aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpio/gpio-exynos4.c
diff options
context:
space:
mode:
authorcodeworkx <daniel.hillenbrand@codeworkx.de>2012-06-02 13:09:29 +0200
committercodeworkx <daniel.hillenbrand@codeworkx.de>2012-06-02 13:09:29 +0200
commitc6da2cfeb05178a11c6d062a06f8078150ee492f (patch)
treef3b4021d252c52d6463a9b3c1bb7245e399b009c /drivers/gpio/gpio-exynos4.c
parentc6d7c4dbff353eac7919342ae6b3299a378160a6 (diff)
downloadkernel_samsung_smdk4412-c6da2cfeb05178a11c6d062a06f8078150ee492f.zip
kernel_samsung_smdk4412-c6da2cfeb05178a11c6d062a06f8078150ee492f.tar.gz
kernel_samsung_smdk4412-c6da2cfeb05178a11c6d062a06f8078150ee492f.tar.bz2
samsung update 1
Diffstat (limited to 'drivers/gpio/gpio-exynos4.c')
-rw-r--r--drivers/gpio/gpio-exynos4.c467
1 files changed, 378 insertions, 89 deletions
diff --git a/drivers/gpio/gpio-exynos4.c b/drivers/gpio/gpio-exynos4.c
index 9029835..01b827b 100644
--- a/drivers/gpio/gpio-exynos4.c
+++ b/drivers/gpio/gpio-exynos4.c
@@ -1,4 +1,4 @@
-/* linux/arch/arm/mach-exynos4/gpiolib.c
+/* linux/drivers/gpio/gpio-exynos4.c
*
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
@@ -20,6 +20,7 @@
#include <plat/gpio-core.h>
#include <plat/gpio-cfg.h>
#include <plat/gpio-cfg-helpers.h>
+#include <plat/cpu.h>
int s3c_gpio_setpull_exynos4(struct s3c_gpio_chip *chip,
unsigned int off, s3c_gpio_pull_t pull)
@@ -55,7 +56,7 @@ static struct s3c_gpio_cfg gpio_cfg_noint = {
};
/*
- * Following are the gpio banks in v310.
+ * Following are the gpio banks in exynos4.
*
* The 'config' member when left to NULL, is initialized to the default
* structure gpio_cfg in the init function below.
@@ -64,162 +65,176 @@ static struct s3c_gpio_cfg gpio_cfg_noint = {
* Note: The initialization of 'base' member of s3c_gpio_chip structure
* uses the above macro and depends on the banks being listed in order here.
*/
-static struct s3c_gpio_chip exynos4_gpio_part1_4bit[] = {
+static struct s3c_gpio_pm s3c_gpio_pm_nop = { NULL, NULL };
+
+static struct s3c_gpio_chip exynos4_gpio_common_4bit[] = {
{
+ .base = S5P_VA_GPIO1,
+ .eint_offset = 0x0,
+ .group = 0,
.chip = {
.base = EXYNOS4_GPA0(0),
.ngpio = EXYNOS4_GPIO_A0_NR,
.label = "GPA0",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0x20),
+ .eint_offset = 0x4,
+ .group = 1,
.chip = {
.base = EXYNOS4_GPA1(0),
.ngpio = EXYNOS4_GPIO_A1_NR,
.label = "GPA1",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0x40),
+ .eint_offset = 0x8,
+ .group = 2,
.chip = {
.base = EXYNOS4_GPB(0),
.ngpio = EXYNOS4_GPIO_B_NR,
.label = "GPB",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0x60),
+ .eint_offset = 0xC,
+ .group = 3,
.chip = {
.base = EXYNOS4_GPC0(0),
.ngpio = EXYNOS4_GPIO_C0_NR,
.label = "GPC0",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0x80),
+ .eint_offset = 0x10,
+ .group = 4,
.chip = {
.base = EXYNOS4_GPC1(0),
.ngpio = EXYNOS4_GPIO_C1_NR,
.label = "GPC1",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0xA0),
+ .eint_offset = 0x14,
+ .group = 5,
.chip = {
.base = EXYNOS4_GPD0(0),
.ngpio = EXYNOS4_GPIO_D0_NR,
.label = "GPD0",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0xC0),
