2 * Atheros AR9XXX SoCs built-in WMAC device support
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>
8 * Parts of this file are based on Atheros 2.6.15/2.6.31 BSP
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.
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>
22 #include <asm/mach-ar71xx/ar71xx.h>
24 #include "dev-ar9xxx-wmac.h"
26 #define MHZ_25 (25 * 1000 * 1000)
28 static struct ath9k_platform_data ar9xxx_wmac_data = {
31 static char ar9xxx_wmac_mac[6];
33 static struct resource ar9xxx_wmac_resources[] = {
35 /* .start and .end fields are filled dynamically */
36 .flags = IORESOURCE_MEM,
38 .start = AR71XX_CPU_IRQ_IP2,
39 .end = AR71XX_CPU_IRQ_IP2,
40 .flags = IORESOURCE_IRQ,
44 static struct platform_device ar9xxx_wmac_device = {
47 .resource = ar9xxx_wmac_resources,
48 .num_resources = ARRAY_SIZE(ar9xxx_wmac_resources),
50 .platform_data = &ar9xxx_wmac_data,
54 static void ar913x_wmac_init(void)
56 ar71xx_device_stop(RESET_MODULE_AMBA2WMAC);
59 ar71xx_device_start(RESET_MODULE_AMBA2WMAC);
62 ar9xxx_wmac_resources[0].start = AR91XX_WMAC_BASE;
63 ar9xxx_wmac_resources[0].end = AR91XX_WMAC_BASE + AR91XX_WMAC_SIZE - 1;
66 static int ar933x_r1_get_wmac_revision(void)
68 return ar71xx_soc_rev;
71 static int ar933x_wmac_reset(void)
75 ar71xx_device_stop(AR933X_RESET_WMAC);
76 ar71xx_device_start(AR933X_RESET_WMAC);
81 bootstrap = ar71xx_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
82 if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
92 pr_err("ar93xx: WMAC reset timed out");
96 static void ar933x_wmac_init(void)
98 ar9xxx_wmac_device.name = "ar933x_wmac";
99 ar9xxx_wmac_resources[0].start = AR933X_WMAC_BASE;
100 ar9xxx_wmac_resources[0].end = AR933X_WMAC_BASE + AR933X_WMAC_SIZE - 1;
101 if (ar71xx_ref_freq == MHZ_25)
102 ar9xxx_wmac_data.is_clk_25mhz = true;
104 if (ar71xx_soc_rev == 1)
105 ar9xxx_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
107 ar9xxx_wmac_data.external_reset = ar933x_wmac_reset;
112 static void ar934x_wmac_init(void)
114 ar9xxx_wmac_device.name = "ar934x_wmac";
115 ar9xxx_wmac_resources[0].start = AR934X_WMAC_BASE;
116 ar9xxx_wmac_resources[0].end = AR934X_WMAC_BASE + AR934X_WMAC_SIZE - 1;
117 if (ar71xx_ref_freq == MHZ_25)
118 ar9xxx_wmac_data.is_clk_25mhz = true;
121 void __init ar9xxx_add_device_wmac(u8 *cal_data, u8 *mac_addr)
123 switch (ar71xx_soc) {
124 case AR71XX_SOC_AR9130:
125 case AR71XX_SOC_AR9132:
129 case AR71XX_SOC_AR9330:
130 case AR71XX_SOC_AR9331:
134 case AR71XX_SOC_AR9341:
135 case AR71XX_SOC_AR9342:
136 case AR71XX_SOC_AR9344:
145 memcpy(ar9xxx_wmac_data.eeprom_data, cal_data,
146 sizeof(ar9xxx_wmac_data.eeprom_data));
149 memcpy(ar9xxx_wmac_mac, mac_addr, sizeof(ar9xxx_wmac_mac));
150 ar9xxx_wmac_data.macaddr = ar9xxx_wmac_mac;
153 platform_device_register(&ar9xxx_wmac_device);