From: Philipp Zabel <p.zabel@pengutronix.de>
To: "Kunihiko Hayashi" <hayashi.kunihiko@socionext.com>,
"Masami Hiramatsu" <mhiramat@kernel.org>,
"Lad Prabhakar" <prabhakar.mahadev-lad.rj@bp.renesas.com>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Uwe Kleine-König" <u.kleine-koenig@baylibre.com>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de,
Philipp Zabel <p.zabel@pengutronix.de>
Subject: [PATCH v2 0/3] reset: Requesting pre-deasserted, auto-reasserting reset controls via devres
Date: Wed, 25 Sep 2024 18:40:08 +0200 [thread overview]
Message-ID: <20240925-reset-get-deasserted-v2-0-b3601bbd0458@pengutronix.de> (raw)
There is a recurring pattern of drivers requesting a reset control and
deasserting the reset during probe, followed by registering a reset
assertion via devm_add_action_or_reset().
We can simplify this by providing devm_reset_control_get_*_deasserted()
helpers that return an already deasserted reset control, similarly to
devm_clk_get_enabled().
This doesn't remove a lot of boilerplate at each instance, but there are
quite a few of them now.
regards
Philipp
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
Changes in v2:
- Clear RESET_CONTROL_FLAGS_BIT_OPTIONAL out of flags.
- Check flags in __of_reset_control_get().
- Fix devm_reset_control_array_get() documentation.
- Clear RESET_CONTROL_FLAGS_BIT_DEASSERTED out of flags.
- Link to v1: https://lore.kernel.org/r/20240621-reset-get-deasserted-v1-0-94ee76fb7b7d@pengutronix.de
---
Philipp Zabel (3):
reset: replace boolean parameters with flags parameter
reset: Add devres helpers to request pre-deasserted reset controls
reset: uniphier-glue: Use devm_reset_control_bulk_get_shared_deasserted()
drivers/reset/core.c | 119 +++++++++++-----
drivers/reset/reset-uniphier-glue.c | 24 +---
include/linux/reset.h | 274 ++++++++++++++++++++++++++++--------
3 files changed, 303 insertions(+), 114 deletions(-)
---
base-commit: 487b1b32e317b85c2948eb4013f3e089a0433d49
change-id: 20240621-reset-get-deasserted-5185a8e4a706
Best regards,
--
Philipp Zabel <p.zabel@pengutronix.de>
next reply other threads:[~2024-09-25 16:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-25 16:40 Philipp Zabel [this message]
2024-09-25 16:40 ` [PATCH v2 1/3] reset: replace boolean parameters with flags parameter Philipp Zabel
2024-09-25 16:40 ` [PATCH v2 2/3] reset: Add devres helpers to request pre-deasserted reset controls Philipp Zabel
2024-09-25 16:40 ` [PATCH v2 3/3] reset: uniphier-glue: Use devm_reset_control_bulk_get_shared_deasserted() Philipp Zabel
2024-09-26 5:57 ` [PATCH v2 0/3] reset: Requesting pre-deasserted, auto-reasserting reset controls via devres Uwe Kleine-König
2024-10-01 15:50 ` Philipp Zabel
2024-10-02 8:42 ` Uwe Kleine-König
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