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[kernel] gpiodev/gpioctl RIP

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33725 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
blogic 2012-10-11 11:58:09 +00:00
parent 010df499e3
commit 19c78e1905
17 changed files with 3 additions and 404 deletions
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43
package/gpioctl/Makefile
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@ -1,43 +0,0 @@
#
# Copyright (C) 2008 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=gpioctl
PKG_RELEASE:=1
PKG_VERSION:=1.0
include $(INCLUDE_DIR)/package.mk
define Package/gpioctl
SECTION:=utils
CATEGORY:=Utilities
TITLE:=Tool for controlling gpio pins
DEPENDS:=@GPIO_SUPPORT
endef
define Package/gpioctl/description
Tool for controlling gpio pins
endef
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Build/Compile
$(MAKE) -C $(PKG_BUILD_DIR) \
$(TARGET_CONFIGURE_OPTS) CFLAGS="$(TARGET_CFLAGS) -I$(LINUX_DIR)/include"
endef
define Package/gpioctl/install
$(INSTALL_DIR) $(1)/usr/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/gpioctl $(1)/usr/bin/
endef
$(eval $(call BuildPackage,gpioctl))

24
package/gpioctl/src/Makefile
View File

@ -1,24 +0,0 @@
PROGS = gpioctl
INSTDIR = $(prefix)/usr/bin
INSTMODE = 0755
INSTOWNER = root
INSTGROUP = root
OBJS = main.o
all: $(PROGS)
$(PROGS): $(OBJS)
$(CC) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
$(STRIP) $@
%.o: %.c
$(CC) -c $(CFLAGS) $^ -o $@
install: $(PROGS)
$(INSTALL) -d $(INSTDIR)
$(INSTALL) -m $(INSTMODE) -o $(INSTOWNER) -g $(INSTGROUP) $(PROGS) $(INSTDIR)
clean:
rm -f $(PROGS) *.o core

76
package/gpioctl/src/main.c
View File

@ -1,76 +0,0 @@
/*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
*
* Feedback, Bugs... blogic@openwrt.org
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/gpio_dev.h>
#include <linux/ioctl.h>
void
print_usage()
{
printf("gpioctl dirin|dirout|get|set|clear gpio\n");
exit(0);
}
int
main(int argc, char **argv)
{
int gpio_pin;
int fd;
int result = 0;
if (argc != 3)
{
print_usage();
}
if ((fd = open("/dev/gpio", O_RDWR)) < 0)
{
printf("Error whilst opening /dev/gpio\n");
return -1;
}
gpio_pin = atoi(argv[2]);
printf("using gpio pin %d\n", gpio_pin);
if (!strcmp(argv[1], "dirin"))
{
ioctl(fd, GPIO_DIR_IN, gpio_pin);
} else if (!strcmp(argv[1], "dirout"))
{
ioctl(fd, GPIO_DIR_OUT, gpio_pin);
} else if (!strcmp(argv[1], "get"))
{
result = ioctl(fd, GPIO_GET, gpio_pin);
printf("Pin %d is %s\n", gpio_pin, (result ? "HIGH" : "LOW"));
} else if (!strcmp(argv[1], "set"))
{
ioctl(fd, GPIO_SET, gpio_pin);
} else if (!strcmp(argv[1], "clear"))
{
ioctl(fd, GPIO_CLEAR, gpio_pin);
} else print_usage();
return result;
}

2
target/linux/at91/9260/profiles/001-flexibity-xwrt.mk
View File

@ -13,7 +13,7 @@ define Profile/flexibity-xwrt
usb-modem-nokia-5800 wpa-cli wpa-supplicant motion badblocks blkid cifsmount disktype dosfsck dosfslabel e2fsprogs \
fuse-utils mkdosfs nfs-utils ntfs-3g ntfs-3g-utils reiserfsprogs resize2fs sysfsutils tune2fs uuidgen certtool \
gnutls-utils picocom setterm unrar unzip sqlite3-cli alsa-utils anyremote bluez-utils bzip2 comgt crypto-tools \
file flock gdbserver gnupg gpioctl gsm-utils gzip huaweiaktbbo hwclock i2c-tools input-utils ldd lsof mdadm \
file flock gdbserver gnupg gsm-utils gzip huaweiaktbbo hwclock i2c-tools input-utils ldd lsof mdadm \
module-init-tools mount-utils openssl-util procps psmisc px5g screen strace stress sysstat uboot-envtools \
usb-modeswitch usb-modeswitch-data usbutils lua
endef

