1 files changed, 143 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/usb.c b/arch/arm/plat-omap/usb.c
new file mode 100644
index 00000000000..f3570884883
--- /dev/null
+++ b/arch/arm/plat-omap/usb.c
@@ -0,0 +1,143 @@
+ /*
+ * arch/arm/plat-omap/usb.c -- platform level USB initialization
+ *
+ * Copyright (C) 2004 Texas Instruments, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#undef  DEBUG
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <plat/usb.h>
+#include <plat/board.h>
+
+#ifdef  CONFIG_ARCH_OMAP_OTG
+
+void __init
+omap_otg_init(struct omap_usb_config *config)
+{
+        u32             syscon;
+        int             status;
+        int             alt_pingroup = 0;
+
+        /* NOTE:  no bus or clock setup (yet?) */
+
+        syscon = omap_readl(OTG_SYSCON_1) & 0xffff;
+        if (!(syscon & OTG_RESET_DONE))
+                pr_debug("USB resets not complete?\n");
+
+        //omap_writew(0, OTG_IRQ_EN);
+
+        /* pin muxing and transceiver pinouts */
+        if (config->pins[0] > 2)        /* alt pingroup 2 */
+                alt_pingroup = 1;
+        syscon |= config->usb0_init(config->pins[0], is_usb0_device(config));
+        syscon |= config->usb1_init(config->pins[1]);
+        syscon |= config->usb2_init(config->pins[2], alt_pingroup);
+        pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
+        omap_writel(syscon, OTG_SYSCON_1);
+
+        syscon = config->hmc_mode;
+        syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */;
+#ifdef  CONFIG_USB_OTG
+        if (config->otg)
+                syscon |= OTG_EN;
+#endif
+        if (cpu_class_is_omap1())
+                pr_debug("USB_TRANSCEIVER_CTRL = %03x\n",
+                         omap_readl(USB_TRANSCEIVER_CTRL));
+        pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2));
+        omap_writel(syscon, OTG_SYSCON_2);
+
+        printk("USB: hmc %d", config->hmc_mode);
+        if (!alt_pingroup)
+                printk(", usb2 alt %d wires", config->pins[2]);
+        else if (config->pins[0])
+                printk(", usb0 %d wires%s", config->pins[0],
+                        is_usb0_device(config) ? " (dev)" : "");
+        if (config->pins[1])
+                printk(", usb1 %d wires", config->pins[1]);
+        if (!alt_pingroup && config->pins[2])
+                printk(", usb2 %d wires", config->pins[2]);
+        if (config->otg)
+                printk(", Mini-AB on usb%d", config->otg - 1);
+        printk("\n");
+
+        if (cpu_class_is_omap1()) {
+                u16 w;
+
+                /* leave USB clocks/controllers off until needed */
+                w = omap_readw(ULPD_SOFT_REQ);
+                w &= ~SOFT_USB_CLK_REQ;
+                omap_writew(w, ULPD_SOFT_REQ);
+
+                w = omap_readw(ULPD_CLOCK_CTRL);
+                w &= ~USB_MCLK_EN;
+                w |= DIS_USB_PVCI_CLK;
+                omap_writew(w, ULPD_CLOCK_CTRL);
+        }
+        syscon = omap_readl(OTG_SYSCON_1);
+        syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
+
+#ifdef  CONFIG_USB_GADGET_OMAP
+        if (config->otg || config->register_dev) {
+                struct platform_device *udc_device = config->udc_device;
+
+                syscon &= ~DEV_IDLE_EN;
+                udc_device->dev.platform_data = config;
+                status = platform_device_register(udc_device);
+                if (status)
+                        pr_debug("can't register UDC device, %d\n", status);
+        }
+#endif
+
+#if     defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
+        if (config->otg || config->register_host) {
+                struct platform_device *ohci_device = config->ohci_device;
+
+                syscon &= ~HST_IDLE_EN;
+                ohci_device->dev.platform_data = config;
+                status = platform_device_register(ohci_device);
+                if (status)
+                        pr_debug("can't register OHCI device, %d\n", status);
+        }
+#endif
+
+#ifdef  CONFIG_USB_OTG
+        if (config->otg) {
+                struct platform_device *otg_device = config->otg_device;
+
+                syscon &= ~OTG_IDLE_EN;
+                otg_device->dev.platform_data = config;
+                status = platform_device_register(otg_device);
+                if (status)
+                        pr_debug("can't register OTG device, %d\n", status);
+        }
+#endif
+        pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1));
+        omap_writel(syscon, OTG_SYSCON_1);
+
+        status = 0;
+}
+
+#else
+void omap_otg_init(struct omap_usb_config *config) {}
+#endif