193 lines
5.2 KiB
C
193 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2017 MediaTek Inc.
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*/
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#ifndef __LINUX_USB_MUSB_H
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#define __LINUX_USB_MUSB_H
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#include <linux/extcon.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/role.h>
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/* The USB role is defined by the connector used on the board, so long as
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* standards are being followed. (Developer boards sometimes won't.)
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*/
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enum musb_mode {
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MUSB_UNDEFINED = 0,
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MUSB_HOST, /* A or Mini-A connector */
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MUSB_PERIPHERAL, /* B or Mini-B connector */
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MUSB_OTG /* Mini-AB connector */
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};
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enum musb_fifo_style {
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FIFO_RXTX,
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FIFO_TX,
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FIFO_RX
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} __attribute__ ((packed));
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enum musb_buf_mode {
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BUF_SINGLE,
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BUF_DOUBLE
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} __attribute__ ((packed));
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enum musb_ep_mode {
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EP_CONT,
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EP_INT,
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EP_BULK,
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EP_ISO
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} __packed;
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struct musb_fifo_cfg {
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u8 hw_ep_num;
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enum musb_fifo_style style;
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enum musb_buf_mode mode;
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u16 maxpacket;
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enum musb_ep_mode ep_mode;
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};
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#define MUSB_EP_FIFO(ep, st, m, pkt) \
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{ \
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.hw_ep_num = ep, \
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.style = st, \
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.mode = m, \
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.maxpacket = pkt, \
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}
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#define MUSB_EP_FIFO_SINGLE(ep, st, pkt) \
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MUSB_EP_FIFO(ep, st, BUF_SINGLE, pkt)
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#define MUSB_EP_FIFO_DOUBLE(ep, st, pkt) \
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MUSB_EP_FIFO(ep, st, BUF_DOUBLE, pkt)
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struct musb_hdrc_eps_bits {
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const char name[16];
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u8 bits;
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};
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struct musb_hdrc_config {
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struct musb_fifo_cfg *fifo_cfg; /* board fifo configuration */
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unsigned int fifo_cfg_size;/* size of the fifo configuration */
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/* MUSB configuration-specific details */
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unsigned multipoint:1; /* multipoint device */
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unsigned dyn_fifo:1 __deprecated;/* supports dynamic fifo sizing */
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unsigned soft_con:1 __deprecated;/* soft connect required */
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unsigned utm_16:1 __deprecated; /* utm data witdh is 16 bits */
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unsigned big_endian:1; /* true if CPU uses big-endian */
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unsigned mult_bulk_tx:1; /* Tx ep required for multbulk pkts */
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unsigned mult_bulk_rx:1; /* Rx ep required for multbulk pkts */
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unsigned high_iso_tx:1; /* Tx ep required for HB iso */
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unsigned high_iso_rx:1; /* Rx ep required for HD iso */
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unsigned dma:1 __deprecated; /* supports DMA */
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unsigned vendor_req:1 __deprecated; /* vendor registers required */
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u8 num_eps; /* number of endpoints _with_ ep0 */
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u8 dma_channels __deprecated; /* number of dma channels */
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u8 dyn_fifo_size; /* dynamic size in bytes */
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u8 vendor_ctrl __deprecated; /* vendor control reg width */
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u8 vendor_stat __deprecated; /* vendor status reg witdh */
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u8 dma_req_chan __deprecated; /* bitmask for required dma channels */
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u8 ram_bits; /* ram address size */
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struct musb_hdrc_eps_bits *eps_bits __deprecated;
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};
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struct musb_hdrc_platform_data {
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/* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */
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u8 dr_mode;
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/* for clk_get() */
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const char *clock;
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/* (HOST or OTG) switch VBUS on/off */
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int (*set_vbus)(struct device *dev, int is_on);
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/* (HOST or OTG) mA/2 power supplied on (default = 8mA) */
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u8 power;
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/* (PERIPHERAL) mA/2 max power consumed (default = 100mA) */
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u8 min_power;
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/* (HOST or OTG) msec/2 after VBUS on till power good */
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u8 potpgt;
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/* (HOST or OTG) program PHY for external Vbus */
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unsigned extvbus:1;
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/* Power the device on or off */
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int (*set_power)(int state);
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/* MUSB configuration-specific details */
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struct musb_hdrc_config *config;
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/* Architecture specific board data */
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void *board_data;
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/* Platform specific struct musb_ops pointer */
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const void *platform_ops;
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};
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/**
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* MUSB_DR_FORCE_NONE: automatically switch host and periperal mode
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* by IDPIN signal.
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* MUSB_DR_FORCE_HOST: force to enter host mode and override OTG
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* IDPIN signal.
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* MUSB_DR_FORCE_DEVICE: force to enter peripheral mode.
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*/
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enum mt_usb_dr_force_mode {
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MUSB_DR_FORCE_NONE = 0,
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MUSB_DR_FORCE_HOST,
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MUSB_DR_FORCE_DEVICE,
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};
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/**
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* MUSB_DR_OPERATION_NONE: force to tun off usb
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* MUSB_DR_OPERATION_NORMAL: automatically switch host and
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* periperal mode by usb role switch.
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* MUSB_DR_OPERATION_HOST: force to enter host mode.
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* MUSB_DR_OPERATION_DEVICE: force to enter peripheral mode.
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*/
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enum mt_usb_dr_operation_mode {
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MUSB_DR_OPERATION_NONE = 0,
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MUSB_DR_OPERATION_NORMAL,
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MUSB_DR_OPERATION_HOST,
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MUSB_DR_OPERATION_DEVICE,
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};
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/**
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* @vbus: vbus 5V used by host mode
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* @edev: external connector used to detect vbus and iddig changes
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* @vbus_nb: notifier for vbus detection
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* @vbus_work : work of vbus detection notifier, used to avoid sleep in
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* notifier callback which is atomic context
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* @vbus_event : event of vbus detecion notifier
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* @id_nb : notifier for iddig(idpin) detection
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* @id_work : work of iddig detection notifier
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* @id_event : event of iddig detecion notifier
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* @role_sw : use USB Role Switch to support dual-role switch, can't use
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* extcon at the same time, and extcon is deprecated.
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* @role_sw_used : true when the USB Role Switch is used.
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* @manual_drd_enabled: it's true when supports dual-role device by debugfs
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* to switch host/device modes depending on user input.
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*/
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struct otg_switch_mtk {
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struct regulator *vbus;
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struct extcon_dev *edev;
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struct notifier_block vbus_nb;
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struct work_struct vbus_work;
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unsigned long vbus_event;
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struct notifier_block id_nb;
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struct work_struct id_work;
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unsigned long id_event;
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struct usb_role_switch *role_sw;
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bool role_sw_used;
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bool manual_drd_enabled;
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u32 sw_state;
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enum usb_role latest_role;
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enum mt_usb_dr_operation_mode op_mode;
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};
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#endif /* __LINUX_USB_MUSB_H */
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