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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 05:13:22 +0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 21:25:07 +0200
commit0c0d06cac63ee327ceaab4b5ffe2206574ab86bd (patch)
treee759f0dc3185d97f2a0c6b5cd5e32ea6faa74d40 /drivers/media/video/pvrusb2/pvrusb2-context.c
parent[media] b2c2: fix driver's build due to the lack of pci DMA code (diff)
downloadlinux-0c0d06cac63ee327ceaab4b5ffe2206574ab86bd.tar.xz
linux-0c0d06cac63ee327ceaab4b5ffe2206574ab86bd.zip
[media] rename most media/video usb drivers to media/usb
Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-context.c')
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-context.c431
1 files changed, 0 insertions, 431 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-context.c b/drivers/media/video/pvrusb2/pvrusb2-context.c
deleted file mode 100644
index 7c19ff72e6b3..000000000000
--- a/drivers/media/video/pvrusb2/pvrusb2-context.c
+++ /dev/null
@@ -1,431 +0,0 @@
-/*
- *
- * 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-ioread.h"
-#include "pvrusb2-hdw.h"
-#include "pvrusb2-debug.h"
-#include <linux/wait.h>
-#include <linux/kthread.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-
-static struct pvr2_context *pvr2_context_exist_first;
-static struct pvr2_context *pvr2_context_exist_last;
-static struct pvr2_context *pvr2_context_notify_first;
-static struct pvr2_context *pvr2_context_notify_last;
-static DEFINE_MUTEX(pvr2_context_mutex);
-static DECLARE_WAIT_QUEUE_HEAD(pvr2_context_sync_data);
-static DECLARE_WAIT_QUEUE_HEAD(pvr2_context_cleanup_data);
-static int pvr2_context_cleanup_flag;
-static int pvr2_context_cleaned_flag;
-static struct task_struct *pvr2_context_thread_ptr;
-
-
-static void pvr2_context_set_notify(struct pvr2_context *mp, int fl)
-{
- int signal_flag = 0;
- mutex_lock(&pvr2_context_mutex);
- if (fl) {
- if (!mp->notify_flag) {
- signal_flag = (pvr2_context_notify_first == NULL);
- mp->notify_prev = pvr2_context_notify_last;
- mp->notify_next = NULL;
- pvr2_context_notify_last = mp;
- if (mp->notify_prev) {
- mp->notify_prev->notify_next = mp;
- } else {
- pvr2_context_notify_first = mp;
- }
- mp->notify_flag = !0;
- }
- } else {
- if (mp->notify_flag) {
- mp->notify_flag = 0;
- if (mp->notify_next) {
- mp->notify_next->notify_prev = mp->notify_prev;
- } else {
- pvr2_context_notify_last = mp->notify_prev;
- }
- if (mp->notify_prev) {
- mp->notify_prev->notify_next = mp->notify_next;
- } else {
- pvr2_context_notify_first = mp->notify_next;
- }
- }
- }
- mutex_unlock(&pvr2_context_mutex);
- if (signal_flag) wake_up(&pvr2_context_sync_data);
-}
-
-
-static void pvr2_context_destroy(struct pvr2_context *mp)
-{
- pvr2_trace(PVR2_TRACE_CTXT,"pvr2_context %p (destroy)",mp);
- if (mp->hdw) pvr2_hdw_destroy(mp->hdw);
- pvr2_context_set_notify(mp, 0);
- mutex_lock(&pvr2_context_mutex);
- if (mp->exist_next) {
- mp->exist_next->exist_prev = mp->exist_prev;
- } else {
- pvr2_context_exist_last = mp->exist_prev;
- }
- if (mp->exist_prev) {
- mp->exist_prev->exist_next = mp->exist_next;
- } else {
- pvr2_context_exist_first = mp->exist_next;
- }
- if (!pvr2_context_exist_first) {
- /* Trigger wakeup on control thread in case it is waiting
- for an exit condition. */
- wake_up(&pvr2_context_sync_data);
- }
- mutex_unlock(&pvr2_context_mutex);
- kfree(mp);
-}
-
-
