tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2010 Google, Inc.
4 *
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 */
15
16#ifndef __TEGRA_USB_PHY_H
17#define __TEGRA_USB_PHY_H
18
19#include <linux/clk.h>
20#include <linux/gpio.h>
21#include <linux/regmap.h>
22#include <linux/reset.h>
23#include <linux/usb/otg.h>
24
25/*
26 * utmi_pll_config_in_car_module: true if the UTMI PLL configuration registers
27 * should be set up by clk-tegra, false if by the PHY code
28 * has_hostpc: true if the USB controller has the HOSTPC extension, which
29 * changes the location of the PHCD and PTS fields
30 * requires_usbmode_setup: true if the USBMODE register needs to be set to
31 * enter host mode
32 * requires_extra_tuning_parameters: true if xcvr_hsslew, hssquelch_level
33 * and hsdiscon_level should be set for adequate signal quality
34 * requires_pmc_ao_power_up: true if USB AO is powered down by default
35 */
36
37struct tegra_phy_soc_config {
38 bool utmi_pll_config_in_car_module;
39 bool has_hostpc;
40 bool requires_usbmode_setup;
41 bool requires_extra_tuning_parameters;
42 bool requires_pmc_ao_power_up;
43};
44
45struct tegra_utmip_config {
46 u8 hssync_start_delay;
47 u8 elastic_limit;
48 u8 idle_wait_delay;
49 u8 term_range_adj;
50 bool xcvr_setup_use_fuses;
51 u8 xcvr_setup;
52 u8 xcvr_lsfslew;
53 u8 xcvr_lsrslew;
54 u8 xcvr_hsslew;
55 u8 hssquelch_level;
56 u8 hsdiscon_level;
57};
58
59enum tegra_usb_phy_port_speed {
60 TEGRA_USB_PHY_PORT_SPEED_FULL = 0,
61 TEGRA_USB_PHY_PORT_SPEED_LOW,
62 TEGRA_USB_PHY_PORT_SPEED_HIGH,
63};
64
65struct tegra_xtal_freq;
66
67struct tegra_usb_phy {
68 int irq;
69 int instance;
70 const struct tegra_xtal_freq *freq;
71 void __iomem *regs;
72 void __iomem *pad_regs;
73 struct clk *clk;
74 struct clk *pll_u;
75 struct clk *pad_clk;
76 struct regulator *vbus;
77 struct regmap *pmc_regmap;
78 enum usb_dr_mode mode;
79 void *config;
80 const struct tegra_phy_soc_config *soc_config;
81 struct usb_phy *ulpi;
82 struct usb_phy u_phy;
83 bool is_legacy_phy;
84 bool is_ulpi_phy;
85 struct gpio_desc *reset_gpio;
86 struct reset_control *pad_rst;
87 bool wakeup_enabled;
88 bool pad_wakeup;
89 bool powered_on;
90};
91
92void tegra_usb_phy_preresume(struct usb_phy *phy);
93
94void tegra_usb_phy_postresume(struct usb_phy *phy);
95
96void tegra_ehci_phy_restore_start(struct usb_phy *phy,
97 enum tegra_usb_phy_port_speed port_speed);
98
99void tegra_ehci_phy_restore_end(struct usb_phy *phy);
100
101#endif /* __TEGRA_USB_PHY_H */