LXR linux/arch/mips/bcm63xx/dev-spi.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) 2009-2011 Florian Fainelli <florian@openwrt.org>
   7 * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
   8 */
   9
  10#include <linux/init.h>
  11#include <linux/kernel.h>
  12#include <linux/export.h>
  13#include <linux/platform_device.h>
  14#include <linux/err.h>
  15#include <linux/clk.h>
  16
  17#include <bcm63xx_cpu.h>
  18#include <bcm63xx_dev_spi.h>
  19#include <bcm63xx_regs.h>
  20
  21static struct resource spi_resources[] = {
  22        {
  23                .start          = -1, /* filled at runtime */
  24                .end            = -1, /* filled at runtime */
  25                .flags          = IORESOURCE_MEM,
  26        },
  27        {
  28                .start          = -1, /* filled at runtime */
  29                .flags          = IORESOURCE_IRQ,
  30        },
  31};
  32
  33static struct platform_device bcm63xx_spi_device = {
  34        .id             = -1,
  35        .num_resources  = ARRAY_SIZE(spi_resources),
  36        .resource       = spi_resources,
  37};
  38
  39int __init bcm63xx_spi_register(void)
  40{
  41        if (BCMCPU_IS_6328() || BCMCPU_IS_6345())
  42                return -ENODEV;
  43
  44        spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
  45        spi_resources[0].end = spi_resources[0].start;
  46        spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
  47
  48        if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) {
  49                bcm63xx_spi_device.name = "bcm6348-spi",
  50                spi_resources[0].end += BCM_6348_RSET_SPI_SIZE - 1;
  51        }
  52
  53        if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6362() ||
  54                BCMCPU_IS_6368()) {
  55                bcm63xx_spi_device.name = "bcm6358-spi",
  56                spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1;
  57        }
  58
  59        return platform_device_register(&bcm63xx_spi_device);
  60}
  61