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path: root/kernel/drivers/usb/chipidea/ci_hdrc_msm.c
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Diffstat (limited to 'kernel/drivers/usb/chipidea/ci_hdrc_msm.c')
-rw-r--r--kernel/drivers/usb/chipidea/ci_hdrc_msm.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/kernel/drivers/usb/chipidea/ci_hdrc_msm.c b/kernel/drivers/usb/chipidea/ci_hdrc_msm.c
new file mode 100644
index 000000000..d79ecc08a
--- /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");