arm: convert sysdev_class to a regular subsystem

After all sysdev classes are ported to regular driver core entities, the
sysdev implementation will be entirely removed from the kernel.

Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Boojin Kim <boojin.kim@samsung.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

5 files changed, 36 insertions, 28 deletions

diff --git a/arch/arm/mach-s3c2412/cpu-freq.c b/arch/arm/mach-s3c2412/cpu-freq.c
index eb3ea1721335..d8664b7652ce 100644
--- a/arch/arm/mach-s3c2412/cpu-freq.c
+++ b/arch/arm/mach-s3c2412/cpu-freq.c
@@ -16,7 +16,7 @@
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/cpufreq.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
 #include <linux/delay.h>
 #include <linux/clk.h>
 #include <linux/err.h>
@@ -194,7 +194,7 @@ static struct s3c_cpufreq_info s3c2412_cpufreq_info = {
         .debug_io_show  = s3c_cpufreq_debugfs_call(s3c2412_iotiming_debugfs),
 };
 
-static int s3c2412_cpufreq_add(struct sys_device *sysdev)
+static int s3c2412_cpufreq_add(struct device *dev)
 {
         unsigned long fclk_rate;
 
@@ -244,14 +244,15 @@ err_fclk:
         return -ENOENT;
 }
 
-static struct sysdev_driver s3c2412_cpufreq_driver = {
-        .add            = s3c2412_cpufreq_add,
+static struct subsys_interface s3c2412_cpufreq_interface = {
+        .name           = "s3c2412_cpufreq",
+        .subsys         = &s3c2412_subsys,
+        .add_dev        = s3c2412_cpufreq_add,
 };
 
 static int s3c2412_cpufreq_init(void)
 {
-        return sysdev_driver_register(&s3c2412_sysclass,
-                                      &s3c2412_cpufreq_driver);
+        return subsys_interface_register(&s3c2412_cpufreq_interface);
 }
 
 arch_initcall(s3c2412_cpufreq_init);
diff --git a/arch/arm/mach-s3c2412/dma.c b/arch/arm/mach-s3c2412/dma.c
index d2a7d5ef3e67..142acd3b5e15 100644
--- a/arch/arm/mach-s3c2412/dma.c
+++ b/arch/arm/mach-s3c2412/dma.c
@@ -14,7 +14,7 @@
 
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
 #include <linux/serial_core.h>
 #include <linux/io.h>
 
@@ -159,19 +159,21 @@ static struct s3c24xx_dma_selection __initdata s3c2412_dma_sel = {
         .map_size       = ARRAY_SIZE(s3c2412_dma_mappings),
 };
 
-static int __init s3c2412_dma_add(struct sys_device *sysdev)
+static int __init s3c2412_dma_add(struct device *dev)
 {
         s3c2410_dma_init();
         return s3c24xx_dma_init_map(&s3c2412_dma_sel);
 }
 
-static struct sysdev_driver s3c2412_dma_driver = {
-        .add    = s3c2412_dma_add,
+static struct subsys_interface s3c2412_dma_interface = {
+        .name           = "s3c2412_dma",
+        .subsys         = &s3c2412_subsys,
+        .add_dev        = s3c2412_dma_add,
 };
 
 static int __init s3c2412_dma_init(void)
 {
-        return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_dma_driver);
+        return subsys_interface_register(&s3c2412_dma_interface);
 }
 
 arch_initcall(s3c2412_dma_init);
diff --git a/arch/arm/mach-s3c2412/irq.c b/arch/arm/mach-s3c2412/irq.c
index 1a1aa220972b..a8a46c1644f4 100644
--- a/arch/arm/mach-s3c2412/irq.c
+++ b/arch/arm/mach-s3c2412/irq.c
@@ -23,7 +23,7 @@
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
 #include <linux/io.h>
 
 #include <mach/hardware.h>
@@ -170,7 +170,7 @@ static int s3c2412_irq_rtc_wake(struct irq_data *data, unsigned int state)
 
 static struct irq_chip s3c2412_irq_rtc_chip;
 
-static int s3c2412_irq_add(struct sys_device *sysdev)
+static int s3c2412_irq_add(struct device *dev)
 {
         unsigned int irqno;
 
