diff options
Diffstat (limited to 'v4l_experimental/pvrusb2/pvrusb2-context.c')
| -rw-r--r-- | v4l_experimental/pvrusb2/pvrusb2-context.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/v4l_experimental/pvrusb2/pvrusb2-context.c b/v4l_experimental/pvrusb2/pvrusb2-context.c deleted file mode 100644 index 1f8b400a0..000000000 --- a/v4l_experimental/pvrusb2/pvrusb2-context.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * $Id: pvrusb2-context.c,v 1.3 2006/01/23 06:58:06 mcisely Exp $ - * - * 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 "pvrusb2-context.h" -#include "pvrusb2-io.h" -#include "pvrusb2-hdw.h" -#include "pvrusb2-debug.h" -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <asm/semaphore.h> - - -static void pvr2_context_destroy(struct pvr2_context *mp) -{ - if (mp->hdw) pvr2_hdw_destroy(mp->hdw); - pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr_main id=%p",mp); - flush_workqueue(mp->workqueue); - destroy_workqueue(mp->workqueue); - kfree(mp); -} - - -static void pvr2_context_trigger_poll(struct pvr2_context *mp) -{ - queue_work(mp->workqueue,&mp->workpoll); -} - - -static void pvr2_context_poll(struct pvr2_context *mp) -{ - pvr2_trace(PVR2_TRACE_DEBUG,"pvr2_context_poll BEGIN"); - pvr2_context_enter(mp); do { - pvr2_hdw_poll(mp->hdw); - } while (0); pvr2_context_exit(mp); - pvr2_trace(PVR2_TRACE_DEBUG,"pvr2_context_poll END"); -} - - -static void pvr2_context_setup(struct pvr2_context *mp) -{ - pvr2_context_enter(mp); do { - if (!pvr2_hdw_dev_ok(mp->hdw)) break; - pvr2_hdw_setup(mp->hdw); - pvr2_hdw_setup_poll_trigger( - mp->hdw, - (void (*)(void *))pvr2_context_trigger_poll, - mp); - if (!pvr2_hdw_dev_ok(mp->hdw)) break; - if (!pvr2_hdw_init_ok(mp->hdw)) break; - mp->video_stream.stream = pvr2_hdw_get_video_stream(mp->hdw); - if (mp->setup_func) { - mp->setup_func(mp); - } - } while (0); pvr2_context_exit(mp); -} - - -struct pvr2_context *pvr2_context_create( - struct usb_interface *intf,void (*setup_func)(struct pvr2_context *)) -{ - struct pvr2_context *mp = 0; - mp = kmalloc(sizeof(*mp),GFP_KERNEL); - if (!mp) goto done; - memset(mp,0,sizeof(*mp)); - pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_main id=%p",mp); - mp->setup_func = setup_func; - mutex_init(&mp->mutex); - mp->hdw = pvr2_hdw_create(intf); - if (!mp->hdw) { - pvr2_context_destroy(mp); - mp = 0; - goto done; - } - - mp->workqueue = create_singlethread_workqueue("pvrusb2"); - INIT_WORK(&mp->workinit,(void (*)(void*))pvr2_context_setup,mp); - INIT_WORK(&mp->workpoll,(void (*)(void*))pvr2_context_poll,mp); - queue_work(mp->workqueue,&mp->workinit); - done: - return mp; -} - - -void pvr2_context_enter(struct pvr2_context *mp) -{ - mutex_lock(&mp->mutex); - pvr2_trace(PVR2_TRACE_CREG,"pvr2_context_enter(id=%p)",mp); -} - - -void pvr2_context_exit(struct pvr2_context *mp) -{ - int destroy_flag = 0; - if (!(mp->mc_first || !mp->disconnect_flag)) { - destroy_flag = !0; - } - pvr2_trace(PVR2_TRACE_CREG,"pvr2_context_exit(id=%p) outside",mp); - mutex_unlock(&mp->mutex); - if (destroy_flag) pvr2_context_destroy(mp); -} - - -static void pvr2_context_run_checks(struct pvr2_context *mp) -{ - struct pvr2_channel *ch1,*ch2; - for (ch1 = mp->mc_first; ch1; ch1 = ch2) { - ch2 = ch1->mc_next; - if (ch1->check_func) { - ch1->check_func(ch1); - } - } -} - - -void pvr2_context_disconnect(struct pvr2_context *mp) -{ - pvr2_context_enter(mp); do { - pvr2_hdw_disconnect(mp->hdw); - mp->disconnect_flag = !0; - pvr2_context_run_checks(mp); - } while (0); pvr2_context_exit(mp); -} - - -void pvr2_channel_init(struct pvr2_channel *cp,struct pvr2_context *mp) -{ - cp->hdw = mp->hdw; - cp->mc_head = mp; - cp->mc_next = 0; - cp->mc_prev = mp->mc_last; - if (mp->mc_last) { - mp->mc_last->mc_next = cp; - } else { - mp->mc_first = cp; - } - mp->mc_last = cp; -} - - -static void pvr2_channel_disclaim_stream(struct pvr2_channel *cp) -{ - if (!cp->stream) return; - pvr2_stream_kill(cp->stream->stream); - cp->stream->user = 0; - cp->stream = 0; -} - - -void pvr2_channel_done(struct pvr2_channel *cp) -{ - struct pvr2_context *mp = cp->mc_head; - pvr2_channel_disclaim_stream(cp); - if (cp->mc_next) { - cp->mc_next->mc_prev = cp->mc_prev; - } else { - mp->mc_last = cp->mc_prev; - } - if (cp->mc_prev) { - cp->mc_prev->mc_next = cp->mc_next; - } else { - mp->mc_first = cp->mc_next; - } - cp->hdw = 0; -} - - -int pvr2_channel_claim_stream(struct pvr2_channel *cp, - struct pvr2_context_stream *sp) -{ - int code = 0; - pvr2_context_enter(cp->mc_head); do { - if (sp == cp->stream) break; - if (sp->user) { - code = -EBUSY; - break; - } - pvr2_channel_disclaim_stream(cp); - if (!sp) break; - sp->user = cp; - cp->stream = sp; - } while (0); pvr2_context_exit(cp->mc_head); - return code; -} - - -/* - 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: *** - */ |