arch/arm/mach-davinci/usb.c

   1 /*
   2  * USB
   3  */
   4 #include <linux/kernel.h>
   5 #include <linux/module.h>
   6 #include <linux/init.h>
   7 #include <linux/platform_device.h>
   8 #include <linux/dma-mapping.h>
   9
  10 #include <linux/usb/musb.h>
  11 #include <linux/usb/otg.h>
  12
  13 #include <mach/common.h>
  14 #include <mach/hardware.h>
  15 #include <mach/irqs.h>
  16
  17 #if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
  18 static struct musb_hdrc_eps_bits musb_eps[] = {
  19         { "ep1_tx", 8, },
  20         { "ep1_rx", 8, },
  21         { "ep2_tx", 8, },
  22         { "ep2_rx", 8, },
  23         { "ep3_tx", 5, },
  24         { "ep3_rx", 5, },
  25         { "ep4_tx", 5, },
  26         { "ep4_rx", 5, },
  27 };
  28
  29 static struct musb_hdrc_config musb_config = {
  30         .multipoint     = true,
  31         .dyn_fifo       = true,
  32         .soft_con       = true,
  33         .dma            = true,
  34
  35         .num_eps        = 5,
  36         .dma_channels   = 8,
  37         .ram_bits       = 10,
  38         .eps_bits       = musb_eps,
  39 };
  40
  41 static struct musb_hdrc_platform_data usb_data = {
  42 #if defined(CONFIG_USB_MUSB_OTG)
  43         /* OTG requires a Mini-AB connector */
  44         .mode           = MUSB_OTG,
  45 #elif defined(CONFIG_USB_MUSB_PERIPHERAL)
  46         .mode           = MUSB_PERIPHERAL,
  47 #elif defined(CONFIG_USB_MUSB_HOST)
  48         .mode           = MUSB_HOST,
  49 #endif
  50         .config         = &musb_config,
  51 };
  52
  53 static struct resource usb_resources[] = {
  54         {
  55                 /* physical address */
  56                 .start          = DAVINCI_USB_OTG_BASE,
  57                 .end            = DAVINCI_USB_OTG_BASE + 0x5ff,
  58                 .flags          = IORESOURCE_MEM,
  59         },
  60         {
  61                 .start          = IRQ_USBINT,
  62                 .flags          = IORESOURCE_IRQ,
  63         },
  64 };
  65
  66 static u64 usb_dmamask = DMA_32BIT_MASK;
  67
  68 static struct platform_device usb_dev = {
  69         .name           = "musb_hdrc",
  70         .id             = -1,
  71         .dev = {
  72                 .platform_data          = &usb_data,
  73                 .dma_mask               = &usb_dmamask,
  74                 .coherent_dma_mask      = DMA_32BIT_MASK,
  75         },
  76         .resource       = usb_resources,
  77         .num_resources  = ARRAY_SIZE(usb_resources),
  78 };
  79
  80 void __init setup_usb(unsigned mA, unsigned potpgt_msec)
  81 {
  82         usb_data.power = mA / 2;
  83         usb_data.potpgt = potpgt_msec / 2;
  84         platform_device_register(&usb_dev);
  85 }
  86
  87 #else
  88
  89 void __init setup_usb(unsigned mA, unsigned potpgt_msec)
  90 {
  91 }
  92
  93 #endif  /* CONFIG_USB_MUSB_HDRC */
  94