drivers/net/wireless/acx/htcuniversal_acx.c

   1 /*
   2  * WLAN (TI TNETW1100B) support in the HTC Universal
   3  *
   4  * Copyright (c) 2006 SDG Systems, LLC
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file COPYING in the main directory of this archive for
   8  * more details.
   9  *
  10  * 28-March-2006          Todd Blumer <todd@sdgsystems.com>
  11  */
  12
  13
  14 #include <linux/kernel.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/delay.h>
  17
  18 #include <asm/hardware.h>
  19
  20 #include <asm/arch/pxa-regs.h>
  21 #include <linux/soc/asic3_base.h>
  22 #include <asm/arch/htcuniversal-gpio.h>
  23 #include <asm/arch/htcuniversal-asic.h>
  24 #include <asm/io.h>
  25
  26 #include "acx_hw.h"
  27
  28 #define WLAN_BASE       PXA_CS2_PHYS
  29
  30
  31 static int
  32 htcuniversal_wlan_start( void )
  33 {
  34         htcuniversal_egpio_enable(EGPIO6_WIFI_ON);
  35         asic3_set_gpio_out_c(&htcuniversal_asic3.dev, 1<<GPIOC_WIFI_PWR1_ON, 1<<GPIOC_WIFI_PWR1_ON);
  36         asic3_set_gpio_out_d(&htcuniversal_asic3.dev, 1<<GPIOD_WIFI_PWR3_ON, 1<<GPIOD_WIFI_PWR3_ON);
  37         asic3_set_gpio_out_d(&htcuniversal_asic3.dev, 1<<GPIOD_WIFI_PWR2_ON, 1<<GPIOD_WIFI_PWR2_ON);
  38         mdelay(100);
  39
  40         asic3_set_gpio_out_c(&htcuniversal_asic3.dev, 1<<GPIOC_WIFI_RESET, 0);
  41         mdelay(100);
  42         asic3_set_gpio_out_c(&htcuniversal_asic3.dev, 1<<GPIOC_WIFI_RESET, 1<<GPIOC_WIFI_RESET);
  43         mdelay(100);
  44         return 0;
  45 }
  46
  47 static int
  48 htcuniversal_wlan_stop( void )
  49 {
  50         asic3_set_gpio_out_c(&htcuniversal_asic3.dev, 1<<GPIOC_WIFI_RESET, 0);
  51
  52         htcuniversal_egpio_disable(EGPIO6_WIFI_ON);
  53         asic3_set_gpio_out_c(&htcuniversal_asic3.dev, 1<<GPIOC_WIFI_PWR1_ON, 0);
  54         asic3_set_gpio_out_d(&htcuniversal_asic3.dev, 1<<GPIOD_WIFI_PWR2_ON, 0);
  55         asic3_set_gpio_out_d(&htcuniversal_asic3.dev, 1<<GPIOD_WIFI_PWR3_ON, 0);
  56         return 0;
  57 }
  58
  59 static struct resource acx_resources[] = {
  60         [0] = {
  61                 .start  = WLAN_BASE,
  62                 .end    = WLAN_BASE + 0x20,
  63                 .flags  = IORESOURCE_MEM,
  64         },
  65         [1] = {
  66 //              .start  = asic3_irq_base(&htcuniversal_asic3.dev) + ASIC3_GPIOC_IRQ_BASE+GPIOC_WIFI_IRQ_N,
  67 //              .end    = asic3_irq_base(&htcuniversal_asic3.dev) + ASIC3_GPIOC_IRQ_BASE+GPIOC_WIFI_IRQ_N,
  68                 .flags  = IORESOURCE_IRQ,
  69         },
  70 };
  71
  72 static struct acx_hardware_data acx_data = {
  73         .start_hw       = htcuniversal_wlan_start,
  74         .stop_hw        = htcuniversal_wlan_stop,
  75 };
  76
  77 static struct platform_device acx_device = {
  78         .name   = "acx-mem",
  79         .dev    = {
  80                 .platform_data = &acx_data,
  81         },
  82         .num_resources  = ARRAY_SIZE( acx_resources ),
  83         .resource       = acx_resources,
  84 };
  85
  86 static int __init
  87 htcuniversal_wlan_init( void )
  88 {
  89         printk( "htcuniversal_wlan_init: acx-mem platform_device_register\n" );
  90         acx_device.resource[1].start = asic3_irq_base(&htcuniversal_asic3.dev) + ASIC3_GPIOC_IRQ_BASE+GPIOC_WIFI_IRQ_N;
  91         acx_device.resource[1].end = asic3_irq_base(&htcuniversal_asic3.dev) + ASIC3_GPIOC_IRQ_BASE+GPIOC_WIFI_IRQ_N;
  92         return platform_device_register( &acx_device );
  93 }
  94
  95
  96 static void __exit
  97 htcuniversal_wlan_exit( void )
  98 {
  99         platform_device_unregister( &acx_device );
 100 }
 101
 102 module_init( htcuniversal_wlan_init );
 103 module_exit( htcuniversal_wlan_exit );
 104
 105 MODULE_AUTHOR( "Todd Blumer <todd@sdgsystems.com>" );
 106 MODULE_DESCRIPTION( "WLAN driver for HTC Universal" );
 107 MODULE_LICENSE( "GPL" );
 108