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ARM: 7040/1: mach-davinci: break out GPIO driver specifics

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The <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: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Linus Walleij 2011-08-22 08:40:38 +01:00 committed by Russell King
parent bd08d709c4
commit 5f3fcf9649
9 changed files with 100 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-davinci/da830.c
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@ -20,6 +20,7 @@
#include <mach/common.h>
#include <mach/time.h>
#include <mach/da8xx.h>
#include <mach/gpio-davinci.h>
#include "clock.h"
#include "mux.h"

1
arch/arm/mach-davinci/da850.c
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@ -28,6 +28,7 @@
#include <mach/da8xx.h>
#include <mach/cpufreq.h>
#include <mach/pm.h>
#include <mach/gpio-davinci.h>
#include "clock.h"
#include "mux.h"

2
arch/arm/mach-davinci/dm355.c
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@ -13,7 +13,6 @@
#include <linux/serial_8250.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/gpio.h>
#include <linux/spi/spi.h>
@ -30,6 +29,7 @@
#include <mach/common.h>
#include <mach/asp.h>
#include <mach/spi.h>
#include <mach/gpio-davinci.h>
#include "clock.h"
#include "mux.h"

3
arch/arm/mach-davinci/dm365.c
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@ -17,7 +17,6 @@
#include <linux/serial_8250.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <asm/mach/map.h>
@ -34,7 +33,7 @@
#include <mach/asp.h>
#include <mach/keyscan.h>
#include <mach/spi.h>
#include <mach/gpio-davinci.h>
#include "clock.h"
#include "mux.h"

2
arch/arm/mach-davinci/dm644x.c
View File

@ -12,7 +12,6 @@
#include <linux/clk.h>
#include <linux/serial_8250.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <asm/mach/map.h>
@ -26,6 +25,7 @@
#include <mach/serial.h>
#include <mach/common.h>
#include <mach/asp.h>
#include <mach/gpio-davinci.h>
#include "clock.h"
#include "mux.h"

2
arch/arm/mach-davinci/dm646x.c
View File

@ -13,7 +13,6 @@
#include <linux/clk.h>
#include <linux/serial_8250.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <asm/mach/map.h>
@ -27,6 +26,7 @@
#include <mach/serial.h>
#include <mach/common.h>
#include <mach/asp.h>
#include <mach/gpio-davinci.h>
#include "clock.h"
#include "mux.h"

91
arch/arm/mach-davinci/include/mach/gpio-davinci.h Normal file
View File

@ -0,0 +1,91 @@
/*
* 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>
#define DAVINCI_GPIO_BASE 0x01C67000
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;
};
/* 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 */

76
arch/arm/mach-davinci/include/mach/gpio.h
View File

@ -13,82 +13,10 @@
#ifndef __DAVINCI_GPIO_H
#define __DAVINCI_GPIO_H
#include <linux/io.h>
#include <linux/spinlock.h>
#include <asm-generic/gpio.h>
#include <mach/irqs.h>
#include <mach/common.h>
#define __ARM_GPIOLIB_COMPLEX
#define DAVINCI_GPIO_BASE 0x01C67000
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;
};
/* 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);
}
/* 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

1
arch/arm/mach-davinci/tnetv107x.c
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@ -30,6 +30,7 @@
#include <mach/irqs.h>
#include <mach/hardware.h>
#include <mach/tnetv107x.h>
#include <mach/gpio-davinci.h>
#include "clock.h"
#include "mux.h"