From 1d8937a469bfeb55ca1f6d89a4e7cd2dfee3cf17 Mon Sep 17 00:00:00 2001 From: Prafulla Wadaskar Date: Mon, 29 Jun 2009 20:56:43 +0530 Subject: [PATCH] usb: add Marvell Kirkwood ehci host controller driver This driver is tested on Sheevaplug platform Signed-off-by: Prafulla Wadaskar Signed-off-by: Remy Bohmer --- drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-kirkwood.c | 108 +++++++++++++++++++++++++++++++ 2 files changed, 109 insertions(+) create mode 100644 drivers/usb/host/ehci-kirkwood.c diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index ec1d689b35..940d4a8b91 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -37,6 +37,7 @@ COBJS-$(CONFIG_USB_SL811HS) += sl811-hcd.o COBJS-$(CONFIG_USB_EHCI) += ehci-hcd.o COBJS-$(CONFIG_USB_EHCI_FSL) += ehci-fsl.o COBJS-$(CONFIG_USB_EHCI_IXP4XX) += ehci-ixp.o +COBJS-$(CONFIG_USB_EHCI_KIRKWOOD) += ehci-kirkwood.o COBJS-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o COBJS-$(CONFIG_USB_EHCI_VCT) += ehci-vct.o diff --git a/drivers/usb/host/ehci-kirkwood.c b/drivers/usb/host/ehci-kirkwood.c new file mode 100644 index 0000000000..64997b85ce --- /dev/null +++ b/drivers/usb/host/ehci-kirkwood.c @@ -0,0 +1,108 @@ +/* + * (C) Copyright 2009 + * Marvell Semiconductor + * Written-by: Prafulla Wadaskar + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#include +#include +#include +#include "ehci.h" +#include "ehci-core.h" +#include + +#define rdl(off) readl(KW_USB20_BASE + (off)) +#define wrl(off, val) writel((val), KW_USB20_BASE + (off)) + +#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4)) +#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4)) +#define USB_TARGET_DRAM 0x0 + +/* + * USB 2.0 Bridge Address Decoding registers setup + */ +static void usb_brg_adrdec_setup(void) +{ + int i; + u32 size, attrib; + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + + /* Enable DRAM bank */ + switch (i) { + case 0: + attrib = KWCPU_ATTR_DRAM_CS0; + break; + case 1: + attrib = KWCPU_ATTR_DRAM_CS1; + break; + case 2: + attrib = KWCPU_ATTR_DRAM_CS2; + break; + case 3: + attrib = KWCPU_ATTR_DRAM_CS3; + break; + default: + /* invalide bank, disable access */ + attrib = 0; + break; + } + + size = kw_sdram_bs(i); + if ((size) && (attrib)) + wrl(USB_WINDOW_CTRL(i), + KWCPU_WIN_CTRL_DATA(size, USB_TARGET_DRAM, + attrib, KWCPU_WIN_ENABLE)); + else + wrl(USB_WINDOW_CTRL(i), KWCPU_WIN_DISABLE); + + wrl(USB_WINDOW_BASE(i), kw_sdram_bar(i)); + } +} + +/* + * Create the appropriate control structures to manage + * a new EHCI host controller. + */ +int ehci_hcd_init(void) +{ + usb_brg_adrdec_setup(); + + hccr = (struct ehci_hccr *)(KW_USB20_BASE + 0x100); + hcor = (struct ehci_hcor *)((uint32_t) hccr + + HC_LENGTH(ehci_readl(&hccr->cr_capbase))); + + debug("Kirkwood-ehci: init hccr %x and hcor %x hc_length %d\n", + (uint32_t)hccr, (uint32_t)hcor, + (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); + + return 0; +} + +/* + * Destroy the appropriate control structures corresponding + * the the EHCI host controller. + */ +int ehci_hcd_stop(void) +{ + return 0; +} + -- 2.25.1