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USB Gadget driver for Samsung s3c2410 ARM SoC

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This patch adds the support for the Usb Device Controller on Samsung
S3C24xx SoCs.  This driver passes all tests from testusb (including #13)
and has been tested on S3C2410, S3C24212, and S3C2440 SoCs.

Whitespace updates, minor cleanups by David

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Cc: Herbert Pötzl <herbert@13thfloor.at>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Arnaud Patard
2007-06-06 21:05:49 -07:00
committed by Greg Kroah-Hartman
parent 7a4eb7fd50
commit 3fc154b6b8
4 changed files with 2210 additions and 0 deletions
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110
drivers/usb/gadget/s3c2410_udc.h Normal file
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/*
* linux/drivers/usb/gadget/s3c2410_udc.h
* Samsung on-chip full speed USB device controllers
*
* Copyright (C) 2004-2007 Herbert Pötzl - Arnaud Patard
* Additional cleanups by Ben Dooks <ben-linux@fluff.org>
*
* 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 _S3C2410_UDC_H
#define _S3C2410_UDC_H
struct s3c2410_ep {
struct list_head queue;
unsigned long last_io; /* jiffies timestamp */
struct usb_gadget *gadget;
struct s3c2410_udc *dev;
const struct usb_endpoint_descriptor *desc;
struct usb_ep ep;
u8 num;
unsigned short fifo_size;
u8 bEndpointAddress;
u8 bmAttributes;
unsigned halted : 1;
unsigned already_seen : 1;
unsigned setup_stage : 1;
};
/* Warning : ep0 has a fifo of 16 bytes */
/* Don't try to set 32 or 64 */
/* also testusb 14 fails wit 16 but is */
/* fine with 8 */
#define EP0_FIFO_SIZE 8
#define EP_FIFO_SIZE 64
#define DEFAULT_POWER_STATE 0x00
#define S3C2440_EP_FIFO_SIZE 128
static const char ep0name [] = "ep0";
static const char *const ep_name[] = {
ep0name, /* everyone has ep0 */
/* s3c2410 four bidirectional bulk endpoints */
"ep1-bulk", "ep2-bulk", "ep3-bulk", "ep4-bulk",
};
#define S3C2410_ENDPOINTS ARRAY_SIZE(ep_name)
struct s3c2410_request {
struct list_head queue; /* ep's requests */
struct usb_request req;
};
enum ep0_state {
EP0_IDLE,
EP0_IN_DATA_PHASE,
EP0_OUT_DATA_PHASE,
EP0_END_XFER,
EP0_STALL,
};
static const char *ep0states[]= {
"EP0_IDLE",
"EP0_IN_DATA_PHASE",
"EP0_OUT_DATA_PHASE",
"EP0_END_XFER",
"EP0_STALL",
};
struct s3c2410_udc {
spinlock_t lock;
struct s3c2410_ep ep[S3C2410_ENDPOINTS];
int address;
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
struct s3c2410_request fifo_req;
u8 fifo_buf[EP_FIFO_SIZE];
u16 devstatus;
u32 port_status;
int ep0state;
unsigned got_irq : 1;
unsigned req_std : 1;
unsigned req_config : 1;
unsigned req_pending : 1;
u8 vbus;
struct dentry *regs_info;
};
#endif