summaryrefslogtreecommitdiff
path: root/arch/arm/mach-tegra/board-aruba-sdhci.c
blob: 678385f2b8bdb932d98b9202e709f9cd1cb52f6d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
/*
 * arch/arm/mach-tegra/board-aruba-sdhci.c
 *
 * Copyright (C) 2010 Google, Inc.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/resource.h>
#include <linux/platform_device.h>
#include <linux/wlan_plat.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mmc/host.h>

#include <asm/mach-types.h>
#include <mach/irqs.h>
#include <mach/iomap.h>
#include <mach/sdhci.h>

#include "gpio-names.h"
#include "board.h"

#define ARUBA_WIFI 0	/* !!!FIXME!!! NOT SUPPORTED YET */

#if ARUBA_WIFI

#define ARUBA_WLAN_PWR	TEGRA_GPIO_PK5
#define ARUBA_WLAN_RST	TEGRA_GPIO_PK6

static void (*wifi_status_cb)(int card_present, void *dev_id);
static void *wifi_status_cb_devid;
static int aruba_wifi_status_register(void (*callback)(int , void *), void *);
static struct clk *wifi_32k_clk;

static int aruba_wifi_reset(int on);
static int aruba_wifi_power(int on);
static int aruba_wifi_set_carddetect(int val);

static struct wifi_platform_data aruba_wifi_control = {
	.set_power      = aruba_wifi_power,
	.set_reset      = aruba_wifi_reset,
	.set_carddetect = aruba_wifi_set_carddetect,
};

static struct platform_device aruba_wifi_device = {
	.name           = "bcm4329_wlan",
	.id             = 1,
	.dev            = {
		.platform_data = &aruba_wifi_control,
	},
};
#endif

static struct resource sdhci_resource0[] = {
	[0] = {
		.start  = INT_SDMMC1,
		.end    = INT_SDMMC1,
		.flags  = IORESOURCE_IRQ,
	},
	[1] = {
		.start	= TEGRA_SDMMC1_BASE,
		.end	= TEGRA_SDMMC1_BASE + TEGRA_SDMMC1_SIZE-1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct resource sdhci_resource2[] = {
	[0] = {
		.start  = INT_SDMMC3,
		.end    = INT_SDMMC3,
		.flags  = IORESOURCE_IRQ,
	},
	[1] = {
		.start	= TEGRA_SDMMC3_BASE,
		.end	= TEGRA_SDMMC3_BASE + TEGRA_SDMMC3_SIZE-1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct resource sdhci_resource3[] = {
	[0] = {
		.start  = INT_SDMMC4,
		.end    = INT_SDMMC4,
		.flags  = IORESOURCE_IRQ,
	},
	[1] = {
		.start	= TEGRA_SDMMC4_BASE,
		.end	= TEGRA_SDMMC4_BASE + TEGRA_SDMMC4_SIZE-1,
		.flags	= IORESOURCE_MEM,
	},
};


static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
#if ARUBA_WIFI  /* !!!FIXME!!! NOT SUPPORTED YET */
	.register_status_notify	= aruba_wifi_status_register,
	.cccr   = {
		.sdio_vsn       = 2,
		.multi_block    = 1,
		.low_speed      = 0,
		.wide_bus       = 0,
		.high_power     = 1,
		.high_speed     = 1,
	},
	.cis  = {
		.vendor         = 0x02d0,
		.device         = 0x4329,
	},
#endif
	.cd_gpio = -1,
	.wp_gpio = -1,
	.power_gpio = -1,
/*	.max_clk = 12000000, */
};

static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
	.cd_gpio = -1,
	.wp_gpio = -1,
	.power_gpio = -1,
/*	.max_clk = 12000000, */
};

static struct tegra_sdhci_platform_data tegra_sdhci_platform_data3 = {
	.cd_gpio = -1,
	.wp_gpio = -1,
	.power_gpio = -1,
/*	.max_clk = 12000000, */
};

static struct platform_device tegra_sdhci_device0 = {
	.name		= "sdhci-tegra",
	.id		= 0,
	.resource	= sdhci_resource0,
	.num_resources	= ARRAY_SIZE(sdhci_resource0),
	.dev = {
		.platform_data = &tegra_sdhci_platform_data0,
	},
};

static struct platform_device tegra_sdhci_device2 = {
	.name		= "sdhci-tegra",
	.id		= 2,
	.resource	= sdhci_resource2,
	.num_resources	= ARRAY_SIZE(sdhci_resource2),
	.dev = {
		.platform_data = &tegra_sdhci_platform_data2,
	},
};

static struct platform_device tegra_sdhci_device3 = {
	.name		= "sdhci-tegra",
	.id		= 3,
	.resource	= sdhci_resource3,
	.num_resources	= ARRAY_SIZE(sdhci_resource3),
	.dev = {
		.platform_data = &tegra_sdhci_platform_data3,
	},
};

#if ARUBA_WIFI /* !!!FIXME!!! NOT SUPPORTED YET */
static int aruba_wifi_status_register(
		void (*callback)(int card_present, void *dev_id),
		void *dev_id)
{
	if (wifi_status_cb)
		return -EAGAIN;
	wifi_status_cb = callback;
	wifi_status_cb_devid = dev_id;
	return 0;
}

static int aruba_wifi_set_carddetect(int val)
{
	pr_debug("%s: %d\n", __func__, val);
	if (wifi_status_cb)
		wifi_status_cb(val, wifi_status_cb_devid);
	else
		pr_warning("%s: Nobody to notify\n", __func__);
	return 0;
}

static int aruba_wifi_power(int on)
{
	pr_debug("%s: %d\n", __func__, on);

	gpio_set_value(ARUBA_WLAN_PWR, on);
	mdelay(100);
	gpio_set_value(ARUBA_WLAN_RST, on);
	mdelay(200);

	if (on)
		clk_enable(wifi_32k_clk);
	else
		clk_disable(wifi_32k_clk);

	return 0;
}

static int aruba_wifi_reset(int on)
{
	pr_debug("%s: do nothing\n", __func__);
	return 0;
}

static int __init aruba_wifi_init(void)
{
	wifi_32k_clk = clk_get_sys(NULL, "blink");
	if (IS_ERR(wifi_32k_clk)) {
		pr_err("%s: unable to get blink clock\n", __func__);
		return PTR_ERR(wifi_32k_clk);
	}

	gpio_request(ARUBA_WLAN_PWR, "wlan_power");
	gpio_request(ARUBA_WLAN_RST, "wlan_rst");

	gpio_direction_output(ARUBA_WLAN_PWR, 0);
	gpio_direction_output(ARUBA_WLAN_RST, 0);

	platform_device_register(&aruba_wifi_device);
	return 0;
}
#else
#define aruba_wifi_init() do {} while (0)
#endif

int __init aruba_sdhci_init(void)
{
	platform_device_register(&tegra_sdhci_device3);
	platform_device_register(&tegra_sdhci_device2);
	platform_device_register(&tegra_sdhci_device0);

	aruba_wifi_init();
	return 0;
}