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