Merge branch 'akpm' (aka "Andrew's patch-bomb")

Andrew elucidates:
 - First installmeant of MM.  We have a HUGE number of MM patches this
   time.  It's crazy.
 - MAINTAINERS updates
 - backlight updates
 - leds
 - checkpatch updates
 - misc ELF stuff
 - rtc updates
 - reiserfs
 - procfs
 - some misc other bits

* akpm: (124 commits)
  user namespace: make signal.c respect user namespaces
  workqueue: make alloc_workqueue() take printf fmt and args for name
  procfs: add hidepid= and gid= mount options
  procfs: parse mount options
  procfs: introduce the /proc/<pid>/map_files/ directory
  procfs: make proc_get_link to use dentry instead of inode
  signal: add block_sigmask() for adding sigmask to current->blocked
  sparc: make SA_NOMASK a synonym of SA_NODEFER
  reiserfs: don't lock root inode searching
  reiserfs: don't lock journal_init()
  reiserfs: delay reiserfs lock until journal initialization
  reiserfs: delete comments referring to the BKL
  drivers/rtc/interface.c: fix alarm rollover when day or month is out-of-range
  drivers/rtc/rtc-twl.c: add DT support for RTC inside twl4030/twl6030
  drivers/rtc/: remove redundant spi driver bus initialization
  drivers/rtc/rtc-jz4740.c: make jz4740_rtc_driver static
  drivers/rtc/rtc-mc13xxx.c: make mc13xxx_rtc_idtable static
  rtc: convert drivers/rtc/* to use module_platform_driver()
  drivers/rtc/rtc-wm831x.c: convert to devm_kzalloc()
  drivers/rtc/rtc-wm831x.c: remove unused period IRQ handler
  ...

91 files changed, 1172 insertions, 1236 deletions

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 1b75a56ebd0..897a77dfa9d 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -388,6 +388,14 @@ config LEDS_RENESAS_TPU
 	  pin function. The latter to support brightness control.
 	  Brightness control is supported but hardware blinking is not.
 
+config LEDS_TCA6507
+	tristate "LED Support for TCA6507 I2C chip"
+	depends on LEDS_CLASS && I2C
+	help
+	  This option enables support for LEDs connected to TC6507
+	  LED driver chips accessed via the I2C bus.
+	  Driver support brightness control and hardware-assisted blinking.
+
 config LEDS_TRIGGERS
 	bool "LED Trigger support"
 	depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index e4f6bf56888..5c9dc4b000d 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_LEDS_GPIO)			+= leds-gpio.o
 obj-$(CONFIG_LEDS_LP3944)		+= leds-lp3944.o
 obj-$(CONFIG_LEDS_LP5521)		+= leds-lp5521.o
 obj-$(CONFIG_LEDS_LP5523)		+= leds-lp5523.o
+obj-$(CONFIG_LEDS_TCA6507)		+= leds-tca6507.o
 obj-$(CONFIG_LEDS_CLEVO_MAIL)		+= leds-clevo-mail.o
 obj-$(CONFIG_LEDS_HP6XX)		+= leds-hp6xx.o
 obj-$(CONFIG_LEDS_FSG)			+= leds-fsg.o
diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c
index 0810604dc70..4ca00624bd1 100644
--- a/drivers/leds/leds-88pm860x.c
+++ b/drivers/leds/leds-88pm860x.c
@@ -238,17 +238,7 @@ static struct platform_driver pm860x_led_driver = {
 	.remove	= pm860x_led_remove,
 };
 
-static int __devinit pm860x_led_init(void)
-{
-	return platform_driver_register(&pm860x_led_driver);
-}
-module_init(pm860x_led_init);
-
-static void __devexit pm860x_led_exit(void)
-{
-	platform_driver_unregister(&pm860x_led_driver);
-}
-module_exit(pm860x_led_exit);
+module_platform_driver(pm860x_led_driver);
 
 MODULE_DESCRIPTION("LED driver for Marvell PM860x");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
diff --git a/drivers/leds/leds-adp5520.c b/drivers/leds/leds-adp5520.c
index 7ba4c7b5b97..b1400db3f83 100644
--- a/drivers/leds/leds-adp5520.c
+++ b/drivers/leds/leds-adp5520.c
@@ -213,17 +213,7 @@ static struct platform_driver adp5520_led_driver = {
 	.remove		= __devexit_p(adp5520_led_remove),
 };
 
-static int __init adp5520_led_init(void)
-{
-	return platform_driver_register(&adp5520_led_driver);
-}
-module_init(adp5520_led_init);
-
-static void __exit adp5520_led_exit(void)
-{
-	platform_driver_unregister(&adp5520_led_driver);
-}
-module_exit(adp5520_led_exit);
+module_platform_driver(adp5520_led_driver);
 
 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
 MODULE_DESCRIPTION("LEDS ADP5520(01) Driver");
diff --git a/drivers/leds/leds-ams-delta.c b/drivers/leds/leds-ams-delta.c
index 8c00937bf7e..07428357c83 100644
--- a/drivers/leds/leds-ams-delta.c
+++ b/drivers/leds/leds-ams-delta.c
@@ -118,18 +118,7 @@ static struct platform_driver ams_delta_led_driver = {
 	},
 };
 
-static int __init ams_delta_led_init(void)
-{
-	return platform_driver_register(&ams_delta_led_driver);
-}
-
-static void __exit ams_delta_led_exit(void)
-{
-	platform_driver_unregister(&ams_delta_led_driver);
-}
-
-module_init(ams_delta_led_init);
-module_exit(ams_delta_led_exit);
+module_platform_driver(ams_delta_led_driver);
 
 MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>");
 MODULE_DESCRIPTION("Amstrad Delta LED driver");
diff --git a/drivers/leds/leds-asic3.c b/drivers/leds/leds-asic3.c
index 48d9fe61bdf..525a9249283 100644
--- a/drivers/leds/leds-asic3.c
+++ b/drivers/leds/leds-asic3.c
@@ -179,21 +179,9 @@ static struct platform_driver asic3_led_driver = {
 	},
 };
 
-MODULE_ALIAS("platform:leds-asic3");
-
-static int __init asic3_led_init(void)
-{
-	return platform_driver_register(&asic3_led_driver);
-}
-
-static void __exit asic3_led_exit(void)
-{
-	platform_driver_unregister(&asic3_led_driver);
-}
-
-module_init(asic3_led_init);
-module_exit(asic3_led_exit);
+module_platform_driver(asic3_led_driver);
 
 MODULE_AUTHOR("Paul Parsons <lost.distance@yahoo.com>");
 MODULE_DESCRIPTION("HTC ASIC3 LED driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-asic3");
diff --git a/drivers/leds/leds-atmel-pwm.c b/drivers/leds/leds-atmel-pwm.c
index 109c875ea23..800243b6037 100644
--- a/drivers/leds/leds-atmel-pwm.c
+++ b/drivers/leds/leds-atmel-pwm.c
@@ -134,29 +134,18 @@ static int __exit pwmled_remove(struct platform_device *pdev)
 	return 0;
 }
 
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:leds-atmel-pwm");
-
 static struct platform_driver pwmled_driver = {
 	.driver = {
 		.name =		"leds-atmel-pwm",
 		.owner =	THIS_MODULE,
 	},
 	/* REVISIT add suspend() and resume() methods */
+	.probe =	pwmled_probe,
 	.remove =	__exit_p(pwmled_remove),
 };
 
-static int __init modinit(void)
-{
-	return platform_driver_probe(&pwmled_driver, pwmled_probe);
-}
-module_init(modinit);
-
-static void __exit modexit(void)
-{
-	platform_driver_unregister(&pwmled_driver);
-}
-module_exit(modexit);
+module_platform_driver(pwmled_driver);
 
 MODULE_DESCRIPTION("Driver for LEDs with PWM-controlled brightness");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-atmel-pwm");
diff --git a/drivers/leds/leds-bd2802.c b/drivers/leds/leds-bd2802.c
index ea2185531f8..591cbdf5a04 100644
--- a/drivers/leds/leds-bd2802.c
+++ b/drivers/leds/leds-bd2802.c
@@ -688,8 +688,7 @@ static int __devinit bd2802_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, led);
 
 	/* Configure RESET GPIO (L: RESET, H: RESET cancel) */
-	gpio_request(pdata->reset_gpio, "RGB_RESETB");
-	gpio_direction_output(pdata->reset_gpio, 1);
+	gpio_request_one(pdata->reset_gpio, GPIOF_OUT_INIT_HIGH, "RGB_RESETB");
 
 	/* Tacss = min 0.1ms */
 	udelay(100);
@@ -813,17 +812,7 @@ static struct i2c_driver bd2802_i2c_driver = {
 	.id_table	= bd2802_id,
 };
 
-static int __init bd2802_init(void)
-{
-	return i2c_add_driver(&bd2802_i2c_driver);
-}
-module_init(bd2802_init);
-
-static void __exit bd2802_exit(void)
-{
-	i2c_del_driver(&bd2802_i2c_driver);
-}
-module_exit(bd2802_exit);
+module_i2c_driver(bd2802_i2c_driver);
 
 MODULE_AUTHOR("Kim Kyuwon <q1.kim@samsung.com>");
 MODULE_DESCRIPTION("BD2802 LED driver");
diff --git a/drivers/leds/leds-cobalt-qube.c b/drivers/leds/leds-cobalt-qube.c
index da5fb016b1a..6a8725cc7b4 100644
--- a/drivers/leds/leds-cobalt-qube.c
+++ b/drivers/leds/leds-cobalt-qube.c
@@ -75,9 +75,6 @@ static int __devexit cobalt_qube_led_remove(struct platform_device *pdev)
 	return 0;
 }
 
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:cobalt-qube-leds");
-
 static struct platform_driver cobalt_qube_led_driver = {
 	.probe	= cobalt_qube_led_probe,
 	.remove	= __devexit_p(cobalt_qube_led_remove),
@@ -87,19 +84,9 @@ static struct platform_driver cobalt_qube_led_driver = {
 	},
 };
 
-static int __init cobalt_qube_led_init(void)
-{
-	return platform_driver_register(&cobalt_qube_led_driver);
-}
-
-static void __exit cobalt_qube_led_exit(void)
-{
-	platform_driver_unregister(&cobalt_qube_led_driver);
-}
-
-module_init(cobalt_qube_led_init);
-module_exit(cobalt_qube_led_exit);
+module_platform_driver(cobalt_qube_led_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Front LED support for Cobalt Server");
 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_ALIAS("platform:cobalt-qube-leds");
diff --git a/drivers/leds/leds-da903x.c b/drivers/leds/leds-da903x.c
index f28931cf678..d9cd73ebd6c 100644
--- a/drivers/leds/leds-da903x.c
+++ b/drivers/leds/leds-da903x.c
@@ -158,17 +158,7 @@ static struct platform_driver da903x_led_driver = {
 	.remove		= __devexit_p(da903x_led_remove),
 };
 
-static int __init da903x_led_init(void)
-{
-	return platform_driver_register(&da903x_led_driver);
-}
-module_init(da903x_led_init);
-
-static void __exit da903x_led_exit(void)
-{
-	platform_driver_unregister(&da903x_led_driver);
-}
-module_exit(da903x_led_exit);
+module_platform_driver(da903x_led_driver);
 
 MODULE_DESCRIPTION("LEDs driver for Dialog Semiconductor DA9030/DA9034");
 MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
diff --git a/drivers/leds/leds-dac124s085.c b/drivers/leds/leds-dac124s085.c
index 31cf0d60a9a..d56c14269ff 100644
--- a/drivers/leds/leds-dac124s085.c
+++ b/drivers/leds/leds-dac124s085.c
@@ -131,18 +131,7 @@ static struct spi_driver dac124s085_driver = {
 	},
 };
 
-static int __init dac124s085_leds_init(void)
-{
-	return spi_register_driver(&dac124s085_driver);
-}
-
-static void __exit dac124s085_leds_exit(void)
-{
-	spi_unregister_driver(&dac124s085_driver);
-}
-
-module_init(dac124s085_leds_init);
-module_exit(dac124s085_leds_exit);
+module_spi_driver(dac124s085_driver);
 
 MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>");
 MODULE_DESCRIPTION("DAC124S085 LED driver");
diff --git a/drivers/leds/leds-fsg.c b/drivers/leds/leds-fsg.c
index 49aceffaa5b..b9053fa6e25 100644
--- a/drivers/leds/leds-fsg.c
+++ b/drivers/leds/leds-fsg.c
@@ -224,20 +224,7 @@ static struct platform_driver fsg_led_driver = {
 	},
 };
 
-
-static int __init fsg_led_init(void)
-{
-	return platform_driver_register(&fsg_led_driver);
-}
-
-static void __exit fsg_led_exit(void)
-{
-	platform_driver_unregister(&fsg_led_driver);
-}
-
-
-module_init(fsg_led_init);
-module_exit(fsg_led_exit);
+module_platform_driver(fsg_led_driver);
 
 MODULE_AUTHOR("Rod Whitby <rod@whitby.id.au>");
 MODULE_DESCRIPTION("Freecom FSG-3 LED driver");
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 399a86f2013..7df74cb97e7 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -293,21 +293,9 @@ static struct platform_driver gpio_led_driver = {
 	},
 };
 
-MODULE_ALIAS("platform:leds-gpio");
-
-static int __init gpio_led_init(void)
-{
-	return platform_driver_register(&gpio_led_driver);
-}
-
-static void __exit gpio_led_exit(void)
-{
-	platform_driver_unregister(&gpio_led_driver);
-}
-
-module_init(gpio_led_init);
-module_exit(gpio_led_exit);
+module_platform_driver(gpio_led_driver);
 
 MODULE_AUTHOR("Raphael Assenat <raph@8d.com>, Trent Piepho <tpiepho@freescale.com>");
 MODULE_DESCRIPTION("GPIO LED driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-gpio");
diff --git a/drivers/leds/leds-hp6xx.c b/drivers/leds/leds-hp6xx.c
index bcfbd3a60ea..366b6055e33 100644
--- a/drivers/leds/leds-hp6xx.c
+++ b/drivers/leds/leds-hp6xx.c
@@ -79,9 +79,6 @@ static int hp6xxled_remove(struct platform_device *pdev)
 	return 0;
 }
 
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:hp6xx-led");
-
 static struct platform_driver hp6xxled_driver = {
 	.probe		= hp6xxled_probe,
 	.remove		= hp6xxled_remove,
@@ -91,19 +88,9 @@ static struct platform_driver hp6xxled_driver = {
 	},
 };
 
-static int __init hp6xxled_init(void)
-{
-	return platform_driver_register(&hp6xxled_driver);
-}
-
-static void __exit hp6xxled_exit(void)
-{
-	platform_driver_unregister(&hp6xxled_driver);
-}
-
-module_init(hp6xxled_init);
-module_exit(hp6xxled_exit);
+module_platform_driver(hp6xxled_driver);
 
 MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
 MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:hp6xx-led");
diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
index 0630e4f4b28..45e6878d737 100644
--- a/drivers/leds/leds-lm3530.c
+++ b/drivers/leds/leds-lm3530.c
@@ -457,18 +457,7 @@ static struct i2c_driver lm3530_i2c_driver = {
 	},
 };
 
-static int __init lm3530_init(void)
-{
-	return i2c_add_driver(&lm3530_i2c_driver);
-}
-
-static void __exit lm3530_exit(void)
-{
-	i2c_del_driver(&lm3530_i2c_driver);
-}
-
-module_init(lm3530_init);
-module_exit(lm3530_exit);
+module_i2c_driver(lm3530_i2c_driver);
 
 MODULE_DESCRIPTION("Back Light driver for LM3530");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/leds/leds-lp3944.c b/drivers/leds/leds-lp3944.c
index 9010c054615..b8f9f0a5d43 100644
--- a/drivers/leds/leds-lp3944.c
+++ b/drivers/leds/leds-lp3944.c
@@ -453,18 +453,7 @@ static struct i2c_driver lp3944_driver = {
 	.id_table = lp3944_id,
 };
 
-static int __init lp3944_module_init(void)
-{
-	return i2c_add_driver(&lp3944_driver);
-}
-
-static void __exit lp3944_module_exit(void)
-{
-	i2c_del_driver(&lp3944_driver);
-}
-
-module_init(lp3944_module_init);
-module_exit(lp3944_module_exit);
+module_i2c_driver(lp3944_driver);
 
 MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
 MODULE_DESCRIPTION("LP3944 Fun Light Chip");
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index cb641f1b334..d62a7982a5e 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -797,25 +797,7 @@ static struct i2c_driver lp5521_driver = {
 	.id_table	= lp5521_id,
 };
 
-static int __init lp5521_init(void)
-{
-	int ret;
-
-	ret = i2c_add_driver(&lp5521_driver);
-
-	if (ret < 0)
-		printk(KERN_ALERT "Adding lp5521 driver failed\n");
-
-	return ret;
-}
-
-static void __exit lp5521_exit(void)
-{
-	i2c_del_driver(&lp5521_driver);
-}
-
-module_init(lp5521_init);
-module_exit(lp5521_exit);
+module_i2c_driver(lp5521_driver);
 
 MODULE_AUTHOR("Mathias Nyman, Yuri Zaporozhets, Samu Onkalo");
 MODULE_DESCRIPTION("LP5521 LED engine");
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index 5971e309b23..73e791ae725 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -870,8 +870,6 @@ static int __devinit lp5523_init_led(struct lp5523_led *led, struct device *dev,
 	return 0;
 }
 
-static struct i2c_driver lp5523_driver;
-
 static int __devinit lp5523_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -1021,25 +1019,7 @@ static struct i2c_driver lp5523_driver = {
 	.id_table	= lp5523_id,
 };
 
-static int __init lp5523_init(void)
-{
-	int ret;
-
-	ret = i2c_add_driver(&lp5523_driver);
-
-	if (ret < 0)
-		printk(KERN_ALERT "Adding lp5523 driver failed\n");
-
-	return ret;
-}
-
-static void __exit lp5523_exit(void)
-{
-	i2c_del_driver(&lp5523_driver);
-}
-
-module_init(lp5523_init);
-module_exit(lp5523_exit);
+module_i2c_driver(lp5523_driver);
 
 MODULE_AUTHOR("Mathias Nyman <mathias.nyman@nokia.com>");
 MODULE_DESCRIPTION("LP5523 LED engine");
diff --git a/drivers/leds/leds-lt3593.c b/drivers/leds/leds-lt3593.c
index 53f67b8ce55..e311a96c446 100644
--- a/drivers/leds/leds-lt3593.c
+++ b/drivers/leds/leds-lt3593.c
@@ -199,21 +199,9 @@ static struct platform_driver lt3593_led_driver = {
 	},
 };
 
-MODULE_ALIAS("platform:leds-lt3593");
-
-static int __init lt3593_led_init(void)
-{
-	return platform_driver_register(&lt3593_led_driver);
-}
-
-static void __exit lt3593_led_exit(void)
-{
-	platform_driver_unregister(&lt3593_led_driver);
-}
-
-module_init(lt3593_led_init);
-module_exit(lt3593_led_exit);
+module_platform_driver(lt3593_led_driver);
 
 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
 MODULE_DESCRIPTION("LED driver for LT3593 controllers");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-lt3593");
diff --git a/drivers/leds/leds-mc13783.c b/drivers/leds/leds-mc13783.c
index b3393a9f213..8bc49154155 100644
--- a/drivers/leds/leds-mc13783.c
+++ b/drivers/leds/leds-mc13783.c
@@ -275,7 +275,7 @@ static int __devinit mc13783_led_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	if (pdata->num_leds < 1 || pdata->num_leds > MC13783_LED_MAX) {
+	if (pdata->num_leds < 1 || pdata->num_leds > (MC13783_LED_MAX + 1)) {
 		dev_err(&pdev->dev, "Invalid led count %d\n", pdata->num_leds);
 		return -EINVAL;
 	}
@@ -385,17 +385,7 @@ static struct platform_driver mc13783_led_driver = {
 	.remove		= __devexit_p(mc13783_led_remove),
 };
 
-static int __init mc13783_led_init(void)
-{
-	return platform_driver_register(&mc13783_led_driver);
-}
-module_init(mc13783_led_init);
-
-static void __exit mc13783_led_exit(void)
-{
-	platform_driver_unregister(&mc13783_led_driver);
-}
-module_exit(mc13783_led_exit);
+module_platform_driver(mc13783_led_driver);
 
 MODULE_DESCRIPTION("LEDs driver for Freescale MC13783 PMIC");
 MODULE_AUTHOR("Philippe Retornaz <philippe.retornaz@epfl.ch>");
diff --git a/drivers/leds/leds-netxbig.c b/drivers/leds/leds-netxbig.c
index f2e51c13439..d8433f2d53b 100644
--- a/drivers/leds/leds-netxbig.c
+++ b/drivers/leds/leds-netxbig.c
@@ -81,35 +81,23 @@ static int __devinit gpio_ext_init(struct netxbig_gpio_ext *gpio_ext)
 
 	/* Configure address GPIOs. */
 	for (i = 0; i < gpio_ext->num_addr; i++) {
-		err = gpio_request(gpio_ext->addr[i], "GPIO extension addr");
+		err = gpio_request_one(gpio_ext->addr[i], GPIOF_OUT_INIT_LOW,
+				       "GPIO extension addr");
 		if (err)
 			goto err_free_addr;
-		err = gpio_direction_output(gpio_ext->addr[i], 0);
-		if (err) {
-			gpio_free(gpio_ext->addr[i]);
-			goto err_free_addr;
-		}
 	}
 	/* Configure data GPIOs. */
 	for (i = 0; i < gpio_ext->num_data; i++) {
-		err = gpio_request(gpio_ext->data[i], "GPIO extension data");
+		err = gpio_request_one(gpio_ext->data[i], GPIOF_OUT_INIT_LOW,
+				   "GPIO extension data");
 		if (err)
 			goto err_free_data;
-		err = gpio_direction_output(gpio_ext->data[i], 0);
-		if (err) {
-			gpio_free(gpio_ext->data[i]);
-			goto err_free_data;
-		}
 	}
 	/* Configure "enable select" GPIO. */
-	err = gpio_request(gpio_ext->enable, "GPIO extension enable");
+	err = gpio_request_one(gpio_ext->enable, GPIOF_OUT_INIT_LOW,
+			       "GPIO extension enable");
 	if (err)
 		goto err_free_data;
-	err = gpio_direction_output(gpio_ext->enable, 0);
-	if (err) {
-		gpio_free(gpio_ext->enable);
-		goto err_free_data;
-	}
 
 	return 0;
 
@@ -429,21 +417,10 @@ static struct platform_driver netxbig_led_driver = {
 		.owner	= THIS_MODULE,
 	},
 };
-MODULE_ALIAS("platform:leds-netxbig");
 
-static int __init netxbig_led_init(void)
-{
-	return platform_driver_register(&netxbig_led_driver);
-}
-
-static void __exit netxbig_led_exit(void)
-{
-	platform_driver_unregister(&netxbig_led_driver);
-}
-
-module_init(netxbig_led_init);
-module_exit(netxbig_led_exit);
+module_platform_driver(netxbig_led_driver);
 
 MODULE_AUTHOR("Simon Guinot <sguinot@lacie.com>");
 MODULE_DESCRIPTION("LED driver for LaCie xBig Network boards");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-netxbig");
diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c
index 37b7d0cfe58..2f0a14421a7 100644
--- a/drivers/leds/leds-ns2.c
+++ b/drivers/leds/leds-ns2.c
@@ -323,21 +323,10 @@ static struct platform_driver ns2_led_driver = {
 		.owner	= THIS_MODULE,
 	},
 };
-MODULE_ALIAS("platform:leds-ns2");
-
-static int __init ns2_led_init(void)
-{
-	return platform_driver_register(&ns2_led_driver);
-}
 
-static void __exit ns2_led_exit(void)
-{
-	platform_driver_unregister(&ns2_led_driver);
-}
-
-module_init(ns2_led_init);
-module_exit(ns2_led_exit);
+module_platform_driver(ns2_led_driver);
 
 MODULE_AUTHOR("Simon Guinot <sguinot@lacie.com>");
 MODULE_DESCRIPTION("Network Space v2 LED driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-ns2");
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
index a2c874623e3..ceccab44b5b 100644
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -489,20 +489,8 @@ static int pca9532_remove(struct i2c_client *client)
 	return 0;
 }
 
-static int __init pca9532_init(void)
-{
-	return i2c_add_driver(&pca9532_driver);
-}
-
-static void __exit pca9532_exit(void)
-{
-	i2c_del_driver(&pca9532_driver);
-}
+module_i2c_driver(pca9532_driver);
 
 MODULE_AUTHOR("Riku Voipio");
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("PCA 9532 LED dimmer");
-
-module_init(pca9532_init);
-module_exit(pca9532_exit);
-
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index 66aa3e8e786..dcc3bc3d38d 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -371,18 +371,7 @@ static struct i2c_driver pca955x_driver = {
 	.id_table = pca955x_id,
 };
 
-static int __init pca955x_leds_init(void)
-{
-	return i2c_add_driver(&pca955x_driver);
-}
-
-static void __exit pca955x_leds_exit(void)
-{
-	i2c_del_driver(&pca955x_driver);
-}
-
-module_init(pca955x_leds_init);
-module_exit(pca955x_leds_exit);
+module_i2c_driver(pca955x_driver);
 
 MODULE_AUTHOR("Nate Case <ncase@xes-inc.com>");
 MODULE_DESCRIPTION("PCA955x LED driver");
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index 666daf77872..3ed92f34bd4 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -135,18 +135,7 @@ static struct platform_driver led_pwm_driver = {
 	},
 };
 
-static int __init led_pwm_init(void)
-{
-	return platform_driver_register(&led_pwm_driver);
-}
-
-static void __exit led_pwm_exit(void)
-{
-	platform_driver_unregister(&led_pwm_driver);
-}
-
-module_init(led_pwm_init);
-module_exit(led_pwm_exit);
+module_platform_driver(led_pwm_driver);
 
 MODULE_AUTHOR("Luotao Fu <l.fu@pengutronix.de>");
 MODULE_DESCRIPTION("PWM LED driver for PXA");
diff --git a/drivers/leds/leds-rb532.c b/drivers/leds/leds-rb532.c
index c3525f37f73..a7815b6cd85 100644
--- a/drivers/leds/leds-rb532.c
+++ b/drivers/leds/leds-rb532.c
@@ -57,21 +57,9 @@ static struct platform_driver rb532_led_driver = {
 	},
 };
 
-static int __init rb532_led_init(void)
-{
-	return platform_driver_register(&rb532_led_driver);
-}
-
-static void __exit rb532_led_exit(void)
-{
-	platform_driver_unregister(&rb532_led_driver);
-}
-
-module_init(rb532_led_init);
-module_exit(rb532_led_exit);
-
-MODULE_ALIAS("platform:rb532-led");
+module_platform_driver(rb532_led_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("User LED support for Routerboard532");
 MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
+MODULE_ALIAS("platform:rb532-led");
diff --git a/drivers/leds/leds-regulator.c b/drivers/leds/leds-regulator.c
index 8497f56f8e4..df7e963bddd 100644
--- a/drivers/leds/leds-regulator.c
+++ b/drivers/leds/leds-regulator.c
@@ -229,17 +229,7 @@ static struct platform_driver regulator_led_driver = {
 	.remove = __devexit_p(regulator_led_remove),
 };
 
-static int __init regulator_led_init(void)
-{
-	return platform_driver_register(&regulator_led_driver);
-}
-module_init(regulator_led_init);
-
-static void __exit regulator_led_exit(void)
-{
-	platform_driver_unregister(&regulator_led_driver);
-}
-module_exit(regulator_led_exit);
+module_platform_driver(regulator_led_driver);
 
 MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
 MODULE_DESCRIPTION("Regulator driven LED driver");
diff --git a/drivers/leds/leds-renesas-tpu.c b/drivers/leds/leds-renesas-tpu.c
index 3ee540eb127..32fe337d5c6 100644
--- a/drivers/leds/leds-renesas-tpu.c
+++ b/drivers/leds/leds-renesas-tpu.c
@@ -339,18 +339,7 @@ static struct platform_driver r_tpu_device_driver = {
 	}
 };
 
-static int __init r_tpu_init(void)
-{
-	return platform_driver_register(&r_tpu_device_driver);
-}
-
-static void __exit r_tpu_exit(void)
-{
-	platform_driver_unregister(&r_tpu_device_driver);
-}
-
-module_init(r_tpu_init);
-module_exit(r_tpu_exit);
+module_platform_driver(r_tpu_device_driver);
 
 MODULE_AUTHOR("Magnus Damm");
 MODULE_DESCRIPTION("Renesas TPU LED Driver");
diff --git a/drivers/leds/leds-s3c24xx.c b/drivers/leds/leds-s3c24xx.c
index 29f8b0f0e2c..bd0a5ed49c4 100644
--- a/drivers/leds/leds-s3c24xx.c
+++ b/drivers/leds/leds-s3c24xx.c
@@ -121,18 +121,7 @@ static struct platform_driver s3c24xx_led_driver = {
 	},
 };
 
-static int __init s3c24xx_led_init(void)
-{
-	return platform_driver_register(&s3c24xx_led_driver);
-}
-
-static void __exit s3c24xx_led_exit(void)
-{
-	platform_driver_unregister(&s3c24xx_led_driver);
-}
-
-module_init(s3c24xx_led_init);
-module_exit(s3c24xx_led_exit);
+module_platform_driver(s3c24xx_led_driver);
 
