Input: wistron - 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 would work.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 68 insertions, 46 deletions

diff --git a/drivers/input/misc/wistron_btns.c b/drivers/input/misc/wistron_btns.c
index b77e2692ba3a..a05b8557842f 100644
--- a/drivers/input/misc/wistron_btns.c
+++ b/drivers/input/misc/wistron_btns.c
@@ -174,7 +174,7 @@ static u16 bios_pop_queue(void)
         return regs.eax;
 }
 
-static void __init bios_attach(void)
+static void __devinit bios_attach(void)
 {
         struct regs regs;
 
@@ -194,7 +194,7 @@ static void bios_detach(void)
         call_bios(&regs);
 }
 
-static u8 __init bios_get_cmos_address(void)
+static u8 __devinit bios_get_cmos_address(void)
 {
         struct regs regs;
 
@@ -206,7 +206,7 @@ static u8 __init bios_get_cmos_address(void)
         return regs.ecx;
 }
 
-static u16 __init bios_get_default_setting(u8 subsys)
+static u16 __devinit bios_get_default_setting(u8 subsys)
 {
         struct regs regs;
 
@@ -367,7 +367,7 @@ static int __init select_keymap(void)
 
 static struct input_dev *input_dev;
 
-static int __init setup_input_dev(void)
+static int __devinit setup_input_dev(void)
 {
         const struct key_entry *key;
         int error;
@@ -466,6 +466,52 @@ static void poll_bios(unsigned long discard)
         mod_timer(&poll_timer, jiffies + HZ / POLL_FREQUENCY);
 }
 
+static int __devinit wistron_probe(struct platform_device *dev)
+{
+        int err = setup_input_dev();
+        if (err)
+                return err;
+
+        bios_attach();
+        cmos_address = bios_get_cmos_address();
+
+        if (have_wifi) {
+                u16 wifi = bios_get_default_setting(WIFI);
+                if (wifi & 1)
+                        wifi_enabled = (wifi & 2) ? 1 : 0;
+                else
+                        have_wifi = 0;
+
+                if (have_wifi)
+                        bios_set_state(WIFI, wifi_enabled);
+        }
+
+        if (have_bluetooth) {
+                u16 bt = bios_get_default_setting(BLUETOOTH);
+                if (bt & 1)
+                        bluetooth_enabled = (bt & 2) ? 1 : 0;
+                else
+                        have_bluetooth = 0;
+
+                if (have_bluetooth)
+                        bios_set_state(BLUETOOTH, bluetooth_enabled);
+        }
+
+        poll_bios(1); /* Flush stale event queue and arm timer */
+
+        return 0;
+}
+
+static int __devexit wistron_remove(struct platform_device *dev)
+{
+        del_timer_sync(&poll_timer);
+        input_unregister_device(input_dev);
+        bios_detach();
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
 static int wistron_suspend(struct platform_device *dev, pm_message_t state)
 {
         del_timer_sync(&poll_timer);
@@ -491,13 +537,20 @@ static int wistron_resume(struct platform_device *dev)
 
         return 0;
 }
+#else
+#define wistron_suspend         NULL
+#define wistron_resume          NULL
+#endif
 
 static struct platform_driver wistron_driver = {
-        .suspend        = wistron_suspend,
-        .resume         = wistron_resume,
         .driver         = {
                 .name   = "wistron-bios",
+                .owner  = THIS_MODULE,
         },
+        .probe          = wistron_probe,
+        .remove         = __devexit_p(wistron_remove),
+        .suspend        = wistron_suspend,
+        .resume         = wistron_resume,
 };
 
 static int __init wb_module_init(void)
@@ -512,55 +565,27 @@ static int __init wb_module_init(void)
         if (err)
                 return err;
 
-        bios_attach();
-        cmos_address = bios_get_cmos_address();
-
         err = platform_driver_register(&wistron_driver);
         if (err)
-                goto err_detach_bios;
+                goto err_unmap_bios;
 
-        wistron_device = platform_device_register_simple("wistron-bios", -1, NULL, 0);
-        if (IS_ERR(wistron_device)) {
-                err = PTR_ERR(wistron_device);
+        wistron_device = platform_device_alloc("wistron-bios", -1);
+        if (!wistron_device) {
+                err = -ENOMEM;
                 goto err_unregister_driver;
         }
 
-        if (have_wifi) {
-                u16 wifi = bios_get_default_setting(WIFI);
-                if (wifi & 1)
-                        wifi_enabled = (wifi & 2) ? 1 : 0;
-                else
-                        have_wifi = 0;
-
-                if (have_wifi)
-                        bios_set_state(WIFI, wifi_enabled);
-        }
-
-        if (have_bluetooth) {
-                u16 bt = bios_get_default_setting(BLUETOOTH);
-                if (bt & 1)
-                        bluetooth_enabled = (bt & 2) ? 1 : 0;
-                else
-                        have_bluetooth = 0;
-
-                if (have_bluetooth)
-                        bios_set_state(BLUETOOTH, bluetooth_enabled);
-        }
-
-        err = setup_input_dev();
+        err = platform_device_add(wistron_device);
         if (err)
-                goto err_unregister_device;
-
-        poll_bios(1); /* Flush stale event queue and arm timer */
+                goto err_free_device;
 
         return 0;
 
- err_unregister_device:
-        platform_device_unregister(wistron_device);
+ err_free_device:
+        platform_device_put(wistron_device);
  err_unregister_driver:
         platform_driver_unregister(&wistron_driver);
- err_detach_bios:
-        bios_detach();
+ err_unmap_bios:
         unmap_bios();
 
         return err;
@@ -568,11 +593,8 @@ static int __init wb_module_init(void)
 
 static void __exit wb_module_exit(void)
 {
-        del_timer_sync(&poll_timer);
-        input_unregister_device(input_dev);
         platform_device_unregister(wistron_device);
         platform_driver_unregister(&wistron_driver);
-        bios_detach();
         unmap_bios();
 }