drivers/net/wireless/wl12xx/spi.h

   1 /*
   2  * This file is part of wl12xx
   3  *
   4  * Copyright (c) 1998-2007 Texas Instruments Incorporated
   5  * Copyright (C) 2008 Nokia Corporation
   6  *
   7  * Contact: Kalle Valo <kalle.valo@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 __WL12XX_SPI_H__
  26 #define __WL12XX_SPI_H__
  27
  28 #include "cmd.h"
  29 #include "acx.h"
  30 #include "reg.h"
  31
  32 #define HW_ACCESS_MEMORY_MAX_RANGE              0x1FFC0
  33
  34 #define HW_ACCESS_PART0_SIZE_ADDR           0x1FFC0
  35 #define HW_ACCESS_PART0_START_ADDR          0x1FFC4
  36 #define HW_ACCESS_PART1_SIZE_ADDR           0x1FFC8
  37 #define HW_ACCESS_PART1_START_ADDR          0x1FFCC
  38
  39 #define HW_ACCESS_REGISTER_SIZE             4
  40
  41 #define HW_ACCESS_PRAM_MAX_RANGE                0x3c000
  42
  43 #define WSPI_CMD_READ                 0x40000000
  44 #define WSPI_CMD_WRITE                0x00000000
  45 #define WSPI_CMD_FIXED                0x20000000
  46 #define WSPI_CMD_BYTE_LENGTH          0x1FFE0000
  47 #define WSPI_CMD_BYTE_LENGTH_OFFSET   17
  48 #define WSPI_CMD_BYTE_ADDR            0x0001FFFF
  49
  50 #define WSPI_INIT_CMD_CRC_LEN       5
  51
  52 #define WSPI_INIT_CMD_START         0x00
  53 #define WSPI_INIT_CMD_TX            0x40
  54 /* the extra bypass bit is sampled by the TNET as '1' */
  55 #define WSPI_INIT_CMD_BYPASS_BIT    0x80
  56 #define WSPI_INIT_CMD_FIXEDBUSY_LEN 0x07
  57 #define WSPI_INIT_CMD_EN_FIXEDBUSY  0x80
  58 #define WSPI_INIT_CMD_DIS_FIXEDBUSY 0x00
  59 #define WSPI_INIT_CMD_IOD           0x40
  60 #define WSPI_INIT_CMD_IP            0x20
  61 #define WSPI_INIT_CMD_CS            0x10
  62 #define WSPI_INIT_CMD_WS            0x08
  63 #define WSPI_INIT_CMD_WSPI          0x01
  64 #define WSPI_INIT_CMD_END           0x01
  65
  66 #define WSPI_INIT_CMD_LEN           8
  67
  68 #define HW_ACCESS_WSPI_FIXED_BUSY_LEN \
  69                 ((WL12XX_BUSY_WORD_LEN - 4) / sizeof(u32))
  70 #define HW_ACCESS_WSPI_INIT_CMD_MASK  0
  71
  72
  73 /* Raw target IO, address is not translated */
  74 void wl12xx_spi_write(struct wl12xx *wl, int addr, void *buf,
  75                       size_t len, bool fixed);
  76 void wl12xx_spi_read(struct wl12xx *wl, int addr, void *buf,
  77                      size_t len, bool fixed);
  78
  79 /* Memory target IO, address is tranlated to partition 0 */
  80 void wl12xx_spi_mem_read(struct wl12xx *wl, int addr, void *buf, size_t len);
  81 void wl12xx_spi_mem_write(struct wl12xx *wl, int addr, void *buf, size_t len);
  82 u32 wl12xx_mem_read32(struct wl12xx *wl, int addr);
  83 void wl12xx_mem_write32(struct wl12xx *wl, int addr, u32 val);
  84
  85 /* Registers IO */
  86 void wl12xx_spi_reg_read(struct wl12xx *wl, int addr, void *buf, size_t len,
  87                          bool fixed);
  88 void wl12xx_spi_reg_write(struct wl12xx *wl, int addr, void *buf, size_t len,
  89                           bool fixed);
  90 u32 wl12xx_reg_read32(struct wl12xx *wl, int addr);
  91 void wl12xx_reg_write32(struct wl12xx *wl, int addr, u32 val);
  92
  93 /* INIT and RESET words */
  94 void wl12xx_spi_reset(struct wl12xx *wl);
  95 void wl12xx_spi_init(struct wl12xx *wl);
  96 int wl12xx_set_partition(struct wl12xx *wl,
  97                          u32 part_start, u32 part_size,
  98                          u32 reg_start,  u32 reg_size);
  99
 100 static inline u32 wl12xx_read32(struct wl12xx *wl, int addr)
 101 {
 102         wl12xx_spi_read(wl, addr, &wl->buffer_32,
 103                         sizeof(wl->buffer_32), false);
 104
 105         return wl->buffer_32;
 106 }
 107
 108 static inline void wl12xx_write32(struct wl12xx *wl, int addr, u32 val)
 109 {
 110         wl->buffer_32 = val;
 111         wl12xx_spi_write(wl, addr, &wl->buffer_32,
 112                          sizeof(wl->buffer_32), false);
 113 }
 114
 115 #endif /* __WL12XX_SPI_H__ */