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
|
/*
* arch/arm/mach-tegra/board-vcm30_t124-sdhci.c
*
* Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#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 <linux/platform_data/mmc-sdhci-tegra.h>
#include <asm/mach-types.h>
#include <mach/irqs.h>
#include <mach/board_id.h>
#include <linux/i2c.h>
#include "iomap.h"
#include "gpio-names.h"
#include "board.h"
#include "board-vcm30_t124.h"
#include "devices.h"
static void (*wifi_status_cb) (int card_present, void *dev_id);
static void *wifi_status_cb_devid;
static int
vcm30_t124_wifi_status_register(void (*callback) (int, void *), void *);
static int vcm30_t124_wifi_reset(int on);
static int vcm30_t124_wifi_power(int on);
static int vcm30_t124_wifi_set_carddetect(int val);
static struct wifi_platform_data vcm30_t124_wifi_control = {
.set_power = vcm30_t124_wifi_power,
.set_reset = vcm30_t124_wifi_reset,
.set_carddetect = vcm30_t124_wifi_set_carddetect,
};
static struct platform_device broadcom_wifi_device = {
.name = "bcm4329_wlan",
.id = 1,
.dev = {
.platform_data = &vcm30_t124_wifi_control,
},
};
#ifdef CONFIG_MMC_EMBEDDED_SDIO
static struct embedded_sdio_data embedded_sdio_data1 = {
.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
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data1 = {
.mmc_data = {
.register_status_notify = vcm30_t124_wifi_status_register,
#ifdef CONFIG_MMC_EMBEDDED_SDIO
.embedded_sdio = &embedded_sdio_data1,
#endif
.built_in = 0,
.ocr_mask = MMC_OCR_1V8_MASK,
},
#ifndef CONFIG_MMC_EMBEDDED_SDIO
.pm_flags = MMC_PM_KEEP_POWER,
#endif
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = -1,
.tap_delay = 0x5,
.trim_delay = 0x2,
.is_8bit = false,
.ddr_clk_limit = 30000000,
.max_clk_limit = 50000000,
/*
* FIXME: Wifi currently working on HS mode.
* enable SDR104, DDR50 and SDR50 mode for wifi using
* bug 1457466
*/
.uhs_mask = MMC_UHS_MASK_SDR104 |
MMC_UHS_MASK_DDR50 | MMC_UHS_MASK_SDR50,
.calib_3v3_offsets = 0x7676,
.calib_1v8_offsets = 0x7676,
.disable_clock_gate = 1,
};
static int vcm30_t124_wifi_status_register(
void (*callback) (int card_present, void *dev_id),
void *dev_id)
{
if (wifi_status_cb)
return -EBUSY;
wifi_status_cb = callback;
wifi_status_cb_devid = dev_id;
return 0;
}
static int vcm30_t124_wifi_set_carddetect(int val)
{
if (wifi_status_cb)
wifi_status_cb(val, wifi_status_cb_devid);
else
pr_warn("%s: Nobody to notify\n", __func__);
return 0;
}
static int vcm30_t124_wifi_power(int on)
{
int ret;
/* Deassert WiFi RST GPIO */
ret = gpio_request(MISCIO_WF_EN_GPIO, "wifi_en");
if (ret < 0)
goto fail;
gpio_direction_output(MISCIO_WF_EN_GPIO, on);
gpio_free(MISCIO_WF_EN_GPIO);
ret = gpio_request(MISCIO_WF_RST_GPIO, "wifi_rst");
if (ret < 0)
goto fail;
gpio_direction_output(MISCIO_WF_RST_GPIO, on);
gpio_free(MISCIO_WF_RST_GPIO);
mdelay(100);
return 0;
fail:
printk(KERN_ERR "%s: gpio_request failed(%d)\r\n", __func__, ret);
return ret;
}
static int vcm30_t124_wifi_reset(int on)
{
/*
* FIXME: Implement wifi reset
*/
return 0;
}
int __init vcm30_t124_wifi_init(void)
{
platform_device_register(&broadcom_wifi_device);
return 0;
}
int __init vcm30_t124_sdhci_init(void)
{
tegra_sdhci_device1.dev.platform_data = &tegra_sdhci_platform_data1;
platform_device_register(&tegra_sdhci_device1);
vcm30_t124_wifi_init();
return 0;
}
|
