summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-s5pc100/gpiolib.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-s5pc100/gpiolib.c')
-rw-r--r--arch/arm/mach-s5pc100/gpiolib.c426
1 files changed, 426 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pc100/gpiolib.c b/arch/arm/mach-s5pc100/gpiolib.c
new file mode 100644
index 000000000000..0fab7f2cd8bf
--- /dev/null
+++ b/arch/arm/mach-s5pc100/gpiolib.c
@@ -0,0 +1,426 @@
+/*
+ * arch/arm/plat-s5pc100/gpiolib.c
+ *
+ * Copyright 2009 Samsung Electronics Co
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ *
+ * S5PC100 - 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 <mach/regs-gpio.h>
+
+#include <plat/gpio-core.h>
+#include <plat/gpio-cfg.h>
+#include <plat/gpio-cfg-helpers.h>
+
+/* S5PC100 GPIO bank summary:
+ *
+ * Bank GPIOs Style INT Type
+ * A0 8 4Bit GPIO_INT0
+ * A1 5 4Bit GPIO_INT1
+ * B 8 4Bit GPIO_INT2
+ * C 5 4Bit GPIO_INT3
+ * D 7 4Bit GPIO_INT4
+ * E0 8 4Bit GPIO_INT5
+ * E1 6 4Bit GPIO_INT6
+ * F0 8 4Bit GPIO_INT7
+ * F1 8 4Bit GPIO_INT8
+ * F2 8 4Bit GPIO_INT9
+ * F3 4 4Bit GPIO_INT10
+ * G0 8 4Bit GPIO_INT11
+ * G1 3 4Bit GPIO_INT12
+ * G2 7 4Bit GPIO_INT13
+ * G3 7 4Bit GPIO_INT14
+ * H0 8 4Bit WKUP_INT
+ * H1 8 4Bit WKUP_INT
+ * H2 8 4Bit WKUP_INT
+ * H3 8 4Bit WKUP_INT
+ * I 8 4Bit GPIO_INT15
+ * J0 8 4Bit GPIO_INT16
+ * J1 5 4Bit GPIO_INT17
+ * J2 8 4Bit GPIO_INT18
+ * J3 8 4Bit GPIO_INT19
+ * J4 4 4Bit GPIO_INT20
+ * K0 8 4Bit None
+ * K1 6 4Bit None
+ * K2 8 4Bit None
+ * K3 8 4Bit None
+ * L0 8 4Bit None
+ * L1 8 4Bit None
+ * L2 8 4Bit None
+ * L3 8 4Bit None
+ */
+
+static int s5pc100_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset)
+{
+ return S3C_IRQ_GPIO(chip->base + offset);
+}
+
+static int s5pc100_gpiolib_to_eint(struct gpio_chip *chip, unsigned int offset)
+{
+ int base;
+
+ base = chip->base - S5PC100_GPH0(0);
+ if (base == 0)
+ return IRQ_EINT(offset);
+ base = chip->base - S5PC100_GPH1(0);
+ if (base == 0)
+ return IRQ_EINT(8 + offset);
+ base = chip->base - S5PC100_GPH2(0);
+ if (base == 0)
+ return IRQ_EINT(16 + offset);
+ base = chip->base - S5PC100_GPH3(0);
+ if (base == 0)
+ return IRQ_EINT(24 + offset);
+ return -EINVAL;
+}
+
+static struct s3c_gpio_cfg gpio_cfg = {
+ .set_config = s3c_gpio_setcfg_s3c64xx_4bit,
+ .set_pull = s3c_gpio_setpull_updown,
+ .get_pull = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_cfg gpio_cfg_eint = {
+ .cfg_eint = 0xf,
+ .set_config = s3c_gpio_setcfg_s3c64xx_4bit,
+ .set_pull = s3c_gpio_setpull_updown,
+ .get_pull = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_cfg gpio_cfg_noint = {
+ .set_config = s3c_gpio_setcfg_s3c64xx_4bit,
+ .set_pull = s3c_gpio_setpull_updown,
+ .get_pull = s3c_gpio_getpull_updown,
+};
+
+static struct s3c_gpio_chip s5pc100_gpio_chips[] = {
+ {
+ .base = S5PC100_GPA0_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPA0(0),
+ .ngpio = S5PC100_GPIO_A0_NR,
+ .label = "GPA0",
+ },
+ }, {
+ .base = S5PC100_GPA1_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPA1(0),
