forked from Minki/linux
32942d33d6
Just like every other family BCM4908 should get its own enum value. That
is required to properly handle it in chipset conditional code.
The real change is excluding BCM4908 from the PLL reprogramming code
(see brcmusb_usb3_pll_54mhz()). I'm not sure what's the BCM4908
reference clock frequency but:
1. BCM4908 custom driver from Broadcom's SDK doesn't reprogram PLL
2. Doing that in Linux driver stopped PHY handling some USB 3.0 devices
This change makes USB 3.0 PHY recognize e.g.:
1. 04e8:6860 - Samsung Electronics Co., Ltd Galaxy series, misc. (MTP mode)
2. 1058:259f - Western Digital My Passport 259F
Broadcom's STB SoCs come with a set of SUN_TOP_CTRL_* registers that
allow reading chip family and product ids. Such a block & register is
missing on BCM4908 so this commit introduces "compatible" string
specific binding.
Fixes: 4b402fa8e0 ("phy: phy-brcm-usb: support PHY on the BCM4908")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220218172459.10431-1-zajec5@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
164 lines
4.3 KiB
C
164 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2014-2017 Broadcom
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*/
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#ifndef _USB_BRCM_COMMON_INIT_H
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#define _USB_BRCM_COMMON_INIT_H
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#include <linux/regmap.h>
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#define USB_CTLR_MODE_HOST 0
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#define USB_CTLR_MODE_DEVICE 1
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#define USB_CTLR_MODE_DRD 2
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#define USB_CTLR_MODE_TYPEC_PD 3
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enum brcmusb_reg_sel {
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BRCM_REGS_CTRL = 0,
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BRCM_REGS_XHCI_EC,
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BRCM_REGS_XHCI_GBL,
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BRCM_REGS_USB_PHY,
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BRCM_REGS_USB_MDIO,
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BRCM_REGS_BDC_EC,
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BRCM_REGS_MAX
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};
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#define USB_CTRL_REG(base, reg) ((void __iomem *)base + USB_CTRL_##reg)
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#define USB_XHCI_EC_REG(base, reg) ((void __iomem *)base + USB_XHCI_EC_##reg)
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#define USB_CTRL_MASK(reg, field) \
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USB_CTRL_##reg##_##field##_MASK
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#define USB_CTRL_SET(base, reg, field) \
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brcm_usb_ctrl_set(USB_CTRL_REG(base, reg), \
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USB_CTRL_##reg##_##field##_MASK)
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#define USB_CTRL_UNSET(base, reg, field) \
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brcm_usb_ctrl_unset(USB_CTRL_REG(base, reg), \
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USB_CTRL_##reg##_##field##_MASK)
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struct brcm_usb_init_params;
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struct brcm_usb_init_ops {
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void (*init_ipp)(struct brcm_usb_init_params *params);
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void (*init_common)(struct brcm_usb_init_params *params);
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void (*init_eohci)(struct brcm_usb_init_params *params);
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void (*init_xhci)(struct brcm_usb_init_params *params);
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void (*uninit_common)(struct brcm_usb_init_params *params);
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void (*uninit_eohci)(struct brcm_usb_init_params *params);
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void (*uninit_xhci)(struct brcm_usb_init_params *params);
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int (*get_dual_select)(struct brcm_usb_init_params *params);
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void (*set_dual_select)(struct brcm_usb_init_params *params, int mode);
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};
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struct brcm_usb_init_params {
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void __iomem *regs[BRCM_REGS_MAX];
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int ioc;
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int ipp;
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int mode;
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u32 family_id;
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u32 product_id;
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int selected_family;
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const char *family_name;
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const u32 *usb_reg_bits_map;
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const struct brcm_usb_init_ops *ops;
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struct regmap *syscon_piarbctl;
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bool wake_enabled;
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bool suspend_with_clocks;
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};
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void brcm_usb_dvr_init_4908(struct brcm_usb_init_params *params);
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void brcm_usb_dvr_init_7445(struct brcm_usb_init_params *params);
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void brcm_usb_dvr_init_7216(struct brcm_usb_init_params *params);
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void brcm_usb_dvr_init_7211b0(struct brcm_usb_init_params *params);
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static inline u32 brcm_usb_readl(void __iomem *addr)
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{
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/*
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* MIPS endianness is configured by boot strap, which also reverses all
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* bus endianness (i.e., big-endian CPU + big endian bus ==> native
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* endian I/O).
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*
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* Other architectures (e.g., ARM) either do not support big endian, or
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* else leave I/O in little endian mode.
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*/
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if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
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return __raw_readl(addr);
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else
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return readl_relaxed(addr);
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}
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static inline void brcm_usb_writel(u32 val, void __iomem *addr)
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{
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/* See brcmnand_readl() comments */
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if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
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__raw_writel(val, addr);
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else
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writel_relaxed(val, addr);
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}
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static inline void brcm_usb_ctrl_unset(void __iomem *reg, u32 mask)
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{
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brcm_usb_writel(brcm_usb_readl(reg) & ~(mask), reg);
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};
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static inline void brcm_usb_ctrl_set(void __iomem *reg, u32 mask)
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{
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brcm_usb_writel(brcm_usb_readl(reg) | (mask), reg);
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};
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static inline void brcm_usb_init_ipp(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->init_ipp)
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ini->ops->init_ipp(ini);
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}
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static inline void brcm_usb_init_common(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->init_common)
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ini->ops->init_common(ini);
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}
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static inline void brcm_usb_init_eohci(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->init_eohci)
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ini->ops->init_eohci(ini);
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}
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static inline void brcm_usb_init_xhci(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->init_xhci)
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ini->ops->init_xhci(ini);
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}
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static inline void brcm_usb_uninit_common(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->uninit_common)
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ini->ops->uninit_common(ini);
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}
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static inline void brcm_usb_uninit_eohci(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->uninit_eohci)
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ini->ops->uninit_eohci(ini);
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}
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static inline void brcm_usb_uninit_xhci(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->uninit_xhci)
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ini->ops->uninit_xhci(ini);
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}
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static inline int brcm_usb_get_dual_select(struct brcm_usb_init_params *ini)
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{
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if (ini->ops->get_dual_select)
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return ini->ops->get_dual_select(ini);
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return 0;
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}
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static inline void brcm_usb_set_dual_select(struct brcm_usb_init_params *ini,
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int mode)
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{
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if (ini->ops->set_dual_select)
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ini->ops->set_dual_select(ini, mode);
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}
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#endif /* _USB_BRCM_COMMON_INIT_H */
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