203 lines
5.4 KiB
Diff
203 lines
5.4 KiB
Diff
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
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---
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drivers/usb/host/ohci-bcm63xx.c | 166 +++++++++++++++++++++++++++++++++++++++
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drivers/usb/host/ohci-hcd.c | 5 +
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drivers/usb/host/ohci.h | 2 +-
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3 files changed, 172 insertions(+), 1 deletions(-)
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create mode 100644 drivers/usb/host/ohci-bcm63xx.c
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--- /dev/null
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+++ b/drivers/usb/host/ohci-bcm63xx.c
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@@ -0,0 +1,166 @@
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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) 2010 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 __devinit ohci_bcm63xx_start(struct usb_hcd *hcd)
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+{
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+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
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+ int ret;
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+
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+ /*
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+ * port 2 can be shared with USB slave, but all boards seem to
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+ * have only one host port populated, so we can hardcode it
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+ */
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+ ohci->num_ports = 1;
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+
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+ ret = ohci_init(ohci);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = ohci_run(ohci);
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+ if (ret < 0) {
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+ err("can't start %s", hcd->self.bus_name);
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+ ohci_stop(hcd);
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+ return ret;
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+ }
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+ return 0;
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+}
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+
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+static const struct hc_driver ohci_bcm63xx_hc_driver = {
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+ .description = hcd_name,
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+ .product_desc = "BCM63XX integrated OHCI controller",
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+ .hcd_priv_size = sizeof(struct ohci_hcd),
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+
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+ .irq = ohci_irq,
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+ .flags = HCD_USB11 | HCD_MEMORY,
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+ .start = ohci_bcm63xx_start,
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+ .stop = ohci_stop,
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+ .shutdown = ohci_shutdown,
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+ .urb_enqueue = ohci_urb_enqueue,
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+ .urb_dequeue = ohci_urb_dequeue,
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+ .endpoint_disable = ohci_endpoint_disable,
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+ .get_frame_number = ohci_get_frame,
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+ .hub_status_data = ohci_hub_status_data,
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+ .hub_control = ohci_hub_control,
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+ .start_port_reset = ohci_start_port_reset,
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+};
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+
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+static int __devinit ohci_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 ohci_hcd *ohci;
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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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+ if (BCMCPU_IS_6348()) {
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+ struct clk *clk;
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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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+ bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
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+
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+ } else if (BCMCPU_IS_6358()) {
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+ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
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+ reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
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+ reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
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+ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG);
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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, USBH_PRIV_TEST_REG);
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+ } else
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+ return 0;
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+
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+ hcd = usb_create_hcd(&ohci_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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+ ohci = hcd_to_ohci(hcd);
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+ ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC |
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+ OHCI_QUIRK_FRAME_NO;
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+ ohci_hcd_init(ohci);
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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 ohci_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 ohci_hcd_bcm63xx_driver = {
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+ .probe = ohci_hcd_bcm63xx_drv_probe,
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+ .remove = __devexit_p(ohci_hcd_bcm63xx_drv_remove),
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+ .shutdown = usb_hcd_platform_shutdown,
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+ .driver = {
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+ .name = "bcm63xx_ohci",
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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_ohci");
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--- a/drivers/usb/host/ohci-hcd.c
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+++ b/drivers/usb/host/ohci-hcd.c
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@@ -1061,6 +1061,11 @@ MODULE_LICENSE ("GPL");
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#define PLATFORM_DRIVER ohci_hcd_da8xx_driver
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#endif
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+#ifdef CONFIG_BCM63XX
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+#include "ohci-bcm63xx.c"
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+#define PLATFORM_DRIVER ohci_hcd_bcm63xx_driver
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+#endif
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+
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#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
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defined(CONFIG_CPU_SUBTYPE_SH7721) || \
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defined(CONFIG_CPU_SUBTYPE_SH7763) || \
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--- a/drivers/usb/host/ohci.h
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+++ b/drivers/usb/host/ohci.h
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@@ -655,7 +655,7 @@ static inline u32 hc32_to_cpup (const st
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* some big-endian SOC implementations. Same thing happens with PSW access.
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*/
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-#ifdef CONFIG_PPC_MPC52xx
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+#if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_BCM63XX)
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#define big_endian_frame_no_quirk(ohci) (ohci->flags & OHCI_QUIRK_FRAME_NO)
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#else
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#define big_endian_frame_no_quirk(ohci) 0
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