From 81c1f6f0c3b05ae07c521c2dce579f0cb0816926 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 14 Jul 2016 11:39:20 +0200 Subject: [PATCH] usb: xhci: Add Marvell MVEBU xHCI support This patch adds DM based support for the xHCI USB 3.0 controller integrated in the Armada 3700 SoC. It may be extended to be used by other MVEBU SoCs as well. Signed-off-by: Stefan Roese Cc: Nadav Haklai Cc: Kostya Porotchkin Cc: Wilson Ding Cc: Victor Gu Cc: Hua Jing Cc: Terry Zhou Cc: Hanna Hawa Cc: Haim Boot Acked-by: Marek Vasut --- drivers/usb/host/Kconfig | 9 ++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/xhci-mvebu.c | 96 +++++++++++++++++++++++++++++++++++ 3 files changed, 106 insertions(+) create mode 100644 drivers/usb/host/xhci-mvebu.c diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 61e13d76e6..b9c5fbe381 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -21,6 +21,15 @@ config USB_XHCI_DWC3 Say Y or if your system has a Dual Role SuperSpeed USB controller based on the DesignWare USB3 IP Core. +config USB_XHCI_MVEBU + bool "MVEBU USB 3.0 support" + default y + depends on ARCH_MVEBU + help + Choose this option to add support for USB 3.0 driver on mvebu + SoCs, which includes Armada8K, Armada3700 and other Armada + family SoCs. + config USB_XHCI_ROCKCHIP bool "Support for Rockchip on-chip xHCI USB controller" depends on ARCH_ROCKCHIP diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index de253284fb..58c0cf54c2 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_USB_XHCI_ZYNQMP) += xhci-zynqmp.o obj-$(CONFIG_USB_XHCI_KEYSTONE) += xhci-keystone.o obj-$(CONFIG_USB_XHCI_EXYNOS) += xhci-exynos5.o obj-$(CONFIG_USB_XHCI_FSL) += xhci-fsl.o +obj-$(CONFIG_USB_XHCI_MVEBU) += xhci-mvebu.o obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o diff --git a/drivers/usb/host/xhci-mvebu.c b/drivers/usb/host/xhci-mvebu.c new file mode 100644 index 0000000000..e09e87ac91 --- /dev/null +++ b/drivers/usb/host/xhci-mvebu.c @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2015 Marvell International Ltd. + * + * MVEBU USB HOST xHCI Controller + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +#include "xhci.h" + +DECLARE_GLOBAL_DATA_PTR; + +struct mvebu_xhci_platdata { + fdt_addr_t hcd_base; +}; + +/** + * Contains pointers to register base addresses + * for the usb controller. + */ +struct mvebu_xhci { + struct xhci_ctrl ctrl; /* Needs to come first in this struct! */ + struct usb_platdata usb_plat; + struct xhci_hccr *hcd; +}; + +/* + * Dummy implementation that can be overwritten by a board + * specific function + */ +__weak int board_xhci_enable(void) +{ + return 0; +} + +static int xhci_usb_probe(struct udevice *dev) +{ + struct mvebu_xhci_platdata *plat = dev_get_platdata(dev); + struct mvebu_xhci *ctx = dev_get_priv(dev); + struct xhci_hcor *hcor; + int len; + + ctx->hcd = (struct xhci_hccr *)plat->hcd_base; + len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase)); + hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len); + + /* Enable USB xHCI (VBUS, reset etc) in board specific code */ + board_xhci_enable(); + + return xhci_register(dev, ctx->hcd, hcor); +} + +static int xhci_usb_remove(struct udevice *dev) +{ + return xhci_deregister(dev); +} + +static int xhci_usb_ofdata_to_platdata(struct udevice *dev) +{ + struct mvebu_xhci_platdata *plat = dev_get_platdata(dev); + + /* + * Get the base address for XHCI controller from the device node + */ + plat->hcd_base = dev_get_addr(dev); + if (plat->hcd_base == FDT_ADDR_T_NONE) { + debug("Can't get the XHCI register base address\n"); + return -ENXIO; + } + + return 0; +} + +static const struct udevice_id xhci_usb_ids[] = { + { .compatible = "marvell,armada3700-xhci" }, + { } +}; + +U_BOOT_DRIVER(usb_xhci) = { + .name = "xhci_mvebu", + .id = UCLASS_USB, + .of_match = xhci_usb_ids, + .ofdata_to_platdata = xhci_usb_ofdata_to_platdata, + .probe = xhci_usb_probe, + .remove = xhci_usb_remove, + .ops = &xhci_usb_ops, + .platdata_auto_alloc_size = sizeof(struct mvebu_xhci_platdata), + .priv_auto_alloc_size = sizeof(struct mvebu_xhci), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; -- 2.39.5