Remove unused HDPU driver
This driver seems to be specific to a "Sky CPU" board for which we don't appear to have upstream support (or not any more). No Kconfig file in the kernel ever enables it. So remove it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt
parent
0fdf86754f
commit
a244b25217
|
|
@ -3,7 +3,6 @@
|
|||
#
|
||||
|
||||
obj-$(CONFIG_IBM_ASM) += ibmasm/
|
||||
obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/
|
||||
obj-$(CONFIG_AD525X_DPOT) += ad525x_dpot.o
|
||||
obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
|
||||
obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
|
||||
|
|
|
|||
|
|
@ -1 +0,0 @@
|
|||
obj-$(CONFIG_HDPU_FEATURES) := hdpu_cpustate.o hdpu_nexus.o
|
||||
|
|
@ -1,256 +0,0 @@
|
|||
/*
|
||||
* Sky CPU State Driver
|
||||
*
|
||||
* Copyright (C) 2002 Brian Waite
|
||||
*
|
||||
* This driver allows use of the CPU state bits
|
||||
* It exports the /dev/sky_cpustate and also
|
||||
* /proc/sky_cpustate pseudo-file for status information.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/smp_lock.h>
|
||||
#include <linux/miscdevice.h>
|
||||
#include <linux/proc_fs.h>
|
||||
#include <linux/hdpu_features.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
#define SKY_CPUSTATE_VERSION "1.1"
|
||||
|
||||
static int hdpu_cpustate_probe(struct platform_device *pdev);
|
||||
static int hdpu_cpustate_remove(struct platform_device *pdev);
|
||||
|
||||
static unsigned char cpustate_get_state(void);
|
||||
static int cpustate_proc_open(struct inode *inode, struct file *file);
|
||||
static int cpustate_proc_read(struct seq_file *seq, void *offset);
|
||||
|
||||
static struct cpustate_t cpustate;
|
||||
|
||||
static const struct file_operations proc_cpustate = {
|
||||
.open = cpustate_proc_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = single_release,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int cpustate_proc_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, cpustate_proc_read, NULL);
|
||||
}
|
||||
|
||||
static int cpustate_proc_read(struct seq_file *seq, void *offset)
|
||||
{
|
||||
seq_printf(seq, "CPU State: %04x\n", cpustate_get_state());
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cpustate_get_ref(int excl)
|
||||
{
|
||||
|
||||
int retval = -EBUSY;
|
||||
|
||||
spin_lock(&cpustate.lock);
|
||||
|
||||
if (cpustate.excl)
|
||||
goto out_busy;
|
||||
|
||||
if (excl) {
|
||||
if (cpustate.open_count)
|
||||
goto out_busy;
|
||||
cpustate.excl = 1;
|
||||
}
|
||||
|
||||
cpustate.open_count++;
|
||||
retval = 0;
|
||||
|
||||
out_busy:
|
||||
spin_unlock(&cpustate.lock);
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int cpustate_free_ref(void)
|
||||
{
|
||||
|
||||
spin_lock(&cpustate.lock);
|
||||
|
||||
cpustate.excl = 0;
|
||||
cpustate.open_count--;
|
||||
|
||||
spin_unlock(&cpustate.lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static unsigned char cpustate_get_state(void)
|
||||
{
|
||||
|
||||
return cpustate.cached_val;
|
||||
}
|
||||
|
||||
static void cpustate_set_state(unsigned char new_state)
|
||||
{
|
||||
unsigned int state = (new_state << 21);
|
||||
|
||||
#ifdef DEBUG_CPUSTATE
|
||||
printk("CPUSTATE -> 0x%x\n", new_state);
|
||||
#endif
|
||||
spin_lock(&cpustate.lock);
|
||||
cpustate.cached_val = new_state;
|
||||
writel((0xff << 21), cpustate.clr_addr);
|
||||
writel(state, cpustate.set_addr);
|
||||
spin_unlock(&cpustate.lock);
|
||||
}
|
||||
|
||||
/*
|
||||
* Now all the various file operations that we export.
