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path: root/drivers/usb/phy/phy-omap-usb2.c
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Diffstat (limited to 'drivers/usb/phy/phy-omap-usb2.c')
-rw-r--r--drivers/usb/phy/phy-omap-usb2.c272
1 files changed, 0 insertions, 272 deletions
diff --git a/drivers/usb/phy/phy-omap-usb2.c b/drivers/usb/phy/phy-omap-usb2.c
deleted file mode 100644
index d266861d24f..00000000000
--- a/drivers/usb/phy/phy-omap-usb2.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/*
- * omap-usb2.c - USB PHY, talking to musb controller in OMAP.
- *
- * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
- * 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.
- *
- * Author: Kishon Vijay Abraham I <kishon@ti.com>
- *
- * 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.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/io.h>
-#include <linux/usb/omap_usb.h>
-#include <linux/usb/phy_companion.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/pm_runtime.h>
-#include <linux/delay.h>
-#include <linux/usb/omap_control_usb.h>
-
-/**
- * omap_usb2_set_comparator - links the comparator present in the sytem with
- * this phy
- * @comparator - the companion phy(comparator) for this phy
- *
- * The phy companion driver should call this API passing the phy_companion
- * filled with set_vbus and start_srp to be used by usb phy.
- *
- * For use by phy companion driver
- */
-int omap_usb2_set_comparator(struct phy_companion *comparator)
-{
- struct omap_usb *phy;
- struct usb_phy *x = usb_get_phy(USB_PHY_TYPE_USB2);
-
- if (IS_ERR(x))
- return -ENODEV;
-
- phy = phy_to_omapusb(x);
- phy->comparator = comparator;
- return 0;
-}
-EXPORT_SYMBOL_GPL(omap_usb2_set_comparator);
-
-static int omap_usb_set_vbus(struct usb_otg *otg, bool enabled)
-{
- struct omap_usb *phy = phy_to_omapusb(otg->phy);
-
- if (!phy->comparator)
- return -ENODEV;
-
- return phy->comparator->set_vbus(phy->comparator, enabled);
-}
-
-static int omap_usb_start_srp(struct usb_otg *otg)
-{
- struct omap_usb *phy = phy_to_omapusb(otg->phy);
-
- if (!phy->comparator)
- return -ENODEV;
-
- return phy->comparator->start_srp(phy->comparator);
-}
-
-static int omap_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
-{
- struct usb_phy *phy = otg->phy;
-
- otg->host = host;
- if (!host)
- phy->state = OTG_STATE_UNDEFINED;
-
- return 0;
-}
-
-static int omap_usb_set_peripheral(struct usb_otg *otg,
- struct usb_gadget *gadget)
-{
- struct usb_phy *phy = otg->phy;
-
- otg->gadget = gadget;
- if (!gadget)
- phy->state = OTG_STATE_UNDEFINED;
-
- return 0;
-}
-
-static int omap_usb2_suspend(struct usb_phy *x, int suspend)
-{
- struct omap_usb *phy = phy_to_omapusb(x);
- int ret;
-
- if (suspend && !phy->is_suspended) {
- omap_control_usb_phy_power(phy->control_dev, 0);
- pm_runtime_put_sync(phy->dev);
- phy->is_suspended = 1;
- } else if (!suspend && phy->is_suspended) {
- ret = pm_runtime_get_sync(phy->dev);
- if (ret < 0) {
- dev_err(phy->dev, "get_sync failed with err %d\n", ret);
- return ret;
- }
- omap_control_usb_phy_power(phy->control_dev, 1);
- phy->is_suspended = 0;
- }
-
- return 0;
-}
-
-static int omap_usb2_probe(struct platform_device *pdev)
-{
- struct omap_usb *phy;
- struct usb_otg *otg;
-
- phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
- if (!phy) {
