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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 
 18 const struct fsl_pm_ops *qoriq_pm_ops;
 19 
 20 static 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 
 50 int __init mpc85xx_common_publish_devices(void)
 51 {
 52         return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL);
 53 }
 54 #ifdef CONFIG_CPM2
 55 static 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 
 67 void __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 == NO_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
 92 void __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 
115 void __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 

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