Logo Search packages:      
Sourcecode: linux version File versions  Download package

usb.c

/*
 * USB
 */
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>

#include <linux/usb/musb.h>

#include <mach/common.h>
#include <mach/irqs.h>
#include <mach/cputype.h>
#include <mach/usb.h>

#define DAVINCI_USB_OTG_BASE  0x01c64000

#define DA8XX_USB0_BASE       0x01e00000
#define DA8XX_USB1_BASE       0x01e25000

#if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
static struct musb_hdrc_eps_bits musb_eps[] = {
      { "ep1_tx", 8, },
      { "ep1_rx", 8, },
      { "ep2_tx", 8, },
      { "ep2_rx", 8, },
      { "ep3_tx", 5, },
      { "ep3_rx", 5, },
      { "ep4_tx", 5, },
      { "ep4_rx", 5, },
};

static struct musb_hdrc_config musb_config = {
      .multipoint = true,
      .dyn_fifo   = true,
      .soft_con   = true,
      .dma        = true,

      .num_eps    = 5,
      .dma_channels     = 8,
      .ram_bits   = 10,
      .eps_bits   = musb_eps,
};

static struct musb_hdrc_platform_data usb_data = {
#if defined(CONFIG_USB_MUSB_OTG)
      /* OTG requires a Mini-AB connector */
      .mode           = MUSB_OTG,
#elif defined(CONFIG_USB_MUSB_PERIPHERAL)
      .mode           = MUSB_PERIPHERAL,
#elif defined(CONFIG_USB_MUSB_HOST)
      .mode           = MUSB_HOST,
#endif
      .clock            = "usb",
      .config           = &musb_config,
};

static struct resource usb_resources[] = {
      {
            /* physical address */
            .start          = DAVINCI_USB_OTG_BASE,
            .end            = DAVINCI_USB_OTG_BASE + 0x5ff,
            .flags          = IORESOURCE_MEM,
      },
      {
            .start          = IRQ_USBINT,
            .flags          = IORESOURCE_IRQ,
            .name       = "mc"
      },
      {
            /* placeholder for the dedicated CPPI IRQ */
            .flags          = IORESOURCE_IRQ,
            .name       = "dma"
      },
};

static u64 usb_dmamask = DMA_BIT_MASK(32);

static struct platform_device usb_dev = {
      .name           = "musb-davinci",
      .id             = -1,
      .dev = {
            .platform_data          = &usb_data,
            .dma_mask         = &usb_dmamask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .resource       = usb_resources,
      .num_resources  = ARRAY_SIZE(usb_resources),
};

void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
{
      usb_data.power = mA > 510 ? 255 : mA / 2;
      usb_data.potpgt = (potpgt_ms + 1) / 2;

      if (cpu_is_davinci_dm646x()) {
            /* Override the defaults as DM6467 uses different IRQs. */
            usb_dev.resource[1].start = IRQ_DM646X_USBINT;
            usb_dev.resource[2].start = IRQ_DM646X_USBDMAINT;
      } else      /* other devices don't have dedicated CPPI IRQ */
            usb_dev.num_resources = 2;

      platform_device_register(&usb_dev);
}

#ifdef CONFIG_ARCH_DAVINCI_DA8XX
static struct resource da8xx_usb20_resources[] = {
      {
            .start            = DA8XX_USB0_BASE,
            .end        = DA8XX_USB0_BASE + SZ_64K - 1,
            .flags            = IORESOURCE_MEM,
      },
      {
            .start            = IRQ_DA8XX_USB_INT,
            .flags            = IORESOURCE_IRQ,
            .name       = "mc",
      },
};

int __init da8xx_register_usb20(unsigned mA, unsigned potpgt)
{
      usb_data.clock  = "usb20";
      usb_data.power    = mA > 510 ? 255 : mA / 2;
      usb_data.potpgt = (potpgt + 1) / 2;

      usb_dev.resource = da8xx_usb20_resources;
      usb_dev.num_resources = ARRAY_SIZE(da8xx_usb20_resources);
      usb_dev.name = "musb-da8xx";

      return platform_device_register(&usb_dev);
}
#endif      /* CONFIG_DAVINCI_DA8XX */

#else

void __init davinci_setup_usb(unsigned mA, unsigned potpgt_ms)
{
}

#ifdef CONFIG_ARCH_DAVINCI_DA8XX
int __init da8xx_register_usb20(unsigned mA, unsigned potpgt)
{
      return 0;
}
#endif

#endif  /* CONFIG_USB_MUSB_HDRC */

#ifdef      CONFIG_ARCH_DAVINCI_DA8XX
static struct resource da8xx_usb11_resources[] = {
      [0] = {
            .start      = DA8XX_USB1_BASE,
            .end  = DA8XX_USB1_BASE + SZ_4K - 1,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = IRQ_DA8XX_IRQN,
            .end  = IRQ_DA8XX_IRQN,
            .flags      = IORESOURCE_IRQ,
      },
};

static u64 da8xx_usb11_dma_mask = DMA_BIT_MASK(32);

static struct platform_device da8xx_usb11_device = {
      .name       = "ohci",
      .id         = 0,
      .dev = {
            .dma_mask         = &da8xx_usb11_dma_mask,
            .coherent_dma_mask      = DMA_BIT_MASK(32),
      },
      .num_resources    = ARRAY_SIZE(da8xx_usb11_resources),
      .resource   = da8xx_usb11_resources,
};

int __init da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata)
{
      da8xx_usb11_device.dev.platform_data = pdata;
      return platform_device_register(&da8xx_usb11_device);
}
#endif      /* CONFIG_DAVINCI_DA8XX */

Generated by  Doxygen 1.6.0   Back to index