From patchwork Sat Mar 11 21:35:32 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Noralf_Tr=C3=B8nnes?= X-Patchwork-Id: 9619131 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 558FB604D9 for ; Sat, 11 Mar 2017 21:36:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 458B7284D5 for ; Sat, 11 Mar 2017 21:36:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3A7472856A; Sat, 11 Mar 2017 21:36:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 492C028528 for ; Sat, 11 Mar 2017 21:35:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 606CC6E180; Sat, 11 Mar 2017 21:35:53 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp.domeneshop.no (smtp.domeneshop.no [IPv6:2a01:5b40:0:3005::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3B89F6E180 for ; Sat, 11 Mar 2017 21:35:52 +0000 (UTC) Received: from 211.81-166-168.customer.lyse.net ([81.166.168.211]:53882 helo=localhost.localdomain) by smtp.domeneshop.no with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1cmog1-0005WX-T4; Sat, 11 Mar 2017 22:35:49 +0100 From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= To: dri-devel@lists.freedesktop.org Subject: [PATCH 1/5] drm/tinydrm: Add tinydrm_rgb565_buf_copy() Date: Sat, 11 Mar 2017 22:35:32 +0100 Message-Id: <20170311213536.2226-2-noralf@tronnes.org> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170311213536.2226-1-noralf@tronnes.org> References: <20170311213536.2226-1-noralf@tronnes.org> MIME-Version: 1.0 Cc: treding@nvidia.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add tinydrm_rgb565_buf_copy() function that copies buffer rectangle to destination buffer and also handles XRGB8888 and byte swap conversions. Useful for displays that only support RGB565 and can do partial updates. Signed-off-by: Noralf Trønnes --- drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 56 +++++++++++++++++++++++++- include/drm/tinydrm/tinydrm-helpers.h | 2 + 2 files changed, 56 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c index d4cda33..e639453 100644 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c @@ -7,13 +7,15 @@ * (at your option) any later version. */ -#include -#include #include +#include #include #include #include +#include +#include + static unsigned int spi_max; module_param(spi_max, uint, 0400); MODULE_PARM_DESC(spi_max, "Set a lower SPI max transfer size"); @@ -181,6 +183,56 @@ void tinydrm_xrgb8888_to_rgb565(u16 *dst, void *vaddr, EXPORT_SYMBOL(tinydrm_xrgb8888_to_rgb565); /** + * tinydrm_rgb565_buf_copy - Copy RGB565/XRGB8888 to RGB565 clip buffer + * @dst: RGB565 destination buffer + * @fb: DRM framebuffer + * @clip: Clip rectangle area to copy + * @swap: Swap bytes + * + * Returns: + * Zero on success, negative error code on failure. + */ +int tinydrm_rgb565_buf_copy(void *dst, struct drm_framebuffer *fb, + struct drm_clip_rect *clip, bool swap) +{ + struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); + struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; + struct drm_format_name_buf format_name; + void *src = cma_obj->vaddr; + int ret = 0; + + if (import_attach) { + ret = dma_buf_begin_cpu_access(import_attach->dmabuf, + DMA_FROM_DEVICE); + if (ret) + return ret; + } + + switch (fb->format->format) { + case DRM_FORMAT_RGB565: + if (swap) + tinydrm_swab16(dst, src, fb, clip); + else + tinydrm_memcpy(dst, src, fb, clip); + break; + case DRM_FORMAT_XRGB8888: + tinydrm_xrgb8888_to_rgb565(dst, src, fb, clip, swap); + break; + default: + dev_err_once(fb->dev->dev, "Format is not supported: %s\n", + drm_get_format_name(fb->format->format, + &format_name)); + return -EINVAL; + } + + if (import_attach) + ret = dma_buf_end_cpu_access(import_attach->dmabuf, + DMA_FROM_DEVICE); + return ret; +} +EXPORT_SYMBOL(tinydrm_rgb565_buf_copy); + +/** * tinydrm_of_find_backlight - Find backlight device in device-tree * @dev: Device * diff --git a/include/drm/tinydrm/tinydrm-helpers.h b/include/drm/tinydrm/tinydrm-helpers.h index 9b9b6cf..d1f6722 100644 --- a/include/drm/tinydrm/tinydrm-helpers.h +++ b/include/drm/tinydrm/tinydrm-helpers.h @@ -43,6 +43,8 @@ void tinydrm_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, void tinydrm_xrgb8888_to_rgb565(u16 *dst, void *vaddr, struct drm_framebuffer *fb, struct drm_clip_rect *clip, bool swap); +int tinydrm_rgb565_buf_copy(void *dst, struct drm_framebuffer *fb, + struct drm_clip_rect *clip, bool swap); struct backlight_device *tinydrm_of_find_backlight(struct device *dev); int tinydrm_enable_backlight(struct backlight_device *backlight);