 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
 MODULE_DESCRIPTION("S3C24XX LED driver");
diff --git a/drivers/leds/leds-tca6507.c b/drivers/leds/leds-tca6507.c
new file mode 100644
index 00000000000..133f89fb707
--- /dev/null
+++ b/drivers/leds/leds-tca6507.c
@@ -0,0 +1,779 @@
+/*
+ * leds-tca6507
+ *
+ * The TCA6507 is a programmable LED controller that can drive 7
+ * separate lines either by holding them low, or by pulsing them
+ * with modulated width.
+ * The modulation can be varied in a simple pattern to produce a blink or
+ * double-blink.
+ *
+ * This driver can configure each line either as a 'GPIO' which is out-only
+ * (no pull-up) or as an LED with variable brightness and hardware-assisted
+ * blinking.
+ *
+ * Apart from OFF and ON there are three programmable brightness levels which
+ * can be programmed from 0 to 15 and indicate how many 500usec intervals in
+ * each 8msec that the led is 'on'.  The levels are named MASTER, BANK0 and
+ * BANK1.
+ *
+ * There are two different blink rates that can be programmed, each with
+ * separate time for rise, on, fall, off and second-off.  Thus if 3 or more
+ * different non-trivial rates are required, software must be used for the extra
+ * rates. The two different blink rates must align with the two levels BANK0 and
+ * BANK1.
+ * This driver does not support double-blink so 'second-off' always matches
+ * 'off'.
+ *
+ * Only 16 different times can be programmed in a roughly logarithmic scale from
+ * 64ms to 16320ms.  To be precise the possible times are:
+ *    0, 64, 128, 192, 256, 384, 512, 768,
+ *    1024, 1536, 2048, 3072, 4096, 5760, 8128, 16320
+ *
+ * Times that cannot be closely matched with these must be
+ * handled in software.  This driver allows 12.5% error in matching.
+ *
+ * This driver does not allow rise/fall rates to be set explicitly.  When trying
+ * to match a given 'on' or 'off' period, an appropriate pair of 'change' and
+ * 'hold' times are chosen to get a close match.  If the target delay is even,
+ * the 'change' number will be the smaller; if odd, the 'hold' number will be
+ * the smaller.
+
+ * Choosing pairs of delays with 12.5% errors allows us to match delays in the
+ * ranges: 56-72, 112-144, 168-216, 224-27504, 28560-36720.
+ * 26% of the achievable sums can be matched by multiple pairings. For example
+ * 1536 == 1536+0, 1024+512, or 768+768.  This driver will always choose the
+ * pairing with the least maximum - 768+768 in this case.  Other pairings are
+ * not available.
+ *
+ * Access to the 3 levels and 2 blinks are on a first-come, first-served basis.
+ * Access can be shared by multiple leds if they have the same level and
+ * either same blink rates, or some don't blink.
+ * When a led changes, it relinquishes access and tries again, so it might
+ * lose access to hardware blink.
+ * If a blink engine cannot be allocated, software blink is used.
+ * If the desired brightness cannot be allocated, the closest available non-zero
+ * brightness is used.  As 'full' is always available, the worst case would be
+ * to have two different blink rates at '1', with Max at '2', then other leds
+ * will have to choose between '2' and '16'.  Hopefully this is not likely.
+ *
+ * Each bank (BANK0 and BANK1) has two usage counts - LEDs using the brightness
+ * and LEDs using the blink.  It can only be reprogrammed when the appropriate
+ * counter is zero.  The MASTER level has a single usage count.
+ *
+ * Each Led has programmable 'on' and 'off' time as milliseconds.  With each
+ * there is a flag saying if it was explicitly requested or defaulted.
+ * Similarly the banks know if each time was explicit or a default.  Defaults
+ * are permitted to be changed freely - they are not recognised when matching.
+ *
+ *
+ * An led-tca6507 device must be provided with platform data.  This data
+ * lists for each output: the name, default trigger, and whether the signal
+ * is being used as a GPiO rather than an led.  'struct led_plaform_data'
+ * is used for this.  If 'name' is NULL, the output isn't used.  If 'flags'
+ * is TCA6507_MAKE_CPIO, the output is a GPO.
+ * The "struct led_platform_data" can be embedded in a
+ * "struct tca6507_platform_data" which adds a 'gpio_base' for the GPiOs,
+ * and a 'setup' callback which is called once the GPiOs are available.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/workqueue.h>
+#include <linux/leds-tca6507.h>
+
+/* LED select registers determine the source that drives LED outputs */
+#define TCA6507_LS_LED_OFF	0x0	/* Output HI-Z (off) */
+#define TCA6507_LS_LED_OFF1	0x1	/* Output HI-Z (off) - not used */
+#define TCA6507_LS_LED_PWM0	0x2	/* Output LOW with Bank0 rate */
+#define TCA6507_LS_LED_PWM1	0x3	/* Output LOW with Bank1 rate */
+#define TCA6507_LS_LED_ON	0x4	/* Output LOW (on) */
+#define TCA6507_LS_LED_MIR	0x5	/* Output LOW with Master Intensity */
+#define TCA6507_LS_BLINK0	0x6	/* Blink at Bank0 rate */
+#define TCA6507_LS_BLINK1	0x7	/* Blink at Bank1 rate */
+
+enum {
+	BANK0,
+	BANK1,
+	MASTER,
+};
+static int bank_source[3] = {
+	TCA6507_LS_LED_PWM0,
+	TCA6507_LS_LED_PWM1,
+	TCA6507_LS_LED_MIR,
+};
+static int blink_source[2] = {
+	TCA6507_LS_BLINK0,
+	TCA6507_LS_BLINK1,
+};
+
+/* PWM registers */
+#define	TCA6507_REG_CNT			11
+
+/*
+ * 0x00, 0x01, 0x02 encode the TCA6507_LS_* values, each output
+ * owns one bit in each register
+ */
+#define	TCA6507_FADE_ON			0x03
+#define	TCA6507_FULL_ON			0x04
+#define	TCA6507_FADE_OFF		0x05
+#define	TCA6507_FIRST_OFF		0x06
+#define	TCA6507_SECOND_OFF		0x07
+#define	TCA6507_MAX_INTENSITY		0x08
+#define	TCA6507_MASTER_INTENSITY	0x09
+#define	TCA6507_INITIALIZE		0x0A
+
+#define	INIT_CODE			0x8
+
+#define TIMECODES 16
+static int time_codes[TIMECODES] = {
+	0, 64, 128, 192, 256, 384, 512, 768,
+	1024, 1536, 2048, 3072, 4096, 5760, 8128, 16320
+};
+
+/* Convert an led.brightness level (0..255) to a TCA6507 level (0..15) */
+static inline int TO_LEVEL(int brightness)
+{
+	return brightness >> 4;
+}
+
+/* ...and convert back */
+static inline int TO_BRIGHT(int level)
+{
+	if (level)
+		return (level << 4) | 0xf;
+	return 0;
+}
+
+#define NUM_LEDS 7
+struct tca6507_chip {
+	int			reg_set;	/* One bit per register where
+						 * a '1' means the register
+						 * should be written */
+	u8			reg_file[TCA6507_REG_CNT];
+	/* Bank 2 is Master Intensity and doesn't use times */
+	struct bank {
+		int level;
+		int ontime, offtime;
+		int on_dflt, off_dflt;
+		int time_use, level_use;
+	} bank[3];
+	struct i2c_client	*client;
+	struct work_struct	work;
+	spinlock_t		lock;
+
+	struct tca6507_led {
+		struct tca6507_chip	*chip;
+		struct led_classdev	led_cdev;
+		int			num;
+		int			ontime, offtime;
+		int			on_dflt, off_dflt;
+		int			bank;	/* Bank used, or -1 */
+		int			blink;	/* Set if hardware-blinking */
+	} leds[NUM_LEDS];
+#ifdef CONFIG_GPIOLIB
+	struct gpio_chip		gpio;
+	const char			*gpio_name[NUM_LEDS];
+	int				gpio_map[NUM_LEDS];
+#endif
+};
+
+static const struct i2c_device_id tca6507_id[] = {
+	{ "tca6507" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, tca6507_id);
+
+static int choose_times(int msec, int *c1p, int *c2p)
+{
+	/*
+	 * Choose two timecodes which add to 'msec' as near as possible.
+	 * The first returned is the 'on' or 'off' time.  The second is to be
+	 * used as a 'fade-on' or 'fade-off' time.  If 'msec' is even,
+	 * the first will not be smaller than the second.  If 'msec' is odd,
+	 * the first will not be larger than the second.
+	 * If we cannot get a sum within 1/8 of 'msec' fail with -EINVAL,
+	 * otherwise return the sum that was achieved, plus 1 if the first is
+	 * smaller.
+	 * If two possibilities are equally good (e.g. 512+0, 256+256), choose
+	 * the first pair so there is more change-time visible (i.e. it is
+	 * softer).
+	 */
+	int c1, c2;
+	int tmax = msec * 9 / 8;
+	int tmin = msec * 7 / 8;
+	int diff = 65536;
+
+	/* We start at '1' to ensure we never even think of choosing a
+	 * total time of '0'.
+	 */
+	for (c1 = 1; c1 < TIMECODES; c1++) {
+		int t = time_codes[c1];
+		if (t*2 < tmin)
+			continue;
+		if (t > tmax)
+			break;
+		for (c2 = 0; c2 <= c1; c2++) {
+			int tt = t + time_codes[c2];
+			int d;
+			if (tt < tmin)
+				continue;
+			if (tt > tmax)
+				break;
+			/* This works! */
+			d = abs(msec - tt);
+			if (d >= diff)
+				continue;
+			/* Best yet */
+			*c1p = c1;
+			*c2p = c2;
+			diff = d;
+			if (d == 0)
+				return msec;
+		}
+	}
+	if (diff < 65536) {
+		int actual;
+		if (msec & 1) {
+			c1 = *c2p;
+			*c2p = *c1p;
+			*c1p = c1;
+		}
+		actual = time_codes[*c1p] + time_codes[*c2p];
+		if (*c1p < *c2p)
+			return actual + 1;
+		else
+			return actual;
+	}
+	/* No close match */
+	return -EINVAL;
+}
+
+/*
+ * Update the register file with the appropriate 3-bit state for
+ * the given led.
+ */
+static void set_select(struct tca6507_chip *tca, int led, int val)
+{
+	int mask = (1 << led);
+	int bit;
+
+	for (bit = 0; bit < 3; bit++) {
+		int n = tca->reg_file[bit] & ~mask;
+		if (val & (1 << bit))
+			n |= mask;
+		if (tca->reg_file[bit] != n) {
+			tca->reg_file[bit] = n;
+			tca->reg_set |= (1 << bit);
+		}
+	}
+}
+
+/* Update the register file with the appropriate 4-bit code for
+ * one bank or other.  This can be used for timers, for levels, or
+ * for initialisation.
+ */
+static void set_code(struct tca6507_chip *tca, int reg, int bank, int new)
+{
+	int mask = 0xF;
+	int n;
+	if (bank) {
+		mask <<= 4;
+		new <<= 4;
+	}
+	n = tca->reg_file[reg] & ~mask;
+	n |= new;
+	if (tca->reg_file[reg] != n) {
+		tca->reg_file[reg] = n;
+		tca->reg_set |= 1 << reg;
+	}
+}
+
+/* Update brightness level. */
+static void set_level(struct tca6507_chip *tca, int bank, int level)
+{
+	switch (bank) {
+	case BANK0:
+	case BANK1:
+		set_code(tca, TCA6507_MAX_INTENSITY, bank, level);
+		break;
+	case MASTER:
+		set_code(tca, TCA6507_MASTER_INTENSITY, 0, level);
+		break;
+	}
+	tca->bank[bank].level = level;
+}
+
+/* Record all relevant time code for a given bank */
+static void set_times(struct tca6507_chip *tca, int bank)
+{
+	int c1, c2;
+	int result;
+
+	result = choose_times(tca->bank[bank].ontime, &c1, &c2);
+	dev_dbg(&tca->client->dev,
+		"Chose on  times %d(%d) %d(%d) for %dms\n", c1, time_codes[c1],
+		c2, time_codes[c2], tca->bank[bank].ontime);
+	set_code(tca, TCA6507_FADE_ON, bank, c2);
+	set_code(tca, TCA6507_FULL_ON, bank, c1);
+	tca->bank[bank].ontime = result;
+
+	result = choose_times(tca->bank[bank].offtime, &c1, &c2);
+	dev_dbg(&tca->client->dev,
+		"Chose off times %d(%d) %d(%d) for %dms\n", c1, time_codes[c1],
+		c2, time_codes[c2], tca->bank[bank].offtime);
+	set_code(tca, TCA6507_FADE_OFF, bank, c2);
+	set_code(tca, TCA6507_FIRST_OFF, bank, c1);
+	set_code(tca, TCA6507_SECOND_OFF, bank, c1);
+	tca->bank[bank].offtime = result;
+
+	set_code(tca, TCA6507_INITIALIZE, bank, INIT_CODE);
+}
+
+/* Write all needed register of tca6507 */
+
+static void tca6507_work(struct work_struct *work)
+{
+	struct tca6507_chip *tca = container_of(work, struct tca6507_chip,
+						work);
+	struct i2c_client *cl = tca->client;
+	int set;
+	u8 file[TCA6507_REG_CNT];
+	int r;
+
+	spin_lock_irq(&tca->lock);
+	set = tca->reg_set;
+	memcpy(file, tca->reg_file, TCA6507_REG_CNT);
+	tca->reg_set = 0;
+	spin_unlock_irq(&tca->lock);
+
+	for (r = 0; r < TCA6507_REG_CNT; r++)
+		if (set & (1<<r))
+			i2c_smbus_write_byte_data(cl, r, file[r]);
+}
+
+static void led_release(struct tca6507_led *led)
+{
+	/* If led owns any resource, release it. */
+	struct tca6507_chip *tca = led->chip;
+	if (led->bank >= 0) {
+		struct bank *b = tca->bank + led->bank;
+		if (led->blink)
+			b->time_use--;
+		b->level_use--;
+	}
+	led->blink = 0;
+	led->bank = -1;
+}
+
+static int led_prepare(struct tca6507_led *led)
+{
+	/* Assign this led to a bank, configuring that bank if necessary. */
+	int level = TO_LEVEL(led->led_cdev.brightness);
+	struct tca6507_chip *tca = led->chip;
+	int c1, c2;
+	int i;
+	struct bank *b;
+	int need_init = 0;
+
+	led->led_cdev.brightness = TO_BRIGHT(level);
+	if (level == 0) {
+		set_select(tca, led->num, TCA6507_LS_LED_OFF);
+		return 0;
+	}
+
+	if (led->ontime == 0 || led->offtime == 0) {
+		/*
+		 * Just set the brightness, choosing first usable bank.
+		 * If none perfect, choose best.
+		 * Count backwards so we check MASTER bank first
+		 * to avoid wasting a timer.
+		 */
+		int best = -1;/* full-on */
+		int diff = 15-level;
+
+		if (level == 15) {
+			set_select(tca, led->num, TCA6507_LS_LED_ON);
+			return 0;
+		}
+
+		for (i = MASTER; i >= BANK0; i--) {
+			int d;
+			if (tca->bank[i].level == level ||
+			    tca->bank[i].level_use == 0) {
+				best = i;
+				break;
+			}
+			d = abs(level - tca->bank[i].level);
+			if (d < diff) {
+				diff = d;
+				best = i;
+			}
+		}
+		if (best == -1) {
+			/* Best brightness is full-on */
+			set_select(tca, led->num, TCA6507_LS_LED_ON);
+			led->led_cdev.brightness = LED_FULL;
+			return 0;
+		}
+
+		if (!tca->bank[best].level_use)
+			set_level(tca, best, level);
+
+		tca->bank[best].level_use++;
+		led->bank = best;
+		set_select(tca, led->num, bank_source[best]);
+		led->led_cdev.brightness = TO_BRIGHT(tca->bank[best].level);
+		return 0;
+	}
+
+	/*
+	 * We have on/off time so we need to try to allocate a timing bank.
+	 * First check if times are compatible with hardware and give up if
+	 * not.
+	 */
+	if (choose_times(led->ontime, &c1, &c2) < 0)
+		return -EINVAL;
+	if (choose_times(led->offtime, &c1, &c2) < 0)
+		return -EINVAL;
+
+	for (i = BANK0; i <= BANK1; i++) {
+		if (tca->bank[i].level_use == 0)
+			/* not in use - it is ours! */
+			break;
+		if (tca->bank[i].level != level)
+			/* Incompatible level - skip */
+			/* FIX: if timer matches we maybe should consider
+			 * this anyway...
+			 */
+			continue;
+
+		if (tca->bank[i].time_use == 0)
+			/* Timer not in use, and level matches - use it */
+			break;
+
+		if (!(tca->bank[i].on_dflt ||
+		      led->on_dflt ||
+		      tca->bank[i].ontime == led->ontime))
+			/* on time is incompatible */
+			continue;
+
+		if (!(tca->bank[i].off_dflt ||
+		      led->off_dflt ||
+		      tca->bank[i].offtime == led->offtime))
+			/* off time is incompatible */
+			continue;
+
+		/* looks like a suitable match */
+		break;
+	}
+
+	if (i > BANK1)
+		/* Nothing matches - how sad */
+		return -EINVAL;
+
+	b = &tca->bank[i];
+	if (b->level_use == 0)
+		set_level(tca, i, level);
+	b->level_use++;
+	led->bank = i;
+
+	if (b->on_dflt ||
+	    !led->on_dflt ||
+	    b->time_use == 0) {
+		b->ontime = led->ontime;
+		b->on_dflt = led->on_dflt;
+		need_init = 1;
+	}
+
+	if (b->off_dflt ||
+	    !led->off_dflt ||
+	    b->time_use == 0) {
+		b->offtime = led->offtime;
+		b->off_dflt = led->off_dflt;
+		need_init = 1;
+	}
+
+	if (need_init)
+		set_times(tca, i);
+
+	led->ontime = b->ontime;
+	led->offtime = b->offtime;
+
+	b->time_use++;
+	led->blink = 1;
+	led->led_cdev.brightness = TO_BRIGHT(b->level);
+	set_select(tca, led->num, blink_source[i]);
+	return 0;
+}
+
+static int led_assign(struct tca6507_led *led)
+{
+	struct tca6507_chip *tca = led->chip;
+	int err;
+	unsigned long flags;
+
+	spin_lock_irqsave(&tca->lock, flags);
+	led_release(led);
+	err = led_prepare(led);
+	if (err) {
+		/*
+		 * Can only fail on timer setup.  In that case we need to
+		 * re-establish as steady level.
+		 */
+		led->ontime = 0;
+		led->offtime = 0;
+		led_prepare(led);
+	}
+	spin_unlock_irqrestore(&tca->lock, flags);
+
+	if (tca->reg_set)
+		schedule_work(&tca->work);
+	return err;
+}
+
+static void tca6507_brightness_set(struct led_classdev *led_cdev,
+				   enum led_brightness brightness)
+{
+	struct tca6507_led *led = container_of(led_cdev, struct tca6507_led,
+					       led_cdev);
+	led->led_cdev.brightness = brightness;
+	led->ontime = 0;
+	led->offtime = 0;
+	led_assign(led);
+}
+
+static int tca6507_blink_set(struct led_classdev *led_cdev,
+			     unsigned long *delay_on,
+			     unsigned long *delay_off)
+{
+	struct tca6507_led *led = container_of(led_cdev, struct tca6507_led,
+					       led_cdev);
+
+	if (*delay_on == 0)
+		led->on_dflt = 1;
+	else if (delay_on != &led_cdev->blink_delay_on)
+		led->on_dflt = 0;
+	led->ontime = *delay_on;
+
+	if (*delay_off == 0)
+		led->off_dflt = 1;
+	else if (delay_off != &led_cdev->blink_delay_off)
+		led->off_dflt = 0;
+	led->offtime = *delay_off;
+
+	if (led->ontime == 0)
+		led->ontime = 512;
+	if (led->offtime == 0)
+		led->offtime = 512;
+
+	if (led->led_cdev.brightness == LED_OFF)
+		led->led_cdev.brightness = LED_FULL;
+	if (led_assign(led) < 0) {
+		led->ontime = 0;
+		led->offtime = 0;
+		led->led_cdev.brightness = LED_OFF;
+		return -EINVAL;
+	}
+	*delay_on = led->ontime;
+	*delay_off = led->offtime;
+	return 0;
+}
+
+#ifdef CONFIG_GPIOLIB
+static void tca6507_gpio_set_value(struct gpio_chip *gc,
+				   unsigned offset, int val)
+{
+	struct tca6507_chip *tca = container_of(gc, struct tca6507_chip, gpio);
+	unsigned long flags;
+
+	spin_lock_irqsave(&tca->lock, flags);
+	/*
+	 * 'OFF' is floating high, and 'ON' is pulled down, so it has the
+	 * inverse sense of 'val'.
+	 */
+	set_select(tca, tca->gpio_map[offset],
+		   val ? TCA6507_LS_LED_OFF : TCA6507_LS_LED_ON);
+	spin_unlock_irqrestore(&tca->lock, flags);
+	if (tca->reg_set)
+		schedule_work(&tca->work);
+}
+
+static int tca6507_gpio_direction_output(struct gpio_chip *gc,
+					  unsigned offset, int val)
+{
+	tca6507_gpio_set_value(gc, offset, val);
+	return 0;
+}
+
+static int tca6507_probe_gpios(struct i2c_client *client,
+			       struct tca6507_chip *tca,
+			       struct tca6507_platform_data *pdata)
+{
+	int err;
+	int i = 0;
+	int gpios = 0;
+
+	for (i = 0; i < NUM_LEDS; i++)
+		if (pdata->leds.leds[i].name && pdata->leds.leds[i].flags) {
+			/* Configure as a gpio */
+			tca->gpio_name[gpios] = pdata->leds.leds[i].name;
+			tca->gpio_map[gpios] = i;
+			gpios++;
+		}
+
+	if (!gpios)
+		return 0;
+
+	tca->gpio.label = "gpio-tca6507";
+	tca->gpio.names = tca->gpio_name;
+	tca->gpio.ngpio = gpios;
+	tca->gpio.base = pdata->gpio_base;
+	tca->gpio.owner = THIS_MODULE;
+	tca->gpio.direction_output = tca6507_gpio_direction_output;
+	tca->gpio.set = tca6507_gpio_set_value;
+	tca->gpio.dev = &client->dev;
+	err = gpiochip_add(&tca->gpio);
+	if (err) {
+		tca->gpio.ngpio = 0;
+		return err;
+	}
+	if (pdata->setup)
+		pdata->setup(tca->gpio.base, tca->gpio.ngpio);
+	return 0;
+}
+
+static void tca6507_remove_gpio(struct tca6507_chip *tca)
+{
+	if (tca->gpio.ngpio) {
+		int err = gpiochip_remove(&tca->gpio);
+		dev_err(&tca->client->dev, "%s failed, %d\n",
+			"gpiochip_remove()", err);
+	}
+}
+#else /* CONFIG_GPIOLIB */
+static int tca6507_probe_gpios(struct i2c_client *client,
+			       struct tca6507_chip *tca,
+			       struct tca6507_platform_data *pdata)
+{
+	return 0;
+}
+static void tca6507_remove_gpio(struct tca6507_chip *tca)
+{
+}
+#endif /* CONFIG_GPIOLIB */
+
+static int __devinit tca6507_probe(struct i2c_client *client,
+				   const struct i2c_device_id *id)
+{
+	struct tca6507_chip *tca;
+	struct i2c_adapter *adapter;
+	struct tca6507_platform_data *pdata;
+	int err;
+	int i = 0;
+
+	adapter = to_i2c_adapter(client->dev.parent);
+	pdata = client->dev.platform_data;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
+		return -EIO;
+
+	if (!pdata || pdata->leds.num_leds != NUM_LEDS) {
+		dev_err(&client->dev, "Need %d entries in platform-data list\n",
+			NUM_LEDS);
+		return -ENODEV;
+	}
+	err = -ENOMEM;
+	tca = kzalloc(sizeof(*tca), GFP_KERNEL);
+	if (!tca)
+		goto exit;
+
+	tca->client = client;
+	INIT_WORK(&tca->work, tca6507_work);
+	spin_lock_init(&tca->lock);
+	i2c_set_clientdata(client, tca);
+
+	for (i = 0; i < NUM_LEDS; i++) {
+		struct tca6507_led *l = tca->leds + i;
+
+		l->chip = tca;
+		l->num = i;
+		if (pdata->leds.leds[i].name && !pdata->leds.leds[i].flags) {
+			l->led_cdev.name = pdata->leds.leds[i].name;
+			l->led_cdev.default_trigger
+				= pdata->leds.leds[i].default_trigger;
+			l->led_cdev.brightness_set = tca6507_brightness_set;
+			l->led_cdev.blink_set = tca6507_blink_set;
+			l->bank = -1;
+			err = led_classdev_register(&client->dev,
+						    &l->led_cdev);
+			if (err < 0)
+				goto exit;
+		}
+	}
+	err = tca6507_probe_gpios(client, tca, pdata);
+	if (err)
+		goto exit;
+	/* set all registers to known state - zero */
+	tca->reg_set = 0x7f;
+	schedule_work(&tca->work);
+
+	return 0;
+exit:
+	while (i--)
+		if (tca->leds[i].led_cdev.name)
+			led_classdev_unregister(&tca->leds[i].led_cdev);
+	cancel_work_sync(&tca->work);
+	i2c_set_clientdata(client, NULL);
+	kfree(tca);
+	return err;
+}
+
+static int __devexit tca6507_remove(struct i2c_client *client)
+{
+	int i;
+	struct tca6507_chip *tca = i2c_get_clientdata(client);
+	struct tca6507_led *tca_leds = tca->leds;
+
+	for (i = 0; i < NUM_LEDS; i++) {
+		if (tca_leds[i].led_cdev.name)
+			led_classdev_unregister(&tca_leds[i].led_cdev);
+	}
+	tca6507_remove_gpio(tca);
+	cancel_work_sync(&tca->work);
+	i2c_set_clientdata(client, NULL);
+	kfree(tca);
+
+	return 0;
+}
+
+static struct i2c_driver tca6507_driver = {
+	.driver   = {
+		.name    = "leds-tca6507",
+		.owner   = THIS_MODULE,
+	},
+	.probe    = tca6507_probe,
+	.remove   = __devexit_p(tca6507_remove),
+	.id_table = tca6507_id,
+};
+
+static int __init tca6507_leds_init(void)
+{
+	return i2c_add_driver(&tca6507_driver);
+}
+
+static void __exit tca6507_leds_exit(void)
+{
+	i2c_del_driver(&tca6507_driver);
+}
+
+module_init(tca6507_leds_init);
+module_exit(tca6507_leds_exit);
+
+MODULE_AUTHOR("NeilBrown <neilb@suse.de>");
+MODULE_DESCRIPTION("TCA6507 LED/GPO driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/leds/leds-wm831x-status.c b/drivers/leds/leds-wm831x-status.c
index b1eb34c3e81..74a24cf897c 100644
--- a/drivers/leds/leds-wm831x-status.c
+++ b/drivers/leds/leds-wm831x-status.c
@@ -237,7 +237,8 @@ static int wm831x_status_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	drvdata = kzalloc(sizeof(struct wm831x_status), GFP_KERNEL);
+	drvdata = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_status),
+			       GFP_KERNEL);
 	if (!drvdata)
 		return -ENOMEM;
 	dev_set_drvdata(&pdev->dev, drvdata);
@@ -300,7 +301,6 @@ static int wm831x_status_probe(struct platform_device *pdev)
 
