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-rw-r--r--drivers/media/dvb-frontends/cxd2880/cxd2880_integ.c72
1 files changed, 72 insertions, 0 deletions
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 000000000..5302ab096
--- /dev/null
+++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * cxd2880_integ.c
+ * Sony CXD2880 DVB-T2/T tuner + demodulator driver
+ * integration layer common functions
+ *
+ * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
+ */
+
+#include <linux/ktime.h>
+#include <linux/errno.h>
+
+#include "cxd2880_tnrdmd.h"
+#include "cxd2880_tnrdmd_mon.h"
+#include "cxd2880_integ.h"
+
+int cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd)
+{
+ int ret;
+ ktime_t start;
+ u8 cpu_task_completed = 0;
+
+ if (!tnr_dmd)
+ return -EINVAL;
+
+ ret = cxd2880_tnrdmd_init1(tnr_dmd);
+ if (ret)
+ return ret;
+
+ start = ktime_get();
+
+ while (1) {
+ ret =
+ cxd2880_tnrdmd_check_internal_cpu_status(tnr_dmd,
+ &cpu_task_completed);
+ if (ret)
+ return ret;
+
+ if (cpu_task_completed)
+ break;
+
+ if (ktime_to_ms(ktime_sub(ktime_get(), start)) >
+ CXD2880_TNRDMD_WAIT_INIT_TIMEOUT)
+ return -ETIMEDOUT;
+
+ usleep_range(CXD2880_TNRDMD_WAIT_INIT_INTVL,
+ CXD2880_TNRDMD_WAIT_INIT_INTVL + 1000);
+ }
+
+ return cxd2880_tnrdmd_init2(tnr_dmd);
+}
+
+int cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd)
+{
+ if (!tnr_dmd)
+ return -EINVAL;
+
+ atomic_set(&tnr_dmd->cancel, 1);
+
+ return 0;
+}
+
+int cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd *tnr_dmd)
+{
+ if (!tnr_dmd)
+ return -EINVAL;
+
+ if (atomic_read(&tnr_dmd->cancel) != 0)
+ return -ECANCELED;
+
+ return 0;
+}