Input: ams_delta_serio: convert to platform driver

Convert the driver to an "ams-delta-serio" platform driver.  For it to
be used with Amstrad Delta, register an "ams-delta-serio" platform
device from the board init file.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 21 insertions, 13 deletions

diff --git a/drivers/input/serio/ams_delta_serio.c b/drivers/input/serio/ams_delta_serio.c
index 3df501c3421b..a2a7fa19bf49 100644
--- a/drivers/input/serio/ams_delta_serio.c
+++ b/drivers/input/serio/ams_delta_serio.c
@@ -22,15 +22,17 @@
  */
 #include <linux/gpio.h>
 #include <linux/irq.h>
+#include <linux/platform_device.h>
 #include <linux/serio.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 
-#include <asm/mach-types.h>
 #include <mach/board-ams-delta.h>
 
 #include <mach/ams-delta-fiq.h>
 
+#define DRIVER_NAME     "ams-delta-serio"
+
 MODULE_AUTHOR("Matt Callow");
 MODULE_DESCRIPTION("AMS Delta (E3) keyboard port driver");
 MODULE_LICENSE("GPL");
@@ -126,13 +128,10 @@ static const struct gpio ams_delta_gpios[] __initconst_or_module = {
         },
 };
 
-static int __init ams_delta_serio_init(void)
+static int ams_delta_serio_init(struct platform_device *pdev)
 {
         int err;
 
-        if (!machine_is_ams_delta())
-                return -ENODEV;
-
         ams_delta_serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
         if (!ams_delta_serio)
                 return -ENOMEM;
@@ -142,22 +141,22 @@ static int __init ams_delta_serio_init(void)
         ams_delta_serio->close = ams_delta_serio_close;
         strlcpy(ams_delta_serio->name, "AMS DELTA keyboard adapter",
                         sizeof(ams_delta_serio->name));
-        strlcpy(ams_delta_serio->phys, "GPIO/serio0",
+        strlcpy(ams_delta_serio->phys, dev_name(&pdev->dev),
                         sizeof(ams_delta_serio->phys));
+        ams_delta_serio->dev.parent = &pdev->dev;
 
         err = gpio_request_array(ams_delta_gpios,
                                 ARRAY_SIZE(ams_delta_gpios));
         if (err) {
-                pr_err("ams_delta_serio: Couldn't request gpio pins\n");
+                dev_err(&pdev->dev, "Couldn't request gpio pins\n");
                 goto serio;
         }
 
         err = request_irq(gpio_to_irq(AMS_DELTA_GPIO_PIN_KEYBRD_CLK),
                         ams_delta_serio_interrupt, IRQ_TYPE_EDGE_RISING,
-                        "ams-delta-serio", 0);
+                        DRIVER_NAME, 0);
         if (err < 0) {
-                pr_err("ams_delta_serio: couldn't request gpio interrupt %d\n",
-                                gpio_to_irq(AMS_DELTA_GPIO_PIN_KEYBRD_CLK));
+                dev_err(&pdev->dev, "IRQ request failed (%d)\n", err);
                 goto gpio;
         }
         /*
@@ -179,13 +178,22 @@ serio:
         kfree(ams_delta_serio);
         return err;
 }
-module_init(ams_delta_serio_init);
 
-static void __exit ams_delta_serio_exit(void)
+static int ams_delta_serio_exit(struct platform_device *pdev)
 {
         serio_unregister_port(ams_delta_serio);
         free_irq(gpio_to_irq(AMS_DELTA_GPIO_PIN_KEYBRD_CLK), 0);
         gpio_free_array(ams_delta_gpios,
                         ARRAY_SIZE(ams_delta_gpios));
+
+        return 0;
 }
-module_exit(ams_delta_serio_exit);
+
+static struct platform_driver ams_delta_serio_driver = {
+        .probe  = ams_delta_serio_init,
+        .remove = ams_delta_serio_exit,
+        .driver = {
+                .name   = DRIVER_NAME
+        },
+};
+module_platform_driver(ams_delta_serio_driver);