1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2014-2017 Broadcom
4  */
5 
6 #ifndef _USB_BRCM_COMMON_INIT_H
7 #define _USB_BRCM_COMMON_INIT_H
8 
9 #include <linux/regmap.h>
10 
11 #define USB_CTLR_MODE_HOST 0
12 #define USB_CTLR_MODE_DEVICE 1
13 #define USB_CTLR_MODE_DRD 2
14 #define USB_CTLR_MODE_TYPEC_PD 3
15 
16 enum brcmusb_reg_sel {
17 	BRCM_REGS_CTRL = 0,
18 	BRCM_REGS_XHCI_EC,
19 	BRCM_REGS_XHCI_GBL,
20 	BRCM_REGS_USB_PHY,
21 	BRCM_REGS_USB_MDIO,
22 	BRCM_REGS_BDC_EC,
23 	BRCM_REGS_MAX
24 };
25 
26 #define USB_CTRL_REG(base, reg)	((void __iomem *)base + USB_CTRL_##reg)
27 #define USB_XHCI_EC_REG(base, reg) ((void __iomem *)base + USB_XHCI_EC_##reg)
28 #define USB_CTRL_MASK(reg, field) \
29 	USB_CTRL_##reg##_##field##_MASK
30 #define USB_CTRL_SET(base, reg, field)	\
31 	brcm_usb_ctrl_set(USB_CTRL_REG(base, reg),	\
32 			  USB_CTRL_##reg##_##field##_MASK)
33 #define USB_CTRL_UNSET(base, reg, field)	\
34 	brcm_usb_ctrl_unset(USB_CTRL_REG(base, reg),		\
35 			    USB_CTRL_##reg##_##field##_MASK)
36 
37 #define USB_XHCI_GBL_REG(base, reg) ((void __iomem *)base + USB_XHCI_GBL_##reg)
38 #define USB_XHCI_GBL_SET(base, reg, field) \
39 	brcm_usb_ctrl_set(USB_XHCI_GBL_REG(base, reg), \
40 			  USB_XHCI_GBL_##reg##_##field##_MASK)
41 #define USB_XHCI_GBL_UNSET(base, reg, field) \
42 	brcm_usb_ctrl_unset(USB_XHCI_GBL_REG(base, reg), \
43 			    USB_XHCI_GBL_##reg##_##field##_MASK)
44 
45 struct  brcm_usb_init_params;
46 
47 struct brcm_usb_init_ops {
48 	void (*init_ipp)(struct brcm_usb_init_params *params);
49 	void (*init_common)(struct brcm_usb_init_params *params);
50 	void (*init_eohci)(struct brcm_usb_init_params *params);
51 	void (*init_xhci)(struct brcm_usb_init_params *params);
52 	void (*uninit_common)(struct brcm_usb_init_params *params);
53 	void (*uninit_eohci)(struct brcm_usb_init_params *params);
54 	void (*uninit_xhci)(struct brcm_usb_init_params *params);
55 	int  (*get_dual_select)(struct brcm_usb_init_params *params);
56 	void (*set_dual_select)(struct brcm_usb_init_params *params);
57 };
58 
59 struct  brcm_usb_init_params {
60 	void __iomem *regs[BRCM_REGS_MAX];
61 	int ioc;
62 	int ipp;
63 	int supported_port_modes;
64 	int port_mode;
65 	u32 family_id;
66 	u32 product_id;
67 	int selected_family;
68 	const char *family_name;
69 	const u32 *usb_reg_bits_map;
70 	const struct brcm_usb_init_ops *ops;
71 	struct regmap *syscon_piarbctl;
72 	bool wake_enabled;
73 };
74 
75 void brcm_usb_dvr_init_4908(struct brcm_usb_init_params *params);
76 void brcm_usb_dvr_init_7445(struct brcm_usb_init_params *params);
77 void brcm_usb_dvr_init_7216(struct brcm_usb_init_params *params);
78 void brcm_usb_dvr_init_7211b0(struct brcm_usb_init_params *params);
79 
80 static inline u32 brcm_usb_readl(void __iomem *addr)
81 {
82 	/*
83 	 * MIPS endianness is configured by boot strap, which also reverses all
84 	 * bus endianness (i.e., big-endian CPU + big endian bus ==> native
85 	 * endian I/O).
86 	 *
87 	 * Other architectures (e.g., ARM) either do not support big endian, or
88 	 * else leave I/O in little endian mode.
89 	 */
90 	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
91 		return __raw_readl(addr);
92 	else
93 		return readl_relaxed(addr);
94 }
95 
96 static inline void brcm_usb_writel(u32 val, void __iomem *addr)
97 {
98 	/* See brcmnand_readl() comments */
99 	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
100 		__raw_writel(val, addr);
101 	else
102 		writel_relaxed(val, addr);
103 }
104 
105 static inline void brcm_usb_ctrl_unset(void __iomem *reg, u32 mask)
106 {
107 	brcm_usb_writel(brcm_usb_readl(reg) & ~(mask), reg);
108 };
109 
110 static inline void brcm_usb_ctrl_set(void __iomem *reg, u32 mask)
111 {
112 	brcm_usb_writel(brcm_usb_readl(reg) | (mask), reg);
113 };
114 
115 static inline void brcm_usb_init_ipp(struct brcm_usb_init_params *ini)
116 {
117 	if (ini->ops->init_ipp)
118 		ini->ops->init_ipp(ini);
119 }
120 
121 static inline void brcm_usb_init_common(struct brcm_usb_init_params *ini)
122 {
123 	if (ini->ops->init_common)
124 		ini->ops->init_common(ini);
125 }
126 
127 static inline void brcm_usb_init_eohci(struct brcm_usb_init_params *ini)
128 {
129 	if (ini->ops->init_eohci)
130 		ini->ops->init_eohci(ini);
131 }
132 
133 static inline void brcm_usb_init_xhci(struct brcm_usb_init_params *ini)
134 {
135 	if (ini->ops->init_xhci)
136 		ini->ops->init_xhci(ini);
137 }
138 
139 static inline void brcm_usb_uninit_common(struct brcm_usb_init_params *ini)
140 {
141 	if (ini->ops->uninit_common)
142 		ini->ops->uninit_common(ini);
143 }
144 
145 static inline void brcm_usb_uninit_eohci(struct brcm_usb_init_params *ini)
146 {
147 	if (ini->ops->uninit_eohci)
148 		ini->ops->uninit_eohci(ini);
149 }
150 
151 static inline void brcm_usb_uninit_xhci(struct brcm_usb_init_params *ini)
152 {
153 	if (ini->ops->uninit_xhci)
154 		ini->ops->uninit_xhci(ini);
155 }
156 
157 static inline int brcm_usb_get_dual_select(struct brcm_usb_init_params *ini)
158 {
159 	if (ini->ops->get_dual_select)
160 		return ini->ops->get_dual_select(ini);
161 	return 0;
162 }
163 
164 static inline void brcm_usb_set_dual_select(struct brcm_usb_init_params *ini)
165 {
166 	if (ini->ops->set_dual_select)
167 		ini->ops->set_dual_select(ini);
168 }
169 
170 #endif /* _USB_BRCM_COMMON_INIT_H */
171