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-rw-r--r--drivers/misc/hdpuftrs/hdpu_cpustate.c107
-rw-r--r--drivers/misc/hdpuftrs/hdpu_nexus.c88
2 files changed, 122 insertions, 73 deletions
diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c
index 276ba3c5143f..aa8ce7abe922 100644
--- a/drivers/misc/hdpuftrs/hdpu_cpustate.c
+++ b/drivers/misc/hdpuftrs/hdpu_cpustate.c
@@ -19,16 +19,41 @@
#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"
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)
{
@@ -66,13 +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);
@@ -134,29 +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,
@@ -169,22 +171,18 @@ static struct platform_driver hdpu_cpustate_driver = {
* 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,
- fasync:NULL,
- poll:NULL,
- ioctl:NULL,
- llseek:no_llseek,
-
+ .owner = THIS_MODULE,
+ .open = cpustate_open,
+ .release = cpustate_release,
+ .read = cpustate_read,
+ .write = cpustate_write,
+ .llseek = no_llseek,
};
static struct miscdevice cpustate_dev = {
- MISC_DYNAMIC_MINOR,
- "sky_cpustate",
- &cpustate_fops
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "sky_cpustate",
+ .fops = &cpustate_fops,
};
static int hdpu_cpustate_probe(struct platform_device *pdev)
@@ -194,23 +192,31 @@ static int hdpu_cpustate_probe(struct platform_device *pdev)
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");
+ printk(KERN_WARNING "sky_cpustate: "
+ "Unable to register misc device.\n");
cpustate.set_addr = NULL;
cpustate.clr_addr = NULL;
return ret;
}
- proc_de = create_proc_read_entry("sky_cpustate", 0, 0,
- cpustate_read_proc, NULL);
- if (proc_de == NULL)
- printk(KERN_WARNING "sky_cpustate: Unable to create proc "
- "dir entry\n");
+ proc_de = create_proc_entry("sky_cpustate", 0666, &proc_root);
+ if (!proc_de) {
+ printk(KERN_WARNING "sky_cpustate: "
+ "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;
@@ -218,21 +224,18 @@ static int hdpu_cpustate_probe(struct platform_device *pdev)
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;
+ return 0;
}
static int __init cpustate_init(void)
{
- int rc;
- rc = platform_driver_register(&hdpu_cpustate_driver);
- return rc;
+ return platform_driver_register(&hdpu_cpustate_driver);
}
static void __exit cpustate_exit(void)
diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c
index 60c8b26f0678..2887b2147980 100644
--- a/drivers/misc/hdpuftrs/hdpu_nexus.c
+++ b/drivers/misc/hdpuftrs/hdpu_nexus.c
@@ -18,17 +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,
@@ -37,43 +58,67 @@ 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)
{
+ return single_open(file, hdpu_slot_id_read, NULL);
+}
- if (offset > 0)
- return 0;
- return sprintf(buffer, "%d\n", slot_id);
+static int hdpu_slot_id_read(struct seq_file *seq, void *offset)
+{
+ seq_printf(seq, "%d\n", slot_id);
+ return 0;
}
-int hdpu_chassis_id_read(char *buffer, char **buffer_location, off_t offset,
- int buffer_length, int *zero, void *ptr)
+static int hdpu_chassis_id_open(struct inode *inode, struct file *file)
{
+ return single_open(file, hdpu_chassis_id_read, NULL);
+}
- if (offset > 0)
- return 0;
- return sprintf(buffer, "%d\n", chassis_id);
+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);
- int *nexus_id_addr;
- nexus_id_addr =
- ioremap(res->start, (unsigned long)(res->end - res->start));
+ 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("Could not map slot id\n");
+ } else {
+ printk(KERN_ERR "sky_nexus: Could not map slot id\n");
+ }
+
hdpu_slot_id = create_proc_entry("sky_slot_id", 0666, &proc_root);
- hdpu_slot_id->read_proc = hdpu_slot_id_read;
+ if (!hdpu_slot_id) {
+ printk(KERN_WARNING "sky_nexus: "
+ "Unable to create proc dir entry: sky_slot_id\n");
+ } else {
+ 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);
- hdpu_chassis_id->read_proc = hdpu_chassis_id_read;
+ if (!hdpu_chassis_id) {
+ printk(KERN_WARNING "sky_nexus: "
+ "Unable to create proc dir entry: sky_chassis_id\n");
+ } else {
+ hdpu_chassis_id->proc_fops = &proc_chassis_id;
+ hdpu_chassis_id->owner = THIS_MODULE;
+ }
+
return 0;
}
@@ -81,18 +126,19 @@ static int hdpu_nexus_remove(struct platform_device *pdev)
{
slot_id = -1;
chassis_id = -1;
+
remove_proc_entry("sky_slot_id", &proc_root);
remove_proc_entry("sky_chassis_id", &proc_root);
+
hdpu_slot_id = 0;
hdpu_chassis_id = 0;
+
return 0;
}
static int __init nexus_init(void)
{
- int rc;
- rc = platform_driver_register(&hdpu_nexus_driver);
- return rc;
+ return platform_driver_register(&hdpu_nexus_driver);
}
static void __exit nexus_exit(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 21:00:35 +0000