Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Atheros AR913X/AR933X SoC built-in WMAC device support
3 *
4 * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
10 */
11
12#include <linux/init.h>
13#include <linux/delay.h>
14#include <linux/irq.h>
15#include <linux/platform_device.h>
16#include <linux/ath9k_platform.h>
17
18#include <asm/mach-ath79/ath79.h>
19#include <asm/mach-ath79/ar71xx_regs.h>
20#include "dev-wmac.h"
21
22static struct ath9k_platform_data ath79_wmac_data;
23
24static struct resource ath79_wmac_resources[] = {
25 {
26 /* .start and .end fields are filled dynamically */
27 .flags = IORESOURCE_MEM,
28 }, {
29 .start = ATH79_CPU_IRQ_IP2,
30 .end = ATH79_CPU_IRQ_IP2,
31 .flags = IORESOURCE_IRQ,
32 },
33};
34
35static struct platform_device ath79_wmac_device = {
36 .name = "ath9k",
37 .id = -1,
38 .resource = ath79_wmac_resources,
39 .num_resources = ARRAY_SIZE(ath79_wmac_resources),
40 .dev = {
41 .platform_data = &ath79_wmac_data,
42 },
43};
44
45static void __init ar913x_wmac_setup(void)
46{
47 /* reset the WMAC */
48 ath79_device_reset_set(AR913X_RESET_AMBA2WMAC);
49 mdelay(10);
50
51 ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC);
52 mdelay(10);
53
54 ath79_wmac_resources[0].start = AR913X_WMAC_BASE;
55 ath79_wmac_resources[0].end = AR913X_WMAC_BASE + AR913X_WMAC_SIZE - 1;
56}
57
58
59static int ar933x_wmac_reset(void)
60{
61 ath79_device_reset_clear(AR933X_RESET_WMAC);
62 ath79_device_reset_set(AR933X_RESET_WMAC);
63
64 return 0;
65}
66
67static int ar933x_r1_get_wmac_revision(void)
68{
69 return ath79_soc_rev;
70}
71
72static void __init ar933x_wmac_setup(void)
73{
74 u32 t;
75
76 ar933x_wmac_reset();
77
78 ath79_wmac_device.name = "ar933x_wmac";
79
80 ath79_wmac_resources[0].start = AR933X_WMAC_BASE;
81 ath79_wmac_resources[0].end = AR933X_WMAC_BASE + AR933X_WMAC_SIZE - 1;
82
83 t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
84 if (t & AR933X_BOOTSTRAP_REF_CLK_40)
85 ath79_wmac_data.is_clk_25mhz = false;
86 else
87 ath79_wmac_data.is_clk_25mhz = true;
88
89 if (ath79_soc_rev == 1)
90 ath79_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
91
92 ath79_wmac_data.external_reset = ar933x_wmac_reset;
93}
94
95void __init ath79_register_wmac(u8 *cal_data)
96{
97 if (soc_is_ar913x())
98 ar913x_wmac_setup();
99 if (soc_is_ar933x())
100 ar933x_wmac_setup();
101 else
102 BUG();
103
104 if (cal_data)
105 memcpy(ath79_wmac_data.eeprom_data, cal_data,
106 sizeof(ath79_wmac_data.eeprom_data));
107
108 platform_device_register(&ath79_wmac_device);
109}