From patchwork Wed Feb 14 09:31:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 13556159 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 03998C48BC4 for ; Wed, 14 Feb 2024 09:36:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DrFiNYwNwtYEeviEGGjELEnekeZW3O9glgv0C83gK7c=; b=rlhJckqHtlApS4 wBeG3R2pBLCRR2n9UlmTv/jaeH+Q/UmirQCYqxGB7SIG2oFK/gHN6djNiNHDxHYXWY9BqzPHKcFBH OFLeLd57tcKXhQgdCUaRruFtwUqg5kAZrSCgvq+NQVoh3+O36CkNJYImRPSETSzBVjug53lZPCBau Nd1UpUI80A1viQp4DiUSuZHG2zuySWG/2gzsW2dArZRR14wnZEQO+1CCDr2E7k0bPZMNOGZd0Ntsa P25E9pWrCNEf/wTFUl5PHOXPkvk/aQgA2oL+pH7KfOhzd4Rnnd0Vi+W23uJVsG7BKyHowRFICj3Js Skvt8XOWpeW0ZcZL78JQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1raBgh-0000000CLrL-3oJF; Wed, 14 Feb 2024 09:36:19 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1raBf3-0000000CKLG-3eQu for linux-arm-kernel@lists.infradead.org; Wed, 14 Feb 2024 09:34:41 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1raBew-00055O-EF; Wed, 14 Feb 2024 10:34:30 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1raBeu-000fD6-Pq; Wed, 14 Feb 2024 10:34:28 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1raBeu-004Y4V-2J; Wed, 14 Feb 2024 10:34:28 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Neil Armstrong , Kevin Hilman , linux-pwm@vger.kernel.org Cc: Jerome Brunet , Martin Blumenstingl , linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, kernel@pengutronix.de Subject: [PATCH v6 070/164] pwm: meson: Change prototype of a few helpers to prepare further changes Date: Wed, 14 Feb 2024 10:31:57 +0100 Message-ID: <157084e1dd464da0097edba880240868c1c0b27e.1707900770.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=5267; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=nznIKwEERklBb4k0h0BWwYopUbH9um6rOZd4hcpdvBU=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlzIibWWdmu8Q5kvUUWYhyG+ileLxF6l3vdzMDq u/Wqi6F21GJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZcyImwAKCRCPgPtYfRL+ TinEB/4xcfRCnc2talpzXOwvLODJTjeujAtEQebuBJzt55qg4FEDblt4tc7gPlSJNJeC3Ym2m7N 8WzwcVRazbk/Jwgn0IxYnKxegjWXQ6FP5wYfT98HJwDf3Gn6F0yX42PQyyES3/yazzWh0/UVP9j qBU9GvzFA9a8HlHj5Dqb7lE8itCsu+4ixOIciZ+PHUJB0GTj0kxuyfM9da0Ygdhk8o6S7JBmjVQ xMhf4yE0LYPC8SbHrNrZAhvkn8YqaszeH5rKCc+mwQMUJbYxLKAmEaxpj2S/XdwTfqH6VJHmoWA ItWZ4qlj0cPhUIR78wDVgjvJ0aGhTzicZm51GoxVap4TP1N2 X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240214_013438_174494_180F3FFB X-CRM114-Status: GOOD ( 18.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This prepares the driver for further changes that will make it harder to determine the pwm_chip from a given meson_pwm. To just not have to do that, rework meson_pwm_calc(), meson_pwm_enable(), meson_pwm_disable() and meson_pwm_init_channels() to take a pwm_chip. Signed-off-by: Uwe Kleine-König --- drivers/pwm/pwm-meson.c | 38 +++++++++++++++++++++----------------- 1 file changed, 21 insertions(+), 17 deletions(-) diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c index 2971bbf3b5e7..7ce41811537d 100644 --- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -143,9 +143,10 @@ static void meson_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm) clk_disable_unprepare(channel->clk); } -static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm, +static int meson_pwm_calc(struct pwm_chip *chip, struct pwm_device *pwm, const struct pwm_state *state) { + struct meson_pwm *meson = to_meson_pwm(chip); struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm]; unsigned int cnt, duty_cnt; unsigned long fin_freq; @@ -169,19 +170,19 @@ static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm, fin_freq = clk_round_rate(channel->clk, freq); if (fin_freq == 0) { - dev_err(meson->chip.dev, "invalid source clock frequency\n"); + dev_err(chip->dev, "invalid source clock frequency\n"); return -EINVAL; } - dev_dbg(meson->chip.dev, "fin_freq: %lu Hz\n", fin_freq); + dev_dbg(chip->dev, "fin_freq: %lu Hz\n", fin_freq); cnt = div_u64(fin_freq * period, NSEC_PER_SEC); if (cnt > 0xffff) { - dev_err(meson->chip.dev, "unable to get period cnt\n"); + dev_err(chip->dev, "unable to get period cnt\n"); return -EINVAL; } - dev_dbg(meson->chip.dev, "period=%llu cnt=%u\n", period, cnt); + dev_dbg(chip->dev, "period=%llu cnt=%u\n", period, cnt); if (duty == period) { channel->hi = cnt; @@ -192,7 +193,7 @@ static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm, } else { duty_cnt = div_u64(fin_freq * duty, NSEC_PER_SEC); - dev_dbg(meson->chip.dev, "duty=%llu duty_cnt=%u\n", duty, duty_cnt); + dev_dbg(chip->dev, "duty=%llu duty_cnt=%u\n", duty, duty_cnt); channel->hi = duty_cnt; channel->lo = cnt - duty_cnt; @@ -203,8 +204,9 @@ static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm, return 0; } -static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm) +static void meson_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) { + struct meson_pwm *meson = to_meson_pwm(chip); struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm]; struct meson_pwm_channel_data *channel_data; unsigned long flags; @@ -215,7 +217,7 @@ static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm) err = clk_set_rate(channel->clk, channel->rate); if (err) - dev_err(meson->chip.dev, "setting clock rate failed\n"); + dev_err(chip->dev, "setting clock rate failed\n"); spin_lock_irqsave(&meson->lock, flags); @@ -230,8 +232,9 @@ static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm) spin_unlock_irqrestore(&meson->lock, flags); } -static void meson_pwm_disable(struct meson_pwm *meson, struct pwm_device *pwm) +static void meson_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) { + struct meson_pwm *meson = to_meson_pwm(chip); unsigned long flags; u32 value; @@ -269,16 +272,16 @@ static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, channel->hi = ~0; channel->lo = 0; - meson_pwm_enable(meson, pwm); + meson_pwm_enable(chip, pwm); } else { - meson_pwm_disable(meson, pwm); + meson_pwm_disable(chip, pwm); } } else { - err = meson_pwm_calc(meson, pwm, state); + err = meson_pwm_calc(chip, pwm, state); if (err < 0) return err; - meson_pwm_enable(meson, pwm); + meson_pwm_enable(chip, pwm); } return 0; @@ -432,10 +435,11 @@ static const struct of_device_id meson_pwm_matches[] = { }; MODULE_DEVICE_TABLE(of, meson_pwm_matches); -static int meson_pwm_init_channels(struct meson_pwm *meson) +static int meson_pwm_init_channels(struct pwm_chip *chip) { + struct meson_pwm *meson = to_meson_pwm(chip); struct clk_parent_data mux_parent_data[MESON_MAX_MUX_PARENTS] = {}; - struct device *dev = meson->chip.dev; + struct device *dev = chip->dev; unsigned int i; char name[255]; int err; @@ -445,7 +449,7 @@ static int meson_pwm_init_channels(struct meson_pwm *meson) mux_parent_data[i].name = meson->data->parent_names[i]; } - for (i = 0; i < meson->chip.npwm; i++) { + for (i = 0; i < chip->npwm; i++) { struct meson_pwm_channel *channel = &meson->channels[i]; struct clk_parent_data div_parent = {}, gate_parent = {}; struct clk_init_data init = {}; @@ -543,7 +547,7 @@ static int meson_pwm_probe(struct platform_device *pdev) meson->data = of_device_get_match_data(&pdev->dev); - err = meson_pwm_init_channels(meson); + err = meson_pwm_init_channels(&meson->chip); if (err < 0) return err;