Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1/*
2 * Atheros AR913X/AR933X SoC built-in WMAC device support
3 *
4 * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
5 * Copyright (C) 2008-2011 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/init.h>
16#include <linux/delay.h>
17#include <linux/irq.h>
18#include <linux/platform_device.h>
19#include <linux/ath9k_platform.h>
20
21#include <asm/mach-ath79/ath79.h>
22#include <asm/mach-ath79/ar71xx_regs.h>
23#include "dev-wmac.h"
24
25static struct ath9k_platform_data ath79_wmac_data;
26
27static struct resource ath79_wmac_resources[] = {
28 {
29 /* .start and .end fields are filled dynamically */
30 .flags = IORESOURCE_MEM,
31 }, {
32 /* .start and .end fields are filled dynamically */
33 .flags = IORESOURCE_IRQ,
34 },
35};
36
37static struct platform_device ath79_wmac_device = {
38 .name = "ath9k",
39 .id = -1,
40 .resource = ath79_wmac_resources,
41 .num_resources = ARRAY_SIZE(ath79_wmac_resources),
42 .dev = {
43 .platform_data = &ath79_wmac_data,
44 },
45};
46
47static void __init ar913x_wmac_setup(void)
48{
49 /* reset the WMAC */
50 ath79_device_reset_set(AR913X_RESET_AMBA2WMAC);
51 mdelay(10);
52
53 ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC);
54 mdelay(10);
55
56 ath79_wmac_resources[0].start = AR913X_WMAC_BASE;
57 ath79_wmac_resources[0].end = AR913X_WMAC_BASE + AR913X_WMAC_SIZE - 1;
58 ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
59 ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
60}
61
62
63static int ar933x_wmac_reset(void)
64{
65 ath79_device_reset_set(AR933X_RESET_WMAC);
66 ath79_device_reset_clear(AR933X_RESET_WMAC);
67
68 return 0;
69}
70
71static int ar933x_r1_get_wmac_revision(void)
72{
73 return ath79_soc_rev;
74}
75
76static void __init ar933x_wmac_setup(void)
77{
78 u32 t;
79
80 ar933x_wmac_reset();
81
82 ath79_wmac_device.name = "ar933x_wmac";
83
84 ath79_wmac_resources[0].start = AR933X_WMAC_BASE;
85 ath79_wmac_resources[0].end = AR933X_WMAC_BASE + AR933X_WMAC_SIZE - 1;
86 ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2);
87 ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2);
88
89 t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
90 if (t & AR933X_BOOTSTRAP_REF_CLK_40)
91 ath79_wmac_data.is_clk_25mhz = false;
92 else
93 ath79_wmac_data.is_clk_25mhz = true;
94
95 if (ath79_soc_rev == 1)
96 ath79_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision;
97
98 ath79_wmac_data.external_reset = ar933x_wmac_reset;
99}
100
101static void ar934x_wmac_setup(void)
102{
103 u32 t;
104
105 ath79_wmac_device.name = "ar934x_wmac";
106
107 ath79_wmac_resources[0].start = AR934X_WMAC_BASE;
108 ath79_wmac_resources[0].end = AR934X_WMAC_BASE + AR934X_WMAC_SIZE - 1;
109 ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
110 ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
111
112 t = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
113 if (t & AR934X_BOOTSTRAP_REF_CLK_40)
114 ath79_wmac_data.is_clk_25mhz = false;
115 else
116 ath79_wmac_data.is_clk_25mhz = true;
117}
118
119static void qca955x_wmac_setup(void)
120{
121 u32 t;
122
123 ath79_wmac_device.name = "qca955x_wmac";
124
125 ath79_wmac_resources[0].start = QCA955X_WMAC_BASE;
126 ath79_wmac_resources[0].end = QCA955X_WMAC_BASE + QCA955X_WMAC_SIZE - 1;
127 ath79_wmac_resources[1].start = ATH79_IP2_IRQ(1);
128 ath79_wmac_resources[1].end = ATH79_IP2_IRQ(1);
129
130 t = ath79_reset_rr(QCA955X_RESET_REG_BOOTSTRAP);
131 if (t & QCA955X_BOOTSTRAP_REF_CLK_40)
132 ath79_wmac_data.is_clk_25mhz = false;
133 else
134 ath79_wmac_data.is_clk_25mhz = true;
135}
136
137void __init ath79_register_wmac(u8 *cal_data)
138{
139 if (soc_is_ar913x())
140 ar913x_wmac_setup();
141 else if (soc_is_ar933x())
142 ar933x_wmac_setup();
143 else if (soc_is_ar934x())
144 ar934x_wmac_setup();
145 else if (soc_is_qca955x())
146 qca955x_wmac_setup();
147 else
148 BUG();
149
150 if (cal_data)
151 memcpy(ath79_wmac_data.eeprom_data, cal_data,
152 sizeof(ath79_wmac_data.eeprom_data));
153
154 platform_device_register(&ath79_wmac_device);
155}