From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752674AbbC0M1d (ORCPT ); Fri, 27 Mar 2015 08:27:33 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:59235 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752391AbbC0M1a (ORCPT ); Fri, 27 Mar 2015 08:27:30 -0400 From: Peter Ujfalusi To: , , CC: , , , , , , , Subject: [PATCH v3 0/7] dmaengine/dra7x: DMA router (crossbar support) Date: Fri, 27 Mar 2015 14:26:46 +0200 Message-ID: <1427459213-14611-1-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.3.3 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Vinod: is it OK if I send the Documnetation/dmanegine/ update a bit later when we agree on what form it should be? Changes since v2: - not using regmap for the TI crossbar driver. Changes since v1: - Comments from Russell King and Paul Bolle addressed: - Use the added defined in the omap-dma changes - MODULE_* removed from the ti-dma-crossbar driver. - DMA router documentation: do not limit the #dma-cells to be the same as the dma controller's #dma-cells. It might be possible to have a router which needs more information than the DMA controller (direct request pairing for example) - Use defines in the ti-dma-crossbar driver - Binding document for the ti-dma-crossbar driver Intro mail from v1: The series adds support for DMA router type of devices. They are used in SoCs which has more peripherals with DMA request lines than the DMA controller can handle. The router itself is not part of the DMA controller and it's operation should be transparent (as it is in the HW) for the SW stack. This series takes into accound the comments Sricharan received for his version of the crossbar driver: https://lkml.org/lkml/2014/3/7/199 This implementation is not tied to any DMA driver so it is possible to use the framework by other vendors, also ACPI version of binding can be easy enough to be added. Regards, Peter --- Peter Ujfalusi (7): dmaengine: of_dma: Support for DMA routers Documentation: devicetree: dma: Binding documentation for TI DMA crossbar dmaengine: Add driver for TI DMA crossbar on DRA7x dmaengine: omap-dma: Use defines for dma channels and request count dmaengine: omap-dma: Take DMA request number from DT if it is available dmaengine: omap-dma: Remove mapping between virtual channels and requests ARM: DTS: dra7x: Integrate sDMA crossbar Documentation/devicetree/bindings/dma/dma.txt | 28 ++++ .../devicetree/bindings/dma/ti-dma-crossbar.txt | 52 ++++++ arch/arm/boot/dts/dra7.dtsi | 57 ++++--- drivers/dma/Kconfig | 4 + drivers/dma/Makefile | 1 + drivers/dma/dmaengine.c | 7 + drivers/dma/of-dma.c | 92 +++++++++++ drivers/dma/omap-dma.c | 25 ++- drivers/dma/ti-dma-crossbar.c | 179 +++++++++++++++++++++ include/linux/dmaengine.h | 17 ++ include/linux/of_dma.h | 21 +++ 11 files changed, 455 insertions(+), 28 deletions(-) create mode 100644 Documentation/devicetree/bindings/dma/ti-dma-crossbar.txt create mode 100644 drivers/dma/ti-dma-crossbar.c -- 2.3.3 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: [PATCH v3 0/7] dmaengine/dra7x: DMA router (crossbar support) Date: Fri, 27 Mar 2015 14:26:46 +0200 Message-ID: <1427459213-14611-1-git-send-email-peter.ujfalusi@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: vinod.koul@intel.com, tony@atomide.com, linux@arm.linux.org.uk Cc: grant.likely@linaro.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, nm@ti.com List-Id: devicetree@vger.kernel.org Hi, Vinod: is it OK if I send the Documnetation/dmanegine/ update a bit later when we agree on what form it should be? Changes since v2: - not using regmap for the TI crossbar driver. Changes since v1: - Comments from Russell King and Paul Bolle addressed: - Use the added defined in the omap-dma changes - MODULE_* removed from the ti-dma-crossbar driver. - DMA router documentation: do not limit the #dma-cells to be the same as the dma controller's #dma-cells. It might be possible to have a router which needs more information than the DMA controller (direct request pairing for example) - Use defines in the ti-dma-crossbar driver - Binding document for the ti-dma-crossbar driver Intro mail from v1: The series adds support for DMA router type of devices. They are used in SoCs which has more peripherals with DMA request lines