From 73a0bd77d60163d8b4639834119a1ed65155c062 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Mon, 10 May 2010 11:21:57 -0500 Subject: USB: mxc: gadget: remove 60mhz clock requirement for freescale mx51 usb core renamed fsl_mx3_udc.c -> fsl_mxc_udc.c for mx51, usb core is clocked from sources that are not 60mhz. Signed-off-by: Dinh Nguyen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/fsl_mx3_udc.c | 104 --------------------------------------- 1 file changed, 104 deletions(-) delete mode 100644 drivers/usb/gadget/fsl_mx3_udc.c (limited to 'drivers/usb/gadget/fsl_mx3_udc.c') diff --git a/drivers/usb/gadget/fsl_mx3_udc.c b/drivers/usb/gadget/fsl_mx3_udc.c deleted file mode 100644 index 20a802ecaa15..000000000000 --- a/drivers/usb/gadget/fsl_mx3_udc.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Copyright (C) 2009 - * Guennadi Liakhovetski, DENX Software Engineering, - * - * Description: - * Helper routines for i.MX3x SoCs from Freescale, needed by the fsl_usb2_udc.c - * driver to function correctly on these systems. - * - * 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. - */ -#include -#include -#include -#include -#include - -#include - -static struct clk *mxc_ahb_clk; -static struct clk *mxc_usb_clk; - -int fsl_udc_clk_init(struct platform_device *pdev) -{ - struct fsl_usb2_platform_data *pdata; - unsigned long freq; - int ret; - - pdata = pdev->dev.platform_data; - - if (!cpu_is_mx35()) { - mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb"); - if (IS_ERR(mxc_ahb_clk)) - return PTR_ERR(mxc_ahb_clk); - - ret = clk_enable(mxc_ahb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n"); - goto eenahb; - } - } - - /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */ - mxc_usb_clk = clk_get(&pdev->dev, "usb"); - if (IS_ERR(mxc_usb_clk)) { - dev_err(&pdev->dev, "clk_get(\"usb\") failed\n"); - ret = PTR_ERR(mxc_usb_clk); - goto egusb; - } - - freq = clk_get_rate(mxc_usb_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; - } - - ret = clk_enable(mxc_usb_clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n"); - goto eenusb; - } - - return 0; - -eenusb: -eclkrate: - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; -egusb: - if (!cpu_is_mx35()) - clk_disable(mxc_ahb_clk); -eenahb: - if (!cpu_is_mx35()) - clk_put(mxc_ahb_clk); - return ret; -} - -void fsl_udc_clk_finalize(struct platform_device *pdev) -{ - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - - /* ULPI transceivers don't need usbpll */ - if (pdata->phy_mode == FSL_USB2_PHY_ULPI) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - mxc_usb_clk = NULL; - } -} - -void fsl_udc_clk_release(void) -{ - if (mxc_usb_clk) { - clk_disable(mxc_usb_clk); - clk_put(mxc_usb_clk); - } - if (!cpu_is_mx35()) { - clk_disable(mxc_ahb_clk); - clk_put(mxc_ahb_clk); - } -} -- cgit v1.2.1