diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index 277b48b0b6f9cd155737550d0586e9d720cf75f4..580b21095eabcf7043ff99b44bc0f1ecb6db53b9 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -130,6 +130,9 @@
pmu_system_controller: system-controller@10020000 {
compatible = "samsung,exynos3250-pmu", "syscon";
reg = <0x10020000 0x4000>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ interrupt-parent = <&gic>;
};
mipi_phy: video-phy@10020710 {
@@ -184,6 +187,7 @@
compatible = "samsung,exynos3250-rtc";
reg = <0x10070000 0x100>;
interrupts = <0 73 0>, <0 74 0>;
+ interrupt-parent = <&pmu_system_controller>;
status = "disabled";
};
diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
index 76173cacd4501fdd5af0ff061cf6f93e3bd922df..1d21f02723909895c1cfb32167e0b942ad07e956 100644
--- a/arch/arm/boot/dts/exynos4.dtsi
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -152,6 +152,9 @@
pmu_system_controller: system-controller@10020000 {
compatible = "samsung,exynos4210-pmu", "syscon";
reg = <0x10020000 0x4000>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ interrupt-parent = <&gic>;
};
dsi_0: dsi@11C80000 {
@@ -264,6 +267,7 @@
rtc@10070000 {
compatible = "samsung,s3c6410-rtc";
reg = <0x10070000 0x100>;
+ interrupt-parent = <&pmu_system_controller>;
interrupts = <0 44 0>, <0 45 0>;
clocks = <&clock CLK_RTC>;
clock-names = "rtc";
diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 9bb1b0b738f53d2e544baa582faeec5841b16783..72fa2d196629d7dc34a1009b63de14f45f83359f 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -196,6 +196,9 @@
clock-names = "clkout16";
clocks = <&clock CLK_FIN_PLL>;
#clock-cells = <1>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ interrupt-parent = <&gic>;
};
sysreg_system_controller: syscon@10050000 {
@@ -232,6 +235,7 @@
rtc: rtc@101E0000 {
clocks = <&clock CLK_RTC>;
clock-names = "rtc";
+ interrupt-parent = <&pmu_system_controller>;
status = "disabled";
};
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
index 9dc2e9773b30c5f5aaa22e5b3d1c1968bc1dd226..d11a6ab4ecd2105dc4e8214800dedc6f6463effb 100644
--- a/arch/arm/boot/dts/exynos5420.dtsi
+++ b/arch/arm/boot/dts/exynos5420.dtsi
@@ -327,6 +327,7 @@
rtc: rtc@101E0000 {
clocks = <&clock CLK_RTC>;
clock-names = "rtc";
+ interrupt-parent = <&pmu_system_controller>;
status = "disabled";
};
@@ -769,6 +770,9 @@
clock-names = "clkout16";
clocks = <&clock CLK_FIN_PLL>;
#clock-cells = <1>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ interrupt-parent = <&gic>;
};
sysreg_system_controller: syscon@10050000 {
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 9e9dfdfad9d77fd670fd186d61907f503815cde3..f44c2e05c82e36ae3598ebf7ffe60e54a14235cc 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -166,16 +166,14 @@ static void __init exynos_init_io(void)
exynos_map_io();
}
+/*
+ * Apparently, these SoCs are not able to wake-up from suspend using
+ * the PMU. Too bad. Should they suddenly become capable of such a
+ * feat, the matches below should be moved to suspend.c.
+ */
static const struct of_device_id exynos_dt_pmu_match[] = {
- { .compatible = "samsung,exynos3250-pmu" },
- { .compatible = "samsung,exynos4210-pmu" },
- { .compatible = "samsung,exynos4212-pmu" },
- { .compatible = "samsung,exynos4412-pmu" },
- { .compatible = "samsung,exynos4415-pmu" },
- { .compatible = "samsung,exynos5250-pmu" },
{ .compatible = "samsung,exynos5260-pmu" },
{ .compatible = "samsung,exynos5410-pmu" },
- { .compatible = "samsung,exynos5420-pmu" },
{ /*sentinel*/ },
};
@@ -186,9 +184,6 @@ static void exynos_map_pmu(void)
np = of_find_matching_node(NULL, exynos_dt_pmu_match);
if (np)
pmu_base_addr = of_iomap(np, 0);
-
- if (!pmu_base_addr)
- panic("failed to find exynos pmu register\n");
}
static void __init exynos_init_irq(void)
diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c
index 52e2b1a2fddbfcf7485d1c504c4e66cec3609388..7b09e7631245260771674adfc5e1fca160ce4890 100644
--- a/arch/arm/mach-exynos/suspend.c
+++ b/arch/arm/mach-exynos/suspend.c
@@ -18,7 +18,9 @@
#include <linux/syscore_ops.h>
#include <linux/cpu_pm.h>
#include <linux/io.h>
-#include <linux/irqchip/arm-gic.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
#include <linux/err.h>
#include <linux/regulator/machine.h>
@@ -43,8 +45,8 @@
#define EXYNOS5420_CPU_STATE 0x28
/**
- * struct exynos_wkup_irq - Exynos GIC to PMU IRQ mapping
- * @hwirq: Hardware IRQ signal of the GIC
+ * struct exynos_wkup_irq - PMU IRQ to mask mapping
+ * @hwirq: Hardware IRQ signal of the PMU
* @mask: Mask in PMU wake-up mask register
*/
