arch/arm/mach-davinci/usb-da8xx.c

   1 /*
   2  * DA8xx USB
   3  */
   4 #include <linux/dma-mapping.h>
   5 #include <linux/init.h>
   6 #include <linux/platform_data/usb-davinci.h>
   7 #include <linux/platform_device.h>
   8 #include <linux/usb/musb.h>
   9
  10 #include <mach/common.h>
  11 #include <mach/cputype.h>
  12 #include <mach/da8xx.h>
  13 #include <mach/irqs.h>
  14
  15 #define DA8XX_USB0_BASE         0x01e00000
  16 #define DA8XX_USB1_BASE         0x01e25000
  17
  18 #if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
  19
  20 static struct musb_hdrc_config musb_config = {
  21         .multipoint     = true,
  22         .num_eps        = 5,
  23         .ram_bits       = 10,
  24 };
  25
  26 static struct musb_hdrc_platform_data usb_data = {
  27         /* OTG requires a Mini-AB connector */
  28         .mode           = MUSB_OTG,
  29         .clock          = "usb20",
  30         .config         = &musb_config,
  31 };
  32
  33 static struct resource da8xx_usb20_resources[] = {
  34         {
  35                 .start          = DA8XX_USB0_BASE,
  36                 .end            = DA8XX_USB0_BASE + SZ_64K - 1,
  37                 .flags          = IORESOURCE_MEM,
  38         },
  39         {
  40                 .start          = IRQ_DA8XX_USB_INT,
  41                 .flags          = IORESOURCE_IRQ,
  42                 .name           = "mc",
  43         },
  44 };
  45
  46 static u64 usb_dmamask = DMA_BIT_MASK(32);
  47
  48 static struct platform_device usb_dev = {
  49         .name           = "musb-da8xx",
  50         .id             = -1,
  51         .dev = {
  52                 .platform_data          = &usb_data,
  53                 .dma_mask               = &usb_dmamask,
  54                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  55         },
  56         .resource       = da8xx_usb20_resources,
  57         .num_resources  = ARRAY_SIZE(da8xx_usb20_resources),
  58 };
  59
  60 int __init da8xx_register_usb20(unsigned int mA, unsigned int potpgt)
  61 {
  62         usb_data.power  = mA > 510 ? 255 : mA / 2;
  63         usb_data.potpgt = (potpgt + 1) / 2;
  64
  65         return platform_device_register(&usb_dev);
  66 }
  67
  68 #else
  69
  70 int __init da8xx_register_usb20(unsigned int mA, unsigned int potpgt)
  71 {
  72         return 0;
  73 }
  74
  75 #endif  /* CONFIG_USB_MUSB_HDRC */
  76
  77 static struct resource da8xx_usb11_resources[] = {
  78         [0] = {
  79                 .start  = DA8XX_USB1_BASE,
  80                 .end    = DA8XX_USB1_BASE + SZ_4K - 1,
  81                 .flags  = IORESOURCE_MEM,
  82         },
  83         [1] = {
  84                 .start  = IRQ_DA8XX_IRQN,
  85                 .end    = IRQ_DA8XX_IRQN,
  86                 .flags  = IORESOURCE_IRQ,
  87         },
  88 };
  89
  90 static u64 da8xx_usb11_dma_mask = DMA_BIT_MASK(32);
  91
  92 static struct platform_device da8xx_usb11_device = {
  93         .name           = "ohci",
  94         .id             = 0,
  95         .dev = {
  96                 .dma_mask               = &da8xx_usb11_dma_mask,
  97                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  98         },
  99         .num_resources  = ARRAY_SIZE(da8xx_usb11_resources),
 100         .resource       = da8xx_usb11_resources,
 101 };
 102
 103 int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
 104 {
 105         da8xx_usb11_device.dev.platform_data = pdata;
 106         return platform_device_register(&da8xx_usb11_device);
 107 }