From patchwork Sun Mar 29 20:59:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steve Longerbeam X-Patchwork-Id: 11464247 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D2F7B1392 for ; Sun, 29 Mar 2020 20:59:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A7C7D20774 for ; Sun, 29 Mar 2020 20:59:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XthSF840" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728892AbgC2U7n (ORCPT ); Sun, 29 Mar 2020 16:59:43 -0400 Received: from mail-pj1-f68.google.com ([209.85.216.68]:51424 "EHLO mail-pj1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728891AbgC2U7m (ORCPT ); Sun, 29 Mar 2020 16:59:42 -0400 Received: by mail-pj1-f68.google.com with SMTP id w9so6639202pjh.1 for ; Sun, 29 Mar 2020 13:59:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=jikzjO1cIZhKqzQJbxfjm0dX3etS4p3p0i6KNgHmYWM=; b=XthSF840k1NNNWAU8p6RZG1wrhFEu7srtLhR8sr/Jdb80fBRlXxwffOoI/+LRLUvF4 Cl16WiGSOYfSegtfYHtW+FTFbCRgiFEAIY5g37+li3XtcfKAMa/OzaNwxS3QxY/8A87O TZ2TLV1XbPV7wlgdIx0EAfHLuxnqnh0y8telq/SYNCjqiDuWXwwtvyra6AzWo+AaLY5a oEs9oRtEfQajXWIhDlWqyqLwnrWFy4qQ4OtFlrSaO+rAMLP/QhfE+4bYNUhiPwpunb1b YPfFr32KBaPiquYyWIEAJ/o6An4TEkLo+QRK2aiG4vX4GEQqz3JJvH6ufvu/2k6gWva4 BG8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=jikzjO1cIZhKqzQJbxfjm0dX3etS4p3p0i6KNgHmYWM=; b=qQG6W8/VV6dnq0Ei47UOMx4v3S2NBe5Iel2ub3kwv0kIV/SXaZjRMh/TsZB3lyauS5 XtvcO7tsZraOPQ3iCZ4YMqVWOfBxLdi0l1g1m5YBHHJ9ObN1u5oAcddR1RIlf53Y9VPY i95/1x2dotX1s3dPAa1bmJyBMxSE9q9AxlJuqCZkG0m4HPGnDxyFKKjfMYtayx2rueBf wzv2q4YdgxGa+cWy8pfg6ykM6X6yr46++aP3Kvrwlty8ejdAnRoCcERdhEdbaQbzOYVX NVzGkXGAe0n0+eSIzCflWLfg1/AS/1WP00RJUI7kphrS6bct8PTNrk962P84IM5v3x4G lKEg== X-Gm-Message-State: ANhLgQ1RqkA2bu0UXX6rON3A/8UtxTXbX9CTDHdLpdglfUeWNW9HhpxR /evkXphRWDz2JD8Tl97tlCZO9gkojf4= X-Google-Smtp-Source: ADFU+vsFYQFcotDmP8/kMmVmrOETH/I6bjdq0i6FmG8TkI1ZnicnBCUW2vAxqxpUG5CQCDx2B7FebQ== X-Received: by 2002:a17:902:9042:: with SMTP id w2mr9729932plz.269.1585515580327; Sun, 29 Mar 2020 13:59:40 -0700 (PDT) Received: from mappy.nv.charter.com ([2600:6c4e:200:e053:a0c5:5fbc:c28e:f91f]) by smtp.gmail.com with ESMTPSA id 15sm8606049pfu.186.2020.03.29.13.59.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 29 Mar 2020 13:59:39 -0700 (PDT) From: Steve Longerbeam To: linux-media@vger.kernel.org Cc: Laurent Pinchart , Philipp Zabel , Rui Miguel Silva , Steve Longerbeam Subject: [PATCH v4 11/11] media: imx: utils: Split find|enum_format into fourcc and mbus functions Date: Sun, 29 Mar 2020 13:59:20 -0700 Message-Id: <20200329205920.20118-12-slongerbeam@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200329205920.20118-1-slongerbeam@gmail.com> References: <20200329205920.20118-1-slongerbeam@gmail.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org To make the code easier to follow, split up find_format() into separate search functions for pixel formats and media-bus codes. In the process inline the code into the exported functions imx_media_find_pixel_format() and imx_media_find_mbus_format(). Do the equivalent for enum_formats(). Also add comment blocks for the exported find|enum functions. Signed-off-by: Steve Longerbeam --- drivers/staging/media/imx/imx-media-utils.c | 131 +++++++++++++------- 1 file changed, 88 insertions(+), 43 deletions(-) diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c index 1b0cadb601cd..4be588313681 100644 --- a/drivers/staging/media/imx/imx-media-utils.c +++ b/drivers/staging/media/imx/imx-media-utils.c @@ -192,28 +192,58 @@ static const struct imx_media_pixfmt pixel_formats[] = { }, }; -static const struct imx_media_pixfmt *find_format(u32 fourcc, - u32 code, - enum codespace_sel cs_sel) +/* + * Search for and return an entry in the pixel_formats[] array that matches + * the requested search criteria. + * + * @fourcc: Search for an entry with the given fourcc pixel format. + * @cs_sel: Search for entries with the given codespace encodings + * (YUV, RGB, and/or BAYER). + */ +const struct imx_media_pixfmt * +imx_media_find_pixel_format(u32 fourcc, enum codespace_sel cs_sel) { unsigned int i; for (i = 0; i < ARRAY_SIZE(pixel_formats); i++) { const struct imx_media_pixfmt *fmt = &pixel_formats[i]; enum codespace_sel fmt_cs_sel; - unsigned int j; fmt_cs_sel = fmt->bayer ? CS_SEL_BAYER : ((fmt->cs == IPUV3_COLORSPACE_YUV) ? CS_SEL_YUV : CS_SEL_RGB); - if (!