From 2940d1996c86c4c4dd7a82214f846d0c0b707165 Mon Sep 17 00:00:00 2001 From: Maxime Bizon Date: Mon, 21 Jul 2008 18:24:42 +0200 Subject: [PATCH] [MIPS] BCM63XX: Add USB EHCI support. Signed-off-by: Maxime Bizon --- arch/mips/bcm63xx/Kconfig | 2 + arch/mips/bcm63xx/Makefile | 1 + arch/mips/bcm63xx/dev-usb-ehci.c | 50 +++++++ drivers/usb/host/ehci-bcm63xx.c | 152 ++++++++++++++++++++ drivers/usb/host/ehci-hcd.c | 5 + drivers/usb/host/ehci.h | 5 + .../asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ehci.h | 6 + 7 files changed, 221 insertions(+), 0 deletions(-) create mode 100644 arch/mips/bcm63xx/dev-usb-ehci.c create mode 100644 drivers/usb/host/ehci-bcm63xx.c create mode 100644 include/asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ehci.h --- a/arch/mips/bcm63xx/Kconfig +++ b/arch/mips/bcm63xx/Kconfig @@ -14,4 +14,6 @@ config BCM63XX_CPU_6358 select USB_ARCH_HAS_OHCI select USB_OHCI_BIG_ENDIAN_DESC select USB_OHCI_BIG_ENDIAN_MMIO + select USB_ARCH_HAS_EHCI + select USB_EHCI_BIG_ENDIAN_MMIO endmenu --- a/arch/mips/bcm63xx/Makefile +++ b/arch/mips/bcm63xx/Makefile @@ -2,4 +2,5 @@ obj-y += clk.o cpu.o cs.o gpio.o irq.o obj-y += dev-uart.o obj-y += dev-pcmcia.o obj-y += dev-usb-ohci.o +obj-y += dev-usb-ehci.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o --- /dev/null +++ b/arch/mips/bcm63xx/dev-usb-ehci.c @@ -0,0 +1,50 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon + */ + +#include +#include +#include +#include +#include + +static struct resource ehci_resources[] = { + { + .start = -1, /* filled at runtime */ + .end = -1, /* filled at runtime */ + .flags = IORESOURCE_MEM, + }, + { + .start = -1, /* filled at runtime */ + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 ehci_dmamask = ~(u32)0; + +static struct platform_device bcm63xx_ehci_device = { + .name = "bcm63xx_ehci", + .id = 0, + .num_resources = ARRAY_SIZE(ehci_resources), + .resource = ehci_resources, + .dev = { + .dma_mask = &ehci_dmamask, + .coherent_dma_mask = 0xffffffff, + }, +}; + +int __init bcm63xx_ehci_register(void) +{ + if (!BCMCPU_IS_6358()) + return 0; + + ehci_resources[0].start = bcm63xx_regset_address(RSET_EHCI0); + ehci_resources[0].end = ehci_resources[0].start; + ehci_resources[0].end += RSET_EHCI_SIZE - 1; + ehci_resources[1].start = bcm63xx_get_irq_number(IRQ_EHCI0); + return platform_device_register(&bcm63xx_ehci_device); +} --- /dev/null +++ b/drivers/usb/host/ehci-bcm63xx.c @@ -0,0 +1,152 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon + */ + +#include +#include +#include +#include +#include + +static int ehci_bcm63xx_setup(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int retval; + + retval = ehci_halt(ehci); + if (retval) + return retval; + + retval = ehci_init(hcd); + if (retval) + return retval; + + hcd->has_tt = 1; + ehci_reset(ehci); + ehci_port_power(ehci, 0); + + return retval; +} + + +static const struct hc_driver ehci_bcm63xx_hc_driver = { + .description = hcd_name, + .product_desc = "BCM63XX integrated EHCI controller", + .hcd_priv_size = sizeof(struct ehci_hcd), + + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + .reset = ehci_bcm63xx_setup, + .start = ehci_run, + .stop = ehci_stop, + .shutdown = ehci_shutdown, + + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + + .get_frame_number = ehci_get_frame, + + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, +}; + +static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev) +{ + struct resource *res_mem, *res_irq; + struct usb_hcd *hcd; + struct ehci_hcd *ehci; + u32 reg; + int ret; + + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res_mem || !res_irq) + return -ENODEV; + + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG); + reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK; + reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK; + bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG); + + /* don't ask... */ + bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG); + + hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx"); + if (!hcd) + return -ENOMEM; + hcd->rsrc_start = res_mem->start; + hcd->rsrc_len = res_mem->end - res_mem->start + 1; + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + pr_debug("request_mem_region failed\n"); + ret = -EBUSY; + goto out; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + pr_debug("ioremap failed\n"); + ret = -EIO; + goto out1; + } + + ehci = hcd_to_ehci(hcd); + ehci->big_endian_mmio = 1; + ehci->big_endian_desc = 0; + ehci->caps = hcd->regs; + ehci->regs = hcd->regs + + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + ehci->sbrn = 0x20; + + ret = usb_add_hcd(hcd, res_irq->start, IRQF_DISABLED); + if (ret) + goto out2; + + platform_set_drvdata(pdev, hcd); + return 0; + +out2: + iounmap(hcd->regs); +out1: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +out: + usb_put_hcd(hcd); + return ret; +} + +static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev) +{ + struct usb_hcd *hcd; + + hcd = platform_get_drvdata(pdev); + usb_remove_hcd(hcd); + iounmap(hcd->regs); + usb_put_hcd(hcd); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + platform_set_drvdata(pdev, NULL); + return 0; +} + +static struct platform_driver ehci_hcd_bcm63xx_driver = { + .probe = ehci_hcd_bcm63xx_drv_probe, + .remove = __devexit_p(ehci_hcd_bcm63xx_drv_remove), + .shutdown = usb_hcd_platform_shutdown, + .driver = { + .name = "bcm63xx_ehci", + .owner = THIS_MODULE, + .bus = &platform_bus_type + }, +}; + +MODULE_ALIAS("platform:bcm63xx_ehci"); --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1040,6 +1040,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ixp4xx_ehci_driver #endif +#ifdef CONFIG_BCM63XX +#include "ehci-bcm63xx.c" +#define PLATFORM_DRIVER ehci_hcd_bcm63xx_driver +#endif + #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) #error "missing bus glue for ehci-hcd" --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -755,6 +755,11 @@ ehci_port_speed(struct ehci_hcd *ehci, u #define writel_be(val, addr) __raw_writel(val, (__force unsigned *)addr) #endif +#if defined(CONFIG_MIPS) && defined(CONFIG_BCM63XX) +#define readl_be(addr) __raw_readl((__force unsigned *)addr) +#define writel_be(val, addr) __raw_writel(val, (__force unsigned *)addr) +#endif + static inline unsigned int ehci_readl(const struct ehci_hcd *ehci, __u32 __iomem * regs) { --- /dev/null +++ b/include/asm-mips/mach-bcm63xx/bcm63xx_dev_usb_ehci.h @@ -0,0 +1,6 @@ +#ifndef BCM63XX_DEV_USB_EHCI_H_ +#define BCM63XX_DEV_USB_EHCI_H_ + +int bcm63xx_ehci_register(void); + +#endif /* BCM63XX_DEV_USB_EHCI_H_ */