From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-pb0-f45.google.com ([209.85.160.45]:41501 "EHLO mail-pb0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932176AbaFZBH2 (ORCPT ); Wed, 25 Jun 2014 21:07:28 -0400 Received: by mail-pb0-f45.google.com with SMTP id rr13so2399616pbb.18 for ; Wed, 25 Jun 2014 18:07:28 -0700 (PDT) From: Steve Longerbeam To: linux-media@vger.kernel.org Cc: Steve Longerbeam Subject: [PATCH 16/28] gpu: ipu-v3: Add ipu_stride_to_bytes() Date: Wed, 25 Jun 2014 18:05:43 -0700 Message-Id: <1403744755-24944-17-git-send-email-steve_longerbeam@mentor.com> In-Reply-To: <1403744755-24944-1-git-send-email-steve_longerbeam@mentor.com> References: <1403744755-24944-1-git-send-email-steve_longerbeam@mentor.com> Sender: linux-media-owner@vger.kernel.org List-ID: Adds ipu_stride_to_bytes(), which converts a pixel stride to bytes, suitable for passing to cpmem. Signed-off-by: Steve Longerbeam --- drivers/gpu/ipu-v3/ipu-common.c | 30 ++++++++++++++++++++++++++++++ include/video/imx-ipu-v3.h | 1 + 2 files changed, 31 insertions(+) diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c index 7701974..30afef4 100644 --- a/drivers/gpu/ipu-v3/ipu-common.c +++ b/drivers/gpu/ipu-v3/ipu-common.c @@ -576,6 +576,36 @@ enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code) } EXPORT_SYMBOL_GPL(ipu_mbus_code_to_colorspace); +int ipu_stride_to_bytes(u32 pixel_stride, u32 pixelformat) +{ + switch (pixelformat) { + case V4L2_PIX_FMT_YUV420: + case V4L2_PIX_FMT_YVU420: + /* + * for the planar YUV formats, the stride passed to + * cpmem must be the stride in bytes of the Y plane. + * And all the planar YUV formats have an 8-bit + * Y component. + */ + return (8 * pixel_stride) >> 3; + case V4L2_PIX_FMT_RGB565: + case V4L2_PIX_FMT_YUYV: + case V4L2_PIX_FMT_UYVY: + return (16 * pixel_stride) >> 3; + case V4L2_PIX_FMT_BGR24: + case V4L2_PIX_FMT_RGB24: + return (24 * pixel_stride) >> 3; + case V4L2_PIX_FMT_BGR32: + case V4L2_PIX_FMT_RGB32: + return (32 * pixel_stride) >> 3; + default: + break; + } + + return -EINVAL; +} +EXPORT_SYMBOL_GPL(ipu_stride_to_bytes); + int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees, bool hflip, bool vflip) { diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index 9ed1c75..17a0bb8 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -480,6 +480,7 @@ int ipu_cpmem_set_image(struct ipu_ch_param __iomem *cpmem, enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc); enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat); enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code); +int ipu_stride_to_bytes(u32 pixel_stride, u32 pixelformat); bool ipu_pixelformat_is_planar(u32 pixelformat); int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees, bool hflip, bool vflip); -- 1.7.9.5