diff options
| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2018-12-10 13:56:31 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-13 17:23:37 +0000 |
| commit | f70fdb42a095d265813d6cc8bd10497d7c592ab6 (patch) | |
| tree | a764e3eee208d8713ab4aabe4a39b9bf0e4d5f90 | |
| parent | 7c813152cf9ba1901a4d621ebba1edbac910095e (diff) | |
irqchip/gic: Add support to device tree based quirks
This patch adds support to device tree based quirks based on
device tree compatible string.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| -rw-r--r-- | drivers/irqchip/irq-gic-common.c | 12 | ||||
| -rw-r--r-- | drivers/irqchip/irq-gic-common.h | 3 | ||||
| -rw-r--r-- | drivers/irqchip/irq-gic-v3.c | 7 |
3 files changed, 22 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic-common.c b/drivers/irqchip/irq-gic-common.c index 01e673c680cd..3c93c6f4d1f1 100644 --- a/drivers/irqchip/irq-gic-common.c +++ b/drivers/irqchip/irq-gic-common.c @@ -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) { diff --git a/drivers/irqchip/irq-gic-common.h b/drivers/irqchip/irq-gic-common.h index 3919cd7c5285..97e58fb6c232 100644 --- a/drivers/irqchip/irq-gic-common.h +++ b/drivers/irqchip/irq-gic-common.h @@ -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); diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 8f87f40c9460..f6f3c15ddcd0 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -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) |