/* * Copyright (C) 2004 by Thomas Rathbone, HP Labs * Copyright (C) 2005 by Ivan Kokshaysky * Copyright (C) 2006 by SAN People * * 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 AT91_UDC_H #define AT91_UDC_H /* * USB Device Port (UDP) registers. * Based on AT91RM9200 datasheet revision E. */ #define AT91_UDP_FRM_NUM 0x00 /* Frame Number Register */ #define AT91_UDP_NUM (0x7ff << 0) /* Frame Number */ #define AT91_UDP_FRM_ERR (1 << 16) /* Frame Error */ #define AT91_UDP_FRM_OK (1 << 17) /* Frame OK */ #define AT91_UDP_GLB_STAT 0x04 /* Global State Register */ #define AT91_UDP_FADDEN (1 << 0) /* Function Address Enable */ #define AT91_UDP_CONFG (1 << 1) /* Configured */ #define AT91_UDP_ESR (1 << 2) /* Enable Send Resume */ #define AT91_UDP_RSMINPR (1 << 3) /* Resume has been sent */ #define AT91_UDP_RMWUPE (1 << 4) /* Remote Wake Up Enable */ #define AT91_UDP_FADDR 0x08 /* Function Address Register */ #define AT91_UDP_FADD (0x7f << 0) /* Function Address Value */ #define AT91_UDP_FEN (1 << 8) /* Function Enable */ #define AT91_UDP_IER 0x10 /* Interrupt Enable Register */ #define AT91_UDP_IDR 0x14 /* Interrupt Disable Register */ #define AT91_UDP_IMR 0x18 /* Interrupt Mask Register */ #define AT91_UDP_ISR 0x1c /* Interrupt Status Register */ #define AT91_UDP_EP(n) (1 << (n)) /* Endpoint Interrupt Status */ #define AT91_UDP_RXSUSP (1 << 8) /* USB Suspend Interrupt Status */ #define AT91_UDP_RXRSM (1 << 9) /* USB Resume Interrupt Status */ #define AT91_UDP_EXTRSM (1 << 10) /* External Resume Interrupt Status [AT91RM9200 only] */ #define AT91_UDP_SOFINT (1 << 11) /* Start of Frame Interrupt Status */ #define AT91_UDP_ENDBUSRES (1 << 12) /* End of Bus Reset Interrupt Status */ #define AT91_UDP_WAKEUP (1 << 13) /* USB Wakeup Interrupt Status [AT91RM9200 only] */ #define AT91_UDP_ICR 0x20 /* Interrupt Clear Register */ #define AT91_UDP_RST_EP 0x28 /* Reset Endpoint Register */ #define AT91_UDP_CSR(n) (0x30+((n)*4)) /* Endpoint Control/Status Registers 0-7 */ #define AT91_UDP_TXCOMP (1 << 0) /* Generates IN packet with data previously written in DPR */ #define AT91_UDP_RX_DATA_BK0 (1 << 1) /* Receive Data Bank 0 */ #define AT91_UDP_RXSETUP (1 << 2) /* Send STALL to the host */ #define AT91_UDP_STALLSENT (1 << 3) /* Stall Sent / Isochronous error (Isochronous endpoints) */ #define AT91_UDP_TXPKTRDY (1 << 4) /* Transmit Packet Ready */ #define AT91_UDP_FORCESTALL (1 << 5) /* Force Stall */ #define AT91_UDP_RX_DATA_BK1 (1 << 6) /* Receive Data Bank 1 */ #define AT91_UDP_DIR (1 << 7) /* Transfer Direction */ #define AT91_UDP_EPTYPE (7 << 8) /* Endpoint Type */ #define AT91_UDP_EPTYPE_CTRL (0 << 8) #define AT91_UDP_EPTYPE_ISO_OUT (1 << 8) #define AT91_UDP_EPTYPE_BULK_OUT (2 << 8) #define AT91_UDP_EPTYPE_INT_OUT (3 << 8) #define AT91_UDP_EPTYPE_ISO_IN (5 << 8) #define AT91_UDP_EPTYPE_BULK_IN (6 << 8) #define AT91_UDP_EPTYPE_INT_IN (7 << 8) #define AT91_UDP_DTGLE (1 << 11) /* Data Toggle */ #define AT91_UDP_EPEDS (1 << 15) /* Endpoint Enable/Disable */ #define AT91_UDP_RXBYTECNT (0x7ff << 16) /* Number of bytes in FIFO */ #define AT91_UDP_FDR(n) (0x50+((n)*4)) /* Endpoint FIFO Data Registers 0-7 */ #define AT91_UDP_TXVC 0x74 /* Transceiver Control Register */ #define AT91_UDP_TXVC_TXVDIS (1 << 8) /* Transceiver Disable */ #define AT91_UDP_TXVC_PUON (1 << 9) /* PullUp On [AT91SAM9260 only] */ /*-------------------------------------------------------------------------*/ /* * controller driver data structures */ #define NUM_ENDPOINTS 6 /* * hardware won't disable bus reset, or resume while the controller * is suspended ... watching suspend helps keep the logic symmetric. */ #define MINIMUS_INTERRUPTUS \ (AT91_UDP_ENDBUSRES | AT91_UDP_RXRSM | AT91_UDP_RXSUSP) struct at91_ep { struct usb_ep ep; struct list_head queue; struct at91_udc *udc; void __iomem *creg; unsigned maxpacket:16; u8 int_mask; unsigned is_pingpong:1; unsigned stopped:1; unsigned is_in:1; unsigned is_iso:1; unsigned fifo_bank:1; const struct usb_endpoint_descriptor *desc; }; /* * driver is non-SMP, and just blocks IRQs whenever it needs * access protection for chip registers or driver state */ struct at91_udc { struct usb_gadget gadget; struct at91_ep ep[NUM_ENDPOINTS]; struct usb_gadget_driver *driver; unsigned vbus:1; unsigned enabled:1; unsigned clocked:1; unsigned suspended:1; unsigned req_pending:1; unsigned wait_for_addr_ack:1; unsigned wait_for_config_ack:1; unsigned selfpowered:1; unsigned active_suspend:1; u8 addr; struct at91_udc_data board; struct clk *iclk, *fclk; struct platform_device *pdev; struct proc_dir_entry *pde; void __iomem *udp_baseaddr; int udp_irq; spinlock_t lock; struct timer_list vbus_timer; struct work_struct vbus_timer_work; }; static inline struct at91_udc *to_udc(struct usb_gadget *g) { return container_of(g, struct at91_udc, gadget); } struct at91_request { struct usb_request req; struct list_head queue; }; /*-------------------------------------------------------------------------*/ #ifdef VERBOSE_DEBUG # define VDBG DBG #else # define VDBG(stuff...) do{}while(0) #endif #ifdef PACKET_TRACE # define PACKET VDBG #else # define PACKET(stuff...) do{}while(0) #endif #define ERR(stuff...) pr_err("udc: " stuff) #define WARNING(stuff...) pr_warning("udc: " stuff) #define INFO(stuff...) pr_info("udc: " stuff) #define DBG(stuff...) pr_debug("udc: " stuff) #endif