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Commit aa69a809 authored Nov 17, 2008 by David Lopo Committed by Greg Kroah-Hartman Jan 07, 2009

USB: gadget: MIPS ci13xxx_udc



MIPS USB IP core family device controller
Currently it only supports IP part number CI13412.

[dbrownell@users.sourceforge.net: minor comment tweaks]

Signed-off-by: David Lopo <dlopo@chipidea.mips.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent bb9496c6

drivers/usb/gadget/Kconfig

+18 −0

Original line number	Diff line number	Diff line
		@@ -377,6 +377,24 @@ config USB_FSL_QE
		default USB_GADGET
		select USB_GADGET_SELECTED

		config USB_GADGET_CI13XXX
		boolean "MIPS USB CI13xxx"
		depends on PCI
		select USB_GADGET_DUALSPEED
		help
		MIPS USB IP core family device controller
		Currently it only supports IP part number CI13412

		Say "y" to link the driver statically, or "m" to build a
		dynamically linked module called "ci13xxx_udc" and force all
		gadget drivers to also be dynamically linked.

		config USB_CI13XXX
		tristate
		depends on USB_GADGET_CI13XXX
		default USB_GADGET
		select USB_GADGET_SELECTED

		config USB_GADGET_NET2280
		boolean "NetChip 228x"
		depends on PCI

drivers/usb/gadget/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@ obj-$(CONFIG_USB_ATMEL_USBA) += atmel_usba_udc.o
		obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o
		obj-$(CONFIG_USB_M66592) += m66592-udc.o
		obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o
		obj-$(CONFIG_USB_CI13XXX) += ci13xxx_udc.o

		#
		# USB gadget drivers

drivers/usb/gadget/ci13xxx_udc.c

0 → 100644

+2830 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/usb/gadget/ci13xxx_udc.h

0 → 100644

+195 −0

Original line number	Diff line number	Diff line
		/*
		* ci13xxx_udc.h - structures, registers, and macros MIPS USB IP core
		*
		* Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
		*
		* Author: David Lopo
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 as
		* published by the Free Software Foundation.
		*
		* Description: MIPS USB IP core family device controller
		* Structures, registers and logging macros
		*/

		#ifndef _CI13XXX_h_
		#define _CI13XXX_h_

		/******************************************************************************
		* DEFINE
		*****************************************************************************/
		#define ENDPT_MAX (16)
		#define CTRL_PAYLOAD_MAX (64)
		#define RX (0) /* similar to USB_DIR_OUT but can be used as an index */
		#define TX (1) /* similar to USB_DIR_IN but can be used as an index */

		/******************************************************************************
		* STRUCTURES
		*****************************************************************************/
		/* DMA layout of transfer descriptors */
		struct ci13xxx_td {
		/* 0 */
		u32 next;
		#define TD_TERMINATE BIT(0)
		/* 1 */
		u32 token;
		#define TD_STATUS (0x00FFUL << 0)
		#define TD_STATUS_TR_ERR BIT(3)
		#define TD_STATUS_DT_ERR BIT(5)
		#define TD_STATUS_HALTED BIT(6)
		#define TD_STATUS_ACTIVE BIT(7)
		#define TD_MULTO (0x0003UL << 10)
		#define TD_IOC BIT(15)
		#define TD_TOTAL_BYTES (0x7FFFUL << 16)
		/* 2 */
		u32 page[5];
		#define TD_CURR_OFFSET (0x0FFFUL << 0)
		#define TD_FRAME_NUM (0x07FFUL << 0)
		#define TD_RESERVED_MASK (0x0FFFUL << 0)
		} __attribute__ ((packed));

		/* DMA layout of queue heads */
		struct ci13xxx_qh {
		/* 0 */
		u32 cap;
		#define QH_IOS BIT(15)
		#define QH_MAX_PKT (0x07FFUL << 16)
		#define QH_ZLT BIT(29)
		#define QH_MULT (0x0003UL << 30)
		/* 1 */
		u32 curr;
		/* 2 - 8 */
		struct ci13xxx_td td;
		/* 9 */
		u32 RESERVED;
		struct usb_ctrlrequest setup;
		} __attribute__ ((packed));

		/* Extension of usb_request */
		struct ci13xxx_req {
		struct usb_request req;
		unsigned map;
		struct list_head queue;
		struct ci13xxx_td *ptr;
		dma_addr_t dma;
		};

		/* Extension of usb_ep */
		struct ci13xxx_ep {
		struct usb_ep ep;
		const struct usb_endpoint_descriptor *desc;
		u8 dir;
		u8 num;
		u8 type;
		char name[16];
		struct {
		struct list_head queue;
		struct ci13xxx_qh *ptr;
		dma_addr_t dma;
		} qh[2];
		struct usb_request *status;
		int wedge;

