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