@@ -200,13 +200,15 @@ static int s3c2412_irq_add(struct sys_device *sysdev)
         return 0;
 }
 
-static struct sysdev_driver s3c2412_irq_driver = {
-        .add            = s3c2412_irq_add,
+static struct subsys_interface s3c2412_irq_interface = {
+        .name           = "s3c2412_irq",
+        .subsys         = &s3c2412_subsys,
+        .add_dev        = s3c2412_irq_add,
 };
 
 static int s3c2412_irq_init(void)
 {
-        return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_irq_driver);
+        return subsys_interface_register(&s3c2412_irq_interface);
 }
 
 arch_initcall(s3c2412_irq_init);
diff --git a/arch/arm/mach-s3c2412/pm.c b/arch/arm/mach-s3c2412/pm.c
index f4077efa51fa..fd7210d74db9 100644
--- a/arch/arm/mach-s3c2412/pm.c
+++ b/arch/arm/mach-s3c2412/pm.c
@@ -16,7 +16,7 @@
 #include <linux/list.h>
 #include <linux/timer.h>
 #include <linux/init.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
 #include <linux/syscore_ops.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
@@ -56,7 +56,7 @@ static void s3c2412_pm_prepare(void)
 {
 }
 
-static int s3c2412_pm_add(struct sys_device *sysdev)
+static int s3c2412_pm_add(struct device *dev)
 {
         pm_cpu_prep = s3c2412_pm_prepare;
         pm_cpu_sleep = s3c2412_cpu_suspend;
@@ -87,13 +87,15 @@ static struct sleep_save s3c2412_sleep[] = {
         SAVE_ITEM(S3C2413_GPJSLPCON),
 };
 
-static struct sysdev_driver s3c2412_pm_driver = {
-        .add            = s3c2412_pm_add,
+static struct subsys_interface s3c2412_pm_interface = {
+        .name           = "s3c2412_pm",
+        .subsys         = &s3c2412_subsys,
+        .add_dev        = s3c2412_pm_add,
 };
 
 static __init int s3c2412_pm_init(void)
 {
-        return sysdev_driver_register(&s3c2412_sysclass, &s3c2412_pm_driver);
+        return subsys_interface_register_register(&s3c2412_pm_interface);
 }
 
 arch_initcall(s3c2412_pm_init);
diff --git a/arch/arm/mach-s3c2412/s3c2412.c b/arch/arm/mach-s3c2412/s3c2412.c
index 57a1e01e4e50..6c7253ffc5bc 100644
--- a/arch/arm/mach-s3c2412/s3c2412.c
+++ b/arch/arm/mach-s3c2412/s3c2412.c
@@ -18,7 +18,7 @@
 #include <linux/init.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
-#include <linux/sysdev.h>
+#include <linux/device.h>
 #include <linux/syscore_ops.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
@@ -220,25 +220,26 @@ void __init s3c2412_init_clocks(int xtal)
         s3c2412_baseclk_add();
 }
 
-/* need to register class before we actually register the device, and
+/* need to register the subsystem before we actually register the device, and
  * we also need to ensure that it has been initialised before any of the
  * drivers even try to use it (even if not on an s3c2412 based system)
  * as a driver which may support both 2410 and 2440 may try and use it.
 */
 
-struct sysdev_class s3c2412_sysclass = {
+struct bus_type s3c2412_subsys = {
         .name = "s3c2412-core",
+        .dev_name = "s3c2412-core",
 };
 
 static int __init s3c2412_core_init(void)
 {
-        return sysdev_class_register(&s3c2412_sysclass);
+        return subsys_system_register(&s3c2412_subsys, NULL);
 }
 
 core_initcall(s3c2412_core_init);
 
-static struct sys_device s3c2412_sysdev = {
-        .cls            = &s3c2412_sysclass,
+static struct device s3c2412_dev = {
+        .bus            = &s3c2412_subsys,
 };
 
 int __init s3c2412_init(void)
@@ -250,5 +251,5 @@ int __init s3c2412_init(void)
 #endif
         register_syscore_ops(&s3c24xx_irq_syscore_ops);
 
-        return sysdev_register(&s3c2412_sysdev);
+        return device_register(&s3c2412_dev);
 }