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path: root/drivers/dma/tegra20-apb-dma.c
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2013-01-09dma: tegra: implement flags parameters for cyclic transferLaxman Dewangan
The flag parameter is added in the cyclic transfer request. Use the flag option of: - DMA_PREP_INTERRUPT for enabling interrupt. - DMA_CTRL_ACK for deciding whether ack is requred or not for descriptor. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> CC: <stable@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-01-08dma: tegra: add support for Tegra114 SoCLaxman Dewangan
NVIDIA's Tegra114 has APB DMA controller which has 32 dma channels and support support channel wise pause control. Add support for Tegra114 which uses the channel wise pause control hardware feature. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-01-08dma: tegra: add support for channel wise pauseLaxman Dewangan
NVIDIA's some SoCs like Tegra114 support the channel wise pause control inplace of global pause which pauses all DMA channels. When SoCs support the channel wise pause control then it uses the global pause for clock gating for register access as well as all DMA channel pause. Hence DMA registers are not accessible if DMAs are globally paused on these new SoCs. Add support for channel wise pause feature if SoCs support it. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-01-03Drivers: dma: remove __dev* attributes.Greg Kroah-Hartman
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Dan Williams <djbw@fb.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Barry Song <baohua.song@csr.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Alexander Duyck <alexander.h.duyck@intel.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28dma: remove use of __devinitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Li Yang <leoli@freescale.com> Cc: Zhang Wei <zw@zh-kernel.org> Cc: Barry Song <baohua.song@csr.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28dma: remove use of __devexit_pBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Barry Song <baohua.song@csr.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-10Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull slave-dmaengine updates from Vinod Koul: "This time we have Andy updates on dw_dmac which is attempting to make this IP block available as PCI and platform device though not fully complete this time. We also have TI EDMA moving the dma driver to use dmaengine APIs, also have a new driver for mmp-tdma, along with bunch of small updates. Now for your excitement the merge is little unusual here, while merging the auto merge on linux-next picks wrong choice for pl330 (drivers/dma/pl330.c) and this causes build failure. The correct resolution is in linux-next. (DMA: PL330: Fix build error) I didn't back merge your tree this time as you are better than me so no point in doing that for me :)" Fixed the pl330 conflict as in linux-next, along with trivial header file conflicts due to changed includes. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (29 commits) dma: tegra: fix interrupt name issue with apb dma. dw_dmac: fix a regression in dwc_prep_dma_memcpy dw_dmac: introduce software emulation of LLP transfers dw_dmac: autoconfigure data_width or get it via platform data dw_dmac: autoconfigure block_size or use platform data dw_dmac: get number of channels from hardware if possible dw_dmac: fill optional encoded parameters in register structure dw_dmac: mark dwc_dump_chan_regs as inline DMA: PL330: return ENOMEM instead of 0 from pl330_alloc_chan_resources DMA: PL330: Remove redundant runtime_suspend/resume functions DMA: PL330: Remove controller clock enable/disable dmaengine: use kmem_cache_zalloc instead of kmem_cache_alloc/memset DMA: PL330: Set the capability of pdm0 and pdm1 as DMA_PRIVATE ARM: EXYNOS: Set the capability of pdm0 and pdm1 as DMA_PRIVATE dma: tegra: use list_move_tail instead of list_del/list_add_tail mxs/dma: Enlarge the CCW descriptor area to 4 pages dw_dmac: utilize slave_id to pass request line dmaengine: mmp_tdma: add dt support dmaengine: mmp-pdma support spi: davici - make davinci select edma ...
