diff options
Diffstat (limited to 'drivers/usb/gadget/pxa25x_udc.h')
-rw-r--r-- | drivers/usb/gadget/pxa25x_udc.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/drivers/usb/gadget/pxa25x_udc.h b/drivers/usb/gadget/pxa25x_udc.h new file mode 100644 index 0000000..de28a69 --- /dev/null +++ b/drivers/usb/gadget/pxa25x_udc.h @@ -0,0 +1,162 @@ +/* + * Intel PXA25x on-chip full speed USB device controller + * + * Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix + * Copyright (C) 2003 David Brownell + * Copyright (C) 2012 Lukasz Dalek <luk0104@gmail.com> + * + * 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 __LINUX_USB_GADGET_PXA25X_H +#define __LINUX_USB_GADGET_PXA25X_H + +#include <linux/types.h> +#include <asm/arch/regs-usb.h> + +/* + * Prefetching support - only ARMv5. + */ + +#ifdef ARCH_HAS_PREFETCH +static inline void prefetch(const void *ptr) +{ + __asm__ __volatile__( + "pld\t%a0" + : + : "p" (ptr) + : "cc"); +} + +#define prefetchw(ptr) prefetch(ptr) +#endif /* ARCH_HAS_PREFETCH */ + +/*-------------------------------------------------------------------------*/ + +#define UDC_REGS ((struct pxa25x_udc_regs *)PXA25X_UDC_BASE) + +/*-------------------------------------------------------------------------*/ + +struct pxa2xx_udc_mach_info { + int (*udc_is_connected)(void); /* do we see host? */ + void (*udc_command)(int cmd); +#define PXA2XX_UDC_CMD_CONNECT 0 /* let host see us */ +#define PXA2XX_UDC_CMD_DISCONNECT 1 /* so host won't see us */ +}; + +struct pxa25x_udc; + +struct pxa25x_ep { + struct usb_ep ep; + struct pxa25x_udc *dev; + + const struct usb_endpoint_descriptor *desc; + struct list_head queue; + unsigned long pio_irqs; + + unsigned short fifo_size; + u8 bEndpointAddress; + u8 bmAttributes; + + unsigned stopped:1; + + /* UDCCS = UDC Control/Status for this EP + * UBCR = UDC Byte Count Remaining (contents of OUT fifo) + * UDDR = UDC Endpoint Data Register (the fifo) + * DRCM = DMA Request Channel Map + */ + u32 *reg_udccs; + u32 *reg_ubcr; + u32 *reg_uddr; +}; + +struct pxa25x_request { + struct usb_request req; + struct list_head queue; +}; + +enum ep0_state { + EP0_IDLE, + EP0_IN_DATA_PHASE, + EP0_OUT_DATA_PHASE, + EP0_END_XFER, + EP0_STALL, +}; + +#define EP0_FIFO_SIZE 16U +#define BULK_FIFO_SIZE 64U +#define ISO_FIFO_SIZE 256U +#define INT_FIFO_SIZE 8U + +struct udc_stats { + struct ep0stats { + unsigned long ops; + unsigned long bytes; + } read, write; + unsigned long irqs; +}; + +#ifdef CONFIG_USB_PXA25X_SMALL +/* when memory's tight, SMALL config saves code+data. */ +#define PXA_UDC_NUM_ENDPOINTS 3 +#endif + +#ifndef PXA_UDC_NUM_ENDPOINTS +#define PXA_UDC_NUM_ENDPOINTS 16 +#endif + +struct pxa25x_watchdog { + unsigned running:1; + ulong period; + ulong base; + struct pxa25x_udc *udc; + + void (*function)(struct pxa25x_udc *udc); +}; + +struct pxa25x_udc { + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + struct pxa25x_udc_regs *regs; + + enum ep0_state ep0state; + struct udc_stats stats; + unsigned got_irq:1, + pullup:1, + has_cfr:1, + req_pending:1, + req_std:1, + req_config:1, + active:1; + + struct clk *clk; + struct pxa2xx_udc_mach_info *mach; + u64 dma_mask; + struct pxa25x_ep ep[PXA_UDC_NUM_ENDPOINTS]; + + struct pxa25x_watchdog watchdog; +}; + +/*-------------------------------------------------------------------------*/ + +static struct pxa25x_udc *the_controller; + +/*-------------------------------------------------------------------------*/ + +#ifndef DEBUG +# define NOISY 0 +#endif + +#endif /* __LINUX_USB_GADGET_PXA25X_H */ |