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 14 static 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 {}, 25 }; 26 27 int __init mpc85xx_common_publish_devices(void) 28 { 29 return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL); 30 } 31 #ifdef CONFIG_CPM2 32 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) 33 { 34 struct irq_chip *chip = irq_desc_get_chip(desc); 35 int cascade_irq; 36 37 while ((cascade_irq = cpm2_get_irq()) >= 0) 38 generic_handle_irq(cascade_irq); 39 40 chip->irq_eoi(&desc->irq_data); 41 } 42 43 44 void __init mpc85xx_cpm2_pic_init(void) 45 { 46 struct device_node *np; 47 int irq; 48 49 /* Setup CPM2 PIC */ 50 np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic"); 51 if (np == NULL) { 52 printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); 53 return; 54 } 55 irq = irq_of_parse_and_map(np, 0); 56 if (irq == NO_IRQ) { 57 of_node_put(np); 58 printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n"); 59 return; 60 } 61 62 cpm2_pic_init(np); 63 of_node_put(np); 64 irq_set_chained_handler(irq, cpm2_cascade); 65 } 66 #endif 67