LXR linux/arch/powerpc/platforms/85xx/common.c

   1/*
   2 * Routines common to most mpc85xx-based boards.
   3 *
   4 * This is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 as
   6 * published by the Free Software Foundation.
   7 */
   8#include <linux/of_platform.h>
   9
  10#include <sysdev/cpm2_pic.h>
  11
  12#include "mpc85xx.h"
  13
  14static struct of_device_id __initdata mpc85xx_common_ids[] = {
  15        { .type = "soc", },
  16        { .compatible = "soc", },
  17        { .compatible = "simple-bus", },
  18        { .name = "cpm", },
  19        { .name = "localbus", },
  20        { .compatible = "gianfar", },
  21        { .compatible = "fsl,qe", },
  22        { .compatible = "fsl,cpm2", },
  23        { .compatible = "fsl,srio", },
  24        /* So that the DMA channel nodes can be probed individually: */
  25        { .compatible = "fsl,eloplus-dma", },
  26        /* For the PMC driver */
  27        { .compatible = "fsl,mpc8548-guts", },
  28        /* Probably unnecessary? */
  29        { .compatible = "gpio-leds", },
  30        /* For all PCI controllers */
  31        { .compatible = "fsl,mpc8540-pci", },
  32        { .compatible = "fsl,mpc8548-pcie", },
  33        { .compatible = "fsl,p1022-pcie", },
  34        { .compatible = "fsl,p1010-pcie", },
  35        { .compatible = "fsl,p1023-pcie", },
  36        { .compatible = "fsl,p4080-pcie", },
  37        { .compatible = "fsl,qoriq-pcie-v2.4", },
  38        { .compatible = "fsl,qoriq-pcie-v2.3", },
  39        { .compatible = "fsl,qoriq-pcie-v2.2", },
  40        {},
  41};
  42
  43int __init mpc85xx_common_publish_devices(void)
  44{
  45        return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL);
  46}
  47#ifdef CONFIG_CPM2
  48static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
  49{
  50        struct irq_chip *chip = irq_desc_get_chip(desc);
  51        int cascade_irq;
  52
  53        while ((cascade_irq = cpm2_get_irq()) >= 0)
  54                generic_handle_irq(cascade_irq);
  55
  56        chip->irq_eoi(&desc->irq_data);
  57}
  58
  59
  60void __init mpc85xx_cpm2_pic_init(void)
  61{
  62        struct device_node *np;
  63        int irq;
  64
  65        /* Setup CPM2 PIC */
  66        np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
  67        if (np == NULL) {
  68                printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
  69                return;
  70        }
  71        irq = irq_of_parse_and_map(np, 0);
  72        if (irq == NO_IRQ) {
  73                of_node_put(np);
  74                printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n");
  75                return;
  76        }
  77
  78        cpm2_pic_init(np);
  79        of_node_put(np);
  80        irq_set_chained_handler(irq, cpm2_cascade);
  81}
  82#endif
  83