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android_kernel_motorola_sm6225/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
Mike Isely f90fe7a3f7 V4L/DVB (7939): pvrusb2: Remove sysfs interface hackery 
Back in the early days of the pvrusb2 driver, the kernel class
mechanism in use for the sysfs interface had no means to pass
per-attribute information to the show / store functions.  This forced
me to implement a horrible ugly thunking mechanism (i.e. infer the
missing data through the use of dedicated cookie cutter bounce
functions).  However now we're using a better mechanism which also
passes enough additional information to the show / store functions
that we no longer need the hack.  So eliminate all the crap.  Yay!

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20 07:07:07 -03:00

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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_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_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_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_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)) {
snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
pvr2_hdw_get_sn(sfp->channel.hdw));
} else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
snprintf(class_dev->bus_id, BUS_ID_SIZE, "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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