gpio/s3c64xx: move gpio driver into drivers/gpio/
authorKukjin Kim <kgene.kim@samsung.com>
Fri, 26 Aug 2011 02:06:25 +0000 (11:06 +0900)
committerKukjin Kim <kgene.kim@samsung.com>
Wed, 21 Sep 2011 01:52:32 +0000 (10:52 +0900)
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
arch/arm/mach-s3c64xx/Makefile
arch/arm/mach-s3c64xx/gpiolib.c [deleted file]
drivers/gpio/Kconfig
drivers/gpio/Makefile
drivers/gpio/gpio-s3c64xx.c [new file with mode: 0644]

index 61b4034a0c224d24ea95a135487be42ecae112dc..f0102d7b531bd2aa3085a5b9dc0295b8e2096880 100644 (file)
@@ -13,7 +13,6 @@ obj-                          :=
 # Core files
 obj-y                          += cpu.o
 obj-y                          += clock.o
-obj-y                          += gpiolib.o
 
 # Core support for S3C6400 system
 
diff --git a/arch/arm/mach-s3c64xx/gpiolib.c b/arch/arm/mach-s3c64xx/gpiolib.c
deleted file mode 100644 (file)
index 92b0908..0000000
+++ /dev/null
@@ -1,290 +0,0 @@
-/* arch/arm/plat-s3c64xx/gpiolib.c
- *
- * Copyright 2008 Openmoko, Inc.
- * Copyright 2008 Simtec Electronics
- *      Ben Dooks <ben@simtec.co.uk>
- *      http://armlinux.simtec.co.uk/
- *
- * S3C64XX - GPIOlib support 
- *
- * 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.
- */
-
-#include <linux/kernel.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/gpio.h>
-
-#include <mach/map.h>
-
-#include <plat/gpio-core.h>
-#include <plat/gpio-cfg.h>
-#include <plat/gpio-cfg-helpers.h>
-#include <mach/regs-gpio.h>
-
-/* GPIO bank summary:
- *
- * Bank        GPIOs   Style   SlpCon  ExtInt Group
- * A   8       4Bit    Yes     1
- * B   7       4Bit    Yes     1
- * C   8       4Bit    Yes     2
- * D   5       4Bit    Yes     3
- * E   5       4Bit    Yes     None
- * F   16      2Bit    Yes     4 [1]
- * G   7       4Bit    Yes     5
- * H   10      4Bit[2] Yes     6
- * I   16      2Bit    Yes     None
- * J   12      2Bit    Yes     None
- * K   16      4Bit[2] No      None
- * L   15      4Bit[2] No      None
- * M   6       4Bit    No      IRQ_EINT
- * N   16      2Bit    No      IRQ_EINT
- * O   16      2Bit    Yes     7
- * P   15      2Bit    Yes     8
- * Q   9       2Bit    Yes     9
- *
- * [1] BANKF pins 14,15 do not form part of the external interrupt sources
- * [2] BANK has two control registers, GPxCON0 and GPxCON1
- */
-
-static struct s3c_gpio_cfg gpio_4bit_cfg_noint = {
-       .set_config     = s3c_gpio_setcfg_s3c64xx_4bit,
-       .get_config     = s3c_gpio_getcfg_s3c64xx_4bit,
-       .set_pull       = s3c_gpio_setpull_updown,
-       .get_pull       = s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_4bit_cfg_eint0111 = {
-       .cfg_eint       = 7,
-       .set_config     = s3c_gpio_setcfg_s3c64xx_4bit,
-       .get_config     = s3c_gpio_getcfg_s3c64xx_4bit,
-       .set_pull       = s3c_gpio_setpull_updown,
-       .get_pull       = s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_4bit_cfg_eint0011 = {
-       .cfg_eint       = 3,
-       .get_config     = s3c_gpio_getcfg_s3c64xx_4bit,
-       .set_config     = s3c_gpio_setcfg_s3c64xx_4bit,
-       .set_pull       = s3c_gpio_setpull_updown,
-       .get_pull       = s3c_gpio_getpull_updown,
-};
-
-static int s3c64xx_gpio2int_gpm(struct gpio_chip *chip, unsigned pin)
-{
-       return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
-}
-
-static struct s3c_gpio_chip gpio_4bit[] = {
-       {
-               .base   = S3C64XX_GPA_BASE,
-               .config = &gpio_4bit_cfg_eint0111,
-               .chip   = {
-                       .base   = S3C64XX_GPA(0),
