From nobody Thu Dec 18 10:02:23 2025 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED9DD22578F; Mon, 17 Feb 2025 15:49:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739807367; cv=none; b=JaxN1rx6BJz4nS6Zwv1YrDFTd6gnO5kUr4cPkD2CCkeKzo2ADglQSKL+Ai3HH5qhqXcPtP/7K7+P2zl80wV/VDv82qv5bcwY3XSrRR8w1JRo6BnI+jmGjWCbWTdOdugTge/CNVXqkQXdg/TOR8NfZnjEItZyaVZsGjsnz9JLXz0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739807367; c=relaxed/simple; bh=6YtIqDQxt7GRfowPju5lJsPbi5k5jOuxltBvNYyf+hg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gi8wyfYigTwHe4nJNTSnhUzwr8CtFuvyQfO9w5qo4AgpmcRqTfM3M3s0hzqk208oMlhNMI0G0CwMjGjy3xD45bqSzlw/PKFv89bh7XdJNk9nWTBLkLG6Vot2ivJKpyibXzC20ZlGktPSMTNRGa5IETPmtGi6OJpSETDGWDqDI9s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=ZtGAbdf3; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="ZtGAbdf3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1739807364; bh=6YtIqDQxt7GRfowPju5lJsPbi5k5jOuxltBvNYyf+hg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZtGAbdf3CW7eX8fq9m+KvKdU4YuJHpzh46zuUXXA9okImtFXYRLSjDbLDjjo7qtqT 4nbQvH+sN3YNOIgCP2Nfdk7CAjOuFnhJ6QYhCK878tjTN0FQztTQfgFQO1IUbyS14S YlQVQNJUNFOYcqqu01UY86rlz4xhmblG2S+ILbnXbRsWElCsjx5uoHqqPuLtiWkmB8 bXMTcRGe0ihH3WvKBRuLFgms15qDCd8n+KLrKxDRFWb+o2kmMPR8hljDCAyMFRGV+A gFyOTKE87vum/drlGNFLGUTh0sTO+uY84nUAbydkbO2srGsuBnpr0LQ46F/+NQh2vK Ds+IilpBLNl+w== Received: from IcarusMOD.eternityproject.eu (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id C9F3917E155A; Mon, 17 Feb 2025 16:49:22 +0100 (CET) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, simona@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, ck.hu@mediatek.com, jitao.shi@mediatek.com, jie.qiu@mediatek.com, junzhi.zhao@mediatek.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, dmitry.baryshkov@linaro.org, lewis.liao@mediatek.com, ives.chenjh@mediatek.com, tommyyl.chen@mediatek.com, jason-jh.lin@mediatek.com Subject: [PATCH v7 05/43] drm/mediatek: mtk_dpi: Add checks for reg_h_fre_con existence Date: Mon, 17 Feb 2025 16:47:58 +0100 Message-ID: <20250217154836.108895-6-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250217154836.108895-1-angelogioacchino.delregno@collabora.com> References: <20250217154836.108895-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In preparation for adding support for newer DPI instances which do support direct-pin but do not have any H_FRE_CON register, like the one found in MT8195 and MT8188, add a branch to check if the reg_h_fre_con variable was declared in the mtk_dpi_conf structure for the probed SoC DPI version. As a note, this is useful specifically only for cases in which the support_direct_pin variable is true, so mt8195-dpintf is not affected by any issue. Reviewed-by: CK Hu Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dpi.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/= mtk_dpi.c index 59c2e4f32a61..bb1a17f1384b 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -431,12 +431,13 @@ static void mtk_dpi_config_swap_input(struct mtk_dpi = *dpi, bool enable) =20 static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi) { - mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N); + if (dpi->conf->reg_h_fre_con) + mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N); } =20 static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi) { - if (dpi->conf->edge_sel_en) + if (dpi->conf->edge_sel_en && dpi->conf->reg_h_fre_con) mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN); } =20 --=20 2.48.1