Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 560 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
new file mode 100644
index 000000000000..90285f180f87
--- /dev/null
+++ b/drivers/usb/host/ohci-omap.c
@@ -0,0 +1,560 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2005 David Brownell
+ * (C) Copyright 2002 Hewlett-Packard Company
+ * 
+ * OMAP Bus Glue
+ *
+ * Modified for OMAP by Tony Lindgren <tony@atomide.com>
+ * Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc.
+ * and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/irqs.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/fpga.h>
+#include <asm/arch/usb.h>
+#include <asm/hardware/clock.h>
+
+
+/* OMAP-1510 OHCI has its own MMU for DMA */
+#define OMAP1510_LB_MEMSIZE     32      /* Should be same as SDRAM size */
+#define OMAP1510_LB_CLOCK_DIV   0xfffec10c
+#define OMAP1510_LB_MMU_CTL     0xfffec208
+#define OMAP1510_LB_MMU_LCK     0xfffec224
+#define OMAP1510_LB_MMU_LD_TLB  0xfffec228
+#define OMAP1510_LB_MMU_CAM_H   0xfffec22c
+#define OMAP1510_LB_MMU_CAM_L   0xfffec230
+#define OMAP1510_LB_MMU_RAM_H   0xfffec234
+#define OMAP1510_LB_MMU_RAM_L   0xfffec238
+
+
+#ifndef CONFIG_ARCH_OMAP
+#error "This file is OMAP bus glue.  CONFIG_OMAP must be defined."
+#endif
+
+#ifdef CONFIG_TPS65010
+#include <asm/arch/tps65010.h>
+#else
+
+#define LOW     0
+#define HIGH    1
+
+#define GPIO1   1
+
+static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
+{
+        return 0;
+}
+
+#endif
+
+extern int usb_disabled(void);
+extern int ocpi_enable(void);
+
+static struct clk *usb_host_ck;
+
+static void omap_ohci_clock_power(int on)
+{
+        if (on) {
+                clk_enable(usb_host_ck);
+                /* guesstimate for T5 == 1x 32K clock + APLL lock time */
+                udelay(100);
+        } else {
+                clk_disable(usb_host_ck);
+        }
+}
+
+/*
+ * Board specific gang-switched transceiver power on/off.
+ * NOTE:  OSK supplies power from DC, not battery.
+ */
+static int omap_ohci_transceiver_power(int on)
+{
+        if (on) {
+                if (machine_is_omap_innovator() && cpu_is_omap1510())
+                        fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
+                                | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), 
+                               INNOVATOR_FPGA_CAM_USB_CONTROL);
+                else if (machine_is_omap_osk())
+                        tps65010_set_gpio_out_value(GPIO1, LOW);
+        } else {
+                if (machine_is_omap_innovator() && cpu_is_omap1510())
+                        fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
+                                & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), 
+                               INNOVATOR_FPGA_CAM_USB_CONTROL);
+                else if (machine_is_omap_osk())
+                        tps65010_set_gpio_out_value(GPIO1, HIGH);
+        }
+
+        return 0;
+}
+
+/*
+ * OMAP-1510 specific Local Bus clock on/off
+ */
+static int omap_1510_local_bus_power(int on)
+{
+        if (on) {
+                omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
+                udelay(200);
+        } else {
+                omap_writel(0, OMAP1510_LB_MMU_CTL);
+        }
+
+        return 0;
+}
+
+/*
+ * OMAP-1510 specific Local Bus initialization
+ * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
+ *       See also arch/mach-omap/memory.h for __virt_to_dma() and 
+ *       __dma_to_virt() which need to match with the physical 
+ *       Local Bus address below.