2012-10-09Merge tag 'sound-3.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "This contains pretty many small commits covering fairly large range of files in sound/ directory. Partly because of additional API support and partly because of constantly developed ASoC and ARM stuff. Some highlights: - Introduced the helper function and documentation for exposing the channel map via control API, as discussed in Plumbers; most of PCI drivers are covered, will follow more drivers later - Most of drivers have been replaced with the new PM callbacks (if the bus is supported) - HD-audio controller got the support of runtime PM and the support of D3 clock-stop. Also changing the power_save option in sysfs kicks off immediately to enable / disable the power-save mode. - Another significant code change in HD-audio is the rewrite of firmware loading code. Other than that, most of changes in HD-audio are continued cleanups and standardization for the generic auto parser and bug fixes (HBR, device-specific fixups), in addition to the support of channel-map API. - Addition of ASoC bindings for the compressed API, used by the mid-x86 drivers. - Lots of cleanups and API refreshes for ASoC codec drivers and DaVinci. - Conversion of OMAP to dmaengine. - New machine driver for Wolfson Microelectronics Bells. - New CODEC driver for Wolfson Microelectronics WM0010. - Enhancements to the ux500 and wm2000 drivers - A new driver for DA9055 and the support for regulator bypass mode." Fix up various arm soc header file reorg conflicts. * tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (339 commits) ALSA: hda - Add new codec ALC283 ALC290 support ALSA: hda - avoid unneccesary indices on "Headphone Jack" controls ALSA: hda - fix indices on boost volume on Conexant ALSA: aloop - add locking to timer access ALSA: hda - Fix hang caused by race during suspend. sound: Remove unnecessary semicolon ALSA: hda/realtek - Fix detection of ALC271X codec ALSA: hda - Add inverted internal mic quirk for Lenovo IdeaPad U310 ALSA: hda - make Realtek/Sigmatel/Conexant use the generic unsol event ALSA: hda - make a generic unsol event handler ASoC: codecs: Add DA9055 codec driver ASoC: eukrea-tlv320: Convert it to platform driver ALSA: ASoC: add DT bindings for CS4271 ASoC: wm_hubs: Ensure volume updates are handled during class W startup ASoC: wm5110: Adding missing volume update bits ASoC: wm5110: Add OUT3R support ASoC: wm5110: Add AEC loopback support ASoC: wm5110: Rename EPOUT to HPOUT3 ASoC: arizona: Add more clock rates ASoC: arizona: Add more DSP options for mixer input muxes ...
2012-10-04dma: tegra: fix interrupt name issue with apb dma.Laxman Dewangan
When watching the interrupts through /proc/interrupts, the name of the interrupts are blank or garbage. The reason is the pointer passed for devname during irq registration is stack and so it get changed after dma registration completes. Allocate the pointer as part of dma channel and pass this pointer as the devname for irq registration to avoid change of name. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reported-by: Stephen Warren <swarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-09-22dmaengine: Pass flags via device_prep_dma_cyclic() callbackPeter Ujfalusi
Change the parameter list of device_prep_dma_cyclic() so the DMA drivers can receive the flags coming from clients. This feature can be used during audio operation to disable all audio related interrupts when the DMA_PREP_INTERRUPT is cleared from the flags. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-14dma: tegra: use list_move_tail instead of list_del/list_add_tailWei Yongjun
Using list_move_tail() instead of list_del() + list_add_tail(). spatch with a semantic match is used to found this problem. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-09-13Merge branch 'ofdeviceiddata' of git://git.pengutronix.de/git/ukl/linux into ↵Olof Johansson
next/fixes-non-critical From "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>: this is the 2nd version of this series whose goal is to make struct of_device_id.data const. Conceptually a driver must not modify the data contained there so making it const is the right thing. v1 of this series was sent with Message-id: 1342182734-321-1-git-send-email-y. Changes since then are: - powerpc fixes - several new consts that were found by Arnd that are possible after patch 19. Arnd suggested to take this series via arm-soc late for 3.6 in one go because patch 19 depends on the former patches but is a precondition to the latter and it fixes a few warnings. So getting it in via the respective maintainer trees would need a much bigger coordination effort. That means I prefer getting Acks over you taking the patch. Vinod Koul already took dmaengine: at_hdmac: add a few const qualifiers that is in next-20120723 as 7fd63ccdad72 now. Vinod, I don't follow your pull requests, but assuming you didn't let it already pull for 3.6 I suggest you drop it from your queue and I just take your Ack. This series was build tested for arm (all defconfigs) and powerpc (all defconfigs and an allyesconfig) and grep didn't find more issues. As before it introduces a warning in drivers/regulator/twl-regulator.c. This driver does modify its .of_match_table when a device is bound which