From patchwork Fri Sep 29 16:19:17 2023 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: 727975 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 62AC2E728CA for ; Fri, 29 Sep 2023 16:19:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233420AbjI2QTe (ORCPT ); Fri, 29 Sep 2023 12:19:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233606AbjI2QTd (ORCPT ); Fri, 29 Sep 2023 12:19:33 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F08A01A4 for ; Fri, 29 Sep 2023 09:19:30 -0700 (PDT) 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 1qmGD6-0007pu-KR; Fri, 29 Sep 2023 18:19:24 +0200 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 1qmGD6-009r5x-7a; Fri, 29 Sep 2023 18:19:24 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qmGD5-00616P-US; Fri, 29 Sep 2023 18:19:23 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Thierry Reding Cc: Krzysztof Kozlowski , Alim Akhtar , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-pwm@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 10/11] pwm: samsung: Consistently use the same name for driver data Date: Fri, 29 Sep 2023 18:19:17 +0200 Message-Id: <20230929161918.2410424-11-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230929161918.2410424-1-u.kleine-koenig@pengutronix.de> References: <20230929161918.2410424-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=11554; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=fvMmapQpvcgi3G1vUj/8AwqFDd99etIhH4g2QOykLb8=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlFvj/gbWXEKrYLjF8TTiGERGR7LleEdpKPyJ21 GR70VSC7PeJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZRb4/wAKCRCPgPtYfRL+ TmwzB/9oYTszR+/WhQ6Z/EgXPHaDf4zLm5s3RpnTocJ3RPgyA3oVnzb4sMX1bIib4JO36SQrOxZ zBrbUm6RoWmIqqY+fve1dJ9f434Y5NEGRM/ctOzOAw2Z7pcwwc7MEmLCaFREZujHDV8eo3hKj/V xjBU7LUzRUIp+UTCzzTUe/4iX4j9FLKA4ek1qB9aSn45OzfB2xCqU+cYNDfJuqtJpnP7qK+X7bE 1fA6MRQrvfOa0HQRhqmwfgkG2oqvFuLAeJHERYZRJqOWj2YNXpMQCq8FfCP5X/knSf3YOYouMcJ DQ1kYMm75NEgwj5zXnwE7tKR00blKodiqt06WT05zFm6NOhK 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-samsung-soc@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org The driver uses mostly "chip" to name samsung_pwm_chip pointers: $ git grep -Pho 'samsung_pwm_chip \*[a-zA-Z0-9_]+(*nla:[a-zA-Z0-9_(])' v6.5-rc1 -- drivers/pwm/pwm-samsung.c | sort | uniq -c 10 samsung_pwm_chip *chip 6 samsung_pwm_chip *our_chip 1 samsung_pwm_chip *pwm However "chip" is supposed to be used for struct pwm_chip pointers and "pwm" for struct pwm_device pointers. So consistently use "our_chip". Signed-off-by: Uwe Kleine-König --- drivers/pwm/pwm-samsung.c | 130 +++++++++++++++++++------------------- 1 file changed, 65 insertions(+), 65 deletions(-) diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c index e8828f57ab15..8d13a05d8d12 100644 --- a/drivers/pwm/pwm-samsung.c +++ b/drivers/pwm/pwm-samsung.c @@ -117,21 +117,21 @@ static inline unsigned int to_tcon_channel(unsigned int channel) return (channel == 0) ? 