error and few checkpatch issues] Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Andy Shevchenko 提交于
The dw_dmac driver is going to be split into multiple files. To make this more convenient move it to an own directory. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Andy Shevchenko 提交于
devm_ioremap_resource does sanity checks on the given resource. No need to duplicate this in the driver. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Will Deacon 提交于
The microcode bus address (pl330_dmac.mcode_bus) is currently a u32, which fails to compile when building on a system with 64-bit bus addresses. This patch uses dma_addr_t to represent the address instead. Cc: Jassi Brar <jaswinder.singh@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Acked-by: NJassi Brar <jaswinder.singh@linaro.org> Acked-by: NGrant Likely <grant.likely@linaro.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Will Deacon 提交于
The PL330 driver probes the peripheral and primecell IDs of the device to make sure that it is indeed an AMBA PL330. However, it does this by making byte accesses to a device mapping of the word-aligned ID registers, which is either UNPREDICTABLE or generates an alignment fault (depending on the presence of the virtualisation extensions). Rather than fix this code, we can actually rip most of it out and let the AMBA bus driver correctly do the probing for us. Cc: Jassi Brar <jaswinder.singh@linaro.org> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Acked-by: NJassi Brar <jaswinder.singh@linaro.org> Acked-by: NGrant Likely <grant.likely@linaro.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Shawn Guo 提交于
Update imx-sdma driver to adopt generic DMA device tree bindings. It calls of_dma_controller_register() with imx-sdma specific of_dma_xlate to get the generic DMA device tree helper support. The #dma-cells for imx-sdma must be 3, which includes request ID, peripheral type and priority. The existing way of requesting channel, clients directly call dma_request_channel(), still work there, and will be removed after all imx-sdma clients get converted to generic DMA device tree helper. Signed-off-by: NShawn Guo <shawn.guo@linaro.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com> Acked-by: NArnd Bergmann <arnd@arndb.de>
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由 Rongjun Ying 提交于
read SIRFSOC_DMA_CH_ADDR register to get current dma transfer position, then update dma residue so that things like ALSA drivers work as ALSA drivers need the right residue value. Signed-off-by: NRongjun Ying <Rongjun.Ying@csr.com> Signed-off-by: NBarry Song <Baohua.Song@csr.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Dmitry Osipenko 提交于
Lock scenario: Channel 1 was allocated and prepared as slave_sg, used and freed. Now preparation of cyclic dma on channel 1 will fail with err "DMA configuration conflict" because tdc->isr_handler still setted to handle_once_dma_done. This happens because tegra_dma_abort_all() won't be called on channel freeing if pending list is empty and channel not busy. We need to clear isr_handler on channel freeing to avoid locking. Signed-off-by: NDmitry Osipenko <digetx@gmail.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Dmitry Osipenko 提交于
Fixed err msg params order on irq request fail. Signed-off-by: NDmitry Osipenko <digetx@gmail.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Denis Efremov 提交于
EXPORT_SYMBOL and inline directives are contradictory to each other. The patch fixes this inconsistency. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: NDenis Efremov <yefremov.denis@gmail.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Jingoo Han 提交于
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d063 (device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Jingoo Han 提交于
The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d063 (device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Fabio Estevam 提交于
Fix the following sparse warning: drivers/dma/mxs-dma.c:696:17: warning: symbol 'mxs_dma_xlate' was not declared. Should it be static? Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com> Acked-by: NShawn Guo <shawn.guo@linaro.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Jingoo Han 提交于
Use the wrapper functions for getting and setting the driver data using platform_device instead of using dev_{get,set}_drvdata() with &pdev->dev, so we can directly pass a struct platform_device. Also, unnecessary dev_set_drvdata() is removed, because the driver core clears the driver data to NULL after device_release or on probe failure. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Elen Song 提交于
Add support for returning the residue for current transfer cookie by reading the transfered buffer size(BTSIZE) in CTRLA register. For a single buffer cookie, the descriptor length minus BTSIZE can get the residue. For a lli cookie, remain_desc will record remain descriptor length when last descriptor finish, the remain_desc minus BTSIZE can get the current residue. If the cookie has completed successfully, the residue will be zero. If the cookie is in progress, it will be the number of bytes yet to be transferred. If get residue error, the cookie will be turn into error status. Check dma fifo to see if data remain, let issue pending finish remain work if there is. Signed-off-by: NElen Song <elen.song@atmel.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Elen Song 提交于
In one dma transfer, the data transfer width can be configured and it is limited by source or destination peripheral width, tx_width will save the transfer width, but for memcpy, either source or destination transfer width is taken as tx_width. Signed-off-by: NElen Song <elen.song@atmel.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Nicolas Ferre 提交于
