include/linux/phy/omap_usb.h

   1 /*
   2  * omap_usb.h -- omap usb2 phy header file
   3  *
   4  * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * Author: Kishon Vijay Abraham I <kishon@ti.com>
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  */
  18
  19 #ifndef __DRIVERS_OMAP_USB2_H
  20 #define __DRIVERS_OMAP_USB2_H
  21
  22 #include <linux/io.h>
  23 #include <linux/usb/otg.h>
  24
  25 struct usb_dpll_params {
  26         u16     m;
  27         u8      n;
  28         u8      freq:3;
  29         u8      sd;
  30         u32     mf;
  31 };
  32
  33 enum omap_usb_phy_type {
  34         TYPE_USB2,    /* USB2_PHY, power down in CONTROL_DEV_CONF */
  35         TYPE_DRA7USB2, /* USB2 PHY, power and power_aux e.g. DRA7 */
  36         TYPE_AM437USB2, /* USB2 PHY, power e.g. AM437x */
  37 };
  38
  39 struct omap_usb {
  40         struct usb_phy          phy;
  41         struct phy_companion    *comparator;
  42         void __iomem            *pll_ctrl_base;
  43         void __iomem            *phy_base;
  44         struct device           *dev;
  45         struct device           *control_dev;
  46         struct clk              *wkupclk;
  47         struct clk              *optclk;
  48         u8                      flags;
  49         enum omap_usb_phy_type  type;
  50         struct regmap           *syscon_phy_power; /* ctrl. reg. acces */
  51         unsigned int            power_reg; /* power reg. index within syscon */
  52         u32                     mask;
  53         u32                     power_on;
  54         u32                     power_off;
  55 };
  56
  57 struct usb_phy_data {
  58         const char *label;
  59         u8 flags;
  60         u32 mask;
  61         u32 power_on;
  62         u32 power_off;
  63 };
  64
  65 /* Driver Flags */
  66 #define OMAP_USB2_HAS_START_SRP (1 << 0)
  67 #define OMAP_USB2_HAS_SET_VBUS (1 << 1)
  68 #define OMAP_USB2_CALIBRATE_FALSE_DISCONNECT (1 << 2)
  69
  70 #define OMAP_DEV_PHY_PD         BIT(0)
  71 #define OMAP_USB2_PHY_PD        BIT(28)
  72
  73 #define AM437X_USB2_PHY_PD              BIT(0)
  74 #define AM437X_USB2_OTG_PD              BIT(1)
  75 #define AM437X_USB2_OTGVDET_EN          BIT(19)
  76 #define AM437X_USB2_OTGSESSEND_EN       BIT(20)
  77
  78 #define phy_to_omapusb(x)       container_of((x), struct omap_usb, phy)
  79
  80 #if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE)
  81 extern int omap_usb2_set_comparator(struct phy_companion *comparator);
  82 #else
  83 static inline int omap_usb2_set_comparator(struct phy_companion *comparator)
  84 {
  85         return -ENODEV;
  86 }
  87 #endif
  88
  89 static inline u32 omap_usb_readl(void __iomem *addr, unsigned offset)
  90 {
  91         return __raw_readl(addr + offset);
  92 }
  93
  94 static inline void omap_usb_writel(void __iomem *addr, unsigned offset,
  95         u32 data)
  96 {
  97         __raw_writel(data, addr + offset);
  98 }
  99
 100 #endif /* __DRIVERS_OMAP_USB_H */