 err_led:
 	led_classdev_unregister(&drvdata->cdev);
-	kfree(drvdata);
 err:
 	return ret;
 }
@@ -311,7 +311,6 @@ static int wm831x_status_remove(struct platform_device *pdev)
 
 	device_remove_file(drvdata->cdev.dev, &dev_attr_src);
 	led_classdev_unregister(&drvdata->cdev);
-	kfree(drvdata);
 
 	return 0;
 }
@@ -325,17 +324,7 @@ static struct platform_driver wm831x_status_driver = {
 	.remove = wm831x_status_remove,
 };
 
-static int __devinit wm831x_status_init(void)
-{
-	return platform_driver_register(&wm831x_status_driver);
-}
-module_init(wm831x_status_init);
-
-static void wm831x_status_exit(void)
-{
-	platform_driver_unregister(&wm831x_status_driver);
-}
-module_exit(wm831x_status_exit);
+module_platform_driver(wm831x_status_driver);
 
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 MODULE_DESCRIPTION("WM831x status LED driver");
diff --git a/drivers/leds/leds-wm8350.c b/drivers/leds/leds-wm8350.c
index 4a127657835..918d4baff1c 100644
--- a/drivers/leds/leds-wm8350.c
+++ b/drivers/leds/leds-wm8350.c
@@ -227,7 +227,7 @@ static int wm8350_led_probe(struct platform_device *pdev)
 		goto err_isink;
 	}
 
-	led = kzalloc(sizeof(*led), GFP_KERNEL);
+	led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
 	if (led == NULL) {
 		ret = -ENOMEM;
 		goto err_dcdc;
@@ -259,12 +259,10 @@ static int wm8350_led_probe(struct platform_device *pdev)
 
 	ret = led_classdev_register(&pdev->dev, &led->cdev);
 	if (ret < 0)
-		goto err_led;
+		goto err_dcdc;
 
 	return 0;
 
- err_led:
-	kfree(led);
  err_dcdc:
 	regulator_put(dcdc);
  err_isink:
@@ -281,7 +279,6 @@ static int wm8350_led_remove(struct platform_device *pdev)
 	wm8350_led_disable(led);
 	regulator_put(led->dcdc);
 	regulator_put(led->isink);
-	kfree(led);
 	return 0;
 }
 
@@ -295,17 +292,7 @@ static struct platform_driver wm8350_led_driver = {
 	.shutdown = wm8350_led_shutdown,
 };
 
-static int __devinit wm8350_led_init(void)
-{
-	return platform_driver_register(&wm8350_led_driver);
-}
-module_init(wm8350_led_init);
-
-static void wm8350_led_exit(void)
-{
-	platform_driver_unregister(&wm8350_led_driver);
-}
-module_exit(wm8350_led_exit);
+module_platform_driver(wm8350_led_driver);
 
 MODULE_AUTHOR("Mark Brown");
 MODULE_DESCRIPTION("WM8350 LED driver");
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 8e286259a00..8a1c031391d 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -228,11 +228,11 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
 		alarm->time.tm_hour = now.tm_hour;
 
 	/* For simplicity, only support date rollover for now */
-	if (alarm->time.tm_mday == -1) {
+	if (alarm->time.tm_mday < 1 || alarm->time.tm_mday > 31) {
 		alarm->time.tm_mday = now.tm_mday;
 		missing = day;
 	}
-	if (alarm->time.tm_mon == -1) {
+	if ((unsigned)alarm->time.tm_mon >= 12) {
 		alarm->time.tm_mon = now.tm_mon;
 		if (missing == none)
 			missing = month;
diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
index 64b847b7f97..f04761e6622 100644
--- a/drivers/rtc/rtc-88pm860x.c
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -410,17 +410,7 @@ static struct platform_driver pm860x_rtc_driver = {
 	.remove		= __devexit_p(pm860x_rtc_remove),
 };
 
-static int __init pm860x_rtc_init(void)
-{
-	return platform_driver_register(&pm860x_rtc_driver);
-}
-module_init(pm860x_rtc_init);
-
-static void __exit pm860x_rtc_exit(void)
-{
-	platform_driver_unregister(&pm860x_rtc_driver);
-}
-module_exit(pm860x_rtc_exit);
+module_platform_driver(pm860x_rtc_driver);
 
 MODULE_DESCRIPTION("Marvell 88PM860x RTC driver");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c
index e346705aae9..a0a9810adf0 100644
--- a/drivers/rtc/rtc-ab8500.c
+++ b/drivers/rtc/rtc-ab8500.c
@@ -90,7 +90,7 @@ static int ab8500_rtc_read_time(struct device *dev, struct rtc_time *tm)
 
 	/* Early AB8500 chips will not clear the rtc read request bit */
 	if (abx500_get_chip_id(dev) == 0) {
-		msleep(1);
+		usleep_range(1000, 1000);
 	} else {
 		/* Wait for some cycles after enabling the rtc read in ab8500 */
 		while (time_before(jiffies, timeout)) {
@@ -102,7 +102,7 @@ static int ab8500_rtc_read_time(struct device *dev, struct rtc_time *tm)
 			if (!(value & RTC_READ_REQUEST))
 				break;
 
-			msleep(1);
+			usleep_range(1000, 5000);
 		}
 	}
 
@@ -258,6 +258,109 @@ static int ab8500_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
 	return ab8500_rtc_irq_enable(dev, alarm->enabled);
 }
 
+
+static int ab8500_rtc_set_calibration(struct device *dev, int calibration)
+{
+	int retval;
+	u8  rtccal = 0;
+
+	/*
+	 * Check that the calibration value (which is in units of 0.5
+	 * parts-per-million) is in the AB8500's range for RtcCalibration
+	 * register. -128 (0x80) is not permitted because the AB8500 uses
+	 * a sign-bit rather than two's complement, so 0x80 is just another
+	 * representation of zero.
+	 */
+	if ((calibration < -127) || (calibration > 127)) {
+		dev_err(dev, "RtcCalibration value outside permitted range\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * The AB8500 uses sign (in bit7) and magnitude (in bits0-7)
+	 * so need to convert to this sort of representation before writing
+	 * into RtcCalibration register...
+	 */
+	if (calibration >= 0)
+		rtccal = 0x7F & calibration;
+	else
+		rtccal = ~(calibration - 1) | 0x80;
+
+	retval = abx500_set_register_interruptible(dev, AB8500_RTC,
+			AB8500_RTC_CALIB_REG, rtccal);
+
+	return retval;
+}
+
+static int ab8500_rtc_get_calibration(struct device *dev, int *calibration)
+{
+	int retval;
+	u8  rtccal = 0;
+
+	retval =  abx500_get_register_interruptible(dev, AB8500_RTC,
+			AB8500_RTC_CALIB_REG, &rtccal);
+	if (retval >= 0) {
+		/*
+		 * The AB8500 uses sign (in bit7) and magnitude (in bits0-7)
+		 * so need to convert value from RtcCalibration register into
+		 * a two's complement signed value...
+		 */
+		if (rtccal & 0x80)
+			*calibration = 0 - (rtccal & 0x7F);
+		else
+			*calibration = 0x7F & rtccal;
+	}
+
+	return retval;
+}
+
+static ssize_t ab8500_sysfs_store_rtc_calibration(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	int retval;
+	int calibration = 0;
+
+	if (sscanf(buf, " %i ", &calibration) != 1) {
+		dev_err(dev, "Failed to store RTC calibration attribute\n");
+		return -EINVAL;
+	}
+
+	retval = ab8500_rtc_set_calibration(dev, calibration);
+
+	return retval ? retval : count;
+}
+
+static ssize_t ab8500_sysfs_show_rtc_calibration(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	int  retval = 0;
+	int  calibration = 0;
+
+	retval = ab8500_rtc_get_calibration(dev, &calibration);
+	if (retval < 0) {
+		dev_err(dev, "Failed to read RTC calibration attribute\n");
+		sprintf(buf, "0\n");
+		return retval;
+	}
+
+	return sprintf(buf, "%d\n", calibration);
+}
+
+static DEVICE_ATTR(rtc_calibration, S_IRUGO | S_IWUSR,
+		   ab8500_sysfs_show_rtc_calibration,
+		   ab8500_sysfs_store_rtc_calibration);
+
+static int ab8500_sysfs_rtc_register(struct device *dev)
+{
+	return device_create_file(dev, &dev_attr_rtc_calibration);
+}
+
+static void ab8500_sysfs_rtc_unregister(struct device *dev)
+{
+	device_remove_file(dev, &dev_attr_rtc_calibration);
+}
+
 static irqreturn_t rtc_alarm_handler(int irq, void *data)
 {
 	struct rtc_device *rtc = data;
@@ -295,7 +398,7 @@ static int __devinit ab8500_rtc_probe(struct platform_device *pdev)
 		return err;
 
