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path: root/drivers/dma/ipu/ipu_idmac.c
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2020-11-09dmaengine: ipu_idmac: remove redundant irqsave and restore in hardIRQBarry Song
Running in hardIRQ, disabling IRQ is redundant since hardIRQ has disabled IRQ. This patch removes the irqsave and irqstore to save some instruction cycles. Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Link: https://lore.kernel.org/r/20201027215252.25820-2-song.bao.hua@hisilicon.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-18dmaengine: ipu: convert tasklets to use new tasklet_setup() APIAllen Pais
In preparation for unconditionally passing the struct tasklet_struct pointer to all tasklet callbacks, switch to using the new tasklet_setup() and from_tasklet() to pass the tasklet pointer explicitly. Signed-off-by: Romain Perier <romain.perier@gmail.com> Signed-off-by: Allen Pais <allen.lkml@gmail.com> Link: https://lore.kernel.org/r/20200831103542.305571-12-allen.lkml@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner
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>
2018-06-12treewide: Use array_size() in vmalloc()Kees Cook
The vmalloc() function has no 2-factor argument form, so multiplication factors need to be wrapped in array_size(). This patch replaces cases of: vmalloc(a * b) with: vmalloc(array_size(a, b)) as well as handling cases of: vmalloc(a * b * c) with: vmalloc(array3_size(a, b, c)) This does, however, attempt to ignore constant size factors like: vmalloc(4 * 1024) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( vmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | vmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( vmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(u8) * COUNT + COUNT , ...) | vmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | vmalloc( - sizeof(char) * COUNT + COUNT , ...) | vmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( vmalloc( - sizeof(TYPE) * (COUNT_ID) + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT_ID + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT_CONST + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vmalloc( - sizeof(THING) * (COUNT_ID) + array_size(COUNT_ID, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT_ID + array_size(COUNT_ID, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT_CONST + array_size(COUNT_CONST, sizeof(THING)) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ vmalloc( - SIZE * COUNT + array_size(COUNT, SIZE) , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( vmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( vmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( vmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( vmalloc(C1 * C2 * C3, ...) | vmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants. @@ expression E1, E2; constant C1, C2; @@ ( vmalloc(C1 * C2, ...) | vmalloc( - E1 * E2 + array_size(E1, E2) , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2016-08-08dmaengine: ipu: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-22dmaengine: ipu-idmac: Split device_controlMaxime Ripard
Split the device_control callback of the IPU IDMAC driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-10-20dma: ipu: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-07-25dmaengine: ipu: use return value of request_irqVinod Koul
Commit - 653e67f7e5: "dmaengine: inherit debug settings from the subsystem for subdirectories" introduced debug option for subdirectories too This exposed issue with ipu driver not using return value For now just warn users about it Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-13dmaengine: ipu: fix warnings from 64-bit dma_addr_t printoutsOlof Johansson
This resolves a number of warnings such as the below when building with 64-bit dma_addr_t on arm: drivers/dma/ipu/ipu_idmac.c:1235:2: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t' [-Wformat=] ..by upcasting to u64 and using %llx. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-25dma: ipu: remove unnecessary platform_set_drvdata()Jingoo Han
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-05ipu_idmac: re-use dma_cookie_status()Andy Shevchenko
It's better to use generic dma_cookie_status() that allows user to get standard possible return codes independently of the DMAC driver in charge. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-04-15dma: ipu: ipu_idmac: Fix section mismatchFabio Estevam
Since commit 84c1e63c12 (dma: Remove erroneous __exit and __exit_p() references) the following section mismatch happens: WARNING: drivers/built-in.o(.text+0x20f94): Section mismatch in reference from the function ipu_remove() to the function .exit.text:ipu_idmac_exit() The function ipu_remove() references a function in an exit section. Often the function ipu_idmac_exit() has valid usage outside the exit section and the fix is to remove the __exit annotation of ipu_idmac_exit. Remove the '__exit' annotation from ipu_idmac_exit in order to fix it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Maxin B. John <maxin.john@enea.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-04-15dma: Remove erroneous __exit and __exit_p() referencesMaxin B. John
Removing the annotation with __exit and referencing with __exit_p() present in dma driver module remove hooks. Part of the __devexit and __devexit_p() purge. Signed-off-by: Maxin B. John <maxin.john@enea.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-01-12dma: ipu_idmac: reuse is_slave_direction helperAndy Shevchenko
