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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: 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
Greg Kroah-Hartman
parent
7a4eb7fd50
commit
3fc154b6b8
@ -208,6 +208,27 @@ config USB_OTG
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Select this only if your OMAP board has a Mini-AB connector.
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config USB_GADGET_S3C2410
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boolean "S3C2410 USB Device Controller"
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depends on ARCH_S3C2410
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help
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Samsung's S3C2410 is an ARM-4 processor with an integrated
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full speed USB 1.1 device controller. It has 4 configurable
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endpoints, as well as endpoint zero (for control transfers).
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This driver has been tested on the S3C2410, S3C2412, and
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S3C2440 processors.
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config USB_S3C2410
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tristate
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depends on USB_GADGET_S3C2410
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default USB_GADGET
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select USB_GADGET_SELECTED
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config USB_S3C2410_DEBUG
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boolean "S3C2410 udc debug messages"
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depends on USB_GADGET_S3C2410
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config USB_GADGET_AT91
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boolean "AT91 USB Device Port"
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depends on ARCH_AT91 && !ARCH_AT91SAM9RL
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@ -7,6 +7,7 @@ obj-$(CONFIG_USB_PXA2XX) += pxa2xx_udc.o
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obj-$(CONFIG_USB_GOKU) += goku_udc.o
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obj-$(CONFIG_USB_OMAP) += omap_udc.o
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obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o
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obj-$(CONFIG_USB_S3C2410) += s3c2410_udc.o
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obj-$(CONFIG_USB_AT91) += at91_udc.o
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obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o
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obj-$(CONFIG_USB_M66592) += m66592-udc.o
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2078
drivers/usb/gadget/s3c2410_udc.c
Normal file
2078
drivers/usb/gadget/s3c2410_udc.c
Normal file
File diff suppressed because it is too large
Load Diff
110
drivers/usb/gadget/s3c2410_udc.h
Normal file
110
drivers/usb/gadget/s3c2410_udc.h
Normal file
@ -0,0 +1,110 @@
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/*
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* linux/drivers/usb/gadget/s3c2410_udc.h
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* Samsung on-chip full speed USB device controllers
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*
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* Copyright (C) 2004-2007 Herbert Pötzl - Arnaud Patard
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* Additional cleanups by Ben Dooks <ben-linux@fluff.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef _S3C2410_UDC_H
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#define _S3C2410_UDC_H
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struct s3c2410_ep {
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struct list_head queue;
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unsigned long last_io; /* jiffies timestamp */
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struct usb_gadget *gadget;
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struct s3c2410_udc *dev;
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const struct usb_endpoint_descriptor *desc;
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struct usb_ep ep;
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u8 num;
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unsigned short fifo_size;
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u8 bEndpointAddress;
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u8 bmAttributes;
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unsigned halted : 1;
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unsigned already_seen : 1;
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unsigned setup_stage : 1;
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};
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/* Warning : ep0 has a fifo of 16 bytes */
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/* Don't try to set 32 or 64 */
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/* also testusb 14 fails wit 16 but is */
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/* fine with 8 */
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#define EP0_FIFO_SIZE 8
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#define EP_FIFO_SIZE 64
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#define DEFAULT_POWER_STATE 0x00
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#define S3C2440_EP_FIFO_SIZE 128
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static const char ep0name [] = "ep0";
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static const char *const ep_name[] = {
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ep0name, /* everyone has ep0 */
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/* s3c2410 four bidirectional bulk endpoints */
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"ep1-bulk", "ep2-bulk", "ep3-bulk", "ep4-bulk",
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};
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#define S3C2410_ENDPOINTS ARRAY_SIZE(ep_name)
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struct s3c2410_request {
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struct list_head queue; /* ep's requests */
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struct usb_request req;
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};
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enum ep0_state {
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EP0_IDLE,
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EP0_IN_DATA_PHASE,
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EP0_OUT_DATA_PHASE,
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EP0_END_XFER,
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EP0_STALL,
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};
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static const char *ep0states[]= {
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"EP0_IDLE",
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"EP0_IN_DATA_PHASE",
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"EP0_OUT_DATA_PHASE",
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"EP0_END_XFER",
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"EP0_STALL",
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};
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struct s3c2410_udc {
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spinlock_t lock;
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struct s3c2410_ep ep[S3C2410_ENDPOINTS];
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int address;
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struct usb_gadget gadget;
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struct usb_gadget_driver *driver;
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struct s3c2410_request fifo_req;
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u8 fifo_buf[EP_FIFO_SIZE];
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u16 devstatus;
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u32 port_status;
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int ep0state;
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unsigned got_irq : 1;
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unsigned req_std : 1;
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unsigned req_config : 1;
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unsigned req_pending : 1;
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u8 vbus;
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struct dentry *regs_info;
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};
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#endif
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