+ .eint_offset = 0x18,
+ .group = 6,
.chip = {
.base = EXYNOS4_GPD1(0),
.ngpio = EXYNOS4_GPIO_D1_NR,
.label = "GPD1",
},
}, {
- .chip = {
- .base = EXYNOS4_GPE0(0),
- .ngpio = EXYNOS4_GPIO_E0_NR,
- .label = "GPE0",
- },
- }, {
- .chip = {
- .base = EXYNOS4_GPE1(0),
- .ngpio = EXYNOS4_GPIO_E1_NR,
- .label = "GPE1",
- },
- }, {
- .chip = {
- .base = EXYNOS4_GPE2(0),
- .ngpio = EXYNOS4_GPIO_E2_NR,
- .label = "GPE2",
- },
- }, {
- .chip = {
- .base = EXYNOS4_GPE3(0),
- .ngpio = EXYNOS4_GPIO_E3_NR,
- .label = "GPE3",
- },
- }, {
- .chip = {
- .base = EXYNOS4_GPE4(0),
- .ngpio = EXYNOS4_GPIO_E4_NR,
- .label = "GPE4",
- },
- }, {
+ .base = (S5P_VA_GPIO1 + 0x180),
+ .eint_offset = 0x30,
+ .group = 7,
.chip = {
.base = EXYNOS4_GPF0(0),
.ngpio = EXYNOS4_GPIO_F0_NR,
.label = "GPF0",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0x1A0),
+ .eint_offset = 0x34,
+ .group = 8,
.chip = {
.base = EXYNOS4_GPF1(0),
.ngpio = EXYNOS4_GPIO_F1_NR,
.label = "GPF1",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0x1C0),
+ .eint_offset = 0x38,
+ .group = 9,
.chip = {
.base = EXYNOS4_GPF2(0),
.ngpio = EXYNOS4_GPIO_F2_NR,
.label = "GPF2",
},
}, {
+ .base = (S5P_VA_GPIO1 + 0x1E0),
+ .eint_offset = 0x3C,
+ .group = 10,
.chip = {
.base = EXYNOS4_GPF3(0),
.ngpio = EXYNOS4_GPIO_F3_NR,
.label = "GPF3",
},
- },
-};
-
-static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
- {
- .chip = {
- .base = EXYNOS4_GPJ0(0),
- .ngpio = EXYNOS4_GPIO_J0_NR,
- .label = "GPJ0",
- },
- }, {
- .chip = {
- .base = EXYNOS4_GPJ1(0),
- .ngpio = EXYNOS4_GPIO_J1_NR,
- .label = "GPJ1",
- },
}, {
+ .base = (S5P_VA_GPIO2 + 0x40),
+ .eint_offset = 0x8,
+ .group = 16,
.chip = {
.base = EXYNOS4_GPK0(0),
.ngpio = EXYNOS4_GPIO_K0_NR,
.label = "GPK0",
},
+#ifdef CONFIG_MACH_MIDAS
+ .pm = &s3c_gpio_pm_nop,
+#endif
}, {
+ .base = (S5P_VA_GPIO2 + 0x60),
+ .eint_offset = 0xC,
+ .group = 17,
.chip = {
.base = EXYNOS4_GPK1(0),
.ngpio = EXYNOS4_GPIO_K1_NR,
.label = "GPK1",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x80),
+ .eint_offset = 0x10,
+ .group = 18,
.chip = {
.base = EXYNOS4_GPK2(0),
.ngpio = EXYNOS4_GPIO_K2_NR,
.label = "GPK2",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0xA0),
+ .eint_offset = 0x14,
+ .group = 19,
.chip = {
.base = EXYNOS4_GPK3(0),
.ngpio = EXYNOS4_GPIO_K3_NR,
.label = "GPK3",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0xC0),
+ .eint_offset = 0x18,
+ .group = 20,
.chip = {
.base = EXYNOS4_GPL0(0),
.ngpio = EXYNOS4_GPIO_L0_NR,
.label = "GPL0",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0xE0),
+ .eint_offset = 0x1C,
+ .group = 21,
.chip = {
.base = EXYNOS4_GPL1(0),
.ngpio = EXYNOS4_GPIO_L1_NR,
.label = "GPL1",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x100),
+ .eint_offset = 0x20,
+ .group = 22,
.chip = {
.base = EXYNOS4_GPL2(0),
.ngpio = EXYNOS4_GPIO_L2_NR,
.label = "GPL2",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x120),
.config = &gpio_cfg_noint,
.chip = {
.base = EXYNOS4_GPY0(0),
@@ -227,6 +242,7 @@ static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
.label = "GPY0",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x140),
