// 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; }