V4L/DVB (4228a): pvrusb2 to kernel 2.6.18
Implement V4L2 driver for the Hauppauge PVR USB2 TV tuner.
The Hauppauge PVR USB2 is a USB connected TV tuner with an embedded
cx23416 hardware MPEG2 encoder. There are two major variants of this
device; this driver handles both. Any V4L2 application which
understands MPEG2 video stream data should be able to work with this
device.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
new file mode 100644
index 0000000..c756b98
--- /dev/null
+++ b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
@@ -0,0 +1,775 @@
+/*
+ *
+ * $Id$
+ *
+ * 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/config.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <asm/semaphore.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 class_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 sysfs_ops kops;
+ struct kobj_type ktype;
+ struct class_device_attribute attr_v4l_minor_number;
+ struct class_device_attribute attr_unit_number;
+};
+
+#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
+struct pvr2_sysfs_debugifc {
+ struct class_device_attribute attr_debugcmd;
+ struct class_device_attribute attr_debuginfo;
+};
+#endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
+
+struct pvr2_sysfs_ctl_item {
+ struct class_device_attribute attr_name;
+ struct class_device_attribute attr_min;
+ struct class_device_attribute attr_max;
+ struct class_device_attribute attr_enum;
+ struct class_device_attribute attr_bits;
+ struct class_device_attribute attr_val;
+ struct class_device_attribute attr_custom;
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *chptr;
+ struct pvr2_sysfs_ctl_item *item_next;
+ struct attribute *attr_gen[6];
+ struct attribute_group grp;
+ char name[80];
+};
+
+struct pvr2_sysfs_class {
+ struct class class;
+};
+
+static ssize_t show_name(int id,struct class_device *class_dev,char *buf)
+{
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *sfp;
+ const char *name;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (!cptr) return -EINVAL;
+
+ name = pvr2_ctrl_get_desc(cptr);
+ pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
+
+ if (!name) return -EINVAL;
+
+ return scnprintf(buf,PAGE_SIZE,"%s\n",name);
+}
+
+static ssize_t show_min(int id,struct class_device *class_dev,char *buf)
+{
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *sfp;
+ long val;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (!cptr) return -EINVAL;
+ val = pvr2_ctrl_get_min(cptr);
+
+ pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
+
+ return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
+}
+
+static ssize_t show_max(int id,struct class_device *class_dev,char *buf)
+{
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *sfp;
+ long val;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (!cptr) return -EINVAL;
+ val = pvr2_ctrl_get_max(cptr);
+
+ pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
+
+ return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
+}
+
+static ssize_t show_val_norm(int id,struct class_device *class_dev,char *buf)
+{
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *sfp;
+ int val,ret;
+ unsigned int cnt = 0;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (!cptr) return -EINVAL;
+
+ ret = pvr2_ctrl_get_value(cptr,&val);
+ if (ret < 0) return ret;
+
+ ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
+ buf,PAGE_SIZE-1,&cnt);
+
+ pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
+ sfp,id,cnt,buf,val);
+ buf[cnt] = '\n';
+ return cnt+1;
+}
+
+static ssize_t show_val_custom(int id,struct class_device *class_dev,char *buf)
+{
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *sfp;
+ int val,ret;
+ unsigned int cnt = 0;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (!cptr) return -EINVAL;
+
+ ret = pvr2_ctrl_get_value(cptr,&val);
+ if (ret < 0) return ret;
+
+ ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
+ buf,PAGE_SIZE-1,&cnt);
+
+ pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
+ sfp,id,cnt,buf,val);
+ buf[cnt] = '\n';
+ return cnt+1;
+}
+
+static ssize_t show_enum(int id,struct class_device *class_dev,char *buf)
+{
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *sfp;
+ long val;
