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 */
93
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