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[POWERPC] Sky Cpu and Nexus: use seq_file/single_open on proc interface

Browse source 
This patch changes proc interface to be used with single_file/seq_open
calls.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Cyrill Gorcunov 2007-10-02 13:30:09 -07:00 committed by Paul Mackerras
parent 8b70da1a09
commit 3049ea7e04
2 changed files with 75 additions and 45 deletions
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66
drivers/misc/hdpuftrs/hdpu_cpustate.c
View file

@ -19,9 +19,10 @@
#include <linux/spinlock.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/hdpu_features.h>
#include <linux/seq_file.h>
#include <asm/io.h>
#define SKY_CPUSTATE_VERSION "1.1"
@ -29,7 +30,30 @@
static int hdpu_cpustate_probe(struct platform_device *pdev);
static int hdpu_cpustate_remove(struct platform_device *pdev);
struct cpustate_t cpustate;
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)
{
@ -67,13 +91,13 @@ static int cpustate_free_ref(void)
return 0;
}
unsigned char cpustate_get_state(void)
static unsigned char cpustate_get_state(void)
{
return cpustate.cached_val;
}
void cpustate_set_state(unsigned char new_state)
static void cpustate_set_state(unsigned char new_state)
{
unsigned int state = (new_state << 21);
@ -135,29 +159,6 @@ static int cpustate_release(struct inode *inode, struct file *file)
return cpustate_free_ref();
}
/*
* Info exported via "/proc/sky_cpustate".
*/
static int cpustate_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
char *p = page;
int len = 0;
p += sprintf(p, "CPU State: %04x\n", cpustate_get_state());
len = p - page;
if (len <= off + count)
*eof = 1;
*start = page + off;
len -= off;
if (len > count)
len = count;
if (len < 0)
len = 0;
return len;
}
static struct platform_driver hdpu_cpustate_driver = {
.probe = hdpu_cpustate_probe,
.remove = hdpu_cpustate_remove,
@ -208,11 +209,14 @@ static int hdpu_cpustate_probe(struct platform_device *pdev)
return ret;
}
proc_de = create_proc_read_entry("sky_cpustate", 0, 0,
cpustate_read_proc, NULL);
if (proc_de == NULL)
proc_de = create_proc_entry("sky_cpustate", 0666, &proc_root);
if (!proc_de) {
printk(KERN_WARNING "sky_cpustate: "
"Unable to create proc dir entry\n");
"Unable to create proc entry\n");
} else {
proc_de->proc_fops = &proc_cpustate;
proc_de->owner = THIS_MODULE;
}
printk(KERN_INFO "Sky CPU State Driver v" SKY_CPUSTATE_VERSION "\n");
return 0;

54
drivers/misc/hdpuftrs/hdpu_nexus.c
View file

@ -18,18 +18,38 @@
#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,
@ -38,22 +58,26 @@ static struct platform_driver hdpu_nexus_driver = {
},
};
int hdpu_slot_id_read(char *buffer, char **buffer_location, off_t offset,
int buffer_length, int *zero, void *ptr)
static int hdpu_slot_id_open(struct inode *inode, struct file *file)
{
if (offset > 0)
return 0;
return sprintf(buffer, "%d\n", slot_id);
return single_open(file, hdpu_slot_id_read, NULL);
}
int hdpu_chassis_id_read(char *buffer, char **buffer_location, off_t offset,
int buffer_length, int *zero, void *ptr)
static int hdpu_slot_id_read(struct seq_file *seq, void *offset)
{
if (offset > 0)
return 0;
seq_printf(seq, "%d\n", slot_id);
return 0;
}
return sprintf(buffer, "%d\n", chassis_id);
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)
@ -82,7 +106,8 @@ static int hdpu_nexus_probe(struct platform_device *pdev)
printk(KERN_WARNING "sky_nexus: "
"Unable to create proc dir entry: sky_slot_id\n");
} else {
hdpu_slot_id->read_proc = hdpu_slot_id_read;
hdpu_slot_id->proc_fops = &proc_slot_id;
hdpu_slot_id->owner = THIS_MODULE;
}
hdpu_chassis_id = create_proc_entry("sky_chassis_id", 0666, &proc_root);
@ -90,7 +115,8 @@ static int hdpu_nexus_probe(struct platform_device *pdev)
printk(KERN_WARNING "sky_nexus: "
"Unable to create proc dir entry: sky_chassis_id\n");
} else {
hdpu_chassis_id->read_proc = hdpu_chassis_id_read;
hdpu_chassis_id->proc_fops = &proc_chassis_id;
hdpu_chassis_id->owner = THIS_MODULE;
}
return 0;