2
target/linux/at91/9260/profiles/002-flexibity-luci.mk
View File

@ -13,7 +13,7 @@ define Profile/flexibity-luci
usb-modem-nokia-5800 wpa-cli wpa-supplicant motion badblocks blkid cifsmount disktype dosfsck dosfslabel e2fsprogs \
fuse-utils mkdosfs nfs-utils ntfs-3g ntfs-3g-utils reiserfsprogs resize2fs sysfsutils tune2fs uuidgen certtool \
gnutls-utils picocom setterm unrar unzip sqlite3-cli alsa-utils anyremote bluez-utils bzip2 comgt crypto-tools \
file flock gdbserver gnupg gpioctl gsm-utils gzip huaweiaktbbo hwclock i2c-tools input-utils ldd lsof mdadm \
file flock gdbserver gnupg gsm-utils gzip huaweiaktbbo hwclock i2c-tools input-utils ldd lsof mdadm \
module-init-tools mount-utils openssl-util procps psmisc px5g screen strace stress sysstat uboot-envtools \
usb-modeswitch usb-modeswitch-data usbutils lua
endef

1
target/linux/at91/config-default
View File

@ -73,7 +73,6 @@ CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVICE=y
CONFIG_GPIO_SYSFS=y
# CONFIG_HAMRADIO is not set
CONFIG_HARDIRQS_SW_RESEND=y

2
target/linux/atheros/Makefile
View File

@ -15,7 +15,7 @@ LINUX_VERSION:=3.3.8
include $(INCLUDE_DIR)/target.mk
DEFAULT_PACKAGES += wpad-mini kmod-ath5k gpioctl swconfig
DEFAULT_PACKAGES += wpad-mini kmod-ath5k swconfig
define Target/Description
Build firmware images for Atheros SoC boards

1
target/linux/atheros/config-3.3
View File

@ -39,7 +39,6 @@ CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVICE=y
CONFIG_GPIO_SYSFS=y
# CONFIG_HAMRADIO is not set
CONFIG_HARDWARE_WATCHPOINTS=y

1
target/linux/generic/config-3.3
View File

@ -801,7 +801,6 @@ CONFIG_GENERIC_TIME=y
# CONFIG_GPIO_ADP5588 is not set
# CONFIG_GPIO_BT8XX is not set
# CONFIG_GPIO_CS5535 is not set
# CONFIG_GPIO_DEVICE is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_IT8761E is not set
# CONFIG_GPIO_LANGWELL is not set

