7e472402ca
Enable the dra7x errata workaround for false disconnect problem with USB2PHY. False disconnects were detected with some of the devices. Reduce the sensitivity of the disconnect logic within the USB2PHY subsystem to enusre these false disconnects are not registered. [george.cherian@ti.com] While at that, pass proper flags for each SoC's. This is a common driver used across OMAP4,OMAP5,DRA7xx and AM437x USB2PHY. False disconnect workaround is currently applicable for only DRA7x. Signed-off-by: Austin Beam <austinbeam@ti.com> Signed-off-by: George Cherian <george.cherian@ti.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/*
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* omap_usb.h -- omap usb2 phy header file
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Author: Kishon Vijay Abraham I <kishon@ti.com>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __DRIVERS_OMAP_USB2_H
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#define __DRIVERS_OMAP_USB2_H
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#include <linux/io.h>
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#include <linux/usb/otg.h>
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struct usb_dpll_params {
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u16 m;
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u8 n;
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u8 freq:3;
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u8 sd;
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u32 mf;
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};
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struct omap_usb {
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struct usb_phy phy;
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struct phy_companion *comparator;
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void __iomem *pll_ctrl_base;
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void __iomem *phy_base;
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struct device *dev;
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struct device *control_dev;
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struct clk *wkupclk;
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struct clk *optclk;
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u8 flags;
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};
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struct usb_phy_data {
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const char *label;
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u8 flags;
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};
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/* Driver Flags */
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#define OMAP_USB2_HAS_START_SRP (1 << 0)
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#define OMAP_USB2_HAS_SET_VBUS (1 << 1)
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#define OMAP_USB2_CALIBRATE_FALSE_DISCONNECT (1 << 2)
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#define phy_to_omapusb(x) container_of((x), struct omap_usb, phy)
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#if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE)
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extern int omap_usb2_set_comparator(struct phy_companion *comparator);
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#else
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static inline int omap_usb2_set_comparator(struct phy_companion *comparator)
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{
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return -ENODEV;
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}
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#endif
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static inline u32 omap_usb_readl(void __iomem *addr, unsigned offset)
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{
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return __raw_readl(addr + offset);
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}
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static inline void omap_usb_writel(void __iomem *addr, unsigned offset,
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u32 data)
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{
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__raw_writel(data, addr + offset);
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}
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#endif /* __DRIVERS_OMAP_USB_H */
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