1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Routines common to most mpc85xx-based boards. 4 */ 5 6 #include <linux/of.h> 7 #include <linux/of_irq.h> 8 #include <linux/of_platform.h> 9 10 #include <asm/fsl_pm.h> 11 #include <soc/fsl/qe/qe.h> 12 #include <sysdev/cpm2_pic.h> 13 14 #include "mpc85xx.h" 15 16 const struct fsl_pm_ops *qoriq_pm_ops; 17 18 static const struct of_device_id mpc85xx_common_ids[] __initconst = { 19 { .type = "soc", }, 20 { .compatible = "soc", }, 21 { .compatible = "simple-bus", }, 22 { .name = "cpm", }, 23 { .name = "localbus", }, 24 { .compatible = "gianfar", }, 25 { .compatible = "fsl,qe", }, 26 { .compatible = "fsl,cpm2", }, 27 { .compatible = "fsl,srio", }, 28 /* So that the DMA channel nodes can be probed individually: */ 29 { .compatible = "fsl,eloplus-dma", }, 30 /* For the PMC driver */ 31 { .compatible = "fsl,mpc8548-guts", }, 32 /* Probably unnecessary? */ 33 { .compatible = "gpio-leds", }, 34 /* For all PCI controllers */ 35 { .compatible = "fsl,mpc8540-pci", }, 36 { .compatible = "fsl,mpc8548-pcie", }, 37 { .compatible = "fsl,p1022-pcie", }, 38 { .compatible = "fsl,p1010-pcie", }, 39 { .compatible = "fsl,p1023-pcie", }, 40 { .compatible = "fsl,p4080-pcie", }, 41 { .compatible = "fsl,qoriq-pcie-v2.4", }, 42 { .compatible = "fsl,qoriq-pcie-v2.3", }, 43 { .compatible = "fsl,qoriq-pcie-v2.2", }, 44 { .compatible = "fsl,fman", }, 45 {}, 46 }; 47 48 int __init mpc85xx_common_publish_devices(void) 49 { 50 return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL); 51 } 52 #ifdef CONFIG_CPM2 53 static void cpm2_cascade(struct irq_desc *desc) 54 { 55 struct irq_chip *chip = irq_desc_get_chip(desc); 56 int cascade_irq; 57 58 while ((cascade_irq = cpm2_get_irq()) >= 0) 59 generic_handle_irq(cascade_irq); 60 61 chip->irq_eoi(&desc->irq_data); 62 } 63 64 65 void __init mpc85xx_cpm2_pic_init(void) 66 { 67 struct device_node *np; 68 int irq; 69 70 /* Setup CPM2 PIC */ 71 np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic"); 72 if (np == NULL) { 73 printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); 74 return; 75 } 76 irq = irq_of_parse_and_map(np, 0); 77 if (!irq) { 78 of_node_put(np); 79 printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n"); 80 return; 81 } 82 83 cpm2_pic_init(np); 84 of_node_put(np); 85 irq_set_chained_handler(irq, cpm2_cascade); 86 } 87 #endif 88 89 #ifdef CONFIG_QUICC_ENGINE 90 void __init mpc85xx_qe_par_io_init(void) 91 { 92 struct device_node *np; 93 94 np = of_find_node_by_name(NULL, "par_io"); 95 if (np) { 96 struct device_node *ucc; 97 98 par_io_init(np); 99 of_node_put(np); 100 101 for_each_node_by_name(ucc, "ucc") 102 par_io_of_config(ucc); 103 104 } 105 } 106 #endif 107