diff options
Diffstat (limited to 'drivers/usb/gadget/udc/fsl_mxc_udc.c')
-rw-r--r-- | drivers/usb/gadget/udc/fsl_mxc_udc.c | 122 |
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); -} |