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git01.mediatek.com / filogic / uboot / d1cb3f660aed0273d59ea37a3db08967ef0f4656 / . / drivers / usb / cdns3 / drd.h
blob: fffda7b43a49d8f75e6410d4175c4cecbd7e1b38 [file] [log] [blame]
Vignesh Raghavendrab1a49282019-10-01 17:26:33 +0530[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Cadence USB3 DRD header file.
4 *
5 * Copyright (C) 2018-2019 Cadence.
6 *
7 * Author: Pawel Laszczak <pawell@cadence.com>
8 */
9#ifndef __LINUX_CDNS3_DRD
10#define __LINUX_CDNS3_DRD
11
Simon Glass4dcacfc2020-05-10 11:40:13 -0600[diff] [blame]12#include <linux/bitops.h>
Vignesh Raghavendrab1a49282019-10-01 17:26:33 +0530[diff] [blame]13#include <linux/types.h>
14#include <linux/usb/otg.h>
15#include "core.h"
16
17/* DRD register interface for version v1. */
18struct cdns3_otg_regs {
19 __le32 did;
20 __le32 rid;
21 __le32 capabilities;
22 __le32 reserved1;
23 __le32 cmd;
24 __le32 sts;
25 __le32 state;
26 __le32 reserved2;
27 __le32 ien;
28 __le32 ivect;
29 __le32 refclk;
30 __le32 tmr;
31 __le32 reserved3[4];
32 __le32 simulate;
33 __le32 override;
34 __le32 susp_ctrl;
35 __le32 reserved4;
36 __le32 anasts;
37 __le32 adp_ramp_time;
38 __le32 ctrl1;
39 __le32 ctrl2;
40};
41
42/* DRD register interface for version v0. */
43struct cdns3_otg_legacy_regs {
44 __le32 cmd;
45 __le32 sts;
46 __le32 state;
47 __le32 refclk;
48 __le32 ien;
49 __le32 ivect;
50 __le32 reserved1[3];
51 __le32 tmr;
52 __le32 reserved2[2];
53 __le32 version;
54 __le32 capabilities;
55 __le32 reserved3[2];
56 __le32 simulate;
57 __le32 reserved4[5];
58 __le32 ctrl1;
59};
60
61/*
62 * Common registers interface for both version of DRD.
63 */
64struct cdns3_otg_common_regs {
65 __le32 cmd;
66 __le32 sts;
67 __le32 state;
68 __le32 different1;
69 __le32 ien;
70 __le32 ivect;
71};
72
73/* CDNS_RID - bitmasks */
74#define CDNS_RID(p) ((p) & GENMASK(15, 0))
75
76/* CDNS_VID - bitmasks */
77#define CDNS_DID(p) ((p) & GENMASK(31, 0))
78
79/* OTGCMD - bitmasks */
80/* "Request the bus for Device mode. */
81#define OTGCMD_DEV_BUS_REQ BIT(0)
82/* Request the bus for Host mode */
83#define OTGCMD_HOST_BUS_REQ BIT(1)
84/* Enable OTG mode. */
85#define OTGCMD_OTG_EN BIT(2)
86/* Disable OTG mode */
87#define OTGCMD_OTG_DIS BIT(3)
88/*"Configure OTG as A-Device. */
89#define OTGCMD_A_DEV_EN BIT(4)
90/*"Configure OTG as A-Device. */
91#define OTGCMD_A_DEV_DIS BIT(5)
92/* Drop the bus for Device mod e. */
93#define OTGCMD_DEV_BUS_DROP BIT(8)
94/* Drop the bus for Host mode*/
95#define OTGCMD_HOST_BUS_DROP BIT(9)
96/* Power Down USBSS-DEV. */
97#define OTGCMD_DEV_POWER_OFF BIT(11)
98/* Power Down CDNSXHCI. */
99#define OTGCMD_HOST_POWER_OFF BIT(12)
100
101/* OTGIEN - bitmasks */
102/* ID change interrupt enable */
103#define OTGIEN_ID_CHANGE_INT BIT(0)
104/* Vbusvalid fall detected interrupt enable.*/
105#define OTGIEN_VBUSVALID_RISE_INT BIT(4)
106/* Vbusvalid fall detected interrupt enable */
107#define OTGIEN_VBUSVALID_FALL_INT BIT(5)
108
109/* OTGSTS - bitmasks */
110/*
111 * Current value of the ID pin. It is only valid when idpullup in
112 * OTGCTRL1_TYPE register is set to '1'.
113 */
114#define OTGSTS_ID_VALUE BIT(0)
115/* Current value of the vbus_valid */
116#define OTGSTS_VBUS_VALID BIT(1)
117/* Current value of the b_sess_vld */
118#define OTGSTS_SESSION_VALID BIT(2)
119/*Device mode is active*/
120#define OTGSTS_DEV_ACTIVE BIT(3)
121/* Host mode is active. */
122#define OTGSTS_HOST_ACTIVE BIT(4)
123/* OTG Controller not ready. */
124#define OTGSTS_OTG_NRDY_MASK BIT(11)
125#define OTGSTS_OTG_NRDY(p) ((p) & OTGSTS_OTG_NRDY_MASK)
126/*
127 * Value of the strap pins.
128 * 000 - no default configuration
129 * 010 - Controller initiall configured as Host
130 * 100 - Controller initially configured as Device
131 */
132#define OTGSTS_STRAP(p) (((p) & GENMASK(14, 12)) >> 12)
133#define OTGSTS_STRAP_NO_DEFAULT_CFG 0x00
134#define OTGSTS_STRAP_HOST_OTG 0x01
135#define OTGSTS_STRAP_HOST 0x02
136#define OTGSTS_STRAP_GADGET 0x04
137/* Host mode is turned on. */
138#define OTGSTS_XHCI_READY BIT(26)
139/* "Device mode is turned on .*/
140#define OTGSTS_DEV_READY BIT(27)
141
142/* OTGSTATE- bitmasks */
143#define OTGSTATE_DEV_STATE_MASK GENMASK(2, 0)
144#define OTGSTATE_HOST_STATE_MASK GENMASK(5, 3)
145#define OTGSTATE_HOST_STATE_IDLE 0x0
146#define OTGSTATE_HOST_STATE_VBUS_FALL 0x7
147#define OTGSTATE_HOST_STATE(p) (((p) & OTGSTATE_HOST_STATE_MASK) >> 3)
148
149/* OTGREFCLK - bitmasks */
150#define OTGREFCLK_STB_CLK_SWITCH_EN BIT(31)
151
152/* OVERRIDE - bitmasks */
153#define OVERRIDE_IDPULLUP BIT(0)
154/* Only for CDNS3_CONTROLLER_V0 version */
155#define OVERRIDE_IDPULLUP_V0 BIT(24)
156
157int cdns3_is_host(struct cdns3 *cdns);
158int cdns3_is_device(struct cdns3 *cdns);
159int cdns3_get_id(struct cdns3 *cdns);
160int cdns3_get_vbus(struct cdns3 *cdns);
161int cdns3_drd_init(struct cdns3 *cdns);
162int cdns3_drd_exit(struct cdns3 *cdns);
163int cdns3_drd_update_mode(struct cdns3 *cdns);
164int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on);
165int cdns3_drd_switch_host(struct cdns3 *cdns, int on);
166
167#endif /* __LINUX_CDNS3_DRD */