From db58271d5152aa1d3894fdef13ca04379139d5d9 Mon Sep 17 00:00:00 2001 From: Maxime Bizon <mbizon@freebox.fr> Date: Fri, 10 Jun 2011 19:15:47 +0200 Subject: [PATCH 25/63] ehci: add driver for bcm63xx integrated controller. --- drivers/usb/host/Kconfig | 10 ++- drivers/usb/host/ehci-bcm63xx.c | 186 +++++++++++++++++++++++++++++++++++++++ drivers/usb/host/ehci-hcd.c | 5 + 3 files changed, 199 insertions(+), 1 deletions(-) create mode 100644 drivers/usb/host/ehci-bcm63xx.c --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -106,7 +106,7 @@ config USB_EHCI_BIG_ENDIAN_MMIO depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || \ ARCH_IXP4XX || XPS_USB_HCD_XILINX || \ PPC_MPC512x || CPU_CAVIUM_OCTEON || \ - PMC_MSP || SPARC_LEON) + PMC_MSP || SPARC_LEON || BCM63XX) default y config USB_EHCI_BIG_ENDIAN_DESC @@ -129,6 +129,14 @@ config XPS_USB_HCD_XILINX config USB_FSL_MPH_DR_OF tristate +config USB_EHCI_BCM63XX + bool "Support for Broadcom 63xx on-chip EHCI USB controller" + depends on USB_EHCI_HCD && BCM63XX + select USB_EHCI_BIG_ENDIAN_MMIO + ---help--- + Enables support for the on-chip EHCI controller on + BCM6358 and later chips. + config USB_EHCI_FSL bool "Support for Freescale PPC on-chip EHCI USB controller" depends on USB_EHCI_HCD && FSL_SOC --- /dev/null +++ b/drivers/usb/host/ehci-bcm63xx.c @@ -0,0 +1,186 @@ +/* + * 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 <mbizon@freebox.fr> + */ + +#include <linux/init.h> +#include <linux/clk.h> +#include <linux/platform_device.h> +#include <bcm63xx_cpu.h> +#include <bcm63xx_regs.h> +#include <bcm63xx_io.h> + +static struct clk *usb_host_clock; + +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; + + 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; + struct usb_hcd *hcd; + struct ehci_hcd *ehci; + 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_6358()) { + reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_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_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_EHCI_DATA_MASK; + reg |= USBH_PRIV_SWAP_EHCI_ENDN_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(&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, ehci_readl(ehci, &ehci->caps->hc_capbase)); + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + ehci->sbrn = 0x20; + ehci->ignore_oc = 1; + + 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 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); + 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 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, + }, +}; + +MODULE_ALIAS("platform:bcm63xx_ehci"); --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1381,6 +1381,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_mv_driver #endif +#ifdef CONFIG_USB_EHCI_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) && \ !defined(XILINX_OF_PLATFORM_DRIVER)