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From 7b510c5754d3c46e1287803f51e8ecb177414438 Mon Sep 17 00:00:00 2001
From: Maxime Bizon <mbizon@freebox.fr>
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
@@ -306,6 +306,15 @@ 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
--- /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 <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 __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
@@ -1120,6 +1120,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_platform_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
@@ -647,7 +647,7 @@ 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
|
