kernel/git/stable/linux.git/arch/arm/common/edma.c, branch master

ARM/dmaengine: edma: Merge the two drivers under drivers/dma/

2015-10-14T14:27:11+00:00

Move the code out from arch/arm/common and merge it inside of the dmaengine driver. This change is done with as minimal (if eny) functional change to the code as possible to avoid introducing regression. Signed-off-by: Peter Ujfalusi Acked-by: Tony Lindgren Signed-off-by: Vinod Koul

ARM/dmaengine: edma: Remove limitation on the number of eDMA controllers

2015-10-14T14:27:11+00:00

Since the driver stack no longer depends on lookup with id number in a global array of pointers, the limitation for the number of eDMAs are no longer needed. We can handle as many eDMAs in legacy and DT boot as we have memory for them to allocate the needed structures. Signed-off-by: Peter Ujfalusi Signed-off-by: Vinod Koul

ARM/dmaengine: edma: Public API to use private struct pointer

2015-10-14T14:27:11+00:00

Instead of relying on indexes pointing to edma private date in the global pointer array, pass the private data pointer via the public API. Signed-off-by: Peter Ujfalusi Signed-off-by: Vinod Koul

ARM: common: edma: Internal API to use pointer to 'struct edma'

2015-10-14T14:27:11+00:00

Merge the iomem into the 'struct edma' and change the internal (static) functions to use pointer to the edma_cc instead of the ctlr number. Signed-off-by: Peter Ujfalusi Signed-off-by: Vinod Koul

ARM/dmaengine: edma: Move of_dma_controller_register to the dmaengine driver

2015-10-14T14:27:11+00:00

If the of_dma_controller is registered in the non dmaengine driver we could have race condition: the of_dma_controller has been registered, but the dmaengine driver is not yet probed. Drivers requesting DMA channels during this window will fail since we do not yet have dmaengine drivers registered. Signed-off-by: Peter Ujfalusi Signed-off-by: Vinod Koul

ARM: davinci/common: Convert edma driver to handle one eDMA instance per driver

2015-10-14T14:27:11+00:00

Currently we have one device created to handle all (maximum 2) eDMAs in the system. With this change all eDMA instance will have it's own device/driver. This change is needed for further cleanups in the eDMA driver stack since the one device/driver to handle all eDMAs in the system was not flexible enough and prevents the upcoming work. Signed-off-by: Peter Ujfalusi Acked-by: Sekhar Nori Signed-off-by: Vinod Koul

ARM: common: edma: Remove unused functions

2015-10-14T14:25:34+00:00

We no longer have users for these functions so they can be removed. Remove also unused enums from the header file. Signed-off-by: Peter Ujfalusi Signed-off-by: Vinod Koul

ARM: common: edma: Fix channel parameter for irq callbacks

2015-10-14T14:25:34+00:00

In case when the interrupt happened for the second eDMA the channel number was incorrectly passed to the client driver. Signed-off-by: Peter Ujfalusi CC: Signed-off-by: Vinod Koul

ARM: common: edma: clear completion interrupts on stop

2015-05-06T20:27:01+00:00

When stopping a DMA transfer with interrupts disabled it is possible that the DMA transfer completes before the events are cleared. In this case the completion interrupt will be pending, causing a completion callback after the transfer was stopped. By clearing the completion interrupt for the stopping channel it is ensured that no completion event will be generated after the stop. Signed-off-by: John Ogness Acked-by: Peter Ujfalusi Signed-off-by: Greg Kroah-Hartman

Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2014-12-09T22:48:22+00:00

Pull ARM SoC driver updates from Arnd Bergmann: "These are changes for drivers that are intimately tied to some SoC and for some reason could not get merged through the respective subsystem maintainer tree. The largest single change here this time around is the Tegra iommu/memory controller driver, which gets updated to the new iommu DT binding. More drivers like this are likely to follow for the following merge window, but we should be able to do those through the iommu maintainer. Other notable changes are: - reset controller drivers from the reset maintainer (socfpga, sti, berlin) - fixes for the keystone navigator driver merged last time - at91 rtc driver changes related to the at91 cleanups - ARM perf driver changes from Will Deacon - updates for the brcmstb_gisb driver" * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits) clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers clocksource: arch_timer: Fix code to use physical timers when requested memory: Add NVIDIA Tegra memory controller support bus: brcmstb_gisb: Add register offset tables for older chips bus: brcmstb_gisb: Look up register offsets in a table bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses bus: brcmstb_gisb: Make the driver buildable on MIPS of: Add NVIDIA Tegra memory controller binding ARM: tegra: Move AHB Kconfig to drivers/amba amba: Add Kconfig file clk: tegra: Implement memory-controller clock serial: samsung: Fix serial config dependencies for exynos7 bus: brcmstb_gisb: resolve section mismatch ARM: common: edma: edma_pm_resume may be unused ARM: common: edma: add suspend resume hook powerpc/iommu: Rename iommu_[un]map_sg functions rtc: at91sam9: add DT bindings documentation rtc: at91sam9: use clk API instead of relying on AT91_SLOW_CLOCK ARM: at91: add clk_lookup entry for RTT devices rtc: at91sam9: rework the Kconfig description ...