--- /dev/null
+/*
+ * 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 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;
+ struct regmap *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...) 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
+
Code Review / kvmfornfv.git / blobdiff