|
||||
*/
|
||||
|
||||
static ssize_t cpustate_read(struct file *file, char *buf,
|
||||
size_t count, loff_t * ppos)
|
||||
{
|
||||
unsigned char data;
|
||||
|
||||
if (count < 0)
|
||||
return -EFAULT;
|
||||
if (count == 0)
|
||||
return 0;
|
||||
|
||||
data = cpustate_get_state();
|
||||
if (copy_to_user(buf, &data, sizeof(unsigned char)))
|
||||
return -EFAULT;
|
||||
return sizeof(unsigned char);
|
||||
}
|
||||
|
||||
static ssize_t cpustate_write(struct file *file, const char *buf,
|
||||
size_t count, loff_t * ppos)
|
||||
{
|
||||
unsigned char data;
|
||||
|
||||
if (count < 0)
|
||||
return -EFAULT;
|
||||
|
||||
if (count == 0)
|
||||
return 0;
|
||||
|
||||
if (copy_from_user((unsigned char *)&data, buf, sizeof(unsigned char)))
|
||||
return -EFAULT;
|
||||
|
||||
cpustate_set_state(data);
|
||||
return sizeof(unsigned char);
|
||||
}
|
||||
|
||||
static int cpustate_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
int ret;
|
||||
|
||||
lock_kernel();
|
||||
ret = cpustate_get_ref((file->f_flags & O_EXCL));
|
||||
unlock_kernel();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int cpustate_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
return cpustate_free_ref();
|
||||
}
|
||||
|
||||
static struct platform_driver hdpu_cpustate_driver = {
|
||||
.probe = hdpu_cpustate_probe,
|
||||
.remove = hdpu_cpustate_remove,
|
||||
.driver = {
|
||||
.name = HDPU_CPUSTATE_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
/*
|
||||
* The various file operations we support.
|
||||
*/
|
||||
static const struct file_operations cpustate_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = cpustate_open,
|
||||
.release = cpustate_release,
|
||||
.read = cpustate_read,
|
||||
.write = cpustate_write,
|
||||
.llseek = no_llseek,
|
||||
};
|
||||
|
||||
static struct miscdevice cpustate_dev = {
|
||||
.minor = MISC_DYNAMIC_MINOR,
|
||||
.name = "sky_cpustate",
|
||||
.fops = &cpustate_fops,
|
||||
};
|
||||
|
||||
static int hdpu_cpustate_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res;
|
||||
struct proc_dir_entry *proc_de;
|
||||
int ret;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res) {
|
||||
printk(KERN_ERR "sky_cpustate: "
|
||||
"Invalid memory resource.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
cpustate.set_addr = (unsigned long *)res->start;
|
||||
cpustate.clr_addr = (unsigned long *)res->end - 1;
|
||||
|
||||
ret = misc_register(&cpustate_dev);
|
||||
if (ret) {
|
||||
printk(KERN_WARNING "sky_cpustate: "
|
||||
"Unable to register misc device.\n");
|
||||
cpustate.set_addr = NULL;
|
||||
cpustate.clr_addr = NULL;
|
||||
return ret;
|
||||
}
|
||||
|
||||
proc_de = proc_create("sky_cpustate", 0666, NULL, &proc_cpustate);
|
||||
if (!proc_de) {
|
||||
printk(KERN_WARNING "sky_cpustate: "
|
||||
"Unable to create proc entry\n");
|
||||
}
|
||||
|
||||
printk(KERN_INFO "Sky CPU State Driver v" SKY_CPUSTATE_VERSION "\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hdpu_cpustate_remove(struct platform_device *pdev)
|
||||
{
|
||||
cpustate.set_addr = NULL;
|
||||
cpustate.clr_addr = NULL;
|
||||
|
||||
remove_proc_entry("sky_cpustate", NULL);
|
||||
misc_deregister(&cpustate_dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init cpustate_init(void)
|
||||
{
|
||||
return platform_driver_register(&hdpu_cpustate_driver);
|
||||
}
|
||||
|
||||
static void __exit cpustate_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&hdpu_cpustate_driver);
|
||||
}
|
||||
|
||||
module_init(cpustate_init);
|
||||
module_exit(cpustate_exit);
|
||||
|
||||
MODULE_AUTHOR("Brian Waite");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:" HDPU_CPUSTATE_NAME);
|
||||
|
|
@ -1,149 +0,0 @@
|
|||
/*
|
||||
* Sky Nexus Register Driver
|
||||
*
|
||||
* Copyright (C) 2002 Brian Waite
|
||||
*
|
||||
* This driver allows reading the Nexus register
|
||||
* It exports the /proc/sky_chassis_id and also
|
||||
* /proc/sky_slot_id pseudo-file for status information.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/proc_fs.h>
|
||||
#include <linux/hdpu_features.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
static int hdpu_nexus_probe(struct platform_device *pdev);
|
||||
static int hdpu_nexus_remove(struct platform_device *pdev);
|
||||
static int hdpu_slot_id_open(struct inode *inode, struct file *file);
|
||||
static int hdpu_slot_id_read(struct seq_file *seq, void *offset);
