diff options
author | Felipe Balbi <balbi@ti.com> | 2013-03-07 11:01:15 +0200 |
---|---|---|
committer | Felipe Balbi <balbi@ti.com> | 2013-03-18 11:18:04 +0200 |
commit | a0e631235a04f8a815a1ecec93ef418f7d1e6086 (patch) | |
tree | 448db1daeeab6801efdedf77e25823ee27a403c8 /drivers/usb/otg/mxs-phy.c | |
parent | 110ff6d04162a8a3b288019eaf84dee0800270e0 (diff) |
usb: phy: move all PHY drivers to drivers/usb/phy/
that's a much more reasonable location for
those drivers. It helps us saving drivers/usb/otg/
for when we actually start adding generic OTG
code.
Also completely delete drivers/usb/otg/ as there's
nothing left there.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/otg/mxs-phy.c')
-rw-r--r-- | drivers/usb/otg/mxs-phy.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c deleted file mode 100644 index 9d4381e64d51..000000000000 --- a/drivers/usb/otg/mxs-phy.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * Copyright 2012 Freescale Semiconductor, Inc. - * Copyright (C) 2012 Marek Vasut <marex@denx.de> - * on behalf of DENX Software Engineering GmbH - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/usb/otg.h> -#include <linux/stmp_device.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/io.h> - -#define DRIVER_NAME "mxs_phy" - -#define HW_USBPHY_PWD 0x00 -#define HW_USBPHY_CTRL 0x30 -#define HW_USBPHY_CTRL_SET 0x34 -#define HW_USBPHY_CTRL_CLR 0x38 - -#define BM_USBPHY_CTRL_SFTRST BIT(31) -#define BM_USBPHY_CTRL_CLKGATE BIT(30) -#define BM_USBPHY_CTRL_ENUTMILEVEL3 BIT(15) -#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14) -#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1) - -struct mxs_phy { - struct usb_phy phy; - struct clk *clk; -}; - -#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) - -static void mxs_phy_hw_init(struct mxs_phy *mxs_phy) -{ - void __iomem *base = mxs_phy->phy.io_priv; - - stmp_reset_block(base + HW_USBPHY_CTRL); - - /* Power up the PHY */ - writel(0, base + HW_USBPHY_PWD); - - /* enable FS/LS device */ - writel(BM_USBPHY_CTRL_ENUTMILEVEL2 | - BM_USBPHY_CTRL_ENUTMILEVEL3, - base + HW_USBPHY_CTRL_SET); -} - -static int mxs_phy_init(struct usb_phy *phy) -{ - struct mxs_phy *mxs_phy = to_mxs_phy(phy); - - clk_prepare_enable(mxs_phy->clk); - mxs_phy_hw_init(mxs_phy); - - return 0; -} - -static void mxs_phy_shutdown(struct usb_phy *phy) -{ - struct mxs_phy *mxs_phy = to_mxs_phy(phy); - - writel(BM_USBPHY_CTRL_CLKGATE, - phy->io_priv + HW_USBPHY_CTRL_SET); - - clk_disable_unprepare(mxs_phy->clk); -} - -static int mxs_phy_suspend(struct usb_phy *x, int suspend) -{ - struct mxs_phy *mxs_phy = to_mxs_phy(x); - - if (suspend) { - writel(0xffffffff, x->io_priv + HW_USBPHY_PWD); - writel(BM_USBPHY_CTRL_CLKGATE, - x->io_priv + HW_USBPHY_CTRL_SET); - clk_disable_unprepare(mxs_phy->clk); - } else { - clk_prepare_enable(mxs_phy->clk); - writel(BM_USBPHY_CTRL_CLKGATE, - x->io_priv + HW_USBPHY_CTRL_CLR); - writel(0, x->io_priv + HW_USBPHY_PWD); - } - - return 0; -} - -static int mxs_phy_on_connect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - dev_dbg(phy->dev, "%s speed device has connected\n", - (speed == USB_SPEED_HIGH) ? "high" : "non-high"); - - if (speed == USB_SPEED_HIGH) - writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT, - phy->io_priv + HW_USBPHY_CTRL_SET); - - return 0; -} - -static int mxs_phy_on_disconnect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - dev_dbg(phy->dev, "%s speed device has disconnected\n", - (speed == USB_SPEED_HIGH) ? "high" : "non-high"); - - if (speed == USB_SPEED_HIGH) - writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT, - phy->io_priv + HW_USBPHY_CTRL_CLR); - - return 0; -} - -static int mxs_phy_probe(struct platform_device *pdev) -{ - struct resource *res; - void __iomem *base; - struct clk *clk; - struct mxs_phy *mxs_phy; - int ret; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "can't get device resources\n"); - return -ENOENT; - } - - base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); - - clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(clk)) { - dev_err(&pdev->dev, - "can't get the clock, err=%ld", PTR_ERR(clk)); - return PTR_ERR(clk); - } - - mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL); - if (!mxs_phy) { - dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n"); - return -ENOMEM; - } - - mxs_phy->phy.io_priv = base; - mxs_phy->phy.dev = &pdev->dev; - mxs_phy->phy.label = DRIVER_NAME; - mxs_phy->phy.init = mxs_phy_init; - mxs_phy->phy.shutdown = mxs_phy_shutdown; - mxs_phy->phy.set_suspend = mxs_phy_suspend; - mxs_phy->phy.notify_connect = mxs_phy_on_connect; - mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect; - - ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier); - - mxs_phy->clk = clk; - - platform_set_drvdata(pdev, &mxs_phy->phy); - - ret = usb_add_phy_dev(&mxs_phy->phy); - if (ret) - return ret; - - return 0; -} - -static int mxs_phy_remove(struct platform_device *pdev) -{ - struct mxs_phy *mxs_phy = platform_get_drvdata(pdev); - - usb_remove_phy(&mxs_phy->phy); - - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static const struct of_device_id mxs_phy_dt_ids[] = { - { .compatible = "fsl,imx23-usbphy", }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids); - -static struct platform_driver mxs_phy_driver = { - .probe = mxs_phy_probe, - .remove = mxs_phy_remove, - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - .of_match_table = mxs_phy_dt_ids, - }, -}; - -static int __init mxs_phy_module_init(void) -{ - return platform_driver_register(&mxs_phy_driver); -} -postcore_initcall(mxs_phy_module_init); - -static void __exit mxs_phy_module_exit(void) -{ - platform_driver_unregister(&mxs_phy_driver); -} -module_exit(mxs_phy_module_exit); - -MODULE_ALIAS("platform:mxs-usb-phy"); -MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); -MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); -MODULE_DESCRIPTION("Freescale MXS USB PHY driver"); -MODULE_LICENSE("GPL"); |