From nobody Fri Sep 20 18:43:31 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 C4273C7EE23 for ; Mon, 12 Jun 2023 09:06:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230156AbjFLJGA (ORCPT ); Mon, 12 Jun 2023 05:06:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232978AbjFLJFZ (ORCPT ); Mon, 12 Jun 2023 05:05:25 -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 A791E3C0E for ; Mon, 12 Jun 2023 02:02:05 -0700 (PDT) Received: from IcarusMOD.eternityproject.eu (unknown [IPv6:2001:b07:2ed:14ed:c5f8:7372:f042:90a2]) (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 9DC226606E98; Mon, 12 Jun 2023 10:02:03 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1686560524; bh=H1IjE6ks2/tQ62I5k+mdDy0LWtBtFX34NVlBCrVhdQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aY658Q+0Pi1xzDSNlEuUHVLmbLxgSQzTuQ1rn4R9okTSDsKzZcjtMgyKxKNrxIBmb SeL9adZxHbCIHp4YIplc2SBlGGUSJrIF4vWoHTBwD7XpoSyNJSShL/byRlgLFwFCJt q/1HHD8rdCMbbGAWSw2PVb835Nf2G1J4s1L+sgz0iEZm8XMUEksUod6dUo+JwI3kVL eKIEbITYzKrz3e7D3LOPTXOcQEVGtoBSrTaFBG9mpf+W33lMs4A5ZPS1c13lpFK/EH X3VRzfq6ly881hcHDyemwEXJadguxj2ONDcOIpHSdlOu5iSp9i2r5bT3xPWKR/kzJL KvqSS5oVCJLOw== 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, "Jason-JH . Lin" Subject: [PATCH v6 02/11] drm/mediatek: gamma: Reduce indentation in mtk_gamma_set_common() Date: Mon, 12 Jun 2023 11:01:48 +0200 Message-Id: <20230612090157.68205-3-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230612090157.68205-1-angelogioacchino.delregno@collabora.com> References: <20230612090157.68205-1-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" Invert the check for state->gamma_lut and move it at the beginning of the function to reduce indentation: this prepares the code for keeping readability on later additions. This commit brings no functional changes. Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Jason-JH.Lin --- drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 45 ++++++++++++----------- 1 file changed, 23 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/me= diatek/mtk_disp_gamma.c index 99be515a941b..ce6f2499b891 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c @@ -65,34 +65,35 @@ void mtk_gamma_set_common(struct device *dev, void __io= mem *regs, struct drm_crt u32 word; u32 diff[3] =3D {0}; =20 + /* If there's no gamma lut there's nothing to do here. */ + if (!state->gamma_lut) + return; + if (gamma && gamma->data) lut_diff =3D gamma->data->lut_diff; else lut_diff =3D false; =20 - if (state->gamma_lut) { - reg =3D readl(regs + DISP_GAMMA_CFG); - reg =3D reg | GAMMA_LUT_EN; - writel(reg, regs + DISP_GAMMA_CFG); - lut_base =3D regs + DISP_GAMMA_LUT; - lut =3D (struct drm_color_lut *)state->gamma_lut->data; - for (i =3D 0; i < MTK_LUT_SIZE; i++) { - - if (!lut_diff || (i % 2 =3D=3D 0)) { - word =3D (((lut[i].red >> 6) & LUT_10BIT_MASK) << 20) + - (((lut[i].green >> 6) & LUT_10BIT_MASK) << 10) + - ((lut[i].blue >> 6) & LUT_10BIT_MASK); - } else { - diff[0] =3D (lut[i].red >> 6) - (lut[i - 1].red >> 6); - diff[1] =3D (lut[i].green >> 6) - (lut[i - 1].green >> 6); - diff[2] =3D (lut[i].blue >> 6) - (lut[i - 1].blue >> 6); - - word =3D ((diff[0] & LUT_10BIT_MASK) << 20) + - ((diff[1] & LUT_10BIT_MASK) << 10) + - (diff[2] & LUT_10BIT_MASK); - } - writel(word, (lut_base + i * 4)); + reg =3D readl(regs + DISP_GAMMA_CFG); + reg =3D reg | GAMMA_LUT_EN; + writel(reg, regs + DISP_GAMMA_CFG); + lut_base =3D regs + DISP_GAMMA_LUT; + lut =3D (struct drm_color_lut *)state->gamma_lut->data; + for (i =3D 0; i < MTK_LUT_SIZE; i++) { + if (!lut_diff || (i % 2 =3D=3D 0)) { + word =3D (((lut[i].red >> 6) & LUT_10BIT_MASK) << 20) + + (((lut[i].green >> 6) & LUT_10BIT_MASK) << 10) + + ((lut[i].blue >> 6) & LUT_10BIT_MASK); + } else { + diff[0] =3D (lut[i].red >> 6) - (lut[i - 1].red >> 6); + diff[1] =3D (lut[i].green >> 6) - (lut[i - 1].green >> 6); + diff[2] =3D (lut[i].blue >> 6) - (lut[i - 1].blue >> 6); + + word =3D ((diff[0] & LUT_10BIT_MASK) << 20) + + ((diff[1] & LUT_10BIT_MASK) << 10) + + (diff[2] & LUT_10BIT_MASK); } + writel(word, (lut_base + i * 4)); } } =20 --=20 2.40.1