From patchwork Fri May 20 10:09:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 12856598 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDE10C433FE for ; Fri, 20 May 2022 10:10:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348037AbiETKKY (ORCPT ); Fri, 20 May 2022 06:10:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234933AbiETKKW (ORCPT ); Fri, 20 May 2022 06:10:22 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A8100DFF6A; Fri, 20 May 2022 03:10:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 44B2861CFE; Fri, 20 May 2022 10:10:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92626C36AE3; Fri, 20 May 2022 10:10:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653041420; bh=b5B3dWn6n9Wxng7nBg4KPCY57stZm2SUMOlxnd/cJt8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DDeht8FOFq8hO8w1PZZUlFAGMZjBPOubMjKDjmKbHJu6IkiTaaRuPx98Tg+mqAMUP szPmag55Qof2XpivZOcAujXs0Inu/jN7h3+BwGEU7VKHxNSVcrpK9QEOWGNzQiu94H Vj25DWKdDUHKc9s+DjdGPCqsabrvPZZ4z7fJzmOg8qV+Od0DxH79gTzPnYsEWleupI etyJ+AxawS3VPkAry7uclzUndFIDeHV+fixCkLSaPRKcmFTFbw9jDZ3j/NKfGPkzYU YJpO/GG5H1PlxNjRjed0vJiMqQRUiRPqcauJ25p3fkaq3fnfvf8p43nOI1qgoDr3B2 XxfR34OqYcVYQ== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1nrzaO-00056w-Bg; Fri, 20 May 2022 12:10:20 +0200 From: Johan Hovold To: Bjorn Andersson Cc: Andy Gross , Michael Turquette , Stephen Boyd , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 1/3] clk: qcom: gdsc: add collapse-bit helper Date: Fri, 20 May 2022 12:09:46 +0200 Message-Id: <20220520100948.19622-2-johan+linaro@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220520100948.19622-1-johan+linaro@kernel.org> References: <20220520100948.19622-1-johan+linaro@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add a helper for updating the SW_COLLAPSE bit during initialisation and state updates. Note that the update during initialisation was relying on the SW_COLLAPSE bit not having been set earlier rather than passing in zero explicitly to clear the collapse vote. Signed-off-by: Johan Hovold --- drivers/clk/qcom/gdsc.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c index 44520efc6c72..c676416e685f 100644 --- a/drivers/clk/qcom/gdsc.c +++ b/drivers/clk/qcom/gdsc.c @@ -132,10 +132,24 @@ static int gdsc_poll_status(struct gdsc *sc, enum gdsc_status status) return -ETIMEDOUT; } +static int gdsc_update_collapse_bit(struct gdsc *sc, bool val) +{ + u32 reg, mask; + int ret; + + reg = sc->gdscr; + mask = SW_COLLAPSE_MASK; + + ret = regmap_update_bits(sc->regmap, reg, mask, val ? mask : 0); + if (ret) + return ret; + + return 0; +} + static int gdsc_toggle_logic(struct gdsc *sc, enum gdsc_status status) { int ret; - u32 val = (status == GDSC_ON) ? 0 : SW_COLLAPSE_MASK; if (status == GDSC_ON && sc->rsupply) { ret = regulator_enable(sc->rsupply); @@ -143,9 +157,7 @@ static int gdsc_toggle_logic(struct gdsc *sc, enum gdsc_status status) return ret; } - ret = regmap_update_bits(sc->regmap, sc->gdscr, SW_COLLAPSE_MASK, val); - if (ret) - return ret; + ret = gdsc_update_collapse_bit(sc, status == GDSC_OFF); /* If disabling votable gdscs, don't poll on status */ if ((sc->flags & VOTABLE) && status == GDSC_OFF) { @@ -425,8 +437,7 @@ static int gdsc_init(struct gdsc *sc) * If a Votable GDSC is ON, make sure we have a Vote. */ if (sc->flags & VOTABLE) { - ret = regmap_update_bits(sc->regmap, sc->gdscr, - SW_COLLAPSE_MASK, val); + ret = gdsc_update_collapse_bit(sc, false); if (ret) return ret; }