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179 lines
5.9 KiB
179 lines
5.9 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2004 by Thomas Rathbone, HP Labs |
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* Copyright (C) 2005 by Ivan Kokshaysky |
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* Copyright (C) 2006 by SAN People |
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*/ |
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#ifndef AT91_UDC_H |
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#define AT91_UDC_H |
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/* |
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* USB Device Port (UDP) registers. |
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* Based on AT91RM9200 datasheet revision E. |
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*/ |
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#define AT91_UDP_FRM_NUM 0x00 /* Frame Number Register */ |
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#define AT91_UDP_NUM (0x7ff << 0) /* Frame Number */ |
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#define AT91_UDP_FRM_ERR (1 << 16) /* Frame Error */ |
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#define AT91_UDP_FRM_OK (1 << 17) /* Frame OK */ |
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#define AT91_UDP_GLB_STAT 0x04 /* Global State Register */ |
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#define AT91_UDP_FADDEN (1 << 0) /* Function Address Enable */ |
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#define AT91_UDP_CONFG (1 << 1) /* Configured */ |
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#define AT91_UDP_ESR (1 << 2) /* Enable Send Resume */ |
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#define AT91_UDP_RSMINPR (1 << 3) /* Resume has been sent */ |
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#define AT91_UDP_RMWUPE (1 << 4) /* Remote Wake Up Enable */ |
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#define AT91_UDP_FADDR 0x08 /* Function Address Register */ |
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#define AT91_UDP_FADD (0x7f << 0) /* Function Address Value */ |
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#define AT91_UDP_FEN (1 << 8) /* Function Enable */ |
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#define AT91_UDP_IER 0x10 /* Interrupt Enable Register */ |
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#define AT91_UDP_IDR 0x14 /* Interrupt Disable Register */ |
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#define AT91_UDP_IMR 0x18 /* Interrupt Mask Register */ |
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#define AT91_UDP_ISR 0x1c /* Interrupt Status Register */ |
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#define AT91_UDP_EP(n) (1 << (n)) /* Endpoint Interrupt Status */ |
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#define AT91_UDP_RXSUSP (1 << 8) /* USB Suspend Interrupt Status */ |
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#define AT91_UDP_RXRSM (1 << 9) /* USB Resume Interrupt Status */ |
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#define AT91_UDP_EXTRSM (1 << 10) /* External Resume Interrupt Status [AT91RM9200 only] */ |
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#define AT91_UDP_SOFINT (1 << 11) /* Start of Frame Interrupt Status */ |
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#define AT91_UDP_ENDBUSRES (1 << 12) /* End of Bus Reset Interrupt Status */ |
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#define AT91_UDP_WAKEUP (1 << 13) /* USB Wakeup Interrupt Status [AT91RM9200 only] */ |
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#define AT91_UDP_ICR 0x20 /* Interrupt Clear Register */ |
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#define AT91_UDP_RST_EP 0x28 /* Reset Endpoint Register */ |
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#define AT91_UDP_CSR(n) (0x30+((n)*4)) /* Endpoint Control/Status Registers 0-7 */ |
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#define AT91_UDP_TXCOMP (1 << 0) /* Generates IN packet with data previously written in DPR */ |
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#define AT91_UDP_RX_DATA_BK0 (1 << 1) /* Receive Data Bank 0 */ |
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#define AT91_UDP_RXSETUP (1 << 2) /* Send STALL to the host */ |
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#define AT91_UDP_STALLSENT (1 << 3) /* Stall Sent / Isochronous error (Isochronous endpoints) */ |
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#define AT91_UDP_TXPKTRDY (1 << 4) /* Transmit Packet Ready */ |
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#define AT91_UDP_FORCESTALL (1 << 5) /* Force Stall */ |
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#define AT91_UDP_RX_DATA_BK1 (1 << 6) /* Receive Data Bank 1 */ |
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#define AT91_UDP_DIR (1 << 7) /* Transfer Direction */ |
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#define AT91_UDP_EPTYPE (7 << 8) /* Endpoint Type */ |
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#define AT91_UDP_EPTYPE_CTRL (0 << 8) |
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#define AT91_UDP_EPTYPE_ISO_OUT (1 << 8) |
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#define AT91_UDP_EPTYPE_BULK_OUT (2 << 8) |
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#define AT91_UDP_EPTYPE_INT_OUT (3 << 8) |
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#define AT91_UDP_EPTYPE_ISO_IN (5 << 8) |
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#define AT91_UDP_EPTYPE_BULK_IN (6 << 8) |
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#define AT91_UDP_EPTYPE_INT_IN (7 << 8) |
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#define AT91_UDP_DTGLE (1 << 11) /* Data Toggle */ |
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#define AT91_UDP_EPEDS (1 << 15) /* Endpoint Enable/Disable */ |
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#define AT91_UDP_RXBYTECNT (0x7ff << 16) /* Number of bytes in FIFO */ |
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#define AT91_UDP_FDR(n) (0x50+((n)*4)) /* Endpoint FIFO Data Registers 0-7 */ |
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#define AT91_UDP_TXVC 0x74 /* Transceiver Control Register */ |
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#define AT91_UDP_TXVC_TXVDIS (1 << 8) /* Transceiver Disable */ |
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#define AT91_UDP_TXVC_PUON (1 << 9) /* PullUp On [AT91SAM9260 only] */ |
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/*-------------------------------------------------------------------------*/ |
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/* |
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* controller driver data structures |
