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240 lines
6.5 KiB
240 lines
6.5 KiB
From db58271d5152aa1d3894fdef13ca04379139d5d9 Mon Sep 17 00:00:00 2001
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From: Maxime Bizon <mbizon@freebox.fr>
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Date: Fri, 10 Jun 2011 19:15:47 +0200
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Subject: [PATCH 25/63] ehci: add driver for bcm63xx integrated controller.
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---
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drivers/usb/host/Kconfig | 10 ++-
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drivers/usb/host/ehci-bcm63xx.c | 185 +++++++++++++++++++++++++++++++++++++++
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drivers/usb/host/ehci-hcd.c | 5 +
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3 files changed, 199 insertions(+), 1 deletions(-)
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create mode 100644 drivers/usb/host/ehci-bcm63xx.c
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--- a/drivers/usb/host/Kconfig
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+++ b/drivers/usb/host/Kconfig
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@@ -106,7 +106,7 @@ config USB_EHCI_BIG_ENDIAN_MMIO
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depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || \
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ARCH_IXP4XX || XPS_USB_HCD_XILINX || \
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PPC_MPC512x || CPU_CAVIUM_OCTEON || \
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- PMC_MSP || SPARC_LEON)
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+ PMC_MSP || SPARC_LEON || BCM63XX)
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default y
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config USB_EHCI_BIG_ENDIAN_DESC
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@@ -129,6 +129,14 @@ config XPS_USB_HCD_XILINX
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config USB_FSL_MPH_DR_OF
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tristate
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+config USB_EHCI_BCM63XX
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+ bool "Support for Broadcom 63xx on-chip EHCI USB controller"
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+ depends on USB_EHCI_HCD && BCM63XX
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+ select USB_EHCI_BIG_ENDIAN_MMIO
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+ ---help---
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+ Enables support for the on-chip EHCI controller on
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+ BCM6358 and later chips.
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+
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config USB_EHCI_FSL
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bool "Support for Freescale PPC on-chip EHCI USB controller"
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depends on USB_EHCI_HCD && FSL_SOC
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--- /dev/null
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+++ b/drivers/usb/host/ehci-bcm63xx.c
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@@ -0,0 +1,185 @@
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+/*
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+ * This file is subject to the terms and conditions of the GNU General Public
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+ * License. See the file "COPYING" in the main directory of this archive
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+ * for more details.
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+ *
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+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
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+ */
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+
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+#include <linux/init.h>
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+#include <linux/clk.h>
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+#include <linux/platform_device.h>
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+#include <bcm63xx_cpu.h>
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+#include <bcm63xx_regs.h>
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+#include <bcm63xx_io.h>
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+
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+static struct clk *usb_host_clock;
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+
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+static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
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+{
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+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
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+ int retval;
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+
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+ retval = ehci_halt(ehci);
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+ if (retval)
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+ return retval;
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+
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+ retval = ehci_init(hcd);
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+ if (retval)
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+ return retval;
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+
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+ ehci_reset(ehci);
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+ ehci_port_power(ehci, 0);
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+
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+ return retval;
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+}
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+
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+
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+static const struct hc_driver ehci_bcm63xx_hc_driver = {
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+ .description = hcd_name,
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+ .product_desc = "BCM63XX integrated EHCI controller",
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+ .hcd_priv_size = sizeof(struct ehci_hcd),
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+
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+ .irq = ehci_irq,
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+ .flags = HCD_MEMORY | HCD_USB2,
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+
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+ .reset = ehci_bcm63xx_setup,
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+ .start = ehci_run,
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+ .stop = ehci_stop,
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+ .shutdown = ehci_shutdown,
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+
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+ .urb_enqueue = ehci_urb_enqueue,
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+ .urb_dequeue = ehci_urb_dequeue,
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+ .endpoint_disable = ehci_endpoint_disable,
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+
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+ .get_frame_number = ehci_get_frame,
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+
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+ .hub_status_data = ehci_hub_status_data,
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+ .hub_control = ehci_hub_control,
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+ .bus_suspend = ehci_bus_suspend,
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+ .bus_resume = ehci_bus_resume,
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+ .relinquish_port = ehci_relinquish_port,
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+ .port_handed_over = ehci_port_handed_over,
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+};
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+
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+static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
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+{
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+ struct resource *res_mem;
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+ struct usb_hcd *hcd;
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+ struct ehci_hcd *ehci;
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+ struct clk *clk;
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+ u32 reg;
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+ int ret, irq;
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+
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+ res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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+ irq = platform_get_irq(pdev, 0);;
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+ if (!res_mem || irq < 0)
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+ return -ENODEV;
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+
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+ /* enable USB host clock */
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+ clk = clk_get(&pdev->dev, "usbh");
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+ if (IS_ERR(clk))
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+ return -ENODEV;
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+
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+ clk_enable(clk);
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+ usb_host_clock = clk;
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+ msleep(100);
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+
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+ if (BCMCPU_IS_6358()) {
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+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
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+ reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
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+ reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
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+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
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+
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+ /*
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+ * The magic value comes for the original vendor BSP
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+ * and is needed for USB to work. Datasheet does not
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+ * help, so the magic value is used as-is.
