mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 10:18:38 +00:00
3c09a2836d
Add to pxa25x based devices support for USB ethernet gadget. This is a port of pxa25x UDC driver from Linux kernel. Signed-off-by: Lukasz Dalek <luk0104@gmail.com>
162 lines
3.8 KiB
C
162 lines
3.8 KiB
C
/*
|
|
* Intel PXA25x on-chip full speed USB device controller
|
|
*
|
|
* Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
|
|
* Copyright (C) 2003 David Brownell
|
|
* Copyright (C) 2012 Lukasz Dalek <luk0104@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef __LINUX_USB_GADGET_PXA25X_H
|
|
#define __LINUX_USB_GADGET_PXA25X_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/arch/regs-usb.h>
|
|
|
|
/*
|
|
* Prefetching support - only ARMv5.
|
|
*/
|
|
|
|
#ifdef ARCH_HAS_PREFETCH
|
|
static inline void prefetch(const void *ptr)
|
|
{
|
|
__asm__ __volatile__(
|
|
"pld\t%a0"
|
|
:
|
|
: "p" (ptr)
|
|
: "cc");
|
|
}
|
|
|
|
#define prefetchw(ptr) prefetch(ptr)
|
|
#endif /* ARCH_HAS_PREFETCH */
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#define UDC_REGS ((struct pxa25x_udc_regs *)PXA25X_UDC_BASE)
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
struct pxa2xx_udc_mach_info {
|
|
int (*udc_is_connected)(void); /* do we see host? */
|
|
void (*udc_command)(int cmd);
|
|
#define PXA2XX_UDC_CMD_CONNECT 0 /* let host see us */
|
|
#define PXA2XX_UDC_CMD_DISCONNECT 1 /* so host won't see us */
|
|
};
|
|
|
|
struct pxa25x_udc;
|
|
|
|
struct pxa25x_ep {
|
|
struct usb_ep ep;
|
|
struct pxa25x_udc *dev;
|
|
|
|
const struct usb_endpoint_descriptor *desc;
|
|
struct list_head queue;
|
|
unsigned long pio_irqs;
|
|
|
|
unsigned short fifo_size;
|
|
u8 bEndpointAddress;
|
|
u8 bmAttributes;
|
|
|
|
unsigned stopped:1;
|
|
|
|
/* UDCCS = UDC Control/Status for this EP
|
|
* UBCR = UDC Byte Count Remaining (contents of OUT fifo)
|
|
* UDDR = UDC Endpoint Data Register (the fifo)
|
|
* DRCM = DMA Request Channel Map
|
|
*/
|
|
u32 *reg_udccs;
|
|
u32 *reg_ubcr;
|
|
u32 *reg_uddr;
|
|
};
|
|
|
|
struct pxa25x_request {
|
|
struct usb_request req;
|
|
struct list_head queue;
|
|
};
|
|
|
|
enum ep0_state {
|
|
EP0_IDLE,
|
|
EP0_IN_DATA_PHASE,
|
|
EP0_OUT_DATA_PHASE,
|
|
EP0_END_XFER,
|
|
EP0_STALL,
|
|
};
|
|
|
|
#define EP0_FIFO_SIZE 16U
|
|
#define BULK_FIFO_SIZE 64U
|
|
#define ISO_FIFO_SIZE 256U
|
|
#define INT_FIFO_SIZE 8U
|
|
|
|
struct udc_stats {
|
|
struct ep0stats {
|
|
unsigned long ops;
|
|
unsigned long bytes;
|
|
} read, write;
|
|
unsigned long irqs;
|
|
};
|
|
|
|
#ifdef CONFIG_USB_PXA25X_SMALL
|
|
/* when memory's tight, SMALL config saves code+data. */
|
|
#define PXA_UDC_NUM_ENDPOINTS 3
|
|
#endif
|
|
|
|
#ifndef PXA_UDC_NUM_ENDPOINTS
|
|
#define PXA_UDC_NUM_ENDPOINTS 16
|
|
#endif
|
|
|
|
struct pxa25x_watchdog {
|
|
unsigned running:1;
|
|
ulong period;
|
|
ulong base;
|
|
struct pxa25x_udc *udc;
|
|
|
|
void (*function)(struct pxa25x_udc *udc);
|
|
};
|
|
|
|
struct pxa25x_udc {
|
|
struct usb_gadget gadget;
|
|
struct usb_gadget_driver *driver;
|
|
struct pxa25x_udc_regs *regs;
|
|
|
|
enum ep0_state ep0state;
|
|
struct udc_stats stats;
|
|
unsigned got_irq:1,
|
|
pullup:1,
|
|
has_cfr:1,
|
|
req_pending:1,
|
|
req_std:1,
|
|
req_config:1,
|
|
active:1;
|
|
|
|
struct clk *clk;
|
|
struct pxa2xx_udc_mach_info *mach;
|
|
u64 dma_mask;
|
|
struct pxa25x_ep ep[PXA_UDC_NUM_ENDPOINTS];
|
|
|
|
struct pxa25x_watchdog watchdog;
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static struct pxa25x_udc *the_controller;
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#ifndef DEBUG
|
|
# define NOISY 0
|
|
#endif
|
|
|
|
#endif /* __LINUX_USB_GADGET_PXA25X_H */
|