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| author | Nuno Sá <nuno.sa@analog.com> | 2021-09-03 17:14:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-14 12:15:58 +0300 |
| commit | d1b73eebc70defee59236a4ae37477d668c7b67b (patch) | |
| tree | 9fa51f122b272a06ec8a8a8864a80de955fce63c /include | |
| parent | 8eb2a679c603a59c7caa3611906597a090001622 (diff) | |
| download | linux-d1b73eebc70defee59236a4ae37477d668c7b67b.tar.xz | |
iio: adis: handle devices that cannot unmask the drdy pin
[ Upstream commit 31fa357ac809affd9f9a7d0b5d1991951e16beec ]
Some devices can't mask/unmask the data ready pin and in those cases
each driver was just calling '{dis}enable_irq()' to control the trigger
state. This change, moves that handling into the library by introducing
a new boolean in the data structure that tells the library that the
device cannot unmask the pin.
On top of controlling the trigger state, we can also use this flag to
automatically request the IRQ with 'IRQF_NO_AUTOEN' in case it is set.
So far, all users of the library want to start operation with IRQs/DRDY
pin disabled so it should be fairly safe to do this inside the library.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210903141423.517028-3-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stable-dep-of: 99c05e4283a1 ("iio: adis: add '__adis_enable_irq()' implementation")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iio/imu/adis.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index 04e96d688ba9..2ced0c88f481 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -49,6 +49,7 @@ struct adis_timeout { * @status_error_mask: Bitmask of errors supported by the device * @timeouts: Chip specific delays * @enable_irq: Hook for ADIS devices that have a special IRQ enable/disable + * @unmasked_drdy: True for devices that cannot mask/unmask the data ready pin * @has_paging: True if ADIS device has paged registers * @burst_reg_cmd: Register command that triggers burst * @burst_len: Burst size in the SPI RX buffer. If @burst_max_len is defined, @@ -77,6 +78,7 @@ struct adis_data { unsigned int status_error_mask; int (*enable_irq)(struct adis *adis, bool enable); + bool unmasked_drdy; bool has_paging; |