1.Simplify buffer opeations to avoid frequent resize for batch and no-batch mode.
2.When sensor event is first generated, the buffer is initialized.
3.Remove and merge batch_number to buffer_number when device support batch mode.
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
complete the following commits:
commit d87cf8d4ca
Author: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Date: Fri Apr 1 20:59:55 2022 +0800
fs/poll: change format for type pollevent_t
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
commit d535943a69
Author: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Date: Fri Apr 1 17:49:10 2022 +0800
fs/epoll: change type of eventset from uint8_t to uint32_t
to support EPOLLONESHOT and so on.
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Signed-off-by: chao.an <anchao@xiaomi.com>
Some PPG devices have 4 ADCs to output quad-channel PPG values while some of them only have 2 ADCs to output dual-channel PPG.
To deal the case above, the type PPGD(PPG of Dual-channel) takes the place of former type PPG, which also have 2-channel PPG outputs. Type PPGQ (PPG of Quad-channel) is new for 4-ADC-PPG. Both types have contained new data "gain" to indicate ADC gains of each PPG channel, for the reason that the gains may vary during automatical optical adjustments.
Signed-off-by: liucheng5 <liucheng5@xiaomi.com>
1.use userspace buffer rather than intermediate buffer of upperhalf driver
2.support block and non-block ways.
Change-Id: I1d0cecfaa20ce54961c58713d8f2f8857e349791
Signed-off-by: dongjiuzhu <dongjiuzhu1@xiaomi.com>
1.support for multi-user access
2.support special cmd to control sensor
3.support userspace to set size of intermediate buffer
by ioctl: SNOIC_SET_BUFFER_SIZE
Change-Id: I9ce3a65b88b12c28388ec397431f1a277b120c2a
Signed-off-by: dongjiuzhu <dongjiuzhu1@xiaomi.com>