-                       .ngpio  = S3C64XX_GPIO_A_NR,
-                       .label  = "GPA",
-               },
-       }, {
-               .base   = S3C64XX_GPB_BASE,
-               .config = &gpio_4bit_cfg_eint0111,
-               .chip   = {
-                       .base   = S3C64XX_GPB(0),
-                       .ngpio  = S3C64XX_GPIO_B_NR,
-                       .label  = "GPB",
-               },
-       }, {
-               .base   = S3C64XX_GPC_BASE,
-               .config = &gpio_4bit_cfg_eint0111,
-               .chip   = {
-                       .base   = S3C64XX_GPC(0),
-                       .ngpio  = S3C64XX_GPIO_C_NR,
-                       .label  = "GPC",
-               },
-       }, {
-               .base   = S3C64XX_GPD_BASE,
-               .config = &gpio_4bit_cfg_eint0111,
-               .chip   = {
-                       .base   = S3C64XX_GPD(0),
-                       .ngpio  = S3C64XX_GPIO_D_NR,
-                       .label  = "GPD",
-               },
-       }, {
-               .base   = S3C64XX_GPE_BASE,
-               .config = &gpio_4bit_cfg_noint,
-               .chip   = {
-                       .base   = S3C64XX_GPE(0),
-                       .ngpio  = S3C64XX_GPIO_E_NR,
-                       .label  = "GPE",
-               },
-       }, {
-               .base   = S3C64XX_GPG_BASE,
-               .config = &gpio_4bit_cfg_eint0111,
-               .chip   = {
-                       .base   = S3C64XX_GPG(0),
-                       .ngpio  = S3C64XX_GPIO_G_NR,
-                       .label  = "GPG",
-               },
-       }, {
-               .base   = S3C64XX_GPM_BASE,
-               .config = &gpio_4bit_cfg_eint0011,
-               .chip   = {
-                       .base   = S3C64XX_GPM(0),
-                       .ngpio  = S3C64XX_GPIO_M_NR,
-                       .label  = "GPM",
-                       .to_irq = s3c64xx_gpio2int_gpm,
-               },
-       },
-};
-
-static int s3c64xx_gpio2int_gpl(struct gpio_chip *chip, unsigned pin)
-{
-       return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
-}
-
-static struct s3c_gpio_chip gpio_4bit2[] = {
-       {
-               .base   = S3C64XX_GPH_BASE + 0x4,
-               .config = &gpio_4bit_cfg_eint0111,
-               .chip   = {
-                       .base   = S3C64XX_GPH(0),
-                       .ngpio  = S3C64XX_GPIO_H_NR,
-                       .label  = "GPH",
-               },
-       }, {
-               .base   = S3C64XX_GPK_BASE + 0x4,
-               .config = &gpio_4bit_cfg_noint,
-               .chip   = {
-                       .base   = S3C64XX_GPK(0),
-                       .ngpio  = S3C64XX_GPIO_K_NR,
-                       .label  = "GPK",
-               },
-       }, {
-               .base   = S3C64XX_GPL_BASE + 0x4,
-               .config = &gpio_4bit_cfg_eint0011,
-               .chip   = {
-                       .base   = S3C64XX_GPL(0),
-                       .ngpio  = S3C64XX_GPIO_L_NR,
-                       .label  = "GPL",
-                       .to_irq = s3c64xx_gpio2int_gpl,
-               },
-       },
-};
-
-static struct s3c_gpio_cfg gpio_2bit_cfg_noint = {
-       .set_config     = s3c_gpio_setcfg_s3c24xx,
-       .get_config     = s3c_gpio_getcfg_s3c24xx,
-       .set_pull       = s3c_gpio_setpull_updown,
-       .get_pull       = s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_2bit_cfg_eint10 = {
-       .cfg_eint       = 2,
-       .set_config     = s3c_gpio_setcfg_s3c24xx,
