From patchwork Tue Feb 15 16:52:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 542864 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 96F48C4167D for ; Tue, 15 Feb 2022 16:52:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241881AbiBOQwq (ORCPT ); Tue, 15 Feb 2022 11:52:46 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:60028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241836AbiBOQwp (ORCPT ); Tue, 15 Feb 2022 11:52:45 -0500 Received: from michel.telenet-ops.be (michel.telenet-ops.be [IPv6:2a02:1800:110:4::f00:18]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 69C439BBA8 for ; Tue, 15 Feb 2022 08:52:33 -0800 (PST) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed40:7534:e0be:5adf:2691]) by michel.telenet-ops.be with bizsmtp id vUsV2600518GbK106UsVDG; Tue, 15 Feb 2022 17:52:31 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1nK140-000tUr-LD; Tue, 15 Feb 2022 17:52:28 +0100 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1nK140-00BUSC-3a; Tue, 15 Feb 2022 17:52:28 +0100 From: Geert Uytterhoeven To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Helge Deller , Javier Martinez Canillas Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-m68k@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 8/8] drm/fourcc: Add DRM_FORMAT_D1 Date: Tue, 15 Feb 2022 17:52:26 +0100 Message-Id: <20220215165226.2738568-9-geert@linux-m68k.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220215165226.2738568-1-geert@linux-m68k.org> References: <20220215165226.2738568-1-geert@linux-m68k.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Introduce a fourcc code for a single-channel frame buffer format with two darkness levels. This can be used for two-level dark-on-light displays. As the number of bits per pixel is less than eight, this relies on proper block handling for the calculation of bits per pixel and pitch. Signed-off-by: Geert Uytterhoeven --- drivers/gpu/drm/drm_fourcc.c | 2 ++ include/uapi/drm/drm_fourcc.h | 3 +++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index c12e48ecb1ab8aad..d00ce5d8d1fb9dd3 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -151,6 +151,8 @@ const struct drm_format_info *__drm_format_info(u32 format) { .format = DRM_FORMAT_C4, .depth = 4, .num_planes = 1, .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 }, + { .format = DRM_FORMAT_D1, .depth = 1, .num_planes = 1, + .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, { .format = DRM_FORMAT_R1, .depth = 1, .num_planes = 1, .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 }, { .format = DRM_FORMAT_R2, .depth = 2, .num_planes = 1, diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 8605a1acc6813e6c..c15c6efcc65e5827 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -104,6 +104,9 @@ extern "C" { #define DRM_FORMAT_C4 fourcc_code('C', '4', ' ', ' ') /* [3:0] C */ #define DRM_FORMAT_C8 fourcc_code('C', '8', ' ', ' ') /* [7:0] C */ +/* 1 bpp Darkness */ +#define DRM_FORMAT_D1 fourcc_code('D', '1', ' ', ' ') /* [0] D */ + /* 1 bpp Red */ #define DRM_FORMAT_R1 fourcc_code('R', '1', ' ', ' ') /* [0] R */