 	/* Wait for reset by the PorRtc */
-	msleep(1);
+	usleep_range(1000, 5000);
 
 	err = abx500_get_register_interruptible(&pdev->dev, AB8500_RTC,
 		AB8500_RTC_STAT_REG, &rtc_ctrl);
@@ -308,6 +411,8 @@ static int __devinit ab8500_rtc_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	device_init_wakeup(&pdev->dev, true);
+
 	rtc = rtc_device_register("ab8500-rtc", &pdev->dev, &ab8500_rtc_ops,
 			THIS_MODULE);
 	if (IS_ERR(rtc)) {
@@ -316,8 +421,8 @@ static int __devinit ab8500_rtc_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	err = request_threaded_irq(irq, NULL, rtc_alarm_handler, 0,
-				   "ab8500-rtc", rtc);
+	err = request_threaded_irq(irq, NULL, rtc_alarm_handler,
+		IRQF_NO_SUSPEND, "ab8500-rtc", rtc);
 	if (err < 0) {
 		rtc_device_unregister(rtc);
 		return err;
@@ -325,6 +430,13 @@ static int __devinit ab8500_rtc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, rtc);
 
+
+	err = ab8500_sysfs_rtc_register(&pdev->dev);
+	if (err) {
+		dev_err(&pdev->dev, "sysfs RTC failed to register\n");
+		return err;
+	}
+
 	return 0;
 }
 
@@ -333,6 +445,8 @@ static int __devexit ab8500_rtc_remove(struct platform_device *pdev)
 	struct rtc_device *rtc = platform_get_drvdata(pdev);
 	int irq = platform_get_irq_byname(pdev, "ALARM");
 
+	ab8500_sysfs_rtc_unregister(&pdev->dev);
+
 	free_irq(irq, rtc);
 	rtc_device_unregister(rtc);
 	platform_set_drvdata(pdev, NULL);
@@ -349,18 +463,8 @@ static struct platform_driver ab8500_rtc_driver = {
 	.remove = __devexit_p(ab8500_rtc_remove),
 };
 
-static int __init ab8500_rtc_init(void)
-{
-	return platform_driver_register(&ab8500_rtc_driver);
-}
-
-static void __exit ab8500_rtc_exit(void)
-{
-	platform_driver_unregister(&ab8500_rtc_driver);
-}
+module_platform_driver(ab8500_rtc_driver);
 
-module_init(ab8500_rtc_init);
-module_exit(ab8500_rtc_exit);
 MODULE_AUTHOR("Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>");
 MODULE_DESCRIPTION("AB8500 RTC Driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
index 90d866272c8..abfc1a0c07d 100644
--- a/drivers/rtc/rtc-bfin.c
+++ b/drivers/rtc/rtc-bfin.c
@@ -456,18 +456,7 @@ static struct platform_driver bfin_rtc_driver = {
 	.resume		= bfin_rtc_resume,
 };
 
-static int __init bfin_rtc_init(void)
-{
-	return platform_driver_register(&bfin_rtc_driver);
-}
-
-static void __exit bfin_rtc_exit(void)
-{
-	platform_driver_unregister(&bfin_rtc_driver);
-}
-
-module_init(bfin_rtc_init);
-module_exit(bfin_rtc_exit);
+module_platform_driver(bfin_rtc_driver);
 
 MODULE_DESCRIPTION("Blackfin On-Chip Real Time Clock Driver");
 MODULE_AUTHOR("Mike Frysinger <vapier@gentoo.org>");
diff --git a/drivers/rtc/rtc-bq4802.c b/drivers/rtc/rtc-bq4802.c
index 128270ce355..bf612ef2294 100644
--- a/drivers/rtc/rtc-bq4802.c
+++ b/drivers/rtc/rtc-bq4802.c
@@ -218,15 +218,4 @@ static struct platform_driver bq4802_driver = {
 	.remove		= __devexit_p(bq4802_remove),
 };
 
-static int __init bq4802_init(void)
-{
-	return platform_driver_register(&bq4802_driver);
-}
-
-static void __exit bq4802_exit(void)
-{
-	platform_driver_unregister(&bq4802_driver);
-}
-
-module_init(bq4802_init);
-module_exit(bq4802_exit);
+module_platform_driver(bq4802_driver);
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 05beb6c1ca7..d7782aa0994 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -164,7 +164,7 @@ static inline unsigned char cmos_read_bank2(unsigned char addr)
 static inline void cmos_write_bank2(unsigned char val, unsigned char addr)
 {
 	outb(addr, RTC_PORT(2));
-	outb(val, RTC_PORT(2));
+	outb(val, RTC_PORT(3));
 }
 
 #else
diff --git a/drivers/rtc/rtc-dm355evm.c b/drivers/rtc/rtc-dm355evm.c
index 2322c43af20..d4457afcba8 100644
--- a/drivers/rtc/rtc-dm355evm.c
+++ b/drivers/rtc/rtc-dm355evm.c
@@ -161,16 +161,6 @@ static struct platform_driver rtc_dm355evm_driver = {
 	},
 };
 
-static int __init dm355evm_rtc_init(void)
-{
-	return platform_driver_register(&rtc_dm355evm_driver);
-}
-module_init(dm355evm_rtc_init);
-
-static void __exit dm355evm_rtc_exit(void)
-{
-	platform_driver_unregister(&rtc_dm355evm_driver);
-}
-module_exit(dm355evm_rtc_exit);
+module_platform_driver(rtc_dm355evm_driver);
 
 MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c
index 68e6caf2549..990c3ff489b 100644
--- a/drivers/rtc/rtc-ds1286.c
+++ b/drivers/rtc/rtc-ds1286.c
@@ -396,21 +396,10 @@ static struct platform_driver ds1286_platform_driver = {
 	.remove		= __devexit_p(ds1286_remove),
 };
 
-static int __init ds1286_init(void)
-{
-	return platform_driver_register(&ds1286_platform_driver);
-}
-
-static void __exit ds1286_exit(void)
-{
-	platform_driver_unregister(&ds1286_platform_driver);
-}
+module_platform_driver(ds1286_platform_driver);
 
 MODULE_AUTHOR("Thomas Bogendoerfer <tsbogend@alpha.franken.de>");
 MODULE_DESCRIPTION("DS1286 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
 MODULE_ALIAS("platform:rtc-ds1286");
-
-module_init(ds1286_init);
-module_exit(ds1286_exit);
diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 586c244a05d..761f36bc83a 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -580,20 +580,7 @@ static struct platform_driver ds1511_rtc_driver = {
 	},
 };
 
- static int __init
-ds1511_rtc_init(void)
-{
-	return platform_driver_register(&ds1511_rtc_driver);
-}
-
- static void __exit
-ds1511_rtc_exit(void)
-{
-	platform_driver_unregister(&ds1511_rtc_driver);
-}
-
-module_init(ds1511_rtc_init);
-module_exit(ds1511_rtc_exit);
+module_platform_driver(ds1511_rtc_driver);
 
 MODULE_AUTHOR("Andrew Sharp <andy.sharp@lsi.com>");
 MODULE_DESCRIPTION("Dallas DS1511 RTC driver");
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index 1350029044e..6f0a1b530f2 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -361,18 +361,7 @@ static struct platform_driver ds1553_rtc_driver = {
 	},
 };
 
-static __init int ds1553_init(void)
-{
-	return platform_driver_register(&ds1553_rtc_driver);
-}
-
-static __exit void ds1553_exit(void)
-{
-	platform_driver_unregister(&ds1553_rtc_driver);
-}
-
-module_init(ds1553_init);
-module_exit(ds1553_exit);
+module_platform_driver(ds1553_rtc_driver);
 
 MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
 MODULE_DESCRIPTION("Dallas DS1553 RTC driver");
diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index e3e0f92b60f..76112667c50 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -240,18 +240,7 @@ static struct platform_driver ds1742_rtc_driver = {
 	},
 };
 
-static __init int ds1742_init(void)
-{
-	return platform_driver_register(&ds1742_rtc_driver);
-}
-
-static __exit void ds1742_exit(void)
-{
-	platform_driver_unregister(&ds1742_rtc_driver);
-}
-
-module_init(ds1742_init);
-module_exit(ds1742_exit);
+module_platform_driver(ds1742_rtc_driver);
 
 MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
 MODULE_DESCRIPTION("Dallas DS1742 RTC driver");
diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c
index b6473631d18..05ab227eeff 100644
--- a/drivers/rtc/rtc-jz4740.c
+++ b/drivers/rtc/rtc-jz4740.c
@@ -345,7 +345,7 @@ static const struct dev_pm_ops jz4740_pm_ops = {
 #define JZ4740_RTC_PM_OPS NULL
 #endif  /* CONFIG_PM */
 
-struct platform_driver jz4740_rtc_driver = {
+static struct platform_driver jz4740_rtc_driver = {
 	.probe	 = jz4740_rtc_probe,
 	.remove	 = __devexit_p(jz4740_rtc_remove),
 	.driver	 = {
@@ -355,17 +355,7 @@ struct platform_driver jz4740_rtc_driver = {
 	},
 };
 
-static int __init jz4740_rtc_init(void)
-{
-	return platform_driver_register(&jz4740_rtc_driver);
-}
-module_init(jz4740_rtc_init);
-
-static void __exit jz4740_rtc_exit(void)
-{
-	platform_driver_unregister(&jz4740_rtc_driver);
-}
-module_exit(jz4740_rtc_exit);
+module_platform_driver(jz4740_rtc_driver);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index ae16250c762..ecc1713b2b4 100644
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -396,17 +396,7 @@ static struct platform_driver lpc32xx_rtc_driver = {
 	},
 };
 
-static int __init lpc32xx_rtc_init(void)
-{
-	return platform_driver_register(&lpc32xx_rtc_driver);
-}
-module_init(lpc32xx_rtc_init);
-
-static void __exit lpc32xx_rtc_exit(void)
-{
-	platform_driver_unregister(&lpc32xx_rtc_driver);
-}
-module_exit(lpc32xx_rtc_exit);
+module_platform_driver(lpc32xx_rtc_driver);
 
 MODULE_AUTHOR("Kevin Wells <wellsk40@gmail.com");
 MODULE_DESCRIPTION("RTC driver for the LPC32xx SoC");
diff --git a/drivers/rtc/rtc-m41t93.c b/drivers/rtc/rtc-m41t93.c
index 7317d3b9a3d..ef71132ff20 100644
--- a/drivers/rtc/rtc-m41t93.c
+++ b/drivers/rtc/rtc-m41t93.c
@@ -200,7 +200,6 @@ static int __devexit m41t93_remove(struct spi_device *spi)
 static struct spi_driver m41t93_driver = {
 	.driver = {
 		.name	= "rtc-m41t93",
-		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
 	},
 	.probe	= m41t93_probe,
diff --git a/drivers/rtc/rtc-m41t94.c b/drivers/rtc/rtc-m41t94.c
index e259ed76ae8..2a4721f6179 100644
--- a/drivers/rtc/rtc-m41t94.c
+++ b/drivers/rtc/rtc-m41t94.c
@@ -147,7 +147,6 @@ static int __devexit m41t94_remove(struct spi_device *spi)
 static struct spi_driver m41t94_driver = {
 	.driver = {
 		.name	= "rtc-m41t94",
-		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
 	},
 	.probe	= m41t94_probe,
diff --git a/drivers/rtc/rtc-m48t35.c b/drivers/rtc/rtc-m48t35.c
index 8e2a24e33ed..f9e3b358373 100644
--- a/drivers/rtc/rtc-m48t35.c
+++ b/drivers/rtc/rtc-m48t35.c
@@ -216,21 +216,10 @@ static struct platform_driver m48t35_platform_driver = {
 	.remove		= __devexit_p(m48t35_remove),
 };
 
-static int __init m48t35_init(void)
-{
-	return platform_driver_register(&m48t35_platform_driver);
-}
-
-static void __exit m48t35_exit(void)
-{
-	platform_driver_unregister(&m48t35_platform_driver);
-}
+module_platform_driver(m48t35_platform_driver);
 
 MODULE_AUTHOR("Thomas Bogendoerfer <tsbogend@alpha.franken.de>");
 MODULE_DESCRIPTION("M48T35 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
 MODULE_ALIAS("platform:rtc-m48t35");
-
-module_init(m48t35_init);
-module_exit(m48t35_exit);
diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c
index 28365388fb6..30ebfec9fd2 100644
--- a/drivers/rtc/rtc-m48t59.c
+++ b/drivers/rtc/rtc-m48t59.c
@@ -530,18 +530,7 @@ static struct platform_driver m48t59_rtc_driver = {
 	.remove		= __devexit_p(m48t59_rtc_remove),
 };
 
-static int __init m48t59_rtc_init(void)
-{
-	return platform_driver_register(&m48t59_rtc_driver);
-}
-
-static void __exit m48t59_rtc_exit(void)
-{
-	platform_driver_unregister(&m48t59_rtc_driver);
-}
-
-module_init(m48t59_rtc_init);
-module_exit(m48t59_rtc_exit);
+module_platform_driver(m48t59_rtc_driver);
 
 MODULE_AUTHOR("Mark Zhan <rongkai.zhan@windriver.com>");
 MODULE_DESCRIPTION("M48T59/M48T02/M48T08 RTC driver");
diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c
index f981287d582..863fb3363aa 100644
--- a/drivers/rtc/rtc-m48t86.c
+++ b/drivers/rtc/rtc-m48t86.c
@@ -185,21 +185,10 @@ static struct platform_driver m48t86_rtc_platform_driver = {
 	.remove		= __devexit_p(m48t86_rtc_remove),
 };
 
-static int __init m48t86_rtc_init(void)
-{
-	return platform_driver_register(&m48t86_rtc_platform_driver);
-}
-
-static void __exit m48t86_rtc_exit(void)
-{
-	platform_driver_unregister(&m48t86_rtc_platform_driver);
-}
+module_platform_driver(m48t86_rtc_platform_driver);
 
 MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
 MODULE_DESCRIPTION("M48T86 RTC driver");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRV_VERSION);
 MODULE_ALIAS("platform:rtc-m48t86");
-
-module_init(m48t86_rtc_init);
-module_exit(m48t86_rtc_exit);
diff --git a/drivers/rtc/rtc-max6902.c b/drivers/rtc/rtc-max6902.c
index 0ec3f588a25..1f6b3cc58e8 100644
--- a/drivers/rtc/rtc-max6902.c
+++ b/drivers/rtc/rtc-max6902.c
@@ -154,7 +154,6 @@ static int __devexit max6902_remove(struct spi_device *spi)
 static struct spi_driver max6902_driver = {
 	.driver = {
 		.name	= "rtc-max6902",
-		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
 	},
 	.probe	= max6902_probe,
diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c
index 3bc046f427e..4a5529346b4 100644
--- a/drivers/rtc/rtc-max8925.c
+++ b/drivers/rtc/rtc-max8925.c
@@ -299,17 +299,7 @@ static struct platform_driver max8925_rtc_driver = {
 	.remove		= __devexit_p(max8925_rtc_remove),
 };
 
-static int __init max8925_rtc_init(void)
-{
-	return platform_driver_register(&max8925_rtc_driver);
-}
-module_init(max8925_rtc_init);
-
-static void __exit max8925_rtc_exit(void)
-{
-	platform_driver_unregister(&max8925_rtc_driver);
-}
-module_exit(max8925_rtc_exit);
+module_platform_driver(max8925_rtc_driver);
 