-       .get_config     = s3c_gpio_getcfg_s3c24xx,
-       .set_pull       = s3c_gpio_setpull_updown,
-       .get_pull       = s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_cfg gpio_2bit_cfg_eint11 = {
-       .cfg_eint       = 3,
-       .set_config     = s3c_gpio_setcfg_s3c24xx,
-       .get_config     = s3c_gpio_getcfg_s3c24xx,
-       .set_pull       = s3c_gpio_setpull_updown,
-       .get_pull       = s3c_gpio_getpull_updown,
-};
-
-static struct s3c_gpio_chip gpio_2bit[] = {
-       {
-               .base   = S3C64XX_GPF_BASE,
-               .config = &gpio_2bit_cfg_eint11,
-               .chip   = {
-                       .base   = S3C64XX_GPF(0),
-                       .ngpio  = S3C64XX_GPIO_F_NR,
-                       .label  = "GPF",
-               },
-       }, {
-               .base   = S3C64XX_GPI_BASE,
-               .config = &gpio_2bit_cfg_noint,
-               .chip   = {
-                       .base   = S3C64XX_GPI(0),
-                       .ngpio  = S3C64XX_GPIO_I_NR,
-                       .label  = "GPI",
-               },
-       }, {
-               .base   = S3C64XX_GPJ_BASE,
-               .config = &gpio_2bit_cfg_noint,
-               .chip   = {
-                       .base   = S3C64XX_GPJ(0),
-                       .ngpio  = S3C64XX_GPIO_J_NR,
-                       .label  = "GPJ",
-               },
-       }, {
-               .base   = S3C64XX_GPN_BASE,
-               .irq_base = IRQ_EINT(0),
-               .config = &gpio_2bit_cfg_eint10,
-               .chip   = {
-                       .base   = S3C64XX_GPN(0),
-                       .ngpio  = S3C64XX_GPIO_N_NR,
-                       .label  = "GPN",
-                       .to_irq = samsung_gpiolib_to_irq,
-               },
-       }, {
-               .base   = S3C64XX_GPO_BASE,
-               .config = &gpio_2bit_cfg_eint11,
-               .chip   = {
-                       .base   = S3C64XX_GPO(0),
-                       .ngpio  = S3C64XX_GPIO_O_NR,
-                       .label  = "GPO",
-               },
-       }, {
-               .base   = S3C64XX_GPP_BASE,
-               .config = &gpio_2bit_cfg_eint11,
-               .chip   = {
-                       .base   = S3C64XX_GPP(0),
-                       .ngpio  = S3C64XX_GPIO_P_NR,
-                       .label  = "GPP",
-               },
-       }, {
-               .base   = S3C64XX_GPQ_BASE,
-               .config = &gpio_2bit_cfg_eint11,
-               .chip   = {
-                       .base   = S3C64XX_GPQ(0),
-                       .ngpio  = S3C64XX_GPIO_Q_NR,
-                       .label  = "GPQ",
-               },
-       },
-};
-
-static __init void s3c64xx_gpiolib_add_2bit(struct s3c_gpio_chip *chip)
-{
-       chip->pm = __gpio_pm(&s3c_gpio_pm_2bit);
-}
-
-static __init void s3c64xx_gpiolib_add(struct s3c_gpio_chip *chips,
-                                      int nr_chips,
-                                      void (*fn)(struct s3c_gpio_chip *))
-{
-       for (; nr_chips > 0; nr_chips--, chips++) {
-               if (fn)
-                       (fn)(chips);
-               s3c_gpiolib_add(chips);
-       }
-}
-
-static __init int s3c64xx_gpiolib_init(void)
-{
-       s3c64xx_gpiolib_add(gpio_4bit, ARRAY_SIZE(gpio_4bit),
-                           samsung_gpiolib_add_4bit);
-
-       s3c64xx_gpiolib_add(gpio_4bit2, ARRAY_SIZE(gpio_4bit2),
-                           samsung_gpiolib_add_4bit2);
-
-       s3c64xx_gpiolib_add(gpio_2bit, ARRAY_SIZE(gpio_2bit),