-static void pvr2_context_notify(struct pvr2_context *mp)
-{
- pvr2_context_set_notify(mp,!0);
-}
-
-
-static void pvr2_context_check(struct pvr2_context *mp)
-{
- struct pvr2_channel *ch1, *ch2;
- pvr2_trace(PVR2_TRACE_CTXT,
- "pvr2_context %p (notify)", mp);
- if (!mp->initialized_flag && !mp->disconnect_flag) {
- mp->initialized_flag = !0;
- pvr2_trace(PVR2_TRACE_CTXT,
- "pvr2_context %p (initialize)", mp);
- /* Finish hardware initialization */
- if (pvr2_hdw_initialize(mp->hdw,
- (void (*)(void *))pvr2_context_notify,
- mp)) {
- mp->video_stream.stream =
- pvr2_hdw_get_video_stream(mp->hdw);
- /* Trigger interface initialization. By doing this
- here initialization runs in our own safe and
- cozy thread context. */
- if (mp->setup_func) mp->setup_func(mp);
- } else {
- pvr2_trace(PVR2_TRACE_CTXT,
- "pvr2_context %p (thread skipping setup)",
- mp);
- /* Even though initialization did not succeed,
- we're still going to continue anyway. We need
- to do this in order to await the expected
- disconnect (which we will detect in the normal
- course of operation). */
- }
- }
-
- for (ch1 = mp->mc_first; ch1; ch1 = ch2) {
- ch2 = ch1->mc_next;
- if (ch1->check_func) ch1->check_func(ch1);
- }
-
- if (mp->disconnect_flag && !mp->mc_first) {
- /* Go away... */
- pvr2_context_destroy(mp);
- return;
- }
-}
-
-
-static int pvr2_context_shutok(void)
-{
- return pvr2_context_cleanup_flag && (pvr2_context_exist_first == NULL);
-}
-
-
-static int pvr2_context_thread_func(void *foo)
-{
- struct pvr2_context *mp;
-
- pvr2_trace(PVR2_TRACE_CTXT,"pvr2_context thread start");
-
- do {
- while ((mp = pvr2_context_notify_first) != NULL) {
- pvr2_context_set_notify(mp, 0);
- pvr2_context_check(mp);
- }
- wait_event_interruptible(
- pvr2_context_sync_data,
- ((pvr2_context_notify_first != NULL) ||
- pvr2_context_shutok()));
- } while (!pvr2_context_shutok());
-
- pvr2_context_cleaned_flag = !0;
- wake_up(&pvr2_context_cleanup_data);
-
- pvr2_trace(PVR2_TRACE_CTXT,"pvr2_context thread cleaned up");
-
- wait_event_interruptible(
- pvr2_context_sync_data,
- kthread_should_stop());
-
- pvr2_trace(PVR2_TRACE_CTXT,"pvr2_context thread end");
-
- return 0;
-}
-
-
-int pvr2_context_global_init(void)
-{
- pvr2_context_thread_ptr = kthread_run(pvr2_context_thread_func,
- NULL,
- "pvrusb2-context");
- return (pvr2_context_thread_ptr ? 0 : -ENOMEM);
-}
-
-
-void pvr2_context_global_done(void)
-{
- pvr2_context_cleanup_flag = !0;
- wake_up(&pvr2_context_sync_data);
- wait_event_interruptible(
- pvr2_context_cleanup_data,
- pvr2_context_cleaned_flag);
- kthread_stop(pvr2_context_thread_ptr);
-}
-
-
-struct pvr2_context *pvr2_context_create(
- struct usb_interface *intf,
- const struct usb_device_id *devid,
- void (*setup_func)(struct pvr2_context *))
-{
- struct pvr2_context *mp = NULL;
- mp = kzalloc(sizeof(*mp),GFP_KERNEL);
- if (!mp) goto done;
- pvr2_trace(PVR2_TRACE_CTXT,"pvr2_context %p (create)",mp);
- mp->setup_func = setup_func;
- mutex_init(&mp->mutex);
- mutex_lock(&pvr2_context_mutex);
- mp->exist_prev = pvr2_context_exist_last;
- mp->exist_next = NULL;
- pvr2_context_exist_last = mp;
- if (mp->exist_prev) {
- mp->exist_prev->exist_next = mp;
- } else {
- pvr2_context_exist_first = mp;
- }
- mutex_unlock(&pvr2_context_mutex);
- mp->hdw = pvr2_hdw_create(intf,devid);
- if (!mp->hdw) {
- pvr2_context_destroy(mp);
- mp = NULL;
- goto done;
- }
- pvr2_context_set_notify(mp, !0);
- done:
- return mp;
