From patchwork Sat May 25 18:11:31 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Blumenstingl X-Patchwork-Id: 10961035 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DF41C933 for ; Sat, 25 May 2019 18:13:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D0C2928A86 for ; Sat, 25 May 2019 18:13:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C495628A8E; Sat, 25 May 2019 18:13:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 512E728A89 for ; Sat, 25 May 2019 18:13:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=C6g0m60Hb1+RLewOmN4Txap1HlmIKCLfyrME1VYsfQI=; b=l2gGlIb7wolBlP XI8s8D2/HwboJzR/8puqPnzWHuLmThdT/RIbHDdT3VoAfRoWdX+7KEw3OnnPoJGq4qz2x+fWf0fwM ZokahrLltNV2tCxK0ERuTMW5WlNUCuHbyOHcJewJ8+YTtSPCfj+3ooHU4Uzvb+rpo1MhUpevUYoYW Fp/aXVRYr/8U02bJyfBKACbc8srcwQVWAqUaC/IyCYDWVwsifs2ohNv24iIKTcJ7Z+5SMlcaFqp/D MAcNA7N0Z/T2DwZd7vRU8b2Ex66DV26riN0fAQmnuEwOB8WC4MrIJqbdus91p9GVV6NrmIymqdWpO Xt0hiTl1ZQHXEQrYee/Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hUbAd-0004BN-DM; Sat, 25 May 2019 18:13:27 +0000 Received: from mail-wm1-x342.google.com ([2a00:1450:4864:20::342]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hUb9D-0002Qx-La; Sat, 25 May 2019 18:12:02 +0000 Received: by mail-wm1-x342.google.com with SMTP id y3so12354106wmm.2; Sat, 25 May 2019 11:11:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ZZBrfkl16mJlGiWrnZRe//jeJtUZhnRCrg3oI0vNyFI=; b=MgUAmTL4yQFGoNbP7rExFDhLyToEDMu/d0vkne8q//dsS1wVYTc5RZ943WOgq3Wu3D 7C0kJswseNQVZJ10l7h2RMOJqFNusWEqF8YRh94m+J4618+oOsjp0NdVDk7u2auMCgtN KFxgTNGAFTpmEvvvrrGbdZF2B1dnsdByx48ZB3UeKE/okpT5KHo6Lb+BKTAwjkcXbNlj lsXY2Y/aLWsfE0hD0bJ4VdcLwj1GuIvZR+Ap34vgH1GQUXZrWZhQ3pN9RIp4Ad/ziwQQ YcJXBItvX19JiDrTBcOyvStOwsIkpVNbj9PYJqyKUE1FcmWvVo7Ffy/rs0zRN+vqkmEi t/iw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ZZBrfkl16mJlGiWrnZRe//jeJtUZhnRCrg3oI0vNyFI=; b=f3LlOIn+6jLRsnXU3gIIZ7iojUjg7r3WsNUTvPwb5IFmWH9Vb8DbXggushxBUP7HRm usAPFCBcM4fVcflQ0ng4K5BJCq6mPu3WutONG+ouvPXg0MUb/j5IYU79Tc1XOc9XHUWz +vlzS5ZCH2ksRBBDNXhagEMaQSml9890P7NOf019wex/90+41haX1ELrOFd2K9VPAs0P mv6zXYcO70J3FfviPWGxx6kQ8VP3QwYYIR3zspeJ3mCy9DtCI6wd7YPmRKGQ2hNC0Aa3 GOIVX+L8oXRgOKMll4jVx1HYyS9X19mg25ue1YL77tlFtH9MvwstowxYBOLNiZkp66tX FpiA== X-Gm-Message-State: APjAAAXtel6a6NkXthY7XPdPpezd+r5+tKP6ZbhPvX2PAM4ofBgBrk1J LVTRZc9rszreD0S7dUbEyc4q9/oj X-Google-Smtp-Source: APXvYqx7WEtmO5tBGD+Qk0uLxms3RRFGsn/SwE+f+++pGxOUKsvbHBDc+QgOZvlVI410mS9pcBvgSA== X-Received: by 2002:a7b:c4d2:: with SMTP id g18mr21216802wmk.78.1558807917837; Sat, 25 May 2019 11:11:57 -0700 (PDT) Received: from blackbox.darklights.net (p200300F133DDA4007CB8841254CD64FD.dip0.t-ipconnect.de. [2003:f1:33dd:a400:7cb8:8412:54cd:64fd]) by smtp.googlemail.com with ESMTPSA id o8sm12794540wra.4.2019.05.25.11.11.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 25 May 2019 11:11:57 -0700 (PDT) From: Martin Blumenstingl To: linux-amlogic@lists.infradead.org, linux-pwm@vger.kernel.org, thierry.reding@gmail.com, u.kleine-koenig@pengutronix.de Subject: [PATCH 12/14] pwm: meson: don't cache struct pwm_state internally Date: Sat, 25 May 2019 20:11:31 +0200 Message-Id: <20190525181133.4875-13-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190525181133.4875-1-martin.blumenstingl@googlemail.com> References: <20190525181133.4875-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190525_111159_848317_D6C42E43 X-CRM114-Status: GOOD ( 13.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Martin Blumenstingl , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The PWM core already caches the "current struct pwm_state" as the "current state of the hardware registers" inside struct pwm_device. Drop the struct pwm_state from struct meson_pwm_channel in favour of the struct pwm_state in struct pwm_device. While here also drop any checks based on the pwm_state because the PWM core already takes care of this. No functional changes intended. Signed-off-by: Martin Blumenstingl Reviewed-by: Neil Armstrong --- drivers/pwm/pwm-meson.c | 25 +------------------------ 1 file changed, 1 insertion(+), 24 deletions(-) diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c index 010212166d5d..900d362ec3c9 100644 --- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -68,8 +68,6 @@ struct meson_pwm_channel { unsigned int lo; u8 pre_div; - struct pwm_state state; - struct clk *clk_parent; struct clk_mux mux; struct clk *clk; @@ -127,8 +125,6 @@ static int meson_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) return err; } - chip->ops->get_state(chip, pwm, &channel->state); - return pwm_set_chip_data(pwm, channel); } @@ -153,10 +149,6 @@ static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm, if (state->polarity == PWM_POLARITY_INVERSED) duty = period - duty; - if (period == channel->state.period && - duty == channel->state.duty_cycle) - return 0; - fin_freq = clk_get_rate(channel->clk); if (fin_freq == 0) { dev_err(meson->chip.dev, "invalid source clock frequency\n"); @@ -253,7 +245,6 @@ static void meson_pwm_disable(struct meson_pwm *meson, struct pwm_device *pwm) static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, struct pwm_state *state) { - struct meson_pwm_channel *channel = pwm_get_chip_data(pwm); struct meson_pwm *meson = to_meson_pwm(chip); int err = 0; @@ -262,26 +253,12 @@ static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, if (!state->enabled) { meson_pwm_disable(meson, pwm); - channel->state.enabled = false; - - return 0; - } - - if (state->period != channel->state.period || - state->duty_cycle != channel->state.duty_cycle || - state->polarity != channel->state.polarity) { + } else { err = meson_pwm_calc(meson, pwm, state); if (err < 0) return err; - channel->state.polarity = state->polarity; - channel->state.period = state->period; - channel->state.duty_cycle = state->duty_cycle; - } - - if (state->enabled && !channel->state.enabled) { meson_pwm_enable(meson, pwm); - channel->state.enabled = true; } return 0;