0 : (channel + 1); } -static void __pwm_samsung_manual_update(struct samsung_pwm_chip *chip, +static void __pwm_samsung_manual_update(struct samsung_pwm_chip *our_chip, struct pwm_device *pwm) { unsigned int tcon_chan = to_tcon_channel(pwm->hwpwm); u32 tcon; - tcon = readl(chip->base + REG_TCON); + tcon = readl(our_chip->base + REG_TCON); tcon |= TCON_MANUALUPDATE(tcon_chan); - writel(tcon, chip->base + REG_TCON); + writel(tcon, our_chip->base + REG_TCON); tcon &= ~TCON_MANUALUPDATE(tcon_chan); - writel(tcon, chip->base + REG_TCON); + writel(tcon, our_chip->base + REG_TCON); } -static void pwm_samsung_set_divisor(struct samsung_pwm_chip *pwm, +static void pwm_samsung_set_divisor(struct samsung_pwm_chip *our_chip, unsigned int channel, u8 divisor) { u8 shift = TCFG1_SHIFT(channel); @@ -139,39 +139,39 @@ static void pwm_samsung_set_divisor(struct samsung_pwm_chip *pwm, u32 reg; u8 bits; - bits = (fls(divisor) - 1) - pwm->variant.div_base; + bits = (fls(divisor) - 1) - our_chip->variant.div_base; spin_lock_irqsave(&samsung_pwm_lock, flags); - reg = readl(pwm->base + REG_TCFG1); + reg = readl(our_chip->base + REG_TCFG1); reg &= ~(TCFG1_MUX_MASK << shift); reg |= bits << shift; - writel(reg, pwm->base + REG_TCFG1); + writel(reg, our_chip->base + REG_TCFG1); spin_unlock_irqrestore(&samsung_pwm_lock, flags); } -static int pwm_samsung_is_tdiv(struct samsung_pwm_chip *chip, unsigned int chan) +static int pwm_samsung_is_tdiv(struct samsung_pwm_chip *our_chip, unsigned int chan) { - struct samsung_pwm_variant *variant = &chip->variant; + struct samsung_pwm_variant *variant = &our_chip->variant; u32 reg; - reg = readl(chip->base + REG_TCFG1); + reg = readl(our_chip->base + REG_TCFG1); reg >>= TCFG1_SHIFT(chan); reg &= TCFG1_MUX_MASK; return (BIT(reg) & variant->tclk_mask) == 0; } -static unsigned long pwm_samsung_get_tin_rate(struct samsung_pwm_chip *chip, +static unsigned long pwm_samsung_get_tin_rate(struct samsung_pwm_chip *our_chip, unsigned int chan) { unsigned long rate; u32 reg; - rate = clk_get_rate(chip->base_clk); + rate = clk_get_rate(our_chip->base_clk); - reg = readl(chip->base + REG_TCFG0); + reg = readl(our_chip->base + REG_TCFG0); if (chan >= 2) reg >>= TCFG0_PRESCALER1_SHIFT; reg &= TCFG0_PRESCALER_MASK; @@ -179,28 +179,28 @@ static unsigned long pwm_samsung_get_tin_rate(struct samsung_pwm_chip *chip, return rate / (reg + 1); } -static unsigned long pwm_samsung_calc_tin(struct samsung_pwm_chip *chip, +static unsigned long pwm_samsung_calc_tin(struct samsung_pwm_chip *our_chip, unsigned int chan, unsigned long freq) { - struct samsung_pwm_variant *variant = &chip->variant; + struct samsung_pwm_variant *variant = &our_chip->variant; unsigned long rate; struct clk *clk; u8 div; - if (!pwm_samsung_is_tdiv(chip, chan)) { - clk = (chan < 2) ? chip->tclk0 : chip->tclk1; + if (!pwm_samsung_is_tdiv(our_chip, chan)) { + clk = (chan < 2) ? our_chip->tclk0 : our_chip->tclk1; if (!IS_ERR(clk)) { rate = clk_get_rate(clk); if (rate) return rate; } - dev_warn(chip->chip.dev, + dev_warn(our_chip->chip.dev, "tclk of PWM %d is inoperational, using tdiv\n", chan); } - rate = pwm_samsung_get_tin_rate(chip, chan); - dev_dbg(chip->chip.dev, "tin parent at %lu\n", rate); + rate = pwm_samsung_get_tin_rate(our_chip, chan); + dev_dbg(our_chip->chip.dev, "tin parent at %lu\n", rate); /* * Compare minimum PWM frequency that can be achieved with possible @@ -220,7 +220,7 @@ static