drivers/net/wireless/acx/rx3715_acx.c

   1 /*
   2  * WLAN (TI TNETW1100B) support in the rx3715
   3  *
   4  * Copyright (c) 2006 SDG Systems, LLC
   5  * Copyright (c) 2006 Roman Moravcik
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file COPYING in the main directory of this archive for
   9  * more details.
  10  *
  11  * Based on hx4700_acx.c
  12  */
  13
  14
  15 #include <linux/kernel.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/delay.h>
  18 #include <linux/leds.h>
  19
  20 #include <asm/hardware.h>
  21
  22 #include <asm/arch/regs-gpio.h>
  23 #include <linux/soc/asic3_base.h>
  24 #include <asm/arch/rx3715-asic3.h>
  25 #include <asm/arch/rx3715-leds.h>
  26 #include <asm/io.h>
  27
  28 #include "acx_hw.h"
  29
  30 extern struct platform_device s3c_device_asic3;
  31
  32 #define WLAN_BASE       0x20000000
  33
  34 static int rx3715_wlan_start(void)
  35 {
  36         printk( "rx3715_wlan_start\n" );
  37         asic3_set_gpio_out_b(&s3c_device_asic3.dev, ASIC3_GPB3, ASIC3_GPB3);
  38         mdelay(20);
  39         asic3_set_gpio_out_c(&s3c_device_asic3.dev, ASIC3_GPC13, ASIC3_GPC13);
  40         mdelay(20);
  41         asic3_set_gpio_out_c(&s3c_device_asic3.dev, ASIC3_GPC11, ASIC3_GPC11);
  42         mdelay(100);
  43         asic3_set_gpio_out_b(&s3c_device_asic3.dev, ASIC3_GPB3, ASIC3_GPB3);
  44         mdelay(20);
  45         s3c2410_gpio_cfgpin(S3C2410_GPA15, S3C2410_GPA15_nGCS4);
  46         mdelay(100);
  47         s3c2410_gpio_setpin(S3C2410_GPA11, 0);
  48         mdelay(50);
  49         s3c2410_gpio_setpin(S3C2410_GPA11, 1);
  50         led_trigger_event_shared(rx3715_radio_trig, LED_FULL);
  51         return 0;
  52 }
  53
  54 static int rx3715_wlan_stop(void)
  55 {
  56         printk( "rx3715_wlan_stop\n" );
  57         s3c2410_gpio_setpin(S3C2410_GPA15, 1);
  58         s3c2410_gpio_cfgpin(S3C2410_GPA15, S3C2410_GPA15_OUT);
  59         asic3_set_gpio_out_b(&s3c_device_asic3.dev, ASIC3_GPB3, 0);
  60         asic3_set_gpio_out_c(&s3c_device_asic3.dev, ASIC3_GPC13, 0);
  61         asic3_set_gpio_out_c(&s3c_device_asic3.dev, ASIC3_GPC11, 0);
  62         led_trigger_event_shared(rx3715_radio_trig, LED_OFF);
  63         return 0;
  64 }
  65
  66 static struct resource acx_resources[] = {
  67         [0] = {
  68                 .start  = WLAN_BASE,
  69                 .end    = WLAN_BASE + 0x20,
  70                 .flags  = IORESOURCE_MEM,
  71         },
  72         [1] = {
  73                 .start  = IRQ_EINT16,
  74                 .end    = IRQ_EINT16,
  75                 .flags  = IORESOURCE_IRQ,
  76         },
  77 };
  78
  79 static struct acx_hardware_data acx_data = {
  80         .start_hw       = rx3715_wlan_start,
  81         .stop_hw        = rx3715_wlan_stop,
  82 };
  83
  84 static struct platform_device acx_device = {
  85         .name   = "acx-mem",
  86         .dev    = {
  87                 .platform_data = &acx_data,
  88         },
  89         .num_resources  = ARRAY_SIZE(acx_resources),
  90         .resource       = acx_resources,
  91 };
  92
  93 static int __init rx3715_wlan_init(void)
  94 {
  95         printk("rx3715_wlan_init: acx-mem platform_device_register\n");
  96         return platform_device_register(&acx_device);
  97 }
  98
  99
 100 static void __exit rx3715_wlan_exit(void)
 101 {
 102         platform_device_unregister(&acx_device);
 103 }
 104
 105 module_init(rx3715_wlan_init);
 106 module_exit(rx3715_wlan_exit);
 107
 108 MODULE_AUTHOR("Todd Blumer <todd@sdgsystems.com>");
 109 MODULE_DESCRIPTION("WLAN driver for rx3715");
 110 MODULE_LICENSE("GPL");
 111