--- /dev/null
-#define GPIO_REG(x) (*((volatile u32 *)(GPIO_REGS_VIRT + (x))))
+ #ifndef __ASM_MACH_GPIO_PXA_H
+ #define __ASM_MACH_GPIO_PXA_H
+
+ #include <mach/addr-map.h>
+ #include <mach/irqs.h>
+
+ #define GPIO_REGS_VIRT (APB_VIRT_BASE + 0x19000)
+
+ #define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
++#define GPIO_REG(x) (GPIO_REGS_VIRT + (x))
+
+ #define NR_BUILTIN_GPIO IRQ_GPIO_NUM
+
+ #define gpio_to_bank(gpio) ((gpio) >> 5)
+
+ /* NOTE: these macros are defined here to make optimization of
+ * gpio_{get,set}_value() to work when 'gpio' is a constant.
+ * Usage of these macros otherwise is no longer recommended,
+ * use generic GPIO API whenever possible.
+ */
+ #define GPIO_bit(gpio) (1 << ((gpio) & 0x1f))
+
+ #define GPLR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x00)
+ #define GPDR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x0c)
+ #define GPSR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x18)
+ #define GPCR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x24)
+
+ #include <plat/gpio-pxa.h>
+
+ #endif /* __ASM_MACH_GPIO_PXA_H */
--- /dev/null
-#define GPIO_REG(x) (*(volatile u32 *)(GPIO_REGS_VIRT + (x)))
+ /*
+ * Written by Philipp Zabel <philipp.zabel@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+ #ifndef __MACH_PXA_GPIO_PXA_H
+ #define __MACH_PXA_GPIO_PXA_H
+
+ #include <mach/irqs.h>
+ #include <mach/hardware.h>
+
+ #define GPIO_REGS_VIRT io_p2v(0x40E00000)
+
+ #define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
++#define GPIO_REG(x) (GPIO_REGS_VIRT + (x))
+
+ /* GPIO Pin Level Registers */
+ #define GPLR0 GPIO_REG(BANK_OFF(0) + 0x00)
+ #define GPLR1 GPIO_REG(BANK_OFF(1) + 0x00)
+ #define GPLR2 GPIO_REG(BANK_OFF(2) + 0x00)
+ #define GPLR3 GPIO_REG(BANK_OFF(3) + 0x00)
+
+ /* GPIO Pin Direction Registers */
+ #define GPDR0 GPIO_REG(BANK_OFF(0) + 0x0c)
+ #define GPDR1 GPIO_REG(BANK_OFF(1) + 0x0c)
+ #define GPDR2 GPIO_REG(BANK_OFF(2) + 0x0c)
+ #define GPDR3 GPIO_REG(BANK_OFF(3) + 0x0c)
+
+ /* GPIO Pin Output Set Registers */
+ #define GPSR0 GPIO_REG(BANK_OFF(0) + 0x18)
+ #define GPSR1 GPIO_REG(BANK_OFF(1) + 0x18)
+ #define GPSR2 GPIO_REG(BANK_OFF(2) + 0x18)
+ #define GPSR3 GPIO_REG(BANK_OFF(3) + 0x18)
+
+ /* GPIO Pin Output Clear Registers */
+ #define GPCR0 GPIO_REG(BANK_OFF(0) + 0x24)
+ #define GPCR1 GPIO_REG(BANK_OFF(1) + 0x24)
+ #define GPCR2 GPIO_REG(BANK_OFF(2) + 0x24)
+ #define GPCR3 GPIO_REG(BANK_OFF(3) + 0x24)
+
+ /* GPIO Rising Edge Detect Registers */
+ #define GRER0 GPIO_REG(BANK_OFF(0) + 0x30)
+ #define GRER1 GPIO_REG(BANK_OFF(1) + 0x30)
+ #define GRER2 GPIO_REG(BANK_OFF(2) + 0x30)
+ #define GRER3 GPIO_REG(BANK_OFF(3) + 0x30)
+
+ /* GPIO Falling Edge Detect Registers */
+ #define GFER0 GPIO_REG(BANK_OFF(0) + 0x3c)
+ #define GFER1 GPIO_REG(BANK_OFF(1) + 0x3c)
+ #define GFER2 GPIO_REG(BANK_OFF(2) + 0x3c)
+ #define GFER3 GPIO_REG(BANK_OFF(3) + 0x3c)
+
+ /* GPIO Edge Detect Status Registers */
+ #define GEDR0 GPIO_REG(BANK_OFF(0) + 0x48)
+ #define GEDR1 GPIO_REG(BANK_OFF(1) + 0x48)
+ #define GEDR2 GPIO_REG(BANK_OFF(2) + 0x48)
+ #define GEDR3 GPIO_REG(BANK_OFF(3) + 0x48)
+
+ /* GPIO Alternate Function Select Registers */
+ #define GAFR0_L GPIO_REG(0x0054)
+ #define GAFR0_U GPIO_REG(0x0058)
+ #define GAFR1_L GPIO_REG(0x005C)
+ #define GAFR1_U GPIO_REG(0x0060)
+ #define GAFR2_L GPIO_REG(0x0064)
+ #define GAFR2_U GPIO_REG(0x0068)
+ #define GAFR3_L GPIO_REG(0x006C)
+ #define GAFR3_U GPIO_REG(0x0070)
+
+ /* More handy macros. The argument is a literal GPIO number. */
+
+ #define GPIO_bit(x) (1 << ((x) & 0x1f))
+
+ #define GPLR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x00)
+ #define GPDR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x0c)
+ #define GPSR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x18)
+ #define GPCR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x24)
+ #define GRER(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x30)
+ #define GFER(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x3c)
+ #define GEDR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x48)
+ #define GAFR(x) GPIO_REG(0x54 + (((x) & 0x70) >> 2))
+
+
+ #define NR_BUILTIN_GPIO PXA_GPIO_IRQ_NUM
+
+ #define gpio_to_bank(gpio) ((gpio) >> 5)
+
+ #ifdef CONFIG_CPU_PXA26x
+ /* GPIO86/87/88/89 on PXA26x have their direction bits in GPDR2 inverted,
+ * as well as their Alternate Function value being '1' for GPIO in GAFRx.
+ */
+ static inline int __gpio_is_inverted(unsigned gpio)
+ {
+ return cpu_is_pxa25x() && gpio > 85;
+ }
+ #else
+ static inline int __gpio_is_inverted(unsigned gpio) { return 0; }
+ #endif
+
+ /*
+ * On PXA25x and PXA27x, GAFRx and GPDRx together decide the alternate
+ * function of a GPIO, and GPDRx cannot be altered once configured. It
+ * is attributed as "occupied" here (I know this terminology isn't
+ * accurate, you are welcome to propose a better one :-)
+ */
+ static inline int __gpio_is_occupied(unsigned gpio)
+ {
+ if (cpu_is_pxa27x() || cpu_is_pxa25x()) {
+ int af = (GAFR(gpio) >> ((gpio & 0xf) * 2)) & 0x3;
+ int dir = GPDR(gpio) & GPIO_bit(gpio);
+
+ if (__gpio_is_inverted(gpio))
+ return af != 1 || dir == 0;
+ else
+ return af != 0 || dir != 0;
+ } else
+ return GPDR(gpio) & GPIO_bit(gpio);
+ }
+
+ #include <plat/gpio-pxa.h>
+ #endif /* __MACH_PXA_GPIO_PXA_H */
projects / users / hch / configfs.git / commitdiff