mfd: ab8500-debugfs: Allow number of IRQs to be provided more dynamically
With the introduction of new AB* platforms, it's important to allow
as much code reuse as possible. By allowing a system's number of IRQs
to be dynamically passed, we can reuse almost all of the -debugfs
driver.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index af6f774..8617b13 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -94,10 +94,11 @@
static int irq_first;
static int irq_last;
-static u32 irq_count[AB8500_NR_IRQS];
+static u32 *irq_count;
+static int num_irqs;
-static struct device_attribute *dev_attr[AB8500_NR_IRQS];
-static char *event_name[AB8500_NR_IRQS];
+static struct device_attribute **dev_attr;
+static char **event_name;
/**
* struct ab8500_reg_range
@@ -483,7 +484,7 @@
struct kobject *kobj = (struct kobject *)data;
unsigned int irq_abb = irq - irq_first;
- if (irq_abb < AB8500_NR_IRQS)
+ if (irq_abb < num_irqs)
irq_count[irq_abb]++;
/*
* This makes it possible to use poll for events (POLLPRI | POLLERR)
@@ -1340,7 +1341,7 @@
return err;
irq_index = name - irq_first;
- if (irq_index >= AB8500_NR_IRQS)
+ if (irq_index >= num_irqs)
return -EINVAL;
else
return sprintf(buf, "%u\n", irq_count[irq_index]);
@@ -1376,7 +1377,7 @@
}
irq_index = user_val - irq_first;
- if (irq_index >= AB8500_NR_IRQS)
+ if (irq_index >= num_irqs)
return -EINVAL;
/*
@@ -1440,7 +1441,7 @@
}
irq_index = user_val - irq_first;
- if (irq_index >= AB8500_NR_IRQS)
+ if (irq_index >= num_irqs)
return -EINVAL;
/* Set irq count to 0 when unsubscribe */
@@ -1521,21 +1522,40 @@
static int ab8500_debug_probe(struct platform_device *plf)
{
struct dentry *file;
+ int ret = -ENOMEM;
+ struct ab8500 *ab8500;
debug_bank = AB8500_MISC;
debug_address = AB8500_REV_REG & 0x00FF;
+ ab8500 = dev_get_drvdata(plf->dev.parent);
+ num_irqs = ab8500->mask_size;
+
+ irq_count = kzalloc(sizeof(irq_count)*num_irqs, GFP_KERNEL);
+ if (!irq_count)
+ return -ENOMEM;
+
+ dev_attr = kzalloc(sizeof(*dev_attr)*num_irqs,GFP_KERNEL);
+ if (!dev_attr)
+ goto out_freeirq_count;
+
+ event_name = kzalloc(sizeof(*event_name)*num_irqs, GFP_KERNEL);
+ if (!event_name)
+ goto out_freedev_attr;
+
irq_first = platform_get_irq_byname(plf, "IRQ_FIRST");
if (irq_first < 0) {
dev_err(&plf->dev, "First irq not found, err %d\n",
irq_first);
- return irq_first;
+ ret = irq_first;
+ goto out_freeevent_name;
}
irq_last = platform_get_irq_byname(plf, "IRQ_LAST");
if (irq_last < 0) {
dev_err(&plf->dev, "Last irq not found, err %d\n",
irq_last);
- return irq_last;
+ ret = irq_last;
+ goto out_freeevent_name;
}
ab8500_dir = debugfs_create_dir(AB8500_NAME_STRING, NULL);
@@ -1658,12 +1678,23 @@
if (ab8500_dir)
debugfs_remove_recursive(ab8500_dir);
dev_err(&plf->dev, "failed to create debugfs entries.\n");
- return -ENOMEM;
+out_freeevent_name:
+ kfree(event_name);
+out_freedev_attr:
+ kfree(dev_attr);
+out_freeirq_count:
+ kfree(irq_count);
+
+ return ret;
}
static int ab8500_debug_remove(struct platform_device *plf)
{
debugfs_remove_recursive(ab8500_dir);
+ kfree(event_name);
+ kfree(dev_attr);
+ kfree(irq_count);
+
return 0;
}