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Commit ddba25f1 authored by Linus Walleij's avatar Linus Walleij Committed by Lee Jones
Browse files

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: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@stericsson.com>
parent 1d843a6c

drivers/mfd/ab8500-debugfs.c

+41 −10
Original line number Diff line number Diff line
@@ -94,10 +94,11 @@ static u32 debug_address; 


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 @@ static irqreturn_t ab8500_debug_handler(int irq, void *data) 
	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 @@ static ssize_t show_irq(struct device *dev, 
		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 @@ static ssize_t ab8500_subscribe_write(struct file *file, 
	}



	irq_index = user_val - irq_first;

	if (irq_index >= AB8500_NR_IRQS)

	if (irq_index >= num_irqs)

		return -EINVAL;



	/*
@@ -1440,7 +1441,7 @@ static ssize_t ab8500_unsubscribe_write(struct file *file, 
	}



	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 struct dentry *ab8500_gpadc_dir; 
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 @@ static int ab8500_debug_probe(struct platform_device *plf) 
	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;

}