|
||||
static int hdpu_chassis_id_open(struct inode *inode, struct file *file);
|
||||
static int hdpu_chassis_id_read(struct seq_file *seq, void *offset);
|
||||
|
||||
static struct proc_dir_entry *hdpu_slot_id;
|
||||
static struct proc_dir_entry *hdpu_chassis_id;
|
||||
static int slot_id = -1;
|
||||
static int chassis_id = -1;
|
||||
|
||||
static const struct file_operations proc_slot_id = {
|
||||
.open = hdpu_slot_id_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = single_release,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static const struct file_operations proc_chassis_id = {
|
||||
.open = hdpu_chassis_id_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = single_release,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static struct platform_driver hdpu_nexus_driver = {
|
||||
.probe = hdpu_nexus_probe,
|
||||
.remove = hdpu_nexus_remove,
|
||||
.driver = {
|
||||
.name = HDPU_NEXUS_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
static int hdpu_slot_id_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, hdpu_slot_id_read, NULL);
|
||||
}
|
||||
|
||||
static int hdpu_slot_id_read(struct seq_file *seq, void *offset)
|
||||
{
|
||||
seq_printf(seq, "%d\n", slot_id);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hdpu_chassis_id_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, hdpu_chassis_id_read, NULL);
|
||||
}
|
||||
|
||||
static int hdpu_chassis_id_read(struct seq_file *seq, void *offset)
|
||||
{
|
||||
seq_printf(seq, "%d\n", chassis_id);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hdpu_nexus_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *res;
|
||||
int *nexus_id_addr;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res) {
|
||||
printk(KERN_ERR "sky_nexus: "
|
||||
"Invalid memory resource.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
nexus_id_addr = ioremap(res->start,
|
||||
(unsigned long)(res->end - res->start));
|
||||
if (nexus_id_addr) {
|
||||
slot_id = (*nexus_id_addr >> 8) & 0x1f;
|
||||
chassis_id = *nexus_id_addr & 0xff;
|
||||
iounmap(nexus_id_addr);
|
||||
} else {
|
||||
printk(KERN_ERR "sky_nexus: Could not map slot id\n");
|
||||
}
|
||||
|
||||
hdpu_slot_id = proc_create("sky_slot_id", 0666, NULL, &proc_slot_id);
|
||||
if (!hdpu_slot_id) {
|
||||
printk(KERN_WARNING "sky_nexus: "
|
||||
"Unable to create proc dir entry: sky_slot_id\n");
|
||||
}
|
||||
|
||||
hdpu_chassis_id = proc_create("sky_chassis_id", 0666, NULL,
|
||||
&proc_chassis_id);
|
||||
if (!hdpu_chassis_id)
|
||||
printk(KERN_WARNING "sky_nexus: "
|
||||
"Unable to create proc dir entry: sky_chassis_id\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hdpu_nexus_remove(struct platform_device *pdev)
|
||||
{
|
||||
slot_id = -1;
|
||||
chassis_id = -1;
|
||||
|
||||
remove_proc_entry("sky_slot_id", NULL);
|
||||
remove_proc_entry("sky_chassis_id", NULL);
|
||||
|
||||
hdpu_slot_id = 0;
|
||||
hdpu_chassis_id = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init nexus_init(void)
|
||||
{
|
||||
return platform_driver_register(&hdpu_nexus_driver);
|
||||
}
|
||||
|
||||
static void __exit nexus_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&hdpu_nexus_driver);
|
||||
}
|
||||
|
||||
module_init(nexus_init);
|
||||
module_exit(nexus_exit);
|
||||
|
||||
MODULE_AUTHOR("Brian Waite");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:" HDPU_NEXUS_NAME);
|
||||
|
|
@ -1,26 +0,0 @@
|
|||
#include <linux/spinlock.h>
|
||||
|
||||
struct cpustate_t {
|
||||
spinlock_t lock;
|
||||
int excl;
|
||||
int open_count;
|
||||
unsigned char cached_val;
|
||||
int inited;
|
||||
unsigned long *set_addr;
|
||||
unsigned long *clr_addr;
|
||||
};
|
||||
|
||||
|
||||
#define HDPU_CPUSTATE_NAME "hdpu cpustate"
|
||||
#define HDPU_NEXUS_NAME "hdpu nexus"
|
||||
|
||||
#define CPUSTATE_KERNEL_MAJOR 0x10
|
||||
|
||||
#define CPUSTATE_KERNEL_INIT_DRV 0 /* CPU State Driver Initialized */
|
||||
#define CPUSTATE_KERNEL_INIT_PCI 1 /* 64360 PCI Busses Init */
|
||||
#define CPUSTATE_KERNEL_INIT_REG 2 /* 64360 Bridge Init */
|
||||
#define CPUSTATE_KERNEL_CPU1_KICK 3 /* Boot cpu 1 */
|
||||
#define CPUSTATE_KERNEL_CPU1_OK 4 /* Cpu 1 has checked in */
|
||||
#define CPUSTATE_KERNEL_OK 5 /* Terminal state */
|
||||
#define CPUSTATE_KERNEL_RESET 14 /* Board reset via SW*/
|
||||
#define CPUSTATE_KERNEL_HALT 15 /* Board halted via SW*/
|
||||
Loading…
Reference in a new issue