From nobody Fri Sep 20 14:49:50 2024 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 A1226C001DF for ; Mon, 31 Jul 2023 13:05:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232558AbjGaNFL (ORCPT ); Mon, 31 Jul 2023 09:05:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232114AbjGaNEx (ORCPT ); Mon, 31 Jul 2023 09:04:53 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A56EE10F2 for ; Mon, 31 Jul 2023 06:04:52 -0700 (PDT) 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 madras.collabora.co.uk (Postfix) with ESMTPSA id A87A5660707D; Mon, 31 Jul 2023 14:04:50 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1690808691; bh=0Ced9zHqXOE8csCfTU84KdtIY5YMgWKarAWvRB7Z5c0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XDXUDt7K1kSIaUhC9K1XmvqmJn71QL51mmmpax4Y05DaenmpHtr2DWrDL3lJ3M8xK g0aa/nF3M6ivkC4h9SwMlz3FtdGC1jhYU31Z+GNj8BJapIvG/cgn4CW4oRXNCXEtED qbxGSMhoer24/ljfRR5egiiDfL8LqxBlQTJ6GH+rHnfOBbEvFAStjxJ3E6nGFd4ogx gZfSV8y9WxFoJwVE5mPDjweq2iN4Qj3ES7P+YNS+gmKOpoKKg/jDzaEE/JRDXg7DJ4 gdgnG/Q1/9/w2SxXocGwJ8+myQZ8cLX0HjsaKBMOdhSIfzWGV8e1NHa/Y2RFH/eTjm x9dj8mnZ1tBvw== From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, wenst@chromium.org, kernel@collabora.com, ehristev@collabora.com, "Jason-JH . Lin" , Alexandre Mergnat Subject: [PATCH v7 06/13] drm/mediatek: gamma: Use bitfield macros Date: Mon, 31 Jul 2023 15:04:34 +0200 Message-ID: <20230731130441.173960-7-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230731130441.173960-1-angelogioacchino.delregno@collabora.com> References: <20230731130441.173960-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Make the code more robust and improve readability by using bitfield macros instead of open coding bit operations. While at it, also add a definition for LUT_BITS_DEFAULT. Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Jason-JH.Lin Reviewed-by: Alexandre Mergnat --- drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 41 ++++++++++++++--------- 1 file changed, 26 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/me= diatek/mtk_disp_gamma.c index 18b102bef370..ea91d3619716 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c @@ -3,6 +3,7 @@ * Copyright (c) 2021 MediaTek Inc. */ =20 +#include #include #include #include @@ -21,9 +22,16 @@ #define GAMMA_LUT_EN BIT(1) #define GAMMA_DITHERING BIT(2) #define DISP_GAMMA_SIZE 0x0030 +#define DISP_GAMMA_SIZE_HSIZE GENMASK(28, 16) +#define DISP_GAMMA_SIZE_VSIZE GENMASK(12, 0) #define DISP_GAMMA_LUT 0x0700 =20 +#define DISP_GAMMA_LUT_10BIT_R GENMASK(29, 20) +#define DISP_GAMMA_LUT_10BIT_G GENMASK(19, 10) +#define DISP_GAMMA_LUT_10BIT_B GENMASK(9, 0) + #define LUT_10BIT_MASK 0x03ff +#define LUT_BITS_DEFAULT 10 #define LUT_SIZE_DEFAULT 512 =20 struct mtk_disp_gamma_data { @@ -96,33 +104,33 @@ void mtk_gamma_set_common(struct device *dev, void __i= omem *regs, struct drm_crt for (i =3D 0; i < lut_size; i++) { struct drm_color_lut diff, hwlut; =20 - hwlut.red =3D drm_color_lut_extract(lut[i].red, 10); - hwlut.green =3D drm_color_lut_extract(lut[i].green, 10); - hwlut.blue =3D drm_color_lut_extract(lut[i].blue, 10); + hwlut.red =3D drm_color_lut_extract(lut[i].red, LUT_BITS_DEFAULT); + hwlut.green =3D drm_color_lut_extract(lut[i].green, LUT_BITS_DEFAULT); + hwlut.blue =3D drm_color_lut_extract(lut[i].blue, LUT_BITS_DEFAULT); =20 if (!lut_diff || (i % 2 =3D=3D 0)) { - word =3D hwlut.red << 20 + - hwlut.green << 10 + - hwlut.red; + word =3D FIELD_PREP(DISP_GAMMA_LUT_10BIT_R, hwlut.red); + word |=3D FIELD_PREP(DISP_GAMMA_LUT_10BIT_G, hwlut.green); + word |=3D FIELD_PREP(DISP_GAMMA_LUT_10BIT_B, hwlut.blue); } else { diff.red =3D lut[i].red - lut[i - 1].red; - diff.red =3D drm_color_lut_extract(diff.red, 10); + diff.red =3D drm_color_lut_extract(diff.red, LUT_BITS_DEFAULT); =20 diff.green =3D lut[i].green - lut[i - 1].green; - diff.green =3D drm_color_lut_extract(diff.green, 10); + diff.green =3D drm_color_lut_extract(diff.green, LUT_BITS_DEFAULT); =20 diff.blue =3D lut[i].blue - lut[i - 1].blue; - diff.blue =3D drm_color_lut_extract(diff.blue, 10); + diff.blue =3D drm_color_lut_extract(diff.blue, LUT_BITS_DEFAULT); =20 - word =3D diff.blue << 20 + - diff.green << 10 + - diff.red; + word =3D FIELD_PREP(DISP_GAMMA_LUT_10BIT_R, diff.red); + word |=3D FIELD_PREP(DISP_GAMMA_LUT_10BIT_G, diff.green); + word |=3D FIELD_PREP(DISP_GAMMA_LUT_10BIT_B, diff.blue); } writel(word, (lut_base + i * 4)); } =20 /* Enable the gamma table */ - cfg_val =3D cfg_val | GAMMA_LUT_EN; + cfg_val |=3D FIELD_PREP(GAMMA_LUT_EN, 1); =20 writel(cfg_val, regs + DISP_GAMMA_CFG); } @@ -139,9 +147,12 @@ void mtk_gamma_config(struct device *dev, unsigned int= w, unsigned int bpc, struct cmdq_pkt *cmdq_pkt) { struct mtk_disp_gamma *gamma =3D dev_get_drvdata(dev); + u32 sz; + + sz =3D FIELD_PREP(DISP_GAMMA_SIZE_HSIZE, w); + sz |=3D FIELD_PREP(DISP_GAMMA_SIZE_VSIZE, h); =20 - mtk_ddp_write(cmdq_pkt, h << 16 | w, &gamma->cmdq_reg, gamma->regs, - DISP_GAMMA_SIZE); + mtk_ddp_write(cmdq_pkt, sz, &gamma->cmdq_reg, gamma->regs, DISP_GAMMA_SIZ= E); if (gamma->data && gamma->data->has_dither) mtk_dither_set_common(gamma->regs, &gamma->cmdq_reg, bpc, DISP_GAMMA_CFG, GAMMA_DITHERING, cmdq_pkt); --=20 2.41.0