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*/ |
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#define NUM_ENDPOINTS 6 |
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/* |
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* hardware won't disable bus reset, or resume while the controller |
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* is suspended ... watching suspend helps keep the logic symmetric. |
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*/ |
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#define MINIMUS_INTERRUPTUS \ |
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(AT91_UDP_ENDBUSRES | AT91_UDP_RXRSM | AT91_UDP_RXSUSP) |
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struct at91_ep { |
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struct usb_ep ep; |
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struct list_head queue; |
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struct at91_udc *udc; |
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void __iomem *creg; |
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unsigned maxpacket:16; |
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u8 int_mask; |
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unsigned is_pingpong:1; |
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unsigned stopped:1; |
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unsigned is_in:1; |
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unsigned is_iso:1; |
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unsigned fifo_bank:1; |
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}; |
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struct at91_udc_caps { |
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int (*init)(struct at91_udc *udc); |
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void (*pullup)(struct at91_udc *udc, int is_on); |
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}; |
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struct at91_udc_data { |
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int vbus_pin; /* high == host powering us */ |
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u8 vbus_active_low; /* vbus polarity */ |
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u8 vbus_polled; /* Use polling, not interrupt */ |
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int pullup_pin; /* active == D+ pulled up */ |
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u8 pullup_active_low; /* true == pullup_pin is active low */ |
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}; |
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/* |
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* driver is non-SMP, and just blocks IRQs whenever it needs |
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* access protection for chip registers or driver state |
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*/ |
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struct at91_udc { |
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struct usb_gadget gadget; |
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struct at91_ep ep[NUM_ENDPOINTS]; |
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struct usb_gadget_driver *driver; |
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const struct at91_udc_caps *caps; |
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unsigned vbus:1; |
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unsigned enabled:1; |
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unsigned clocked:1; |
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unsigned suspended:1; |
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unsigned req_pending:1; |
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unsigned wait_for_addr_ack:1; |
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unsigned wait_for_config_ack:1; |
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unsigned active_suspend:1; |
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u8 addr; |
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struct at91_udc_data board; |
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struct clk *iclk, *fclk; |
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struct platform_device *pdev; |
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struct proc_dir_entry *pde; |
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void __iomem *udp_baseaddr; |
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int udp_irq; |
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spinlock_t lock; |
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struct timer_list vbus_timer; |
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struct work_struct vbus_timer_work; |
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struct regmap *matrix; |
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}; |
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static inline struct at91_udc *to_udc(struct usb_gadget *g) |
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{ |
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return container_of(g, struct at91_udc, gadget); |
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} |
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struct at91_request { |
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struct usb_request req; |
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struct list_head queue; |
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}; |
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/*-------------------------------------------------------------------------*/ |
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#ifdef VERBOSE_DEBUG |
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# define VDBG DBG |
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#else |
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# define VDBG(stuff...) do{}while(0) |
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#endif |
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#ifdef PACKET_TRACE |
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# define PACKET VDBG |
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#else |
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# define PACKET(stuff...) do{}while(0) |
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#endif |
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#define ERR(stuff...) pr_err("udc: " stuff) |
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#define WARNING(stuff...) pr_warn("udc: " stuff) |
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#define INFO(stuff...) pr_info("udc: " stuff) |
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#define DBG(stuff...) pr_debug("udc: " stuff) |
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#endif |
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