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s3c_udc.h
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s3c_udc.h
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/*
* drivers/usb/gadget/s3c_udc.h
* Samsung S3C on-chip full/high speed USB device controllers
* Copyright (C) 2005 for Samsung Electronics
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __S3C_USB_GADGET
#define __S3C_USB_GADGET
#include <asm/errno.h>
#include <linux/sizes.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/list.h>
#include <usb/lin_gadget_compat.h>
#define PHY0_SLEEP (1 << 5)
/*-------------------------------------------------------------------------*/
/* DMA bounce buffer size, 16K is enough even for mass storage */
#define DMA_BUFFER_SIZE (16*SZ_1K)
#define EP0_FIFO_SIZE 64
#define EP_FIFO_SIZE 512
#define EP_FIFO_SIZE2 1024
/* ep0-control, ep1in-bulk, ep2out-bulk, ep3in-int */
#define S3C_MAX_ENDPOINTS 4
#define S3C_MAX_HW_ENDPOINTS 16
#define WAIT_FOR_SETUP 0
#define DATA_STATE_XMIT 1
#define DATA_STATE_NEED_ZLP 2
#define WAIT_FOR_OUT_STATUS 3
#define DATA_STATE_RECV 4
#define WAIT_FOR_COMPLETE 5
#define WAIT_FOR_OUT_COMPLETE 6
#define WAIT_FOR_IN_COMPLETE 7
#define WAIT_FOR_NULL_COMPLETE 8
#define TEST_J_SEL 0x1
#define TEST_K_SEL 0x2
#define TEST_SE0_NAK_SEL 0x3
#define TEST_PACKET_SEL 0x4
#define TEST_FORCE_ENABLE_SEL 0x5
/* ************************************************************************* */
/* IO
*/
enum ep_type {
ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
};
struct s3c_ep {
struct usb_ep ep;
struct s3c_udc *dev;
const struct usb_endpoint_descriptor *desc;
struct list_head queue;
unsigned long pio_irqs;
int len;
void *dma_buf;
u8 stopped;
u8 bEndpointAddress;
u8 bmAttributes;
enum ep_type ep_type;
int fifo_num;
};
struct s3c_request {
struct usb_request req;
struct list_head queue;
};
struct s3c_udc {
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
struct s3c_plat_otg_data *pdata;
int ep0state;
struct s3c_ep ep[S3C_MAX_ENDPOINTS];
unsigned char usb_address;
unsigned req_pending:1, req_std:1;
};
extern struct s3c_udc *the_controller;
#define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN) == USB_DIR_IN)
#define ep_index(EP) ((EP)->bEndpointAddress&0xF)
#define ep_maxpacket(EP) ((EP)->ep.maxpacket)
extern void otg_phy_init(struct s3c_udc *dev);
extern void otg_phy_off(struct s3c_udc *dev);
extern void s3c_udc_ep_set_stall(struct s3c_ep *ep);
extern int s3c_udc_probe(struct s3c_plat_otg_data *pdata);
struct s3c_plat_otg_data {
int (*phy_control)(int on);
unsigned int regs_phy;
unsigned int regs_otg;
unsigned int usb_phy_ctrl;
unsigned int usb_flags;
unsigned int usb_gusbcfg;
};
#endif