mfd: ab8500-debug: Add wake-up info

Add information regarding what ab interrupt that caused
a wake-up from suspend in <debugfs>/ab8500/interrupts.
Also print the name of the interrupts, not just the numbers.

Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Per FORLIN <per.forlin@stericsson.com>
Tested-by: Mattias WALLIN <mattias.wallin@stericsson.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 30 insertions, 5 deletions

diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index 1e76a2f35066..55d0ff4f5b23 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -80,6 +80,7 @@
 #include <linux/interrupt.h>
 #include <linux/kobject.h>
 #include <linux/slab.h>
+#include <linux/irq.h>
 
 #include <linux/mfd/abx500.h>
 #include <linux/mfd/abx500/ab8500.h>
@@ -803,22 +804,46 @@ static ssize_t ab8500_val_write(struct file *file,
  * Interrupt status
  */
 static u32 num_interrupts[AB8500_MAX_NR_IRQS];
+static u32 num_wake_interrupts[AB8500_MAX_NR_IRQS];
 static int num_interrupt_lines;
 
+bool __attribute__((weak)) suspend_test_wake_cause_interrupt_is_mine(u32 my_int)
+{
+        return false;
+}
+
 void ab8500_debug_register_interrupt(int line)
 {
-        if (line < num_interrupt_lines)
+        if (line < num_interrupt_lines) {
                 num_interrupts[line]++;
+                if (suspend_test_wake_cause_interrupt_is_mine(IRQ_DB8500_AB8500))
+                        num_wake_interrupts[line]++;
+        }
 }
 
 static int ab8500_interrupts_print(struct seq_file *s, void *p)
 {
         int line;
 
-        seq_printf(s, "irq:  number of\n");
+        seq_printf(s, "name: number:  number of: wake:\n");
+
+        for (line = 0; line < num_interrupt_lines; line++) {
+                struct irq_desc *desc = irq_to_desc(line + irq_first);
+                struct irqaction *action = desc->action;
 
-        for (line = 0; line < num_interrupt_lines; line++)
-                seq_printf(s, "%3i:  %6i\n", line, num_interrupts[line]);
+                seq_printf(s, "%3i:  %6i %4i", line,
+                           num_interrupts[line],
+                           num_wake_interrupts[line]);
+
+                if (desc && desc->name)
+                        seq_printf(s, "-%-8s", desc->name);
+                if (action) {
+                        seq_printf(s, "  %s", action->name);
+                        while ((action = action->next) != NULL)
+                                seq_printf(s, ", %s", action->name);
+                }
+                seq_putc(s, '\n');
+        }
 
         return 0;
 }
@@ -1870,7 +1895,7 @@ static int ab8500_debug_probe(struct platform_device *plf)
                 dev_err(&plf->dev, "Last irq not found, err %d\n",
                                 irq_last);
                 ret = irq_last;
-                goto out_freeevent_name;
+                goto out_freeevent_name;
         }
 
         ab8500_dir = debugfs_create_dir(AB8500_NAME_STRING, NULL);