+ .ngpio = S5PC100_GPIO_A1_NR,
+ .label = "GPA1",
+ },
+ }, {
+ .base = S5PC100_GPB_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPB(0),
+ .ngpio = S5PC100_GPIO_B_NR,
+ .label = "GPB",
+ },
+ }, {
+ .base = S5PC100_GPC_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPC(0),
+ .ngpio = S5PC100_GPIO_C_NR,
+ .label = "GPC",
+ },
+ }, {
+ .base = S5PC100_GPD_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPD(0),
+ .ngpio = S5PC100_GPIO_D_NR,
+ .label = "GPD",
+ },
+ }, {
+ .base = S5PC100_GPE0_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPE0(0),
+ .ngpio = S5PC100_GPIO_E0_NR,
+ .label = "GPE0",
+ },
+ }, {
+ .base = S5PC100_GPE1_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPE1(0),
+ .ngpio = S5PC100_GPIO_E1_NR,
+ .label = "GPE1",
+ },
+ }, {
+ .base = S5PC100_GPF0_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPF0(0),
+ .ngpio = S5PC100_GPIO_F0_NR,
+ .label = "GPF0",
+ },
+ }, {
+ .base = S5PC100_GPF1_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPF1(0),
+ .ngpio = S5PC100_GPIO_F1_NR,
+ .label = "GPF1",
+ },
+ }, {
+ .base = S5PC100_GPF2_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPF2(0),
+ .ngpio = S5PC100_GPIO_F2_NR,
+ .label = "GPF2",
+ },
+ }, {
+ .base = S5PC100_GPF3_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPF3(0),
+ .ngpio = S5PC100_GPIO_F3_NR,
+ .label = "GPF3",
+ },
+ }, {
+ .base = S5PC100_GPG0_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPG0(0),
+ .ngpio = S5PC100_GPIO_G0_NR,
+ .label = "GPG0",
+ },
+ }, {
+ .base = S5PC100_GPG1_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPG1(0),
+ .ngpio = S5PC100_GPIO_G1_NR,
+ .label = "GPG1",
+ },
+ }, {
+ .base = S5PC100_GPG2_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPG2(0),
+ .ngpio = S5PC100_GPIO_G2_NR,
+ .label = "GPG2",
+ },
+ }, {
+ .base = S5PC100_GPG3_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPG3(0),
+ .ngpio = S5PC100_GPIO_G3_NR,
+ .label = "GPG3",
+ },
+ }, {
+ .base = S5PC100_GPH0_BASE,
+ .config = &gpio_cfg_eint,
+ .chip = {
+ .base = S5PC100_GPH0(0),
+ .ngpio = S5PC100_GPIO_H0_NR,
+ .label = "GPH0",
+ },
+ }, {
+ .base = S5PC100_GPH1_BASE,
+ .config = &gpio_cfg_eint,
+ .chip = {
+ .base = S5PC100_GPH1(0),
+ .ngpio = S5PC100_GPIO_H1_NR,
+ .label = "GPH1",
+ },
+ }, {
+ .base = S5PC100_GPH2_BASE,
+ .config = &gpio_cfg_eint,
+ .chip = {
+ .base = S5PC100_GPH2(0),
+ .ngpio = S5PC100_GPIO_H2_NR,
+ .label = "GPH2",
+ },
+ }, {
+ .base = S5PC100_GPH3_BASE,
+ .config = &gpio_cfg_eint,
+ .chip = {
+ .base = S5PC100_GPH3(0),
+ .ngpio = S5PC100_GPIO_H3_NR,
+ .label = "GPH3",
+ },
+ }, {
+ .base = S5PC100_GPI_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPI(0),
+ .ngpio = S5PC100_GPIO_I_NR,
+ .label = "GPI",
+ },
+ }, {
+ .base = S5PC100_GPJ0_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPJ0(0),
+ .ngpio = S5PC100_GPIO_J0_NR,
+ .label = "GPJ0",
+ },
+ }, {
+ .base = S5PC100_GPJ1_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPJ1(0),
+ .ngpio = S5PC100_GPIO_J1_NR,
+ .label = "GPJ1",
+ },
+ }, {