+ */
+static int omap_1510_local_bus_init(void)
+{
+        unsigned int tlb;
+        unsigned long lbaddr, physaddr;
+
+        omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4, 
+               OMAP1510_LB_CLOCK_DIV);
+
+        /* Configure the Local Bus MMU table */
+        for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
+                lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
+                physaddr = tlb * 0x00100000 + PHYS_OFFSET;
+                omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
+                omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc, 
+                       OMAP1510_LB_MMU_CAM_L);
+                omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
+                omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
+                omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
+                omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
+        }
+
+        /* Enable the walking table */
+        omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
+        udelay(200);
+
+        return 0;
+}
+
+#ifdef  CONFIG_USB_OTG
+
+static void start_hnp(struct ohci_hcd *ohci)
+{
+        const unsigned  port = ohci_to_hcd(ohci)->self.otg_port - 1;
+        unsigned long   flags;
+
+        otg_start_hnp(ohci->transceiver);
+
+        local_irq_save(flags);
+        ohci->transceiver->state = OTG_STATE_A_SUSPEND;
+        writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
+        OTG_CTRL_REG &= ~OTG_A_BUSREQ;
+        local_irq_restore(flags);
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static int omap_start_hc(struct ohci_hcd *ohci, struct platform_device *pdev)
+{
+        struct omap_usb_config  *config = pdev->dev.platform_data;
+        int                     need_transceiver = (config->otg != 0);
+        int                     ret;
+
+        dev_dbg(&pdev->dev, "starting USB Controller\n");
+
+        if (config->otg) {
+                ohci_to_hcd(ohci)->self.otg_port = config->otg;
+                /* default/minimum OTG power budget:  8 mA */
+                ohci->power_budget = 8;
+        }
+
+        /* boards can use OTG transceivers in non-OTG modes */
+        need_transceiver = need_transceiver
+                        || machine_is_omap_h2() || machine_is_omap_h3();
+
+        if (cpu_is_omap16xx())
+                ocpi_enable();
+
+#ifdef  CONFIG_ARCH_OMAP_OTG
+        if (need_transceiver) {
+                ohci->transceiver = otg_get_transceiver();
+                if (ohci->transceiver) {
+                        int     status = otg_set_host(ohci->transceiver,
+                                                &ohci_to_hcd(ohci)->self);
+                        dev_dbg(&pdev->dev, "init %s transceiver, status %d\n",
+                                        ohci->transceiver->label, status);
+                        if (status) {
+                                if (ohci->transceiver)
+                                        put_device(ohci->transceiver->dev);
+                                return status;
+                        }
+                } else {
+                        dev_err(&pdev->dev, "can't find transceiver\n");
+                        return -ENODEV;
+                }
+        }
+#endif
+
+        omap_ohci_clock_power(1);
+
+        if (cpu_is_omap1510()) {
+                omap_1510_local_bus_power(1);
+                omap_1510_local_bus_init();
+        }
+
+        if ((ret = ohci_init(ohci)) < 0)
+                return ret;
+
+        /* board-specific power switching and overcurrent support */
+        if (machine_is_omap_osk() || machine_is_omap_innovator()) {
+                u32     rh = roothub_a (ohci);
+
+                /* power switching (ganged by default) */
+                rh &= ~RH_A_NPS;
+
+                /* TPS2045 switch for internal transceiver (port 1) */
+                if (machine_is_omap_osk()) {
+                        ohci->power_budget = 250;
+
+                        rh &= ~RH_A_NOCP;
+
+                        /* gpio9 for overcurrent detction */
+                        omap_cfg_reg(W8_1610_GPIO9);
+                        omap_request_gpio(9);
+                        omap_set_gpio_direction(9, 1 /* IN */);
+
+                        /* for paranoia's sake:  disable USB.PUEN */
+                        omap_cfg_reg(W4_USB_HIGHZ);
+                }
+                ohci_writel(ohci, rh, &ohci->regs->roothub.a);
+                distrust_firmware = 0;
+        }
+
+        /* FIXME khubd hub requests should manage power switching */
+        omap_ohci_transceiver_power(1);
+
+        /* board init will have already handled HMC and mux setup.
+         * any external transceiver should already be initialized
+         * too, so all configured ports use the right signaling now.
