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kernel-fxtec-pro1x/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
Kay Sievers af128a102c V4L/DVB (9521): V4L: struct device - replace bus_id with dev_name(), dev_set_name() 
This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".

To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.

We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.

We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.

Thanks,
Kay

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29 17:53:26 -02:00

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/*
*
*
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
*
* 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
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/string.h>
#include <linux/slab.h>
#include "pvrusb2-sysfs.h"
#include "pvrusb2-hdw.h"
#include "pvrusb2-debug.h"
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
#include "pvrusb2-debugifc.h"
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
#define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
struct pvr2_sysfs {
struct pvr2_channel channel;
struct device *class_dev;
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
struct pvr2_sysfs_debugifc *debugifc;
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
struct pvr2_sysfs_ctl_item *item_first;
struct pvr2_sysfs_ctl_item *item_last;
struct device_attribute attr_v4l_minor_number;
struct device_attribute attr_v4l_radio_minor_number;
struct device_attribute attr_unit_number;
struct device_attribute attr_bus_info;
struct device_attribute attr_hdw_name;
struct device_attribute attr_hdw_desc;
int v4l_minor_number_created_ok;
int v4l_radio_minor_number_created_ok;
int unit_number_created_ok;
int bus_info_created_ok;
int hdw_name_created_ok;
int hdw_desc_created_ok;
};
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
struct pvr2_sysfs_debugifc {
struct device_attribute attr_debugcmd;
struct device_attribute attr_debuginfo;
int debugcmd_created_ok;
int debuginfo_created_ok;
};
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
struct pvr2_sysfs_ctl_item {
struct device_attribute attr_name;
struct device_attribute attr_type;
struct device_attribute attr_min;
struct device_attribute attr_max;
struct device_attribute attr_def;
struct device_attribute attr_enum;
struct device_attribute attr_bits;
struct device_attribute attr_val;
struct device_attribute attr_custom;
struct pvr2_ctrl *cptr;
int ctl_id;
struct pvr2_sysfs *chptr;
struct pvr2_sysfs_ctl_item *item_next;
struct attribute *attr_gen[7];
struct attribute_group grp;
int created_ok;
char name[80];
};
struct pvr2_sysfs_class {
struct class class;
};
static ssize_t show_name(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
const char *name;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_name);
name = pvr2_ctrl_get_desc(cip->cptr);
pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",
cip->chptr, cip->ctl_id, name);
if (!name) return -EINVAL;
return scnprintf(buf, PAGE_SIZE, "%s\n", name);
}
static ssize_t show_type(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
const char *name;
enum pvr2_ctl_type tp;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_type);
tp = pvr2_ctrl_get_type(cip->cptr);
switch (tp) {
case pvr2_ctl_int: name = "integer"; break;
case pvr2_ctl_enum: name = "enum"; break;
case pvr2_ctl_bitmask: name = "bitmask"; break;
case pvr2_ctl_bool: name = "boolean"; break;
default: name = "?"; break;
}
pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",
cip->chptr, cip->ctl_id, name);
if (!name) return -EINVAL;
return scnprintf(buf, PAGE_SIZE, "%s\n", name);
}
static ssize_t show_min(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
long val;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_min);
val = pvr2_ctrl_get_min(cip->cptr);
pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",
cip->chptr, cip->ctl_id, val);
return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
}
static ssize_t show_max(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
long val;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_max);
val = pvr2_ctrl_get_max(cip->cptr);
pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",
cip->chptr, cip->ctl_id, val);
return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
}
static ssize_t show_def(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
int val;
int ret;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def);
ret = pvr2_ctrl_get_def(cip->cptr, &val);
pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %d, stat=%d",
cip->chptr, cip->ctl_id, val, ret);
if (ret < 0) {
return ret;
}
return scnprintf(buf, PAGE_SIZE, "%d\n", val);
}
static ssize_t show_val_norm(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
int val;
int ret;
unsigned int cnt = 0;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
ret = pvr2_ctrl_get_value(cip->cptr, &val);
if (ret < 0) return ret;
ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
buf, PAGE_SIZE - 1, &cnt);
pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
cip->chptr, cip->ctl_id, cnt, buf, val);
