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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/misc/phantom.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/misc/phantom.c')
-rw-r--r--ANDROID_3.4.5/drivers/misc/phantom.c571
1 files changed, 0 insertions, 571 deletions
diff --git a/ANDROID_3.4.5/drivers/misc/phantom.c b/ANDROID_3.4.5/drivers/misc/phantom.c
deleted file mode 100644
index 21b28fc6..00000000
--- a/ANDROID_3.4.5/drivers/misc/phantom.c
+++ /dev/null
@@ -1,571 +0,0 @@
-/*
- * Copyright (C) 2005-2007 Jiri Slaby <jirislaby@gmail.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.
- *
- * You need a userspace library to cooperate with this driver. It (and other
- * info) may be obtained here:
- * http://www.fi.muni.cz/~xslaby/phantom.html
- * or alternatively, you might use OpenHaptics provided by Sensable.
- */
-
-#include <linux/compat.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/interrupt.h>
-#include <linux/cdev.h>
-#include <linux/slab.h>
-#include <linux/phantom.h>
-#include <linux/sched.h>
-#include <linux/mutex.h>
-
-#include <linux/atomic.h>
-#include <asm/io.h>
-
-#define PHANTOM_VERSION "n0.9.8"
-
-#define PHANTOM_MAX_MINORS 8
-
-#define PHN_IRQCTL 0x4c /* irq control in caddr space */
-
-#define PHB_RUNNING 1
-#define PHB_NOT_OH 2
-
-static DEFINE_MUTEX(phantom_mutex);
-static struct class *phantom_class;
-static int phantom_major;
-
-struct phantom_device {
- unsigned int opened;
- void __iomem *caddr;
- u32 __iomem *iaddr;
- u32 __iomem *oaddr;
- unsigned long status;
- atomic_t counter;
-
- wait_queue_head_t wait;
- struct cdev cdev;
-
- struct mutex open_lock;
- spinlock_t regs_lock;
-
- /* used in NOT_OH mode */
- struct phm_regs oregs;
- u32 ctl_reg;
-};
-
-static unsigned char phantom_devices[PHANTOM_MAX_MINORS];
-
-static int phantom_status(struct phantom_device *dev, unsigned long newstat)
-{
- pr_debug("phantom_status %lx %lx\n", dev->status, newstat);
-
- if (!(dev->status & PHB_RUNNING) && (newstat & PHB_RUNNING)) {
- atomic_set(&dev->counter, 0);
- iowrite32(PHN_CTL_IRQ, dev->iaddr + PHN_CONTROL);
- iowrite32(0x43, dev->caddr + PHN_IRQCTL);
- ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */
- } else if ((dev->status & PHB_RUNNING) && !(newstat & PHB_RUNNING)) {
- iowrite32(0, dev->caddr + PHN_IRQCTL);
- ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */
- }
-
- dev->status = newstat;
-
- return 0;
-}
-
-/*
- * File ops
- */
-
-static long phantom_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- struct phantom_device *dev = file->private_data;
- struct phm_regs rs;
- struct phm_reg r;
- void __user *argp = (void __user *)arg;
- unsigned long flags;
- unsigned int i;
-
- switch (cmd) {
- case PHN_SETREG:
- case PHN_SET_REG:
- if (copy_from_user(&r, argp, sizeof(r)))
- return -EFAULT;
-
- if (r.reg > 7)
- return -EINVAL;
-
- spin_lock_irqsave(&dev->regs_lock, flags);
- if (r.reg == PHN_CONTROL && (r.value & PHN_CTL_IRQ) &&
- phantom_status(dev, dev->status | PHB_RUNNING)){
- spin_unlock_irqrestore(&dev->regs_lock, flags);
- return -ENODEV;
- }
-
- pr_debug("phantom: writing %x to %u\n", r.value, r.reg);
-
- /* preserve amp bit (don't allow to change it when in NOT_OH) */
- if (r.reg == PHN_CONTROL && (dev->status & PHB_NOT_OH)) {
- r.value &= ~PHN_CTL_AMP;
- r.value |= dev->ctl_reg & PHN_CTL_AMP;
- dev->ctl_reg = r.value;
- }
-
- iowrite32(r.value, dev->iaddr + r.reg);
- ioread32(dev->iaddr); /* PCI posting */
-
- if (r.reg == PHN_CONTROL && !(r.value & PHN_CTL_IRQ))
- phantom_status(dev, dev->status & ~PHB_RUNNING);