181
target/linux/generic/files/drivers/char/gpio_dev.c
View File

@ -1,181 +0,0 @@
/*
* character device wrapper for generic gpio layer
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
*
* Feedback, Bugs... blogic@openwrt.org
*
* dpg 20100106
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include <asm/atomic.h>
#include <linux/init.h>
#include <linux/genhd.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/gpio_dev.h>
#include <linux/fs.h>
#define DRVNAME "gpiodev"
#define DEVNAME "gpio"
static int dev_major;
static struct class *gpiodev_class;
/* third argument of user space ioctl ('arg' here) contains the <pin> */
static int
gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int retval = 0;
switch (cmd)
{
case GPIO_GET:
retval = gpio_get_value(arg);
break;
case GPIO_SET:
gpio_set_value(arg, 1);
break;
case GPIO_CLEAR:
gpio_set_value(arg, 0);
break;
case GPIO_DIR_IN:
retval = gpio_direction_input(arg);
break;
case GPIO_DIR_OUT:
retval = gpio_direction_output(arg, 0);
break;
case GPIO_DIR_HIGH:
retval = gpio_direction_output(arg, 1);
break;
case GPIO_REQUEST:
/* should be first ioctl operation on <pin> */
retval = gpio_request(arg, DRVNAME);
break;
case GPIO_FREE:
/* should be last ioctl operation on <pin> */
/* may be needed first if previous user missed this ioctl */
gpio_free(arg);
break;
case GPIO_CAN_SLEEP:
retval = gpio_cansleep(arg);
break;
default:
retval = -EINVAL;
/* = -ENOTTY; // correct return but ... */
break;
}
return retval;
}
/* Allow co-incident opens */
static int
gpio_open(struct inode *inode, struct file *file)
{
int result = 0;
unsigned int dev_minor = MINOR(inode->i_rdev);
if (dev_minor != 0)
{
printk(KERN_ERR DRVNAME ": trying to access unknown minor device -> %d\n", dev_minor);
result = -ENODEV;
goto out;
}
out:
return result;
}
static int
gpio_close(struct inode * inode, struct file * file)
{
/* could track all <pin>s requested by this fd and gpio_free()
* them here
*/
return 0;
}
struct file_operations gpio_fops = {
unlocked_ioctl: gpio_ioctl,
open: gpio_open,
release: gpio_close
};
static int
gpio_probe(struct platform_device *dev)
{
int result = 0;
dev_major = register_chrdev(0, DEVNAME, &gpio_fops);
if (!dev_major)
{
printk(KERN_ERR DRVNAME ": Error whilst opening %s \n", DEVNAME);
result = -ENODEV;
goto out;
}
gpiodev_class = class_create(THIS_MODULE, DRVNAME);
device_create(gpiodev_class, NULL, MKDEV(dev_major, 0), dev, DEVNAME);
printk(KERN_INFO DRVNAME ": gpio device registered with major %d\n", dev_major);
out:
return result;
}
static int
gpio_remove(struct platform_device *dev)
{
device_destroy(gpiodev_class, MKDEV(dev_major, 0));
class_destroy(gpiodev_class);
unregister_chrdev(dev_major, DEVNAME);
return 0;
}
static struct
platform_driver gpio_driver = {
.probe = gpio_probe,
.remove = gpio_remove,
.driver = {
.name = "GPIODEV",
.owner = THIS_MODULE,
},
};
static int __init
gpio_mod_init(void)
{
int ret = platform_driver_register(&gpio_driver);
if (ret)
printk(KERN_INFO DRVNAME ": Error registering platfom driver!\n");
return ret;
}
static void __exit
gpio_mod_exit(void)
{
platform_driver_unregister(&gpio_driver);
}
module_init (gpio_mod_init);
module_exit (gpio_mod_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("John Crispin / OpenWrt +");
MODULE_DESCRIPTION("Character device for for generic gpio api");