buf[cnt] = '\n';
return cnt+1;
}
static ssize_t show_val_custom(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
int val;
int ret;
unsigned int cnt = 0;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
ret = pvr2_ctrl_get_value(cip->cptr, &val);
if (ret < 0) return ret;
ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
buf, PAGE_SIZE - 1, &cnt);
pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
cip->chptr, cip->ctl_id, cnt, buf, val);
buf[cnt] = '\n';
return cnt+1;
}
static ssize_t show_enum(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
long val;
unsigned int bcnt, ccnt, ecnt;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
ecnt = pvr2_ctrl_get_cnt(cip->cptr);
bcnt = 0;
for (val = 0; val < ecnt; val++) {
pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
PAGE_SIZE - bcnt, &ccnt);
if (!ccnt) continue;
bcnt += ccnt;
if (bcnt >= PAGE_SIZE) break;
buf[bcnt] = '\n';
bcnt++;
}
pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
cip->chptr, cip->ctl_id);
return bcnt;
}
static ssize_t show_bits(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs_ctl_item *cip;
int valid_bits, msk;
unsigned int bcnt, ccnt;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
valid_bits = pvr2_ctrl_get_mask(cip->cptr);
bcnt = 0;
for (msk = 1; valid_bits; msk <<= 1) {
if (!(msk & valid_bits)) continue;
valid_bits &= ~msk;
pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
PAGE_SIZE - bcnt, &ccnt);
bcnt += ccnt;
if (bcnt >= PAGE_SIZE) break;
buf[bcnt] = '\n';
bcnt++;
}
pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
cip->chptr, cip->ctl_id);
return bcnt;
}
static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
const char *buf,unsigned int count)
{
int ret;
int mask,val;
if (customfl) {
ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
&mask, &val);
} else {
ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
&mask, &val);
}
if (ret < 0) return ret;
ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
return ret;
}
static ssize_t store_val_norm(struct device *class_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct pvr2_sysfs_ctl_item *cip;
int ret;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
cip->chptr, cip->ctl_id, (int)count, buf);
ret = store_val_any(cip, 0, buf, count);
if (!ret) ret = count;
return ret;
}
static ssize_t store_val_custom(struct device *class_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct pvr2_sysfs_ctl_item *cip;
int ret;
cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
cip->chptr, cip->ctl_id, (int)count, buf);
ret = store_val_any(cip, 1, buf, count);
if (!ret) ret = count;
return ret;
}
static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
{
struct pvr2_sysfs_ctl_item *cip;
struct pvr2_ctrl *cptr;
unsigned int cnt,acnt;
int ret;
cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
if (!cptr) return;
cip = kzalloc(sizeof(*cip),GFP_KERNEL);
if (!cip) return;
pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
cip->cptr = cptr;
cip->ctl_id = ctl_id;
cip->chptr = sfp;
cip->item_next = NULL;
if (sfp->item_last) {
sfp->item_last->item_next = cip;
} else {
sfp->item_first = cip;
}
sfp->item_last = cip;
cip->attr_name.attr.name = "name";
cip->attr_name.attr.mode = S_IRUGO;
cip->attr_name.show = show_name;
cip->attr_type.attr.name = "type";
cip->attr_type.attr.mode = S_IRUGO;
cip->attr_type.show = show_type;
cip->attr_min.attr.name = "min_val";
cip->attr_min.attr.mode = S_IRUGO;
cip->attr_min.show = show_min;
cip->attr_max.attr.name = "max_val";
cip->attr_max.attr.mode = S_IRUGO;
cip->attr_max.show = show_max;
cip->attr_def.attr.name = "def_val";
cip->attr_def.attr.mode = S_IRUGO;
cip->attr_def.show = show_def;
cip->attr_val.attr.name = "cur_val";
cip->attr_val.attr.mode = S_IRUGO;
cip->attr_custom.attr.name = "custom_val";
cip->attr_custom.attr.mode = S_IRUGO;
cip->attr_enum.attr.name = "enum_val";
cip->attr_enum.attr.mode = S_IRUGO;
cip->attr_enum.show = show_enum;
cip->attr_bits.attr.name = "bit_val";
cip->attr_bits.attr.mode = S_IRUGO;
cip->attr_bits.show = show_bits;
if (pvr2_ctrl_is_writable(cptr)) {
cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
}
acnt = 0;
cip->attr_gen[acnt++] = &cip->attr_name.attr;
cip->attr_gen[acnt++] = &cip->attr_type.attr;
cip->attr_gen[acnt++] = &cip->attr_val.attr;
cip->attr_gen[acnt++] = &cip->attr_def.attr;
cip->attr_val.show = show_val_norm;
cip->attr_val.store = store_val_norm;
if (pvr2_ctrl_has_custom_symbols(cptr)) {
cip->attr_gen[acnt++] = &cip->attr_custom.attr;
cip->attr_custom.show = show_val_custom;
cip->attr_custom.store = store_val_custom;
}
switch (pvr2_ctrl_get_type(cptr)) {
case pvr2_ctl_enum:
// Control is an enumeration
cip->attr_gen[acnt++] = &cip->attr_enum.attr;
break;
case pvr2_ctl_int:
// Control is an integer
cip->attr_gen[acnt++] = &cip->attr_min.attr;
cip->attr_gen[acnt++] = &cip->attr_max.attr;
break;
case pvr2_ctl_bitmask:
// Control is an bitmask
cip->attr_gen[acnt++] = &cip->attr_bits.attr;
break;
default: break;
}
cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
pvr2_ctrl_get_name(cptr));
cip->name[cnt] = 0;
cip->grp.name = cip->name;
cip->grp.attrs = cip->attr_gen;
ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
if (ret) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"sysfs_create_group error: %d",
ret);
return;
}
cip->created_ok = !0;
}
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
static ssize_t debuginfo_show(struct device *, struct device_attribute *,
char *);
static ssize_t debugcmd_show(struct device *, struct device_attribute *,
char *);
static ssize_t debugcmd_store(struct device *, struct device_attribute *,
const char *, size_t count);
static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
{
struct pvr2_sysfs_debugifc *dip;
int ret;
dip = kzalloc(sizeof(*dip),GFP_KERNEL);
if (!dip) return;
dip->attr_debugcmd.attr.name = "debugcmd";
dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
dip->attr_debugcmd.show = debugcmd_show;
dip->attr_debugcmd.store = debugcmd_store;
dip->attr_debuginfo.attr.name = "debuginfo";
dip->attr_debuginfo.attr.mode = S_IRUGO;
dip->attr_debuginfo.show = debuginfo_show;
sfp->debugifc = dip;
ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
dip->debugcmd_created_ok = !0;
}
ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
dip->debuginfo_created_ok = !0;
}
}
static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
{
if (!sfp->debugifc) return;
if (sfp->debugifc->debuginfo_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->debugifc->attr_debuginfo);
}
if (sfp->debugifc->debugcmd_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->debugifc->attr_debugcmd);
}
kfree(sfp->debugifc);
sfp->debugifc = NULL;
}
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
{
unsigned int idx,cnt;
cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
for (idx = 0; idx < cnt; idx++) {
pvr2_sysfs_add_control(sfp,idx);
}
}
static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
{
struct pvr2_sysfs_ctl_item *cip1,*cip2;
for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
cip2 = cip1->item_next;
if (cip1->created_ok) {
sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
}
pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
kfree(cip1);
}
}
static void pvr2_sysfs_class_release(struct class *class)
{
struct pvr2_sysfs_class *clp;
clp = container_of(class,struct pvr2_sysfs_class,class);
pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
kfree(clp);
}
static void pvr2_sysfs_release(struct device *class_dev)
{
pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
kfree(class_dev);
}
static void class_dev_destroy(struct pvr2_sysfs *sfp)
{
if (!sfp->class_dev) return;
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
pvr2_sysfs_tear_down_debugifc(sfp);
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
pvr2_sysfs_tear_down_controls(sfp);
if (sfp->hdw_desc_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->attr_hdw_desc);
}
if (sfp->hdw_name_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->attr_hdw_name);
}
if (sfp->bus_info_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->attr_bus_info);
}
if (sfp->v4l_minor_number_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->attr_v4l_minor_number);
}
if (sfp->v4l_radio_minor_number_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->attr_v4l_radio_minor_number);
}
if (sfp->unit_number_created_ok) {
device_remove_file(sfp->class_dev,
&sfp->attr_unit_number);
}
pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
sfp->class_dev->driver_data = NULL;
device_unregister(sfp->class_dev);
sfp->class_dev = NULL;
}
static ssize_t v4l_minor_number_show(struct device *class_dev,
struct device_attribute *attr, char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
return scnprintf(buf,PAGE_SIZE,"%d\n",
pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
pvr2_v4l_type_video));
}
static ssize_t bus_info_show(struct device *class_dev,
struct device_attribute *attr, char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
return scnprintf(buf,PAGE_SIZE,"%s\n",
pvr2_hdw_get_bus_info(sfp->channel.hdw));
}
static ssize_t hdw_name_show(struct device *class_dev,
struct device_attribute *attr, char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
return scnprintf(buf,PAGE_SIZE,"%s\n",
pvr2_hdw_get_type(sfp->channel.hdw));
}
static ssize_t hdw_desc_show(struct device *class_dev,
struct device_attribute *attr, char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
return scnprintf(buf,PAGE_SIZE,"%s\n",
pvr2_hdw_get_desc(sfp->channel.hdw));
}
static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
struct device_attribute *attr,
char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
return scnprintf(buf,PAGE_SIZE,"%d\n",
pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
pvr2_v4l_type_radio));
}
static ssize_t unit_number_show(struct device *class_dev,
struct device_attribute *attr, char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
return scnprintf(buf,PAGE_SIZE,"%d\n",
pvr2_hdw_get_unit_number(sfp->channel.hdw));
}
static void class_dev_create(struct pvr2_sysfs *sfp,
struct pvr2_sysfs_class *class_ptr)
{
struct usb_device *usb_dev;
struct device *class_dev;
int ret;
usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
