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 /* 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 {}, 31 }; 32 33 int __init mpc85xx_common_publish_devices(void) 34 { 35 return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL); 36 } 37 #ifdef CONFIG_CPM2 38 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) 39 { 40 struct irq_chip *chip = irq_desc_get_chip(desc); 41 int cascade_irq; 42 43 while ((cascade_irq = cpm2_get_irq()) >= 0) 44 generic_handle_irq(cascade_irq); 45 46 chip->irq_eoi(&desc->irq_data); 47 } 48 49 50 void __init mpc85xx_cpm2_pic_init(void) 51 { 52 struct device_node *np; 53 int irq; 54 55 /* Setup CPM2 PIC */ 56 np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic"); 57 if (np == NULL) { 58 printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); 59 return; 60 } 61 irq = irq_of_parse_and_map(np, 0); 62 if (irq == NO_IRQ) { 63 of_node_put(np); 64 printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n"); 65 return; 66 } 67 68 cpm2_pic_init(np); 69 of_node_put(np); 70 irq_set_chained_handler(irq, cpm2_cascade); 71 } 72 #endif 73