aff18712be
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@sony.com> Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@sony.com> Signed-off-by: Hideki Nozawa <Hideki.Nozawa@sony.com> Signed-off-by: Kota Yonezawa <Kota.Yonezawa@sony.com> Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@sony.com> Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@sony.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* cxd2880_integ.c
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* Sony CXD2880 DVB-T2/T tuner + demodulator driver
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* integration layer common functions
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*
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* Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
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*/
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#include <linux/ktime.h>
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#include <linux/errno.h>
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#include "cxd2880_tnrdmd.h"
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#include "cxd2880_tnrdmd_mon.h"
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#include "cxd2880_integ.h"
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int cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd)
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{
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int ret;
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ktime_t start;
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u8 cpu_task_completed = 0;
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if (!tnr_dmd)
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return -EINVAL;
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ret = cxd2880_tnrdmd_init1(tnr_dmd);
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if (ret)
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return ret;
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start = ktime_get();
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while (1) {
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ret =
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cxd2880_tnrdmd_check_internal_cpu_status(tnr_dmd,
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&cpu_task_completed);
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if (ret)
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return ret;
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if (cpu_task_completed)
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break;
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if (ktime_to_ms(ktime_sub(ktime_get(), start)) >
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CXD2880_TNRDMD_WAIT_INIT_TIMEOUT)
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return -ETIMEDOUT;
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usleep_range(CXD2880_TNRDMD_WAIT_INIT_INTVL,
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CXD2880_TNRDMD_WAIT_INIT_INTVL + 1000);
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}
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return cxd2880_tnrdmd_init2(tnr_dmd);
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}
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int cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd)
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{
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if (!tnr_dmd)
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return -EINVAL;
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atomic_set(&tnr_dmd->cancel, 1);
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return 0;
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}
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int cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd *tnr_dmd)
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{
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if (!tnr_dmd)
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return -EINVAL;
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if (atomic_read(&tnr_dmd->cancel) != 0)
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return -ECANCELED;
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return 0;
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}
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