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kernel/linux-imx6_3.14.28/arch/mips/bcm63xx/dev-usb-usbd.c 1.84 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
   * Copyright (C) 2012 Kevin Cernekee <cernekee@gmail.com>
   * Copyright (C) 2012 Broadcom Corporation
   */
  
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/platform_device.h>
  #include <linux/dma-mapping.h>
  #include <bcm63xx_cpu.h>
  #include <bcm63xx_dev_usb_usbd.h>
  
  #define NUM_MMIO		2
  #define NUM_IRQ			7
  
  static struct resource usbd_resources[NUM_MMIO + NUM_IRQ];
  
  static u64 usbd_dmamask = DMA_BIT_MASK(32);
  
  static struct platform_device bcm63xx_usbd_device = {
  	.name		= "bcm63xx_udc",
  	.id		= -1,
  	.num_resources	= ARRAY_SIZE(usbd_resources),
  	.resource	= usbd_resources,
  	.dev		= {
  		.dma_mask		= &usbd_dmamask,
  		.coherent_dma_mask	= DMA_BIT_MASK(32),
  	},
  };
  
  int __init bcm63xx_usbd_register(const struct bcm63xx_usbd_platform_data *pd)
  {
  	const int irq_list[NUM_IRQ] = { IRQ_USBD,
  		IRQ_USBD_RXDMA0, IRQ_USBD_TXDMA0,
  		IRQ_USBD_RXDMA1, IRQ_USBD_TXDMA1,
  		IRQ_USBD_RXDMA2, IRQ_USBD_TXDMA2 };
  	int i;
  
  	if (!BCMCPU_IS_6328() && !BCMCPU_IS_6368())
  		return 0;
  
  	usbd_resources[0].start = bcm63xx_regset_address(RSET_USBD);
  	usbd_resources[0].end = usbd_resources[0].start + RSET_USBD_SIZE - 1;
  	usbd_resources[0].flags = IORESOURCE_MEM;
  
  	usbd_resources[1].start = bcm63xx_regset_address(RSET_USBDMA);
  	usbd_resources[1].end = usbd_resources[1].start + RSET_USBDMA_SIZE - 1;
  	usbd_resources[1].flags = IORESOURCE_MEM;
  
  	for (i = 0; i < NUM_IRQ; i++) {
  		struct resource *r = &usbd_resources[NUM_MMIO + i];
  
  		r->start = r->end = bcm63xx_get_irq_number(irq_list[i]);
  		r->flags = IORESOURCE_IRQ;
  	}
  
  	platform_device_add_data(&bcm63xx_usbd_device, pd, sizeof(*pd));
  
  	return platform_device_register(&bcm63xx_usbd_device);
  }