target/linux/ar71xx/files/arch/mips/ar71xx/dev-ar9xxx-wmac.c

   1 /*
   2  *  Atheros AR9XXX SoCs built-in WMAC device support
   3  *
   4  *  Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
   5  *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
   6  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   7  *
   8  *  Parts of this file are based on Atheros 2.6.15/2.6.31 BSP
   9  *
  10  *  This program is free software; you can redistribute it and/or modify it
  11  *  under the terms of the GNU General Public License version 2 as published
  12  *  by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/delay.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/ath9k_platform.h>
  21
  22 #include <asm/mach-ar71xx/ar71xx.h>
  23
  24 #include "dev-ar9xxx-wmac.h"
  25
  26 #define MHZ_25  (25 * 1000 * 1000)
  27
  28 static struct ath9k_platform_data ar9xxx_wmac_data = {
  29         .led_pin = -1,
  30 };
  31 static char ar9xxx_wmac_mac[6];
  32
  33 static struct resource ar9xxx_wmac_resources[] = {
  34         {
  35                 /* .start and .end fields are filled dynamically */
  36                 .flags  = IORESOURCE_MEM,
  37         }, {
  38                 .start  = AR71XX_CPU_IRQ_IP2,
  39                 .end    = AR71XX_CPU_IRQ_IP2,
  40                 .flags  = IORESOURCE_IRQ,
  41         },
  42 };
  43
  44 static struct platform_device ar9xxx_wmac_device = {
  45         .name           = "ath9k",
  46         .id             = -1,
  47         .resource       = ar9xxx_wmac_resources,
  48         .num_resources  = ARRAY_SIZE(ar9xxx_wmac_resources),
  49         .dev = {
  50                 .platform_data = &ar9xxx_wmac_data,
  51         },
  52 };
  53
  54 static void ar913x_wmac_init(void)
  55 {
  56         ar71xx_device_stop(RESET_MODULE_AMBA2WMAC);
  57         mdelay(10);
  58
  59         ar71xx_device_start(RESET_MODULE_AMBA2WMAC);
  60         mdelay(10);
  61
  62         ar9xxx_wmac_resources[0].start = AR91XX_WMAC_BASE;
  63         ar9xxx_wmac_resources[0].end = AR91XX_WMAC_BASE + AR91XX_WMAC_SIZE - 1;
  64 }
  65
  66 static int ar933x_r1_get_wmac_revision(void)
  67 {
  68         return ar71xx_soc_rev;
  69 }
  70
  71 static void ar933x_wmac_init(void)
  72 {
  73         ar9xxx_wmac_device.name = "ar933x_wmac";
  74         ar9xxx_wmac_resources[0].start = AR933X_WMAC_BASE;
  75         ar9xxx_wmac_resources[0].end = AR933X_WMAC_BASE + AR933X_WMAC_SIZE - 1;
  76         if (ar71xx_ref_freq == MHZ_25)
  77                 ar9xxx_wmac_data.is_clk_25mhz = true;
  78
  79         if (ar71xx_soc_rev == 1)
  80                 ar9xxx_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
  81 }
  82
  83 static void ar934x_wmac_init(void)
  84 {
  85         ar9xxx_wmac_device.name = "ar934x_wmac";
  86         ar9xxx_wmac_resources[0].start = AR934X_WMAC_BASE;
  87         ar9xxx_wmac_resources[0].end = AR934X_WMAC_BASE + AR934X_WMAC_SIZE - 1;
  88         if (ar71xx_ref_freq == MHZ_25)
  89                 ar9xxx_wmac_data.is_clk_25mhz = true;
  90 }
  91
  92 void __init ar9xxx_add_device_wmac(u8 *cal_data, u8 *mac_addr)
  93 {
  94         switch (ar71xx_soc) {
  95         case AR71XX_SOC_AR9130:
  96         case AR71XX_SOC_AR9132:
  97                 ar913x_wmac_init();
  98                 break;
  99
 100         case AR71XX_SOC_AR9330:
 101         case AR71XX_SOC_AR9331:
 102                 ar933x_wmac_init();
 103                 break;
 104
 105         case AR71XX_SOC_AR9341:
 106         case AR71XX_SOC_AR9342:
 107         case AR71XX_SOC_AR9344:
 108                 ar934x_wmac_init();
 109                 break;
 110
 111         default:
 112                 BUG();
 113         }
 114
 115         if (cal_data)
 116                 memcpy(ar9xxx_wmac_data.eeprom_data, cal_data,
 117                        sizeof(ar9xxx_wmac_data.eeprom_data));
 118
 119         if (mac_addr) {
 120                 memcpy(ar9xxx_wmac_mac, mac_addr, sizeof(ar9xxx_wmac_mac));
 121                 ar9xxx_wmac_data.macaddr = ar9xxx_wmac_mac;
 122         }
 123
 124         platform_device_register(&ar9xxx_wmac_device);
 125 }