Add rpmi_event_notification_state enum with disable, enable, and return
current state IDs. Also, add req_state field to rpmi_enable_notification_req
and current_state field to rpmi_enable_notification_resp for RPMI specification
compliance.
Add notification event ID enum and data structures for RPMI Performance
service group events: power change, limit change, and level change.
Signed-off-by: David E. Garcia Porras <david.garcia@aheadcomputing.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260608125257.3220114-4-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Add bit-field defines for the RPMI performance domain attributes flags
and fast-channel attributes flags as specified in the RPMI specification.
These are needed by platform implementations that provide RPMI
performance services (e.g. DVFS controllers).
Also add the missing db_write_value field to
rpmi_perf_get_fast_chn_attr_resp to match the RPMI spec layout.
Signed-off-by: David E. Garcia Porras <david.garcia@aheadcomputing.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260328054347.3706029-5-david.garcia@aheadcomputing.com
Signed-off-by: Anup Patel <anup@brainfault.org>
The reg_stride field represents the address stride in bytes between
consecutive registers. The Linux kernel regmap framework validates
register accesses using IS_ALIGNED(reg, map->reg_stride) as an address
alignment check (drivers/base/regmap/regmap.c). The Linux kernel syscon
driver (drivers/mfd/syscon.c) sets reg_stride directly to reg_io_width:
syscon_config.reg_stride = reg_io_width;
The current OpenSBI code incorrectly multiplies reg_io_width by 8,
converting a byte value to bits. Fix this by using reg_io_width directly
as the stride value, consistent with the Linux kernel.
Fixes: f21d8f7d59 ("lib: utils/regmap: Add simple FDT based syscon regmap driver")
Signed-off-by: David E. Garcia Porras <david.garcia@aheadcomputing.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260403202903.3407945-1-david.garcia@aheadcomputing.com
Signed-off-by: Anup Patel <anup@brainfault.org>
