common.c

  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
 16const struct fsl_pm_ops *qoriq_pm_ops;
 17
 18static 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
 48int __init mpc85xx_common_publish_devices(void)
 49{
 50	return of_platform_bus_probe(NULL, mpc85xx_common_ids, NULL);
 51}
 52#ifdef CONFIG_CPM2
 53static 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
 65void __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
 90void __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