drm/panthor: Replace cross-component register accesses with helpers

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Stop reaching into other components' registers directly and route those
operations through the component that owns them.

Move the timestamp/coherency helpers into panthor_gpu, add a doorbell
helper, and update call sites accordingly. This keeps register knowledge
local to each block and avoids spreading cross-component register
accesses across the driver.

This is a preparatory cleanup for using per-component iomem bases.

v3:
- Pick up Ack from Boris and R-bs from Liviu and Steve
v2:
- Fix incorrect spelling of timestamp helpers
- Fix unintended trailing backslash

Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Karunika Choo <karunika.choo@arm.com>
Tested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20260427155934.416502-4-karunika.choo@arm.com

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This commit is contained in:

Karunika Choo 2026-04-27 16:59:29 +01:00 • committed by Liviu Dudau

parent 1f0a27ba79

commit 10858b2bd8

8 changed files with 61 additions and 37 deletions

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27

drivers/gpu/drm/panthor/panthor_device.c

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7

drivers/gpu/drm/panthor/panthor_drv.c

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13

drivers/gpu/drm/panthor/panthor_fw.c

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1

drivers/gpu/drm/panthor/panthor_fw.h

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drivers/gpu/drm/panthor/panthor_gpu.c

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6

drivers/gpu/drm/panthor/panthor_gpu.h

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2

drivers/gpu/drm/panthor/panthor_pwr.c

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2

drivers/gpu/drm/panthor/panthor_sched.c

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