提交 aff18712 编写于 作者: Y Yasunari Takiguchi 提交者: Mauro Carvalho Chehab

media: cxd2880: Add integration layer for the driver

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: NYasunari Takiguchi <Yasunari.Takiguchi@sony.com>
Signed-off-by: NMasayuki Yamamoto <Masayuki.Yamamoto@sony.com>
Signed-off-by: NHideki Nozawa <Hideki.Nozawa@sony.com>
Signed-off-by: NKota Yonezawa <Kota.Yonezawa@sony.com>
Signed-off-by: NToshihiko Matsumoto <Toshihiko.Matsumoto@sony.com>
Signed-off-by: NSatoshi Watanabe <Satoshi.C.Watanabe@sony.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
上级 e5835488
// 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;
}
/* SPDX-License-Identifier: GPL-2.0 */
/*
* cxd2880_integ.h
* Sony CXD2880 DVB-T2/T tuner + demodulator driver
* integration layer common interface
*
* Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
*/
#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
int cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd);
int cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd);
int cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd
*tnr_dmd);
#endif
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