/* * 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 #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); } t.git/commit/fs/affs/dir.c?h=nds-private-remove&id=3f5c34c6d4688b3b7e1dbc7bbc68a2f03a0d6b0c'>dir.c
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authorManuel Lauss <manuel.lauss@gmail.com>2017-01-24 10:12:00 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-01-24 10:27:34 -0800
commit3f5c34c6d4688b3b7e1dbc7bbc68a2f03a0d6b0c (patch)
treeb9387d85890c4466d9cf3d3145c95e0b07235234 /fs/affs/dir.c
parent62ed8ceda1699acae01b666497f004bfd3d67a6f (diff)
Input: wm97xx - make missing platform data non-fatal
Commit 6480af4915d6 ("power_supply: wm97xx_battery: use power_supply_get_drvdata") made wm97xx platform data mandatory, although it's still optional. This patch fixes an oops during driver probe on one of my MIPS boards with a wm9712. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'fs/affs/dir.c')