than the DMA controller can handle. The router itself is not part of the DMA controller and it's operation should be transparent (as it is in the HW) for the SW stack. This series takes into accound the comments Sricharan received for his version of the crossbar driver: https://lkml.org/lkml/2014/3/7/199 This implementation is not tied to any DMA driver so it is possible to use the framework by other vendors, also ACPI version of binding can be easy enough to be added. Regards, Peter --- Peter Ujfalusi (7): dmaengine: of_dma: Support for DMA routers Documentation: devicetree: dma: Binding documentation for TI DMA crossbar dmaengine: Add driver for TI DMA crossbar on DRA7x dmaengine: omap-dma: Use defines for dma channels and request count dmaengine: omap-dma: Take DMA request number from DT if it is available dmaengine: omap-dma: Remove mapping between virtual channels and requests ARM: DTS: dra7x: Integrate sDMA crossbar Documentation/devicetree/bindings/dma/dma.txt | 28 ++++ .../devicetree/bindings/dma/ti-dma-crossbar.txt | 52 ++++++ arch/arm/boot/dts/dra7.dtsi | 57 ++++--- drivers/dma/Kconfig | 4 + drivers/dma/Makefile | 1 + drivers/dma/dmaengine.c | 7 + drivers/dma/of-dma.c | 92 +++++++++++ drivers/dma/omap-dma.c | 25 ++- drivers/dma/ti-dma-crossbar.c | 179 +++++++++++++++++++++ include/linux/dmaengine.h | 17 ++ include/linux/of_dma.h | 21 +++ 11 files changed, 455 insertions(+), 28 deletions(-) create mode 100644 Documentation/devicetree/bindings/dma/ti-dma-crossbar.txt create mode 100644 drivers/dma/ti-dma-crossbar.c -- 2.3.3 From mboxrd@z Thu Jan 1 00:00:00 1970 From: peter.ujfalusi@ti.com (Peter Ujfalusi) Date: Fri, 27 Mar 2015 14:26:46 +0200 Subject: [PATCH v3 0/7] dmaengine/dra7x: DMA router (crossbar support) Message-ID: <1427459213-14611-1-git-send-email-peter.ujfalusi@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, Vinod: is it OK if I send the Documnetation/dmanegine/ update a bit later when we agree on what form it should be? Changes since v2: - not using regmap for the TI crossbar driver. Changes since v1: - Comments from Russell King and Paul Bolle addressed: - Use the added defined in the omap-dma changes - MODULE_* removed from the ti-dma-crossbar driver. - DMA router documentation: do not limit the #dma-cells to be the same as the dma controller's #dma-cells. It might be possible to have a router which needs more information than the DMA controller (direct request pairing for example) - Use defines in the ti-dma-crossbar driver - Binding document for the ti-dma-crossbar driver Intro mail from v1: The series adds support for DMA router type of devices. They are used in SoCs which has more peripherals with DMA request lines than the DMA controller can handle. The router itself is not part of the DMA controller and it's operation should be transparent (as it is in the HW) for the SW stack. This series takes into accound the comments Sricharan received for his version of the crossbar driver: https://lkml.org/lkml/2014/3/7/199 This implementation is not tied to any DMA driver so it is possible to use the framework by other vendors, also ACPI version of binding can be easy enough to be added. Regards, Peter --- Peter Ujfalusi (7): dmaengine: of_dma: Support for DMA routers Documentation: devicetree: dma: Binding documentation for TI DMA crossbar dmaengine: Add driver for TI DMA crossbar on DRA7x dmaengine: omap-dma: Use defines for dma channels and request count dmaengine: omap-dma: Take DMA request number from DT if it is available dmaengine: omap-dma: Remove mapping between virtual channels and requests ARM: DTS: dra7x: Integrate sDMA crossbar Documentation/devicetree/bindings/dma/dma.txt | 28 ++++ .../devicetree/bindings/dma/ti-dma-crossbar.txt | 52 ++++++ arch/arm/boot/dts/dra7.dtsi | 57 ++++--- drivers/dma/Kconfig | 4 + drivers/dma/Makefile | 1 + drivers/dma/dmaengine.c | 7 + drivers/dma/of-dma.c | 92 +++++++++++ drivers/dma/omap-dma.c | 25 ++- drivers/dma/ti-dma-crossbar.c | 179 +++++++++++++++++++++ include/linux/dmaengine.h | 17 ++ include/linux/of_dma.h | 21 +++ 11 files changed, 455 insertions(+), 28 deletions(-) create mode 100644 Documentation/devicetree/bindings/dma/ti-dma-crossbar.txt create mode 100644 drivers/dma/ti-dma-crossbar.c -- 2.3.3