From e8689e63d4d2046079f2db9d494ac05c6885ac0c Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 28 Sep 2010 15:57:37 +0200 Subject: dmaengine: driver for the ARM PL080/PL081 PrimeCells v5 This creates a DMAengine driver for the ARM PL080/PL081 PrimeCells based on the implementation earlier submitted by Peter Pearse. This is working like a charm for memcpy and slave DMA to the PL011 PrimeCell on the PB11MPCore. This DMA controller is used in mostly unmodified form in the ARM RealView and Versatile platforms, in the ST-Ericsson Nomadik, and in the ST SPEAr platform. It has been converted to use the header from the Samsung PL080 derivate instead of its own defintions. The Samsungs have a custom driver in their mach-* folders though, atleast we can share the register definitions. Cc: Peter Pearse Cc: Ben Dooks Cc: Kukjin Kim Cc: Alessandro Rubini Acked-by: Viresh Kumar Signed-off-by: Linus Walleij [GFP_KERNEL to GFP_NOWAIT in pl08x_prep_dma_memcpy] Signed-off-by: Dan Williams --- drivers/dma/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/dma/Makefile') diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile index 72bd70384d8..0b690e7e438 100644 --- a/drivers/dma/Makefile +++ b/drivers/dma/Makefile @@ -25,3 +25,4 @@ obj-$(CONFIG_TIMB_DMA) += timb_dma.o obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o obj-$(CONFIG_PL330_DMA) += pl330.o obj-$(CONFIG_PCH_DMA) += pch_dma.o +obj-$(CONFIG_AMBA_PL08X) += amba-pl08x.o -- cgit v1.2.3-18-g5258 From 1ec1e82f2510e2bdcb6268ed74aa79e1a7bc9594 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 30 Sep 2010 13:56:34 +0000 Subject: dmaengine: Add Freescale i.MX SDMA support This patch adds support for the Freescale i.MX SDMA engine. The SDMA engine is a scatter/gather DMA engine which is implemented as a seperate coprocessor. SDMA needs its own firmware which is requested using the standard request_firmware mechanism. The firmware has different entry points for each peripheral type, so drivers have to pass the peripheral type to the DMA engine which in turn picks the correct firmware entry point from a table contained in the firmware image itself. The original Freescale code also supports support for transfering data to the internal SRAM which needs different entry points to the firmware. Support for this is currently not implemented. Also, support for the ASRC (asymmetric sample rate converter) is skipped. I took a very simple approach to implement dmaengine support. Only a single descriptor is statically assigned to a each channel. This means that transfers can't be queued up but only a single transfer is in progress. This simplifies implementation a lot and is sufficient for the usual device/memory transfers. Signed-off-by: Sascha Hauer Reviewed-by: Linus Walleij Signed-off-by: Dan Williams --- drivers/dma/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/dma/Makefile') diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile index 72bd70384d8..3ed7babd3a9 100644 --- a/drivers/dma/Makefile +++ b/drivers/dma/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o obj-$(CONFIG_SH_DMAE) += shdma.o obj-$(CONFIG_COH901318) += coh901318.o coh901318_lli.o obj-$(CONFIG_AMCC_PPC440SPE_ADMA) += ppc4xx/ +obj-$(CONFIG_IMX_SDMA) += imx-sdma.o obj-$(CONFIG_TIMB_DMA) += timb_dma.o obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o obj-$(CONFIG_PL330_DMA) += pl330.o -- cgit v1.2.3-18-g5258 From 1f1846c6ceed07c03ef036a27864befe0f773997 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 6 Oct 2010 10:25:55 +0200 Subject: dmaengine: Add Freescale i.MX1/21/27 DMA driver This driver is currently implemented as a user to the old i.MX DMA API. This allows us to convert each user of the old API to the dmaengine API one by one. Once this is done the old DMA driver can be merged into the i.MX dmaengine driver. V2: remove some debug leftovers and unused variables Signed-off-by: Sascha Hauer Acked-by: Linus Walleij Signed-off-by: Dan Williams --- drivers/dma/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/dma/Makefile') diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile index 3ed7babd3a9..79ac75b5106 100644 --- a/drivers/dma/Makefile +++ b/drivers/dma/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_SH_DMAE) += shdma.o obj-$(CONFIG_COH901318) += coh901318.o coh901318_lli.o obj-$(CONFIG_AMCC_PPC440SPE_ADMA) += ppc4xx/ obj-$(CONFIG_IMX_SDMA) += imx-sdma.o +obj-$(CONFIG_IMX_DMA) += imx-dma.o obj-$(CONFIG_TIMB_DMA) += timb_dma.o obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o obj-$(CONFIG_PL330_DMA) += pl330.o -- cgit v1.2.3-18-g5258