pinctrl: renesas: rzg2l: Add function pointer for PMC register write

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Introduces pmc_writeb() function pointer, in the struct
rzg2l_pinctrl_data to facilitate writing to the PMC register.  On the
RZ/V2H(P) SoC, unlocking the PWPR.REGWE_A bit before writing to PMC
registers is required, whereas this is not the case for the existing
RZ/G2L family.  This addition enables the reuse of existing code for
RZ/V2H(P).  Additionally, populate this function pointer with
appropriate data for existing SoCs.

Note that this functionality is only handled in rzg2l_gpio_request(), as
PMC unlock/lock during PFC setup will be taken care of in the
pwpr_pfc_lock_unlock() function pointer.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> # on RZ/G3S
Link: https://lore.kernel.org/r/20240530173857.164073-9-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

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Lad Prabhakar 2024-05-30 18:38:50 +01:00 • committed by Geert Uytterhoeven

parent 14c32dc1f6

commit ede014cd1e

1 changed files with 10 additions and 1 deletions

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drivers/pinctrl/renesas/pinctrl-rzg2l.c

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