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+ */
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+ bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
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+ USBH_PRIV_TEST_6358_REG);
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+
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+ } else if (BCMCPU_IS_6368()) {
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+
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+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
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+ reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
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+ reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
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+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
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+
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+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
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+ reg |= USBH_PRIV_SETUP_IOC_MASK;
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+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
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+ }
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+
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+ hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
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+ if (!hcd)
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+ return -ENOMEM;
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+ hcd->rsrc_start = res_mem->start;
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+ hcd->rsrc_len = res_mem->end - res_mem->start + 1;
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+
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+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
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+ pr_debug("request_mem_region failed\n");
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+ ret = -EBUSY;
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+ goto out;
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+ }
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+
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+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
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+ if (!hcd->regs) {
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+ pr_debug("ioremap failed\n");
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+ ret = -EIO;
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+ goto out1;
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+ }
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+
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+ ehci = hcd_to_ehci(hcd);
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+ ehci->big_endian_mmio = 1;
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+ ehci->big_endian_desc = 0;
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+ ehci->caps = hcd->regs;
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+ ehci->regs = hcd->regs +
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+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
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+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
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+ ehci->sbrn = 0x20;
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+
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+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
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+ if (ret)
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+ goto out2;
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+
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+ platform_set_drvdata(pdev, hcd);
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+ return 0;
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+
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+out2:
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+ iounmap(hcd->regs);
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+out1:
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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+out:
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+ usb_put_hcd(hcd);
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+ return ret;
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+}
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+
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+static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
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+{
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+ struct usb_hcd *hcd;
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+
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+ hcd = platform_get_drvdata(pdev);
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+ usb_remove_hcd(hcd);
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+ iounmap(hcd->regs);
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+ usb_put_hcd(hcd);
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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+ if (usb_host_clock) {
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+ clk_disable(usb_host_clock);
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+ clk_put(usb_host_clock);
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+ }
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+ platform_set_drvdata(pdev, NULL);
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+ return 0;
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+}
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+
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+static struct platform_driver ehci_hcd_bcm63xx_driver = {
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+ .probe = ehci_hcd_bcm63xx_drv_probe,
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+ .remove = __devexit_p(ehci_hcd_bcm63xx_drv_remove),
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+ .shutdown = usb_hcd_platform_shutdown,
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+ .driver = {
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+ .name = "bcm63xx_ehci",
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+ .owner = THIS_MODULE,
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+ },
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+};
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+
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+MODULE_ALIAS("platform:bcm63xx_ehci");
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--- a/drivers/usb/host/ehci-hcd.c
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+++ b/drivers/usb/host/ehci-hcd.c
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@@ -1381,6 +1381,11 @@ MODULE_LICENSE ("GPL");
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#define PLATFORM_DRIVER ehci_mv_driver
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#endif
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+#ifdef CONFIG_USB_EHCI_BCM63XX
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+#include "ehci-bcm63xx.c"
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+#define PLATFORM_DRIVER ehci_hcd_bcm63xx_driver
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+#endif
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+
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#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
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!defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
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!defined(XILINX_OF_PLATFORM_DRIVER)
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