- spin_unlock_irqrestore(&dev->regs_lock, flags);
- break;
- case PHN_SETREGS:
- case PHN_SET_REGS:
- if (copy_from_user(&rs, argp, sizeof(rs)))
- return -EFAULT;
-
- pr_debug("phantom: SRS %u regs %x\n", rs.count, rs.mask);
- spin_lock_irqsave(&dev->regs_lock, flags);
- if (dev->status & PHB_NOT_OH)
- memcpy(&dev->oregs, &rs, sizeof(rs));
- else {
- u32 m = min(rs.count, 8U);
- for (i = 0; i < m; i++)
- if (rs.mask & BIT(i))
- iowrite32(rs.values[i], dev->oaddr + i);
- ioread32(dev->iaddr); /* PCI posting */
- }
- spin_unlock_irqrestore(&dev->regs_lock, flags);
- break;
- case PHN_GETREG:
- case PHN_GET_REG:
- if (copy_from_user(&r, argp, sizeof(r)))
- return -EFAULT;
-
- if (r.reg > 7)
- return -EINVAL;
-
- r.value = ioread32(dev->iaddr + r.reg);
-
- if (copy_to_user(argp, &r, sizeof(r)))
- return -EFAULT;
- break;
- case PHN_GETREGS:
- case PHN_GET_REGS: {
- u32 m;
-
- if (copy_from_user(&rs, argp, sizeof(rs)))
- return -EFAULT;
-
- m = min(rs.count, 8U);
-
- pr_debug("phantom: GRS %u regs %x\n", rs.count, rs.mask);
- spin_lock_irqsave(&dev->regs_lock, flags);
- for (i = 0; i < m; i++)
- if (rs.mask & BIT(i))
- rs.values[i] = ioread32(dev->iaddr + i);
- atomic_set(&dev->counter, 0);
- spin_unlock_irqrestore(&dev->regs_lock, flags);
-
- if (copy_to_user(argp, &rs, sizeof(rs)))
- return -EFAULT;
- break;
- } case PHN_NOT_OH:
- spin_lock_irqsave(&dev->regs_lock, flags);
- if (dev->status & PHB_RUNNING) {
- printk(KERN_ERR "phantom: you need to set NOT_OH "
- "before you start the device!\n");
- spin_unlock_irqrestore(&dev->regs_lock, flags);
- return -EINVAL;
- }
- dev->status |= PHB_NOT_OH;
- spin_unlock_irqrestore(&dev->regs_lock, flags);
- break;
- default:
- return -ENOTTY;
- }
-
- return 0;
-}
-
-#ifdef CONFIG_COMPAT
-static long phantom_compat_ioctl(struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- if (_IOC_NR(cmd) <= 3 && _IOC_SIZE(cmd) == sizeof(compat_uptr_t)) {
- cmd &= ~(_IOC_SIZEMASK << _IOC_SIZESHIFT);
- cmd |= sizeof(void *) << _IOC_SIZESHIFT;
- }
- return phantom_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
-}
-#else
-#define phantom_compat_ioctl NULL
-#endif
-
-static int phantom_open(struct inode *inode, struct file *file)
-{
- struct phantom_device *dev = container_of(inode->i_cdev,
- struct phantom_device, cdev);
-
- mutex_lock(&phantom_mutex);
- nonseekable_open(inode, file);
-
- if (mutex_lock_interruptible(&dev->open_lock)) {
- mutex_unlock(&phantom_mutex);
- return -ERESTARTSYS;
- }
-
- if (dev->opened) {
- mutex_unlock(&dev->open_lock);
- mutex_unlock(&phantom_mutex);
- return -EINVAL;
- }
-
- WARN_ON(dev->status & PHB_NOT_OH);
-
- file->private_data = dev;
-
- atomic_set(&dev->counter, 0);
- dev->opened++;
- mutex_unlock(&dev->open_lock);
- mutex_unlock(&phantom_mutex);
- return 0;
-}
-
-static int phantom_release(struct inode *inode, struct file *file)
-{
- struct phantom_device *dev = file->private_data;
-
- mutex_lock(&dev->open_lock);
-
- dev->opened = 0;
- phantom_status(dev, dev->status & ~PHB_RUNNING);
- dev->status &= ~PHB_NOT_OH;
-
- mutex_unlock(&dev->open_lock);
-
- return 0;
-}
-
-static unsigned int phantom_poll(struct file *file, poll_table *wait)
-{
- struct phantom_device *dev = file->private_data;
- unsigned int mask = 0;
-
- pr_debug("phantom_poll: %d\n", atomic_read(&dev->counter));
- poll_wait(file, &dev->wait, wait);
-
- if (!(dev->status & PHB_RUNNING))
- mask = POLLERR;
- else if (atomic_read(&dev->counter))
- mask = POLLIN | POLLRDNORM;
-
- pr_debug("phantom_poll end: %x/%d\n", mask, atomic_read(&dev->counter));