No modification in CFG register configuration, just rearrange bits directives to group logically and make it more readable. Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com> Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Nicolas Ferre 提交于
Peripheral handshaking identification numbers can be bigger than 15, so new fields have been created in the CFG register. Add macros to take this modification into account and use them in at_dma_xlate() function. Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com> Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Nicolas Ferre 提交于
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com> Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Markus Pargmann 提交于
imxdma->dev is used for dev_warn before it was set. Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de> Reviewed-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Markus Pargmann 提交于
Adding devicetree support for imx-dma driver. Use driver name for function 'imx_dma_is_general_purpose' because the devicename for devicetree initialized devices is different. Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de> Reviewed-by: NArnd Bergmann <arnd@arndb.de> Reviewed-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 12 6月, 2013 2 次提交
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由 Lars-Peter Clausen 提交于
Both of_dma_nbcells field of the of_dma_controller and the args_count field of the dma_spec are initialized by parsing the #dma-cells attribute of their device tree node. So if the device tree nodes of a DMA controller and the dma_spec match this means that of_dma_nbcells and args_count will also match. So the second test in the of_dma_find_controller loop is redundant because given the first test yields true the second test will also yield true. So we can safely remove the test whether of_dma_nbcells matches args_count. Since this was the last user of the of_dma_nbcells field we can remove it altogether. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Lars-Peter Clausen 提交于
There is no sensible reason why #dma-cells shouldn't be allowed to be 0. It is completely up to the DMA controller how many additional parameters, besides the phandle, it needs to identify a channel. E.g. for DMA controller with only one channel or for DMA controllers which don't have a restriction on which channel can be used for which peripheral it completely legitimate to not require any additional parameters. Also fixes the following warning: drivers/dma/of-dma.c: In function 'of_dma_controller_register': drivers/dma/of-dma.c:67:7: warning: 'nbcells' may be used uninitialized in this function Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 09 6月, 2013 6 次提交
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由 Linus Torvalds 提交于
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由 Mikulas Patocka 提交于
This patch fixes warnings due to missing lock on write error path. WARNING: at fs/hpfs/hpfs_fn.h:353 hpfs_truncate+0x75/0x80 [hpfs]() Hardware name: empty Pid: 26563, comm: dd Tainted: P O 3.9.4 #12 Call Trace: hpfs_truncate+0x75/0x80 [hpfs] hpfs_write_begin+0x84/0x90 [hpfs] _hpfs_bmap+0x10/0x10 [hpfs] generic_file_buffered_write+0x121/0x2c0 __generic_file_aio_write+0x1c7/0x3f0 generic_file_aio_write+0x7c/0x100 do_sync_write+0x98/0xd0 hpfs_file_write+0xd/0x50 [hpfs] vfs_write+0xa2/0x160 sys_write+0x51/0xa0 page_fault+0x22/0x30 system_call_fastpath+0x1a/0x1f Signed-off-by: NMikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Cc: stable@kernel.org # 2.6.39+ Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull timer fixes from Thomas Gleixner: - Trivial: unused variable removal - Posix-timers: Add the clock ID to the new proc interface to make it useful. The interface is new and should be functional when we reach the final 3.10 release. - Cure a false positive warning in the tick code introduced by the overhaul in 3.10 - Fix for a persistent clock detection regression introduced in this cycle * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timekeeping: Correct run-time detection of persistent_clock. ntp: Remove unused variable flags in __hardpps posix-timers: Show clock ID in proc file tick: Cure broadcast false positive pending bit warning
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git://git.secretlab.ca/git/linux由 Linus Torvalds 提交于
Pull irqdomain bug fixes from Grant Likely: "This branch contains a set of straight forward bug fixes to the irqdomain code and to a couple of drivers that make use of it." * tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux: irqchip: Return -EPERM for reserved IRQs irqdomain: document the simple domain first_irq kernel/irq/irqdomain.c: before use 'irq_data', need check it whether valid. irqdomain: export irq_domain_add_simple
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由 Grant Likely 提交于
The irqdomain core will report a log message for any attempted map call that fails unless the error code is -EPERM. This patch changes the Versatile irq controller drivers to use -EPERM because it is normal for a subset of the IRQ inputs to be marked as reserved on the various Versatile platforms. Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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由 Linus Walleij 提交于
The first_irq needs to be zero to get a linear domain and that comes with special semantics. We want to simplify this going forward but some documentation never hurts. Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@linaro.org>
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