b9df468d86
Enable wakeups by default for any GPIO interrupts and in the suspend/resume path narrow this down to only the the real wakeup interrupts. This approach is based on the assumption that cpuidle ApSleep will be entered more often than system suspend. Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> [Fixup for genirq changes to struct irq_data on 2.6.38] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
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* Structures and registers for GPIO access in the Nomadik SoC
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*
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* Copyright (C) 2008 STMicroelectronics
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* Author: Prafulla WADASKAR <prafulla.wadaskar@st.com>
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* Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_PLAT_GPIO_H
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#define __ASM_PLAT_GPIO_H
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#include <asm-generic/gpio.h>
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/*
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* These currently cause a function call to happen, they may be optimized
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* if needed by adding cpu-specific defines to identify blocks
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* (see mach-pxa/include/mach/gpio.h as an example using GPLR etc)
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*/
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#define gpio_get_value __gpio_get_value
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#define gpio_set_value __gpio_set_value
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#define gpio_cansleep __gpio_cansleep
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#define gpio_to_irq __gpio_to_irq
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/*
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* "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving
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* the "gpio" namespace for generic and cross-machine functions
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*/
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/* Register in the logic block */
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#define NMK_GPIO_DAT 0x00
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#define NMK_GPIO_DATS 0x04
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#define NMK_GPIO_DATC 0x08
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#define NMK_GPIO_PDIS 0x0c
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#define NMK_GPIO_DIR 0x10
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#define NMK_GPIO_DIRS 0x14
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#define NMK_GPIO_DIRC 0x18
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#define NMK_GPIO_SLPC 0x1c
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#define NMK_GPIO_AFSLA 0x20
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#define NMK_GPIO_AFSLB 0x24
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#define NMK_GPIO_RIMSC 0x40
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#define NMK_GPIO_FIMSC 0x44
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#define NMK_GPIO_IS 0x48
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#define NMK_GPIO_IC 0x4c
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#define NMK_GPIO_RWIMSC 0x50
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#define NMK_GPIO_FWIMSC 0x54
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#define NMK_GPIO_WKS 0x58
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/* Alternate functions: function C is set in hw by setting both A and B */
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#define NMK_GPIO_ALT_GPIO 0
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#define NMK_GPIO_ALT_A 1
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#define NMK_GPIO_ALT_B 2
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#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)
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/* Pull up/down values */
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enum nmk_gpio_pull {
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NMK_GPIO_PULL_NONE,
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NMK_GPIO_PULL_UP,
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NMK_GPIO_PULL_DOWN,
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};
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/* Sleep mode */
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enum nmk_gpio_slpm {
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NMK_GPIO_SLPM_INPUT,
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NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
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NMK_GPIO_SLPM_NOCHANGE,
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NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
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};
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extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode);
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extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull);
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extern int nmk_gpio_set_mode(int gpio, int gpio_mode);
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extern int nmk_gpio_get_mode(int gpio);
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extern void nmk_gpio_wakeups_suspend(void);
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extern void nmk_gpio_wakeups_resume(void);
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/*
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* Platform data to register a block: only the initial gpio/irq number.
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*/
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struct nmk_gpio_platform_data {
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char *name;
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int first_gpio;
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int first_irq;
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int num_gpio;
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u32 (*get_secondary_status)(unsigned int bank);
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void (*set_ioforce)(bool enable);
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};
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#endif /* __ASM_PLAT_GPIO_H */
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