From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Glass Date: Fri, 30 Jan 2015 12:04:50 -0700 Subject: [U-Boot] [RFC PATCH 0/7] RFC: dm: Add USB support Message-ID: <1422644697-3735-1-git-send-email-sjg@chromium.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de This series adds basic driver model support to USB. The intent is to permit the various subsystems (OHCI, EHCI, XHCI) to co-exist and allow any number of USB ports of different types. So far the absolute limit on the number of USB devices is only slightly relaxed. Only USB controllers have a real driver model device. USB devices (including the hub in the controller) are not modelled as driver model devices. This is for two reasons: - it is easier since we don't need to bind a whole lot of devices when scanning - the two main USB devices (block devices and Ethernet) don't have driver mode support yet anyway, so it would be pointless. However the recent network RFC has encouraged me to send this. The basic approach is to set up the driver model structures in parallel to what already exists rather than to replace them. This allows both driver model and legacy to be used for USB, although not with the same board. So far only XHCI is supported. As an example the Exynos XHCI driver is converted to driver model. I would appreciate comments before going further. Caveats: - sandbox code is incomplete and there are no tests - 'usb stop' does not remove existing devices (I have not yet settled on the best approach) - the usb.h changes need to be split correctly into the patches once they are final This series is available at u-boot-dm/usb-working. Simon Glass (7): dm: usb: Add a uclass for USB controllers dm: usb: Support driver model in exynos XHCI dm: usb: Adjust users of the USB stack to work with driver model dm: usb: WIP sandbox USB implementation dm: core: Add a function to get the uclass data for a device arm: Show relocated PC/LR in the register dump dm: exynos: Enable driver model for snow XHCI Makefile | 1 + arch/arm/lib/interrupts.c | 13 +- arch/sandbox/dts/sandbox.dts | 20 +++ arch/sandbox/include/asm/processor.h | 0 common/cmd_usb.c | 74 ++++++++--- common/usb.c | 28 +++-- common/usb_hub.c | 13 +- common/usb_storage.c | 148 +++++++++++++--------- drivers/core/device.c | 10 ++ drivers/usb/dev/Makefile | 10 ++ drivers/usb/dev/sandbox-flash.c | 95 +++++++++++++++ drivers/usb/dev/sandbox-hub.c | 116 ++++++++++++++++++ drivers/usb/dev/usb-emul-uclass.c | 16 +++ drivers/usb/eth/usb_ether.c | 46 +++++-- drivers/usb/host/Makefile | 5 + drivers/usb/host/usb-sandbox.c | 151 +++++++++++++++++++++++ drivers/usb/host/usb-uclass.c | 227 ++++++++++++++++++++++++++++++++++ drivers/usb/host/xhci-exynos5.c | 115 +++++++++++++++++- drivers/usb/host/xhci.c | 229 ++++++++++++++++++++++++++++------- drivers/usb/host/xhci.h | 24 ++++ include/configs/sandbox.h | 3 + include/configs/snow.h | 1 + include/dm/device.h | 10 ++ include/dm/uclass-id.h | 2 + include/usb.h | 76 +++++++++++- include/usb_defs.h | 14 ++- 26 files changed, 1294 insertions(+), 153 deletions(-) create mode 100644 arch/sandbox/include/asm/processor.h create mode 100644 drivers/usb/dev/Makefile create mode 100644 drivers/usb/dev/sandbox-flash.c create mode 100644 drivers/usb/dev/sandbox-hub.c create mode 100644 drivers/usb/dev/usb-emul-uclass.c create mode 100644 drivers/usb/host/usb-sandbox.c create mode 100644 drivers/usb/host/usb-uclass.c -- 2.2.0.rc0.207.ga3a616c