(fmt_cs_sel & cs_sel) || (!fourcc && !fmt->codes)) - continue; - - if (fourcc && fmt->fourcc == fourcc) + if ((fmt_cs_sel & cs_sel) && fmt->fourcc == fourcc) return fmt; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(imx_media_find_pixel_format); + +/* + * Search for and return an entry in the pixel_formats[] array that matches + * the requested search criteria. + * + * @code: Search for an entry with the given media-bus code. + * @cs_sel: Search for entries with the given codespace encodings + * (YUV, RGB, and/or BAYER). + */ +const struct imx_media_pixfmt * +imx_media_find_mbus_format(u32 code, enum codespace_sel cs_sel) +{ + unsigned int i; - if (!code || !fmt->codes) + for (i = 0; i < ARRAY_SIZE(pixel_formats); i++) { + const struct imx_media_pixfmt *fmt = &pixel_formats[i]; + enum codespace_sel fmt_cs_sel; + unsigned int j; + + fmt_cs_sel = fmt->bayer ? CS_SEL_BAYER : + ((fmt->cs == IPUV3_COLORSPACE_YUV) ? + CS_SEL_YUV : CS_SEL_RGB); + + if (!(fmt_cs_sel & cs_sel) || !fmt->codes) continue; for (j = 0; fmt->codes[j]; j++) { @@ -224,33 +254,74 @@ static const struct imx_media_pixfmt *find_format(u32 fourcc, return NULL; } +EXPORT_SYMBOL_GPL(imx_media_find_mbus_format); -static int enum_formats(u32 *fourcc, u32 *code, u32 index, - enum codespace_sel cs_sel) +/* + * Enumerate entries in the pixel_formats[] array that match the + * requested search criteria. Returns the fourcc that matches the + * search criteria at the requested match index. + * + * @fourcc: The returned fourcc that matches the search criteria at + * the requested match index. + * @index: The requested match index. + * @cs_sel: Include in the enumeration entries with the given codespace + * encodings (YUV, RGB, and/or BAYER). + */ +int imx_media_enum_pixel_formats(u32 *fourcc, u32 index, + enum codespace_sel cs_sel) { unsigned int i; for (i = 0; i < ARRAY_SIZE(pixel_formats); i++) { const struct imx_media_pixfmt *fmt = &pixel_formats[i]; enum codespace_sel fmt_cs_sel; - unsigned int j; fmt_cs_sel = fmt->bayer ? CS_SEL_BAYER : ((fmt->cs == IPUV3_COLORSPACE_YUV) ? CS_SEL_YUV : CS_SEL_RGB); - if (!(fmt_cs_sel & cs_sel) || (!fourcc && !fmt->codes)) + if (!(fmt_cs_sel & cs_sel)) continue; - if (fourcc && index == 0) { + if (index == 0) { *fourcc = fmt->fourcc; return 0; } - if (!code) { - index--; + index--; + } + + return -EINVAL; +} +EXPORT_SYMBOL_GPL(imx_media_enum_pixel_formats); + +/* + * Enumerate entries in the pixel_formats[] array that match the + * requested search criteria. Returns the media-bus code that matches + * the search criteria at the requested match index. + * + * @code: The returned media-bus code that matches the search criteria at + * the requested match index. + * @index: The requested match index. + * @cs_sel: Include in the enumeration entries with the given codespace + * encodings (YUV, RGB, and/or BAYER). + */ +int imx_media_enum_mbus_formats(u32 *code, u32 index, + enum codespace_sel cs_sel) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(pixel_formats); i++) { + const struct imx_media_pixfmt *fmt = &pixel_formats[i]; + enum codespace_sel fmt_cs_sel; + unsigned int j; + + fmt_cs_sel = fmt->bayer ? CS_SEL_BAYER : + ((fmt->cs == IPUV3_COLORSPACE_YUV) ? + CS_SEL_YUV : CS_SEL_RGB); + + if (!(fmt_cs_sel & cs_sel) || !fmt->codes) continue; - } for (j = 0; fmt->codes[j]; j++) { if (index == 0) { @@ -264,32 +335,6 @@ static int enum_formats(u32 *fourcc, u32 *code, u32 index, return -EINVAL; } - -const struct imx_media_pixfmt * -imx_media_find_pixel_format(u32 fourcc, enum codespace_sel cs_sel) -{ - return find_format(fourcc, 0, cs_sel); -} -EXPORT_SYMBOL_GPL(imx_media_find_pixel_format); - -int imx_media_enum_pixel_formats(u32 *fourcc, u32 index, - enum codespace_sel cs_sel) -{ - return enum_formats(fourcc, NULL, index, cs_sel); -} -EXPORT_SYMBOL_GPL(imx_media_enum_pixel_formats); - -const struct imx_media_pixfmt * -imx_media_find_mbus_format(u32 code, enum codespace_sel cs_sel) -{ - return find_format(0, code, cs_sel); -} -EXPORT_SYMBOL_GPL(imx_media_find_mbus_format); - -int imx_media_enum_mbus_formats(u32 *code, u32 index, enum codespace_sel cs_sel) -{ - return enum_formats(NULL, code, index, cs_sel); -} EXPORT_SYMBOL_GPL(imx_media_enum_mbus_formats); /* -----------------------------------------------------------------------------