From 7b510c5754d3c46e1287803f51e8ecb177414438 Mon Sep 17 00:00:00 2001 From: Maxime Bizon Date: Fri, 10 Jun 2011 19:14:30 +0200 Subject: [PATCH 23/63] ohci: add driver for bcm63xx integrated controller. --- drivers/usb/host/Kconfig | 9 ++ drivers/usb/host/ohci-bcm63xx.c | 175 +++++++++++++++++++++++++++++++++++++++ drivers/usb/host/ohci-hcd.c | 5 + drivers/usb/host/ohci.h | 2 +- 4 files changed, 190 insertions(+), 1 deletions(-) create mode 100644 drivers/usb/host/ohci-bcm63xx.c --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -296,6 +296,15 @@ config USB_OHCI_HCD To compile this driver as a module, choose M here: the module will be called ohci-hcd. +config USB_OHCI_BCM63XX + bool "Support for Broadcom 63xx on-chip OHCI USB controller" + depends on USB_OHCI_HCD && BCM63XX + select USB_OHCI_BIG_ENDIAN_DESC + select USB_OHCI_BIG_ENDIAN_MMIO + ---help--- + Enables support for the on-chip OHCI controller on + BCM63XX chips. + config USB_OHCI_HCD_OMAP1 bool "OHCI support for OMAP1/2 chips" depends on USB_OHCI_HCD && (ARCH_OMAP1 || ARCH_OMAP2) --- /dev/null +++ b/drivers/usb/host/ohci-bcm63xx.c @@ -0,0 +1,175 @@ +/* + * 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 +#include + +static struct clk *usb_host_clock; + +static int __devinit ohci_bcm63xx_start(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int ret; + + ohci->num_ports = 1; + + ret = ohci_init(ohci); + if (ret < 0) + return ret; + + /* FIXME: autodetected port 2 is shared with USB slave */ + + ret = ohci_run(ohci); + if (ret < 0) { + err("can't start %s", hcd->self.bus_name); + ohci_stop(hcd); + return ret; + } + return 0; +} + +static const struct hc_driver ohci_bcm63xx_hc_driver = { + .description = hcd_name, + .product_desc = "BCM63XX integrated OHCI controller", + .hcd_priv_size = sizeof(struct ohci_hcd), + + .irq = ohci_irq, + .flags = HCD_USB11 | HCD_MEMORY, + .start = ohci_bcm63xx_start, + .stop = ohci_stop, + .shutdown = ohci_shutdown, + .urb_enqueue = ohci_urb_enqueue, + .urb_dequeue = ohci_urb_dequeue, + .endpoint_disable = ohci_endpoint_disable, + .get_frame_number = ohci_get_frame, + .hub_status_data = ohci_hub_status_data, + .hub_control = ohci_hub_control, + .start_port_reset = ohci_start_port_reset, +}; + +static int __devinit ohci_hcd_bcm63xx_drv_probe(struct platform_device *pdev) +{ + struct resource *res_mem; + struct usb_hcd *hcd; + struct ohci_hcd *ohci; + struct clk *clk; + u32 reg; + int ret, irq; + + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + irq = platform_get_irq(pdev, 0); + if (!res_mem || irq < 0) + return -ENODEV; + + /* enable USB host clock */ + clk = clk_get(&pdev->dev, "usbh"); + if (IS_ERR(clk)) + return -ENODEV; + + clk_enable(clk); + usb_host_clock = clk; + msleep(100); + + if (BCMCPU_IS_6348()) + bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG); + else if (BCMCPU_IS_6358()) { + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG); + reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK; + reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK; + bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG); + /* + * The magic value comes for the original vendor BSP + * and is needed for USB to work. Datasheet does not + * help, so the magic value is used as-is. + */ + bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, + USBH_PRIV_TEST_6358_REG); + + } else if (BCMCPU_IS_6368()) { + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG); + reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK; + reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK; + bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG); + + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG); + reg |= USBH_PRIV_SETUP_IOC_MASK; + bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG); + } + + hcd = usb_create_hcd(&ohci_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; + } + + ohci = hcd_to_ohci(hcd); + ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC | + OHCI_QUIRK_FRAME_NO; + ohci_hcd_init(ohci); + + ret = usb_add_hcd(hcd, irq, 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 ohci_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); + if (usb_host_clock) { + clk_disable(usb_host_clock); + clk_put(usb_host_clock); + } + platform_set_drvdata(pdev, NULL); + return 0; +} + +static struct platform_driver ohci_hcd_bcm63xx_driver = { + .probe = ohci_hcd_bcm63xx_drv_probe, + .remove = __devexit_p(ohci_hcd_bcm63xx_drv_remove), + .shutdown = usb_hcd_platform_shutdown, + .driver = { + .name = "bcm63xx_ohci", + .owner = THIS_MODULE, + }, +}; + +MODULE_ALIAS("platform:bcm63xx_ohci"); --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1121,6 +1121,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ohci_xls_driver #endif +#ifdef CONFIG_USB_OHCI_BCM63XX +#include "ohci-bcm63xx.c" +#define PLATFORM_DRIVER ohci_hcd_bcm63xx_driver +#endif + #if !defined(PCI_DRIVER) && \ !defined(PLATFORM_DRIVER) && \ !defined(OMAP1_PLATFORM_DRIVER) && \ --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -652,7 +652,7 @@ static inline u32 hc32_to_cpup (const st * some big-endian SOC implementations. Same thing happens with PSW access. */ -#ifdef CONFIG_PPC_MPC52xx +#if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_BCM63XX) #define big_endian_frame_no_quirk(ohci) (ohci->flags & OHCI_QUIRK_FRAME_NO) #else #define big_endian_frame_no_quirk(ohci) 0