From patchwork Thu Sep 19 22:49:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sam Shih X-Patchwork-Id: 1164943 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46ZBsJ4s0zz9s00 for ; Fri, 20 Sep 2019 08:51:00 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406102AbfISWu6 (ORCPT ); Thu, 19 Sep 2019 18:50:58 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:44571 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2405993AbfISWu6 (ORCPT ); Thu, 19 Sep 2019 18:50:58 -0400 X-UUID: 19698585cde6409181c4492fca9bcf60-20190920 X-UUID: 19698585cde6409181c4492fca9bcf60-20190920 Received: from mtkcas09.mediatek.inc [(172.21.101.178)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1610672450; Fri, 20 Sep 2019 06:50:51 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 20 Sep 2019 06:50:49 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 20 Sep 2019 06:50:46 +0800 From: Sam Shih To: Rob Herring , Mark Rutland , Matthias Brugger , Thierry Reding CC: Ryder Lee , John Crispin , , , , , Sam Shih Subject: [PATCH v9 05/11] pwm: mediatek: use pwm_mediatek as common prefix Date: Fri, 20 Sep 2019 06:49:05 +0800 Message-ID: <1568933351-8584-6-git-send-email-sam.shih@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1568933351-8584-1-git-send-email-sam.shih@mediatek.com> References: <1568933351-8584-1-git-send-email-sam.shih@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org Use pwm_mediatek as common prefix to match the filename. No functional change intended. Signed-off-by: Ryder Lee Signed-off-by: Sam Shih Acked-by: Uwe Kleine-König --- Changes since v6: Add an Acked-by tag Changes since v5: - Follow reviewers's comments The license stuff is a separate change --- drivers/pwm/pwm-mediatek.c | 116 +++++++++++++++++++------------------ 1 file changed, 59 insertions(+), 57 deletions(-) diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c index c234b8fa65e7..d2e0f4692de1 100644 --- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -34,14 +34,13 @@ #define PWM45THRES_FIXUP 0x34 #define PWM_CLK_DIV_MAX 7 - -struct mtk_pwm_platform_data { +struct pwm_mediatek_of_data { unsigned int fallback_npwms; bool pwm45_fixup; }; /** - * struct mtk_pwm_chip - struct representing PWM chip + * struct pwm_mediatek_chip - struct representing PWM chip * @chip: linux PWM chip representation * @regs: base address of PWM chip * @clk_top: the top clock generator @@ -49,27 +48,29 @@ struct mtk_pwm_platform_data { * @clk_pwms: the clock used by each PWM channel * @clk_freq: the fix clock frequency of legacy MIPS SoC */ -struct mtk_pwm_chip { +struct pwm_mediatek_chip { struct pwm_chip chip; void __iomem *regs; struct clk *clk_top; struct clk *clk_main; struct clk **clk_pwms; - const struct mtk_pwm_platform_data *soc; + const struct pwm_mediatek_of_data *soc; }; -static const unsigned int mtk_pwm_reg_offset[] = { +static const unsigned int pwm_mediatek_reg_offset[] = { 0x0010, 0x0050, 0x0090, 0x00d0, 0x0110, 0x0150, 0x0190, 0x0220 }; -static inline struct mtk_pwm_chip *to_mtk_pwm_chip(struct pwm_chip *chip) +static inline struct pwm_mediatek_chip * +to_pwm_mediatek_chip(struct pwm_chip *chip) { - return container_of(chip, struct mtk_pwm_chip, chip); + return container_of(chip, struct pwm_mediatek_chip, chip); } -static int mtk_pwm_clk_enable(struct pwm_chip *chip, struct pwm_device *pwm) +static int pwm_mediatek_clk_enable(struct pwm_chip *chip, + struct pwm_device *pwm) { - struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); + struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); int ret; ret = clk_prepare_enable(pc->clk_top); @@ -94,45 +95,46 @@ static int mtk_pwm_clk_enable(struct pwm_chip *chip, struct pwm_device *pwm) return ret; } -static void mtk_pwm_clk_disable(struct pwm_chip *chip, struct pwm_device *pwm) +static void pwm_mediatek_clk_disable(struct pwm_chip *chip, + struct pwm_device *pwm) { - struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); + struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); clk_disable_unprepare(pc->clk_pwms[pwm->hwpwm]); clk_disable_unprepare(pc->clk_main); clk_disable_unprepare(pc->clk_top); } -static inline u32 mtk_pwm_readl(struct mtk_pwm_chip *chip, unsigned int num, - unsigned int offset) +static inline u32 pwm_mediatek_readl(struct pwm_mediatek_chip *chip, + unsigned int num, unsigned int offset) { - return readl(chip->regs + mtk_pwm_reg_offset[num] + offset); + return readl(chip->regs + pwm_mediatek_reg_offset[num] + offset); } -static inline void mtk_pwm_writel(struct mtk_pwm_chip *chip, - unsigned int num, unsigned int offset, - u32 value) +static inline void pwm_mediatek_writel(struct pwm_mediatek_chip *chip, + unsigned int num, unsigned int offset, + u32 value) { - writel(value, chip->regs + mtk_pwm_reg_offset[num] + offset); + writel(value, chip->regs + pwm_mediatek_reg_offset[num] + offset); } -static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, - int duty_ns, int period_ns) +static int pwm_mediatek_config(struct pwm_chip *chip, struct pwm_device *pwm, + int duty_ns, int period_ns) { - struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); - struct clk *clk = pc->clk_pwms[pwm->hwpwm]; + struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); u32 clkdiv = 0, cnt_period, cnt_duty, reg_width = PWMDWIDTH, reg_thres = PWMTHRES; u64 resolution; int ret; - ret = mtk_pwm_clk_enable(chip, pwm); + ret = pwm_mediatek_clk_enable(chip, pwm); + if (ret < 0) return ret; /* Using resolution in picosecond gets accuracy higher */ resolution = (u64)NSEC_PER_SEC * 1000; - do_div(resolution, clk_get_rate(clk)); + do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm])); cnt_period = DIV_ROUND_CLOSEST_ULL((u64)period_ns * 1000, resolution); while (cnt_period > 8191) { @@ -143,7 +145,7 @@ static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, } if (clkdiv > PWM_CLK_DIV_MAX) { - mtk_pwm_clk_disable(chip, pwm); + pwm_mediatek_clk_disable(chip, pwm); dev_err(chip->dev, "period %d not supported\n", period_ns); return -EINVAL; } @@ -158,22 +160,22 @@ static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, } cnt_duty = DIV_ROUND_CLOSEST_ULL((u64)duty_ns * 1000, resolution); - mtk_pwm_writel(pc, pwm->hwpwm, PWMCON, BIT(15) | clkdiv); - mtk_pwm_writel(pc, pwm->hwpwm, reg_width, cnt_period); - mtk_pwm_writel(pc, pwm->hwpwm, reg_thres, cnt_duty); + pwm_mediatek_writel(pc, pwm->hwpwm, PWMCON, BIT(15) | clkdiv); + pwm_mediatek_writel(pc, pwm->hwpwm, reg_width, cnt_period); + pwm_mediatek_writel(pc, pwm->hwpwm, reg_thres, cnt_duty); - mtk_pwm_clk_disable(chip, pwm); + pwm_mediatek_clk_disable(chip, pwm); return 0; } -static int mtk_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) +static int pwm_mediatek_enable(struct pwm_chip *chip, struct pwm_device *pwm) { - struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); + struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); u32 value; int ret; - ret = mtk_pwm_clk_enable(chip, pwm); + ret = pwm_mediatek_clk_enable(chip, pwm); if (ret < 0) return ret; @@ -184,29 +186,29 @@ static int mtk_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) return 0; } -static void mtk_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) +static void pwm_mediatek_disable(struct pwm_chip *chip, struct pwm_device *pwm) { - struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); + struct pwm_mediatek_chip *pc = to_pwm_mediatek_chip(chip); u32 value; value = readl(pc->regs); value &= ~BIT(pwm->hwpwm); writel(value, pc->regs); - mtk_pwm_clk_disable(chip, pwm); + pwm_mediatek_clk_disable(chip, pwm); } -static const struct pwm_ops mtk_pwm_ops = { - .config = mtk_pwm_config, - .enable = mtk_pwm_enable, - .disable = mtk_pwm_disable, +static const struct pwm_ops pwm_mediatek_ops = { + .config = pwm_mediatek_config, + .enable = pwm_mediatek_enable, + .disable = pwm_mediatek_disable, .owner = THIS_MODULE, }; -static int mtk_pwm_probe(struct platform_device *pdev) +static int pwm_mediatek_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; - struct mtk_pwm_chip *pc; + struct pwm_mediatek_chip *pc; struct resource *res; unsigned int npwms; int ret; @@ -268,7 +270,7 @@ static int mtk_pwm_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pc); pc->chip.dev = &pdev->dev; - pc->chip.ops = &mtk_pwm_ops; + pc->chip.ops = &pwm_mediatek_ops; pc->chip.base = -1; pc->chip.npwm = npwms; @@ -281,51 +283,51 @@ static int mtk_pwm_probe(struct platform_device *pdev) return 0; } -static int mtk_pwm_remove(struct platform_device *pdev) +static int pwm_mediatek_remove(struct platform_device *pdev) { - struct mtk_pwm_chip *pc = platform_get_drvdata(pdev); + struct pwm_mediatek_chip *pc = platform_get_drvdata(pdev); return pwmchip_remove(&pc->chip); } -static const struct mtk_pwm_platform_data mt2712_pwm_data = { +static const struct pwm_mediatek_of_data mt2712_pwm_data = { .fallback_npwms = 8, .pwm45_fixup = false, }; -static const struct mtk_pwm_platform_data mt7622_pwm_data = { +static const struct pwm_mediatek_of_data mt7622_pwm_data = { .fallback_npwms = 6, .pwm45_fixup = false, }; -static const struct mtk_pwm_platform_data mt7623_pwm_data = { +static const struct pwm_mediatek_of_data mt7623_pwm_data = { .fallback_npwms = 5, .pwm45_fixup = true, }; -static const struct mtk_pwm_platform_data mt7628_pwm_data = { +static const struct pwm_mediatek_of_data mt7628_pwm_data = { .fallback_npwms = 4, .pwm45_fixup = true, }; -static const struct of_device_id mtk_pwm_of_match[] = { +static const struct of_device_id pwm_mediatek_of_match[] = { { .compatible = "mediatek,mt2712-pwm", .data = &mt2712_pwm_data }, { .compatible = "mediatek,mt7622-pwm", .data = &mt7622_pwm_data }, { .compatible = "mediatek,mt7623-pwm", .data = &mt7623_pwm_data }, { .compatible = "mediatek,mt7628-pwm", .data = &mt7628_pwm_data }, { }, }; -MODULE_DEVICE_TABLE(of, mtk_pwm_of_match); +MODULE_DEVICE_TABLE(of, pwm_mediatek_of_match); -static struct platform_driver mtk_pwm_driver = { +static struct platform_driver pwm_mediatek_driver = { .driver = { - .name = "mtk-pwm", - .of_match_table = mtk_pwm_of_match, + .name = "pwm-mediatek", + .of_match_table = pwm_mediatek_of_match, }, - .probe = mtk_pwm_probe, - .remove = mtk_pwm_remove, + .probe = pwm_mediatek_probe, + .remove = pwm_mediatek_remove, }; -module_platform_driver(mtk_pwm_driver); +module_platform_driver(pwm_mediatek_driver); MODULE_AUTHOR("John Crispin "); MODULE_LICENSE("GPL");