The is_slave_direction helps to check if the transfer type is slave. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2012-10-15dma: ipu: rename mach/ipu.h to include/linux/dma/ipu-dma.hShawn Guo
The header ipu.h really belongs to dma subsystem rather than imx platform. Rename it to ipu-dma.h and put it into include/linux/dma/. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: linux-media@vger.kernel.org Cc: linux-fbdev@vger.kernel.org
2012-07-01dma: ipu: remove the use of ipu_platform_dataShawn Guo
The struct ipu_platform_data is used by platform code to pass MXC_IPU_IRQ_START to ipu-core driver. We can save it by having ipu-core driver call irq_alloc_descs to get the irq_base. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
2012-04-25dmaengine i.MX ipu: clk_prepare/unprepare clockSascha Hauer
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-03-21dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclicAlexandre Bounine
Add context parameter to device_prep_slave_sg() and device_prep_dma_cyclic() interfaces to allow passing client/target specific information associated with the data transfer. Modify all affected DMA engine drivers. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: consolidate initialization of cookiesRussell King - ARM Linux
Provide a common function to initialize a channels cookie values. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: provide a common function for completing a dma descriptorRussell King - ARM Linux
Provide a common function to do the cookie mechanics for completing a DMA descriptor. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: consolidate assignment of DMA cookiesRussell King - ARM Linux
Everyone deals with assigning DMA cookies in the same way (it's part of the API so they should be), so lets consolidate the common code into a helper function to avoid this duplication. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: add private header fileRussell King - ARM Linux
Add a local private header file to contain definitions and declarations which should only be used by DMA engine drivers. We also fix linux/dmaengine.h to use LINUX_DMAENGINE_H to guard against multiple inclusion. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: move last completed cookie into generic dma_chan structureRussell King - ARM Linux
Every DMA engine implementation declares a last completed dma cookie in their private dma channel structures. This is pointless, and forces driver specific code. Move this out into the common dma_chan structure. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2011-12-08i.MX IPU DMA: Fix wrong burstsize settingsSascha Hauer
The burstsize (npb in struct chan_param_mem) is set in ipu_ch_param_set_size() once. The number of allowed pixels in a burst depend on the pixel format and the rotation mode. For 16bit formats 16 pixels are allowed whereas for 32bit formats only 8 pixels are allowed. Set these values correctly in ipu_ch_param_set_size() and do not overwrite them afterwards. We do not support rotation right now, so ignore this case. This patch fixes the wrong burstsize setting of 16 pixels for 32bpp. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2011-11-17Merge branch 'dma_slave_direction' into next_test_dirnVinod Koul
resolved conflicts: drivers/media/video/mx3_camera.c
2011-11-06Merge branch 'modsplit-Oct31_2011' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux * 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include <linux/module.h> acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include <linux/module.h> net: sch_generic remove redundant use of <linux/module.h> net: inet_timewait_sock doesnt need <linux/module.h> ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h
2011-11-03[media] dmaengine: ipu-idmac: add support for the DMA_PAUSE controlGuennadi Liakhovetski
To support multi-size buffers in the mx3_camera V4L2 driver we have to be able to stop DMA on a channel without releasing descriptors and completely halting the hardware. Use the DMA_PAUSE control to implement this mode. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31drivers/dma: Add module.h to files implicitly using it.Paul Gortmaker
Fix files that were implicitly using module.h but not calling it out for inclusion directly. We'll break those once we remove the implicit presence otherwise [With input from Uwe Kleine-König <u.kleine-koenig@pengutronix.de>] Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-27dmaengine: move drivers to dma_transfer_directionVinod Koul