-
- return mask;
-}
-
-static const struct file_operations phantom_file_ops = {
- .open = phantom_open,
- .release = phantom_release,
- .unlocked_ioctl = phantom_ioctl,
- .compat_ioctl = phantom_compat_ioctl,
- .poll = phantom_poll,
- .llseek = no_llseek,
-};
-
-static irqreturn_t phantom_isr(int irq, void *data)
-{
- struct phantom_device *dev = data;
- unsigned int i;
- u32 ctl;
-
- spin_lock(&dev->regs_lock);
- ctl = ioread32(dev->iaddr + PHN_CONTROL);
- if (!(ctl & PHN_CTL_IRQ)) {
- spin_unlock(&dev->regs_lock);
- return IRQ_NONE;
- }
-
- iowrite32(0, dev->iaddr);
- iowrite32(0xc0, dev->iaddr);
-
- if (dev->status & PHB_NOT_OH) {
- struct phm_regs *r = &dev->oregs;
- u32 m = min(r->count, 8U);
-
- for (i = 0; i < m; i++)
- if (r->mask & BIT(i))
- iowrite32(r->values[i], dev->oaddr + i);
-
- dev->ctl_reg ^= PHN_CTL_AMP;
- iowrite32(dev->ctl_reg, dev->iaddr + PHN_CONTROL);
- }
- spin_unlock(&dev->regs_lock);
-
- ioread32(dev->iaddr); /* PCI posting */
-
- atomic_inc(&dev->counter);
- wake_up_interruptible(&dev->wait);
-
- return IRQ_HANDLED;
-}
-
-/*
- * Init and deinit driver
- */
-
-static unsigned int __devinit phantom_get_free(void)
-{
- unsigned int i;
-
- for (i = 0; i < PHANTOM_MAX_MINORS; i++)
- if (phantom_devices[i] == 0)
- break;
-
- return i;
-}
-
-static int __devinit phantom_probe(struct pci_dev *pdev,
- const struct pci_device_id *pci_id)
-{
- struct phantom_device *pht;
- unsigned int minor;
- int retval;
-
- retval = pci_enable_device(pdev);
- if (retval) {
- dev_err(&pdev->dev, "pci_enable_device failed!\n");
- goto err;
- }
-
- minor = phantom_get_free();
- if (minor == PHANTOM_MAX_MINORS) {
- dev_err(&pdev->dev, "too many devices found!\n");
- retval = -EIO;
- goto err_dis;
- }
-
- phantom_devices[minor] = 1;
-
- retval = pci_request_regions(pdev, "phantom");
- if (retval) {
- dev_err(&pdev->dev, "pci_request_regions failed!\n");
- goto err_null;
- }
-
- retval = -ENOMEM;
- pht = kzalloc(sizeof(*pht), GFP_KERNEL);
- if (pht == NULL) {
- dev_err(&pdev->dev, "unable to allocate device\n");
- goto err_reg;
- }
-
- pht->caddr = pci_iomap(pdev, 0, 0);
- if (pht->caddr == NULL) {
- dev_err(&pdev->dev, "can't remap conf space\n");
- goto err_fr;
- }
- pht->iaddr = pci_iomap(pdev, 2, 0);
- if (pht->iaddr == NULL) {
- dev_err(&pdev->dev, "can't remap input space\n");
- goto err_unmc;
- }
- pht->oaddr = pci_iomap(pdev, 3, 0);
- if (pht->oaddr == NULL) {
- dev_err(&pdev->dev, "can't remap output space\n");
- goto err_unmi;
- }
-
- mutex_init(&pht->open_lock);
- spin_lock_init(&pht->regs_lock);
- init_waitqueue_head(&pht->wait);
- cdev_init(&pht->cdev, &phantom_file_ops);
- pht->cdev.owner = THIS_MODULE;
-
- iowrite32(0, pht->caddr + PHN_IRQCTL);
- ioread32(pht->caddr + PHN_IRQCTL); /* PCI posting */
- retval = request_irq(pdev->irq, phantom_isr,
- IRQF_SHARED | IRQF_DISABLED, "phantom", pht);
- if (retval) {
- dev_err(&pdev->dev, "can't establish ISR\n");
- goto err_unmo;
- }
-
- retval = cdev_add(&pht->cdev, MKDEV(phantom_major, minor), 1);
- if (retval) {
- dev_err(&pdev->dev, "chardev registration failed\n");
- goto err_irq;
- }
-
- if (IS_ERR(device_create(phantom_class, &pdev->dev,
- MKDEV(phantom_major, minor), NULL,
- "phantom%u", minor)))
- dev_err(&pdev->dev, "can't create device\n");
-
- pci_set_drvdata(pdev, pht);
-
- return 0;
-err_irq:
- free_irq(pdev->irq, pht);
-err_unmo:
- pci_iounmap(pdev, pht->oaddr);
-err_unmi:
- pci_iounmap(pdev, pht->iaddr);
-err_unmc:
- pci_iounmap(pdev, pht->caddr);
-err_fr:
- kfree(pht);
-err_reg:
- pci_release_regions(pdev);
