diff options
Diffstat (limited to 'arch/arm/mach-davinci')
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/gpio-davinci.h | 90 | ||||
| -rw-r--r-- | arch/arm/mach-davinci/include/mach/gpio.h | 88 |
2 files changed, 0 insertions, 178 deletions
diff --git a/arch/arm/mach-davinci/include/mach/gpio-davinci.h b/arch/arm/mach-davinci/include/mach/gpio-davinci.h deleted file mode 100644 index 0d63b24cefc9..000000000000 --- a/arch/arm/mach-davinci/include/mach/gpio-davinci.h +++ /dev/null @@ -1,90 +0,0 @@ -/* - * TI DaVinci GPIO Support - * - * Copyright (c) 2006 David Brownell - * Copyright (c) 2007, MontaVista Software, Inc. <source@mvista.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. - */ - -#ifndef __DAVINCI_DAVINCI_GPIO_H -#define __DAVINCI_DAVINCI_GPIO_H - -#include <linux/io.h> -#include <linux/spinlock.h> - -#include <asm-generic/gpio.h> - -#include <mach/irqs.h> -#include <mach/common.h> - -enum davinci_gpio_type { - GPIO_TYPE_DAVINCI = 0, - GPIO_TYPE_TNETV107X, -}; - -/* - * basic gpio routines - * - * board-specific init should be done by arch/.../.../board-XXX.c (maybe - * initializing banks together) rather than boot loaders; kexec() won't - * go through boot loaders. - * - * the gpio clock will be turned on when gpios are used, and you may also - * need to pay attention to PINMUX registers to be sure those pins are - * used as gpios, not with other peripherals. - * - * On-chip GPIOs are numbered 0..(DAVINCI_N_GPIO-1). For documentation, - * and maybe for later updates, code may write GPIO(N). These may be - * all 1.8V signals, all 3.3V ones, or a mix of the two. A given chip - * may not support all the GPIOs in that range. - * - * GPIOs can also be on external chips, numbered after the ones built-in - * to the DaVinci chip. For now, they won't be usable as IRQ sources. - */ -#define GPIO(X) (X) /* 0 <= X <= (DAVINCI_N_GPIO - 1) */ - -/* Convert GPIO signal to GPIO pin number */ -#define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio)) - -struct davinci_gpio_controller { - struct gpio_chip chip; - int irq_base; - spinlock_t lock; - void __iomem *regs; - void __iomem *set_data; - void __iomem *clr_data; - void __iomem *in_data; - unsigned gpio_irq; -}; - -/* The __gpio_to_controller() and __gpio_mask() functions inline to constants - * with constant parameters; or in outlined code they execute at runtime. - * - * You'd access the controller directly when reading or writing more than - * one gpio value at a time, and to support wired logic where the value - * being driven by the cpu need not match the value read back. - * - * These are NOT part of the cross-platform GPIO interface - */ -static inline struct davinci_gpio_controller * -__gpio_to_controller(unsigned gpio) -{ - struct davinci_gpio_controller *ctlrs = davinci_soc_info.gpio_ctlrs; - int index = gpio / 32; - - if (!ctlrs || index >= davinci_soc_info.gpio_ctlrs_num) - return NULL; - - return ctlrs + index; -} - -static inline u32 __gpio_mask(unsigned gpio) -{ - return 1 << (gpio % 32); -} - -#endif /* __DAVINCI_DAVINCI_GPIO_H */ diff --git a/arch/arm/mach-davinci/include/mach/gpio.h b/arch/arm/mach-davinci/include/mach/gpio.h deleted file mode 100644 index 960e9de47e1e..000000000000 --- a/arch/arm/mach-davinci/include/mach/gpio.h +++ /dev/null @@ -1,88 +0,0 @@ -/* - * TI DaVinci GPIO Support - * - * Copyright (c) 2006 David Brownell - * Copyright (c) 2007, MontaVista Software, Inc. <source@mvista.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. - */ - -#ifndef __DAVINCI_GPIO_H -#define __DAVINCI_GPIO_H - -#include <asm-generic/gpio.h> - -#define __ARM_GPIOLIB_COMPLEX - -/* The inline versions use the static inlines in the driver header */ -#include "gpio-davinci.h" - -/* - * The get/set/clear functions will inline when called with constant - * parameters referencing built-in GPIOs, for low-overhead bitbanging. - * - * gpio_set_value() will inline only on traditional Davinci style controllers - * with distinct set/clear registers. - * - * Otherwise, calls with variable parameters or referencing external - * GPIOs (e.g. on GPIO expander chips) use outlined functions. - */ -static inline void gpio_set_value(unsigned gpio, int value) -{ - if (__builtin_constant_p(value) && gpio < davinci_soc_info.gpio_num) { - struct davinci_gpio_controller *ctlr; - u32 mask; - - ctlr = __gpio_to_controller(gpio); - - if (ctlr->set_data != ctlr->clr_data) { - mask = __gpio_mask(gpio); - if (value) - __raw_writel(mask, ctlr->set_data); - else - __raw_writel(mask, ctlr->clr_data); - return; - } - } - - __gpio_set_value(gpio, value); -} - -/* Returns zero or nonzero; works for gpios configured as inputs OR - * as outputs, at least for built-in GPIOs. - * - * NOTE: for built-in GPIOs, changes in reported values are synchronized - * to the GPIO clock. This is easily seen after calling gpio_set_value() - * and then immediately gpio_get_value(), where the gpio_get_value() will - * return the old value until the GPIO clock ticks and the new value gets - * latched. - */ -static inline int gpio_get_value(unsigned gpio) -{ - struct davinci_gpio_controller *ctlr; - - if (!__builtin_constant_p(gpio) || gpio >= davinci_soc_info.gpio_num) - return __gpio_get_value(gpio); - - ctlr = __gpio_to_controller(gpio); - return __gpio_mask(gpio) & __raw_readl(ctlr->in_data); -} - -static inline int gpio_cansleep(unsigned gpio) -{ - if (__builtin_constant_p(gpio) && gpio < davinci_soc_info.gpio_num) - return 0; - else - return __gpio_cansleep(gpio); -} - -static inline int irq_to_gpio(unsigned irq) -{ - /* don't support the reverse mapping */ - return -ENOSYS; -} - -#endif /* __DAVINCI_GPIO_H */ |