[PATCH v8 21/26] irqchip/gic: Add functions to access irq priorities

[Julien Thierry]

Add accessors to the GIC distributor/redistributors priority registers.

Signed-off-by: Julien Thierry <julien.thierry@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
---
 drivers/irqchip/irq-gic-common.c | 10 ++++++++++
 drivers/irqchip/irq-gic-common.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/irqchip/irq-gic-common.c b/drivers/irqchip/irq-gic-common.c
index 3c93c6f..04eadbc 100644
--- a/drivers/irqchip/irq-gic-common.c
+++ b/drivers/irqchip/irq-gic-common.c
@@ -110,6 +110,16 @@ int gic_configure_irq(unsigned int irq, unsigned int type,
 	return ret;
 }
 
+void gic_set_irq_prio(unsigned int irq, void __iomem *base, u8 prio)
+{
+	writeb_relaxed(prio, base + GIC_DIST_PRI + irq);
+}
+
+u8 gic_get_irq_prio(unsigned int irq, void __iomem *base)
+{
+	return readb_relaxed(base + GIC_DIST_PRI + irq);
+}
+
 void gic_dist_config(void __iomem *base, int gic_irqs,
 		     void (*sync_access)(void))
 {
diff --git a/drivers/irqchip/irq-gic-common.h b/drivers/irqchip/irq-gic-common.h
index 97e58fb..f1c6f5a 100644
--- a/drivers/irqchip/irq-gic-common.h
+++ b/drivers/irqchip/irq-gic-common.h
@@ -38,6 +38,8 @@ void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
 		void *data);
 void gic_enable_of_quirks(const struct device_node *np,
 			  const struct gic_quirk *quirks, void *data);
+void gic_set_irq_prio(unsigned int irq, void __iomem *base, u8 prio);
+u8 gic_get_irq_prio(unsigned int irq, void __iomem *base);
 
 void gic_set_kvm_info(const struct gic_kvm_info *info);
 
-- 
1.9.1