+ .base = S5PC100_GPJ2_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPJ2(0),
+ .ngpio = S5PC100_GPIO_J2_NR,
+ .label = "GPJ2",
+ },
+ }, {
+ .base = S5PC100_GPJ3_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPJ3(0),
+ .ngpio = S5PC100_GPIO_J3_NR,
+ .label = "GPJ3",
+ },
+ }, {
+ .base = S5PC100_GPJ4_BASE,
+ .config = &gpio_cfg,
+ .chip = {
+ .base = S5PC100_GPJ4(0),
+ .ngpio = S5PC100_GPIO_J4_NR,
+ .label = "GPJ4",
+ },
+ }, {
+ .base = S5PC100_GPK0_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPK0(0),
+ .ngpio = S5PC100_GPIO_K0_NR,
+ .label = "GPK0",
+ },
+ }, {
+ .base = S5PC100_GPK1_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPK1(0),
+ .ngpio = S5PC100_GPIO_K1_NR,
+ .label = "GPK1",
+ },
+ }, {
+ .base = S5PC100_GPK2_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPK2(0),
+ .ngpio = S5PC100_GPIO_K2_NR,
+ .label = "GPK2",
+ },
+ }, {
+ .base = S5PC100_GPK3_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPK3(0),
+ .ngpio = S5PC100_GPIO_K3_NR,
+ .label = "GPK3",
+ },
+ }, {
+ .base = S5PC100_GPL0_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPL0(0),
+ .ngpio = S5PC100_GPIO_L0_NR,
+ .label = "GPL0",
+ },
+ }, {
+ .base = S5PC100_GPL1_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPL1(0),
+ .ngpio = S5PC100_GPIO_L1_NR,
+ .label = "GPL1",
+ },
+ }, {
+ .base = S5PC100_GPL2_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPL2(0),
+ .ngpio = S5PC100_GPIO_L2_NR,
+ .label = "GPL2",
+ },
+ }, {
+ .base = S5PC100_GPL3_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPL3(0),
+ .ngpio = S5PC100_GPIO_L3_NR,
+ .label = "GPL3",
+ },
+ }, {
+ .base = S5PC100_GPL4_BASE,
+ .config = &gpio_cfg_noint,
+ .chip = {
+ .base = S5PC100_GPL4(0),
+ .ngpio = S5PC100_GPIO_L4_NR,
+ .label = "GPL4",
+ },
+ },
+};
+
+/* FIXME move from irq-gpio.c */
+extern struct irq_chip s5pc100_gpioint;
+extern void s5pc100_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc);
+
+static __init void s5pc100_gpiolib_link(struct s3c_gpio_chip *chip)
+{
+ /* Interrupt */
+ if (chip->config == &gpio_cfg) {
+ int i, irq;
+
+ chip->chip.to_irq = s5pc100_gpiolib_to_irq;
+
+ for (i = 0; i < chip->chip.ngpio; i++) {
+ irq = S3C_IRQ_GPIO_BASE + chip->chip.base + i;
+ set_irq_chip(irq, &s5pc100_gpioint);
+ set_irq_data(irq, &chip->chip);
+ set_irq_handler(irq, handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID);
+ }
+ } else if (chip->config == &gpio_cfg_eint) {
+ chip->chip.to_irq = s5pc100_gpiolib_to_eint;
+ }
+}
+
+static __init int s5pc100_gpiolib_init(void)
+{
+ struct s3c_gpio_chip *chip;
+ int nr_chips;
+
+ chip = s5pc100_gpio_chips;
+ nr_chips = ARRAY_SIZE(s5pc100_gpio_chips);
+
+ for (; nr_chips > 0; nr_chips--, chip++)
+ s5pc100_gpiolib_link(chip);
+
+ samsung_gpiolib_add_4bit_chips(s5pc100_gpio_chips,
+ ARRAY_SIZE(s5pc100_gpio_chips));
+
+ /* Interrupt */
+ set_irq_chained_handler(IRQ_GPIOINT, s5pc100_irq_gpioint_handler);
+
+ return 0;
+}
+core_initcall(s5pc100_gpiolib_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 10:40:30 +0100