diff options
Diffstat (limited to 'drivers/usb/gadget/r8a66597-udc.h')
| -rw-r--r-- | drivers/usb/gadget/r8a66597-udc.h | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/drivers/usb/gadget/r8a66597-udc.h b/drivers/usb/gadget/r8a66597-udc.h new file mode 100644 index 000000000000..9a537aa07968 --- /dev/null +++ b/drivers/usb/gadget/r8a66597-udc.h @@ -0,0 +1,275 @@ +/* + * R8A66597 UDC + * + * Copyright (C) 2007-2009 Renesas Solutions Corp. + * + * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifndef __R8A66597_H__ +#define __R8A66597_H__ + +#ifdef CONFIG_HAVE_CLK +#include <linux/clk.h> +#endif + +#include <linux/usb/r8a66597.h> + +#define R8A66597_MAX_SAMPLING 10 + +#define R8A66597_MAX_NUM_PIPE 8 +#define R8A66597_MAX_NUM_BULK 3 +#define R8A66597_MAX_NUM_ISOC 2 +#define R8A66597_MAX_NUM_INT 2 + +#define R8A66597_BASE_PIPENUM_BULK 3 +#define R8A66597_BASE_PIPENUM_ISOC 1 +#define R8A66597_BASE_PIPENUM_INT 6 + +#define R8A66597_BASE_BUFNUM 6 +#define R8A66597_MAX_BUFNUM 0x4F + +#define is_bulk_pipe(pipenum) \ + ((pipenum >= R8A66597_BASE_PIPENUM_BULK) && \ + (pipenum < (R8A66597_BASE_PIPENUM_BULK + R8A66597_MAX_NUM_BULK))) +#define is_interrupt_pipe(pipenum) \ + ((pipenum >= R8A66597_BASE_PIPENUM_INT) && \ + (pipenum < (R8A66597_BASE_PIPENUM_INT + R8A66597_MAX_NUM_INT))) +#define is_isoc_pipe(pipenum) \ + ((pipenum >= R8A66597_BASE_PIPENUM_ISOC) && \ + (pipenum < (R8A66597_BASE_PIPENUM_ISOC + R8A66597_MAX_NUM_ISOC))) + +struct r8a66597_pipe_info { + u16 pipe; + u16 epnum; + u16 maxpacket; + u16 type; + u16 interval; + u16 dir_in; +}; + +struct r8a66597_request { + struct usb_request req; + struct list_head queue; +}; + +struct r8a66597_ep { + struct usb_ep ep; + struct r8a66597 *r8a66597; + + struct list_head queue; + unsigned busy:1; + unsigned wedge:1; + unsigned internal_ccpl:1; /* use only control */ + + /* this member can able to after r8a66597_enable */ + unsigned use_dma:1; + u16 pipenum; + u16 type; + const struct usb_endpoint_descriptor *desc; + /* register address */ + unsigned char fifoaddr; + unsigned char fifosel; + unsigned char fifoctr; + unsigned char fifotrn; + unsigned char pipectr; +}; + +struct r8a66597 { + spinlock_t lock; + unsigned long reg; + +#ifdef CONFIG_HAVE_CLK + struct clk *clk; +#endif + struct r8a66597_platdata *pdata; + + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + + struct r8a66597_ep ep[R8A66597_MAX_NUM_PIPE]; + struct r8a66597_ep *pipenum2ep[R8A66597_MAX_NUM_PIPE]; + struct r8a66597_ep *epaddr2ep[16]; + + struct timer_list timer; + struct usb_request *ep0_req; /* for internal request */ + u16 ep0_data; /* for internal request */ + u16 old_vbus; + u16 scount; + u16 old_dvsq; + + /* pipe config */ + unsigned char bulk; + unsigned char interrupt; + unsigned char isochronous; + unsigned char num_dma; + + unsigned irq_sense_low:1; +}; + +#define gadget_to_r8a66597(_gadget) \ + container_of(_gadget, struct r8a66597, gadget) +#define r8a66597_to_gadget(r8a66597) (&r8a66597->gadget) + +static inline u16 r8a66597_read(struct r8a66597 *r8a66597, unsigned long offset) +{ + return inw(r8a66597->reg + offset); +} + +static inline void r8a66597_read_fifo(struct r8a66597 *r8a66597, + unsigned long offset, + unsigned char *buf, + int len) +{ + unsigned long fifoaddr = r8a66597->reg + offset; + unsigned int data; + int i; + + if (r8a66597->pdata->on_chip) { + /* 32-bit accesses for on_chip controllers */ + + /* aligned buf case */ + if (len >= 4 && !