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         .clock          = "usb",
  51         .config         = &musb_config,
  52 };
  53
  54 static struct resource usb_resources[] = {
  55         {
  56                 /* physical address */
  57                 .start          = DAVINCI_USB_OTG_BASE,
  58                 .end            = DAVINCI_USB_OTG_BASE + 0x5ff,
  59                 .flags          = IORESOURCE_MEM,
  60         },
  61         {
  62                 .start          = IRQ_USBINT,
  63                 .flags          = IORESOURCE_IRQ,
  64         },
  65 };
  66
  67 static u64 usb_dmamask = DMA_32BIT_MASK;
  68
  69 static struct platform_device usb_dev = {
  70         .name           = "musb_hdrc",
  71         .id             = -1,
  72         .dev = {
  73                 .platform_data          = &usb_data,
  74                 .dma_mask               = &usb_dmamask,
  75                 .coherent_dma_mask      = DMA_32BIT_MASK,
  76         },
  77         .resource       = usb_resources,
  78         .num_resources  = ARRAY_SIZE(usb_resources),
  79 };
  80
  81 void __init setup_usb(unsigned mA, unsigned potpgt_msec)
  82 {
  83         usb_data.power = mA / 2;
  84         usb_data.potpgt = potpgt_msec / 2;
  85         platform_device_register(&usb_dev);
  86 }
  87
  88 #else
  89
  90 void __init setup_usb(unsigned mA, unsigned potpgt_msec)
  91 {
  92 }
  93
  94 #endif  /* CONFIG_USB_MUSB_HDRC */
  95