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/* SPDX-License-Identifier: GPL-2.0 */
/*
* This is used to for host and peripheral modes of the driver for
* Inventra (Multidrop) Highspeed Dual-Role Controllers: (M)HDRC.
*
* Board initialization should put one of these into dev->platform_data,
* probably on some platform_device named "musb-hdrc". It encapsulates
* key configuration differences between boards.
*/
#ifndef __LINUX_USB_MUSB_H
#define __LINUX_USB_MUSB_H
/* The USB role is defined by the connector used on the board, so long as
* standards are being followed. (Developer boards sometimes won't.)
*/
enum musb_mode {
MUSB_UNDEFINED = 0,
MUSB_HOST, /* A or Mini-A connector */
MUSB_PERIPHERAL, /* B or Mini-B connector */
MUSB_OTG /* Mini-AB connector */
};
struct clk;
enum musb_fifo_style {
FIFO_RXTX,
FIFO_TX,
FIFO_RX
} __attribute__ ((packed));
enum musb_buf_mode {
BUF_SINGLE,
BUF_DOUBLE
} __attribute__ ((packed));
struct musb_fifo_cfg {
u8 hw_ep_num;
enum musb_fifo_style style;
enum musb_buf_mode mode;
u16 maxpacket;
};
#define MUSB_EP_FIFO(ep, st, m, pkt) \
{ \
.hw_ep_num = ep, \
.style = st, \
.mode = m, \
.maxpacket = pkt, \
}
#define MUSB_EP_FIFO_SINGLE(ep, st, pkt) \
MUSB_EP_FIFO(ep, st, BUF_SINGLE, pkt)
#define MUSB_EP_FIFO_DOUBLE(ep, st, pkt) \
MUSB_EP_FIFO(ep, st, BUF_DOUBLE, pkt)
struct musb_hdrc_eps_bits {
const char name[16];
u8 bits;
};
struct musb_hdrc_config {
struct musb_fifo_cfg *fifo_cfg; /* board fifo configuration */
unsigned fifo_cfg_size; /* size of the fifo configuration */
/* MUSB configuration-specific details */
unsigned multipoint:1; /* multipoint device */
unsigned dyn_fifo:1 __deprecated; /* supports dynamic fifo sizing */
/* need to explicitly de-assert the port reset after resume? */
unsigned host_port_deassert_reset_at_resume:1;
u8 num_eps; /* number of endpoints _with_ ep0 */
u8 ram_bits; /* ram address size */
u32 maximum_speed;
};
struct musb_hdrc_platform_data {
/* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */
u8 mode;
/* for clk_get() */
const char *clock;
/* (HOST or OTG) switch VBUS on/off */
int (*set_vbus)(struct device *dev, int is_on);
/* (HOST or OTG) mA/2 power supplied on (default = 8mA) */
u8 power;
/* (PERIPHERAL) mA/2 max power consumed (default = 100mA) */
u8 min_power;
/* (HOST or OTG) msec/2 after VBUS on till power good */
u8 potpgt;
/* (HOST or OTG) program PHY for external Vbus */
unsigned extvbus:1;
/* MUSB configuration-specific details */
const struct musb_hdrc_config *config;
/* Architecture specific board data */
void *board_data;
/* Platform specific struct musb_ops pointer */
const void *platform_ops;
};
enum musb_vbus_id_status {
MUSB_UNKNOWN = 0,
MUSB_ID_GROUND,
MUSB_ID_FLOAT,
MUSB_VBUS_VALID,
MUSB_VBUS_OFF,
};
#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
int musb_mailbox(enum musb_vbus_id_status status);
#else
static inline int musb_mailbox(enum musb_vbus_id_status status)
{
return 0;
}
#endif
/* TUSB 6010 support */
#define TUSB6010_OSCCLK_60 16667 /* psec/clk @ 60.0 MHz */
#define TUSB6010_REFCLK_24 41667 /* psec/clk @ 24.0 MHz XI */
#define TUSB6010_REFCLK_19 52083 /* psec/clk @ 19.2 MHz CLKIN */
#endif /* __LINUX_USB_MUSB_H */
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