-}
-
-
-static void pvr2_context_reset_input_limits(struct pvr2_context *mp)
-{
- unsigned int tmsk,mmsk;
- struct pvr2_channel *cp;
- struct pvr2_hdw *hdw = mp->hdw;
- mmsk = pvr2_hdw_get_input_available(hdw);
- tmsk = mmsk;
- for (cp = mp->mc_first; cp; cp = cp->mc_next) {
- if (!cp->input_mask) continue;
- tmsk &= cp->input_mask;
- }
- pvr2_hdw_set_input_allowed(hdw,mmsk,tmsk);
- pvr2_hdw_commit_ctl(hdw);
-}
-
-
-static void pvr2_context_enter(struct pvr2_context *mp)
-{
- mutex_lock(&mp->mutex);
-}
-
-
-static void pvr2_context_exit(struct pvr2_context *mp)
-{
- int destroy_flag = 0;
- if (!(mp->mc_first || !mp->disconnect_flag)) {
- destroy_flag = !0;
- }
- mutex_unlock(&mp->mutex);
- if (destroy_flag) pvr2_context_notify(mp);
-}
-
-
-void pvr2_context_disconnect(struct pvr2_context *mp)
-{
- pvr2_hdw_disconnect(mp->hdw);
- mp->disconnect_flag = !0;
- pvr2_context_notify(mp);
-}
-
-
-void pvr2_channel_init(struct pvr2_channel *cp,struct pvr2_context *mp)
-{
- pvr2_context_enter(mp);
- cp->hdw = mp->hdw;
- cp->mc_head = mp;
- cp->mc_next = NULL;
- 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;
- pvr2_context_exit(mp);
-}
-
-
-static void pvr2_channel_disclaim_stream(struct pvr2_channel *cp)
-{
- if (!cp->stream) return;
- pvr2_stream_kill(cp->stream->stream);
- cp->stream->user = NULL;
- cp->stream = NULL;
-}
-
-
-void pvr2_channel_done(struct pvr2_channel *cp)
-{
- struct pvr2_context *mp = cp->mc_head;
- pvr2_context_enter(mp);
- cp->input_mask = 0;
- pvr2_channel_disclaim_stream(cp);
- pvr2_context_reset_input_limits(mp);
- 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 = NULL;
- pvr2_context_exit(mp);
-}
-
-
-int pvr2_channel_limit_inputs(struct pvr2_channel *cp,unsigned int cmsk)
-{
- unsigned int tmsk,mmsk;
- int ret = 0;
- struct pvr2_channel *p2;
- struct pvr2_hdw *hdw = cp->hdw;
-
- mmsk = pvr2_hdw_get_input_available(hdw);
- cmsk &= mmsk;
- if (cmsk == cp->input_mask) {
- /* No change; nothing to do */
- return 0;
- }
-
- pvr2_context_enter(cp->mc_head);
- do {
- if (!cmsk) {
- cp->input_mask = 0;
- pvr2_context_reset_input_limits(cp->mc_head);
- break;
- }
- tmsk = mmsk;
- for (p2 = cp->mc_head->mc_first; p2; p2 = p2->mc_next) {
- if (p2 == cp) continue;
- if (!p2->input_mask) continue;
- tmsk &= p2->input_mask;
- }
- if (!(tmsk & cmsk)) {
- ret = -EPERM;
- break;
- }
- tmsk &= cmsk;
- if ((ret = pvr2_hdw_set_input_allowed(hdw,mmsk,tmsk)) != 0) {
- /* Internal failure changing allowed list; probably
- should not happen, but react if it does. */
- break;
- }
- cp->input_mask = cmsk;
- pvr2_hdw_commit_ctl(hdw);
- } while (0);
- pvr2_context_exit(cp->mc_head);
- return ret;
-}
-
-
-unsigned int pvr2_channel_get_limited_inputs(struct pvr2_channel *cp)
-{
- return cp->input_mask;
-}
-
-
-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 && 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;
-}
-
-
-// This is the marker for the real beginning of a legitimate mpeg2 stream.
-static char stream_sync_key[] = {
- 0x00, 0x00, 0x01, 0xba,
-};
-
-struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
- struct pvr2_context_stream *sp)
-{
- struct pvr2_ioread *cp;
- cp = pvr2_ioread_create();
- if (!cp) return NULL;
- pvr2_ioread_setup(cp,sp->stream);
- pvr2_ioread_set_sync_key(cp,stream_sync_key,sizeof(stream_sync_key));
- return cp;
-}
-
-
-/*
- 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: ***
- */