Hello, This patchset changes the way the runtime PM is implemented in PL330 DMA engine driver. The main goal of such change is to add support for audio power domain to Exynos5 SoCs (5250, 542x, 5433, probably others) and let it to be properly turned off, when no audio is being used. Switching to non-irq-safe runtime PM is needed to properly let power domain to be turned off (irqsafe runtime PM keeps power domain turned on all the time) and to integrate with clock controller's runtime PM (this cannot be workarounded any other way, PL330 uses clocks from the controller, which belongs to the same power domain). For more details of the proposed change to PL330 driver see patch #3. Audio power domain on Exynos5 SoCs contains following hardware modules: 1. clock controller 2. pin controller 3. PL330 DMA controller 4. I2S audio controller Patches for adding/fixing runtime PM for each of the above device will be handled separately. Runtime PM patches for clock controllers is possible and has been proposed in the following thread (pending review, patch for runtime PM for Exynos Audio subsystem will be added in v4 soon): https://www.spinics.net/lists/arm-kernel/msg538122.html Runtime PM support for Exynos pin controller will be posted soon in a separate thread. Exynos I2S driver already supports runtime PM, but some fixes are needed for it and they will be also posted soon. Patches are based on linux-next with my PL330 runtime PM fix patch applied (which I assume will be merged as a fix to v4.10): https://patchwork.kernel.org/patch/9477695/ Best regards Marek Szyprowski Samsung R&D Institute Poland Patch summary: Marek Szyprowski (3): dmaengine: pl330: remove pdata based initialization dmaengine: Forward slave device pointer to of_xlate callback dmaengine: pl330: Don't require irq-safe runtime PM drivers/dma/amba-pl08x.c | 2 +- drivers/dma/at_hdmac.c | 4 +- drivers/dma/at_xdmac.c | 2 +- drivers/dma/bcm2835-dma.c | 2 +- drivers/dma/coh901318.c | 2 +- drivers/dma/cppi41.c | 2 +- drivers/dma/dma-jz4780.c | 2 +- drivers/dma/dmaengine.c | 2 +- drivers/dma/dw/platform.c | 2 +- drivers/dma/edma.c | 4 +- drivers/dma/fsl-edma.c | 2 +- drivers/dma/img-mdc-dma.c | 2 +- drivers/dma/imx-dma.c | 2 +- drivers/dma/imx-sdma.c | 2 +- drivers/dma/k3dma.c | 2 +- drivers/dma/mmp_pdma.c | 2 +- drivers/dma/mmp_tdma.c | 2 +- drivers/dma/moxart-dma.c | 2 +- drivers/dma/mxs-dma.c | 2 +- drivers/dma/nbpfaxi.c | 2 +- drivers/dma/of-dma.c | 20 +++-- drivers/dma/pl330.c | 166 +++++++++++++++++++--------------------- drivers/dma/pxa_dma.c | 2 +- drivers/dma/qcom/bam_dma.c | 2 +- drivers/dma/sh/rcar-dmac.c | 2 +- drivers/dma/sh/shdma-of.c | 2 +- drivers/dma/sh/usb-dmac.c | 2 +- drivers/dma/sirf-dma.c | 2 +- drivers/dma/st_fdma.c | 2 +- drivers/dma/ste_dma40.c | 2 +- drivers/dma/stm32-dma.c | 2 +- drivers/dma/sun4i-dma.c | 2 +- drivers/dma/sun6i-dma.c | 2 +- drivers/dma/tegra20-apb-dma.c | 2 +- drivers/dma/tegra210-adma.c | 2 +- drivers/dma/xilinx/xilinx_dma.c | 2 +- drivers/dma/xilinx/zynqmp_dma.c | 2 +- drivers/dma/zx296702_dma.c | 2 +- include/linux/amba/pl330.h | 35 --------- include/linux/of_dma.h | 17 ++-- 40 files changed, 139 insertions(+), 175 deletions(-) delete mode 100644 include/linux/amba/pl330.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
