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
  21 static 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
  33 static struct platform_device bcm63xx_spi_device = {
  34         .id             = -1,
  35         .num_resources  = ARRAY_SIZE(spi_resources),
  36         .resource       = spi_resources,
  37 };
  38
  39 int __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 }