 MODULE_DESCRIPTION("Maxim MAX8925 RTC driver");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c
index 2e48aa60427..7196f438c08 100644
--- a/drivers/rtc/rtc-max8998.c
+++ b/drivers/rtc/rtc-max8998.c
@@ -327,17 +327,7 @@ static struct platform_driver max8998_rtc_driver = {
 	.id_table	= max8998_rtc_id,
 };
 
-static int __init max8998_rtc_init(void)
-{
-	return platform_driver_register(&max8998_rtc_driver);
-}
-module_init(max8998_rtc_init);
-
-static void __exit max8998_rtc_exit(void)
-{
-	platform_driver_unregister(&max8998_rtc_driver);
-}
-module_exit(max8998_rtc_exit);
+module_platform_driver(max8998_rtc_driver);
 
 MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
diff --git a/drivers/rtc/rtc-mc13xxx.c b/drivers/rtc/rtc-mc13xxx.c
index 9d0c3b478d5..546f6850bff 100644
--- a/drivers/rtc/rtc-mc13xxx.c
+++ b/drivers/rtc/rtc-mc13xxx.c
@@ -399,7 +399,7 @@ static int __exit mc13xxx_rtc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-const struct platform_device_id mc13xxx_rtc_idtable[] = {
+static const struct platform_device_id mc13xxx_rtc_idtable[] = {
 	{
 		.name = "mc13783-rtc",
 	}, {
diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index da60915818b..9d3caccfc25 100644
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -418,17 +418,7 @@ static struct platform_driver mpc5121_rtc_driver = {
 	.remove = __devexit_p(mpc5121_rtc_remove),
 };
 
-static int __init mpc5121_rtc_init(void)
-{
-	return platform_driver_register(&mpc5121_rtc_driver);
-}
-module_init(mpc5121_rtc_init);
-
-static void __exit mpc5121_rtc_exit(void)
-{
-	platform_driver_unregister(&mpc5121_rtc_driver);
-}
-module_exit(mpc5121_rtc_exit);
+module_platform_driver(mpc5121_rtc_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("John Rigby <jcrigby@gmail.com>");
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index bb21f443fb7..6cd6c723534 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -537,18 +537,7 @@ static struct platform_driver vrtc_mrst_platform_driver = {
 	}
 };
 
-static int __init vrtc_mrst_init(void)
-{
-	return platform_driver_register(&vrtc_mrst_platform_driver);
-}
-
-static void __exit vrtc_mrst_exit(void)
-{
-	platform_driver_unregister(&vrtc_mrst_platform_driver);
-}
-
-module_init(vrtc_mrst_init);
-module_exit(vrtc_mrst_exit);
+module_platform_driver(vrtc_mrst_platform_driver);
 
 MODULE_AUTHOR("Jacob Pan; Feng Tang");
 MODULE_DESCRIPTION("Driver for Moorestown virtual RTC");
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 39e41fbdf08..5e1d64ee522 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -155,7 +155,6 @@ static int rtc_update_alarm(struct device *dev, struct rtc_time *alrm)
 {
 	struct rtc_time alarm_tm, now_tm;
 	unsigned long now, time;
-	int ret;
 	struct platform_device *pdev = to_platform_device(dev);
 	struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
 	void __iomem *ioaddr = pdata->ioaddr;
@@ -168,21 +167,33 @@ static int rtc_update_alarm(struct device *dev, struct rtc_time *alrm)
 	alarm_tm.tm_hour = alrm->tm_hour;
 	alarm_tm.tm_min = alrm->tm_min;
 	alarm_tm.tm_sec = alrm->tm_sec;
-	rtc_tm_to_time(&now_tm, &now);
 	rtc_tm_to_time(&alarm_tm, &time);
 
-	if (time < now) {
-		time += 60 * 60 * 24;
-		rtc_time_to_tm(time, &alarm_tm);
-	}
-
-	ret = rtc_tm_to_time(&alarm_tm, &time);
-
 	/* clear all the interrupt status bits */
 	writew(readw(ioaddr + RTC_RTCISR), ioaddr + RTC_RTCISR);
 	set_alarm_or_time(dev, MXC_RTC_ALARM, time);
 
-	return ret;
+	return 0;
+}
+
+static void mxc_rtc_irq_enable(struct device *dev, unsigned int bit,
+				unsigned int enabled)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
+	void __iomem *ioaddr = pdata->ioaddr;
+	u32 reg;
+
+	spin_lock_irq(&pdata->rtc->irq_lock);
+	reg = readw(ioaddr + RTC_RTCIENR);
+
+	if (enabled)
+		reg |= bit;
+	else
+		reg &= ~bit;
+
+	writew(reg, ioaddr + RTC_RTCIENR);
+	spin_unlock_irq(&pdata->rtc->irq_lock);
 }
 
 /* This function is the RTC interrupt service routine. */
@@ -199,13 +210,12 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id)
 	/* clear interrupt sources */
 	writew(status, ioaddr + RTC_RTCISR);
 
-	/* clear alarm interrupt if it has occurred */
-	if (status & RTC_ALM_BIT)
-		status &= ~RTC_ALM_BIT;
-
 	/* update irq data & counter */
-	if (status & RTC_ALM_BIT)
+	if (status & RTC_ALM_BIT) {
 		events |= (RTC_AF | RTC_IRQF);
+		/* RTC alarm should be one-shot */
+		mxc_rtc_irq_enable(&pdev->dev, RTC_ALM_BIT, 0);
+	}
 
 	if (status & RTC_1HZ_BIT)
 		events |= (RTC_UF | RTC_IRQF);
@@ -213,9 +223,6 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id)
 	if (status & PIT_ALL_ON)
 		events |= (RTC_PF | RTC_IRQF);
 
-	if ((status & RTC_ALM_BIT) && rtc_valid_tm(&pdata->g_rtc_alarm))
-		rtc_update_alarm(&pdev->dev, &pdata->g_rtc_alarm);
-
 	rtc_update_irq(pdata->rtc, 1, events);
 	spin_unlock_irq(&pdata->rtc->irq_lock);
 
@@ -242,26 +249,6 @@ static void mxc_rtc_release(struct device *dev)
 	spin_unlock_irq(&pdata->rtc->irq_lock);
 }
 
-static void mxc_rtc_irq_enable(struct device *dev, unsigned int bit,
-				unsigned int enabled)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
-	void __iomem *ioaddr = pdata->ioaddr;
-	u32 reg;
-
-	spin_lock_irq(&pdata->rtc->irq_lock);
-	reg = readw(ioaddr + RTC_RTCIENR);
-
-	if (enabled)
-		reg |= bit;
-	else
-		reg &= ~bit;
-
-	writew(reg, ioaddr + RTC_RTCIENR);
-	spin_unlock_irq(&pdata->rtc->irq_lock);
-}
-
 static int mxc_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 {
 	mxc_rtc_irq_enable(dev, RTC_ALM_BIT, enabled);
@@ -290,6 +277,17 @@ static int mxc_rtc_read_time(struct device *dev, struct rtc_time *tm)
  */
 static int mxc_rtc_set_mmss(struct device *dev, unsigned long time)
 {
+	/*
+	 * TTC_DAYR register is 9-bit in MX1 SoC, save time and day of year only
+	 */
+	if (cpu_is_mx1()) {
+		struct rtc_time tm;
+
+		rtc_time_to_tm(time, &tm);
+		tm.tm_year = 70;
+		rtc_tm_to_time(&tm, &time);
+	}
+
 	/* Avoid roll-over from reading the different registers */
 	do {
 		set_alarm_or_time(dev, MXC_RTC_TIME, time);
@@ -324,21 +322,7 @@ static int mxc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 	struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
 	int ret;
 
-	if (rtc_valid_tm(&alrm->time)) {
-		if (alrm->time.tm_sec > 59 ||
-		    alrm->time.tm_hour > 23 ||
-		    alrm->time.tm_min > 59)
-			return -EINVAL;
-
-		ret = rtc_update_alarm(dev, &alrm->time);
-	} else {
-		ret = rtc_valid_tm(&alrm->time);
-		if (ret)
-			return ret;
-
-		ret = rtc_update_alarm(dev, &alrm->time);
-	}
-
+	ret = rtc_update_alarm(dev, &alrm->time);
 	if (ret)
 		return ret;
 
@@ -424,6 +408,9 @@ static int __init mxc_rtc_probe(struct platform_device *pdev)
 		pdata->irq = -1;
 	}
 
+	if (pdata->irq >=0)
+		device_init_wakeup(&pdev->dev, 1);
+
 	rtc = rtc_device_register(pdev->name, &pdev->dev, &mxc_rtc_ops,
 				  THIS_MODULE);
 	if (IS_ERR(rtc)) {
@@ -459,9 +446,39 @@ static int __exit mxc_rtc_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int mxc_rtc_suspend(struct device *dev)
+{
+	struct rtc_plat_data *pdata = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		enable_irq_wake(pdata->irq);
+
+	return 0;
+}
+
+static int mxc_rtc_resume(struct device *dev)
+{
+	struct rtc_plat_data *pdata = dev_get_drvdata(dev);
+
+	if (device_may_wakeup(dev))
+		disable_irq_wake(pdata->irq);
+
+	return 0;
+}
+
+static struct dev_pm_ops mxc_rtc_pm_ops = {
+	.suspend	= mxc_rtc_suspend,
+	.resume		= mxc_rtc_resume,
+};
+#endif
+
 static struct platform_driver mxc_rtc_driver = {
 	.driver = {
 		   .name	= "mxc_rtc",
+#ifdef CONFIG_PM
+		   .pm		= &mxc_rtc_pm_ops,
+#endif
 		   .owner	= THIS_MODULE,
 	},
 	.remove		= __exit_p(mxc_rtc_remove),
diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index 2ee3bbf7e5e..b46c4004d8f 100644
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -340,7 +340,6 @@ static int __devexit pcf2123_remove(struct spi_device *spi)
 static struct spi_driver pcf2123_driver = {
 	.driver	= {
 			.name	= "rtc-pcf2123",
-			.bus	= &spi_bus_type,
 			.owner	= THIS_MODULE,
 	},
 	.probe	= pcf2123_probe,
diff --git a/drivers/rtc/rtc-pcf50633.c b/drivers/rtc/rtc-pcf50633.c
index 0c423892923..a20202f9ee5 100644
--- a/drivers/rtc/rtc-pcf50633.c
+++ b/drivers/rtc/rtc-pcf50633.c
@@ -294,17 +294,7 @@ static struct platform_driver pcf50633_rtc_driver = {
 	.remove = __devexit_p(pcf50633_rtc_remove),
 };
 
-static int __init pcf50633_rtc_init(void)
-{
-	return platform_driver_register(&pcf50633_rtc_driver);
-}
-module_init(pcf50633_rtc_init);
-
-static void __exit pcf50633_rtc_exit(void)
-{
-	platform_driver_unregister(&pcf50633_rtc_driver);
-}
-module_exit(pcf50633_rtc_exit);
+module_platform_driver(pcf50633_rtc_driver);
 
 MODULE_DESCRIPTION("PCF50633 RTC driver");
 MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
index d420e9d877e..9f1d6bcbdf6 100644
--- a/drivers/rtc/rtc-pm8xxx.c
+++ b/drivers/rtc/rtc-pm8xxx.c
@@ -532,17 +532,7 @@ static struct platform_driver pm8xxx_rtc_driver = {
 	},
 };
 
-static int __init pm8xxx_rtc_init(void)
-{
-	return platform_driver_register(&pm8xxx_rtc_driver);
-}
-module_init(pm8xxx_rtc_init);
-
-static void __exit pm8xxx_rtc_exit(void)
-{
-	platform_driver_unregister(&pm8xxx_rtc_driver);
-}
-module_exit(pm8xxx_rtc_exit);
+module_platform_driver(pm8xxx_rtc_driver);
 
 MODULE_ALIAS("platform:rtc-pm8xxx");
 MODULE_DESCRIPTION("PMIC8xxx RTC driver");
diff --git a/drivers/rtc/rtc-rs5c348.c b/drivers/rtc/rtc-rs5c348.c
index 971bc8e08da..ce2ca8523dd 100644
--- a/drivers/rtc/rtc-rs5c348.c
+++ b/drivers/rtc/rtc-rs5c348.c
@@ -229,7 +229,6 @@ static int __devexit rs5c348_remove(struct spi_device *spi)
 static struct spi_driver rs5c348_driver = {
 	.driver = {
 		.name	= "rtc-rs5c348",
-		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
 	},
 	.probe	= rs5c348_probe,
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 175067a17c4..aef40bd2957 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -673,21 +673,7 @@ static struct platform_driver s3c_rtc_driver = {
 	},
 };
 
-static char __initdata banner[] = "S3C24XX RTC, (c) 2004,2006 Simtec Electronics\n";
-
-static int __init s3c_rtc_init(void)
-{
-	printk(banner);
-	return platform_driver_register(&s3c_rtc_driver);
-}
-
-static void __exit s3c_rtc_exit(void)
-{
-	platform_driver_unregister(&s3c_rtc_driver);
-}
-
-module_init(s3c_rtc_init);
-module_exit(s3c_rtc_exit);
+module_platform_driver(s3c_rtc_driver);
 
 MODULE_DESCRIPTION("Samsung S3C RTC Driver");
 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index fc1ffe97fca..4595d3e645a 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -435,18 +435,7 @@ static struct platform_driver sa1100_rtc_driver = {
 	},
 };
 
-static int __init sa1100_rtc_init(void)
-{
-	return platform_driver_register(&sa1100_rtc_driver);
-}
-
-static void __exit sa1100_rtc_exit(void)
-{
-	platform_driver_unregister(&sa1100_rtc_driver);
-}
-
-module_init(sa1100_rtc_init);
-module_exit(sa1100_rtc_exit);
+module_platform_driver(sa1100_rtc_driver);
 
 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
 MODULE_DESCRIPTION("SA11x0/PXA2xx Realtime Clock Driver (RTC)");
diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c
index 893bac2bb21..19a28a671a8 100644
--- a/drivers/rtc/rtc-spear.c
+++ b/drivers/rtc/rtc-spear.c
@@ -516,17 +516,7 @@ static struct platform_driver spear_rtc_driver = {
 	},
 };
 
-static int __init rtc_init(void)
-{
-	return platform_driver_register(&spear_rtc_driver);
-}
-module_init(rtc_init);
-
-static void __exit rtc_exit(void)
-{
-	platform_driver_unregister(&spear_rtc_driver);
-}
-module_exit(rtc_exit);
+module_platform_driver(spear_rtc_driver);
 
 MODULE_ALIAS("platform:rtc-spear");
 MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>");
diff --git a/drivers/rtc/rtc-stk17ta8.c b/drivers/rtc/rtc-stk17ta8.c
index ed3e9b59903..7621116bd20 100644
--- a/drivers/rtc/rtc-stk17ta8.c
+++ b/drivers/rtc/rtc-stk17ta8.c
@@ -370,18 +370,7 @@ static struct platform_driver stk17ta8_rtc_driver = {
 	},
 };
 
-static __init int stk17ta8_init(void)
-{
-	return platform_driver_register(&stk17ta8_rtc_driver);
-}
-
-static __exit void stk17ta8_exit(void)
-{
-	platform_driver_unregister(&stk17ta8_rtc_driver);
-}
-
-module_init(stk17ta8_init);
-module_exit(stk17ta8_exit);
+module_platform_driver(stk17ta8_rtc_driver);
 
 MODULE_AUTHOR("Thomas Hommel <thomas.hommel@ge.com>");
 MODULE_DESCRIPTION("Simtek STK17TA8 RTC driver");
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 7315068daa5..10287865e33 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -276,18 +276,7 @@ static struct platform_driver stmp3xxx_rtcdrv = {
 	},
 };
 
-static int __init stmp3xxx_rtc_init(void)
-{
-	return platform_driver_register(&stmp3xxx_rtcdrv);
-}
-
-static void __exit stmp3xxx_rtc_exit(void)
-{
-	platform_driver_unregister(&stmp3xxx_rtcdrv);
-}
-
-module_init(stmp3xxx_rtc_init);
-module_exit(stmp3xxx_rtc_exit);
+module_platform_driver(stmp3xxx_rtcdrv);
 
