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 */
87