gpio/s3c64xx: move gpio driver into drivers/gpio/

Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 294 insertions, 0 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 5654e1b082af..6368730a2e58 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -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
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index c7f1c00986c9..8c1fb23285cb 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -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
index 000000000000..b4f1c8204f03
--- /dev/null
+++ b/drivers/gpio/gpio-s3c64xx.c
@@ -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);