diff options
author | Linus Walleij <linus.walleij@linaro.org> | 2011-08-22 08:33:30 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-08-22 09:12:53 +0100 |
commit | 0f33286190634eeb3ec7638045980c39c98380f4 (patch) | |
tree | 385dfce25280fc464598fe080a56a434f711982d /arch/arm/plat-nomadik/include/plat/gpio-nomadik.h | |
parent | 8f3c4537bb08001c4772d66ad3fcfcf24d8d180d (diff) |
ARM: 7032/1: plat-nomadik: break out GPIO driver specifics
The <[plat|mach]/gpio.h> file is included from upper directories
and deal with generic GPIO and gpiolib stuff. Break out the
platform and driver specific defines and functions into its own
header file.
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-nomadik/include/plat/gpio-nomadik.h')
-rw-r--r-- | arch/arm/plat-nomadik/include/plat/gpio-nomadik.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/arch/arm/plat-nomadik/include/plat/gpio-nomadik.h b/arch/arm/plat-nomadik/include/plat/gpio-nomadik.h new file mode 100644 index 00000000000..3ba4d8f8073 --- /dev/null +++ b/arch/arm/plat-nomadik/include/plat/gpio-nomadik.h @@ -0,0 +1,85 @@ +/* + * Structures and registers for GPIO access in the Nomadik SoC + * + * Copyright (C) 2008 STMicroelectronics + * Author: Prafulla WADASKAR <prafulla.wadaskar@st.com> + * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it> + * + * 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. + */ + +#ifndef __PLAT_NOMADIK_GPIO +#define __PLAT_NOMADIK_GPIO + +/* + * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving + * the "gpio" namespace for generic and cross-machine functions + */ + +/* Register in the logic block */ +#define NMK_GPIO_DAT 0x00 +#define NMK_GPIO_DATS 0x04 +#define NMK_GPIO_DATC 0x08 +#define NMK_GPIO_PDIS 0x0c +#define NMK_GPIO_DIR 0x10 +#define NMK_GPIO_DIRS 0x14 +#define NMK_GPIO_DIRC 0x18 +#define NMK_GPIO_SLPC 0x1c +#define NMK_GPIO_AFSLA 0x20 +#define NMK_GPIO_AFSLB 0x24 + +#define NMK_GPIO_RIMSC 0x40 +#define NMK_GPIO_FIMSC 0x44 +#define NMK_GPIO_IS 0x48 +#define NMK_GPIO_IC 0x4c +#define NMK_GPIO_RWIMSC 0x50 +#define NMK_GPIO_FWIMSC 0x54 +#define NMK_GPIO_WKS 0x58 + +/* Alternate functions: function C is set in hw by setting both A and B */ +#define NMK_GPIO_ALT_GPIO 0 +#define NMK_GPIO_ALT_A 1 +#define NMK_GPIO_ALT_B 2 +#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) + +/* Pull up/down values */ +enum nmk_gpio_pull { + NMK_GPIO_PULL_NONE, + NMK_GPIO_PULL_UP, + NMK_GPIO_PULL_DOWN, +}; + +/* Sleep mode */ +enum nmk_gpio_slpm { + NMK_GPIO_SLPM_INPUT, + NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT, + NMK_GPIO_SLPM_NOCHANGE, + NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE, +}; + +extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode); +extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull); +extern int nmk_gpio_set_mode(int gpio, int gpio_mode); +extern int nmk_gpio_get_mode(int gpio); + +extern void nmk_gpio_wakeups_suspend(void); +extern void nmk_gpio_wakeups_resume(void); + +extern void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up); + +/* + * Platform data to register a block: only the initial gpio/irq number. + */ +struct nmk_gpio_platform_data { + char *name; + int first_gpio; + int first_irq; + int num_gpio; + u32 (*get_secondary_status)(unsigned int bank); + void (*set_ioforce)(bool enable); + bool supports_sleepmode; +}; + +#endif /* __PLAT_NOMADIK_GPIO */ |