72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
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/* arch/arm/mach-msm/gpio_chip.h
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*
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* Copyright (C) 2007 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _LINUX_GPIO_CHIP_H
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#define _LINUX_GPIO_CHIP_H
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#include <linux/list.h>
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#include <linux/gpio.h>
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#define GPIOF_IRQF_MASK 0x0000ffff /* use to specify edge detection without */
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#define GPIOF_IRQF_TRIGGER_NONE 0x00010000 /* IRQF_TRIGGER_NONE is 0 which also means "as already configured" */
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#define GPIOF_INPUT 0x00020000
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#define GPIOF_DRIVE_OUTPUT 0x00040000
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#define GPIOF_OUTPUT_LOW 0x00080000
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#define GPIOF_OUTPUT_HIGH 0x00100000
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#define MSM_GPIO_BROKEN_INT_CLEAR 1
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struct old_gpio_chip {
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struct gpio_chip gpio_chip;
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#define gpio_chip old_gpio_chip
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struct device *dev; /* used for pmic8058-gpio*/
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spinlock_t lock;
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unsigned int start;
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unsigned int end;
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int (*configure)(struct gpio_chip *chip, unsigned int gpio, unsigned long flags);
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int (*get_irq_num)(struct gpio_chip *chip, unsigned int gpio, unsigned int *irqp, unsigned long *irqnumflagsp);
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int (*read)(struct gpio_chip *chip, unsigned int gpio);
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int (*write)(struct gpio_chip *chip, unsigned int gpio, unsigned on);
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int (*read_detect_status)(struct gpio_chip *chip, unsigned int gpio);
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int (*clear_detect_status)(struct gpio_chip *chip, unsigned int gpio);
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};
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struct msm_gpio_regs {
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void __iomem *out;
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void __iomem *in;
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void __iomem *int_status;
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void __iomem *int_clear;
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void __iomem *int_en;
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void __iomem *int_edge;
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void __iomem *int_pos;
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void __iomem *oe;
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};
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struct msm_gpio_chip {
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struct gpio_chip chip;
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struct msm_gpio_regs regs;
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#if MSM_GPIO_BROKEN_INT_CLEAR
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unsigned int_status_copy;
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#endif
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unsigned int both_edge_detect;
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unsigned int int_enable[2]; /* 0: awake, 1: sleep */
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};
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int register_gpio_chip(struct gpio_chip *gpio_chip);
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#endif
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