42
target/linux/generic/files/include/linux/gpio_dev.h
View File

@ -1,42 +0,0 @@
#ifndef _GPIO_DEV_H__
#define _GPIO_DEV_H__
/*********************************************************************
*
* This Linux kernel header is expanded from the original driver
* (gpio_dev) by John Crispin. It provides an ioctl based interface to
* GPIO pins via the /dev/gpio char device and gpiolib within the kernel.
* The third argument to each ioctl is the GPIO pin number.
*
* This driver has been tested with lk 2.6.31 and works. The original
* driver fails quietly with this version. The protocol is now a bit
* different: the ioctl(fd, GPIO_REQUEST, <pin>) should be called
* after the open("/dev/gpio", O_RDWR) to determine if the <pin> is
* already in use. If the ioctl is successful (i.e. returns 0 for not
* in use) then the <pin> is claimed by this driver and
* ioctl(fd, GPIO_FREE, <pin>) should be called prior to close(fd) .
*
* See <kernel_source>/Documentation/gpio.txt
* Note that kernel designers prefer the use of the sysfs gpio interface.
* This char driver is easier to use from code and faster.
********************************************************************/
/* This header can be included in both the user and kernel spaces */
/* The _IO macro is defined in sys/ioctl.h */
#define IOC_GPIODEV_MAGIC 'B'
#define GPIO_GET _IO(IOC_GPIODEV_MAGIC, 10)
#define GPIO_SET _IO(IOC_GPIODEV_MAGIC, 11)
#define GPIO_CLEAR _IO(IOC_GPIODEV_MAGIC, 12)
#define GPIO_DIR_IN _IO(IOC_GPIODEV_MAGIC, 13)
#define GPIO_DIR_OUT _IO(IOC_GPIODEV_MAGIC, 14)
/* Sets the direction out and clears the <pin> (low) */
#define GPIO_DIR_HIGH _IO(IOC_GPIODEV_MAGIC, 15)
/* Sets the direction out and sets the <pin> (high) */
#define GPIO_REQUEST _IO(IOC_GPIODEV_MAGIC, 16)
#define GPIO_FREE _IO(IOC_GPIODEV_MAGIC, 17)
#define GPIO_CAN_SLEEP _IO(IOC_GPIODEV_MAGIC, 18)
#endif

27
target/linux/generic/patches-3.3/835-gpiodev.patch
View File

@ -1,27 +0,0 @@
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -511,6 +511,14 @@ config NSC_GPIO
pc8736x_gpio drivers. If those drivers are built as
modules, this one will be too, named nsc_gpio
+config GPIO_DEVICE
+ tristate "GPIO device support"
+ depends on GENERIC_GPIO
+ help
+ Say Y to enable Linux GPIO device support. This allows control of
+ GPIO pins using a character device
+
+
config RAW_DRIVER
tristate "RAW driver (/dev/raw/rawN)"
depends on BLOCK
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -47,6 +47,7 @@ obj-$(CONFIG_NWFLASH) += nwflash.o
obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o
obj-$(CONFIG_PC8736x_GPIO) += pc8736x_gpio.o
obj-$(CONFIG_NSC_GPIO) += nsc_gpio.o
+obj-$(CONFIG_GPIO_DEVICE) += gpio_dev.o
obj-$(CONFIG_GPIO_TB0219) += tb0219.o
obj-$(CONFIG_TELCLOCK) += tlclk.o

1
target/linux/ixp4xx/config-3.3
View File

@ -58,7 +58,6 @@ CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVICE=y
CONFIG_GPIO_GW_I2C_PLD=y
CONFIG_GPIO_SYSFS=y
# CONFIG_HAMRADIO is not set

1
target/linux/mpc83xx/config-3.3
View File

@ -106,7 +106,6 @@ CONFIG_GEN_RTC=y
# CONFIG_GEN_RTC_X is not set
CONFIG_GIANFAR=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVICE=y
CONFIG_GPIO_MPC8XXX=y
CONFIG_GPIO_SYSFS=y
# CONFIG_HAMRADIO is not set

1
target/linux/omap35xx/config-2.6.32
View File

@ -394,7 +394,6 @@ CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_TIME=y
# CONFIG_GPIO_DEVICE is not set
CONFIG_GPIOLIB=y
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MAX732X is not set

1
target/linux/orion/dns323/config-3.3
View File

@ -19,7 +19,6 @@ CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
CONFIG_EXT4_FS=y
CONFIG_FS_MBCACHE=y
CONFIG_GPIO_DEVICE=y
CONFIG_INPUT=y
CONFIG_INPUT_EVDEV=y
CONFIG_INPUT_KEYBOARD=y

1
target/linux/s3c24xx/openmoko-gta02/config-2.6.30
View File

@ -101,7 +101,6 @@ CONFIG_GENERIC_FIND_LAST_BIT=y
CONFIG_GENERIC_GPIO=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
# CONFIG_GENERIC_TIME is not set
CONFIG_GPIO_DEVICE=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
# CONFIG_HAMRADIO is not set