[PATCH char-misc-next v2 0/4] issei: runtime power management, dma and in-kernel interface
From: Alexander Usyskin
Date: Sun Oct 18 2026 - 05:32:31 EST
Pack of additions for issei driver:
1. Support for runtime power management
2. Support for DMA allocation on request from client
3. In-kernel interface that allows kernel drivers to communicate directly
with issei.
4. Fix for power down flow
Signed-off-by: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
---
Changes in v2:
- remove the stub helpers in include file (Arnd)
- fix wait_event_interruptible_timeout return value handling (Arnd)
- Link to v1: https://lore.kernel.org/r/20261015-issei_pm_and_itf-v1-0-8212238a57a4@xxxxxxxxx
---
Alexander Usyskin (4):
issei: save power_down flag while processing event
issei: add runtime pm
issei: host_client: add dma allocation support
issei: add driver to driver interface
MAINTAINERS | 1 +
drivers/misc/issei/Makefile | 1 +
drivers/misc/issei/cdev.c | 12 +-
drivers/misc/issei/host_client.c | 70 ++++++++++
drivers/misc/issei/host_client.h | 12 ++
drivers/misc/issei/hw_heci.c | 21 ++-
drivers/misc/issei/issei_dev.h | 3 +
drivers/misc/issei/issei_device.c | 269 ++++++++++++++++++++++++++++++++++++++
drivers/misc/issei/main.c | 233 ++++++++++++++++++---------------
drivers/misc/issei/pci_heci.c | 21 +++
include/linux/issei_device.h | 31 +++++
11 files changed, 560 insertions(+), 114 deletions(-)
---
base-commit: 79e5797d243a466138f641932f81dc69f796060c
change-id: 20261015-issei_pm_and_itf-d1911cd73ec0
Best regards,
--
Alexander Usyskin <alexander.usyskin@xxxxxxxxx>