"G, Manjunath Kondaiah" <manjugk@xxxxxx> writes: > This patch series is remaining part of dma hwmod to support pm runtime > and for handling mstandby mode for all applicable DMA mstandby mode errata. This is still not runtime-suspending when I use my DMA test in linking mode. If I put a large enough period between transfers, it should autosuspend during transfers. It seems to do auto-suspend and resume once, but then it never suspends again. I tested with my dmatest module[1], and loaded with: # insmod ./dmatest.ko linking=1 forever=1 forever_period=1024 Not only does it not auto-suspend between transfers (which I expected), it also doesn't suspend after removing the module which stops all active channels. Kevin [1] git://gitorious.org/omap-test/dmatest.git > The alignment for pm runtime API's usage is at: > http://thread.gmane.org/gmane.linux.ports.arm.omap/51588/focus=52493 > http://thread.gmane.org/gmane.linux.ports.arm.omap/50762/focus=50840 > > The alignment for handling mstandby mode errata handling is at: > http://thread.gmane.org/gmane.linux.ports.arm.omap/47398/focus=47426 > http://thread.gmane.org/gmane.linux.ports.arm.omap/47479/focus=47537 > > Testing: > Compile tested for > - omap1_defconfig > - omap2plus_defconfig > > Boot test on: > - OMAP1710-H3 > - OMAP2420-H4 > - OMAP3430-LDP > - OMAP3630-Zoom3 > - OMAP4430-Blaze > > DMA memory to memory test cases(including chaining) are executed for > all the above boards and for each test case, > /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. > > Apart from that, offmode testing is done for OMAP3430-LDP 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. > > Baseline: > Applies cleanly on top of mainline 2.6.38-rc6: > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git > commit f5412be599602124d2bdd49947b231dd77c0bf99 > Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Date: Mon Feb 21 17:25:52 2011 -0800 > > Linux 2.6.38-rc6 > > Note: OMAP1 is tested on top of 2.6.38-rc5 since rc6 is broken for omap1 build > > Patch Summary: > ============== > G, Manjunath Kondaiah (2): > OMAP2+: PM: omap device: API's for handling mstandby mode > OMAP2+: DMA: prevent races while setting M idle mode to nostandby > > Manjunath G Kondaiah (1): > OMAP: PM: DMA: Enable runtime pm > > 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 | 190 +++++++++++++++++++++---- > 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(+), 27 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