unsigned long pwm_samsung_calc_tin(struct samsung_pwm_chip *chip, div = variant->div_base; } - pwm_samsung_set_divisor(chip, chan, BIT(div)); + pwm_samsung_set_divisor(our_chip, chan, BIT(div)); return rate >> div; } @@ -302,14 +302,14 @@ static void pwm_samsung_disable(struct pwm_chip *chip, struct pwm_device *pwm) spin_unlock_irqrestore(&samsung_pwm_lock, flags); } -static void pwm_samsung_manual_update(struct samsung_pwm_chip *chip, +static void pwm_samsung_manual_update(struct samsung_pwm_chip *our_chip, struct pwm_device *pwm) { unsigned long flags; spin_lock_irqsave(&samsung_pwm_lock, flags); - __pwm_samsung_manual_update(chip, pwm); + __pwm_samsung_manual_update(our_chip, pwm); spin_unlock_irqrestore(&samsung_pwm_lock, flags); } @@ -393,7 +393,7 @@ static int pwm_samsung_config(struct pwm_chip *chip, struct pwm_device *pwm, return __pwm_samsung_config(chip, pwm, duty_ns, period_ns, false); } -static void pwm_samsung_set_invert(struct samsung_pwm_chip *chip, +static void pwm_samsung_set_invert(struct samsung_pwm_chip *our_chip, unsigned int channel, bool invert) { unsigned int tcon_chan = to_tcon_channel(channel); @@ -402,17 +402,17 @@ static void pwm_samsung_set_invert(struct samsung_pwm_chip *chip, spin_lock_irqsave(&samsung_pwm_lock, flags); - tcon = readl(chip->base + REG_TCON); + tcon = readl(our_chip->base + REG_TCON); if (invert) { - chip->inverter_mask |= BIT(channel); + our_chip->inverter_mask |= BIT(channel); tcon |= TCON_INVERT(tcon_chan); } else { - chip->inverter_mask &= ~BIT(channel); + our_chip->inverter_mask &= ~BIT(channel); tcon &= ~TCON_INVERT(tcon_chan); } - writel(tcon, chip->base + REG_TCON); + writel(tcon, our_chip->base + REG_TCON); spin_unlock_irqrestore(&samsung_pwm_lock, flags); } @@ -517,9 +517,9 @@ static const struct of_device_id samsung_pwm_matches[] = { }; MODULE_DEVICE_TABLE(of, samsung_pwm_matches); -static int pwm_samsung_parse_dt(struct samsung_pwm_chip *chip) +static int pwm_samsung_parse_dt(struct samsung_pwm_chip *our_chip) { - struct device_node *np = chip->chip.dev->of_node; + struct device_node *np = our_chip->chip.dev->of_node; const struct of_device_id *match; struct property *prop; const __be32 *cur; @@ -529,22 +529,22 @@ static int pwm_samsung_parse_dt(struct samsung_pwm_chip *chip) if (!match) return -ENODEV; - memcpy(&chip->variant, match->data, sizeof(chip->variant)); + memcpy(&our_chip->variant, match->data, sizeof(our_chip->variant)); of_property_for_each_u32(np, "samsung,pwm-outputs", prop, cur, val) { if (val >= SAMSUNG_PWM_NUM) { - dev_err(chip->chip.dev, + dev_err(our_chip->chip.dev, "%s: invalid channel index in samsung,pwm-outputs property\n", __func__); continue; } - chip->variant.output_mask |= BIT(val); + our_chip->variant.output_mask |= BIT(val); } return 0; } #else -static int pwm_samsung_parse_dt(struct samsung_pwm_chip *chip) +static int pwm_samsung_parse_dt(struct samsung_pwm_chip *our_chip) { return -ENODEV; } @@ -553,21 +553,21 @@ static int pwm_samsung_parse_dt(struct samsung_pwm_chip *chip) static int pwm_samsung_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct samsung_pwm_chip *chip; + struct samsung_pwm_chip *our_chip; unsigned int chan; int