Patch series to support mstandby mode handling and enabling runtime PM support for DMA driver. Changes from v1: - fixed runtime_status issue if channel linking feature is used. - fixed context restore issue during off mode. - removed sysconfig register access during DMA context/restore The review comments and alignment can be found at: http://thread.gmane.org/gmane.linux.ports.arm.omap/53150 Baseline: git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git Branch: omap-for-linus commit 94a06b74e724caabcf0464c81527cfbcae0c8aff Merge: 0dde52a 9062511 Author: Tony Lindgren <tony@xxxxxxxxxxx> Note: For OMAP2420 and OMAP2430, the patch series is tested on top of v2.6.38-rc4 since boot fails with latest mainline for the above OMAP's. Build: - omap1_defconfig - omap2plus_defconfig Boot test: - OMAP1710 H3 - OMAP2420 H4 - OMAP2430 SDP - OMAP3430 Zoom2 - OMAP3630 Zoom3 - OMAP4430 Blaze DMA tests: The following dma test code is used for testing OMAP2+ boards: git://gitorious.org/omap-test/dmatest.git Apart from that, offmode testing is done for OMAP3430-Zoom2 using the procedure: echo 1 > /debug/pm_debug/sleep_while_idle echo 1 > /debug/pm_debug/enable_off_mode echo 5 > /sys/devices/platform/omap/omap_uart.0/sleep_timeout echo 5 > /sys/devices/platform/omap/omap_uart.1/sleep_timeout echo 5 > /sys/devices/platform/omap/omap_uart.2/sleep_timeout With the above steps, core off mode count gets increasing if the the board is idle for more than 5 seconds. Also, DMA transfers are done with forever option using: insmod ./dmatest.ko linking=1 forever=1 forever_period=1024 debug=1 The /sys/devices/platform/omap/omap_dma_system.0/power/runtime_status was verified and after completion of the tests, runtime_status will be always suspended. (Special thanks to Kevin Hilman for identifying runtime_status count issue with DMA linking option). G, Manjunath Kondaiah (4): OMAP2+: PM: omap device: API's for handling mstandby mode OMAP2+: DMA: prevent races while setting M idle mode to nostandby OMAP: PM: DMA: Enable runtime pm OMAP: DMA: Fix: context restore during off mode arch/arm/mach-omap1/dma.c | 1 + arch/arm/mach-omap2/dma.c | 16 ++ arch/arm/mach-omap2/omap_hwmod.c | 42 ++++++ arch/arm/plat-omap/dma.c | 194 +++++++++++++++++++++---- arch/arm/plat-omap/include/plat/dma.h | 1 + arch/arm/plat-omap/include/plat/omap_device.h | 2 + arch/arm/plat-omap/include/plat/omap_hwmod.h | 4 +- arch/arm/plat-omap/omap_device.c | 64 ++++++++ 8 files changed, 293 insertions(+), 31 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
