drivers/net/wireless/acx/htcsable_acx.c

   1 /*
   2  * WLAN (TI TNETW1100B) support in the HTC Sable
   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/htcsable-gpio.h>
  23 #include <asm/arch/htcsable-asic.h>
  24 #include <asm/io.h>
  25
  26 #include "acx_hw.h"
  27
  28 #define WLAN_BASE       PXA_CS2_PHYS
  29
  30 /*
  31 off: b15 c8 d3
  32 on: d3 c8 b5 b5-
  33 */
  34
  35 #define GPIO_NR_HTCSABLE_ACX111 111
  36
  37 static int
  38 htcsable_wlan_stop( void );
  39
  40 static int
  41 htcsable_wlan_start( void )
  42 {
  43         printk( "htcsable_wlan_start\n" );
  44
  45   /*asic3_set_gpio_out_c(&htcsable_asic3.dev, 1<<GPIOC_ACX_RESET, 0);*/
  46   asic3_set_gpio_out_c(&htcsable_asic3.dev, 1<<GPIOC_ACX_PWR_3, 1<<GPIOC_ACX_PWR_3); /* related to acx */
  47   SET_HTCSABLE_GPIO(ACX111, 1);
  48         asic3_set_gpio_out_b(&htcsable_asic3.dev, 1<<GPIOB_ACX_PWR_1, 1<<GPIOB_ACX_PWR_1);
  49         asic3_set_gpio_out_d(&htcsable_asic3.dev, 1<<GPIOD_ACX_PWR_2, 1<<GPIOD_ACX_PWR_2);
  50   mdelay(260);
  51   asic3_set_gpio_out_c(&htcsable_asic3.dev, 1<<GPIOC_ACX_RESET, 1<<GPIOC_ACX_RESET);
  52
  53         return 0;
  54 }
  55
  56 static int
  57 htcsable_wlan_stop( void )
  58 {
  59         printk( "htcsable_wlan_stop\n" );
  60         asic3_set_gpio_out_b(&htcsable_asic3.dev, 1<<GPIOB_ACX_PWR_1, 0);
  61         asic3_set_gpio_out_c(&htcsable_asic3.dev, 1<<GPIOC_ACX_RESET, 0);
  62         asic3_set_gpio_out_d(&htcsable_asic3.dev, 1<<GPIOD_ACX_PWR_2, 0);
  63   SET_HTCSABLE_GPIO(ACX111, 0); /* not necessary to power down this one? */
  64         asic3_set_gpio_out_c(&htcsable_asic3.dev, 1<<GPIOC_ACX_PWR_3, 0); /* not necessary to power down this one? */
  65
  66         return 0;
  67 }
  68
  69 static struct resource acx_resources[] = {
  70         [0] = {
  71                 .start  = WLAN_BASE,
  72                 .end    = WLAN_BASE + 0x20,
  73                 .flags  = IORESOURCE_MEM,
  74         },
  75         [1] = {
  76 //              .start  = asic3_irq_base(&htcsable_asic3.dev) + ASIC3_GPIOC_IRQ_BASE+GPIOC_WIFI_IRQ_N,
  77 //              .end    = asic3_irq_base(&htcsable_asic3.dev) + ASIC3_GPIOC_IRQ_BASE+GPIOC_WIFI_IRQ_N,
  78                 .flags  = IORESOURCE_IRQ,
  79         },
  80 };
  81
  82 static struct acx_hardware_data acx_data = {
  83         .start_hw       = htcsable_wlan_start,
  84         .stop_hw        = htcsable_wlan_stop,
  85 };
  86
  87 static struct platform_device acx_device = {
  88         .name   = "acx-mem",
  89         .dev    = {
  90                 .platform_data = &acx_data,
  91         },
  92         .num_resources  = ARRAY_SIZE( acx_resources ),
  93         .resource       = acx_resources,
  94 };
  95
  96 static int __init
  97 htcsable_wlan_init( void )
  98 {
  99         printk( "htcsable_wlan_init: acx-mem platform_device_register\n" );
 100         acx_device.resource[1].start = asic3_irq_base(&htcsable_asic3.dev) + ASIC3_GPIOB_IRQ_BASE+GPIOB_ACX_IRQ_N;
 101         acx_device.resource[1].end = asic3_irq_base(&htcsable_asic3.dev) + ASIC3_GPIOB_IRQ_BASE+GPIOB_ACX_IRQ_N;
 102         return platform_device_register( &acx_device );
 103 }
 104
 105
 106 static void __exit
 107 htcsable_wlan_exit( void )
 108 {
 109         platform_device_unregister( &acx_device );
 110 }
 111
 112 module_init( htcsable_wlan_init );
 113 module_exit( htcsable_wlan_exit );
 114
 115 MODULE_AUTHOR( "Todd Blumer <todd@sdgsystems.com>" );
 116 MODULE_DESCRIPTION( "WLAN driver for HTC Sable" );
 117 MODULE_LICENSE( "GPL" );
 118