X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fusb%2Fchipidea%2Fci_hdrc_msm.c;fp=kernel%2Fdrivers%2Fusb%2Fchipidea%2Fci_hdrc_msm.c;h=d79ecc08a1be75568a2460ac6d180b7cbe7037b5;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git

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");