+ unsigned int bcnt,ccnt,ecnt;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (!cptr) return -EINVAL;
+ ecnt = pvr2_ctrl_get_cnt(cptr);
+ bcnt = 0;
+ for (val = 0; val < ecnt; val++) {
+ pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
+ bcnt += ccnt;
+ if (bcnt >= PAGE_SIZE) break;
+ buf[bcnt] = '\n';
+ bcnt++;
+ }
+ pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
+ return bcnt;
+}
+
+static ssize_t show_bits(int id,struct class_device *class_dev,char *buf)
+{
+ struct pvr2_ctrl *cptr;
+ struct pvr2_sysfs *sfp;
+ int valid_bits,msk;
+ unsigned int bcnt,ccnt;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (!cptr) return -EINVAL;
+ valid_bits = pvr2_ctrl_get_mask(cptr);
+ bcnt = 0;
+ for (msk = 1; valid_bits; msk <<= 1) {
+ if (!(msk & valid_bits)) continue;
+ valid_bits &= ~msk;
+ pvr2_ctrl_get_valname(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)",sfp,id);
+ return bcnt;
+}
+
+static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
+ const char *buf,unsigned int count)
+{
+ struct pvr2_ctrl *cptr;
+ int ret;
+ int mask,val;
+
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
+ if (customfl) {
+ ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
+ } else {
+ ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
+ }
+ if (ret < 0) return ret;
+ ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
+ pvr2_hdw_commit_ctl(sfp->channel.hdw);
+ return ret;
+}
+
+static ssize_t store_val_norm(int id,struct class_device *class_dev,
+ const char *buf,size_t count)
+{
+ struct pvr2_sysfs *sfp;
+ int ret;
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ ret = store_val_any(id,0,sfp,buf,count);
+ if (!ret) ret = count;
+ return ret;
+}
+
+static ssize_t store_val_custom(int id,struct class_device *class_dev,
+ const char *buf,size_t count)
+{
+ struct pvr2_sysfs *sfp;
+ int ret;
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ ret = store_val_any(id,1,sfp,buf,count);
+ if (!ret) ret = count;
+ return ret;
+}
+
+/*
+ Mike Isely <isely@pobox.com> 30-April-2005
+
+ This next batch of horrible preprocessor hackery is needed because the
+ kernel's class_device_attribute mechanism fails to pass the actual
+ attribute through to the show / store functions, which means we have no
+ way to package up any attribute-specific parameters, like for example the
+ control id. So we work around this brain-damage by encoding the control
+ id into the show / store functions themselves and pick the function based
+ on the control id we're setting up. These macros try to ease the pain.
+ Yuck.
+*/
+
+#define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
+static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,char *buf) \
+{ return sf_name(ctl_id,class_dev,buf); }
+
+#define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
+static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,const char *buf,size_t count) \
+{ return sf_name(ctl_id,class_dev,buf,count); }
+
+#define CREATE_BATCH(ctl_id) \
+CREATE_SHOW_INSTANCE(show_name,ctl_id) \
+CREATE_SHOW_INSTANCE(show_min,ctl_id) \
+CREATE_SHOW_INSTANCE(show_max,ctl_id) \
+CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
+CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
+CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
+CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
+CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
+CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
+
+CREATE_BATCH(0)
+CREATE_BATCH(1)
+CREATE_BATCH(2)
+CREATE_BATCH(3)
+CREATE_BATCH(4)
+CREATE_BATCH(5)
+CREATE_BATCH(6)
+CREATE_BATCH(7)
+CREATE_BATCH(8)
+CREATE_BATCH(9)
+CREATE_BATCH(10)
+CREATE_BATCH(11)
+CREATE_BATCH(12)
+CREATE_BATCH(13)
+CREATE_BATCH(14)
+CREATE_BATCH(15)
+CREATE_BATCH(16)
+CREATE_BATCH(17)
+CREATE_BATCH(18)
+CREATE_BATCH(19)
+CREATE_BATCH(20)
+CREATE_BATCH(21)
+CREATE_BATCH(22)
+CREATE_BATCH(23)
+CREATE_BATCH(24)
+CREATE_BATCH(25)
+CREATE_BATCH(26)
+CREATE_BATCH(27)
+CREATE_BATCH(28)
+CREATE_BATCH(29)
+CREATE_BATCH(30)
+CREATE_BATCH(31)
+CREATE_BATCH(32)
+CREATE_BATCH(33)
+
+struct pvr2_sysfs_func_set {
+ ssize_t (*show_name)(struct class_device *,char *);
+ ssize_t (*show_min)(struct class_device *,char *);
