diff options
Diffstat (limited to 'drivers/irqchip/irq-loongson-pch-lpc.c')
| -rw-r--r-- | drivers/irqchip/irq-loongson-pch-lpc.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/irqchip/irq-loongson-pch-lpc.c b/drivers/irqchip/irq-loongson-pch-lpc.c index 9b35492fb6be..3a125f3e4287 100644 --- a/drivers/irqchip/irq-loongson-pch-lpc.c +++ b/drivers/irqchip/irq-loongson-pch-lpc.c @@ -15,6 +15,8 @@ #include <linux/kernel.h> #include <linux/syscore_ops.h> +#include "irq-loongson.h" + /* Registers */ #define LPC_INT_CTL 0x00 #define LPC_INT_ENA 0x04 @@ -149,7 +151,7 @@ static int pch_lpc_disabled(struct pch_lpc *priv) (readl(priv->base + LPC_INT_STS) == 0xffffffff); } -static int pch_lpc_suspend(void) +static int pch_lpc_suspend(void *data) { pch_lpc_priv->saved_reg_ctl = readl(pch_lpc_priv->base + LPC_INT_CTL); pch_lpc_priv->saved_reg_ena = readl(pch_lpc_priv->base + LPC_INT_ENA); @@ -157,18 +159,22 @@ static int pch_lpc_suspend(void) return 0; } -static void pch_lpc_resume(void) +static void pch_lpc_resume(void *data) { writel(pch_lpc_priv->saved_reg_ctl, pch_lpc_priv->base + LPC_INT_CTL); writel(pch_lpc_priv->saved_reg_ena, pch_lpc_priv->base + LPC_INT_ENA); writel(pch_lpc_priv->saved_reg_pol, pch_lpc_priv->base + LPC_INT_POL); } -static struct syscore_ops pch_lpc_syscore_ops = { +static const struct syscore_ops pch_lpc_syscore_ops = { .suspend = pch_lpc_suspend, .resume = pch_lpc_resume, }; +static struct syscore pch_lpc_syscore = { + .ops = &pch_lpc_syscore_ops, +}; + int __init pch_lpc_acpi_init(struct irq_domain *parent, struct acpi_madt_lpc_pic *acpi_pchlpc) { @@ -198,8 +204,13 @@ int __init pch_lpc_acpi_init(struct irq_domain *parent, goto iounmap_base; } - priv->lpc_domain = irq_domain_create_linear(irq_handle, LPC_COUNT, - &pch_lpc_domain_ops, priv); + /* + * The LPC interrupt controller is a legacy i8259-compatible device, + * which requires a static 1:1 mapping for IRQs 0-15. + * Use irq_domain_create_legacy to establish this static mapping early. + */ + priv->lpc_domain = irq_domain_create_legacy(irq_handle, LPC_COUNT, 0, 0, + &pch_lpc_domain_ops, priv); if (!priv->lpc_domain) { pr_err("Failed to create IRQ domain\n"); goto free_irq_handle; @@ -215,7 +226,7 @@ int __init pch_lpc_acpi_init(struct irq_domain *parent, pch_lpc_priv = priv; pch_lpc_handle = irq_handle; - register_syscore_ops(&pch_lpc_syscore_ops); + register_syscore(&pch_lpc_syscore); return 0; |