drivers/net/wireless/wl12xx/wl1271_spi.h

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
   5  * Copyright (C) 2008-2009 Nokia Corporation
   6  *
   7  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 #ifndef __WL1271_SPI_H__
  26 #define __WL1271_SPI_H__
  27
  28 #include "wl1271_reg.h"
  29
  30 #define HW_ACCESS_MEMORY_MAX_RANGE              0x1FFC0
  31
  32 #define HW_ACCESS_PART0_SIZE_ADDR           0x1FFC0
  33 #define HW_ACCESS_PART0_START_ADDR          0x1FFC4
  34 #define HW_ACCESS_PART1_SIZE_ADDR           0x1FFC8
  35 #define HW_ACCESS_PART1_START_ADDR          0x1FFCC
  36
  37 #define HW_ACCESS_REGISTER_SIZE             4
  38
  39 #define HW_ACCESS_PRAM_MAX_RANGE                0x3c000
  40
  41 #define WSPI_CMD_READ                 0x40000000
  42 #define WSPI_CMD_WRITE                0x00000000
  43 #define WSPI_CMD_FIXED                0x20000000
  44 #define WSPI_CMD_BYTE_LENGTH          0x1FFE0000
  45 #define WSPI_CMD_BYTE_LENGTH_OFFSET   17
  46 #define WSPI_CMD_BYTE_ADDR            0x0001FFFF
  47
  48 #define WSPI_INIT_CMD_CRC_LEN       5
  49
  50 #define WSPI_INIT_CMD_START         0x00
  51 #define WSPI_INIT_CMD_TX            0x40
  52 /* the extra bypass bit is sampled by the TNET as '1' */
  53 #define WSPI_INIT_CMD_BYPASS_BIT    0x80
  54 #define WSPI_INIT_CMD_FIXEDBUSY_LEN 0x07
  55 #define WSPI_INIT_CMD_EN_FIXEDBUSY  0x80
  56 #define WSPI_INIT_CMD_DIS_FIXEDBUSY 0x00
  57 #define WSPI_INIT_CMD_IOD           0x40
  58 #define WSPI_INIT_CMD_IP            0x20
  59 #define WSPI_INIT_CMD_CS            0x10
  60 #define WSPI_INIT_CMD_WS            0x08
  61 #define WSPI_INIT_CMD_WSPI          0x01
  62 #define WSPI_INIT_CMD_END           0x01
  63
  64 #define WSPI_INIT_CMD_LEN           8
  65
  66 #define HW_ACCESS_WSPI_FIXED_BUSY_LEN \
  67                 ((WL1271_BUSY_WORD_LEN - 4) / sizeof(u32))
  68 #define HW_ACCESS_WSPI_INIT_CMD_MASK  0
  69
  70
  71 /* Raw target IO, address is not translated */
  72 void wl1271_spi_write(struct wl1271 *wl, int addr, void *buf,
  73                       size_t len, bool fixed);
  74 void wl1271_spi_read(struct wl1271 *wl, int addr, void *buf,
  75                      size_t len, bool fixed);
  76
  77 /* Memory target IO, address is tranlated to partition 0 */
  78 void wl1271_spi_mem_read(struct wl1271 *wl, int addr, void *buf, size_t len);
  79 void wl1271_spi_mem_write(struct wl1271 *wl, int addr, void *buf, size_t len);
  80 u32 wl1271_mem_read32(struct wl1271 *wl, int addr);
  81 void wl1271_mem_write32(struct wl1271 *wl, int addr, u32 val);
  82
  83 /* Registers IO */
  84 void wl1271_spi_reg_read(struct wl1271 *wl, int addr, void *buf, size_t len,
  85                          bool fixed);
  86 void wl1271_spi_reg_write(struct wl1271 *wl, int addr, void *buf, size_t len,
  87                           bool fixed);
  88 u32 wl1271_reg_read32(struct wl1271 *wl, int addr);
  89 void wl1271_reg_write32(struct wl1271 *wl, int addr, u32 val);
  90
  91 /* INIT and RESET words */
  92 void wl1271_spi_reset(struct wl1271 *wl);
  93 void wl1271_spi_init(struct wl1271 *wl);
  94 int wl1271_set_partition(struct wl1271 *wl,
  95                          u32 part_start, u32 part_size,
  96                          u32 reg_start,  u32 reg_size);
  97
  98 static inline u32 wl1271_read32(struct wl1271 *wl, int addr)
  99 {
 100         wl1271_spi_read(wl, addr, &wl->buffer_32,
 101                         sizeof(wl->buffer_32), false);
 102
 103         return wl->buffer_32;
 104 }
 105
 106 static inline void wl1271_write32(struct wl1271 *wl, int addr, u32 val)
 107 {
 108         wl->buffer_32 = val;
 109         wl1271_spi_write(wl, addr, &wl->buffer_32,
 110                          sizeof(wl->buffer_32), false);
 111 }
 112
 113 #endif /* __WL1271_SPI_H__ */