- 05 7月, 2013 2 次提交
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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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- 18 5月, 2013 1 次提交
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由 Wolfram Sang 提交于
devm_ioremap_resource does sanity checks on the given resource. No need to duplicate this in the driver. Signed-off-by: NWolfram Sang <wsa@the-dreams.de> Acked-by: NStephen Warren <swarren@nvidia.com>
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- 03 5月, 2013 1 次提交
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由 Laxman Dewangan 提交于
Implement suspend/resume callbacks to store APB DMA channel's register on suspend and restore APB DMA channel's register on resume. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 15 4月, 2013 1 次提交
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由 Stephen Warren 提交于
Tegra only supports, and always enables, device tree. Remove all ifdefs and runtime checks for DT support from the driver. Signed-off-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 14 2月, 2013 1 次提交
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由 Andy Shevchenko 提交于
There is no need to assign 0 to residue, because dma_cookie_status() does this for us. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 29 1月, 2013 1 次提交
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由 Prashant Gaikwad 提交于
Migrate Tegra clock support to drivers/clk/tegra, this involves moving: 1. definition of tegra_cpu_car_ops to clk.c 2. definition of reset functions to clk-peripheral.c 3. change parent of cpu clock. 4. Remove legacy clock initialization. 5. Initialize clocks using DT. 6. Remove all instance of mach/clk.h Signed-off-by: NPrashant Gaikwad <pgaikwad@nvidia.com> [swarren: use to_clk_periph_gate().] Signed-off-by: NStephen Warren <swarren@nvidia.com>
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- 26 1月, 2013 1 次提交
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由 Thierry Reding 提交于
Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages so all explicit error messages can be removed from the failure code paths. Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 09 1月, 2013 1 次提交
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> CC: <stable@vger.kernel.org> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 08 1月, 2013 2 次提交
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Reviewed-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Reviewed-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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- 04 1月, 2013 1 次提交
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由 Greg Kroah-Hartman 提交于
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: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 29 11月, 2012 2 次提交
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由 Bill Pemberton 提交于
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: NBill 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: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Bill Pemberton 提交于
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: NBill Pemberton <wfp5p@virginia.edu> Acked-by: NBarry Song <baohua.song@csr.com> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 04 10月, 2012 1 次提交
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Reported-by: NStephen Warren <swarren@nvidia.com> Acked-by: NStephen Warren <swarren@nvidia.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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- 22 9月, 2012 1 次提交
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由 Peter Ujfalusi 提交于
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: NPeter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com> Acked-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NVinod Koul <vinod.koul@linux.intel.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 14 9月, 2012 1 次提交
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由 Wei Yongjun 提交于
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: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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- 11 9月, 2012 2 次提交
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Acked-by: NVinod Koul <vinod.koul@linux.intel.com> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Acked-by: NVinod Koul <vinod.koul@linux.intel.com> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
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- 13 8月, 2012 1 次提交
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由 Laxman Dewangan 提交于
Enable the DMA clock when allocating channel and disable clock when freeing channels. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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- 31 7月, 2012 1 次提交
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由 Laxman Dewangan 提交于
Enable the DMA clock when allocating channel and disable clock when freeing channels. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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- 13 7月, 2012 2 次提交
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由 Laxman Dewangan 提交于
Rename the compatible name and driver name to match with tegra dts file and as per clock driver. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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- 27 6月, 2012 4 次提交
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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由 Prashant Gaikwad 提交于
Use clk_prepare/clk_unprepare as required by the generic clk framework. Signed-off-by: NPrashant Gaikwad <pgaikwad@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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- 08 6月, 2012 1 次提交
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由 Laxman Dewangan 提交于
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: NLaxman Dewangan <ldewangan@nvidia.com> Acked-by: NStephen Warren <swarren@wwwdotorg.org> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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