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path: root/drivers/usb/dwc3/dwc3-exynos.c
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Diffstat (limited to 'drivers/usb/dwc3/dwc3-exynos.c')
-rw-r--r--drivers/usb/dwc3/dwc3-exynos.c301
1 files changed, 0 insertions, 301 deletions
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
deleted file mode 100644
index 7bd0a95..0000000
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/**
- * dwc3-exynos.c - Samsung EXYNOS DWC3 Specific Glue layer
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * Author: Anton Tikhomirov <av.tikhomirov@samsung.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 of
- * the License as published by the Free Software Foundation.
- *
- * 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/kernel.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/clk.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/usb_phy_generic.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/regulator/consumer.h>
-
-struct dwc3_exynos {
- struct platform_device *usb2_phy;
- struct platform_device *usb3_phy;
- struct device *dev;
-
- struct clk *clk;
- struct clk *susp_clk;
- struct clk *axius_clk;
-
- struct regulator *vdd33;
- struct regulator *vdd10;
-};
-
-static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
-{
- struct usb_phy_generic_platform_data pdata;
- struct platform_device *pdev;
- int ret;
-
- memset(&pdata, 0x00, sizeof(pdata));
-
- pdev = platform_device_alloc("usb_phy_generic", PLATFORM_DEVID_AUTO);
- if (!pdev)
- return -ENOMEM;
-
- exynos->usb2_phy = pdev;
- pdata.type = USB_PHY_TYPE_USB2;
- pdata.gpio_reset = -1;
-
- ret = platform_device_add_data(exynos->usb2_phy, &pdata, sizeof(pdata));
- if (ret)
- goto err1;
-
- pdev = platform_device_alloc("usb_phy_generic", PLATFORM_DEVID_AUTO);
- if (!pdev) {
- ret = -ENOMEM;
- goto err1;
- }
-
- exynos->usb3_phy = pdev;
- pdata.type = USB_PHY_TYPE_USB3;
-
- ret = platform_device_add_data(exynos->usb3_phy, &pdata, sizeof(pdata));
- if (ret)
- goto err2;
-
- ret = platform_device_add(exynos->usb2_phy);
- if (ret)
- goto err2;
-
- ret = platform_device_add(exynos->usb3_phy);
- if (ret)
- goto err3;
-
- return 0;
-
-err3:
- platform_device_del(exynos->usb2_phy);
-
-err2:
- platform_device_put(exynos->usb3_phy);
-
-err1:
- platform_device_put(exynos->usb2_phy);
-
- return ret;
-}
-
-static int dwc3_exynos_remove_child(struct device *dev, void *unused)
-{
- struct platform_device *pdev = to_platform_device(dev);
-
- platform_device_unregister(pdev);
-
- return 0;
-}
-
-static int dwc3_exynos_probe(struct platform_device *pdev)
-{
- struct dwc3_exynos *exynos;
- struct device *dev = &pdev->dev;
- struct device_node *node = dev->of_node;
-
- int ret;
-
- exynos = devm_kzalloc(dev, sizeof(*exynos), GFP_KERNEL);
- if (!exynos)
- return -ENOMEM;
-
- /*
- * Right now device-tree probed devices don't get dma_mask set.
- * Since shared usb code relies on it, set it here for now.
- * Once we move to full device tree support this will vanish off.
