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[J-linux.git] / include / linux / usb / tegra_usb_phy.h
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2010 Google, Inc.
4  */
5
6 #ifndef __TEGRA_USB_PHY_H
7 #define __TEGRA_USB_PHY_H
8
9 #include <linux/clk.h>
10 #include <linux/regmap.h>
11 #include <linux/reset.h>
12 #include <linux/usb/otg.h>
13
14 struct gpio_desc;
15
16 /*
17  * utmi_pll_config_in_car_module: true if the UTMI PLL configuration registers
18  *     should be set up by clk-tegra, false if by the PHY code
19  * has_hostpc: true if the USB controller has the HOSTPC extension, which
20  *     changes the location of the PHCD and PTS fields
21  * requires_usbmode_setup: true if the USBMODE register needs to be set to
22  *      enter host mode
23  * requires_extra_tuning_parameters: true if xcvr_hsslew, hssquelch_level
24  *      and hsdiscon_level should be set for adequate signal quality
25  * requires_pmc_ao_power_up: true if USB AO is powered down by default
26  */
27
28 struct tegra_phy_soc_config {
29         bool utmi_pll_config_in_car_module;
30         bool has_hostpc;
31         bool requires_usbmode_setup;
32         bool requires_extra_tuning_parameters;
33         bool requires_pmc_ao_power_up;
34 };
35
36 struct tegra_utmip_config {
37         u8 hssync_start_delay;
38         u8 elastic_limit;
39         u8 idle_wait_delay;
40         u8 term_range_adj;
41         bool xcvr_setup_use_fuses;
42         u8 xcvr_setup;
43         u8 xcvr_lsfslew;
44         u8 xcvr_lsrslew;
45         u8 xcvr_hsslew;
46         u8 hssquelch_level;
47         u8 hsdiscon_level;
48 };
49
50 enum tegra_usb_phy_port_speed {
51         TEGRA_USB_PHY_PORT_SPEED_FULL = 0,
52         TEGRA_USB_PHY_PORT_SPEED_LOW,
53         TEGRA_USB_PHY_PORT_SPEED_HIGH,
54 };
55
56 struct tegra_xtal_freq;
57
58 struct tegra_usb_phy {
59         int irq;
60         int instance;
61         const struct tegra_xtal_freq *freq;
62         void __iomem *regs;
63         void __iomem *pad_regs;
64         struct clk *clk;
65         struct clk *pll_u;
66         struct clk *pad_clk;
67         struct regulator *vbus;
68         struct regmap *pmc_regmap;
69         enum usb_dr_mode mode;
70         void *config;
71         const struct tegra_phy_soc_config *soc_config;
72         struct usb_phy *ulpi;
73         struct usb_phy u_phy;
74         bool is_legacy_phy;
75         bool is_ulpi_phy;
76         struct gpio_desc *reset_gpio;
77         struct reset_control *pad_rst;
78         bool wakeup_enabled;
79         bool pad_wakeup;
80         bool powered_on;
81 };
82
83 void tegra_usb_phy_preresume(struct usb_phy *phy);
84
85 void tegra_usb_phy_postresume(struct usb_phy *phy);
86
87 void tegra_ehci_phy_restore_start(struct usb_phy *phy,
88                                  enum tegra_usb_phy_port_speed port_speed);
89
90 void tegra_ehci_phy_restore_end(struct usb_phy *phy);
91
92 #endif /* __TEGRA_USB_PHY_H */
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