From patchwork Tue May 2 08:16:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13228582 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E9C0FC77B7E for ; Tue, 2 May 2023 08:18:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Av5nG3WlVOQXy2ouZ8Kue/FHmQ+WrtUXMVw/mKjEFe0=; b=NoqnPgtIU5yYz0 ux3R1/E7wRBku0kgfXVpsjeP6aeKVi5OV8Kuge2+jSAGPV9MsigNq56sGPjBi2AAUka4UnZLuJ/QB w8sQ2C/IlS0cYQktQVld2Pw2YriKqE9Q2uozqj4HubunTn2ikoAC2muNcEM6X6fOmq26q5AadwrrY tS7JvxR2c4MUwrPElU55BLXCMgZPw/dRuynNZnu41T4luh/+MNfBAB/O0Gs6KBMEJspqU/baRaQdI J7HPK7ISjtMF+9U4G+WsnbeYd4vB1XOd5lSD4KnURk6AQ2d2gWZGNxpE1L/KWM+0rhexDp7t+5XP/ qCBHFFuTjNdrVaTgsAVg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1ptlC8-000a1G-0Z; Tue, 02 May 2023 08:17:08 +0000 Received: from madras.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e5ab]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1ptlC3-000ZvK-1a; Tue, 02 May 2023 08:17:04 +0000 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 47E0F6605636; Tue, 2 May 2023 09:16:57 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1683015418; bh=+lHTPgE7Ar7zmV3aDmJ+jCdx2t03nLTQvXTE79e5Na0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Pj1h1uzX9F2ubLCTynWp8rMxjSwukEgJZHhIlXc5X3OjRjk1hBguPm51mp6cj5fur u1vUbAs0tH2r6Tc6mgmIo/YH+kdvsSeN1QkmlwjHjG/G+qmaZ4pL3gm7PUTVIwo17s 0RyNpUDRw4/R1pgF3LX7+LBKtDPkqcvwPx5QnuhemUMGnarz/jKRpJnRmpl85niGQ3 UB/LQmUaOnKz+g6T3D1b8OgkYwdLCkPC65CU7MNFHzrsGlJphDUKJpcZ99prSoqa0p OOprV9Y9wRUMkYWKPIFF0hBgmWjyYn+eWbPNXWyH1s3C0WtZMigHHoiHaLQ7JYq/Ii qjso/EMp3uqoA== 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 Subject: [PATCH 02/11] drm/mediatek: gamma: Reduce indentation in mtk_gamma_set_common() Date: Tue, 2 May 2023 10:16:41 +0200 Message-Id: <20230502081650.25947-3-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230502081650.25947-1-angelogioacchino.delregno@collabora.com> References: <20230502081650.25947-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230502_011703_666064_1D1B4581 X-CRM114-Status: GOOD ( 14.07 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- 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/mediatek/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 __iomem *regs, struct drm_crt u32 word; u32 diff[3] = {0}; + /* If there's no gamma lut there's nothing to do here. */ + if (!state->gamma_lut) + return; + if (gamma && gamma->data) lut_diff = gamma->data->lut_diff; else lut_diff = false; - if (state->gamma_lut) { - reg = readl(regs + DISP_GAMMA_CFG); - reg = reg | GAMMA_LUT_EN; - writel(reg, regs + DISP_GAMMA_CFG); - lut_base = regs + DISP_GAMMA_LUT; - lut = (struct drm_color_lut *)state->gamma_lut->data; - for (i = 0; i < MTK_LUT_SIZE; i++) { - - if (!lut_diff || (i % 2 == 0)) { - word = (((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] = (lut[i].red >> 6) - (lut[i - 1].red >> 6); - diff[1] = (lut[i].green >> 6) - (lut[i - 1].green >> 6); - diff[2] = (lut[i].blue >> 6) - (lut[i - 1].blue >> 6); - - word = ((diff[0] & LUT_10BIT_MASK) << 20) + - ((diff[1] & LUT_10BIT_MASK) << 10) + - (diff[2] & LUT_10BIT_MASK); - } - writel(word, (lut_base + i * 4)); + reg = readl(regs + DISP_GAMMA_CFG); + reg = reg | GAMMA_LUT_EN; + writel(reg, regs + DISP_GAMMA_CFG); + lut_base = regs + DISP_GAMMA_LUT; + lut = (struct drm_color_lut *)state->gamma_lut->data; + for (i = 0; i < MTK_LUT_SIZE; i++) { + if (!lut_diff || (i % 2 == 0)) { + word = (((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] = (lut[i].red >> 6) - (lut[i - 1].red >> 6); + diff[1] = (lut[i].green >> 6) - (lut[i - 1].green >> 6); + diff[2] = (lut[i].blue >> 6) - (lut[i - 1].blue >> 6); + + word = ((diff[0] & LUT_10BIT_MASK) << 20) + + ((diff[1] & LUT_10BIT_MASK) << 10) + + (diff[2] & LUT_10BIT_MASK); } + writel(word, (lut_base + i * 4)); } }