if (!usb_dev) return;
class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
if (!class_dev) return;
pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
class_dev->class = &class_ptr->class;
if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
dev_set_name(class_dev, "sn-%lu",
pvr2_hdw_get_sn(sfp->channel.hdw));
} else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
dev_set_name(class_dev, "unit-%c",
pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
} else {
kfree(class_dev);
return;
}
class_dev->parent = &usb_dev->dev;
sfp->class_dev = class_dev;
class_dev->driver_data = sfp;
ret = device_register(class_dev);
if (ret) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_register failed");
kfree(class_dev);
return;
}
sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
sfp->attr_v4l_minor_number.store = NULL;
ret = device_create_file(sfp->class_dev,
&sfp->attr_v4l_minor_number);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
sfp->v4l_minor_number_created_ok = !0;
}
sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
sfp->attr_v4l_radio_minor_number.store = NULL;
ret = device_create_file(sfp->class_dev,
&sfp->attr_v4l_radio_minor_number);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
sfp->v4l_radio_minor_number_created_ok = !0;
}
sfp->attr_unit_number.attr.name = "unit_number";
sfp->attr_unit_number.attr.mode = S_IRUGO;
sfp->attr_unit_number.show = unit_number_show;
sfp->attr_unit_number.store = NULL;
ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
sfp->unit_number_created_ok = !0;
}
sfp->attr_bus_info.attr.name = "bus_info_str";
sfp->attr_bus_info.attr.mode = S_IRUGO;
sfp->attr_bus_info.show = bus_info_show;
sfp->attr_bus_info.store = NULL;
ret = device_create_file(sfp->class_dev,
&sfp->attr_bus_info);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
sfp->bus_info_created_ok = !0;
}
sfp->attr_hdw_name.attr.name = "device_hardware_type";
sfp->attr_hdw_name.attr.mode = S_IRUGO;
sfp->attr_hdw_name.show = hdw_name_show;
sfp->attr_hdw_name.store = NULL;
ret = device_create_file(sfp->class_dev,
&sfp->attr_hdw_name);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
sfp->hdw_name_created_ok = !0;
}
sfp->attr_hdw_desc.attr.name = "device_hardware_description";
sfp->attr_hdw_desc.attr.mode = S_IRUGO;
sfp->attr_hdw_desc.show = hdw_desc_show;
sfp->attr_hdw_desc.store = NULL;
ret = device_create_file(sfp->class_dev,
&sfp->attr_hdw_desc);
if (ret < 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"device_create_file error: %d",
ret);
} else {
sfp->hdw_desc_created_ok = !0;
}
pvr2_sysfs_add_controls(sfp);
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
pvr2_sysfs_add_debugifc(sfp);
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
}
static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
{
struct pvr2_sysfs *sfp;
sfp = container_of(chp,struct pvr2_sysfs,channel);
if (!sfp->channel.mc_head->disconnect_flag) return;
pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
class_dev_destroy(sfp);
pvr2_channel_done(&sfp->channel);
kfree(sfp);
}
struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
struct pvr2_sysfs_class *class_ptr)
{
struct pvr2_sysfs *sfp;
sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
if (!sfp) return sfp;
pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
pvr2_channel_init(&sfp->channel,mp);
sfp->channel.check_func = pvr2_sysfs_internal_check;
class_dev_create(sfp,class_ptr);
return sfp;
}
struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
{
struct pvr2_sysfs_class *clp;
clp = kzalloc(sizeof(*clp),GFP_KERNEL);
if (!clp) return clp;
pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
clp->class.name = "pvrusb2";
clp->class.class_release = pvr2_sysfs_class_release;
clp->class.dev_release = pvr2_sysfs_release;
if (class_register(&clp->class)) {
pvr2_sysfs_trace(
"Registration failed for pvr2_sysfs_class id=%p",clp);
kfree(clp);
clp = NULL;
}
return clp;
}
void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
{
class_unregister(&clp->class);
}
#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
static ssize_t debuginfo_show(struct device *class_dev,
struct device_attribute *attr, char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
pvr2_hdw_trigger_module_log(sfp->channel.hdw);
return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
}
static ssize_t debugcmd_show(struct device *class_dev,
struct device_attribute *attr, char *buf)
{
struct pvr2_sysfs *sfp;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
}
static ssize_t debugcmd_store(struct device *class_dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct pvr2_sysfs *sfp;
int ret;
sfp = (struct pvr2_sysfs *)class_dev->driver_data;
if (!sfp) return -EINVAL;
ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
if (ret < 0) return ret;
return count;
}
#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
/*
Stuff for Emacs to see, in order to encourage consistent editing style:
*** Local Variables: ***
*** mode: c ***
*** fill-column: 75 ***
*** tab-width: 8 ***
*** c-basic-offset: 8 ***
*** End: ***
*/
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