target/linux/brcm63xx/files/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 Florian Fainelli <florian@openwrt.org>
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/platform_device.h>
  12 #include <bcm63xx_cpu.h>
  13 #include <bcm63xx_dev_spi.h>
  14
  15 static struct resource spi_resources[] = {
  16         {
  17                 .start          = -1, /* filled at runtime */
  18                 .end            = -1, /* filled at runtime */
  19                 .flags          = IORESOURCE_MEM,
  20         },
  21         {
  22                 .start          = -1, /* filled at runtime */
  23                 .flags          = IORESOURCE_IRQ,
  24         },
  25 };
  26
  27 static struct bcm63xx_spi_pdata spi_pdata = {
  28         .bus_num                = 0,
  29         .num_chipselect         = 4,
  30         .speed_hz               = 50000000,     /* Fclk */
  31 };
  32
  33 static struct platform_device bcm63xx_spi_device = {
  34         .name           = "bcm63xx_spi",
  35         .id             = 0,
  36         .num_resources  = ARRAY_SIZE(spi_resources),
  37         .resource       = spi_resources,
  38         .dev.pdata      = &spi_pdata;
  39 };
  40
  41 int __init bcm63xx_spi_register(void)
  42 {
  43         spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
  44         spi_resources[0].end = spi_resources[0].start;
  45         spi_resources[0].end += RSET_SPI_SIZE - 1;
  46         spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
  47
  48         /* Fill in platform data */
  49         if (CPU_IS_BCM6338() || CPU_IS_BCM6348()) {
  50                 spi_pdata.msg_fifo_size = SPI_BCM_6338_SPI_MSG_DATA_SIZE;
  51                 spi_pdata.rx_fifo_size = SPI_BCM_6338_SPI_RX_DATA_SIZE;
  52         }
  53
  54         if (CPU_IS_BCM6358()) {
  55                 spi_pdata.msg_fifo_size = SPI_BCM_6358_SPI_MSG_DATA_SIZE;
  56                 spi_pdata.rx_fifo_size =  SPI_BCM_6358_SPI_RX_DATA_SIZE;
  57         }
  58
  59         return platform_device_register(&bcm63xx_spi_device);
  60 }