diff options
Diffstat (limited to 'target/linux/at91/patches-2.6.22/003-gpio-driver.patch')
| -rw-r--r-- | target/linux/at91/patches-2.6.22/003-gpio-driver.patch | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/target/linux/at91/patches-2.6.22/003-gpio-driver.patch b/target/linux/at91/patches-2.6.22/003-gpio-driver.patch deleted file mode 100644 index 8d37824..0000000 --- a/target/linux/at91/patches-2.6.22/003-gpio-driver.patch +++ /dev/null @@ -1,363 +0,0 @@ -Index: linux-2.6.22.19/arch/arm/mach-at91/gpio.c -=================================================================== ---- linux-2.6.22.19.orig/arch/arm/mach-at91/gpio.c -+++ linux-2.6.22.19/arch/arm/mach-at91/gpio.c -@@ -27,6 +27,7 @@ - - static struct at91_gpio_bank *gpio; - static int gpio_banks; -+static u32 pio_gpio_pin[4] = { 0, 0, 0, 0 }; - - - static inline void __iomem *pin_to_controller(unsigned pin) -@@ -71,9 +72,13 @@ int __init_or_module at91_set_GPIO_perip - { - void __iomem *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); -+ int bank = (pin - PIN_BASE) / 32; - - if (!pio) - return -EINVAL; -+ -+ pio_gpio_pin[bank] |= mask; -+ - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR)); - __raw_writel(mask, pio + PIO_PER); -@@ -130,10 +135,13 @@ int __init_or_module at91_set_gpio_input - { - void __iomem *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); -+ int bank = (pin - PIN_BASE) / 32; - - if (!pio) - return -EINVAL; - -+ pio_gpio_pin[bank] |= mask; -+ - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR)); - __raw_writel(mask, pio + PIO_ODR); -@@ -151,10 +159,13 @@ int __init_or_module at91_set_gpio_outpu - { - void __iomem *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); -+ int bank = (pin - PIN_BASE) / 32; - - if (!pio) - return -EINVAL; - -+ pio_gpio_pin[bank] |= mask; -+ - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + PIO_PUDR); - __raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR)); -@@ -262,6 +273,18 @@ int at91_get_gpio_value(unsigned pin) - } - EXPORT_SYMBOL(at91_get_gpio_value); - -+int at91_is_pin_gpio(unsigned pin) -+{ -+ void __iomem *pio = pin_to_controller(pin); -+ unsigned mask = pin_to_mask(pin); -+ int bank = (pin - PIN_BASE) / 32; -+ -+ if (!pio) -+ return -EINVAL; -+ return (pio_gpio_pin[bank] & mask) != 0; -+} -+EXPORT_SYMBOL(at91_is_pin_gpio); -+ - /*--------------------------------------------------------------------------*/ - - #ifdef CONFIG_PM -Index: linux-2.6.22.19/drivers/char/Kconfig -=================================================================== ---- linux-2.6.22.19.orig/drivers/char/Kconfig -+++ linux-2.6.22.19/drivers/char/Kconfig -@@ -1099,5 +1099,12 @@ config AT91_SPIDEV - The SPI driver gives user mode access to this serial - bus on the AT91RM9200 processor. - -+config AT91_VLIO -+ tristate "Versalink LED and GPIO interface" -+ depends on ARCH_AT91RM9200 && MACH_VLINK -+ default n -+ help -+ Provides a handler GPIO's in userspace -+ - endmenu - -Index: linux-2.6.22.19/drivers/char/Makefile -=================================================================== ---- linux-2.6.22.19.orig/drivers/char/Makefile -+++ linux-2.6.22.19/drivers/char/Makefile -@@ -95,6 +95,7 @@ obj-$(CONFIG_GPIO_TB0219) += tb0219.o - obj-$(CONFIG_TELCLOCK) += tlclk.o - obj-$(CONFIG_AT91_SPI) += at91_spi.o - obj-$(CONFIG_AT91_SPIDEV) += at91_spidev.o -+obj-$(CONFIG_AT91_VLIO) += vlink_giu.o - - obj-$(CONFIG_WATCHDOG) += watchdog/ - obj-$(CONFIG_MWAVE) += mwave/ -Index: linux-2.6.22.19/drivers/char/vlink_giu.c -=================================================================== ---- /dev/null -+++ linux-2.6.22.19/drivers/char/vlink_giu.c -@@ -0,0 +1,256 @@ -+/* -+ * Driver for FDL Versalink GPIO -+ * -+ * Copyright (C) 2005 Guthrie Consulting -+ * Author: Hamish Guthrie <hamish@prodigi.ch> -+ * -+ * 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, MA 02111-1307 USA -+ */ -+ -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+ -+#include <linux/kernel.h> -+#include <linux/slab.h> -+#include <linux/fs.h> -+#include <linux/errno.h> -+#include <linux/init.h> -+#include <linux/types.h> -+#include <linux/proc_fs.h> -+#include <linux/fcntl.h> -+#include <linux/seq_file.h> -+#include <linux/cdev.h> -+#include <asm/arch/gpio.h> -+#include <asm/uaccess.h> -+ -+static int major; /* default is dynamic major device number */ -+module_param(major, int, 0); -+MODULE_PARM_DESC(major, "Major device number"); -+ -+#define VIO_NR_DEVS 96 -+ -+struct vio_dev { -+ struct cdev cdev; -+}; -+ -+struct vio_dev *vio_devices; -+static struct class *vio_class; -+ -+static ssize_t gpio_read(struct file *file, char __user *buf, size_t len, -+ loff_t *ppos) -+{ -+ unsigned int pin; -+ int retval; -+ char value = '0'; -+ -+ pin = iminor(file->f_dentry->d_inode); -+ -+ retval = at91_get_gpio_value(PIN_BASE + pin); -+ if (retval < 0) -+ return -EFAULT; -+ -+ value = retval + 0x30; -+ if (put_user(value, buf)) -+ return -EFAULT; -+ -+ return 1; -+} -+ -+static ssize_t gpio_write(struct file *file, const char __user *data, -+ size_t len, loff_t *ppos) -+{ -+ unsigned int pin; -+ size_t i; -+ char c; -+ int retval = 0; -+ -+ pin = iminor(file->f_dentry->d_inode); -+ -+ for (i = 0; i < len; i++) { -+ if (get_user(c, data + i)) -+ return -EFAULT; -+ -+ switch (c) { -+ case '0': -+ case '1': -+ retval = at91_set_gpio_value(PIN_BASE + pin, (int)c - 0x30); -+ if (retval < 0) -+ return -EFAULT; -+ break; -+ default: -+ break; -+ } -+ -+ if (retval < 0) -+ break; -+ } -+ -+ return i; -+} -+ -+static int gpio_open(struct inode *inode, struct file *file) -+{ -+ return nonseekable_open(inode, file); -+} -+ -+static int gpio_release(struct inode *inode, struct file *file) -+{ -+ return 0; -+} -+ -+static struct file_operations vio_fops = { -+ .owner = THIS_MODULE, -+ .read = gpio_read, -+ .write = gpio_write, -+ .open = gpio_open, -+ .release = gpio_release, -+}; -+ -+static void vio_setup_cdev(struct vio_dev *dev, int index) -+{ -+ int err, devno = MKDEV(major, index); -+ -+ cdev_init(&dev->cdev, &vio_fops); -+ dev->cdev.owner = THIS_MODULE; -+ dev->cdev.ops = &vio_fops; -+ err = cdev_add (&dev->cdev, devno, 1); -+ if (err) -+ printk(KERN_NOTICE "vio: Error %d adding vio%d", err, index); -+} -+ -+static int vio_remove(struct platform_device *dev) -+{ -+ int i; -+ dev_t devno = MKDEV(major, 0); -+ -+ if (vio_devices) { -+ for(i=0; i<VIO_NR_DEVS; i++) { -+ int iodev = at91_is_pin_gpio(PIN_BASE + i); -+ if (iodev) { -+ cdev_del(&vio_devices[i].cdev); -+ class_device_destroy(vio_class, MKDEV(major, i)); -+ } -+ } -+ kfree(vio_devices); -+ } -+ -+ class_destroy(vio_class); -+ unregister_chrdev_region(devno, VIO_NR_DEVS); -+ -+ platform_set_drvdata(dev, NULL); -+ -+ return 0; -+} -+ -+static int vio_probe(struct platform_device *dev) -+{ -+ int retval, i, j; -+ dev_t vdev = 0; -+ -+ if (major) { -+ vdev = MKDEV(major, 0); -+ retval = register_chrdev_region(vdev, VIO_NR_DEVS, "vio"); -+ } else { -+ retval = alloc_chrdev_region(&vdev, 0, VIO_NR_DEVS, "vio"); -+ major = MAJOR(vdev); -+ } -+ if (retval < 0) { -+ printk(KERN_WARNING "vio: can't get major %d\n", major); -+ return retval; -+ } -+ -+ if (major == 0) { -+ major = retval; -+ printk(KERN_INFO "vio: major number %d\n", major); -+ } -+ -+ vio_class = class_create(THIS_MODULE, "vio"); -+ -+ if (IS_ERR(vio_class)) { -+ printk(KERN_ERR "vio: Error creating vio class\n"); -+ vio_remove(dev); -+ return PTR_ERR(vio_class); -+ } -+ -+ vio_devices = kmalloc(VIO_NR_DEVS * sizeof(struct vio_dev), GFP_KERNEL); -+ if (!vio_devices) { -+ retval = -ENOMEM; -+ goto fail; -+ } -+ memset(vio_devices, 0, VIO_NR_DEVS * sizeof(struct vio_dev)); -+ -+ for (i=0; i<VIO_NR_DEVS/32; i++) -+ for(j=0; j<32; j++) { -+ int iodev = at91_is_pin_gpio(PIN_BASE + i*32 + j); -+ if (iodev) { -+ vio_setup_cdev(&vio_devices[i*32 + j], i*32 + j); -+ class_device_create(vio_class, NULL, MKDEV(major, i*32 + j), NULL, -+ "vio%c%d", i + 'A', j); -+ } -+ } -+ -+ platform_set_drvdata(dev, vio_devices); -+ -+ return 0; -+ -+fail: -+ vio_remove(dev); -+ return retval; -+} -+ -+static struct platform_device *vio_platform_device; -+ -+static struct platform_driver vio_driver = { -+ .probe = vio_probe, -+ .remove = vio_remove, -+ .driver = { -+ .name = "vio", -+ .owner = THIS_MODULE, -+ }, -+}; -+ -+static int __init vio_init(void) -+{ -+ int retval; -+ -+ vio_platform_device = platform_device_register_simple("vio", -1, NULL, 0); -+ if (IS_ERR(vio_platform_device)) { -+ printk(KERN_WARNING "vio: device registration failed\n"); -+ return PTR_ERR(vio_platform_device); -+ } -+ -+ retval = platform_driver_register(&vio_driver); -+ if (retval < 0) { -+ printk(KERN_WARNING "vio: driver registration failed\n"); -+ platform_device_unregister(vio_platform_device); -+ } -+ -+ return retval; -+} -+ -+static void __exit vio_exit(void) -+{ -+ platform_driver_unregister(&vio_driver); -+ platform_device_unregister(vio_platform_device); -+} -+ -+module_init(vio_init); -+module_exit(vio_exit); -+ -+MODULE_AUTHOR("Hamish Guthrie <hamish@prodigi.ch>"); -+MODULE_DESCRIPTION("FDL Versalink GPIO Driver"); -+MODULE_LICENSE("GPL"); |