| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 14 Apr 2017 11:29:59 +0900
From: <Yasunari.Takiguchi@...y.com>
To: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-media@...r.kernel.org>
CC: <tbird20d@...il.com>, <frowand.list@...il.com>,
Yasunari Takiguchi <Yasunari.Takiguchi@...y.com>,
Masayuki Yamamoto <Masayuki.Yamamoto@...y.com>,
Hideki Nozawa <Hideki.Nozawa@...y.com>,
"Kota Yonezawa" <Kota.Yonezawa@...y.com>,
Toshihiko Matsumoto <Toshihiko.Matsumoto@...y.com>,
Satoshi Watanabe <Satoshi.C.Watanabe@...y.com>
Subject: [PATCH v2 07/15] [media] cxd2880: Add integration layer for the driver
From: Yasunari Takiguchi <Yasunari.Takiguchi@...y.com>
These functions monitor the driver and watch for task completion.
This is part of the Sony CXD2880 DVB-T2/T tuner + demodulator driver.
Signed-off-by: Yasunari Takiguchi <Yasunari.Takiguchi@...y.com>
Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@...y.com>
Signed-off-by: Hideki Nozawa <Hideki.Nozawa@...y.com>
Signed-off-by: Kota Yonezawa <Kota.Yonezawa@...y.com>
Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@...y.com>
Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@...y.com>
---
.../media/dvb-frontends/cxd2880/cxd2880_integ.c | 99 ++++++++++++++++++++++
.../media/dvb-frontends/cxd2880/cxd2880_integ.h | 44 ++++++++++
2 files changed, 143 insertions(+)
create mode 100644 drivers/media/dvb-frontends/cxd2880/cxd2880_integ.c
create mode 100644 drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h
diff --git a/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.c b/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.c
new file mode 100644
index 000000000000..5ad6685e2a1d
--- /dev/null
+++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.c
@@ -0,0 +1,99 @@
+/*
+ * cxd2880_integ.c
+ * Sony CXD2880 DVB-T2/T tuner + demodulator driver
+ * integration layer common functions
+ *
+ * Copyright (C) 2016, 2017 Sony Semiconductor Solutions Corporation
+ *
+ * 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; version 2 of the License.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cxd2880_tnrdmd.h"
+#include "cxd2880_tnrdmd_mon.h"
+#include "cxd2880_integ.h"
+
+enum cxd2880_ret cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd)
+{
+ enum cxd2880_ret ret = CXD2880_RESULT_OK;
+ struct cxd2880_stopwatch timer;
+ u32 elapsed_time = 0;
+ u8 cpu_task_completed = 0;
+
+ if (!tnr_dmd)
+ return CXD2880_RESULT_ERROR_ARG;
+
+ ret = cxd2880_tnrdmd_init1(tnr_dmd);
+ if (ret != CXD2880_RESULT_OK)
+ return ret;
+
+ ret = cxd2880_stopwatch_start(&timer);
+ if (ret != CXD2880_RESULT_OK)
+ return ret;
+
+ while (1) {
+ ret = cxd2880_stopwatch_elapsed(&timer, &elapsed_time);
+ if (ret != CXD2880_RESULT_OK)
+ return ret;
+
+ ret =
+ cxd2880_tnrdmd_check_internal_cpu_status(tnr_dmd,
+ &cpu_task_completed);
+ if (ret != CXD2880_RESULT_OK)
+ return ret;
+
+ if (cpu_task_completed)
+ break;
+
+ if (elapsed_time > CXD2880_TNRDMD_WAIT_INIT_TIMEOUT)
+ return CXD2880_RESULT_ERROR_TIMEOUT;
+ ret =
+ cxd2880_stopwatch_sleep(&timer,
+ CXD2880_TNRDMD_WAIT_INIT_INTVL);
+ if (ret != CXD2880_RESULT_OK)
+ return ret;
+ }
+
+ ret = cxd2880_tnrdmd_init2(tnr_dmd);
+ if (ret != CXD2880_RESULT_OK)
+ return ret;
+
+ return CXD2880_RESULT_OK;
+}
+
+enum cxd2880_ret cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd)
+{
+ if (!tnr_dmd)
+ return CXD2880_RESULT_ERROR_ARG;
+
+ cxd2880_atomic_set(&tnr_dmd->cancel, 1);
+
+ return CXD2880_RESULT_OK;
+}
+
+enum cxd2880_ret cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd
+ *tnr_dmd)
+{
+ if (!tnr_dmd)
+ return CXD2880_RESULT_ERROR_ARG;
+
+ if (cxd2880_atomic_read(&tnr_dmd->cancel) != 0)
+ return CXD2880_RESULT_ERROR_CANCEL;
+
+ return CXD2880_RESULT_OK;
+}
diff --git a/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h b/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h
new file mode 100644
index 000000000000..9cfc52dbf9d4
--- /dev/null
+++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h
@@ -0,0 +1,44 @@
+/*
+ * cxd2880_integ.h
+ * Sony CXD2880 DVB-T2/T tuner + demodulator driver
+ * integration layer common interface
+ *
+ * Copyright (C) 2016, 2017 Sony Semiconductor Solutions Corporation
+ *
+ * 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; version 2 of the License.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CXD2880_INTEG_H
+#define CXD2880_INTEG_H
+
+#include "cxd2880_tnrdmd.h"
+
+#define CXD2880_TNRDMD_WAIT_INIT_TIMEOUT 500
+#define CXD2880_TNRDMD_WAIT_INIT_INTVL 10
+
+#define CXD2880_TNRDMD_WAIT_AGC_STABLE 100
+
+enum cxd2880_ret cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd);
+
+enum cxd2880_ret cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd);
+
+enum cxd2880_ret cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd
+ *tnr_dmd);
+
+#endif
--
2.11.0
Powered by blists - more mailing lists