-err_null:
- phantom_devices[minor] = 0;
-err_dis:
- pci_disable_device(pdev);
-err:
- return retval;
-}
-
-static void __devexit phantom_remove(struct pci_dev *pdev)
-{
- struct phantom_device *pht = pci_get_drvdata(pdev);
- unsigned int minor = MINOR(pht->cdev.dev);
-
- device_destroy(phantom_class, MKDEV(phantom_major, minor));
-
- cdev_del(&pht->cdev);
-
- iowrite32(0, pht->caddr + PHN_IRQCTL);
- ioread32(pht->caddr + PHN_IRQCTL); /* PCI posting */
- free_irq(pdev->irq, pht);
-
- pci_iounmap(pdev, pht->oaddr);
- pci_iounmap(pdev, pht->iaddr);
- pci_iounmap(pdev, pht->caddr);
-
- kfree(pht);
-
- pci_release_regions(pdev);
-
- phantom_devices[minor] = 0;
-
- pci_disable_device(pdev);
-}
-
-#ifdef CONFIG_PM
-static int phantom_suspend(struct pci_dev *pdev, pm_message_t state)
-{
- struct phantom_device *dev = pci_get_drvdata(pdev);
-
- iowrite32(0, dev->caddr + PHN_IRQCTL);
- ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */
-
- synchronize_irq(pdev->irq);
-
- return 0;
-}
-
-static int phantom_resume(struct pci_dev *pdev)
-{
- struct phantom_device *dev = pci_get_drvdata(pdev);
-
- iowrite32(0, dev->caddr + PHN_IRQCTL);
-
- return 0;
-}
-#else
-#define phantom_suspend NULL
-#define phantom_resume NULL
-#endif
-
-static struct pci_device_id phantom_pci_tbl[] __devinitdata = {
- { .vendor = PCI_VENDOR_ID_PLX, .device = PCI_DEVICE_ID_PLX_9050,
- .subvendor = PCI_VENDOR_ID_PLX, .subdevice = PCI_DEVICE_ID_PLX_9050,
- .class = PCI_CLASS_BRIDGE_OTHER << 8, .class_mask = 0xffff00 },
- { 0, }
-};
-MODULE_DEVICE_TABLE(pci, phantom_pci_tbl);
-
-static struct pci_driver phantom_pci_driver = {
- .name = "phantom",
- .id_table = phantom_pci_tbl,
- .probe = phantom_probe,
- .remove = __devexit_p(phantom_remove),
- .suspend = phantom_suspend,
- .resume = phantom_resume
-};
-
-static CLASS_ATTR_STRING(version, 0444, PHANTOM_VERSION);
-
-static int __init phantom_init(void)
-{
- int retval;
- dev_t dev;
-
- phantom_class = class_create(THIS_MODULE, "phantom");
- if (IS_ERR(phantom_class)) {
- retval = PTR_ERR(phantom_class);
- printk(KERN_ERR "phantom: can't register phantom class\n");
- goto err;
- }
- retval = class_create_file(phantom_class, &class_attr_version.attr);
- if (retval) {
- printk(KERN_ERR "phantom: can't create sysfs version file\n");
- goto err_class;
- }
-
- retval = alloc_chrdev_region(&dev, 0, PHANTOM_MAX_MINORS, "phantom");
- if (retval) {
- printk(KERN_ERR "phantom: can't register character device\n");
- goto err_attr;
- }
- phantom_major = MAJOR(dev);
-
- retval = pci_register_driver(&phantom_pci_driver);
- if (retval) {
- printk(KERN_ERR "phantom: can't register pci driver\n");
- goto err_unchr;
- }
-
- printk(KERN_INFO "Phantom Linux Driver, version " PHANTOM_VERSION ", "
- "init OK\n");
-
- return 0;
-err_unchr:
- unregister_chrdev_region(dev, PHANTOM_MAX_MINORS);
-err_attr:
- class_remove_file(phantom_class, &class_attr_version.attr);
-err_class:
- class_destroy(phantom_class);
-err:
- return retval;
-}
-
-static void __exit phantom_exit(void)
-{
- pci_unregister_driver(&phantom_pci_driver);
-
- unregister_chrdev_region(MKDEV(phantom_major, 0), PHANTOM_MAX_MINORS);
-
- class_remove_file(phantom_class, &class_attr_version.attr);
- class_destroy(phantom_class);
-
- pr_debug("phantom: module successfully removed\n");
-}
-
-module_init(phantom_init);
-module_exit(phantom_exit);
-
-MODULE_AUTHOR("Jiri Slaby <jirislaby@gmail.com>");
-MODULE_DESCRIPTION("Sensable Phantom driver (PCI devices)");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(PHANTOM_VERSION);