arch/arm/mach-tegra/include/mach/usb_phy.h

   1 /*
   2  * arch/arm/mach-tegra/include/mach/usb_phy.h
   3  *
   4  * Copyright (C) 2010 Google, Inc.
   5  *
   6  * This software is licensed under the terms of the GNU General Public
   7  * License version 2, as published by the Free Software Foundation, and
   8  * may be copied, distributed, and modified under those terms.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16
  17 #ifndef __MACH_USB_PHY_H
  18 #define __MACH_USB_PHY_H
  19
  20 #include <linux/clk.h>
  21 #include <linux/usb/otg.h>
  22
  23 struct tegra_utmip_config {
  24         u8 hssync_start_delay;
  25         u8 elastic_limit;
  26         u8 idle_wait_delay;
  27         u8 term_range_adj;
  28         u8 xcvr_setup;
  29         u8 xcvr_lsfslew;
  30         u8 xcvr_lsrslew;
  31 };
  32
  33 struct tegra_ulpi_config {
  34         int reset_gpio;
  35         const char *clk;
  36 };
  37
  38 enum tegra_usb_phy_port_speed {
  39         TEGRA_USB_PHY_PORT_SPEED_FULL = 0,
  40         TEGRA_USB_PHY_PORT_SPEED_LOW,
  41         TEGRA_USB_PHY_PORT_SPEED_HIGH,
  42 };
  43
  44 enum tegra_usb_phy_mode {
  45         TEGRA_USB_PHY_MODE_DEVICE,
  46         TEGRA_USB_PHY_MODE_HOST,
  47 };
  48
  49 struct tegra_xtal_freq;
  50
  51 struct tegra_usb_phy {
  52         int instance;
  53         const struct tegra_xtal_freq *freq;
  54         void __iomem *regs;
  55         void __iomem *pad_regs;
  56         struct clk *clk;
  57         struct clk *pll_u;
  58         struct clk *pad_clk;
  59         enum tegra_usb_phy_mode mode;
  60         void *config;
  61         struct otg_transceiver *ulpi;
  62 };
  63
  64 struct tegra_usb_phy *tegra_usb_phy_open(int instance, void __iomem *regs,
  65                         void *config, enum tegra_usb_phy_mode phy_mode);
  66
  67 int tegra_usb_phy_power_on(struct tegra_usb_phy *phy);
  68
  69 void tegra_usb_phy_clk_disable(struct tegra_usb_phy *phy);
  70
  71 void tegra_usb_phy_clk_enable(struct tegra_usb_phy *phy);
  72
  73 void tegra_usb_phy_power_off(struct tegra_usb_phy *phy);
  74
  75 void tegra_usb_phy_preresume(struct tegra_usb_phy *phy);
  76
  77 void tegra_usb_phy_postresume(struct tegra_usb_phy *phy);
  78
  79 void tegra_ehci_phy_restore_start(struct tegra_usb_phy *phy,
  80                                  enum tegra_usb_phy_port_speed port_speed);
  81
  82 void tegra_ehci_phy_restore_end(struct tegra_usb_phy *phy);
  83
  84 void tegra_usb_phy_close(struct tegra_usb_phy *phy);
  85
  86 #endif /* __MACH_USB_PHY_H */