		/* global resources */
		spinlock_t *lock;
		struct device *device;
		struct dma_pool *td_pool;
		};

		/* CI13XXX UDC descriptor & global resources */
		struct ci13xxx {
		spinlock_t lock; / ctrl register bank access */

		struct dma_pool qh_pool; / DMA pool for queue heads */
		struct dma_pool td_pool; / DMA pool for transfer descs */

		struct usb_gadget gadget; /* USB slave device */
		struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX]; /* extended endpts */

		struct usb_gadget_driver driver; / 3rd party gadget driver */
		};

		/******************************************************************************
		* REGISTERS
		*****************************************************************************/
		/* register size */
		#define REG_BITS (32)

		/* HCCPARAMS */
		#define HCCPARAMS_LEN BIT(17)

		/* DCCPARAMS */
		#define DCCPARAMS_DEN (0x1F << 0)
		#define DCCPARAMS_DC BIT(7)

		/* TESTMODE */
		#define TESTMODE_FORCE BIT(0)

		/* USBCMD */
		#define USBCMD_RS BIT(0)
		#define USBCMD_RST BIT(1)
		#define USBCMD_SUTW BIT(13)

		/* USBSTS & USBINTR */
		#define USBi_UI BIT(0)
		#define USBi_UEI BIT(1)
		#define USBi_PCI BIT(2)
		#define USBi_URI BIT(6)
		#define USBi_SLI BIT(8)

		/* DEVICEADDR */
		#define DEVICEADDR_USBADRA BIT(24)
		#define DEVICEADDR_USBADR (0x7FUL << 25)

		/* PORTSC */
		#define PORTSC_SUSP BIT(7)
		#define PORTSC_HSP BIT(9)
		#define PORTSC_PTC (0x0FUL << 16)

		/* DEVLC */
		#define DEVLC_PSPD (0x03UL << 25)
		#define DEVLC_PSPD_HS (0x02UL << 25)

		/* USBMODE */
		#define USBMODE_CM (0x03UL << 0)
		#define USBMODE_CM_IDLE (0x00UL << 0)
		#define USBMODE_CM_DEVICE (0x02UL << 0)
		#define USBMODE_CM_HOST (0x03UL << 0)
		#define USBMODE_SLOM BIT(3)

		/* ENDPTCTRL */
		#define ENDPTCTRL_RXS BIT(0)
		#define ENDPTCTRL_RXT (0x03UL << 2)
		#define ENDPTCTRL_RXR BIT(6) /* reserved for port 0 */
		#define ENDPTCTRL_RXE BIT(7)
		#define ENDPTCTRL_TXS BIT(16)
		#define ENDPTCTRL_TXT (0x03UL << 18)
		#define ENDPTCTRL_TXR BIT(22) /* reserved for port 0 */
		#define ENDPTCTRL_TXE BIT(23)

		/******************************************************************************
		* LOGGING
		*****************************************************************************/
		#define ci13xxx_printk(level, format, args...) \
		do { \
		if (_udc == NULL) \
		printk(level "[%s] " format "\n", __func__, ## args); \
		else \
		dev_printk(level, _udc->gadget.dev.parent, \
		"[%s] " format "\n", __func__, ## args); \
		} while (0)

		#define err(format, args...) ci13xxx_printk(KERN_ERR, format, ## args)
		#define warn(format, args...) ci13xxx_printk(KERN_WARNING, format, ## args)
		#define info(format, args...) ci13xxx_printk(KERN_INFO, format, ## args)

		#ifdef TRACE
		#define trace(format, args...) ci13xxx_printk(KERN_DEBUG, format, ## args)
		#define dbg_trace(format, args...) dev_dbg(dev, format, ##args)
		#else
		#define trace(format, args...) do {} while (0)
		#define dbg_trace(format, args...) do {} while (0)
		#endif

		#endif /* _CI13XXX_h_ */

drivers/usb/gadget/gadget_chips.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -158,6 +158,11 @@
		#define gadget_is_fsl_qe(g) 0
		#endif

		#ifdef CONFIG_USB_GADGET_CI13XXX
		#define gadget_is_ci13xxx(g) (!strcmp("ci13xxx_udc", (g)->name))
		#else
		#define gadget_is_ci13xxx(g) 0
		#endif

		// CONFIG_USB_GADGET_SX2
		// CONFIG_USB_GADGET_AU1X00
		@@ -225,6 +230,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
		return 0x21;
		else if (gadget_is_fsl_qe(gadget))
		return 0x22;
		else if (gadget_is_ci13xxx(gadget))
		return 0x23;
		return -ENOENT;
		}