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path: root/drivers/usb/chipidea/ci13xxx_msm.c
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Diffstat (limited to 'drivers/usb/chipidea/ci13xxx_msm.c')
-rw-r--r--drivers/usb/chipidea/ci13xxx_msm.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/ci13xxx_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
new file mode 100644
index 00000000000..958069ef95e
--- /dev/null
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -0,0 +1,110 @@
+/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/usb/msm_hsusb_hw.h>
+#include <linux/usb/ulpi.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/chipidea.h>
+
+#include "ci.h"
+
+#define MSM_USB_BASE (udc->hw_bank.abs)
+
+static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
+{
+ struct device *dev = udc->gadget.dev.parent;
+ int val;
+
+ switch (event) {
+ case CI13XXX_CONTROLLER_RESET_EVENT:
+ dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n");
+ writel(0, USB_AHBBURST);
+ writel(0, USB_AHBMODE);
+ break;
+ case CI13XXX_CONTROLLER_STOPPED_EVENT:
+ dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n");
+ /*
+ * Put the transceiver in non-driving mode. Otherwise host
+ * may not detect soft-disconnection.
+ */
+ val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
+ val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
+ val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
+ usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
+ break;
+ default:
+ dev_dbg(dev, "unknown ci13xxx_udc event\n");
+ break;
+ }
+}
+
+static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = {
+ .name = "ci13xxx_msm",
+ .flags = CI13XXX_REGS_SHARED |
+ CI13XXX_REQUIRE_TRANSCEIVER |
+ CI13XXX_PULLUP_ON_VBUS |
+ CI13XXX_DISABLE_STREAMING,
+
+ .notify_event = ci13xxx_msm_notify_event,
+};
+
+static int ci13xxx_msm_probe(struct platform_device *pdev)
+{
+ struct platform_device *plat_ci;
+ int ret;
+
+ dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n");
+
+ plat_ci = platform_device_alloc("ci_hdrc", -1);
+ if (!plat_ci) {
+ dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n");
+ return -ENOMEM;
+ }
+
+ ret = platform_device_add_resources(plat_ci, pdev->resource,
+ pdev->num_resources);
+ if (ret) {
+ dev_err(&pdev->dev, "can't add resources to platform device\n");
+ goto put_platform;
+ }
+
+ ret = platform_device_add_data(plat_ci, &ci13xxx_msm_udc_driver,
+ sizeof(ci13xxx_msm_udc_driver));
+ if (ret)
+ goto put_platform;
+
+ ret = platform_device_add(plat_ci);
+ if (ret)
+ goto put_platform;
+
+ pm_runtime_no_callbacks(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+
+put_platform:
+ platform_device_put(plat_ci);
+
+ return ret;
+}
+
+static struct platform_driver ci13xxx_msm_driver = {
+ .probe = ci13xxx_msm_probe,
+ .driver = { .name = "msm_hsusb", },
+};
+MODULE_ALIAS("platform:msm_hsusb");
+
+static int __init ci13xxx_msm_init(void)
+{
+ return platform_driver_register(&ci13xxx_msm_driver);
+}
+module_init(ci13xxx_msm_init);
+
+MODULE_LICENSE("GPL v2");