.config = &gpio_cfg_noint,
.chip = {
.base = EXYNOS4_GPY1(0),
@@ -234,6 +250,7 @@ static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
.label = "GPY1",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x160),
.config = &gpio_cfg_noint,
.chip = {
.base = EXYNOS4_GPY2(0),
@@ -241,6 +258,7 @@ static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
.label = "GPY2",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x180),
.config = &gpio_cfg_noint,
.chip = {
.base = EXYNOS4_GPY3(0),
@@ -248,6 +266,7 @@ static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
.label = "GPY3",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x1A0),
.config = &gpio_cfg_noint,
.chip = {
.base = EXYNOS4_GPY4(0),
@@ -255,6 +274,7 @@ static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
.label = "GPY4",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x1C0),
.config = &gpio_cfg_noint,
.chip = {
.base = EXYNOS4_GPY5(0),
@@ -262,6 +282,7 @@ static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
.label = "GPY5",
},
}, {
+ .base = (S5P_VA_GPIO2 + 0x1E0),
.config = &gpio_cfg_noint,
.chip = {
.base = EXYNOS4_GPY6(0),
@@ -308,76 +329,344 @@ static struct s3c_gpio_chip exynos4_gpio_part2_4bit[] = {
.label = "GPX3",
.to_irq = samsung_gpiolib_to_irq,
},
+ }, {
+ .base = S5P_VA_GPIO3,
+ .chip = {
+ .base = EXYNOS4_GPZ(0),
+ .ngpio = EXYNOS4_GPIO_Z_NR,
+ .label = "GPZ",
+ },
},
};
-static struct s3c_gpio_chip exynos4_gpio_part3_4bit[] = {
+static struct s3c_gpio_chip exynos4210_gpio_4bit[] = {
{
+ .base = (S5P_VA_GPIO1 + 0xE0),
+ .eint_offset = 0x1C,
+ .group = 11,
.chip = {
- .base = EXYNOS4_GPZ(0),
- .ngpio = EXYNOS4_GPIO_Z_NR,
- .label = "GPZ",
+ .base = EXYNOS4210_GPE0(0),
+ .ngpio = EXYNOS4210_GPIO_E0_NR,
+ .label = "GPE0",
+ },
+ }, {
+ .base = (S5P_VA_GPIO1 + 0x100),
+ .eint_offset = 0x20,
+ .group = 12,
+ .chip = {
+ .base = EXYNOS4210_GPE1(0),
+ .ngpio = EXYNOS4210_GPIO_E1_NR,
+ .label = "GPE1",
+ },
+ }, {
+ .base = (S5P_VA_GPIO1 + 0x120),
+ .eint_offset = 0x24,
+ .group = 13,
+ .chip = {
+ .base = EXYNOS4210_GPE2(0),
+ .ngpio = EXYNOS4210_GPIO_E2_NR,
+ .label = "GPE2",
+ },
+ }, {
+ .base = (S5P_VA_GPIO1 + 0x140),
+ .eint_offset = 0x28,
+ .group = 14,
+ .chip = {
+ .base = EXYNOS4210_GPE3(0),
+ .ngpio = EXYNOS4210_GPIO_E3_NR,
+ .label = "GPE3",
+ },
+ }, {
+ .base = (S5P_VA_GPIO1 + 0x160),
+ .eint_offset = 0x2C,
+ .group = 15,
+ .chip = {
+ .base = EXYNOS4210_GPE4(0),
+ .ngpio = EXYNOS4210_GPIO_E4_NR,
+ .label = "GPE4",
+ },
+ }, {
+ .base = S5P_VA_GPIO2,
+ .group = 23,
+ .eint_offset = 0x0,
+ .chip = {
+ .base = EXYNOS4210_GPJ0(0),
+ .ngpio = EXYNOS4210_GPIO_J0_NR,
+ .label = "GPJ0",
+ },
+ }, {
+ .base = (S5P_VA_GPIO2 + 0x20),
+ .eint_offset = 0x4,
+ .group = 24,
+ .chip = {
+ .base = EXYNOS4210_GPJ1(0),
+ .ngpio = EXYNOS4210_GPIO_J1_NR,
+ .label = "GPJ1",
},
},
};
+static struct s3c_gpio_chip exynos4212_gpio_4bit[] = {
+ {
+ .base = (S5P_VA_GPIO1 + 0x240),
+ .eint_offset = 0x40,
+ .group = 11,
+ .chip = {
+ .base = EXYNOS4212_GPJ0(0),
+ .ngpio = EXYNOS4212_GPIO_J0_NR,
+ .label = "GPJ0",
+ },
+ }, {
+ .base = (S5P_VA_GPIO1 + 0x260),
+ .eint_offset = 0x44,