+ ssize_t (*show_max)(struct class_device *,char *);
+ ssize_t (*show_enum)(struct class_device *,char *);
+ ssize_t (*show_bits)(struct class_device *,char *);
+ ssize_t (*show_val_norm)(struct class_device *,char *);
+ ssize_t (*store_val_norm)(struct class_device *,
+ const char *,size_t);
+ ssize_t (*show_val_custom)(struct class_device *,char *);
+ ssize_t (*store_val_custom)(struct class_device *,
+ const char *,size_t);
+};
+
+#define INIT_BATCH(ctl_id) \
+[ctl_id] = { \
+ .show_name = show_name_##ctl_id, \
+ .show_min = show_min_##ctl_id, \
+ .show_max = show_max_##ctl_id, \
+ .show_enum = show_enum_##ctl_id, \
+ .show_bits = show_bits_##ctl_id, \
+ .show_val_norm = show_val_norm_##ctl_id, \
+ .store_val_norm = store_val_norm_##ctl_id, \
+ .show_val_custom = show_val_custom_##ctl_id, \
+ .store_val_custom = store_val_custom_##ctl_id, \
+} \
+
+static struct pvr2_sysfs_func_set funcs[] = {
+ INIT_BATCH(0),
+ INIT_BATCH(1),
+ INIT_BATCH(2),
+ INIT_BATCH(3),
+ INIT_BATCH(4),
+ INIT_BATCH(5),
+ INIT_BATCH(6),
+ INIT_BATCH(7),
+ INIT_BATCH(8),
+ INIT_BATCH(9),
+ INIT_BATCH(10),
+ INIT_BATCH(11),
+ INIT_BATCH(12),
+ INIT_BATCH(13),
+ INIT_BATCH(14),
+ INIT_BATCH(15),
+ INIT_BATCH(16),
+ INIT_BATCH(17),
+ INIT_BATCH(18),
+ INIT_BATCH(19),
+ INIT_BATCH(20),
+ INIT_BATCH(21),
+ INIT_BATCH(22),
+ INIT_BATCH(23),
+ INIT_BATCH(24),
+ INIT_BATCH(25),
+ INIT_BATCH(26),
+ INIT_BATCH(27),
+ INIT_BATCH(28),
+ INIT_BATCH(29),
+ INIT_BATCH(30),
+ INIT_BATCH(31),
+ INIT_BATCH(32),
+ INIT_BATCH(33),
+};
+
+
+static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
+{
+ struct pvr2_sysfs_ctl_item *cip;
+ struct pvr2_sysfs_func_set *fp;
+ struct pvr2_ctrl *cptr;
+ unsigned int cnt,acnt;
+
+ if ((ctl_id < 0) || (ctl_id >= (sizeof(funcs)/sizeof(funcs[0])))) {
+ return;
+ }
+
+ fp = funcs + ctl_id;
+ cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
+ if (!cptr) return;
+
+ cip = kmalloc(sizeof(*cip),GFP_KERNEL);
+ if (!cip) return;
+ memset(cip,0,sizeof(*cip));
+ pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
+
+ cip->cptr = cptr;
+
+ cip->chptr = sfp;
+ cip->item_next = 0;
+ if (sfp->item_last) {
+ sfp->item_last->item_next = cip;
+ } else {
+ sfp->item_first = cip;
+ }
+ sfp->item_last = cip;
+
+ cip->attr_name.attr.owner = THIS_MODULE;
+ cip->attr_name.attr.name = "name";
+ cip->attr_name.attr.mode = S_IRUGO;
+ cip->attr_name.show = fp->show_name;
+
+ cip->attr_min.attr.owner = THIS_MODULE;
+ cip->attr_min.attr.name = "min_val";
+ cip->attr_min.attr.mode = S_IRUGO;
+ cip->attr_min.show = fp->show_min;
+
+ cip->attr_max.attr.owner = THIS_MODULE;
+ cip->attr_max.attr.name = "max_val";
+ cip->attr_max.attr.mode = S_IRUGO;
+ cip->attr_max.show = fp->show_max;
+
+ cip->attr_val.attr.owner = THIS_MODULE;
+ cip->attr_val.attr.name = "cur_val";
+ cip->attr_val.attr.mode = S_IRUGO;
+
+ cip->attr_custom.attr.owner = THIS_MODULE;
+ cip->attr_custom.attr.name = "custom_val";
+ cip->attr_custom.attr.mode = S_IRUGO;
+
+ cip->attr_enum.attr.owner = THIS_MODULE;
+ cip->attr_enum.attr.name = "enum_val";
+ cip->attr_enum.attr.mode = S_IRUGO;
+ cip->attr_enum.show = fp->show_enum;
+
+ cip->attr_bits.attr.owner = THIS_MODULE;
+ cip->attr_bits.attr.name = "bit_val";
+ cip->attr_bits.attr.mode = S_IRUGO;
+ cip->attr_bits.show = fp->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_val.attr;
+ cip->attr_val.show = fp->show_val_norm;
+ cip->attr_val.store = fp->store_val_norm;
+ if (pvr2_ctrl_has_custom_symbols(cptr)) {
+ cip->attr_gen[acnt++] = &cip->attr_custom.attr;
+ cip->attr_custom.show = fp->show_val_custom;
+ cip->attr_custom.store = fp->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;
+
+ sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
+}
+
+#ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
+static ssize_t debuginfo_show(struct class_device *,char *);
+static ssize_t debugcmd_show(struct class_device *,char *);
+static ssize_t debugcmd_store(struct class_device *,const char *,size_t count);
+
+static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
+{
+ struct pvr2_sysfs_debugifc *dip;
+ dip = kmalloc(sizeof(*dip),GFP_KERNEL);
+ if (!dip) return;
+ memset(dip,0,sizeof(*dip));
+ dip->attr_debugcmd.attr.owner = THIS_MODULE;