- dev_err(&pdev->dev, "unable to allocate memory for USB2 PHY\n");
- return -ENOMEM;
- }
-
- otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL);
- if (!otg) {
- dev_err(&pdev->dev, "unable to allocate memory for USB OTG\n");
- return -ENOMEM;
- }
-
- phy->dev = &pdev->dev;
-
- phy->phy.dev = phy->dev;
- phy->phy.label = "omap-usb2";
- phy->phy.set_suspend = omap_usb2_suspend;
- phy->phy.otg = otg;
- phy->phy.type = USB_PHY_TYPE_USB2;
-
- phy->control_dev = omap_get_control_dev();
- if (IS_ERR(phy->control_dev)) {
- dev_dbg(&pdev->dev, "Failed to get control device\n");
- return -ENODEV;
- }
-
- phy->is_suspended = 1;
- omap_control_usb_phy_power(phy->control_dev, 0);
-
- otg->set_host = omap_usb_set_host;
- otg->set_peripheral = omap_usb_set_peripheral;
- otg->set_vbus = omap_usb_set_vbus;
- otg->start_srp = omap_usb_start_srp;
- otg->phy = &phy->phy;
-
- phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k");
- if (IS_ERR(phy->wkupclk)) {
- dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n");
- return PTR_ERR(phy->wkupclk);
- }
- clk_prepare(phy->wkupclk);
-
- phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m");
- if (IS_ERR(phy->optclk))
- dev_vdbg(&pdev->dev, "unable to get refclk960m\n");
- else
- clk_prepare(phy->optclk);
-
- usb_add_phy_dev(&phy->phy);
-
- platform_set_drvdata(pdev, phy);
-
- pm_runtime_enable(phy->dev);
-
- return 0;
-}
-
-static int omap_usb2_remove(struct platform_device *pdev)
-{
- struct omap_usb *phy = platform_get_drvdata(pdev);
-
- clk_unprepare(phy->wkupclk);
- if (!IS_ERR(phy->optclk))
- clk_unprepare(phy->optclk);
- usb_remove_phy(&phy->phy);
-
- return 0;
-}
-
-#ifdef CONFIG_PM_RUNTIME
-
-static int omap_usb2_runtime_suspend(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct omap_usb *phy = platform_get_drvdata(pdev);
-
- clk_disable(phy->wkupclk);
- if (!IS_ERR(phy->optclk))
- clk_disable(phy->optclk);
-
- return 0;
-}
-
-static int omap_usb2_runtime_resume(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct omap_usb *phy = platform_get_drvdata(pdev);
- int ret;
-
- ret = clk_enable(phy->wkupclk);
- if (ret < 0) {
- dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
- goto err0;
- }
-
- if (!IS_ERR(phy->optclk)) {
- ret = clk_enable(phy->optclk);
- if (ret < 0) {
- dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
- goto err1;
- }
- }
-
- return 0;
-
-err1:
- clk_disable(phy->wkupclk);
-
-err0:
- return ret;
-}
-
-static const struct dev_pm_ops omap_usb2_pm_ops = {
- SET_RUNTIME_PM_OPS(omap_usb2_runtime_suspend, omap_usb2_runtime_resume,
- NULL)
-};
-
-#define DEV_PM_OPS (&omap_usb2_pm_ops)
-#else
-#define DEV_PM_OPS NULL
-#endif
-
-#ifdef CONFIG_OF
-static const struct of_device_id omap_usb2_id_table[] = {
- { .compatible = "ti,omap-usb2" },
- {}
-};
-MODULE_DEVICE_TABLE(of, omap_usb2_id_table);
-#endif
-
-static struct platform_driver omap_usb2_driver = {
- .probe = omap_usb2_probe,
- .remove = omap_usb2_remove,
- .driver = {
- .name = "omap-usb2",
- .owner = THIS_MODULE,
- .pm = DEV_PM_OPS,
- .of_match_table = of_match_ptr(omap_usb2_id_table),
- },
-};
-
-module_platform_driver(omap_usb2_driver);
-
-MODULE_ALIAS("platform: omap_usb2");
-MODULE_AUTHOR("Texas Instruments Inc.");
-MODULE_DESCRIPTION("OMAP USB2 phy driver");
-MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-21 02:42:00 +0000