1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright 2015 Freescale Semiconductor Inc.
8 #define pr_fmt(fmt) "%s: " fmt, __func__
10 #include <linux/kernel.h>
12 #include <linux/of_address.h>
13 #include <linux/fsl/guts.h>
16 #include <asm/fsl_pm.h>
18 static struct ccsr_guts __iomem *guts;
20 static void mpc85xx_irq_mask(int cpu)
25 static void mpc85xx_irq_unmask(int cpu)
30 static void mpc85xx_cpu_die(int cpu)
34 tmp = (mfspr(SPRN_HID0) & ~(HID0_DOZE|HID0_SLEEP)) | HID0_NAP;
35 mtspr(SPRN_HID0, tmp);
48 static void mpc85xx_cpu_up_prepare(int cpu)
53 static void mpc85xx_freeze_time_base(bool freeze)
57 mask = CCSR_GUTS_DEVDISR_TB0 | CCSR_GUTS_DEVDISR_TB1;
59 setbits32(&guts->devdisr, mask);
61 clrbits32(&guts->devdisr, mask);
63 in_be32(&guts->devdisr);
66 static const struct of_device_id mpc85xx_smp_guts_ids[] = {
67 { .compatible = "fsl,mpc8572-guts", },
68 { .compatible = "fsl,p1020-guts", },
69 { .compatible = "fsl,p1021-guts", },
70 { .compatible = "fsl,p1022-guts", },
71 { .compatible = "fsl,p1023-guts", },
72 { .compatible = "fsl,p2020-guts", },
73 { .compatible = "fsl,bsc9132-guts", },
77 static const struct fsl_pm_ops mpc85xx_pm_ops = {
78 .freeze_time_base = mpc85xx_freeze_time_base,
79 .irq_mask = mpc85xx_irq_mask,
80 .irq_unmask = mpc85xx_irq_unmask,
81 .cpu_die = mpc85xx_cpu_die,
82 .cpu_up_prepare = mpc85xx_cpu_up_prepare,
85 int __init mpc85xx_setup_pmc(void)
87 struct device_node *np;
89 np = of_find_matching_node(NULL, mpc85xx_smp_guts_ids);
91 guts = of_iomap(np, 0);
94 pr_err("Could not map guts node address\n");
97 qoriq_pm_ops = &mpc85xx_pm_ops;