+ 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.owner = THIS_MODULE;
+ dip->attr_debuginfo.attr.name = "debuginfo";
+ dip->attr_debuginfo.attr.mode = S_IRUGO;
+ dip->attr_debuginfo.show = debuginfo_show;
+ sfp->debugifc = dip;
+ class_device_create_file(sfp->class_dev,&dip->attr_debugcmd);
+ class_device_create_file(sfp->class_dev,&dip->attr_debuginfo);
+}
+
+
+static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
+{
+ if (!sfp->debugifc) return;
+ class_device_remove_file(sfp->class_dev,
+ &sfp->debugifc->attr_debuginfo);
+ class_device_remove_file(sfp->class_dev,&sfp->debugifc->attr_debugcmd);
+ kfree(sfp->debugifc);
+ sfp->debugifc = 0;
+}
+#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;
+ 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 class_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);
+ class_device_remove_file(sfp->class_dev,&sfp->attr_v4l_minor_number);
+ class_device_remove_file(sfp->class_dev,&sfp->attr_unit_number);
+ pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
+ sfp->class_dev->class_data = 0;
+ class_device_unregister(sfp->class_dev);
+ sfp->class_dev = 0;
+}
+
+
+static ssize_t v4l_minor_number_show(struct class_device *class_dev,char *buf)
+{
+ struct pvr2_sysfs *sfp;
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ return scnprintf(buf,PAGE_SIZE,"%d\n",
+ pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw));
+}
+
+
+static ssize_t unit_number_show(struct class_device *class_dev,char *buf)
+{
+ struct pvr2_sysfs *sfp;
+ sfp = (struct pvr2_sysfs *)class_dev->class_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 class_device *class_dev;
+ usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
+ if (!usb_dev) return;
+ class_dev = kmalloc(sizeof(*class_dev),GFP_KERNEL);
+ if (!class_dev) return;
+ memset(class_dev,0,sizeof(*class_dev));
+
+ 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->class_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->class_id,BUS_ID_SIZE,"unit-%c",
+ pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
+ } else {
+ kfree(class_dev);
+ return;
+ }
+
+ class_dev->dev = &usb_dev->dev;
+
+ sfp->class_dev = class_dev;
+ class_dev->class_data = sfp;
+ class_device_register(class_dev);
+
+ sfp->attr_v4l_minor_number.attr.owner = THIS_MODULE;
+ 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 = 0;
+ class_device_create_file(sfp->class_dev,&sfp->attr_v4l_minor_number);
+ sfp->attr_unit_number.attr.owner = THIS_MODULE;
+ 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 = 0;
+ class_device_create_file(sfp->class_dev,&sfp->attr_unit_number);
+
+ 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 = kmalloc(sizeof(*sfp),GFP_KERNEL);
+ if (!sfp) return sfp;
+ memset(sfp,0,sizeof(*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;
+}
+
+
+static int pvr2_sysfs_hotplug(struct class_device *cd,char **envp,
+ int numenvp,char *buf,int size)
+{
+ /* Even though we don't do anything here, we still need this function
+ because sysfs will still try to call it. */
+ return 0;
+}
+
+struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
+{
+ struct pvr2_sysfs_class *clp;
+ clp = kmalloc(sizeof(*clp),GFP_KERNEL);
+ if (!clp) return clp;
+ memset(clp,0,sizeof(*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.release = pvr2_sysfs_release;
+ clp->class.uevent = pvr2_sysfs_hotplug;
+ if (class_register(&clp->class)) {
+ pvr2_sysfs_trace(
+ "Registration failed for pvr2_sysfs_class id=%p",clp);
+ kfree(clp);
+ clp = 0;
+ }
+ 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 class_device *class_dev,char *buf)
+{
+ struct pvr2_sysfs *sfp;
+ sfp = (struct pvr2_sysfs *)class_dev->class_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 class_device *class_dev,char *buf)
+{
+ struct pvr2_sysfs *sfp;
+ sfp = (struct pvr2_sysfs *)class_dev->class_data;
+ if (!sfp) return -EINVAL;
+ return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
+}
+
+
+static ssize_t debugcmd_store(struct class_device *class_dev,
+ const char *buf,size_t count)
+{
+ struct pvr2_sysfs *sfp;
+ int ret;
+
+ sfp = (struct pvr2_sysfs *)class_dev->class_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: ***
+ */