Commit-ID: 4185315a9ad3d2ae0ee2fdb7e8f2f75a3f3c5e66
Gitweb: http://git.kernel.org/tip/4185315a9ad3d2ae0ee2fdb7e8f2f75a3f3c5e66
Author: Boris BREZILLON <boris.brezillon@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 3 Nov 2014 09:31:00 +0100
Committer: Jason Cooper <jason@xxxxxxxxxxxxxx>
CommitDate: Sun, 9 Nov 2014 04:36:38 +0000
irqchip: atmel-aic: Add irq fixup for RTT block
Signed-off-by: Boris BREZILLON <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/1415003464-29239-2-git-send-email-boris.brezillon@xxxxxxxxxxxxxxxxxx
Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
---
drivers/irqchip/irq-atmel-aic-common.c | 26 ++++++++++++++++++++++++++
drivers/irqchip/irq-atmel-aic-common.h | 2 ++
2 files changed, 28 insertions(+)
diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c
index 6ae3cdee..656cfe3 100644
--- a/drivers/irqchip/irq-atmel-aic-common.c
+++ b/drivers/irqchip/irq-atmel-aic-common.c
@@ -167,6 +167,32 @@ void __init aic_common_rtc_irq_fixup(struct device_node *root)
iounmap(regs);
}
+#define AT91_RTT_MR 0x00 /* Real-time Mode Register */
+#define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */
+#define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */
+
+void __init aic_common_rtt_irq_fixup(struct device_node *root)
+{
+ struct device_node *np;
+ void __iomem *regs;
+
+ /*
+ * The at91sam9263 SoC has 2 instances of the RTT block, hence we
+ * iterate over the DT to find each occurrence.
+ */
+ for_each_compatible_node(np, NULL, "atmel,at91sam9260-rtt") {
+ regs = of_iomap(np, 0);
+ if (!regs)
+ continue;
+
+ writel(readl(regs + AT91_RTT_MR) &
+ ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN),
+ regs + AT91_RTT_MR);
+
+ iounmap(regs);
+ }
+}
+
void __init aic_common_irq_fixup(const struct of_device_id *matches)
{
struct device_node *root = of_find_node_by_path("/");
diff --git a/drivers/irqchip/irq-atmel-aic-common.h b/drivers/irqchip/irq-atmel-aic-common.h
index 90aa00e..603f0a9 100644
--- a/drivers/irqchip/irq-atmel-aic-common.h
+++ b/drivers/irqchip/irq-atmel-aic-common.h
@@ -34,6 +34,8 @@ struct irq_domain *__init aic_common_of_init(struct device_node *node,
void __init aic_common_rtc_irq_fixup(struct device_node *root);
+void __init aic_common_rtt_irq_fixup(struct device_node *root);
+
void __init aic_common_irq_fixup(const struct of_device_id *matches);
#endif /* __IRQ_ATMEL_AIC_COMMON_H */
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|