 MODULE_DESCRIPTION("STMP3xxx RTC Driver");
 MODULE_AUTHOR("dmitry pervushin <dpervushin@embeddedalley.com> and "
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 20687d55e7a..d43b4f6eb4e 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -550,6 +550,11 @@ static int twl_rtc_resume(struct platform_device *pdev)
 #define twl_rtc_resume  NULL
 #endif
 
+static const struct of_device_id twl_rtc_of_match[] = {
+	{.compatible = "ti,twl4030-rtc", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, twl_rtc_of_match);
 MODULE_ALIAS("platform:twl_rtc");
 
 static struct platform_driver twl4030rtc_driver = {
@@ -559,8 +564,9 @@ static struct platform_driver twl4030rtc_driver = {
 	.suspend	= twl_rtc_suspend,
 	.resume		= twl_rtc_resume,
 	.driver		= {
-		.owner	= THIS_MODULE,
-		.name	= "twl_rtc",
+		.owner		= THIS_MODULE,
+		.name		= "twl_rtc",
+		.of_match_table = twl_rtc_of_match,
 	},
 };
 
diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c
index f71c3ce1803..bca5d677bc8 100644
--- a/drivers/rtc/rtc-v3020.c
+++ b/drivers/rtc/rtc-v3020.c
@@ -393,18 +393,7 @@ static struct platform_driver rtc_device_driver = {
 	},
 };
 
-static __init int v3020_init(void)
-{
-	return platform_driver_register(&rtc_device_driver);
-}
-
-static __exit void v3020_exit(void)
-{
-	platform_driver_unregister(&rtc_device_driver);
-}
-
-module_init(v3020_init);
-module_exit(v3020_exit);
+module_platform_driver(rtc_device_driver);
 
 MODULE_DESCRIPTION("V3020 RTC");
 MODULE_AUTHOR("Raphael Assenat");
diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index c5698cda366..fcbfdda2993 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -405,15 +405,4 @@ static struct platform_driver rtc_platform_driver = {
 	},
 };
 
-static int __init vr41xx_rtc_init(void)
-{
-	return platform_driver_register(&rtc_platform_driver);
-}
-
-static void __exit vr41xx_rtc_exit(void)
-{
-	platform_driver_unregister(&rtc_platform_driver);
-}
-
-module_init(vr41xx_rtc_init);
-module_exit(vr41xx_rtc_exit);
+module_platform_driver(rtc_platform_driver);
diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c
index f93f412423c..9e94fb147c2 100644
--- a/drivers/rtc/rtc-vt8500.c
+++ b/drivers/rtc/rtc-vt8500.c
@@ -311,17 +311,7 @@ static struct platform_driver vt8500_rtc_driver = {
 	},
 };
 
-static int __init vt8500_rtc_init(void)
-{
-	return platform_driver_register(&vt8500_rtc_driver);
-}
-module_init(vt8500_rtc_init);
-
-static void __exit vt8500_rtc_exit(void)
-{
-	platform_driver_unregister(&vt8500_rtc_driver);
-}
-module_exit(vt8500_rtc_exit);
+module_platform_driver(vt8500_rtc_driver);
 
 MODULE_AUTHOR("Alexey Charkov <alchark@gmail.com>");
 MODULE_DESCRIPTION("VIA VT8500 SoC Realtime Clock Driver (RTC)");
diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
index bdc909bd56d..3b6e6a67e76 100644
--- a/drivers/rtc/rtc-wm831x.c
+++ b/drivers/rtc/rtc-wm831x.c
@@ -324,15 +324,6 @@ static irqreturn_t wm831x_alm_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static irqreturn_t wm831x_per_irq(int irq, void *data)
-{
-	struct wm831x_rtc *wm831x_rtc = data;
-
-	rtc_update_irq(wm831x_rtc->rtc, 1, RTC_IRQF | RTC_UF);
-
-	return IRQ_HANDLED;
-}
-
 static const struct rtc_class_ops wm831x_rtc_ops = {
 	.read_time = wm831x_rtc_readtime,
 	.set_mmss = wm831x_rtc_set_mmss,
@@ -405,11 +396,10 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
 {
 	struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
 	struct wm831x_rtc *wm831x_rtc;
-	int per_irq = platform_get_irq_byname(pdev, "PER");
 	int alm_irq = platform_get_irq_byname(pdev, "ALM");
 	int ret = 0;
 
-	wm831x_rtc = kzalloc(sizeof(*wm831x_rtc), GFP_KERNEL);
+	wm831x_rtc = devm_kzalloc(&pdev->dev, sizeof(*wm831x_rtc), GFP_KERNEL);
 	if (wm831x_rtc == NULL)
 		return -ENOMEM;
 
@@ -433,14 +423,6 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	ret = request_threaded_irq(per_irq, NULL, wm831x_per_irq,
-				   IRQF_TRIGGER_RISING, "RTC period",
-				   wm831x_rtc);
-	if (ret != 0) {
-		dev_err(&pdev->dev, "Failed to request periodic IRQ %d: %d\n",
-			per_irq, ret);
-	}
-
 	ret = request_threaded_irq(alm_irq, NULL, wm831x_alm_irq,
 				   IRQF_TRIGGER_RISING, "RTC alarm",
 				   wm831x_rtc);
@@ -452,20 +434,16 @@ static int wm831x_rtc_probe(struct platform_device *pdev)
 	return 0;
 
 err:
-	kfree(wm831x_rtc);
 	return ret;
 }
 
 static int __devexit wm831x_rtc_remove(struct platform_device *pdev)
 {
 	struct wm831x_rtc *wm831x_rtc = platform_get_drvdata(pdev);
-	int per_irq = platform_get_irq_byname(pdev, "PER");
 	int alm_irq = platform_get_irq_byname(pdev, "ALM");
 
 	free_irq(alm_irq, wm831x_rtc);
-	free_irq(per_irq, wm831x_rtc);
 	rtc_device_unregister(wm831x_rtc->rtc);
-	kfree(wm831x_rtc);
 
 	return 0;
 }
@@ -490,17 +468,7 @@ static struct platform_driver wm831x_rtc_driver = {
 	},
 };
 
-static int __init wm831x_rtc_init(void)
-{
-	return platform_driver_register(&wm831x_rtc_driver);
-}
-module_init(wm831x_rtc_init);
-
-static void __exit wm831x_rtc_exit(void)
-{
-	platform_driver_unregister(&wm831x_rtc_driver);
-}
-module_exit(wm831x_rtc_exit);
+module_platform_driver(wm831x_rtc_driver);
 
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 MODULE_DESCRIPTION("RTC driver for the WM831x series PMICs");
diff --git a/drivers/rtc/rtc-wm8350.c b/drivers/rtc/rtc-wm8350.c
index 66421426e40..c2e52d15abb 100644
--- a/drivers/rtc/rtc-wm8350.c
+++ b/drivers/rtc/rtc-wm8350.c
@@ -486,17 +486,7 @@ static struct platform_driver wm8350_rtc_driver = {
 	},
 };
 
-static int __init wm8350_rtc_init(void)
-{
-	return platform_driver_register(&wm8350_rtc_driver);
-}
-module_init(wm8350_rtc_init);
-
-static void __exit wm8350_rtc_exit(void)
-{
-	platform_driver_unregister(&wm8350_rtc_driver);
-}
-module_exit(wm8350_rtc_exit);
+module_platform_driver(wm8350_rtc_driver);
 
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 MODULE_DESCRIPTION("RTC driver for the WM8350");
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c
index 1105fa1ed7f..a1376dc73d7 100644
--- a/drivers/video/backlight/88pm860x_bl.c
+++ b/drivers/video/backlight/88pm860x_bl.c
@@ -270,17 +270,7 @@ static struct platform_driver pm860x_backlight_driver = {
 	.remove		= pm860x_backlight_remove,
 };
 
-static int __init pm860x_backlight_init(void)
-{
-	return platform_driver_register(&pm860x_backlight_driver);
-}
-module_init(pm860x_backlight_init);
-
-static void __exit pm860x_backlight_exit(void)
-{
-	platform_driver_unregister(&pm860x_backlight_driver);
-}
-module_exit(pm860x_backlight_exit);
+module_platform_driver(pm860x_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for Marvell Semiconductor 88PM8606");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 278aeaa9250..681b36929fe 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -280,14 +280,6 @@ config BACKLIGHT_WM831X
 	  If you have a backlight driven by the ISINK and DCDC of a
 	  WM831x PMIC say y to enable the backlight driver for it.
 
-config BACKLIGHT_ADX
-	tristate "Avionic Design Xanthos Backlight Driver"
-	depends on ARCH_PXA_ADX
-	default y
-	help
-	  Say Y to enable the backlight driver on Avionic Design Xanthos-based
-	  boards.
-
 config BACKLIGHT_ADP5520
 	tristate "Backlight Driver for ADP5520/ADP5501 using WLED"
 	depends on PMIC_ADP5520
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index fdd1fc4b277..af5cf654ec7 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -32,7 +32,6 @@ obj-$(CONFIG_BACKLIGHT_APPLE)	+= apple_bl.o
 obj-$(CONFIG_BACKLIGHT_TOSA)	+= tosa_bl.o
 obj-$(CONFIG_BACKLIGHT_SAHARA)	+= kb3886_bl.o
 obj-$(CONFIG_BACKLIGHT_WM831X)	+= wm831x_bl.o
-obj-$(CONFIG_BACKLIGHT_ADX)    += adx_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP5520)	+= adp5520_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP8860)	+= adp8860_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP8870)	+= adp8870_bl.o
diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index dfb763e9147..2e630bf1164 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c
@@ -384,17 +384,7 @@ static struct platform_driver adp5520_bl_driver = {
 	.resume		= adp5520_bl_resume,
 };
 
-static int __init adp5520_bl_init(void)
-{
-	return platform_driver_register(&adp5520_bl_driver);
-}
-module_init(adp5520_bl_init);
-
-static void __exit adp5520_bl_exit(void)
-{
-	platform_driver_unregister(&adp5520_bl_driver);
-}
-module_exit(adp5520_bl_exit);
+module_platform_driver(adp5520_bl_driver);
 
 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
 MODULE_DESCRIPTION("ADP5520(01) Backlight Driver");
diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c
deleted file mode 100644
index c861c41af44..00000000000
--- a/drivers/video/backlight/adx_bl.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * linux/drivers/video/backlight/adx.c
- *
- * Copyright (C) 2009 Avionic Design GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Written by Thierry Reding <thierry.reding@avionic-design.de>
- */
-
-#include <linux/backlight.h>
-#include <linux/fb.h>
-#include <linux/gfp.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-
-/* register definitions */
-#define ADX_BACKLIGHT_CONTROL		0x00
-#define ADX_BACKLIGHT_CONTROL_ENABLE	(1 << 0)
-#define ADX_BACKLIGHT_BRIGHTNESS	0x08
-#define ADX_BACKLIGHT_STATUS		0x10
-#define ADX_BACKLIGHT_ERROR		0x18
-
-struct adxbl {
-	void __iomem *base;
-};
-
-static int adx_backlight_update_status(struct backlight_device *bldev)
-{
-	struct adxbl *bl = bl_get_data(bldev);
-	u32 value;
-
-	value = bldev->props.brightness;
-	writel(value, bl->base + ADX_BACKLIGHT_BRIGHTNESS);
-
-	value = readl(bl->base + ADX_BACKLIGHT_CONTROL);
-
-	if (bldev->props.state & BL_CORE_FBBLANK)
-		value &= ~ADX_BACKLIGHT_CONTROL_ENABLE;
-	else
-		value |= ADX_BACKLIGHT_CONTROL_ENABLE;
-
-	writel(value, bl->base + ADX_BACKLIGHT_CONTROL);
-
-	return 0;
-}
-
-static int adx_backlight_get_brightness(struct backlight_device *bldev)
-{
-	struct adxbl *bl = bl_get_data(bldev);
-	u32 brightness;
-
-	brightness = readl(bl->base + ADX_BACKLIGHT_BRIGHTNESS);
-	return brightness & 0xff;
-}
-
-static int adx_backlight_check_fb(struct backlight_device *bldev, struct fb_info *fb)
-{
-	return 1;
-}
-
-static const struct backlight_ops adx_backlight_ops = {
-	.options = 0,
-	.update_status = adx_backlight_update_status,
-	.get_brightness = adx_backlight_get_brightness,
-	.check_fb = adx_backlight_check_fb,
-};
-
-static int __devinit adx_backlight_probe(struct platform_device *pdev)
-{
-	struct backlight_properties props;
-	struct backlight_device *bldev;
-	struct resource *res;
-	struct adxbl *bl;
-	int ret = 0;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	res = devm_request_mem_region(&pdev->dev, res->start,
-			resource_size(res), res->name);
-	if (!res) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	bl = devm_kzalloc(&pdev->dev, sizeof(*bl), GFP_KERNEL);
-	if (!bl) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	bl->base = devm_ioremap_nocache(&pdev->dev, res->start,
-			resource_size(res));
-	if (!bl->base) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	memset(&props, 0, sizeof(struct backlight_properties));
-	props.type = BACKLIGHT_RAW;
-	props.max_brightness = 0xff;
-	bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev,
-					  bl, &adx_backlight_ops, &props);
-	if (IS_ERR(bldev)) {
-		ret = PTR_ERR(bldev);
-		goto out;
-	}
-
-	bldev->props.brightness = 0xff;
-	bldev->props.power = FB_BLANK_UNBLANK;
-
-	platform_set_drvdata(pdev, bldev);
-
-out:
-	return ret;
-}
-
-static int __devexit adx_backlight_remove(struct platform_device *pdev)
-{
-	struct backlight_device *bldev;
-	int ret = 0;
-
-	bldev = platform_get_drvdata(pdev);
-	bldev->props.power = FB_BLANK_UNBLANK;
-	bldev->props.brightness = 0xff;
-	backlight_update_status(bldev);
-	backlight_device_unregister(bldev);
-	platform_set_drvdata(pdev, NULL);
-
-	return ret;
-}
-
-#ifdef CONFIG_PM
-static int adx_backlight_suspend(struct platform_device *pdev,
-		pm_message_t state)
-{
-	return 0;
-}
-
-static int adx_backlight_resume(struct platform_device *pdev)
-{
-	return 0;
-}
-#else
-#define adx_backlight_suspend NULL
-#define adx_backlight_resume NULL
-#endif
-
-static struct platform_driver adx_backlight_driver = {
-	.probe = adx_backlight_probe,
-	.remove = __devexit_p(adx_backlight_remove),
-	.suspend = adx_backlight_suspend,
-	.resume = adx_backlight_resume,
-	.driver = {
-		.name = "adx-backlight",
-		.owner = THIS_MODULE,
-	},
-};
-
-static int __init adx_backlight_init(void)
-{
-	return platform_driver_register(&adx_backlight_driver);
-}
-
-static void __exit adx_backlight_exit(void)
-{
-	platform_driver_unregister(&adx_backlight_driver);
-}
-
-module_init(adx_backlight_init);
-module_exit(adx_backlight_exit);
-
-MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
-MODULE_DESCRIPTION("Avionic Design Xanthos Backlight Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 7363c1b169e..bf5b1ece716 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -102,7 +102,7 @@ static void backlight_generate_event(struct backlight_device *bd,
 }
 
 static ssize_t backlight_show_power(struct device *dev,
-		struct device_attribute *attr,char *buf)
+		struct device_attribute *attr, char *buf)
 {
 	struct backlight_device *bd = to_backlight_device(dev);
 
@@ -116,7 +116,7 @@ static ssize_t backlight_store_power(struct device *dev,
 	struct backlight_device *bd = to_backlight_device(dev);
 	unsigned long power;
 
-	rc = strict_strtoul(buf, 0, &power);
+	rc = kstrtoul(buf, 0, &power);
 	if (rc)
 		return rc;
 
@@ -150,7 +150,7 @@ static ssize_t backlight_store_brightness(struct device *dev,
 	struct backlight_device *bd = to_backlight_device(dev);
 	unsigned long brightness;
 
-	rc = strict_strtoul(buf, 0, &brightness);
+	rc = kstrtoul(buf, 0, &brightness);
 	if (rc)
 		return rc;
 
diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c
index d68f14bbb68..abb4a06268f 100644
--- a/drivers/video/backlight/da903x_bl.c
+++ b/drivers/video/backlight/da903x_bl.c
@@ -199,17 +199,7 @@ static struct platform_driver da903x_backlight_driver = {
 	.remove		= da903x_backlight_remove,
 };
 
