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Subject[PATCH v2 3/9] irq/irq_sim: provide irq_sim_fire_type()
Date
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

Provide a more specialized variant of irq_sim_fire() that allows to
specify the type of the fired interrupt. The type is stored in the
dummy irq context struct via the set_type callback.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
include/linux/irq_sim.h | 9 ++++++++-
kernel/irq/irq_sim.c | 26 ++++++++++++++++++++++----
2 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/include/linux/irq_sim.h b/include/linux/irq_sim.h
index b96c2f752320..647a6c8ffb31 100644
--- a/include/linux/irq_sim.h
+++ b/include/linux/irq_sim.h
@@ -23,6 +23,7 @@ struct irq_sim_work_ctx {

struct irq_sim_irq_ctx {
bool enabled;
+ unsigned int type;
};

struct irq_sim {
@@ -37,7 +38,13 @@ int irq_sim_init(struct irq_sim *sim, unsigned int num_irqs);
int devm_irq_sim_init(struct device *dev, struct irq_sim *sim,
unsigned int num_irqs);
void irq_sim_fini(struct irq_sim *sim);
-void irq_sim_fire(struct irq_sim *sim, unsigned int offset);
+void irq_sim_fire_type(struct irq_sim *sim,
+ unsigned int offset, unsigned int type);
int irq_sim_irqnum(struct irq_sim *sim, unsigned int offset);

+static inline void irq_sim_fire(struct irq_sim *sim, unsigned int offset)
+{
+ irq_sim_fire_type(sim, offset, IRQ_TYPE_DEFAULT);
+}
+
#endif /* _LINUX_IRQ_SIM_H */
diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
index 2bcdbab1bc5a..e3160b5e59b8 100644
--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -25,6 +25,15 @@ static void irq_sim_irqunmask(struct irq_data *data)
irq_ctx->enabled = true;
}

+static int irq_sim_set_type(struct irq_data *data, unsigned int type)
+{
+ struct irq_sim_irq_ctx *irq_ctx = irq_data_get_irq_chip_data(data);
+
+ irq_ctx->type = type;
+
+ return 0;
+}
+
static void irq_sim_handle_irq(struct irq_work *work)
{
struct irq_sim_work_ctx *work_ctx;
@@ -107,6 +116,7 @@ int irq_sim_init(struct irq_sim *sim, unsigned int num_irqs)
sim->chip.name = "irq_sim";
sim->chip.irq_mask = irq_sim_irqmask;
sim->chip.irq_unmask = irq_sim_irqunmask;
+ sim->chip.irq_set_type = irq_sim_set_type;

sim->work_ctx.pending = bitmap_zalloc(num_irqs, GFP_KERNEL);
if (!sim->work_ctx.pending) {
@@ -192,21 +202,29 @@ irq_sim_get_ctx(struct irq_sim *sim, unsigned int offset)
}

/**
- * irq_sim_fire - Enqueue an interrupt.
+ * irq_sim_fire_type - Enqueue an interrupt.
*
* @sim: The interrupt simulator object.
* @offset: Offset of the simulated interrupt which should be fired.
+ * @type: Type of the fired interrupt. Must be one of the following:
+ * IRQ_TYPE_EDGE_RISING, IRQ_TYPE_EDGE_FALLING,
+ * IRQ_TYPE_EDGE_BOTH, IRQ_TYPE_LEVEL_HIGH,
+ * IRQ_TYPE_LEVEL_LOW, IRQ_TYPE_DEFAULT
*/
-void irq_sim_fire(struct irq_sim *sim, unsigned int offset)
+void irq_sim_fire_type(struct irq_sim *sim,
+ unsigned int offset, unsigned int type)
{
struct irq_sim_irq_ctx *ctx = irq_sim_get_ctx(sim, offset);

- if (ctx->enabled) {
+ /* Only care about relevant flags. */
+ type &= IRQ_TYPE_SENSE_MASK;
+
+ if (ctx->enabled && (ctx->type & type)) {
set_bit(offset, sim->work_ctx.pending);
irq_work_queue(&sim->work_ctx.work);
}
}
-EXPORT_SYMBOL_GPL(irq_sim_fire);
+EXPORT_SYMBOL_GPL(irq_sim_fire_type);

/**
* irq_sim_irqnum - Get the allocated number of a dummy interrupt.
--
2.19.1
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