fixup usage of dma direction by introducing dma_transfer_direction, this patch moves dma/drivers/* to use new enum Cc: Jassi Brar <jaswinder.singh@linaro.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Viresh Kumar <viresh.kumar@st.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Mika Westerberg <mika.westerberg@iki.fi> Cc: H Hartley Sweeten <hartleys@visionengravers.com> Cc: Li Yang <leoli@freescale.com> Cc: Zhang Wei <zw@zh-kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Shawn Guo <shawn.guo@freescale.com> Cc: Yong Wang <yong.y.wang@intel.com> Cc: Tomoya MORINAGA <tomoya-linux@dsn.lapis-semi.com> Cc: Boojin Kim <boojin.kim@samsung.com> Cc: Barry Song <Baohua.Song@csr.com> Acked-by: Mika Westerberg <mika.westerberg@iki.fi> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@st.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2011-08-01Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (37 commits) Improve slave/cyclic DMA engine documentation dmaengine: pl08x: handle the rest of enums in pl08x_width DMA: PL08x: cleanup selection of burst size DMA: PL08x: avoid recalculating cctl at each prepare DMA: PL08x: cleanup selection of buswidth DMA: PL08x: constify plchan->cd and plat->slave_channels DMA: PL08x: separately store source/destination cctl DMA: PL08x: separately store source/destination slave address DMA: PL08x: clean up LLI debugging DMA: PL08x: select LLI bus only once per LLI setup DMA: PL08x: remove unused constants ARM: mxs-dma: reset after disable channel dma: intel_mid_dma: remove redundant pci_set_drvdata calls dma: mxs-dma: fix unterminated platform_device_id table dmaengine: pl330: make platform data optional dmaengine: imx-sdma: return proper error if kzalloc fails pch_dma: Fix CTL register access issue dmaengine: mxs-dma: skip request_irq for NO_IRQ dmaengine/coh901318: fix slave submission semantics dmaengine/ste_dma40: allow memory buswidth/burst to be configured ... Fix trivial whitespace conflict in drivers/dma/mv_xor.c
2011-06-21net: remove mm.h inclusion from netdevice.hAlexey Dobriyan
Remove linux/mm.h inclusion from netdevice.h -- it's unused (I've checked manually). To prevent mm.h inclusion via other channels also extract "enum dma_data_direction" definition into separate header. This tiny piece is what gluing netdevice.h with mm.h via "netdevice.h => dmaengine.h => dma-mapping.h => scatterlist.h => mm.h". Removal of mm.h from scatterlist.h was tried and was found not feasible on most archs, so the link was cutoff earlier. Hope people are OK with tiny include file. Note, that mm_types.h is still dragged in, but it is a separate story. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-06dma: ipu_idmac.c: use resource_size in ioremapH Hartley Sweeten
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Anatolij Gustschin <agust@denx.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-02-14dma: ipu_idmac: do not lose valid received data in the irq handlerAnatolij Gustschin
Currently when two or more buffers are queued by the camera driver and so the double buffering is enabled in the idmac, we lose one frame comming from CSI since the reporting of arrival of the first frame is deferred by the DMAIC_7_EOF interrupt handler and reporting of the arrival of the last frame is not done at all. So when requesting N frames from the image sensor we actually receive N - 1 frames in user space. The reason for this behaviour is that the DMAIC_7_EOF interrupt handler misleadingly assumes that the CUR_BUF flag is pointing to the buffer used by the IDMAC. Actually it is not the case since the CUR_BUF flag will be flipped by the FSU when the FSU is sending the <TASK>_NEW_FRM_RDY signal when new frame data is delivered by the CSI. When sending this singal, FSU updates the DMA_CUR_BUF and the DMA_BUFx_RDY flags: the DMA_CUR_BUF is flipped, the DMA_BUFx_RDY is cleared, indicating that the frame data is beeing written by the IDMAC to the pointed buffer. DMA_BUFx_RDY is supposed to be set to the ready state again by the MCU, when it has handled the received data. DMAIC_7_CUR_BUF flag won't be flipped here by the IPU, so waiting for this event in the EOF interrupt handler is wrong. Actually there is no spurious interrupt as described in the comments, this is the valid DMAIC_7_EOF interrupt indicating reception of the frame from CSI. The patch removes code that waits for flipping of the DMAIC_7_CUR_BUF flag in the DMAIC_7_EOF interrupt handler. As the comment in the current code denotes, this waiting doesn't help anyway. As a result of this removal the reporting of the first arrived frame is not deferred to the time of arrival of the next frame and the drivers software flag 'ichan->active_buffer' is in sync with DMAIC_7_CUR_BUF flag, so the reception of all requested frames works. This has been verified on the hardware which is triggering the image sensor by the programmable state machine, allowing to obtain exact number of frames. On this hardware we do not tolerate losing frames. This patch also removes resetting the DMA_BUFx_RDY flags of all channels in ipu_disable_channel() since transfers on other DMA channels might be triggered by other running tasks and the buffers should always be ready for data sending or reception. Signed-off-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-05-17DMAENGINE: extend the control command to include an argLinus Walleij
This adds an argument to the DMAengine control function, so that we can later provide control commands that need some external data passed in through an argument akin to the ioctl() operation prototype. [dan.j.williams@intel.com: fix up some missed conversions] Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26dmaengine: provide helper for setting txstateDan Williams
Simple conditional struct filler to cut out some duplicated code. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26DMAENGINE: generic channel status v2Linus Walleij
