@@ -36,6 +36,18 @@ void gic_set_kvm_info(const struct gic_kvm_info *info)
gic_kvm_info = info;
}
+void gic_enable_of_quirks(const struct device_node *np,
+ const struct gic_quirk *quirks, void *data)
+{
+ for (; quirks->desc; quirks++) {
+ if (!of_device_is_compatible(np, quirks->compatible))
+ continue;
+ if (quirks->init(data))
+ pr_info("GIC: enabling workaround for %s\n",
+ quirks->desc);
+ }
+}
+
void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks,
void *data)
{
@@ -23,6 +23,7 @@
struct gic_quirk {
const char *desc;
+ const char *compatible;
bool (*init)(void *data);
u32 iidr;
u32 mask;
@@ -35,6 +36,8 @@ void gic_dist_config(void __iomem *base, int gic_irqs,
void gic_cpu_config(void __iomem *base, void (*sync_access)(void));
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_kvm_info(const struct gic_kvm_info *info);
@@ -1271,6 +1271,11 @@ static void __init gic_of_setup_kvm_info(struct device_node *node)
gic_set_kvm_info(&gic_v3_kvm_info);
}
+static const struct gic_quirk gic_quirks[] = {
+ {
+ }
+};
+
static int __init gic_of_init(struct device_node *node, struct device_node *parent)
{
void __iomem *dist_base;
@@ -1318,6 +1323,8 @@ static int __init gic_of_init(struct device_node *node, struct device_node *pare
if (of_property_read_u64(node, "redistributor-stride", &redist_stride))
redist_stride = 0;
+ gic_enable_of_quirks(node, gic_quirks, &gic_data);
+
err = gic_init_bases(dist_base, rdist_regs, nr_redist_regions,
redist_stride, &node->fwnode);
if (err)
This patch adds support to device tree based quirks based on device tree compatible string. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> --- drivers/irqchip/irq-gic-common.c | 12 ++++++++++++ drivers/irqchip/irq-gic-common.h | 3 +++ drivers/irqchip/irq-gic-v3.c | 7 +++++++ 3 files changed, 22 insertions(+) -- 2.19.2