From: Thierry Reding <treding@xxxxxxxxxx>
Obtains the register ranges for the legacy interrupt controller from DT
and provide hard-coded values as fallback.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/soc/tegra/iomap.h | 18 ------------
drivers/soc/tegra/irq.c | 75 ++++++++++++++++++++++++++++++++++++-----------
2 files changed, 58 insertions(+), 35 deletions(-)
diff --git a/drivers/soc/tegra/iomap.h b/drivers/soc/tegra/iomap.h
index ee79808e93a3..52bbb5c8fe84 100644
--- a/drivers/soc/tegra/iomap.h
+++ b/drivers/soc/tegra/iomap.h
@@ -28,24 +28,6 @@
#define TEGRA_ARM_PERIF_BASE 0x50040000
#define TEGRA_ARM_PERIF_SIZE SZ_8K
-#define TEGRA_ARM_INT_DIST_BASE 0x50041000
-#define TEGRA_ARM_INT_DIST_SIZE SZ_4K
-
-#define TEGRA_PRIMARY_ICTLR_BASE 0x60004000
-#define TEGRA_PRIMARY_ICTLR_SIZE SZ_64
-
-#define TEGRA_SECONDARY_ICTLR_BASE 0x60004100
-#define TEGRA_SECONDARY_ICTLR_SIZE SZ_64
-
-#define TEGRA_TERTIARY_ICTLR_BASE 0x60004200
-#define TEGRA_TERTIARY_ICTLR_SIZE SZ_64
-
-#define TEGRA_QUATERNARY_ICTLR_BASE 0x60004300
-#define TEGRA_QUATERNARY_ICTLR_SIZE SZ_64
-
-#define TEGRA_QUINARY_ICTLR_BASE 0x60004400
-#define TEGRA_QUINARY_ICTLR_SIZE SZ_64
-
#define TEGRA_TMR1_BASE 0x60005000
#define TEGRA_TMR1_SIZE SZ_8
diff --git a/drivers/soc/tegra/irq.c b/drivers/soc/tegra/irq.c
index 57807a79f5fd..6e04140986b7 100644
--- a/drivers/soc/tegra/irq.c
+++ b/drivers/soc/tegra/irq.c
@@ -27,8 +27,6 @@
#include <linux/irqchip/arm-gic.h>
#include <linux/syscore_ops.h>
-#include "iomap.h"
-
#define ICTLR_CPU_IEP_VFIQ 0x08
#define ICTLR_CPU_IEP_FIR 0x14
#define ICTLR_CPU_IEP_FIR_SET 0x18
@@ -51,13 +49,7 @@
static int num_ictlrs;
-static void __iomem *ictlr_reg_base[] = {
- IO_ADDRESS(TEGRA_PRIMARY_ICTLR_BASE),
- IO_ADDRESS(TEGRA_SECONDARY_ICTLR_BASE),
- IO_ADDRESS(TEGRA_TERTIARY_ICTLR_BASE),
- IO_ADDRESS(TEGRA_QUATERNARY_ICTLR_BASE),
- IO_ADDRESS(TEGRA_QUINARY_ICTLR_BASE),
-};
+static void __iomem *ictlr_reg_base[] = { NULL, NULL, NULL, NULL, NULL };
#ifdef CONFIG_PM_SLEEP
static u32 cop_ier[TEGRA_MAX_NUM_ICTLRS];
@@ -69,10 +61,11 @@ static u32 ictlr_wake_mask[TEGRA_MAX_NUM_ICTLRS];
static void __iomem *tegra_gic_cpu_base;
#endif
+static void __iomem *distbase;
+
bool tegra_pending_sgi(void)
{
u32 pending_set;
- void __iomem *distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE);
pending_set = readl_relaxed(distbase + GIC_DIST_PENDING_SET);
@@ -254,24 +247,71 @@ static void tegra114_gic_cpu_pm_registration(void)
static void tegra114_gic_cpu_pm_registration(void) { }
#endif
+static struct resource ictlr_regs[] = {
+ { .start = 0x60004000, .end = 0x6000403f, .flags = IORESOURCE_MEM },
+ { .start = 0x60004100, .end = 0x6000413f, .flags = IORESOURCE_MEM },
+ { .start = 0x60004200, .end = 0x6000423f, .flags = IORESOURCE_MEM },
+ { .start = 0x60004300, .end = 0x6000433f, .flags = IORESOURCE_MEM },
+ { .start = 0x60004400, .end = 0x6000443f, .flags = IORESOURCE_MEM },
+};
+
+static const struct of_device_id ictlr_matches[] = {
+ { .compatible = "nvidia,tegra20-ictlr", },
+ { }
+};
+
+static const struct of_device_id gic_matches[] = {
+ { .compatible = "arm,cortex-a15-gic", },
+ { .compatible = "arm,cortex-a9-gic", },
+ { }
+};
+
void __init tegra_init_irq(void)
{
+ struct device_node *np;
+ struct resource res;
int i;
- void __iomem *distbase;
- distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE);
+ np = of_find_matching_node(NULL, ictlr_matches);
+ if (np) {
+ for (i = 0; i < ARRAY_SIZE(ictlr_regs); i++)
+ if (of_address_to_resource(np, i, &res) == 0)
+ ictlr_regs[i] = res;
+
+ of_node_put(np);
+ }
+
+ np = of_find_matching_node(NULL, gic_matches);
+ if (np) {
+ if (of_address_to_resource(np, 0, &res) < 0)
+ res.start = res.end = 0;
+
+ of_node_put(np);
+ }
+
+ if (res.start == 0 || res.end == 0) {
+ res.start = 0x50041000;
+ res.end = 0x50041fff;
+ res.flags = IORESOURCE_MEM;
+ }
+
+ distbase = ioremap_nocache(res.start, resource_size(&res));
num_ictlrs = readl_relaxed(distbase + GIC_DIST_CTR) & 0x1f;
if (num_ictlrs > ARRAY_SIZE(ictlr_reg_base)) {
- WARN(1, "Too many (%d) interrupt controllers found. Maximum is %d.",
+ WARN(1, "Too many (%d) interrupt controllers found. Maximum is %zu.",
num_ictlrs, ARRAY_SIZE(ictlr_reg_base));
num_ictlrs = ARRAY_SIZE(ictlr_reg_base);
}
for (i = 0; i < num_ictlrs; i++) {
- void __iomem *ictlr = ictlr_reg_base[i];
+ struct resource *regs = &ictlr_regs[i];
+ void __iomem *ictlr;
+
+ ictlr = ioremap_nocache(regs->start, resource_size(regs));
writel(~0, ictlr + ICTLR_CPU_IER_CLR);
writel(0, ictlr + ICTLR_CPU_IEP_CLASS);
+ ictlr_reg_base[i] = ictlr;
}
gic_arch_extn.irq_ack = tegra_ack;
@@ -286,9 +326,10 @@ void __init tegra_init_irq(void)
* Check if there is a devicetree present, since the GIC will be
* initialized elsewhere under DT.
*/
- if (!of_have_populated_dt())
- gic_init(0, 29, distbase,
- IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100));
+ if (!of_have_populated_dt()) {
+ void __iomem *cpubase = ioremap_nocache(0x50040000, 0x2000);
+ gic_init(0, 29, distbase, cpubase);
+ }
tegra114_gic_cpu_pm_registration();
}
--
2.0.0
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