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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/misc/phantom.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
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.c | 571 |
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); |