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
   9#include <linux/of_irq.h>
  10#include <linux/of_platform.h>
  11
  12#include <asm/fsl_pm.h>
  13#include <soc/fsl/qe/qe.h>
  14#include <sysdev/cpm2_pic.h>
  15
  16#include "mpc85xx.h"
  17
  18const struct fsl_pm_ops *qoriq_pm_ops;
  19
  20static const struct of_device_id mpc85xx_common_ids[] __initconst = {
  21        { .type = "soc", },
  22        { .compatible = "soc", },
  23        { .compatible = "simple-bus", },
  24        { .name = "cpm", },
  25        { .name = "localbus", },
  26        { .compatible = "gianfar", },
  27        { .compatible = "fsl,qe", },
  28        { .compatible = "fsl,cpm2", },
  29        { .compatible = "fsl,srio", },
  30        /* So that the DMA channel nodes can be probed individually: */
  31        { .compatible = "fsl,eloplus-dma", },
  32        /* For the PMC driver */
  33        { .compatible = "fsl,mpc8548-guts", },
  34        /* Probably unnecessary? */
  35        { .compatible = "gpio-leds", },
  36        /* For all PCI controllers */
  37        { .compatible = "fsl,mpc8540-pci", },
  38        { .compatible = "fsl,mpc8548-pcie", },
  39        { .compatible = "fsl,p1022-pcie", },
  40        { .compatible = "fsl,p1010-pcie", },
  41        { .compatible = "fsl,p1023-pcie", },
  42        { .compatible = "fsl,p4080-pcie", },
  43        { .compatible = "fsl,qoriq-pcie-v2.4", },
  44        { .compatible = "fsl,qoriq-pcie-v2.3", },
  45        { .compatible = "fsl,qoriq-pcie-v2.2", },
  46        { .compatible = "fsl,fman", },
  47        {},
  48};
  49
  50int __init mpc85xx_common_publish_devices(void)
  51{
  52        return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL);
  53}
  54#ifdef CONFIG_CPM2
  55static void cpm2_cascade(struct irq_desc *desc)
  56{
  57        struct irq_chip *chip = irq_desc_get_chip(desc);
  58        int cascade_irq;
  59
  60        while ((cascade_irq = cpm2_get_irq()) >= 0)
  61                generic_handle_irq(cascade_irq);
  62
  63        chip->irq_eoi(&desc->irq_data);
  64}
  65
  66
  67void __init mpc85xx_cpm2_pic_init(void)
  68{
  69        struct device_node *np;
  70        int irq;
  71
  72        /* Setup CPM2 PIC */
  73        np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
  74        if (np == NULL) {
  75                printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
  76                return;
  77        }
  78        irq = irq_of_parse_and_map(np, 0);
  79        if (!irq) {
  80                of_node_put(np);
  81                printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n");
  82                return;
  83        }
  84
  85        cpm2_pic_init(np);
  86        of_node_put(np);
  87        irq_set_chained_handler(irq, cpm2_cascade);
  88}
  89#endif
  90
  91#ifdef CONFIG_QUICC_ENGINE
  92void __init mpc85xx_qe_init(void)
  93{
  94        struct device_node *np;
  95
  96        np = of_find_compatible_node(NULL, NULL, "fsl,qe");
  97        if (!np) {
  98                np = of_find_node_by_name(NULL, "qe");
  99                if (!np) {
 100                        pr_err("%s: Could not find Quicc Engine node\n",
 101                                        __func__);
 102                        return;
 103                }
 104        }
 105
 106        if (!of_device_is_available(np)) {
 107                of_node_put(np);
 108                return;
 109        }
 110
 111        of_node_put(np);
 112
 113}
 114
 115void __init mpc85xx_qe_par_io_init(void)
 116{
 117        struct device_node *np;
 118
 119        np = of_find_node_by_name(NULL, "par_io");
 120        if (np) {
 121                struct device_node *ucc;
 122
 123                par_io_init(np);
 124                of_node_put(np);
 125
 126                for_each_node_by_name(ucc, "ucc")
 127                        par_io_of_config(ucc);
 128
 129        }
 130}
 131#endif
 132