rtc: rzn1: use FIELD_PREP/FIELD_GET and GENMASK for register access

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Replace open-coded shift and mask operations with the bitfield API.

Note that the weekday field is changed from an explicit 0x0f mask to
an 8-bit field definition, matching the hardware manual. This does not
change behaviour, as valid weekday values cannot exceed 7.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-15-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Lad Prabhakar 2026-08-21 22:10:29 +01:00 • committed by Alexandre Belloni

parent 0e1ae8c654

commit 5ae93269d3

1 changed files with 28 additions and 22 deletions

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drivers/rtc/rtc-rzn1.c

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