arch/arm/mach-pxa/asus730/a730_usb.c

   1 /*
   2  * Use consistent with the GNU GPL is permitted,
   3  * provided that this copyright notice is
   4  * preserved in its entirety in all copies and derived works.
   5  *
   6  * History:
   7  *
   8  * 2005-03-26   Markus Wagner           file created
   9  */
  10
  11
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/ioport.h>
  15 #include <linux/device.h>
  16
  17 #include <asm/mach-types.h>
  18 #include <asm/hardware.h>
  19 #include <asm/mach/arch.h>
  20
  21 #include <asm/arch/asus730-init.h>
  22 #include <asm/arch/asus730-gpio.h>
  23 #include <asm/arch/pxa-regs.h>
  24 #include <asm/mach/map.h>
  25 #include <asm/arch/udc.h>
  26 #include <asm/arch/ohci.h>
  27 #include <asm/arch/audio.h>
  28
  29 #include <linux/platform_device.h>
  30
  31 #include "../generic.h"
  32
  33 /* USB host */
  34
  35 static int a730_ohci_init(struct device *dev)
  36 {
  37         printk("%s\n", __FUNCTION__);
  38         UHCHCON = (UHCHCON_HCFS_USBOPERATIONAL | /*UHCHCON_PLE |*/ UHCHCON_CLE | UHCHCON_CBSR41);//0x97 (USBOPERATIONAL | CLE(may be not set?) | PLE | CBSR=0x3)
  39         UHCINTE = (UHCINT_MIE | UHCINT_RHSC | UHCINT_UE | UHCINT_WDH | UHCINT_SO);//0x80000053;// (MIE | RHSC | UE | WDH | SO)
  40         UHCINTD = (UHCINT_MIE | UHCINT_RHSC | UHCINT_UE | UHCINT_WDH | UHCINT_SO);//0x80000053;// (MIE | RHSC | UE | WDH | SO)
  41         UHCFMI = 0x27782edf;
  42         //UHCFMR = 0x2d6b;// (no need to set ?)
  43         //UHCFMN = 0xd1bc;// (no need to set ?)
  44         //intel says typical val is 0x3e67. wince sets to 0x2a2f
  45         UHCPERS = 0x3e67;//0x2a2f
  46         UHCLS = 0x628;// (lsthreshold=0x628)
  47         UHCRHDA = 0x4001a02;// (numberdownstreamports=1 | psm=1 | overcurrentprotection=1 | noovercurrentprotection=1 | powerontopowergoodtime(bit26)=1)
  48         UHCRHDB = 0x0;
  49         UHCRHS = 0x0;
  50         UHCRHPS1 = 0x100;// (port power on)
  51         UHCRHPS2 = 0x100;// (port power on)
  52         UHCRHPS3 = 0x100;// (port power on)
  53         UHCSTAT = 0x0;
  54         UHCHR = (UHCHR_PCPL | UHCHR_CGR);//0x84 (power control polarity low | clock generation reset inactive)
  55         UHCHIE = 0x0;
  56         UHCHIT = 0x0;
  57
  58         SET_A730_GPIO(USB_HOST_EN, 0);
  59
  60         return 0;
  61 }
  62
  63 static void a730_ohci_exit(struct device *dev)
  64 {
  65         printk("%s\n", __FUNCTION__);
  66         SET_A730_GPIO(USB_HOST_EN, 1);
  67 }
  68
  69 static struct pxaohci_platform_data a730_ohci_platform_data = {
  70         .init           = a730_ohci_init,
  71         .exit           = a730_ohci_exit,
  72         .port_mode      = /*PMM_NPS_MODE,//*/PMM_PERPORT_MODE,
  73 };
  74
  75 static int __init a730_usb_init(void)
  76 {
  77         if (!machine_is_a730()) return -ENODEV;
  78
  79         printk("A730: Enabling USB-Host controller\n");
  80
  81         //driver_register(&a730_ohci_driver);
  82         //platform_device_register(&a730_ohci);
  83         //driver_create_file(&a730_ohci_driver, &driver_attr_power);
  84         pxa_set_ohci_info(&a730_ohci_platform_data);
  85
  86         return 0;
  87 }
  88
  89 static void __exit a730_usb_exit(void)
  90 {
  91         printk("A730: Disabling USB-Host controller\n");
  92
  93         //driver_remove_file(&a730_ohci_driver, &driver_attr_power);
  94         //platform_device_unregister(&a730_ohci);
  95         //driver_unregister(&a730_ohci_driver);
  96 }
  97
  98 module_init(a730_usb_init);
  99 module_exit(a730_usb_exit);
 100
 101 MODULE_AUTHOR("Markus Wagner <markus1108wagner@t-online.de");
 102 MODULE_DESCRIPTION("Asus MyPal A730 USB Host status driver");
 103 MODULE_LICENSE("GPL");