ret; - chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); - if (chip == NULL) + our_chip = devm_kzalloc(&pdev->dev, sizeof(*our_chip), GFP_KERNEL); + if (our_chip == NULL) return -ENOMEM; - chip->chip.dev = &pdev->dev; - chip->chip.ops = &pwm_samsung_ops; - chip->chip.npwm = SAMSUNG_PWM_NUM; - chip->inverter_mask = BIT(SAMSUNG_PWM_NUM) - 1; + our_chip->chip.dev = &pdev->dev; + our_chip->chip.ops = &pwm_samsung_ops; + our_chip->chip.npwm = SAMSUNG_PWM_NUM; + our_chip->inverter_mask = BIT(SAMSUNG_PWM_NUM) - 1; if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) { - ret = pwm_samsung_parse_dt(chip); + ret = pwm_samsung_parse_dt(our_chip); if (ret) return ret; } else { @@ -576,58 +576,58 @@ static int pwm_samsung_probe(struct platform_device *pdev) return -EINVAL; } - memcpy(&chip->variant, pdev->dev.platform_data, - sizeof(chip->variant)); + memcpy(&our_chip->variant, pdev->dev.platform_data, + sizeof(our_chip->variant)); } - chip->base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(chip->base)) - return PTR_ERR(chip->base); + our_chip->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(our_chip->base)) + return PTR_ERR(our_chip->base); - chip->base_clk = devm_clk_get(&pdev->dev, "timers"); - if (IS_ERR(chip->base_clk)) { + our_chip->base_clk = devm_clk_get(&pdev->dev, "timers"); + if (IS_ERR(our_chip->base_clk)) { dev_err(dev, "failed to get timer base clk\n"); - return PTR_ERR(chip->base_clk); + return PTR_ERR(our_chip->base_clk); } - ret = clk_prepare_enable(chip->base_clk); + ret = clk_prepare_enable(our_chip->base_clk); if (ret < 0) { dev_err(dev, "failed to enable base clock\n"); return ret; } for (chan = 0; chan < SAMSUNG_PWM_NUM; ++chan) - if (chip->variant.output_mask & BIT(chan)) - pwm_samsung_set_invert(chip, chan, true); + if (our_chip->variant.output_mask & BIT(chan)) + pwm_samsung_set_invert(our_chip, chan, true); /* Following clocks are optional. */ - chip->tclk0 = devm_clk_get(&pdev->dev, "pwm-tclk0"); - chip->tclk1 = devm_clk_get(&pdev->dev, "pwm-tclk1"); + our_chip->tclk0 = devm_clk_get(&pdev->dev, "pwm-tclk0"); + our_chip->tclk1 = devm_clk_get(&pdev->dev, "pwm-tclk1"); - platform_set_drvdata(pdev, chip); + platform_set_drvdata(pdev, our_chip); - ret = pwmchip_add(&chip->chip); + ret = pwmchip_add(&our_chip->chip); if (ret < 0) { dev_err(dev, "failed to register PWM chip\n"); - clk_disable_unprepare(chip->base_clk); + clk_disable_unprepare(our_chip->base_clk); return ret; } dev_dbg(dev, "base_clk at %lu, tclk0 at %lu, tclk1 at %lu\n", - clk_get_rate(chip->base_clk), - !IS_ERR(chip->tclk0) ? clk_get_rate(chip->tclk0) : 0, - !IS_ERR(chip->tclk1) ? clk_get_rate(chip->tclk1) : 0); + clk_get_rate(our_chip->base_clk), + !IS_ERR(our_chip->tclk0) ? clk_get_rate(our_chip->tclk0) : 0, + !IS_ERR(our_chip->tclk1) ? clk_get_rate(our_chip->tclk1) : 0); return 0; } static void pwm_samsung_remove(struct platform_device *pdev) { - struct samsung_pwm_chip *chip = platform_get_drvdata(pdev); + struct samsung_pwm_chip *our_chip = platform_get_drvdata(pdev); - pwmchip_remove(&chip->chip); + pwmchip_remove(&our_chip->chip); - clk_disable_unprepare(chip->base_clk); + clk_disable_unprepare(our_chip->base_clk); } #ifdef CONFIG_PM_SLEEP