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/*
22 * utmi_pll_config_in_car_module: true if the UTMI PLL configuration registers
23 *     should be set up by clk-tegra, false if by the PHY code
24 * has_hostpc: true if the USB controller has the HOSTPC extension, which
25 *     changes the location of the PHCD and PTS fields
26 * requires_usbmode_setup: true if the USBMODE register needs to be set to
27 *      enter host mode
28 * requires_extra_tuning_parameters: true if xcvr_hsslew, hssquelch_level
29 *      and hsdiscon_level should be set for adequate signal quality
30 */
31
32struct tegra_phy_soc_config {
33	bool utmi_pll_config_in_car_module;
34	bool has_hostpc;
35	bool requires_usbmode_setup;
36	bool requires_extra_tuning_parameters;
37};
38
39struct tegra_utmip_config {
40	u8 hssync_start_delay;
41	u8 elastic_limit;
42	u8 idle_wait_delay;
43	u8 term_range_adj;
44	bool xcvr_setup_use_fuses;
45	u8 xcvr_setup;
46	u8 xcvr_lsfslew;
47	u8 xcvr_lsrslew;
48	u8 xcvr_hsslew;
49	u8 hssquelch_level;
50	u8 hsdiscon_level;
51};
52
53enum tegra_usb_phy_port_speed {
54	TEGRA_USB_PHY_PORT_SPEED_FULL = 0,
55	TEGRA_USB_PHY_PORT_SPEED_LOW,
56	TEGRA_USB_PHY_PORT_SPEED_HIGH,
57};
58
59struct tegra_xtal_freq;
60
61struct tegra_usb_phy {
62	int instance;
63	const struct tegra_xtal_freq *freq;
64	void __iomem *regs;
65	void __iomem *pad_regs;
66	struct clk *clk;
67	struct clk *pll_u;
68	struct clk *pad_clk;
69	struct regulator *vbus;
70	enum usb_dr_mode mode;
71	void *config;
72	const struct tegra_phy_soc_config *soc_config;
73	struct usb_phy *ulpi;
74	struct usb_phy u_phy;
75	bool is_legacy_phy;
76	bool is_ulpi_phy;
77	int reset_gpio;
78};
79
80void tegra_usb_phy_preresume(struct usb_phy *phy);
81
82void tegra_usb_phy_postresume(struct usb_phy *phy);
83
84void tegra_ehci_phy_restore_start(struct usb_phy *phy,
85				 enum tegra_usb_phy_port_speed port_speed);
86
87void tegra_ehci_phy_restore_end(struct usb_phy *phy);
88
89#endif /* __TEGRA_USB_PHY_H */
90