Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / chipidea / ci_hdrc_msm.c

diff --git a/kernel/drivers/usb/chipidea/ci_hdrc_msm.c b/kernel/drivers/usb/chipidea/ci_hdrc_msm.c
new file mode 100644 (file)
index 0000000..d79ecc0
--- /dev/null
+++ b/kernel/drivers/usb/chipidea/ci_hdrc_msm.c
@@ -0,0 +1,117 @@
+/* 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   (ci->hw_bank.abs)
+
+static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
+{
+       struct device *dev = ci->gadget.dev.parent;
+
+       switch (event) {
+       case CI_HDRC_CONTROLLER_RESET_EVENT:
+               dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n");
+               writel(0, USB_AHBBURST);
+               writel(0, USB_AHBMODE);
+               usb_phy_init(ci->usb_phy);
+               break;
+       case CI_HDRC_CONTROLLER_STOPPED_EVENT:
+               dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n");
+               /*
+                * Put the phy in non-driving mode. Otherwise host
+                * may not detect soft-disconnection.
+                */
+               usb_phy_notify_disconnect(ci->usb_phy, USB_SPEED_UNKNOWN);
+               break;
+       default:
+               dev_dbg(dev, "unknown ci_hdrc event\n");
+               break;
+       }
+}
+
+static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
+       .name                   = "ci_hdrc_msm",
+       .capoffset              = DEF_CAPOFFSET,
+       .flags                  = CI_HDRC_REGS_SHARED |
+                                 CI_HDRC_DISABLE_STREAMING,
+
+       .notify_event           = ci_hdrc_msm_notify_event,
+};
+
+static int ci_hdrc_msm_probe(struct platform_device *pdev)
+{
+       struct platform_device *plat_ci;
+       struct usb_phy *phy;
+
+       dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n");
+
+       /*
+        * OTG(PHY) driver takes care of PHY initialization, clock management,
+        * powering up VBUS, mapping of registers address space and power
+        * management.
+        */
+       phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
+       if (IS_ERR(phy))
+               return PTR_ERR(phy);
+
+       ci_hdrc_msm_platdata.usb_phy = phy;
+
+       plat_ci = ci_hdrc_add_device(&pdev->dev,
+                               pdev->resource, pdev->num_resources,
+                               &ci_hdrc_msm_platdata);
+       if (IS_ERR(plat_ci)) {
+               dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
+               return PTR_ERR(plat_ci);
+       }
+
+       platform_set_drvdata(pdev, plat_ci);
+
+       pm_runtime_no_callbacks(&pdev->dev);
+       pm_runtime_enable(&pdev->dev);
+
+       return 0;
+}
+
+static int ci_hdrc_msm_remove(struct platform_device *pdev)
+{
+       struct platform_device *plat_ci = platform_get_drvdata(pdev);
+
+       pm_runtime_disable(&pdev->dev);
+       ci_hdrc_remove_device(plat_ci);
+
+       return 0;
+}
+
+static const struct of_device_id msm_ci_dt_match[] = {
+       { .compatible = "qcom,ci-hdrc", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, msm_ci_dt_match);
+
+static struct platform_driver ci_hdrc_msm_driver = {
+       .probe = ci_hdrc_msm_probe,
+       .remove = ci_hdrc_msm_remove,
+       .driver = {
+               .name = "msm_hsusb",
+               .of_match_table = msm_ci_dt_match,
+       },
+};
+
+module_platform_driver(ci_hdrc_msm_driver);
+
+MODULE_ALIAS("platform:msm_hsusb");
+MODULE_ALIAS("platform:ci13xxx_msm");
+MODULE_LICENSE("GPL v2");