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path: root/drivers/misc/hdpuftrs/hdpu_nexus.c
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Diffstat (limited to 'drivers/misc/hdpuftrs/hdpu_nexus.c')
-rw-r--r--drivers/misc/hdpuftrs/hdpu_nexus.c88
1 files changed, 67 insertions, 21 deletions
diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c
index 60c8b26f067..2887b214798 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)