From patchwork Sat Jun 1 13:12:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Ciocaltea X-Patchwork-Id: 13682403 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 10042C25B7E for ; Sat, 1 Jun 2024 13:13:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 60AEB10E16E; Sat, 1 Jun 2024 13:13:29 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="Os3q0+lD"; dkim-atps=neutral Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1DDE110E13C for ; Sat, 1 Jun 2024 13:13:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1717247589; bh=tXGwQEVKG8owzD+nYaF701LCWcYEFXnuWBAl5qoYJi8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Os3q0+lDVQX8Rhs8/d7vfoUoZWSWhiY862C5DsyO4LFn0i3Kd0VNcmr79HXiwJQ/E 6jWegpovnwjF8/2eR7vnHvVn5XTMsR5yvytNx6XxV8o5+FgFY4RDwYzSFSbLwYDF54 JTYYqQPfeA4hlJv3xhpKuLEbQFZBshRL3uU0flPxSFQTJOTsIJLTl0zcQcoEsJS7ZU i1rufQaauND0aFv0ktknWd0An0ZbbYnbpolqaJbADBwtS6Q7XfYCD0i7d5ROly8ZRF xaiamkB/FM/OlXrrKqcqK79jDF+cmp4YvpkGLY4kBfZECA2ryI8aKgqgMfmY9Mh9fY JLnYH6ZMOKMew== Received: from localhost (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 672C037821F1; Sat, 1 Jun 2024 13:13:09 +0000 (UTC) From: Cristian Ciocaltea Date: Sat, 01 Jun 2024 16:12:31 +0300 Subject: [PATCH 09/14] drm/rockchip: dw_hdmi: Simplify clock handling MIME-Version: 1.0 Message-Id: <20240601-b4-rk3588-bridge-upstream-v1-9-f6203753232b@collabora.com> References: <20240601-b4-rk3588-bridge-upstream-v1-0-f6203753232b@collabora.com> In-Reply-To: <20240601-b4-rk3588-bridge-upstream-v1-0-f6203753232b@collabora.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mark Yao Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, kernel@collabora.com, Alexandre ARNOUD , Luis de Arquer X-Mailer: b4 0.14-dev-f7c49 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Make use of devm_clk_get_optional_enabled() to replace devm_clk_get() and clk_prepare_enable() for ref_clk and drop the now unnecessary calls to clk_disable_unprepare(). Additionally, use devm_clk_get_optional() helper for grf_clk to replace the open coding call to devm_clk_get() followed by the -ENOENT test. Signed-off-by: Cristian Ciocaltea --- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 38 +++++++++++------------------ 1 file changed, 14 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c index 2509ce19313f..7d07039ef096 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c @@ -209,6 +209,7 @@ static const struct dw_hdmi_phy_config rockchip_phy_config[] = { static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi) { struct device_node *np = hdmi->dev->of_node; + int ret; hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf"); if (IS_ERR(hdmi->regmap)) { @@ -216,25 +217,23 @@ static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi) return PTR_ERR(hdmi->regmap); } - hdmi->ref_clk = devm_clk_get_optional(hdmi->dev, "ref"); + hdmi->ref_clk = devm_clk_get_optional_enabled(hdmi->dev, "ref"); if (!hdmi->ref_clk) - hdmi->ref_clk = devm_clk_get_optional(hdmi->dev, "vpll"); + hdmi->ref_clk = devm_clk_get_optional_enabled(hdmi->dev, "vpll"); - if (PTR_ERR(hdmi->ref_clk) == -EPROBE_DEFER) { - return -EPROBE_DEFER; - } else if (IS_ERR(hdmi->ref_clk)) { - drm_err(hdmi, "failed to get reference clock\n"); - return PTR_ERR(hdmi->ref_clk); + if (IS_ERR(hdmi->ref_clk)) { + ret = PTR_ERR(hdmi->ref_clk); + if (ret != -EPROBE_DEFER) + drm_err(hdmi, "failed to get reference clock\n"); + return ret; } - hdmi->grf_clk = devm_clk_get(hdmi->dev, "grf"); - if (PTR_ERR(hdmi->grf_clk) == -ENOENT) { - hdmi->grf_clk = NULL; - } else if (PTR_ERR(hdmi->grf_clk) == -EPROBE_DEFER) { - return -EPROBE_DEFER; - } else if (IS_ERR(hdmi->grf_clk)) { - drm_err(hdmi, "failed to get grf clock\n"); - return PTR_ERR(hdmi->grf_clk); + hdmi->grf_clk = devm_clk_get_optional(hdmi->dev, "grf"); + if (IS_ERR(hdmi->grf_clk)) { + ret = PTR_ERR(hdmi->grf_clk); + if (ret != -EPROBE_DEFER) + drm_err(hdmi, "failed to get grf clock\n"); + return ret; } hdmi->avdd_0v9 = devm_regulator_get(hdmi->dev, "avdd-0v9"); @@ -615,12 +614,6 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, goto err_avdd_1v8; } - ret = clk_prepare_enable(hdmi->ref_clk); - if (ret) { - drm_err(hdmi, "Failed to enable HDMI reference clock: %d\n", ret); - goto err_clk; - } - if (hdmi->chip_data == &rk3568_chip_data) { regmap_write(hdmi->regmap, RK3568_GRF_VO_CON1, HIWORD_UPDATE(RK3568_HDMI_SDAIN_MSK | @@ -649,8 +642,6 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, err_bind: drm_encoder_cleanup(encoder); - clk_disable_unprepare(hdmi->ref_clk); -err_clk: regulator_disable(hdmi->avdd_1v8); err_avdd_1v8: regulator_disable(hdmi->avdd_0v9); @@ -665,7 +656,6 @@ static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, dw_hdmi_unbind(hdmi->hdmi); drm_encoder_cleanup(&hdmi->encoder.encoder); - clk_disable_unprepare(hdmi->ref_clk); regulator_disable(hdmi->avdd_1v8); regulator_disable(hdmi->avdd_0v9);