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path: root/drivers/usb/gadget/udc/fsl_mxc_udc.c
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Diffstat (limited to 'drivers/usb/gadget/udc/fsl_mxc_udc.c')
-rw-r--r--drivers/usb/gadget/udc/fsl_mxc_udc.c122
1 files changed, 0 insertions, 122 deletions
diff --git a/drivers/usb/gadget/udc/fsl_mxc_udc.c b/drivers/usb/gadget/udc/fsl_mxc_udc.c
deleted file mode 100644
index 5a321992decc..000000000000
--- a/drivers/usb/gadget/udc/fsl_mxc_udc.c
+++ /dev/null
@@ -1,122 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2009
- * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
- *
- * Description:
- * Helper routines for i.MX3x SoCs from Freescale, needed by the fsl_usb2_udc.c
- * driver to function correctly on these systems.
- */
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/fsl_devices.h>
-#include <linux/mod_devicetable.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-
-#include "fsl_usb2_udc.h"
-
-static struct clk *mxc_ahb_clk;
-static struct clk *mxc_per_clk;
-static struct clk *mxc_ipg_clk;
-
-/* workaround ENGcm09152 for i.MX35 */
-#define MX35_USBPHYCTRL_OFFSET 0x600
-#define USBPHYCTRL_OTGBASE_OFFSET 0x8
-#define USBPHYCTRL_EVDO (1 << 23)
-
-int fsl_udc_clk_init(struct platform_device *pdev)
-{
- struct fsl_usb2_platform_data *pdata;
- unsigned long freq;
- int ret;
-
- pdata = dev_get_platdata(&pdev->dev);
-
- mxc_ipg_clk = devm_clk_get(&pdev->dev, "ipg");
- if (IS_ERR(mxc_ipg_clk)) {
- dev_err(&pdev->dev, "clk_get(\"ipg\") failed\n");
- return PTR_ERR(mxc_ipg_clk);
- }
-
- mxc_ahb_clk = devm_clk_get(&pdev->dev, "ahb");
- if (IS_ERR(mxc_ahb_clk)) {
- dev_err(&pdev->dev, "clk_get(\"ahb\") failed\n");
- return PTR_ERR(mxc_ahb_clk);
- }
-
- mxc_per_clk = devm_clk_get(&pdev->dev, "per");
- if (IS_ERR(mxc_per_clk)) {
- dev_err(&pdev->dev, "clk_get(\"per\") failed\n");
- return PTR_ERR(mxc_per_clk);
- }
-
- clk_prepare_enable(mxc_ipg_clk);
- clk_prepare_enable(mxc_ahb_clk);
- clk_prepare_enable(mxc_per_clk);
-
- /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */
- if (!strcmp(pdev->id_entry->name, "imx-udc-mx27")) {
- freq = clk_get_rate(mxc_per_clk);
- if (pdata->phy_mode != FSL_USB2_PHY_ULPI &&
- (freq < 59999000 || freq > 60001000)) {
- dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq);
- ret = -EINVAL;
- goto eclkrate;
- }
- }
-
- return 0;
-
-eclkrate:
- clk_disable_unprepare(mxc_ipg_clk);
- clk_disable_unprepare(mxc_ahb_clk);
- clk_disable_unprepare(mxc_per_clk);
- mxc_per_clk = NULL;
- return ret;
-}
-
-int fsl_udc_clk_finalize(struct platform_device *pdev)
-{
- struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
- int ret = 0;
-
- /* workaround ENGcm09152 for i.MX35 */
- if (pdata->workaround & FLS_USB2_WORKAROUND_ENGCM09152) {
- unsigned int v;
- struct resource *res = platform_get_resource
- (pdev, IORESOURCE_MEM, 0);
- void __iomem *phy_regs = ioremap(res->start +
- MX35_USBPHYCTRL_OFFSET, 512);
- if (!phy_regs) {
- dev_err(&pdev->dev, "ioremap for phy address fails\n");
- ret = -EINVAL;
- goto ioremap_err;
- }
-
- v = readl(phy_regs + USBPHYCTRL_OTGBASE_OFFSET);
- writel(v | USBPHYCTRL_EVDO,
- phy_regs + USBPHYCTRL_OTGBASE_OFFSET);
-
- iounmap(phy_regs);
- }
-
-
-ioremap_err:
- /* ULPI transceivers don't need usbpll */
- if (pdata->phy_mode == FSL_USB2_PHY_ULPI) {
- clk_disable_unprepare(mxc_per_clk);
- mxc_per_clk = NULL;
- }
-
- return ret;
-}
-
-void fsl_udc_clk_release(void)
-{
- if (mxc_per_clk)
- clk_disable_unprepare(mxc_per_clk);
- clk_disable_unprepare(mxc_ahb_clk);
- clk_disable_unprepare(mxc_ipg_clk);
-}