+         */
+
+        return 0;
+}
+
+static void omap_stop_hc(struct platform_device *pdev)
+{
+        dev_dbg(&pdev->dev, "stopping USB Controller\n");
+        omap_ohci_clock_power(0);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+void usb_hcd_omap_remove (struct usb_hcd *, struct platform_device *);
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_omap_probe - initialize OMAP-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ */
+int usb_hcd_omap_probe (const struct hc_driver *driver,
+                          struct platform_device *pdev)
+{
+        int retval;
+        struct usb_hcd *hcd = 0;
+        struct ohci_hcd *ohci;
+
+        if (pdev->num_resources != 2) {
+                printk(KERN_ERR "hcd probe: invalid num_resources: %i\n", 
+                       pdev->num_resources);
+                return -ENODEV;
+        }
+
+        if (pdev->resource[0].flags != IORESOURCE_MEM 
+                        || pdev->resource[1].flags != IORESOURCE_IRQ) {
+                printk(KERN_ERR "hcd probe: invalid resource type\n");
+                return -ENODEV;
+        }
+
+        usb_host_ck = clk_get(0, "usb_hhc_ck");
+        if (IS_ERR(usb_host_ck))
+                return PTR_ERR(usb_host_ck);
+
+        hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id);
+        if (!hcd) {
+                retval = -ENOMEM;
+                goto err0;
+        }
+        hcd->rsrc_start = pdev->resource[0].start;
+        hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+
+        if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+                dev_dbg(&pdev->dev, "request_mem_region failed\n");
+                retval = -EBUSY;
+                goto err1;
+        }
+
+        hcd->regs = (void __iomem *) (int) IO_ADDRESS(hcd->rsrc_start);
+
+        ohci = hcd_to_ohci(hcd);
+        ohci_hcd_init(ohci);
+
+        retval = omap_start_hc(ohci, pdev);
+        if (retval < 0)
+                goto err2;
+
+        retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), SA_INTERRUPT);
+        if (retval == 0)
+                return retval;
+
+        omap_stop_hc(pdev);
+err2:
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err1:
+        usb_put_hcd(hcd);
+err0:
+        clk_put(usb_host_ck);
+        return retval;
+}
+
+
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_omap_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+void usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
+{
+        usb_remove_hcd(hcd);
+        if (machine_is_omap_osk())
+                omap_free_gpio(9);
+        omap_stop_hc(pdev);
+        release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+        usb_put_hcd(hcd);
+        clk_put(usb_host_ck);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int __devinit
+ohci_omap_start (struct usb_hcd *hcd)
+{
+        struct omap_usb_config *config;
+        struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+        int             ret;
+
+        config = hcd->self.controller->platform_data;
+        if (config->otg || config->rwc)
+                writel(OHCI_CTRL_RWC, &ohci->regs->control);
+
+        if ((ret = ohci_run (ohci)) < 0) {
+                dev_err(hcd->self.controller, "can't start\n");
+                ohci_stop (hcd);
+                return ret;
+        }
+        return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver ohci_omap_hc_driver = {
+        .description =          hcd_name,
+        .product_desc =         "OMAP OHCI",
+        .hcd_priv_size =        sizeof(struct ohci_hcd),
+
+        /*
+         * generic hardware linkage
+         */
+        .irq =                  ohci_irq,
+        .flags =                HCD_USB11 | HCD_MEMORY,
+
+        /*
+         * basic lifecycle operations
+         */
+        .start =                ohci_omap_start,
+        .stop =                 ohci_stop,
+
+        /*
+         * managing i/o requests and associated device resources
+         */
+        .urb_enqueue =          ohci_urb_enqueue,
+        .urb_dequeue =          ohci_urb_dequeue,
+        .endpoint_disable =     ohci_endpoint_disable,
+
+        /*
+         * scheduling support
+         */
+        .get_frame_number =     ohci_get_frame,
+
+        /*
+         * root hub support
+         */
+        .hub_status_data =      ohci_hub_status_data,
+        .hub_control =          ohci_hub_control,
+#ifdef  CONFIG_USB_SUSPEND
+        .hub_suspend =          ohci_hub_suspend,
+        .hub_resume =           ohci_hub_resume,
+#endif
+        .start_port_reset =     ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_omap_drv_probe(struct device *dev)
+{
+        return usb_hcd_omap_probe(&ohci_omap_hc_driver,
+                                to_platform_device(dev));
+}
+
+static int ohci_hcd_omap_drv_remove(struct device *dev)
+{
+        struct platform_device  *pdev = to_platform_device(dev);
+        struct usb_hcd          *hcd = dev_get_drvdata(dev);
+        struct ohci_hcd         *ohci = hcd_to_ohci (hcd);
+
+        usb_hcd_omap_remove(hcd, pdev);
+        if (ohci->transceiver) {
+                (void) otg_set_host(ohci->transceiver, 0);
+                put_device(ohci->transceiver->dev);
+        }
+        dev_set_drvdata(dev, NULL);
+
+        return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef  CONFIG_PM
+
+/* states match PCI usage, always suspending the root hub except that
+ * 4 ~= D3cold (ACPI D3) with clock off (resume sees reset).