-static int __init da903x_backlight_init(void)
-{
-	return platform_driver_register(&da903x_backlight_driver);
-}
-module_init(da903x_backlight_init);
-
-static void __exit da903x_backlight_exit(void)
-{
-	platform_driver_unregister(&da903x_backlight_driver);
-}
-module_exit(da903x_backlight_exit);
+module_platform_driver(da903x_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for Dialog Semiconductor DA9030/DA9034");
 MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
diff --git a/drivers/video/backlight/ep93xx_bl.c b/drivers/video/backlight/ep93xx_bl.c
index c74a6f4baa1..b62b8b9063b 100644
--- a/drivers/video/backlight/ep93xx_bl.c
+++ b/drivers/video/backlight/ep93xx_bl.c
@@ -13,7 +13,6 @@
 
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/module.h>
 #include <linux/io.h>
 #include <linux/fb.h>
 #include <linux/backlight.h>
@@ -144,17 +143,7 @@ static struct platform_driver ep93xxbl_driver = {
 	.resume		= ep93xxbl_resume,
 };
 
-static int __init ep93xxbl_init(void)
-{
-	return platform_driver_register(&ep93xxbl_driver);
-}
-module_init(ep93xxbl_init);
-
-static void __exit ep93xxbl_exit(void)
-{
-	platform_driver_unregister(&ep93xxbl_driver);
-}
-module_exit(ep93xxbl_exit);
+module_platform_driver(ep93xxbl_driver);
 
 MODULE_DESCRIPTION("EP93xx Backlight Driver");
 MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c
index adb191466d6..9ce6170c186 100644
--- a/drivers/video/backlight/generic_bl.c
+++ b/drivers/video/backlight/generic_bl.c
@@ -132,18 +132,7 @@ static struct platform_driver genericbl_driver = {
 	},
 };
 
-static int __init genericbl_init(void)
-{
-	return platform_driver_register(&genericbl_driver);
-}
-
-static void __exit genericbl_exit(void)
-{
-	platform_driver_unregister(&genericbl_driver);
-}
-
-module_init(genericbl_init);
-module_exit(genericbl_exit);
+module_platform_driver(genericbl_driver);
 
 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
 MODULE_DESCRIPTION("Generic Backlight Driver");
diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c
index de65d80159b..2f8af5d786a 100644
--- a/drivers/video/backlight/jornada720_bl.c
+++ b/drivers/video/backlight/jornada720_bl.c
@@ -147,19 +147,8 @@ static struct platform_driver jornada_bl_driver = {
 	},
 };
 
-static int __init jornada_bl_init(void)
-{
-	return platform_driver_register(&jornada_bl_driver);
-}
-
-static void __exit jornada_bl_exit(void)
-{
-	platform_driver_unregister(&jornada_bl_driver);
-}
+module_platform_driver(jornada_bl_driver);
 
 MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson>");
 MODULE_DESCRIPTION("HP Jornada 710/720/728 Backlight driver");
 MODULE_LICENSE("GPL");
-
-module_init(jornada_bl_init);
-module_exit(jornada_bl_exit);
diff --git a/drivers/video/backlight/jornada720_lcd.c b/drivers/video/backlight/jornada720_lcd.c
index d2ff658b414..22d231a17e3 100644
--- a/drivers/video/backlight/jornada720_lcd.c
+++ b/drivers/video/backlight/jornada720_lcd.c
@@ -135,19 +135,8 @@ static struct platform_driver jornada_lcd_driver = {
 	},
 };
 
-static int __init jornada_lcd_init(void)
-{
-	return platform_driver_register(&jornada_lcd_driver);
-}
-
-static void __exit jornada_lcd_exit(void)
-{
-	platform_driver_unregister(&jornada_lcd_driver);
-}
+module_platform_driver(jornada_lcd_driver);
 
 MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
 MODULE_DESCRIPTION("HP Jornada 710/720/728 LCD driver");
 MODULE_LICENSE("GPL");
-
-module_init(jornada_lcd_init);
-module_exit(jornada_lcd_exit);
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 71a11cadffc..79c1b0d609a 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -97,19 +97,16 @@ static ssize_t lcd_store_power(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int rc = -ENXIO;
-	char *endp;
 	struct lcd_device *ld = to_lcd_device(dev);
-	int power = simple_strtoul(buf, &endp, 0);
-	size_t size = endp - buf;
+	unsigned long power;
 
-	if (isspace(*endp))
-		size++;
-	if (size != count)
-		return -EINVAL;
+	rc = kstrtoul(buf, 0, &power);
+	if (rc)
+		return rc;
 
 	mutex_lock(&ld->ops_lock);
 	if (ld->ops && ld->ops->set_power) {
-		pr_debug("lcd: set power to %d\n", power);
+		pr_debug("lcd: set power to %lu\n", power);
 		ld->ops->set_power(ld, power);
 		rc = count;
 	}
@@ -136,19 +133,16 @@ static ssize_t lcd_store_contrast(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int rc = -ENXIO;
-	char *endp;
 	struct lcd_device *ld = to_lcd_device(dev);
-	int contrast = simple_strtoul(buf, &endp, 0);
-	size_t size = endp - buf;
+	unsigned long contrast;
 
-	if (isspace(*endp))
-		size++;
-	if (size != count)
-		return -EINVAL;
+	rc = kstrtoul(buf, 0, &contrast);
+	if (rc)
+		return rc;
 
 	mutex_lock(&ld->ops_lock);
 	if (ld->ops && ld->ops->set_contrast) {
-		pr_debug("lcd: set contrast to %d\n", contrast);
+		pr_debug("lcd: set contrast to %lu\n", contrast);
 		ld->ops->set_contrast(ld, contrast);
 		rc = count;
 	}
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c
index da9a5ce0ccb..78dafc0c8fc 100644
--- a/drivers/video/backlight/ld9040.c
+++ b/drivers/video/backlight/ld9040.c
@@ -31,6 +31,7 @@
 #include <linux/lcd.h>
 #include <linux/backlight.h>
 #include <linux/module.h>
+#include <linux/regulator/consumer.h>
 
 #include "ld9040_gamma.h"
 
@@ -53,8 +54,51 @@ struct ld9040 {
 	struct lcd_device		*ld;
 	struct backlight_device		*bd;
 	struct lcd_platform_data	*lcd_pd;
+
+	struct mutex			lock;
+	bool  enabled;
+};
+
+static struct regulator_bulk_data supplies[] = {
+	{ .supply = "vdd3", },
+	{ .supply = "vci", },
 };
 
+static void ld9040_regulator_enable(struct ld9040 *lcd)
+{
+	int ret = 0;
+	struct lcd_platform_data *pd = NULL;
+
+	pd = lcd->lcd_pd;
+	mutex_lock(&lcd->lock);
+	if (!lcd->enabled) {
+		ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies);
+		if (ret)
+			goto out;
+
+		lcd->enabled = true;
+	}
+	mdelay(pd->power_on_delay);
+out:
+	mutex_unlock(&lcd->lock);
+}
+
+static void ld9040_regulator_disable(struct ld9040 *lcd)
+{
+	int ret = 0;
+
+	mutex_lock(&lcd->lock);
+	if (lcd->enabled) {
+		ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies);
+		if (ret)
+			goto out;
+
+		lcd->enabled = false;
+	}
+out:
+	mutex_unlock(&lcd->lock);
+}
+
 static const unsigned short seq_swreset[] = {
 	0x01, COMMAND_ONLY,
 	ENDDEF, 0x00
@@ -532,13 +576,8 @@ static int ld9040_power_on(struct ld9040 *lcd)
 		return -EFAULT;
 	}
 
-	if (!pd->power_on) {
-		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
-	} else {
-		pd->power_on(lcd->ld, 1);
-		mdelay(pd->power_on_delay);
-	}
+	/* lcd power on */
+	ld9040_regulator_enable(lcd);
 
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
@@ -582,11 +621,8 @@ static int ld9040_power_off(struct ld9040 *lcd)
 
 	mdelay(pd->power_off_delay);
 
-	if (!pd->power_on) {
-		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
-	} else
-		pd->power_on(lcd->ld, 0);
+	/* lcd power off */
+	ld9040_regulator_disable(lcd);
 
 	return 0;
 }
@@ -693,6 +729,14 @@ static int ld9040_probe(struct spi_device *spi)
 		goto out_free_lcd;
 	}
 
+	mutex_init(&lcd->lock);
+
+	ret = regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies);
+	if (ret) {
+		dev_err(lcd->dev, "Failed to get regulators: %d\n", ret);
+		goto out_free_lcd;
+	}
+
 	ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops);
 	if (IS_ERR(ld)) {
 		ret = PTR_ERR(ld);
@@ -739,6 +783,8 @@ static int ld9040_probe(struct spi_device *spi)
 out_unregister_lcd:
 	lcd_device_unregister(lcd->ld);
 out_free_lcd:
+	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
+
 	kfree(lcd);
 	return ret;
 }
@@ -750,6 +796,7 @@ static int __devexit ld9040_remove(struct spi_device *spi)
 	ld9040_power(lcd, FB_BLANK_POWERDOWN);
 	backlight_device_unregister(lcd->bd);
 	lcd_device_unregister(lcd->ld);
+	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
 	kfree(lcd);
 
 	return 0;
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index 7bbc802560e..c915e3b5388 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -188,17 +188,7 @@ static struct platform_driver max8925_backlight_driver = {
 	.remove		= __devexit_p(max8925_backlight_remove),
 };
 
-static int __init max8925_backlight_init(void)
-{
-	return platform_driver_register(&max8925_backlight_driver);
-}
-module_init(max8925_backlight_init);
-
-static void __exit max8925_backlight_exit(void)
-{
-	platform_driver_unregister(&max8925_backlight_driver);
-};
-module_exit(max8925_backlight_exit);
+module_platform_driver(max8925_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for Maxim MAX8925");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c
index 08d26a72394..d8cde277ec8 100644
--- a/drivers/video/backlight/omap1_bl.c
+++ b/drivers/video/backlight/omap1_bl.c
@@ -195,18 +195,7 @@ static struct platform_driver omapbl_driver = {
 	},
 };
 
-static int __init omapbl_init(void)
-{
-	return platform_driver_register(&omapbl_driver);
-}
-
-static void __exit omapbl_exit(void)
-{
-	platform_driver_unregister(&omapbl_driver);
-}
-
-module_init(omapbl_init);
-module_exit(omapbl_exit);
+module_platform_driver(omapbl_driver);
 
 MODULE_AUTHOR("Andrzej Zaborowski <balrog@zabor.org>");
 MODULE_DESCRIPTION("OMAP LCD Backlight driver");
diff --git a/drivers/video/backlight/pcf50633-backlight.c b/drivers/video/backlight/pcf50633-backlight.c
index ef5628d6056..13e88b71dae 100644
--- a/drivers/video/backlight/pcf50633-backlight.c
+++ b/drivers/video/backlight/pcf50633-backlight.c
@@ -173,17 +173,7 @@ static struct platform_driver pcf50633_bl_driver = {
 	},
 };
 
-static int __init pcf50633_bl_init(void)
-{
-	return platform_driver_register(&pcf50633_bl_driver);
-}
-module_init(pcf50633_bl_init);
-
-static void __exit pcf50633_bl_exit(void)
-{
-	platform_driver_unregister(&pcf50633_bl_driver);
-}
-module_exit(pcf50633_bl_exit);
+module_platform_driver(pcf50633_bl_driver);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("PCF50633 backlight driver");
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c
index 302330acf62..f0bf491ed08 100644
--- a/drivers/video/backlight/platform_lcd.c
+++ b/drivers/video/backlight/platform_lcd.c
@@ -85,7 +85,8 @@ static int __devinit platform_lcd_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	plcd = kzalloc(sizeof(struct platform_lcd), GFP_KERNEL);
+	plcd = devm_kzalloc(&pdev->dev, sizeof(struct platform_lcd),
+			    GFP_KERNEL);
 	if (!plcd) {
 		dev_err(dev, "no memory for state\n");
 		return -ENOMEM;
@@ -98,7 +99,7 @@ static int __devinit platform_lcd_probe(struct platform_device *pdev)
 	if (IS_ERR(plcd->lcd)) {
 		dev_err(dev, "cannot register lcd device\n");
 		err = PTR_ERR(plcd->lcd);
-		goto err_mem;
+		goto err;
 	}
 
 	platform_set_drvdata(pdev, plcd);
@@ -106,8 +107,7 @@ static int __devinit platform_lcd_probe(struct platform_device *pdev)
 
 	return 0;
 
- err_mem:
-	kfree(plcd);
+ err:
 	return err;
 }
 
@@ -116,7 +116,6 @@ static int __devexit platform_lcd_remove(struct platform_device *pdev)
 	struct platform_lcd *plcd = platform_get_drvdata(pdev);
 
 	lcd_device_unregister(plcd->lcd);
-	kfree(plcd);
 
 	return 0;
 }
@@ -157,18 +156,7 @@ static struct platform_driver platform_lcd_driver = {
 	.resume         = platform_lcd_resume,
 };
 
-static int __init platform_lcd_init(void)
-{
-	return platform_driver_register(&platform_lcd_driver);
-}
-
-static void __exit platform_lcd_cleanup(void)
-{
-	platform_driver_unregister(&platform_lcd_driver);
-}
-
-module_init(platform_lcd_init);
-module_exit(platform_lcd_cleanup);
+module_platform_driver(platform_lcd_driver);
 
 MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 8b5b2a4124c..7496d04e1d3 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -169,10 +169,9 @@ static int pwm_backlight_remove(struct platform_device *pdev)
 }
 
 #ifdef CONFIG_PM
-static int pwm_backlight_suspend(struct platform_device *pdev,
-				 pm_message_t state)
+static int pwm_backlight_suspend(struct device *dev)
 {
-	struct backlight_device *bl = platform_get_drvdata(pdev);
+	struct backlight_device *bl = dev_get_drvdata(dev);
 	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
 
 	if (pb->notify)
@@ -184,40 +183,32 @@ static int pwm_backlight_suspend(struct platform_device *pdev,
 	return 0;
 }
 
-static int pwm_backlight_resume(struct platform_device *pdev)
+static int pwm_backlight_resume(struct device *dev)
 {
-	struct backlight_device *bl = platform_get_drvdata(pdev);
+	struct backlight_device *bl = dev_get_drvdata(dev);
 
 	backlight_update_status(bl);
 	return 0;
 }
-#else
-#define pwm_backlight_suspend	NULL
-#define pwm_backlight_resume	NULL
+
+static SIMPLE_DEV_PM_OPS(pwm_backlight_pm_ops, pwm_backlight_suspend,
+			 pwm_backlight_resume);
+
 #endif
 
 static struct platform_driver pwm_backlight_driver = {
 	.driver		= {
 		.name	= "pwm-backlight",
 		.owner	= THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm	= &pwm_backlight_pm_ops,
+#endif
 	},
 	.probe		= pwm_backlight_probe,
 	.remove		= pwm_backlight_remove,
-	.suspend	= pwm_backlight_suspend,
-	.resume		= pwm_backlight_resume,
 };
 
-static int __init pwm_backlight_init(void)
-{
-	return platform_driver_register(&pwm_backlight_driver);
-}
-module_init(pwm_backlight_init);
-
-static void __exit pwm_backlight_exit(void)
-{
-	platform_driver_unregister(&pwm_backlight_driver);
-}
-module_exit(pwm_backlight_exit);
+module_platform_driver(pwm_backlight_driver);
 
 MODULE_DESCRIPTION("PWM based Backlight Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/wm831x_bl.c b/drivers/video/backlight/wm831x_bl.c
index fbe9e9316f3..4e915f5eca9 100644
--- a/drivers/video/backlight/wm831x_bl.c
+++ b/drivers/video/backlight/wm831x_bl.c
@@ -236,17 +236,7 @@ static struct platform_driver wm831x_backlight_driver = {
 	.remove		= wm831x_backlight_remove,
 };
 
-static int __init wm831x_backlight_init(void)
-{
-	return platform_driver_register(&wm831x_backlight_driver);
-}
-module_init(wm831x_backlight_init);
-
-static void __exit wm831x_backlight_exit(void)
-{
-	platform_driver_unregister(&wm831x_backlight_driver);
-}
-module_exit(wm831x_backlight_exit);
+module_platform_driver(wm831x_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for WM831x PMICs");
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com");