From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C8EBDDC5 for ; Wed, 25 Sep 2024 16:40:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727282424; cv=none; b=oQGTlZleQnaopbg+HaufuoMYUgLnpiml9ulYUaxoWjCgc4BAe3vg95tHxCIYVw7qnKQTw1jBybMz1qOAThMnv3LAo4njaVNi1l/rwNNN7ms/EbJtISclk08+KbwseSGW9xoVhC+O8EsDjoBQnLpFcuNolyH2BvciI8pYKtnJCEc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727282424; c=relaxed/simple; bh=/J0NACCwzQKpTcnb37RzWHUS/e5Msi7D0szViVVSXEI=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=Ajb97+YCG4x/BsBKcILIYX0bbiQlJLJmMesQlf2caGUDTae9T9omm7TJ/hxtRKmBv2pyPsM0p5sf2y0SE8dptufjvTucnEguHDz/zwDSJOUJ0h32jEpuad8fOjDqB+7pE3HziNZJgsyDN+c9C3b236JBNeaS2VMeJp1KGDRaU2g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1stV3r-00046t-IE; Wed, 25 Sep 2024 18:40:19 +0200 From: Philipp Zabel Subject: [PATCH v2 0/3] reset: Requesting pre-deasserted, auto-reasserting reset controls via devres Date: Wed, 25 Sep 2024 18:40:08 +0200 Message-Id: <20240925-reset-get-deasserted-v2-0-b3601bbd0458@pengutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAOg89GYC/4WNQQ6DIBREr2L+ujRAVGxXvUfjAsuof4MGKLEx3 r3UC3QxizfJm9kpIjAi3audAjJHXnwBfanoNVs/QbArTFrqWrZaiYCIJKYSBxuLneBEo7rGdqi tkS0VdQ0YeTtnn33hmWNawud8yerX/hnMSkhxqwHTjoMZjHus8NM7hcXzdnWg/jiOL5QDzYu9A AAA To: Kunihiko Hayashi , Masami Hiramatsu , Lad Prabhakar , Geert Uytterhoeven , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, Philipp Zabel X-Mailer: b4 0.15-dev-13183 X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::54 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org 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 --- 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