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 void ar934x_wmac_init(void)
  67 {
  68         ar9xxx_wmac_device.name = "ar934x_wmac";
  69         ar9xxx_wmac_resources[0].start = AR934X_WMAC_BASE;
  70         ar9xxx_wmac_resources[0].end = AR934X_WMAC_BASE + AR934X_WMAC_SIZE - 1;
  71         if (ar71xx_ref_freq == MHZ_25)
  72                 ar9xxx_wmac_data.is_clk_25mhz = true;
  73 }
  74
  75 void __init ar9xxx_add_device_wmac(u8 *cal_data, u8 *mac_addr)
  76 {
  77         switch (ar71xx_soc) {
  78         case AR71XX_SOC_AR9130:
  79         case AR71XX_SOC_AR9132:
  80                 ar913x_wmac_init();
  81                 break;
  82
  83         case AR71XX_SOC_AR9341:
  84         case AR71XX_SOC_AR9342:
  85         case AR71XX_SOC_AR9344:
  86                 ar934x_wmac_init();
  87                 break;
  88
  89         default:
  90                 BUG();
  91         }
  92
  93         if (cal_data)
  94                 memcpy(ar9xxx_wmac_data.eeprom_data, cal_data,
  95                        sizeof(ar9xxx_wmac_data.eeprom_data));
  96
  97         if (mac_addr) {
  98                 memcpy(ar9xxx_wmac_mac, mac_addr, sizeof(ar9xxx_wmac_mac));
  99                 ar9xxx_wmac_data.macaddr = ar9xxx_wmac_mac;
 100         }
 101
 102         platform_device_register(&ar9xxx_wmac_device);
 103 }