+ .group = 12,
+ .chip = {
+ .base = EXYNOS4212_GPJ1(0),
+ .ngpio = EXYNOS4212_GPIO_J1_NR,
+ .label = "GPJ1",
+ }
+ }, {
+ .base = (S5P_VA_GPIO2 + 0x260),
+ .eint_offset = 0x24,
+ .group = 23,
+ .chip = {
+ .base = EXYNOS4212_GPM0(0),
+ .ngpio = EXYNOS4212_GPIO_M0_NR,
+ .label = "GPM0",
+ },
+ }, {
+ .base = (S5P_VA_GPIO2 + 0x280),
+ .eint_offset = 0x28,
+ .group = 24,
+ .chip = {
+ .base = EXYNOS4212_GPM1(0),
+ .ngpio = EXYNOS4212_GPIO_M1_NR,
+ .label = "GPM1",
+ },
+ }, {
+ .base = (S5P_VA_GPIO2 + 0x2A0),
+ .eint_offset = 0x2C,
+ .group = 25,
+ .chip = {
+ .base = EXYNOS4212_GPM2(0),
+ .ngpio = EXYNOS4212_GPIO_M2_NR,
+ .label = "GPM2",
+ },
+ }, {
+ .base = (S5P_VA_GPIO2 + 0x2C0),
+ .eint_offset = 0x30,
+ .group = 26,
+ .chip = {
+ .base = EXYNOS4212_GPM3(0),
+ .ngpio = EXYNOS4212_GPIO_M3_NR,
+ .label = "GPM3",
+ },
+ }, {
+ .base = (S5P_VA_GPIO2 + 0x2E0),
+ .eint_offset = 0x34,
+ .group = 27,
+ .chip = {
+ .base = EXYNOS4212_GPM4(0),
+ .ngpio = EXYNOS4212_GPIO_M4_NR,
+ .label = "GPM4",
+ },
+ }, {
+ .base = S5P_VA_GPIO4,
+ .eint_offset = 0x00,
+ .group = 28,
+ .chip = {
+ .base = EXYNOS4212_GPV0(0),
+ .ngpio = EXYNOS4212_GPIO_V0_NR,
+ .label = "GPV0",
+ },
+ }, {
+ .base = (S5P_VA_GPIO4 + 0x20),
+ .eint_offset = 0x04,
+ .group = 29,
+ .chip = {
+ .base = EXYNOS4212_GPV1(0),
+ .ngpio = EXYNOS4212_GPIO_V1_NR,
+ .label = "GPV1",
+ },
+ }, {
+ .base = (S5P_VA_GPIO4 + 0x60),
+ .eint_offset = 0x08,
+ .group = 30,
+ .chip = {
+ .base = EXYNOS4212_GPV2(0),
+ .ngpio = EXYNOS4212_GPIO_V2_NR,
+ .label = "GPV2",
+ },
+ }, {
+ .base = (S5P_VA_GPIO4 + 0x80),
+ .eint_offset = 0x0C,
+ .group = 31,
+ .chip = {
+ .base = EXYNOS4212_GPV3(0),
+ .ngpio = EXYNOS4212_GPIO_V3_NR,
+ .label = "GPV3",
+ },
+ }, {
+ .base = (S5P_VA_GPIO4 + 0xC0),
+ .eint_offset = 0x10,
+ .group = 32,
+ .chip = {
+ .base = EXYNOS4212_GPV4(0),
+ .ngpio = EXYNOS4212_GPIO_V4_NR,
+ .label = "GPV4",
+ },
+ },
+};
+
+/* EXYNOS4 machine dependent GPIO help function */
+int s3c_gpio_slp_cfgpin(unsigned int pin, unsigned int config)
+{
+ struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
+ void __iomem *reg;
+ unsigned long flags;
+ int offset;
+ u32 con;
+ int shift;
+
+ if (!chip)
+ return -EINVAL;
+
+ if ((pin >= EXYNOS4_GPX0(0)) && (pin <= EXYNOS4_GPX3(7)))
+ return -EINVAL;
+
+ if (config > S3C_GPIO_SLP_PREV)
+ return -EINVAL;
+
+ reg = chip->base + 0x10;
+
+ offset = pin - chip->chip.base;
+ shift = offset * 2;
+
+ local_irq_save(flags);
+
+ con = __raw_readl(reg);
+ con &= ~(3 << shift);
+ con |= config << shift;
+ __raw_writel(con, reg);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+s3c_gpio_pull_t s3c_gpio_get_slp_cfgpin(unsigned int pin)
+{
+ struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
+ void __iomem *reg;
+ unsigned long flags;
+ int offset;
+ u32 con;
+ int shift;
+
+ if (!chip)
+ return -EINVAL;
+
+ if ((pin >= EXYNOS4_GPX0(0)) && (pin <= EXYNOS4_GPX3(7)))
+ return -EINVAL;
+
+ reg = chip->base + 0x10;
+
+ offset = pin - chip->chip.base;
+ shift = offset * 2;
+
+ local_irq_save(flags);
+
+ con = __raw_readl(reg);
+ con >>= shift;
+ con &= 0x3;
+
+ local_irq_restore(flags);
+
