m68k: amiga - Serial port platform device conversion

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

2 files changed, 38 insertions, 26 deletions

diff --git a/arch/m68k/amiga/platform.c b/arch/m68k/amiga/platform.c
index 269bafc8da17..52aa62da8528 100644
--- a/arch/m68k/amiga/platform.c
+++ b/arch/m68k/amiga/platform.c
@@ -168,6 +168,9 @@ static int __init amiga_init_devices(void)
         if (AMIGAHW_PRESENT(AMI_MOUSE))
                 platform_device_register_simple("amiga-mouse", -1, NULL, 0);
 
+        if (AMIGAHW_PRESENT(AMI_SERIAL))
+                platform_device_register_simple("amiga-serial", -1, NULL, 0);
+
         return 0;
 }
 
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 56b27671adc4..4f8d60c25a98 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -84,6 +84,7 @@ static char *serial_version = "4.30";
 #include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <linux/bitops.h>
+#include <linux/platform_device.h>
 
 #include <asm/setup.h>
 
@@ -1954,29 +1955,16 @@ static const struct tty_operations serial_ops = {
 /*
  * The serial driver boot-time initialization code!
  */
-static int __init rs_init(void)
+static int __init amiga_serial_probe(struct platform_device *pdev)
 {
         unsigned long flags;
         struct serial_state * state;
         int error;
 
-        if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_SERIAL))
-                return -ENODEV;
-
         serial_driver = alloc_tty_driver(1);
         if (!serial_driver)
                 return -ENOMEM;
 
-        /*
-         *  We request SERDAT and SERPER only, because the serial registers are
-         *  too spreaded over the custom register space
-         */
-        if (!request_mem_region(CUSTOM_PHYSADDR+0x30, 4,
-                                "amiserial [Paula]")) {
-                error = -EBUSY;
-                goto fail_put_tty_driver;
-        }
-
         IRQ_ports = NULL;
 
         show_serial_version();
@@ -1998,7 +1986,7 @@ static int __init rs_init(void)
 
         error = tty_register_driver(serial_driver);
         if (error)
-                goto fail_release_mem_region;
+                goto fail_put_tty_driver;
 
         state = rs_table;
         state->magic = SSTATE_MAGIC;
@@ -2050,23 +2038,24 @@ static int __init rs_init(void)
         ciab.ddra |= (SER_DTR | SER_RTS);   /* outputs */
         ciab.ddra &= ~(SER_DCD | SER_CTS | SER_DSR);  /* inputs */
 
+        platform_set_drvdata(pdev, state);
+
         return 0;
 
 fail_free_irq:
         free_irq(IRQ_AMIGA_TBE, state);
 fail_unregister:
         tty_unregister_driver(serial_driver);
-fail_release_mem_region:
-        release_mem_region(CUSTOM_PHYSADDR+0x30, 4);
 fail_put_tty_driver:
         put_tty_driver(serial_driver);
         return error;
 }
 
-static __exit void rs_exit(void) 
+static int __exit amiga_serial_remove(struct platform_device *pdev)
 {
         int error;
-        struct async_struct *info = rs_table[0].info;
+        struct serial_state *state = platform_get_drvdata(pdev);
+        struct async_struct *info = state->info;
 
         /* printk("Unloading %s: version %s\n", serial_name, serial_version); */
         tasklet_kill(&info->tlet);
@@ -2075,19 +2064,38 @@ static __exit void rs_exit(void)
                        error);
         put_tty_driver(serial_driver);
 
-        if (info) {
-          rs_table[0].info = NULL;
-          kfree(info);
-        }
+        rs_table[0].info = NULL;
+        kfree(info);
 
         free_irq(IRQ_AMIGA_TBE, rs_table);
         free_irq(IRQ_AMIGA_RBF, rs_table);
 
-        release_mem_region(CUSTOM_PHYSADDR+0x30, 4);
+        platform_set_drvdata(pdev, NULL);
+
+        return error;
+}
+
+static struct platform_driver amiga_serial_driver = {
+        .remove = __exit_p(amiga_serial_remove),
+        .driver   = {
+                .name   = "amiga-serial",
+                .owner  = THIS_MODULE,
+        },
+};
+
+static int __init amiga_serial_init(void)
+{
+        return platform_driver_probe(&amiga_serial_driver, amiga_serial_probe);
+}
+
+module_init(amiga_serial_init);
+
+static void __exit amiga_serial_exit(void)
+{
+        platform_driver_unregister(&amiga_serial_driver);
 }
 
-module_init(rs_init)
-module_exit(rs_exit)
+module_exit(amiga_serial_exit);
 
 
 #if defined(CONFIG_SERIAL_CONSOLE) && !defined(MODULE)
@@ -2154,3 +2162,4 @@ console_initcall(amiserial_console_init);
 #endif /* CONFIG_SERIAL_CONSOLE && !MODULE */
 
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:amiga-serial");