+ */
+
+static int ohci_omap_suspend(struct device *dev, u32 state, u32 level)
+{
+        struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
+        int             status = -EINVAL;
+
+        if (level != SUSPEND_POWER_DOWN)
+                return 0;
+        if (state <= dev->power.power_state)
+                return 0;
+
+        dev_dbg(dev, "suspend to %d\n", state);
+        down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+        status = ohci_hub_suspend(ohci_to_hcd(ohci));
+        if (status == 0) {
+                if (state >= 4) {
+                        omap_ohci_clock_power(0);
+                        ohci_to_hcd(ohci)->self.root_hub->state =
+                                        USB_STATE_SUSPENDED;
+                        state = 4;
+                }
+                ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
+                dev->power.power_state = state;
+        }
+        up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+        return status;
+}
+
+static int ohci_omap_resume(struct device *dev, u32 level)
+{
+        struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
+        int             status = 0;
+
+        if (level != RESUME_POWER_ON)
+                return 0;
+
+        switch (dev->power.power_state) {
+        case 0:
+                break;
+        case 4:
+                if (time_before(jiffies, ohci->next_statechange))
+                        msleep(5);
+                ohci->next_statechange = jiffies;
+                omap_ohci_clock_power(1);
+                /* FALLTHROUGH */
+        default:
+                dev_dbg(dev, "resume from %d\n", dev->power.power_state);
+#ifdef  CONFIG_USB_SUSPEND
+                /* get extra cleanup even if remote wakeup isn't in use */
+                status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub);
+#else
+                down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+                status = ohci_hub_resume(ohci_to_hcd(ohci));
+                up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+#endif
+                if (status == 0)
+                        dev->power.power_state = 0;
+                break;
+        }
+        return status;
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Driver definition to register with the OMAP bus
+ */
+static struct device_driver ohci_hcd_omap_driver = {
+        .name           = "ohci",
+        .bus            = &platform_bus_type,
+        .probe          = ohci_hcd_omap_drv_probe,
+        .remove         = ohci_hcd_omap_drv_remove,
+#ifdef  CONFIG_PM
+        .suspend        = ohci_omap_suspend,
+        .resume         = ohci_omap_resume,
+#endif
+};
+
+static int __init ohci_hcd_omap_init (void)
+{
+        printk (KERN_DEBUG "%s: " DRIVER_INFO " (OMAP)\n", hcd_name);
+        if (usb_disabled())
+                return -ENODEV;
+
+        pr_debug("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
+                sizeof (struct ed), sizeof (struct td));
+
+        return driver_register(&ohci_hcd_omap_driver);
+}
+
+static void __exit ohci_hcd_omap_cleanup (void)
+{
+        driver_unregister(&ohci_hcd_omap_driver);
+}
+
+module_init (ohci_hcd_omap_init);
+module_exit (ohci_hcd_omap_cleanup);