mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-15 06:33:45 +09:00
![Heiko Schocher](/assets/img/avatar_default.png)
add U-Boot specific changes to the at91_udc linux driver, so it works with U-Boot. Signed-off-by: Heiko Schocher <hs@denx.de>
172 lines
5.7 KiB
C
172 lines
5.7 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
#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;
|
|
};
|
|
|
|
struct at91_udc_caps {
|
|
int (*init)(struct at91_udc *udc);
|
|
void (*pullup)(struct at91_udc *udc, int is_on);
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
const struct at91_udc_caps *caps;
|
|
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;
|
|
void __iomem *udp_baseaddr;
|
|
int udp_irq;
|
|
spinlock_t lock;
|
|
struct at91_matrix *matrix;
|
|
};
|
|
|
|
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...) debug("udc: " stuff)
|
|
#define WARNING(stuff...) debug("udc: " stuff)
|
|
#define INFO(stuff...) debug("udc: " stuff)
|
|
#define DBG(stuff...) debug("udc: " stuff)
|
|
|
|
#endif
|
|
|