drivers/phy/broadcom/phy-brcm-usb-init.h

   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 struct  brcm_usb_init_params;
  38
  39 struct brcm_usb_init_ops {
  40         void (*init_ipp)(struct brcm_usb_init_params *params);
  41         void (*init_common)(struct brcm_usb_init_params *params);
  42         void (*init_eohci)(struct brcm_usb_init_params *params);
  43         void (*init_xhci)(struct brcm_usb_init_params *params);
  44         void (*uninit_common)(struct brcm_usb_init_params *params);
  45         void (*uninit_eohci)(struct brcm_usb_init_params *params);
  46         void (*uninit_xhci)(struct brcm_usb_init_params *params);
  47         int  (*get_dual_select)(struct brcm_usb_init_params *params);
  48         void (*set_dual_select)(struct brcm_usb_init_params *params, int mode);
  49 };
  50
  51 struct  brcm_usb_init_params {
  52         void __iomem *regs[BRCM_REGS_MAX];
  53         int ioc;
  54         int ipp;
  55         int mode;
  56         u32 family_id;
  57         u32 product_id;
  58         int selected_family;
  59         const char *family_name;
  60         const u32 *usb_reg_bits_map;
  61         const struct brcm_usb_init_ops *ops;
  62         struct regmap *syscon_piarbctl;
  63         bool wake_enabled;
  64         bool suspend_with_clocks;
  65 };
  66
  67 void brcm_usb_dvr_init_7445(struct brcm_usb_init_params *params);
  68 void brcm_usb_dvr_init_7216(struct brcm_usb_init_params *params);
  69 void brcm_usb_dvr_init_7211b0(struct brcm_usb_init_params *params);
  70
  71 static inline u32 brcm_usb_readl(void __iomem *addr)
  72 {
  73         /*
  74          * MIPS endianness is configured by boot strap, which also reverses all
  75          * bus endianness (i.e., big-endian CPU + big endian bus ==> native
  76          * endian I/O).
  77          *
  78          * Other architectures (e.g., ARM) either do not support big endian, or
  79          * else leave I/O in little endian mode.
  80          */
  81         if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
  82                 return __raw_readl(addr);
  83         else
  84                 return readl_relaxed(addr);
  85 }
  86
  87 static inline void brcm_usb_writel(u32 val, void __iomem *addr)
  88 {
  89         /* See brcmnand_readl() comments */
  90         if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
  91                 __raw_writel(val, addr);
  92         else
  93                 writel_relaxed(val, addr);
  94 }
  95
  96 static inline void brcm_usb_ctrl_unset(void __iomem *reg, u32 mask)
  97 {
  98         brcm_usb_writel(brcm_usb_readl(reg) & ~(mask), reg);
  99 };
 100
 101 static inline void brcm_usb_ctrl_set(void __iomem *reg, u32 mask)
 102 {
 103         brcm_usb_writel(brcm_usb_readl(reg) | (mask), reg);
 104 };
 105
 106 static inline void brcm_usb_init_ipp(struct brcm_usb_init_params *ini)
 107 {
 108         if (ini->ops->init_ipp)
 109                 ini->ops->init_ipp(ini);
 110 }
 111
 112 static inline void brcm_usb_init_common(struct brcm_usb_init_params *ini)
 113 {
 114         if (ini->ops->init_common)
 115                 ini->ops->init_common(ini);
 116 }
 117
 118 static inline void brcm_usb_init_eohci(struct brcm_usb_init_params *ini)
 119 {
 120         if (ini->ops->init_eohci)
 121                 ini->ops->init_eohci(ini);
 122 }
 123
 124 static inline void brcm_usb_init_xhci(struct brcm_usb_init_params *ini)
 125 {
 126         if (ini->ops->init_xhci)
 127                 ini->ops->init_xhci(ini);
 128 }
 129
 130 static inline void brcm_usb_uninit_common(struct brcm_usb_init_params *ini)
 131 {
 132         if (ini->ops->uninit_common)
 133                 ini->ops->uninit_common(ini);
 134 }
 135
 136 static inline void brcm_usb_uninit_eohci(struct brcm_usb_init_params *ini)
 137 {
 138         if (ini->ops->uninit_eohci)
 139                 ini->ops->uninit_eohci(ini);
 140 }
 141
 142 static inline void brcm_usb_uninit_xhci(struct brcm_usb_init_params *ini)
 143 {
 144         if (ini->ops->uninit_xhci)
 145                 ini->ops->uninit_xhci(ini);
 146 }
 147
 148 static inline int brcm_usb_get_dual_select(struct brcm_usb_init_params *ini)
 149 {
 150         if (ini->ops->get_dual_select)
 151                 return ini->ops->get_dual_select(ini);
 152         return 0;
 153 }
 154
 155 static inline void brcm_usb_set_dual_select(struct brcm_usb_init_params *ini,
 156         int mode)
 157 {
 158         if (ini->ops->set_dual_select)
 159                 ini->ops->set_dual_select(ini, mode);
 160 }
 161
 162 #endif /* _USB_BRCM_COMMON_INIT_H */