-                           s3c64xx_gpiolib_add_2bit);
-
-       return 0;
-}
-
-core_initcall(s3c64xx_gpiolib_init);
index 5654e1b082af0e42bd932534ed1077a215a5a5e0..6368730a2e58833f9f1d302525e8a0b333186bf9 100644 (file)
@@ -139,6 +139,10 @@ config GPIO_S3C24XX
        def_bool y
        depends on PLAT_S3C24XX
 
+config GPIO_S3C64XX
+       def_bool y
+       depends on ARCH_S3C64XX
+
 config GPIO_S5PC100
        def_bool y
        depends on CPU_S5PC100
index c7f1c00986c9f9feb845cd8ce27c26d04955b514..8c1fb23285cb6d070e55c1c9597f44d20a2407b3 100644 (file)
@@ -41,6 +41,7 @@ obj-$(CONFIG_GPIO_RDC321X)    += gpio-rdc321x.o
 
 obj-$(CONFIG_GPIO_PLAT_SAMSUNG)        += gpio-plat-samsung.o
 obj-$(CONFIG_GPIO_S3C24XX)     += gpio-s3c24xx.o
+obj-$(CONFIG_GPIO_S3C64XX)     += gpio-s3c64xx.o
 obj-$(CONFIG_GPIO_S5PC100)     += gpio-s5pc100.o
 obj-$(CONFIG_GPIO_S5PV210)     += gpio-s5pv210.o
 
diff --git a/drivers/gpio/gpio-s3c64xx.c b/drivers/gpio/gpio-s3c64xx.c
new file mode 100644 (file)
index 0000000..b4f1c82
--- /dev/null
@@ -0,0 +1,289 @@
+/*
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * S3C64XX - GPIOlib support 
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
+#include <mach/map.h>
+
+#include <plat/gpio-core.h>
+#include <plat/gpio-cfg.h>
+#include <plat/gpio-cfg-helpers.h>
+#include <mach/regs-gpio.h>
+
+/* GPIO bank summary:
+ *
+ * Bank        GPIOs   Style   SlpCon  ExtInt Group
+ * A   8       4Bit    Yes     1
+ * B   7       4Bit    Yes     1
+ * C   8       4Bit    Yes     2
+ * D   5       4Bit    Yes     3
+ * E   5       4Bit    Yes     None
+ * F   16      2Bit    Yes     4 [1]
+ * G   7       4Bit    Yes     5
+ * H   10      4Bit[2] Yes     6
+ * I   16      2Bit    Yes     None
+ * J   12      2Bit    Yes     None
+ * K   16      4Bit[2] No      None
+ * L   15      4Bit[2] No      None
+ * M   6       4Bit    No      IRQ_EINT
+ * N   16      2Bit    No      IRQ_EINT
+ * O   16      2Bit    Yes     7
+ * P   15      2Bit    Yes     8
+ * Q   9       2Bit    Yes     9
+ *
+ * [1] BANKF pins 14,15 do not form part of the external interrupt sources
+ * [2] BANK has two control registers, GPxCON0 and GPxCON1
+ */
+
+static struct s3c_gpio_cfg gpio_4bit_cfg_noint = {
+       .set_config     = s3c_gpio_setcfg_s3c64xx_4bit,
+       .get_config     = s3c_gpio_getcfg_s3c64xx_4bit,
+       .set_pull       = s3c_gpio_setpull_updown,
+       .get_pull       = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_cfg gpio_4bit_cfg_eint0111 = {
+       .cfg_eint       = 7,
+       .set_config     = s3c_gpio_setcfg_s3c64xx_4bit,
+       .get_config     = s3c_gpio_getcfg_s3c64xx_4bit,
+       .set_pull       = s3c_gpio_setpull_updown,
+       .get_pull       = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_cfg gpio_4bit_cfg_eint0011 = {
+       .cfg_eint       = 3,
+       .get_config     = s3c_gpio_getcfg_s3c64xx_4bit,
+       .set_config     = s3c_gpio_setcfg_s3c64xx_4bit,
+       .set_pull       = s3c_gpio_setpull_updown,
+       .get_pull       = s3c_gpio_getpull_updown,
+};
+
+static int s3c64xx_gpio2int_gpm(struct gpio_chip *chip, unsigned pin)
+{
+       return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
+}
+
+static struct s3c_gpio_chip gpio_4bit[] = {
+       {
+               .base   = S3C64XX_GPA_BASE,
+               .config = &gpio_4bit_cfg_eint0111,
+               .chip   = {
+                       .base   = S3C64XX_GPA(0),
+                       .ngpio  = S3C64XX_GPIO_A_NR,
+                       .label  = "GPA",
+               },
