OMAP: DSS2: Collect interrupt statistics
Collect interrupt statistics, printable via debugfs:
debugfs/omapdss/dispc_irq
debugfs/omapdss/dsi_irq
The counters are reset when printed.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index 8da5ac42..2bcb124 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -240,6 +240,7 @@
void dsi_exit(void);
void dsi_dump_clocks(struct seq_file *s);
+void dsi_dump_irqs(struct seq_file *s);
void dsi_dump_regs(struct seq_file *s);
void dsi_save_context(void);
@@ -268,6 +269,7 @@
int dispc_init(void);
void dispc_exit(void);
void dispc_dump_clocks(struct seq_file *s);
+void dispc_dump_irqs(struct seq_file *s);
void dispc_dump_regs(struct seq_file *s);
void dispc_irq_handler(void);
void dispc_fake_vsync_irq(void);
@@ -367,4 +369,16 @@
unsigned long rfbi_get_max_tx_rate(void);
int rfbi_init_display(struct omap_dss_device *display);
+
+#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
+static inline void dss_collect_irq_stats(u32 irqstatus, unsigned *irq_arr)
+{
+ int b;
+ for (b = 0; b < 32; ++b) {
+ if (irqstatus & (1 << b))
+ irq_arr[b]++;
+ }
+}
+#endif
+
#endif