((unsigned long)buf & 0x03)) { + insl(fifoaddr, buf, len / 4); + buf += len & ~0x03; + len &= 0x03; + } + + /* unaligned buf case */ + for (i = 0; i < len; i++) { + if (!(i & 0x03)) + data = inl(fifoaddr); + + buf[i] = (data >> ((i & 0x03) * 8)) & 0xff; + } + } else { + /* 16-bit accesses for external controllers */ + + /* aligned buf case */ + if (len >= 2 && !((unsigned long)buf & 0x01)) { + insw(fifoaddr, buf, len / 2); + buf += len & ~0x01; + len &= 0x01; + } + + /* unaligned buf case */ + for (i = 0; i < len; i++) { + if (!(i & 0x01)) + data = inw(fifoaddr); + + buf[i] = (data >> ((i & 0x01) * 8)) & 0xff; + } + } +} + +static inline void r8a66597_write(struct r8a66597 *r8a66597, u16 val, + unsigned long offset) +{ + outw(val, r8a66597->reg + offset); +} + +static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597, + unsigned long offset, + unsigned char *buf, + int len) +{ + unsigned long fifoaddr = r8a66597->reg + offset; + int adj = 0; + int i; + + if (r8a66597->pdata->on_chip) { + /* 32-bit access only if buf is 32-bit aligned */ + if (len >= 4 && !((unsigned long)buf & 0x03)) { + outsl(fifoaddr, buf, len / 4); + buf += len & ~0x03; + len &= 0x03; + } + } else { + /* 16-bit access only if buf is 16-bit aligned */ + if (len >= 2 && !((unsigned long)buf & 0x01)) { + outsw(fifoaddr, buf, len / 2); + buf += len & ~0x01; + len &= 0x01; + } + } + + /* adjust fifo address in the little endian case */ + if (!(r8a66597_read(r8a66597, CFIFOSEL) & BIGEND)) { + if (r8a66597->pdata->on_chip) + adj = 0x03; /* 32-bit wide */ + else + adj = 0x01; /* 16-bit wide */ + } + + for (i = 0; i < len; i++) + outb(buf[i], fifoaddr + adj - (i & adj)); +} + +static inline void r8a66597_mdfy(struct r8a66597 *r8a66597, + u16 val, u16 pat, unsigned long offset) +{ + u16 tmp; + tmp = r8a66597_read(r8a66597, offset); + tmp = tmp & (~pat); + tmp = tmp | val; + r8a66597_write(r8a66597, tmp, offset); +} + +static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata) +{ + u16 clock = 0; + + switch (pdata->xtal) { + case R8A66597_PLATDATA_XTAL_12MHZ: + clock = XTAL12; + break; + case R8A66597_PLATDATA_XTAL_24MHZ: + clock = XTAL24; + break; + case R8A66597_PLATDATA_XTAL_48MHZ: + clock = XTAL48; + break; + default: + printk(KERN_ERR "r8a66597: platdata clock is wrong.\n"); + break; + } + + return clock; +} + +#define r8a66597_bclr(r8a66597, val, offset) \ + r8a66597_mdfy(r8a66597, 0, val, offset) +#define r8a66597_bset(r8a66597, val, offset) \ + r8a66597_mdfy(r8a66597, val, 0, offset) + +#define get_pipectr_addr(pipenum) (PIPE1CTR + (pipenum - 1) * 2) + +#define enable_irq_ready(r8a66597, pipenum) \ + enable_pipe_irq(r8a66597, pipenum, BRDYENB) +#define disable_irq_ready(r8a66597, pipenum) \ + disable_pipe_irq(r8a66597, pipenum, BRDYENB) +#define enable_irq_empty(r8a66597, pipenum) \ + enable_pipe_irq(r8a66597, pipenum, BEMPENB) +#define disable_irq_empty(r8a66597, pipenum) \ + disable_pipe_irq(r8a66597, pipenum, BEMPENB) +#define enable_irq_nrdy(r8a66597, pipenum) \ + enable_pipe_irq(r8a66597, pipenum, NRDYENB) +#define disable_irq_nrdy(r8a66597, pipenum) \ + disable_pipe_irq(r8a66597, pipenum, NRDYENB) + +#endif /* __R8A66597_H__ */ + |