Convert the device_is_tx_complete() operation on the DMA engine to a generic device_tx_status()operation which can return three states, DMA_TX_RUNNING, DMA_TX_COMPLETE, DMA_TX_PAUSED. [dan.j.williams@intel.com: update for timberdale] Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Maciej Sosnowski <maciej.sosnowski@intel.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Li Yang <leoli@freescale.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Magnus Damm <damm@opensource.se> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Joe Perches <joe@perches.com> Cc: Roland Dreier <rdreier@cisco.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26DMAENGINE: generic slave control v2Linus Walleij
Convert the device_terminate_all() operation on the DMA engine to a generic device_control() operation which can now optionally support also pausing and resuming DMA on a certain channel. Implemented for the COH 901 318 DMAC as an example. [dan.j.williams@intel.com: update for timberdale] Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Maciej Sosnowski <maciej.sosnowski@intel.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Li Yang <leoli@freescale.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Magnus Damm <damm@opensource.se> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Joe Perches <joe@perches.com> Cc: Roland Dreier <rdreier@cisco.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-03Merge branch 'coh' into dmaengineDan Williams
2010-02-10async-tx: fix buffer submission error handling in ipu_idma.cGuennadi Liakhovetski
If submitting new buffer failed, a wrong descriptor gets completed and it doesn't check, if a callback is at all defined, which can lead to an Oops. Fix these bugs and make ipu_update_channel_buffer() void, because it never fails. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-02-02dma: cases IPU_PIX_FMT_BGRA32, BGR32 and ABGR32 are the same in ↵Roel Kluin
ipu_ch_param_set_size() In these cases the same statements are executed. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-05-12dma: fix ipu_idmac.c to not discard the last queued bufferGuennadi Liakhovetski
This also fixes the case of a single queued buffer, for example, when taking a single frame snapshot with the mx3_camera driver. Reported-by: Agustin Ferrin Pozuelo <gatoguan-os@yahoo.com> Tested-by: Agustin Ferrin Pozuelo <gatoguan-os@yahoo.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-05-05ipu_idmac: Use disable_irq_nosync() from within irq handlers.Ben Nizette
disable_irq() should wait for all running handlers to complete before returning. As such, if it's used to disable an interrupt from that interrupt's handler it will deadlock. This replaces the dangerous instances with the _nosync() variant which doesn't have this problem. Note the 2 handlers in question are only used #ifdef DEBUG so I imagine these code paths don't get hit often. Signed-off-by: Ben Nizette <bn@niasdigital.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-04-03Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: dma: Add SoF and EoF debugging to ipu_idmac.c, minor cleanup dw_dmac: add cyclic API to DW DMA driver dmaengine: Add privatecnt to revert DMA_PRIVATE property dmatest: add dma interrupts and callbacks dmatest: add xor test dmaengine: allow dma support for async_tx to be toggled async_tx: provide __async_inline for HAS_DMA=n archs dmaengine: kill some unused headers dmaengine: initialize tx_list in dma_async_tx_descriptor_init dma: i.MX31 IPU DMA robustness improvements dma: improve section assignment in i.MX31 IPU DMA driver dma: ipu_idmac driver cosmetic clean-up dmaengine: fail device registration if channel registration fails
2009-04-02dma: Add SoF and EoF debugging to ipu_idmac.c, minor cleanupGuennadi Liakhovetski
Add Start-of-Frame and End-of-Frame debugging to ipu_idmac.c, in the future it might also be needed for the actual video processing in mx3-camera, at which point, the ISRs will have to be transferred to mx3_camera.c, for which ipu_irq_map() and ipu_irq_unmap() functions will have to be exported. Also simplify a couple of pointer-dereferences. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmaengine: initialize tx_list in dma_async_tx_descriptor_initDan Williams
Centralize this common initialization (and one case where ipu_idmac is duplicating ->chan initialization). Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dma: i.MX31 IPU DMA robustness improvementsGuennadi Liakhovetski
Add DMA error handling to the ISR, move common code fragments to functions, fix scatter-gather element queuing in the ISR, survive channel freeing and re-allocation in a quick succession. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dma: improve section assignment in i.MX31 IPU DMA driverGuennadi Liakhovetski
The i.MX31 IPU DMA driver is a platform driver, but doesn't need hotplug, so we can use __init and __exit function attributes. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dma: ipu_idmac driver cosmetic clean-upGuennadi Liakhovetski
Remove superfluous semicolons, update comments. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-13MX31 clkdev supportSascha Hauer
This patch adds clkdev support for i.MX31. This is done in a similar way done previously for i.MX27 Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-03-04ipu_idmac: fix spinlock typeLuotao Fu
fix a probably accidently dropped reference operator while calling spin_unlock_restore to an ipu lock. Signed-off-by: Luotao Fu <l.fu@pengutronix.de> Cc: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-30 23:15:27 +0000