diff options
Diffstat (limited to 'drivers/usb/gadget/aspeed_udc.h')
| -rw-r--r-- | drivers/usb/gadget/aspeed_udc.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/usb/gadget/aspeed_udc.h b/drivers/usb/gadget/aspeed_udc.h new file mode 100644 index 000000000000..5494afd93fa6 --- /dev/null +++ b/drivers/usb/gadget/aspeed_udc.h @@ -0,0 +1,161 @@ +/* + * Copyright 2014-present Facebook. All Rights Reserved. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __LINUX_USB_GADGET_ASPEED_UDC_H +#define __LINUX_USB_GADGET_ASPEED_UDC_H + +#define AST_INT_EP_POOL_NAK (1 << 17) +#define AST_INT_EP_POOL_ACK (1 << 16) +#define AST_INT_DEV5_CONTROLLER (1 << 13) +#define AST_INT_DEV4_CONTROLLER (1 << 12) +#define AST_INT_DEV3_CONTROLLER (1 << 11) +#define AST_INT_DEV2_CONTROLLER (1 << 10) +#define AST_INT_DEV1_CONTROLLER (1 << 9) + +/* Interrupt control bits */ +#define AST_INT_EP1_IN_ACK (1 << 5) +#define AST_INT_EP0_IN_NAK (1 << 4) +#define AST_INT_EP0_IN_ACK (1 << 3) +#define AST_INT_EP0_OUT_NAK (1 << 2) +#define AST_INT_EP0_OUT_ACK (1 << 1) +#define AST_INT_EP0_SETUP_ACK (1 << 0) + +/* Interrupt status bits */ +#define AST_IRQ_EP_POOL_NAK (1 << 17) +#define AST_IRQ_EP_POOL_ACK (1 << 16) +#define AST_IRQ_EP0_SETUP (1 << 0) +#define AST_IRQ_EP0_OUT_ACK (1 << 1) +#define AST_IRQ_EP0_OUT_NAK (1 << 2) +#define AST_IRQ_EP0_IN_ACK (1 << 3) +#define AST_IRQ_EP0_IN_NAK (1 << 4) +#define AST_IRQ_EP1_IN_ACK (1 << 5) + +#define AST_HUB_RESET_DISABLE (1 << 11) + +#define AST_HUB_BASE_ADDR 0x1e6a0000 +#define AST_HUB_STATUS 0x00 +#define AST_HUB_ISR 0x0c +#define AST_HUB_EP_ACK_ISR 0x18 +#define AST_HUB_EP_NAK_ISR 0x1C +#define AST_HUB_SOFTRESET_ENABLE 0x20 +#define AST_HUB_INTERRUPT_ENABLE 0x08 +#define AST_HUB_EP0_STATUS 0x30 +#define AST_HUB_EP1_STATUS 0x38 +#define AST_HUB_EP0_DMA_ADDR 0x34 +#define AST_HUB_ROOT_CONFIG 0x04 +#define AST_HUB_EP_ACK_INT_ENABLE 0x10 +#define AST_HUB_EP_NAK_INT_ENABLE 0x14 + +#define AST_HUB_ROOT_SETUP_BUFFER 0x80 + +#define AST_EP0_OUT_READY (1 << 2) +#define AST_EP0_IN_READY (1 << 1) +#define AST_EP0_STALL (1 << 0) + +#define AST_EP_REG_SIZE 0x10 +#define AST_EP_BASE(i) (0x200 + (i) * 0x10) + +#define AST_EP_CONFIG 0x00 +#define AST_EP_DMA_CONTROL 0x04 +#define AST_EP_DESC_BASE 0x08 +#define AST_EP_DESC_STATUS 0x0C + +#define AST_EP_DL_RESET (1 << 2) +#define AST_EP_SINGLE_STAGE (1 << 1) +#define AST_EP_STALL_ENABLED (1 << 12) + +#define AST_EP_TYPE_DISABLED 0 +#define AST_EP_TYPE_BULK_IN 2 +#define AST_EP_TYPE_BULK_OUT 3 +#define AST_EP_TYPE_INT_IN 4 +#define AST_EP_TYPE_INT_OUT 5 +#define AST_EP_TYPE_ISO_IN 6 +#define AST_EP_TYPE_ISO_OUT 7 + +#define AST_EP_ENABLED 1 + +#define ep_set_type(type, config) \ + (config | (AST_EP_TYPE_##type << 4)) + +#define ast_hreadl(udcp, reg) \ + ioread32((udcp)->regs + AST_HUB_##reg) + +#define ast_hwritel(udcp, reg, value) \ + iowrite32(value, (udcp)->regs + AST_HUB_##reg) + +#define ep_hreadl(ep, reg) \ + ioread32((ep)->ep_regs + AST_EP_##reg) + +#define ep_hwritel(ep, reg, value) \ + iowrite32(value, (ep)->ep_regs + AST_EP_##reg) + + +struct aspeed_udc { + spinlock_t lock; + + void __iomem *regs; + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + struct platform_device *pdev; + + struct dma_pool *pool; + + void* ep0_dma_virt; + dma_addr_t ep0_dma_phys; + + u16 hub_address; + int irq; + unsigned int pullup_on; + + enum { + EP0_STAGE_SETUP, + EP0_STAGE_DATA, + EP0_STAGE_STATUS, + } ep0_stage; + /* either USB_DIR_OUT or USB_DIR_IN, valid if it is in data or status stage */ + u8 ep0_dir; +}; + +struct ast_usb_request { + struct usb_request req; + struct list_head queue; + size_t lastpacket; + + unsigned int in_transit:1; +}; + +struct ast_ep { + struct usb_ep ep; + u8 addr; + u8 index; + char epname[7]; + void __iomem *ep_regs; + + spinlock_t lock; + struct list_head queue; + void *txbuf; + dma_addr_t txbuf_phys; + + unsigned int dma_busy:1; + unsigned int to_host:1; + unsigned int active:1; + // const struct usb_endpoint_descriptor *desc; +}; + + +#endif /* __LINUX_USB_GADGET_ASPEED_UDC_H */ |