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author | Yasunari Takiguchi <Yasunari.Takiguchi@sony.com> | 2018-01-18 03:51:10 -0500 |
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committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-07 04:41:21 -0500 |
commit | aff18712be87c0cfb735037741c0f26da287e10c (patch) | |
tree | 69ab8cd342cdad61f2749e025b2429fcb80812da /drivers/media/dvb-frontends/cxd2880 | |
parent | e5835488c26bec43eb3dea96279b92c573c6f968 (diff) | |
download | linux-aff18712be87c0cfb735037741c0f26da287e10c.tar.gz linux-aff18712be87c0cfb735037741c0f26da287e10c.tar.bz2 linux-aff18712be87c0cfb735037741c0f26da287e10c.zip |
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: 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>
Diffstat (limited to 'drivers/media/dvb-frontends/cxd2880')
-rw-r--r-- | drivers/media/dvb-frontends/cxd2880/cxd2880_integ.c | 72 | ||||
-rw-r--r-- | drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h | 27 |
2 files changed, 99 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 000000000000..5302ab0964c1 --- /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; +} diff --git a/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h b/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h new file mode 100644 index 000000000000..7160225db8b9 --- /dev/null +++ b/drivers/media/dvb-frontends/cxd2880/cxd2880_integ.h @@ -0,0 +1,27 @@ +/* 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 |