struct exynos_wkup_irq {
@@ -93,14 +95,14 @@ static const struct exynos_wkup_irq exynos3250_wkup_irq[] = {
};
static const struct exynos_wkup_irq exynos4_wkup_irq[] = {
- { 76, BIT(1) }, /* RTC alarm */
- { 77, BIT(2) }, /* RTC tick */
+ { 44, BIT(1) }, /* RTC alarm */
+ { 45, BIT(2) }, /* RTC tick */
{ /* sentinel */ },
};
static const struct exynos_wkup_irq exynos5250_wkup_irq[] = {
- { 75, BIT(1) }, /* RTC alarm */
- { 76, BIT(2) }, /* RTC tick */
+ { 43, BIT(1) }, /* RTC alarm */
+ { 44, BIT(2) }, /* RTC tick */
{ /* sentinel */ },
};
@@ -167,6 +169,113 @@ static int exynos_irq_set_wake(struct irq_data *data, unsigned int state)
return -ENOENT;
}
+static struct irq_chip exynos_pmu_chip = {
+ .name = "PMU",
+ .irq_eoi = irq_chip_eoi_parent,
+ .irq_mask = irq_chip_mask_parent,
+ .irq_unmask = irq_chip_unmask_parent,
+ .irq_retrigger = irq_chip_retrigger_hierarchy,
+ .irq_set_wake = exynos_irq_set_wake,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = irq_chip_set_affinity_parent,
+#endif
+};
+
+static int exynos_pmu_domain_xlate(struct irq_domain *domain,
+ struct device_node *controller,
+ const u32 *intspec,
+ unsigned int intsize,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ if (domain->of_node != controller)
+ return -EINVAL; /* Shouldn't happen, really... */
+ if (intsize != 3)
+ return -EINVAL; /* Not GIC compliant */
+ if (intspec[0] != 0)
+ return -EINVAL; /* No PPI should point to this domain */
+
+ *out_hwirq = intspec[1];
+ *out_type = intspec[2];
+ return 0;
+}
+
+static int exynos_pmu_domain_alloc(struct irq_domain *domain,
+ unsigned int virq,
+ unsigned int nr_irqs, void *data)
+{
+ struct of_phandle_args *args = data;
+ struct of_phandle_args parent_args;
+ irq_hw_number_t hwirq;
+ int i;
+
+ if (args->args_count != 3)
+ return -EINVAL; /* Not GIC compliant */
+ if (args->args[0] != 0)
+ return -EINVAL; /* No PPI should point to this domain */
+
+ hwirq = args->args[1];
+
+ for (i = 0; i < nr_irqs; i++)
+ irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i,
+ &exynos_pmu_chip, NULL);
+
+ parent_args = *args;
+ parent_args.np = domain->parent->of_node;
+ return irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &parent_args);
+}
+
+static struct irq_domain_ops exynos_pmu_domain_ops = {
+ .xlate = exynos_pmu_domain_xlate,
+ .alloc = exynos_pmu_domain_alloc,
+ .free = irq_domain_free_irqs_common,
+};
+
+static int __init exynos_pmu_irq_init(struct device_node *node,
+ struct device_node *parent)
+{
+ struct irq_domain *parent_domain, *domain;
+
+ if (!parent) {
+ pr_err("%s: no parent, giving up\n", node->full_name);
+ return -ENODEV;
+ }
+
+ parent_domain = irq_find_host(parent);
+ if (!parent_domain) {
+ pr_err("%s: unable to obtain parent domain\n", node->full_name);
+ return -ENXIO;
+ }
+
+ pmu_base_addr = of_iomap(node, 0);
+
+ if (!pmu_base_addr) {
+ pr_err("%s: failed to find exynos pmu register\n",
+ node->full_name);
+ return -ENOMEM;
+ }
+
+ domain = irq_domain_add_hierarchy(parent_domain, 0, 0,
+ node, &exynos_pmu_domain_ops,
+ NULL);
+ if (!domain) {
+ iounmap(pmu_base_addr);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+#define EXYNOS_PMU_IRQ(symbol, name) OF_DECLARE_2(irqchip, symbol, name, exynos_pmu_irq_init)
+
+EXYNOS_PMU_IRQ(exynos3250_pmu_irq, "samsung,exynos3250-pmu");
+EXYNOS_PMU_IRQ(exynos4210_pmu_irq, "samsung,exynos4210-pmu");
+EXYNOS_PMU_IRQ(exynos4212_pmu_irq, "samsung,exynos4212-pmu");
+EXYNOS_PMU_IRQ(exynos4412_pmu_irq, "samsung,exynos4412-pmu");
+EXYNOS_PMU_IRQ(exynos4415_pmu_irq, "samsung,exynos4415-pmu");
+EXYNOS_PMU_IRQ(exynos5250_pmu_irq, "samsung,exynos5250-pmu");
+EXYNOS_PMU_IRQ(exynos5420_pmu_irq, "samsung,exynos5420-pmu");
+
static int exynos_cpu_do_idle(void)
{
/* issue the standby signal into the pm unit. */
@@ -615,17 +724,19 @@ static struct syscore_ops exynos_pm_syscore_ops;
void __init exynos_pm_init(void)
{
const struct of_device_id *match;
+ struct device_node *np;
u32 tmp;
- of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match);
- if (!match) {
+ np = of_find_matching_node_and_match(NULL, exynos_pmu_of_device_ids, &match);
+ if (!np) {
pr_err("Failed to find PMU node\n");
return;
}
- pm_data = (struct exynos_pm_data *) match->data;
- /* Platform-specific GIC callback */
- gic_arch_extn.irq_set_wake = exynos_irq_set_wake;
+ if (WARN_ON(!of_find_property(np, "interrupt-controller", NULL)))
+ pr_warn("Outdated DT detected, suspend/resume will NOT work\n");
+
+ pm_data = (struct exynos_pm_data *) match->data;
/* All wakeup disable */
tmp = pmu_raw_readl(S5P_WAKEUP_MASK);