doesn't fits the concept of independant devices. Arnd noticed another new warning in drivers/scsi/qlogicpti.c that isn't that easy to resolve, because the pointer to (now) const data is passed as first argument to scsi_host_alloc. To fix that properly struct Scsi_Host.hostt needs to get a const, too. Alternatively I could introduce a cast removing the const, but I don't like that. * 'ofdeviceiddata' of git://git.pengutronix.de/git/ukl/linux: (25 commits) dma: tegra: make data used as *of_device_id.data const can: mpc5xxx_can: make data used as *of_device_id.data const macintosh/mediabay: make data used as *of_device_id.data const i2c/mpc: make data used as *of_device_id.data const mfd/da9052: make i2c_device_id array const powerpc/fsl_msi: drop unneeded cast to non-const pointer gpio/gpio-omap: make platformdata used as *of_device_id.data const of: add const to struct *of_device_id.data dma: tegra: make tegra_dma.chip_data a pointer to const data watchdog/mpc8xxx: add a const qualifier powerpc/celleb_pci: add a const qualifier powerpc/fsl_msi: add a const qualifier powerpc/83xx: add a const qualifier macintosh/mediabay: add a const qualifier mmc/omap_hsmmc: add a const qualifier i2c/mpc: add a const qualifier i2c/i2c-omap: add a const qualifier gpio/mpc8xxx: add a const qualifier gpio/gpio-omap.c: add a const qualifier misc/atmel_tc: make atmel_tc.tcb_config member point to const data Signed-off-by: Arnd Bergmann <arnd@arndb.de> [olof: repulled a v3 version of the branch that rebased to add some more acked-bys and added one more patch on top for tegra] Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-11dma: tegra: make data used as *of_device_id.data constLaxman Dewangan
Since of_device_id.data is declared as a pointer to const data a few more consts can be added in this driver. [ukl: split Laxman's patch to prevent warnings in the middle of the series. Original patch was sent with msgid 1346217447-19730-1-git-send-email-ldewangan@nvidia.com] Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2012-09-11dma: tegra: make tegra_dma.chip_data a pointer to const dataLaxman Dewangan
This prepares *of_device_id.data becoming const. Without this change the following warning would occur: drivers/dma/tegra20-apb-dma.c: In function 'tegra_dma_probe': drivers/dma/tegra20-apb-dma.c:1210:9: warning: assignment discards 'const' qualifier from pointer target type [enabled by default] [ukl: split Laxman's patch to prevent warnings in the middle of the series. Original patch was sent with msgid 1346217447-19730-1-git-send-email-ldewangan@nvidia.com] Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2012-08-13dma: tegra: enable/disable dma clockLaxman Dewangan
Enable the DMA clock when allocating channel and disable clock when freeing channels. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-31dma: tegra: enable/disable dma clockLaxman Dewangan
Enable the DMA clock when allocating channel and disable clock when freeing channels. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-13dma: tegra: rename driver and compatible to match with dtsLaxman Dewangan
Rename the compatible name and driver name to match with tegra dts file and as per clock driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-13dma: tegra: fix residual calculation for cyclic caseLaxman Dewangan
In cyclic mode of DMA, the byte transferred can be more than the requested size and in this case, calculating residuals based on the current position of DMA transfer to bytes requested i.e. bytes required to transfer to reach bytes requested from current DMA position. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-27dma: tegra: set DMA_CYCLIC capabilityLaxman Dewangan
Tegra's APB DMA driver support the cyclic mode of data transfer and hence setting the DMA_CYCLIC caps for dma channels. This is require when generic sound dmaengine pcm driver request for dma channel with CYCLIC capability. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-27dma: tegra: do not set transfer desc flag to DMA_CTRL_ACK in cyclic modeLaxman Dewangan
The sound dmaengine pcm driver uses the dma in cyclic mode and it does not ack the transfer descriptor after transfer stops. This may lead to hold that desc in chip's dma driver and does not allow to reuse/free that descriptors. Hence not enabling flag DMA_CTRL_ACK when dma runs in cyclic mode. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-27dma: tegra: add clk_prepare/clk_unpreparePrashant Gaikwad
Use clk_prepare/clk_unprepare as required by the generic clk framework. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-27dma: tegra: use sg_dma_address() for getting dma buffer addressLaxman Dewangan
Use the sg_dma_address() to get the segment buffer address for DMA transfer in place of sg_phys() which returns the physical address of an sg entry. The sg_dma_address() returns the correct buffer memory address for DMA transfer. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-06-08dma: tegra: add dmaengine based dma driverLaxman Dewangan
Add dmaengine based NVIDIA's Tegra APB DMA driver. This driver support the slave mode of data transfer from peripheral to memory and vice versa. The driver supports for the cyclic and non-cyclic mode of data transfer. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>