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Subject[PATCH 19/24] q40kbd: convert to the new platform device interface
Input: q40kbd - convert to the new platform device interface

Do not use platform_device_register_simple() as it is going away,
implement ->probe() and ->remove() functions so manual binding and
unbinding will work with this driver.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---
drivers/input/serio/q40kbd.c | 91 +++++++++++++++++++++++++++----------------
1 files changed, 58 insertions(+), 33 deletions(-)
Index: work/drivers/input/serio/q40kbd.c
===================================================================
--- work.orig/drivers/input/serio/q40kbd.c
+++ work/drivers/input/serio/q40kbd.c
@@ -75,13 +75,13 @@ static irqreturn_t q40kbd_interrupt(int

static void q40kbd_flush(void)
{
- int maxread = 100;
+ int maxread = 100;
unsigned long flags;

spin_lock_irqsave(&q40kbd_lock, flags);

- while (maxread-- && (Q40_IRQ_KEYB_MASK & master_inb(INTERRUPT_REG)))
- master_inb(KEYCODE_REG);
+ while (maxread-- && (Q40_IRQ_KEYB_MASK & master_inb(INTERRUPT_REG)))
+ master_inb(KEYCODE_REG);

spin_unlock_irqrestore(&q40kbd_lock, flags);
}
@@ -97,14 +97,14 @@ static int q40kbd_open(struct serio *por

if (request_irq(Q40_IRQ_KEYBOARD, q40kbd_interrupt, 0, "q40kbd", NULL)) {
printk(KERN_ERR "q40kbd.c: Can't get irq %d.\n", Q40_IRQ_KEYBOARD);
- return -1;
+ return -EBUSY;
}

- /* off we go */
- master_outb(-1, KEYBOARD_UNLOCK_REG);
- master_outb(1, KEY_IRQ_ENABLE_REG);
+ /* off we go */
+ master_outb(-1, KEYBOARD_UNLOCK_REG);
+ master_outb(1, KEY_IRQ_ENABLE_REG);

- return 0;
+ return 0;
}

static void q40kbd_close(struct serio *port)
@@ -116,48 +116,73 @@ static void q40kbd_close(struct serio *p
q40kbd_flush();
}

-static struct serio * __init q40kbd_allocate_port(void)
+static int __devinit q40kbd_probe(struct platform_device *dev)
{
- struct serio *serio;
+ q40kbd_port = kzalloc(sizeof(struct serio), GFP_KERNEL);
+ if (!q40kbd_port)
+ return -ENOMEM;

- serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
- if (serio) {
- memset(serio, 0, sizeof(struct serio));
- serio->id.type = SERIO_8042;
- serio->open = q40kbd_open;
- serio->close = q40kbd_close;
- serio->dev.parent = &q40kbd_device->dev;
- strlcpy(serio->name, "Q40 Kbd Port", sizeof(serio->name));
- strlcpy(serio->phys, "Q40", sizeof(serio->phys));
- }
+ q40kbd_port->id.type = SERIO_8042;
+ q40kbd_port->open = q40kbd_open;
+ q40kbd_port->close = q40kbd_close;
+ q40kbd_port->dev.parent = &dev->dev;
+ strlcpy(q40kbd_port->name, "Q40 Kbd Port", sizeof(q40kbd_port->name));
+ strlcpy(q40kbd_port->phys, "Q40", sizeof(q40kbd_port->phys));
+
+ serio_register_port(q40kbd_port);
+ printk(KERN_INFO "serio: Q40 kbd registered\n");
+
+ return 0;
+}
+
+static int __devexit q40kbd_remove(struct platform_device *dev)
+{
+ serio_unregister_port(q40kbd_port);

- return serio;
+ return 0;
}

+static struct platform_driver q40kbd_driver = {
+ .driver = {
+ .name = "q40kbd",
+ .owner = THIS_MODULE,
+ },
+ .probe = q40kbd_probe,
+ .remove = __devexit_p(q40kbd_remove),
+};
+
static int __init q40kbd_init(void)
{
+ int error;
+
if (!MACH_IS_Q40)
return -EIO;

- q40kbd_device = platform_device_register_simple("q40kbd", -1, NULL, 0);
- if (IS_ERR(q40kbd_device))
- return PTR_ERR(q40kbd_device);
-
- if (!(q40kbd_port = q40kbd_allocate_port())) {
- platform_device_unregister(q40kbd_device);
- return -ENOMEM;
- }
-
- serio_register_port(q40kbd_port);
- printk(KERN_INFO "serio: Q40 kbd registered\n");
+ error = platform_driver_register(&q40kbd_driver);
+ if (error)
+ return error;
+
+ q40kbd_device = platform_device_alloc("q40kbd", -1);
+ if (!q40kbd_device)
+ goto err_unregister_driver;
+
+ error = platform_device_add(q40kbd_device);
+ if (error)
+ goto err_free_device;

return 0;
+
+ err_free_device:
+ platform_device_put(q40kbd_device);
+ err_unregister_driver:
+ platform_driver_unregister(&q40kbd_driver);
+ return error;
}

static void __exit q40kbd_exit(void)
{
- serio_unregister_port(q40kbd_port);
platform_device_unregister(q40kbd_device);
+ platform_driver_unregister(&q40kbd_driver);
}

module_init(q40kbd_init);
-
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