diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/sparc/kernel/apc.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/sparc/kernel/apc.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/ANDROID_3.4.5/arch/sparc/kernel/apc.c b/ANDROID_3.4.5/arch/sparc/kernel/apc.c deleted file mode 100644 index 812e10bb..00000000 --- a/ANDROID_3.4.5/arch/sparc/kernel/apc.c +++ /dev/null @@ -1,195 +0,0 @@ -/* apc - Driver implementation for power management functions - * of Aurora Personality Chip (APC) on SPARCstation-4/5 and - * derivatives. - * - * Copyright (c) 2002 Eric Brower (ebrower@usa.net) - */ - -#include <linux/kernel.h> -#include <linux/fs.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/miscdevice.h> -#include <linux/pm.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/module.h> - -#include <asm/io.h> -#include <asm/oplib.h> -#include <asm/uaccess.h> -#include <asm/auxio.h> -#include <asm/apc.h> - -/* Debugging - * - * #define APC_DEBUG_LED - */ - -#define APC_MINOR MISC_DYNAMIC_MINOR -#define APC_OBPNAME "power-management" -#define APC_DEVNAME "apc" - -static u8 __iomem *regs; -static int apc_no_idle __devinitdata = 0; - -#define apc_readb(offs) (sbus_readb(regs+offs)) -#define apc_writeb(val, offs) (sbus_writeb(val, regs+offs)) - -/* Specify "apc=noidle" on the kernel command line to - * disable APC CPU standby support. Certain prototype - * systems (SPARCstation-Fox) do not play well with APC - * CPU idle, so disable this if your system has APC and - * crashes randomly. - */ -static int __init apc_setup(char *str) -{ - if(!strncmp(str, "noidle", strlen("noidle"))) { - apc_no_idle = 1; - return 1; - } - return 0; -} -__setup("apc=", apc_setup); - -/* - * CPU idle callback function - * See .../arch/sparc/kernel/process.c - */ -static void apc_swift_idle(void) -{ -#ifdef APC_DEBUG_LED - set_auxio(0x00, AUXIO_LED); -#endif - - apc_writeb(apc_readb(APC_IDLE_REG) | APC_IDLE_ON, APC_IDLE_REG); - -#ifdef APC_DEBUG_LED - set_auxio(AUXIO_LED, 0x00); -#endif -} - -static inline void apc_free(struct platform_device *op) -{ - of_iounmap(&op->resource[0], regs, resource_size(&op->resource[0])); -} - -static int apc_open(struct inode *inode, struct file *f) -{ - return 0; -} - -static int apc_release(struct inode *inode, struct file *f) -{ - return 0; -} - -static long apc_ioctl(struct file *f, unsigned int cmd, unsigned long __arg) -{ - __u8 inarg, __user *arg = (__u8 __user *) __arg; - - switch (cmd) { - case APCIOCGFANCTL: - if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg)) - return -EFAULT; - break; - - case APCIOCGCPWR: - if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg)) - return -EFAULT; - break; - - case APCIOCGBPORT: - if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg)) - return -EFAULT; - break; - - case APCIOCSFANCTL: - if (get_user(inarg, arg)) - return -EFAULT; - apc_writeb(inarg & APC_REGMASK, APC_FANCTL_REG); - break; - - case APCIOCSCPWR: - if (get_user(inarg, arg)) - return -EFAULT; - apc_writeb(inarg & APC_REGMASK, APC_CPOWER_REG); - break; - - case APCIOCSBPORT: - if (get_user(inarg, arg)) - return -EFAULT; - apc_writeb(inarg & APC_BPMASK, APC_BPORT_REG); - break; - - default: - return -EINVAL; - } - - return 0; -} - -static const struct file_operations apc_fops = { - .unlocked_ioctl = apc_ioctl, - .open = apc_open, - .release = apc_release, - .llseek = noop_llseek, -}; - -static struct miscdevice apc_miscdev = { APC_MINOR, APC_DEVNAME, &apc_fops }; - -static int __devinit apc_probe(struct platform_device *op) -{ - int err; - - regs = of_ioremap(&op->resource[0], 0, - resource_size(&op->resource[0]), APC_OBPNAME); - if (!regs) { - printk(KERN_ERR "%s: unable to map registers\n", APC_DEVNAME); - return -ENODEV; - } - - err = misc_register(&apc_miscdev); - if (err) { - printk(KERN_ERR "%s: unable to register device\n", APC_DEVNAME); - apc_free(op); - return -ENODEV; - } - - /* Assign power management IDLE handler */ - if (!apc_no_idle) - pm_idle = apc_swift_idle; - - printk(KERN_INFO "%s: power management initialized%s\n", - APC_DEVNAME, apc_no_idle ? " (CPU idle disabled)" : ""); - - return 0; -} - -static struct of_device_id apc_match[] = { - { - .name = APC_OBPNAME, - }, - {}, -}; -MODULE_DEVICE_TABLE(of, apc_match); - -static struct platform_driver apc_driver = { - .driver = { - .name = "apc", - .owner = THIS_MODULE, - .of_match_table = apc_match, - }, - .probe = apc_probe, -}; - -static int __init apc_init(void) -{ - return platform_driver_register(&apc_driver); -} - -/* This driver is not critical to the boot process - * and is easiest to ioremap when SBus is already - * initialized, so we install ourselves thusly: - */ -__initcall(apc_init); |