+ return (__force s3c_gpio_pull_t)con;
+}
+
+int s3c_gpio_slp_setpull_updown(unsigned int pin, unsigned int config)
+{
+ struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
+ void __iomem *reg;
+ unsigned long flags;
+ int offset;
+ u32 con;
+ int shift;
+
+ if (!chip)
+ return -EINVAL;
+
+ if ((pin >= EXYNOS4_GPX0(0)) && (pin <= EXYNOS4_GPX3(7)))
+ return -EINVAL;
+
+ if (config > S3C_GPIO_PULL_UP)
+ return -EINVAL;
+
+ reg = chip->base + 0x14;
+
+ offset = pin - chip->chip.base;
+ shift = offset * 2;
+
+ local_irq_save(flags);
+
+ con = __raw_readl(reg);
+ con &= ~(3 << shift);
+ con |= config << shift;
+ __raw_writel(con, reg);
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
static __init int exynos4_gpiolib_init(void)
{
struct s3c_gpio_chip *chip;
int i;
- int group = 0;
int nr_chips;
- /* GPIO part 1 */
+ /* GPIO common part */
- chip = exynos4_gpio_part1_4bit;
- nr_chips = ARRAY_SIZE(exynos4_gpio_part1_4bit);
+ chip = exynos4_gpio_common_4bit;
+ nr_chips = ARRAY_SIZE(exynos4_gpio_common_4bit);
for (i = 0; i < nr_chips; i++, chip++) {
- if (chip->config == NULL) {
+ if (chip->config == NULL)
chip->config = &gpio_cfg;
- /* Assign the GPIO interrupt group */
- chip->group = group++;
- }
if (chip->base == NULL)
- chip->base = S5P_VA_GPIO1 + (i) * 0x20;
+ pr_err("No allocation of base address for [common gpio]");
}
- samsung_gpiolib_add_4bit_chips(exynos4_gpio_part1_4bit, nr_chips);
+ samsung_gpiolib_add_4bit_chips(exynos4_gpio_common_4bit, nr_chips);
- /* GPIO part 2 */
+ /* Only 4210 GPIO part */
+ if (soc_is_exynos4210()) {
+ chip = exynos4210_gpio_4bit;
+ nr_chips = ARRAY_SIZE(exynos4210_gpio_4bit);
- chip = exynos4_gpio_part2_4bit;
- nr_chips = ARRAY_SIZE(exynos4_gpio_part2_4bit);
-
- for (i = 0; i < nr_chips; i++, chip++) {
- if (chip->config == NULL) {
- chip->config = &gpio_cfg;
- /* Assign the GPIO interrupt group */
- chip->group = group++;
+ for (i = 0; i < nr_chips; i++, chip++) {
+ if (chip->config == NULL)
+ chip->config = &gpio_cfg;
+ if (chip->base == NULL)
+ pr_err("No allocation of base address [4210 gpio]");
}
- if (chip->base == NULL)
- chip->base = S5P_VA_GPIO2 + (i) * 0x20;
- }
-
- samsung_gpiolib_add_4bit_chips(exynos4_gpio_part2_4bit, nr_chips);
-
- /* GPIO part 3 */
- chip = exynos4_gpio_part3_4bit;
- nr_chips = ARRAY_SIZE(exynos4_gpio_part3_4bit);
+ samsung_gpiolib_add_4bit_chips(exynos4210_gpio_4bit, nr_chips);
+ } else {
+ /* Only 4212/4412 GPIO part */
+ chip = exynos4212_gpio_4bit;
+ nr_chips = ARRAY_SIZE(exynos4212_gpio_4bit);
- for (i = 0; i < nr_chips; i++, chip++) {
- if (chip->config == NULL) {
- chip->config = &gpio_cfg;
- /* Assign the GPIO interrupt group */
- chip->group = group++;
+ for (i = 0; i < nr_chips; i++, chip++) {
+ if (chip->config == NULL)
+ chip->config = &gpio_cfg;
+ if (chip->base == NULL)
+ pr_err("No allocation of base address [4212 gpio]");
}
- if (chip->base == NULL)
- chip->base = S5P_VA_GPIO3 + (i) * 0x20;
+
+ samsung_gpiolib_add_4bit_chips(exynos4212_gpio_4bit, nr_chips);
}
- samsung_gpiolib_add_4bit_chips(exynos4_gpio_part3_4bit, nr_chips);
s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);