kernel/arch/mips/bcm63xx/dev-usb-usbd.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
   7  * Copyright (C) 2012 Kevin Cernekee <cernekee@gmail.com>
   8  * Copyright (C) 2012 Broadcom Corporation
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/kernel.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/dma-mapping.h>
  15 #include <bcm63xx_cpu.h>
  16 #include <bcm63xx_dev_usb_usbd.h>
  17
  18 #define NUM_MMIO                2
  19 #define NUM_IRQ                 7
  20
  21 static struct resource usbd_resources[NUM_MMIO + NUM_IRQ];
  22
  23 static u64 usbd_dmamask = DMA_BIT_MASK(32);
  24
  25 static struct platform_device bcm63xx_usbd_device = {
  26         .name           = "bcm63xx_udc",
  27         .id             = -1,
  28         .num_resources  = ARRAY_SIZE(usbd_resources),
  29         .resource       = usbd_resources,
  30         .dev            = {
  31                 .dma_mask               = &usbd_dmamask,
  32                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  33         },
  34 };
  35
  36 int __init bcm63xx_usbd_register(const struct bcm63xx_usbd_platform_data *pd)
  37 {
  38         const int irq_list[NUM_IRQ] = { IRQ_USBD,
  39                 IRQ_USBD_RXDMA0, IRQ_USBD_TXDMA0,
  40                 IRQ_USBD_RXDMA1, IRQ_USBD_TXDMA1,
  41                 IRQ_USBD_RXDMA2, IRQ_USBD_TXDMA2 };
  42         int i;
  43
  44         if (!BCMCPU_IS_6328() && !BCMCPU_IS_6368())
  45                 return 0;
  46
  47         usbd_resources[0].start = bcm63xx_regset_address(RSET_USBD);
  48         usbd_resources[0].end = usbd_resources[0].start + RSET_USBD_SIZE - 1;
  49         usbd_resources[0].flags = IORESOURCE_MEM;
  50
  51         usbd_resources[1].start = bcm63xx_regset_address(RSET_USBDMA);
  52         usbd_resources[1].end = usbd_resources[1].start + RSET_USBDMA_SIZE - 1;
  53         usbd_resources[1].flags = IORESOURCE_MEM;
  54
  55         for (i = 0; i < NUM_IRQ; i++) {
  56                 struct resource *r = &usbd_resources[NUM_MMIO + i];
  57
  58                 r->start = r->end = bcm63xx_get_irq_number(irq_list[i]);
  59                 r->flags = IORESOURCE_IRQ;
  60         }
  61
  62         platform_device_add_data(&bcm63xx_usbd_device, pd, sizeof(*pd));
  63
  64         return platform_device_register(&bcm63xx_usbd_device);
  65 }