From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E39B9C8300A for ; Wed, 29 Apr 2020 12:58:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CCAF1208FE for ; Wed, 29 Apr 2020 12:58:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727068AbgD2M6B (ORCPT ); Wed, 29 Apr 2020 08:58:01 -0400 Received: from asav21.altibox.net ([109.247.116.8]:58744 "EHLO asav21.altibox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727042AbgD2M57 (ORCPT ); Wed, 29 Apr 2020 08:57:59 -0400 Received: from localhost.localdomain (unknown [81.166.168.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: noralf.tronnes@ebnett.no) by asav21.altibox.net (Postfix) with ESMTPSA id 6D2C080190; Wed, 29 Apr 2020 14:48:51 +0200 (CEST) From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= To: dri-devel@lists.freedesktop.org, linux-usb@vger.kernel.org Cc: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= Subject: [PATCH 07/10] drm/format-helper: Add drm_fb_swab() Date: Wed, 29 Apr 2020 14:48:27 +0200 Message-Id: <20200429124830.27475-8-noralf@tronnes.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200429124830.27475-1-noralf@tronnes.org> References: <20200429124830.27475-1-noralf@tronnes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=AvXAIt1P c=1 sm=1 tr=0 a=OYZzhG0JTxDrWp/F2OJbnw==:117 a=OYZzhG0JTxDrWp/F2OJbnw==:17 a=IkcTkHD0fZMA:10 a=M51BFTxLslgA:10 a=SJz97ENfAAAA:8 a=BkhVowa2SnULYql5tyEA:9 a=QEXdDO2ut3YA:10 a=vFet0B0WnEQeilDPIY6i:22 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This replaces drm_fb_swab16() with drm_fb_swab() supporting 16 and 32-bit. Also make pixel line caching optional. Signed-off-by: Noralf Trønnes --- drivers/gpu/drm/drm_format_helper.c | 61 +++++++++++++++++++---------- drivers/gpu/drm/drm_mipi_dbi.c | 2 +- include/drm/drm_format_helper.h | 4 +- 3 files changed, 44 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c index 0897cb9aeaff..5c147c49668c 100644 --- a/drivers/gpu/drm/drm_format_helper.c +++ b/drivers/gpu/drm/drm_format_helper.c @@ -79,39 +79,60 @@ void drm_fb_memcpy_dstclip(void __iomem *dst, void *vaddr, EXPORT_SYMBOL(drm_fb_memcpy_dstclip); /** - * drm_fb_swab16 - Swap bytes into clip buffer - * @dst: RGB565 destination buffer - * @vaddr: RGB565 source buffer + * drm_fb_swab - Swap bytes into clip buffer + * @dst: Destination buffer + * @src: Source buffer * @fb: DRM framebuffer * @clip: Clip rectangle area to copy + * @cached: Source buffer is mapped cached (eg. not write-combined) + * + * If @cached is false a temporary buffer is used to cache one pixel line at a + * time to speed up slow uncached reads. + * + * This function does not apply clipping on dst, i.e. the destination + * is a small buffer containing the clip rect only. */ -void drm_fb_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_rect *clip) +void drm_fb_swab(void *dst, void *src, struct drm_framebuffer *fb, + struct drm_rect *clip, bool cached) { - size_t len = (clip->x2 - clip->x1) * sizeof(u16); + u8 cpp = fb->format->cpp[0]; + size_t len = drm_rect_width(clip) * cpp; + u16 *src16, *dst16 = dst; + u32 *src32, *dst32 = dst; unsigned int x, y; - u16 *src, *buf; + void *buf = NULL; - /* - * The cma memory is write-combined so reads are uncached. - * Speed up by fetching one line at a time. - */ - buf = kmalloc(len, GFP_KERNEL); - if (!buf) + if (WARN_ON_ONCE(cpp == 1)) return; + if (!cached) + buf = kmalloc(len, GFP_KERNEL); + + src += clip_offset(clip, fb->pitches[0], cpp); + for (y = clip->y1; y < clip->y2; y++) { - src = vaddr + (y * fb->pitches[0]); - src += clip->x1; - memcpy(buf, src, len); - src = buf; - for (x = clip->x1; x < clip->x2; x++) - *dst++ = swab16(*src++); + if (buf) { + memcpy(buf, src, len); + src16 = buf; + src32 = buf; + } else { + src16 = src; + src32 = src; + } + + for (x = clip->x1; x < clip->x2; x++) { + if (cpp == 4) + *dst32++ = swab32(*src32++); + else + *dst16++ = swab16(*src16++); + } + + src += fb->pitches[0]; } kfree(buf); } -EXPORT_SYMBOL(drm_fb_swab16); +EXPORT_SYMBOL(drm_fb_swab); static void drm_fb_xrgb8888_to_rgb565_line(u16 *dbuf, u32 *sbuf, unsigned int pixels, diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c index 16bff1be4b8a..bfefbcb69287 100644 --- a/drivers/gpu/drm/drm_mipi_dbi.c +++ b/drivers/gpu/drm/drm_mipi_dbi.c @@ -217,7 +217,7 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, switch (fb->format->format) { case DRM_FORMAT_RGB565: if (swap) - drm_fb_swab16(dst, src, fb, clip); + drm_fb_swab(dst, src, fb, clip, !import_attach); else drm_fb_memcpy(dst, src, fb, clip); break; diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h index ac220aa1a245..5f9e37032468 100644 --- a/include/drm/drm_format_helper.h +++ b/include/drm/drm_format_helper.h @@ -14,8 +14,8 @@ void drm_fb_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb, void drm_fb_memcpy_dstclip(void __iomem *dst, void *vaddr, struct drm_framebuffer *fb, struct drm_rect *clip); -void drm_fb_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_rect *clip); +void drm_fb_swab(void *dst, void *src, struct drm_framebuffer *fb, + struct drm_rect *clip, bool cached); void drm_fb_xrgb8888_to_rgb565(void *dst, void *vaddr, struct drm_framebuffer *fb, struct drm_rect *clip, bool swab); -- 2.23.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45C90C83004 for ; Wed, 29 Apr 2020 12:58:22 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 25338208FE for ; Wed, 29 Apr 2020 12:58:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 25338208FE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=tronnes.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 277DA6EE94; Wed, 29 Apr 2020 12:58:17 +0000 (UTC) Received: from asav21.altibox.net (asav21.altibox.net [109.247.116.8]) by gabe.freedesktop.org (Postfix) with ESMTPS id CECF06EE8B for ; Wed, 29 Apr 2020 12:57:57 +0000 (UTC) Received: from localhost.localdomain (unknown [81.166.168.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: noralf.tronnes@ebnett.no) by asav21.altibox.net (Postfix) with ESMTPSA id 6D2C080190; Wed, 29 Apr 2020 14:48:51 +0200 (CEST) From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= To: dri-devel@lists.freedesktop.org, linux-usb@vger.kernel.org Subject: [PATCH 07/10] drm/format-helper: Add drm_fb_swab() Date: Wed, 29 Apr 2020 14:48:27 +0200 Message-Id: <20200429124830.27475-8-noralf@tronnes.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200429124830.27475-1-noralf@tronnes.org> References: <20200429124830.27475-1-noralf@tronnes.org> MIME-Version: 1.0 X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=AvXAIt1P c=1 sm=1 tr=0 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