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Commit 3fc154b6 authored by Arnaud Patard's avatar Arnaud Patard Committed by Greg Kroah-Hartman
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USB Gadget driver for Samsung s3c2410 ARM SoC 



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: default avatarArnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Cc: Herbert Pötzl <herbert@13thfloor.at>
Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 7a4eb7fd

drivers/usb/gadget/Kconfig

+21 −0
Original line number Diff line number Diff line
@@ -208,6 +208,27 @@ config USB_OTG 


	   Select this only if your OMAP board has a Mini-AB connector.



config USB_GADGET_S3C2410

	boolean "S3C2410 USB Device Controller"

	depends on ARCH_S3C2410

	help

	  Samsung's S3C2410 is an ARM-4 processor with an integrated

	  full speed USB 1.1 device controller.  It has 4 configurable

	  endpoints, as well as endpoint zero (for control transfers).



	  This driver has been tested on the S3C2410, S3C2412, and

	  S3C2440 processors.



config USB_S3C2410

	tristate

	depends on USB_GADGET_S3C2410

	default USB_GADGET

	select USB_GADGET_SELECTED



config USB_S3C2410_DEBUG

	boolean "S3C2410 udc debug messages"

	depends on USB_GADGET_S3C2410



config USB_GADGET_AT91

	boolean "AT91 USB Device Port"

	depends on ARCH_AT91 && !ARCH_AT91SAM9RL

drivers/usb/gadget/Makefile

+1 −0
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@@ -7,6 +7,7 @@ obj-$(CONFIG_USB_PXA2XX) += pxa2xx_udc.o 
obj-$(CONFIG_USB_GOKU)		+= goku_udc.o

obj-$(CONFIG_USB_OMAP)		+= omap_udc.o

obj-$(CONFIG_USB_LH7A40X)	+= lh7a40x_udc.o

obj-$(CONFIG_USB_S3C2410)	+= s3c2410_udc.o

obj-$(CONFIG_USB_AT91)		+= at91_udc.o

obj-$(CONFIG_USB_FSL_USB2)	+= fsl_usb2_udc.o

obj-$(CONFIG_USB_M66592)	+= m66592-udc.o

drivers/usb/gadget/s3c2410_udc.c

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+2078 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/usb/gadget/s3c2410_udc.h

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/*

 * linux/drivers/usb/gadget/s3c2410_udc.h

 * Samsung on-chip full speed USB device controllers

 *

 * Copyright (C) 2004-2007 Herbert Ptzl - 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