release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/bcm63xx/dev-dsp.c

   1 /*
   2  * Broadcom BCM63xx VoIP DSP registration
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * Copyright (C) 2009 Florian Fainelli <florian@openwrt.org>
   9  */
  10
  11 #include <linux/init.h>
  12 #include <linux/kernel.h>
  13 #include <linux/platform_device.h>
  14
  15 #include <bcm63xx_cpu.h>
  16 #include <bcm63xx_dev_dsp.h>
  17 #include <bcm63xx_regs.h>
  18 #include <bcm63xx_io.h>
  19
  20 static struct resource voip_dsp_resources[] = {
  21         {
  22                 .start          = -1, /* filled at runtime */
  23                 .end            = -1, /* filled at runtime */
  24                 .flags          = IORESOURCE_MEM,
  25         },
  26         {
  27                 .start          = -1, /* filled at runtime */
  28                 .flags          = IORESOURCE_IRQ,
  29         },
  30 };
  31
  32 static struct platform_device bcm63xx_voip_dsp_device = {
  33         .name           = "bcm63xx-voip-dsp",
  34         .id             = 0,
  35         .num_resources  = ARRAY_SIZE(voip_dsp_resources),
  36         .resource       = voip_dsp_resources,
  37 };
  38
  39 int __init bcm63xx_dsp_register(const struct bcm63xx_dsp_platform_data *pd)
  40 {
  41         struct bcm63xx_dsp_platform_data *dpd;
  42         u32 val;
  43
  44         /* Get the memory window */
  45         val = bcm_mpi_readl(MPI_CSBASE_REG(pd->cs - 1));
  46         val &= MPI_CSBASE_BASE_MASK;
  47         voip_dsp_resources[0].start = val;
  48         voip_dsp_resources[0].end = val + 0xFFFFFFF;
  49         voip_dsp_resources[1].start = pd->ext_irq;
  50
  51         /* copy given platform data */
  52         dpd = bcm63xx_voip_dsp_device.dev.platform_data;
  53         memcpy(dpd, pd, sizeof (*pd));
  54
  55         return platform_device_register(&bcm63xx_voip_dsp_device);
  56 }