+       }, {
+               .base   = S3C64XX_GPB_BASE,
+               .config = &gpio_4bit_cfg_eint0111,
+               .chip   = {
+                       .base   = S3C64XX_GPB(0),
+                       .ngpio  = S3C64XX_GPIO_B_NR,
+                       .label  = "GPB",
+               },
+       }, {
+               .base   = S3C64XX_GPC_BASE,
+               .config = &gpio_4bit_cfg_eint0111,
+               .chip   = {
+                       .base   = S3C64XX_GPC(0),
+                       .ngpio  = S3C64XX_GPIO_C_NR,
+                       .label  = "GPC",
+               },
+       }, {
+               .base   = S3C64XX_GPD_BASE,
+               .config = &gpio_4bit_cfg_eint0111,
+               .chip   = {
+                       .base   = S3C64XX_GPD(0),
+                       .ngpio  = S3C64XX_GPIO_D_NR,
+                       .label  = "GPD",
+               },
+       }, {
+               .base   = S3C64XX_GPE_BASE,
+               .config = &gpio_4bit_cfg_noint,
+               .chip   = {
+                       .base   = S3C64XX_GPE(0),
+                       .ngpio  = S3C64XX_GPIO_E_NR,
+                       .label  = "GPE",
+               },
+       }, {
+               .base   = S3C64XX_GPG_BASE,
+               .config = &gpio_4bit_cfg_eint0111,
+               .chip   = {
+                       .base   = S3C64XX_GPG(0),
+                       .ngpio  = S3C64XX_GPIO_G_NR,
+                       .label  = "GPG",
+               },
+       }, {
+               .base   = S3C64XX_GPM_BASE,
+               .config = &gpio_4bit_cfg_eint0011,
+               .chip   = {
+                       .base   = S3C64XX_GPM(0),
+                       .ngpio  = S3C64XX_GPIO_M_NR,
+                       .label  = "GPM",
+                       .to_irq = s3c64xx_gpio2int_gpm,
+               },
+       },
+};
+
+static int s3c64xx_gpio2int_gpl(struct gpio_chip *chip, unsigned pin)
+{
+       return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
+}
+
+static struct s3c_gpio_chip gpio_4bit2[] = {
+       {
+               .base   = S3C64XX_GPH_BASE + 0x4,
+               .config = &gpio_4bit_cfg_eint0111,
+               .chip   = {
+                       .base   = S3C64XX_GPH(0),
+                       .ngpio  = S3C64XX_GPIO_H_NR,
+                       .label  = "GPH",
+               },
+       }, {
+               .base   = S3C64XX_GPK_BASE + 0x4,
+               .config = &gpio_4bit_cfg_noint,
+               .chip   = {
+                       .base   = S3C64XX_GPK(0),
+                       .ngpio  = S3C64XX_GPIO_K_NR,
+                       .label  = "GPK",
+               },
+       }, {
+               .base   = S3C64XX_GPL_BASE + 0x4,
+               .config = &gpio_4bit_cfg_eint0011,
+               .chip   = {
+                       .base   = S3C64XX_GPL(0),
+                       .ngpio  = S3C64XX_GPIO_L_NR,
+                       .label  = "GPL",
+                       .to_irq = s3c64xx_gpio2int_gpl,
+               },
+       },
+};
+
+static struct s3c_gpio_cfg gpio_2bit_cfg_noint = {
+       .set_config     = s3c_gpio_setcfg_s3c24xx,
+       .get_config     = s3c_gpio_getcfg_s3c24xx,
+       .set_pull       = s3c_gpio_setpull_updown,
+       .get_pull       = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_cfg gpio_2bit_cfg_eint10 = {
+       .cfg_eint       = 2,
+       .set_config     = s3c_gpio_setcfg_s3c24xx,
+       .get_config     = s3c_gpio_getcfg_s3c24xx,
+       .set_pull       = s3c_gpio_setpull_updown,
