| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * cxd2880_integ.c |
| 4 | * Sony CXD2880 DVB-T2/T tuner + demodulator driver |
| 5 | * integration layer common functions |
| 6 | * |
| 7 | * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation |
| 8 | */ |
| 9 | |
| 10 | #include <linux/ktime.h> |
| 11 | #include <linux/errno.h> |
| 12 | |
| 13 | #include "cxd2880_tnrdmd.h" |
| 14 | #include "cxd2880_tnrdmd_mon.h" |
| 15 | #include "cxd2880_integ.h" |
| 16 | |
| 17 | int cxd2880_integ_init(struct cxd2880_tnrdmd *tnr_dmd) |
| 18 | { |
| 19 | int ret; |
| 20 | ktime_t start; |
| 21 | u8 cpu_task_completed = 0; |
| 22 | |
| 23 | if (!tnr_dmd) |
| 24 | return -EINVAL; |
| 25 | |
| 26 | ret = cxd2880_tnrdmd_init1(tnr_dmd); |
| 27 | if (ret) |
| 28 | return ret; |
| 29 | |
| 30 | start = ktime_get(); |
| 31 | |
| 32 | while (1) { |
| 33 | ret = |
| 34 | cxd2880_tnrdmd_check_internal_cpu_status(tnr_dmd, |
| 35 | task_completed: &cpu_task_completed); |
| 36 | if (ret) |
| 37 | return ret; |
| 38 | |
| 39 | if (cpu_task_completed) |
| 40 | break; |
| 41 | |
| 42 | if (ktime_to_ms(ktime_sub(ktime_get(), start)) > |
| 43 | CXD2880_TNRDMD_WAIT_INIT_TIMEOUT) |
| 44 | return -ETIMEDOUT; |
| 45 | |
| 46 | usleep_range(CXD2880_TNRDMD_WAIT_INIT_INTVL, |
| 47 | CXD2880_TNRDMD_WAIT_INIT_INTVL + 1000); |
| 48 | } |
| 49 | |
| 50 | return cxd2880_tnrdmd_init2(tnr_dmd); |
| 51 | } |
| 52 | |
| 53 | int cxd2880_integ_cancel(struct cxd2880_tnrdmd *tnr_dmd) |
| 54 | { |
| 55 | if (!tnr_dmd) |
| 56 | return -EINVAL; |
| 57 | |
| 58 | atomic_set(v: &tnr_dmd->cancel, i: 1); |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | int cxd2880_integ_check_cancellation(struct cxd2880_tnrdmd *tnr_dmd) |
| 64 | { |
| 65 | if (!tnr_dmd) |
| 66 | return -EINVAL; |
| 67 | |
| 68 | if (atomic_read(v: &tnr_dmd->cancel) != 0) |
| 69 | return -ECANCELED; |
| 70 | |
| 71 | return 0; |
| 72 | } |
| 73 |