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Subject[PATCH 1/8] staging: ft1000: Convert char device to debugfs.
Date
Character device was used only for debugging purposes.
Convert it to debugfs functionality. For every plugged device
create new directory with one file.

Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
---
drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c | 68 +++++++++++++++------
drivers/staging/ft1000/ft1000-usb/ft1000_hw.c | 1 +
drivers/staging/ft1000/ft1000-usb/ft1000_usb.h | 8 +++
3 files changed, 57 insertions(+), 20 deletions(-)

diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c b/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
index 1aec926..1238b77 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c
@@ -37,7 +37,7 @@
#include <linux/kmod.h>
#include <linux/ioctl.h>
#include <linux/unistd.h>
-
+#include <linux/debugfs.h>
#include "ft1000_usb.h"
//#include "ft1000_ioctl.h"

@@ -156,9 +156,11 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
struct ft1000_info *info = netdev_priv(dev->net);
int result;
int i;
+ struct dentry *dir, *file;
+ struct ft1000_debug_dirs *tmp;

// make a new device name
- sprintf(info->DeviceName, "%s%d", "FT100", info->CardNumber);
+ sprintf(info->DeviceName, "%s%d", "FT1000_", info->CardNumber);

DEBUG("ft1000_CreateDevice: number of instance = %d\n", ft1000_flarion_cnt);
DEBUG("DeviceCreated = %x\n", info->DeviceCreated);
@@ -179,21 +181,31 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
DEBUG("ft1000_CreateDevice: \"%s\" device registration\n", info->DeviceName);
info->DeviceMajor = 0;

- result = register_chrdev(info->DeviceMajor, info->DeviceName, &ft1000fops);
- if (result < 0)
- {
- DEBUG("ft1000_CreateDevice: unable to get major %d\n", info->DeviceMajor);
- return result;
- }
+ tmp = kmalloc(sizeof(struct ft1000_debug_dirs), GFP_KERNEL);
+ if (tmp == NULL) {
+ result = -1;
+ goto fail;
+ }

- DEBUG("ft1000_CreateDevice: registered char device \"%s\"\n", info->DeviceName);
+ dir = debugfs_create_dir(info->DeviceName, 0);
+ if (IS_ERR(dir)) {
+ result = PTR_ERR(dir);
+ goto debug_dir_fail;
+ }

- // save a dynamic device major number
- if (info->DeviceMajor == 0)
- {
- info->DeviceMajor = result;
- DEBUG("ft1000_PcdCreateDevice: device major = %d\n", info->DeviceMajor);
- }
+ file = debugfs_create_file("device", S_IRUGO | S_IWUGO, dir,
+ NULL, &ft1000fops);
+ if (IS_ERR(file)) {
+ result = PTR_ERR(file);
+ goto debug_file_fail;
+ }
+
+ tmp->dent = dir;
+ tmp->file = file;
+ tmp->int_number = info->CardNumber;
+ list_add(&(tmp->list), &(info->nodes.list));
+
+ DEBUG("ft1000_CreateDevice: registered char device \"%s\"\n", info->DeviceName);

// initialize application information

@@ -243,7 +255,14 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
info->DeviceCreated = TRUE;
ft1000_flarion_cnt++;

- return result;
+ return 0;
+
+debug_file_fail:
+ debugfs_remove(dir);
+debug_dir_fail:
+ kfree(tmp);
+fail:
+ return result;
}

//---------------------------------------------------------------------------
@@ -259,10 +278,11 @@ int ft1000_CreateDevice(struct ft1000_device *dev)
void ft1000_DestroyDevice(struct net_device *dev)
{
struct ft1000_info *info = netdev_priv(dev);
- int result = 0;
int i;
struct dpram_blk *pdpram_blk;
struct dpram_blk *ptr;
+ struct list_head *pos, *q;
+ struct ft1000_debug_dirs *dir;

DEBUG("ft1000_chdev:ft1000_DestroyDevice called\n");

@@ -271,9 +291,17 @@ void ft1000_DestroyDevice(struct net_device *dev)
if (info->DeviceCreated)
{
ft1000_flarion_cnt--;
- unregister_chrdev(info->DeviceMajor, info->DeviceName);
- DEBUG("ft1000_DestroyDevice: unregistered device \"%s\", result = %d\n",
- info->DeviceName, result);
+ list_for_each_safe(pos, q, &info->nodes.list) {
+ dir = list_entry(pos, struct ft1000_debug_dirs, list);
+ if (dir->int_number == info->CardNumber) {
+ debugfs_remove(dir->file);
+ debugfs_remove(dir->dent);
+ list_del(pos);
+ kfree(dir);
+ }
+ }
+ DEBUG("ft1000_DestroyDevice: unregistered device \"%s\"\n",
+ info->DeviceName);

// Make sure we free any memory reserve for slow Queue
for (i=0; i<MAX_NUM_APP; i++) {
diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
index 1ca01e2..22536da 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_hw.c
@@ -851,6 +851,7 @@ u16 init_ft1000_netdev(struct ft1000_device *ft1000dev)

INIT_LIST_HEAD(&pInfo->prov_list);

+ INIT_LIST_HEAD(&pInfo->nodes.list);
//mbelian
#ifdef HAVE_NET_DEVICE_OPS
netdev->netdev_ops = &ftnet_ops;
diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
index a07db26..5bead63 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_usb.h
@@ -473,6 +473,13 @@ struct ft1000_device
// struct net_device_stats stats; //mbelian
} __attribute__ ((packed));

+struct ft1000_debug_dirs {
+ struct list_head list;
+ struct dentry *dent;
+ struct dentry *file;
+ int int_number;
+};
+
struct ft1000_info {
struct ft1000_device *pFt1000Dev;
struct net_device_stats stats;
@@ -508,6 +515,7 @@ struct ft1000_info {
u8 CardNumber;
u8 DeviceName[15];
int DeviceMajor;
+ struct ft1000_debug_dirs nodes;
int registered;
int mediastate;
int dhcpflg;
--
1.7.1


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