2 * Copyright (c) 2015 MediaTek Inc.
4 * Zhigang.Wei <zhigang.wei@mediatek.com>
5 * Chunfeng.Yun <chunfeng.yun@mediatek.com>
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
24 * To simplify scheduler algorithm, set a upper limit for ESIT,
25 * if a synchromous ep's ESIT is larger than @XHCI_MTK_MAX_ESIT,
26 * round down to the limit value, that means allocating more
29 #define XHCI_MTK_MAX_ESIT 64
32 * struct mu3h_sch_bw_info: schedule information for bandwidth domain
34 * @bus_bw: array to keep track of bandwidth already used at each uframes
35 * @bw_ep_list: eps in the bandwidth domain
37 * treat a HS root port as a bandwidth domain, but treat a SS root port as
38 * two bandwidth domains, one for IN eps and another for OUT eps.
40 struct mu3h_sch_bw_info {
41 u32 bus_bw[XHCI_MTK_MAX_ESIT];
42 struct list_head bw_ep_list;
46 * struct mu3h_sch_ep_info: schedule information for endpoint
48 * @esit: unit is 125us, equal to 2 << Interval field in ep-context
49 * @num_budget_microframes: number of continuous uframes
50 * (@repeat==1) scheduled within the interval
51 * @bw_cost_per_microframe: bandwidth cost per microframe
52 * @endpoint: linked into bandwidth domain which it belongs to
53 * @ep: address of usb_host_endpoint struct
54 * @offset: which uframe of the interval that transfer should be
55 * scheduled first time within the interval
56 * @repeat: the time gap between two uframes that transfers are
57 * scheduled within a interval. in the simple algorithm, only
58 * assign 0 or 1 to it; 0 means using only one uframe in a
59 * interval, and 1 means using @num_budget_microframes
61 * @pkts: number of packets to be transferred in the scheduled uframes
62 * @cs_count: number of CS that host will trigger
63 * @burst_mode: burst mode for scheduling. 0: normal burst mode,
64 * distribute the bMaxBurst+1 packets for a single burst
65 * according to @pkts and @repeat, repeate the burst multiple
66 * times; 1: distribute the (bMaxBurst+1)*(Mult+1) packets
67 * according to @pkts and @repeat. normal mode is used by
70 struct mu3h_sch_ep_info {
72 u32 num_budget_microframes;
73 u32 bw_cost_per_microframe;
74 struct list_head endpoint;
77 * mtk xHCI scheduling information put into reserved DWs
87 #define MU3C_U3_PORT_MAX 4
88 #define MU3C_U2_PORT_MAX 5
91 * struct mu3c_ippc_regs: MTK ssusb ip port control registers
92 * @ip_pw_ctr0~3: ip power and clock control registers
93 * @ip_pw_sts1~2: ip power and clock status registers
94 * @ip_xhci_cap: ip xHCI capability register
95 * @u3_ctrl_p[x]: ip usb3 port x control register, only low 4bytes are used
96 * @u2_ctrl_p[x]: ip usb2 port x control register, only low 4bytes are used
97 * @u2_phy_pll: usb2 phy pll control register
99 struct mu3c_ippc_regs {
109 __le64 u3_ctrl_p[MU3C_U3_PORT_MAX];
110 __le64 u2_ctrl_p[MU3C_U2_PORT_MAX];
113 __le32 reserved3[33]; /* 0x80 ~ 0xff */
116 struct xhci_hcd_mtk {
119 struct mu3h_sch_bw_info *sch_array;
120 struct mu3c_ippc_regs __iomem *ippc_regs;
124 struct regulator *vusb33;
125 struct regulator *vbus;
126 struct clk *sys_clk; /* sys and mac clock */
128 struct clk *wk_deb_p0; /* port0's wakeup debounce clock */
129 struct clk *wk_deb_p1;
130 struct regmap *pericfg;
137 static inline struct xhci_hcd_mtk *hcd_to_mtk(struct usb_hcd *hcd)
139 return dev_get_drvdata(hcd->self.controller);
142 #if IS_ENABLED(CONFIG_USB_XHCI_MTK)
143 int xhci_mtk_sch_init(struct xhci_hcd_mtk *mtk);
144 void xhci_mtk_sch_exit(struct xhci_hcd_mtk *mtk);
145 int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
146 struct usb_host_endpoint *ep);
147 void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
148 struct usb_host_endpoint *ep);
151 static inline int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd,
152 struct usb_device *udev, struct usb_host_endpoint *ep)
157 static inline void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd,
158 struct usb_device *udev, struct usb_host_endpoint *ep)
164 #endif /* _XHCI_MTK_H_ */