my __init is called but not getting call for probe - module

Question

I am enabling the pinctrl driver in the raspberry linux and I tried something and enabled it.
But what happened is, the __init is calling but the probe is not calling by the linux.
My code is
this is the probe
static int bcm2835_pinctrl_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct bcm2835_pinctrl *pc;
struct resource iomem;
int err, i;
BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_pins) != BCM2835_NUM_GPIOS);
BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_groups) != BCM2835_NUM_GPIOS);
pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
if (!pc)
return -ENOMEM;
platform_set_drvdata(pdev, pc);
pc->dev = dev;
err = of_address_to_resource(np, 0, &iomem);
if (err) {
dev_err(dev, "could not get IO memory\n");
return err;
}
pc->base = devm_ioremap_resource(dev, &iomem);
if (IS_ERR(pc->base))
return PTR_ERR(pc->base);
pc->gpio_chip = bcm2835_gpio_chip;
pc->gpio_chip.dev = dev;
pc->irq_domain = irq_domain_add_linear(np, BCM2835_NUM_GPIOS,
&irq_domain_simple_ops, NULL);
if (!pc->irq_domain) {
dev_err(dev, "could not create IRQ domain\n");
return -ENOMEM;
}
for (i = 0; i < BCM2835_NUM_GPIOS; i++) {
int irq = irq_create_mapping(pc->irq_domain, i);
irq_set_lockdep_class(irq, &gpio_lock_class);
irq_set_chip_and_handler(irq, &bcm2835_gpio_irq_chip,
handle_simple_irq);
irq_set_chip_data(irq, pc);
set_irq_flags(irq, IRQF_VALID);
}
for (i = 0; i < BCM2835_NUM_BANKS; i++) {
unsigned long events;
unsigned offset;
int len;
char *name;
/* clear event detection flags */
bcm2835_gpio_wr(pc, GPREN0 + i * 4, 0);
bcm2835_gpio_wr(pc, GPFEN0 + i * 4, 0);
bcm2835_gpio_wr(pc, GPHEN0 + i * 4, 0);
bcm2835_gpio_wr(pc, GPLEN0 + i * 4, 0);
bcm2835_gpio_wr(pc, GPAREN0 + i * 4, 0);
bcm2835_gpio_wr(pc, GPAFEN0 + i * 4, 0);
/* clear all the events */
events = bcm2835_gpio_rd(pc, GPEDS0 + i * 4);
for_each_set_bit(offset, &events, 32)
bcm2835_gpio_wr(pc, GPEDS0 + i * 4, BIT(offset));
pc->irq[i] = irq_of_parse_and_map(np, i);
pc->irq_data[i].pc = pc;
pc->irq_data[i].bank = i;
spin_lock_init(&pc->irq_lock[i]);
len = strlen(dev_name(pc->dev)) + 16;
name = devm_kzalloc(pc->dev, len, GFP_KERNEL);
if (!name)
return -ENOMEM;
snprintf(name, len, "%s:bank%d", dev_name(pc->dev), i);
err = devm_request_irq(dev, pc->irq[i],
bcm2835_gpio_irq_handler, IRQF_SHARED,
name, &pc->irq_data[i]);
if (err) {
dev_err(dev, "unable to request IRQ %d\n", pc->irq[i]);
return err;
}
}
err = gpiochip_add(&pc->gpio_chip);
if (err) {
dev_err(dev, "could not add GPIO chip\n");
return err;
}
pc->pctl_dev = pinctrl_register(&bcm2835_pinctrl_desc, dev, pc);
if (!pc->pctl_dev) {
err = gpiochip_remove(&pc->gpio_chip);
return err;
}
pc->gpio_range = bcm2835_pinctrl_gpio_range;
pc->gpio_range.base = pc->gpio_chip.base;
pc->gpio_range.gc = &pc->gpio_chip;
pinctrl_add_gpio_range(pc->pctl_dev, &pc->gpio_range);
return 0;
}
static struct of_device_id bcm2835_pinctrl_match[] = {
{ .compatible = "brcm,bcm2835-gpio" },
{}
};
MODULE_DEVICE_TABLE(of, bcm2835_pinctrl_match);
static struct platform_driver bcm2835_pinctrl_driver = {
.probe = bcm2835_pinctrl_probe,
.remove = bcm2835_pinctrl_remove,
.driver = {
.name = MODULE_NAME,
.owner = THIS_MODULE,
.of_match_table = bcm2835_pinctrl_match,
},
};
static int __init bcm2835_pinctrl_init(void)
{
return platform_driver_register(&bcm2835_pinctrl_driver);
}
static void __exit bcm2835_pinctrl_exit(void)
{
platform_driver_unregister(&bcm2835_pinctrl_driver);
}
module_init(bcm2835_pinctrl_init);
module_exit(bcm2835_pinctrl_exit);
MODULE_AUTHOR("Chris Boot, Simon Arlott, Stephen Warren");
MODULE_DESCRIPTION("BCM2835 Pin control driver");
MODULE_LICENSE("GPL");
Can anyone help me out this?
I am not getting where i did wrong and why the probe is not calling?

Answer 1

The solution for this problem is that i forgot to add the driver structure in the board file.
After adding that i am getting call to the probe