+       .get_pull       = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_cfg gpio_2bit_cfg_eint11 = {
+       .cfg_eint       = 3,
+       .set_config     = s3c_gpio_setcfg_s3c24xx,
+       .get_config     = s3c_gpio_getcfg_s3c24xx,
+       .set_pull       = s3c_gpio_setpull_updown,
+       .get_pull       = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_chip gpio_2bit[] = {
+       {
+               .base   = S3C64XX_GPF_BASE,
+               .config = &gpio_2bit_cfg_eint11,
+               .chip   = {
+                       .base   = S3C64XX_GPF(0),
+                       .ngpio  = S3C64XX_GPIO_F_NR,
+                       .label  = "GPF",
+               },
+       }, {
+               .base   = S3C64XX_GPI_BASE,
+               .config = &gpio_2bit_cfg_noint,
+               .chip   = {
+                       .base   = S3C64XX_GPI(0),
+                       .ngpio  = S3C64XX_GPIO_I_NR,
+                       .label  = "GPI",
+               },
+       }, {
+               .base   = S3C64XX_GPJ_BASE,
+               .config = &gpio_2bit_cfg_noint,
+               .chip   = {
+                       .base   = S3C64XX_GPJ(0),
+                       .ngpio  = S3C64XX_GPIO_J_NR,
+                       .label  = "GPJ",
+               },
+       }, {
+               .base   = S3C64XX_GPN_BASE,
+               .irq_base = IRQ_EINT(0),
+               .config = &gpio_2bit_cfg_eint10,
+               .chip   = {
+                       .base   = S3C64XX_GPN(0),
+                       .ngpio  = S3C64XX_GPIO_N_NR,
+                       .label  = "GPN",
+                       .to_irq = samsung_gpiolib_to_irq,
+               },
+       }, {
+               .base   = S3C64XX_GPO_BASE,
+               .config = &gpio_2bit_cfg_eint11,
+               .chip   = {
+                       .base   = S3C64XX_GPO(0),
+                       .ngpio  = S3C64XX_GPIO_O_NR,
+                       .label  = "GPO",
+               },
+       }, {
+               .base   = S3C64XX_GPP_BASE,
+               .config = &gpio_2bit_cfg_eint11,
+               .chip   = {
+                       .base   = S3C64XX_GPP(0),
+                       .ngpio  = S3C64XX_GPIO_P_NR,
+                       .label  = "GPP",
+               },
+       }, {
+               .base   = S3C64XX_GPQ_BASE,
+               .config = &gpio_2bit_cfg_eint11,
+               .chip   = {
+                       .base   = S3C64XX_GPQ(0),
+                       .ngpio  = S3C64XX_GPIO_Q_NR,
+                       .label  = "GPQ",
+               },
+       },
+};
+
+static __init void s3c64xx_gpiolib_add_2bit(struct s3c_gpio_chip *chip)
+{
+       chip->pm = __gpio_pm(&s3c_gpio_pm_2bit);
+}
+
+static __init void s3c64xx_gpiolib_add(struct s3c_gpio_chip *chips,
+                                      int nr_chips,
+                                      void (*fn)(struct s3c_gpio_chip *))
+{
+       for (; nr_chips > 0; nr_chips--, chips++) {
+               if (fn)
+                       (fn)(chips);
+               s3c_gpiolib_add(chips);
+       }
+}
+
+static __init int s3c64xx_gpiolib_init(void)
+{
+       s3c64xx_gpiolib_add(gpio_4bit, ARRAY_SIZE(gpio_4bit),
+                           samsung_gpiolib_add_4bit);
+
+       s3c64xx_gpiolib_add(gpio_4bit2, ARRAY_SIZE(gpio_4bit2),
+                           samsung_gpiolib_add_4bit2);
+
+       s3c64xx_gpiolib_add(gpio_2bit, ARRAY_SIZE(gpio_2bit),
+                           s3c64xx_gpiolib_add_2bit);
+
+       return 0;
+}
+
+core_initcall(s3c64xx_gpiolib_init);