- */
- ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
- platform_set_drvdata(pdev, exynos);
-
- ret = dwc3_exynos_register_phys(exynos);
- if (ret) {
- dev_err(dev, "couldn't register PHYs\n");
- return ret;
- }
-
- exynos->dev = dev;
-
- exynos->clk = devm_clk_get(dev, "usbdrd30");
- if (IS_ERR(exynos->clk)) {
- dev_err(dev, "couldn't get clock\n");
- return -EINVAL;
- }
- clk_prepare_enable(exynos->clk);
-
- exynos->susp_clk = devm_clk_get(dev, "usbdrd30_susp_clk");
- if (IS_ERR(exynos->susp_clk)) {
- dev_dbg(dev, "no suspend clk specified\n");
- exynos->susp_clk = NULL;
- }
- clk_prepare_enable(exynos->susp_clk);
-
- if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) {
- exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk");
- if (IS_ERR(exynos->axius_clk)) {
- dev_err(dev, "no AXI UpScaler clk specified\n");
- return -ENODEV;
- }
- clk_prepare_enable(exynos->axius_clk);
- } else {
- exynos->axius_clk = NULL;
- }
-
- exynos->vdd33 = devm_regulator_get(dev, "vdd33");
- if (IS_ERR(exynos->vdd33)) {
- ret = PTR_ERR(exynos->vdd33);
- goto err2;
- }
- ret = regulator_enable(exynos->vdd33);
- if (ret) {
- dev_err(dev, "Failed to enable VDD33 supply\n");
- goto err2;
- }
-
- exynos->vdd10 = devm_regulator_get(dev, "vdd10");
- if (IS_ERR(exynos->vdd10)) {
- ret = PTR_ERR(exynos->vdd10);
- goto err3;
- }
- ret = regulator_enable(exynos->vdd10);
- if (ret) {
- dev_err(dev, "Failed to enable VDD10 supply\n");
- goto err3;
- }
-
- if (node) {
- ret = of_platform_populate(node, NULL, NULL, dev);
- if (ret) {
- dev_err(dev, "failed to add dwc3 core\n");
- goto err4;
- }
- } else {
- dev_err(dev, "no device node, failed to add dwc3 core\n");
- ret = -ENODEV;
- goto err4;
- }
-
- return 0;
-
-err4:
- regulator_disable(exynos->vdd10);
-err3:
- regulator_disable(exynos->vdd33);
-err2:
- clk_disable_unprepare(exynos->axius_clk);
- clk_disable_unprepare(exynos->susp_clk);
- clk_disable_unprepare(exynos->clk);
- return ret;
-}
-
-static int dwc3_exynos_remove(struct platform_device *pdev)
-{
- struct dwc3_exynos *exynos = platform_get_drvdata(pdev);
-
- device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child);
- platform_device_unregister(exynos->usb2_phy);
- platform_device_unregister(exynos->usb3_phy);
-
- clk_disable_unprepare(exynos->axius_clk);
- clk_disable_unprepare(exynos->susp_clk);
- clk_disable_unprepare(exynos->clk);
-
- regulator_disable(exynos->vdd33);
- regulator_disable(exynos->vdd10);
-
- return 0;
-}
-
-static const struct of_device_id exynos_dwc3_match[] = {
- { .compatible = "samsung,exynos5250-dwusb3" },
- { .compatible = "samsung,exynos7-dwusb3" },
- {},
-};
-MODULE_DEVICE_TABLE(of, exynos_dwc3_match);
-
-#ifdef CONFIG_PM_SLEEP
-static int dwc3_exynos_suspend(struct device *dev)
-{
- struct dwc3_exynos *exynos = dev_get_drvdata(dev);
-
- clk_disable(exynos->axius_clk);
- clk_disable(exynos->clk);
-
- regulator_disable(exynos->vdd33);
- regulator_disable(exynos->vdd10);
-
- return 0;
-}
-
-static int dwc3_exynos_resume(struct device *dev)
-{
- struct dwc3_exynos *exynos = dev_get_drvdata(dev);
- int ret;
-
- ret = regulator_enable(exynos->vdd33);
- if (ret) {
- dev_err(dev, "Failed to enable VDD33 supply\n");
- return ret;
- }
- ret = regulator_enable(exynos->vdd10);
- if (ret) {
- dev_err(dev, "Failed to enable VDD10 supply\n");
- return ret;
- }
-
- clk_enable(exynos->clk);
- clk_enable(exynos->axius_clk);
-
- /* runtime set active to reflect active state. */
- pm_runtime_disable(dev);
- pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
-
- return 0;
-}
-
-static const struct dev_pm_ops dwc3_exynos_dev_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(dwc3_exynos_suspend, dwc3_exynos_resume)
-};
-
-#define DEV_PM_OPS (&dwc3_exynos_dev_pm_ops)
-#else
-#define DEV_PM_OPS NULL
-#endif /* CONFIG_PM_SLEEP */
-
-static struct platform_driver dwc3_exynos_driver = {
- .probe = dwc3_exynos_probe,
- .remove = dwc3_exynos_remove,
- .driver = {
- .name = "exynos-dwc3",
- .of_match_table = exynos_dwc3_match,
- .pm = DEV_PM_OPS,
- },
-};
-
-module_platform_driver(dwc3_exynos_driver);
-
-MODULE_ALIAS("platform:exynos-dwc3");
-MODULE_AUTHOR("Anton Tikhomirov <av.tikhomirov@samsung.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("DesignWare USB3 EXYNOS Glue Layer");
generated by cgit v1.1 at 2024-07-21 02:49:22 +0000