From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-ea0-x22c.google.com ([2a00:1450:4013:c01::22c]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VZRS9-0004BB-Di for barebox@lists.infradead.org; Thu, 24 Oct 2013 20:24:22 +0000 Received: by mail-ea0-f172.google.com with SMTP id r16so21718ead.31 for ; Thu, 24 Oct 2013 13:23:59 -0700 (PDT) Received: from mamamia.internal (a89-182-11-81.net-htp.de. [89.182.11.81]) by mx.google.com with ESMTPSA id bn13sm8547646eeb.11.2013.10.24.13.23.57 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 24 Oct 2013 13:23:58 -0700 (PDT) From: Andre Heider Date: Thu, 24 Oct 2013 22:23:41 +0200 Message-Id: <1382646226-24871-2-git-send-email-a.heider@gmail.com> In-Reply-To: <1382646226-24871-1-git-send-email-a.heider@gmail.com> References: <1382646226-24871-1-git-send-email-a.heider@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 1/6] fb: add a stride value to struct fb_info To: barebox@lists.infradead.org Add support for framebuffers with noncontiguous horizontal lines. Video drivers can set this value if the hardware requires it. In case a driver does not set it, the current value of xres * (bpp / 8) is used instead. Signed-off-by: Andre Heider --- drivers/video/fb.c | 11 +++++++++-- include/fb.h | 1 + 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/video/fb.c b/drivers/video/fb.c index 420e4e3..e80fab9 100644 --- a/drivers/video/fb.c +++ b/drivers/video/fb.c @@ -72,12 +72,16 @@ static int fb_setup_mode(struct device_d *dev, struct param_d *param, info->xres = info->mode->xres; info->yres = info->mode->yres; + info->stride = 0; ret = info->fbops->fb_activate_var(info); + if (!info->stride) + info->stride = info->xres * (info->bits_per_pixel >> 3); + if (!ret) { dev->resource[0].start = (resource_size_t)info->screen_base; - info->cdev.size = info->xres * info->yres * (info->bits_per_pixel >> 3); + info->cdev.size = info->stride * info->yres; dev->resource[0].end = dev->resource[0].start + info->cdev.size - 1; dev_param_set_generic(dev, param, val); } else @@ -122,9 +126,12 @@ int register_framebuffer(struct fb_info *info) dev = &info->dev; + if (!info->stride) + info->stride = info->xres * (info->bits_per_pixel >> 3); + info->cdev.ops = &fb_ops; info->cdev.name = asprintf("fb%d", id); - info->cdev.size = info->xres * info->yres * (info->bits_per_pixel >> 3); + info->cdev.size = info->stride * info->yres; info->cdev.dev = dev; info->cdev.priv = info; dev->resource = xzalloc(sizeof(struct resource)); diff --git a/include/fb.h b/include/fb.h index df4ba8e..ba46954 100644 --- a/include/fb.h +++ b/include/fb.h @@ -94,6 +94,7 @@ struct fb_info { u32 xres; /* visible resolution */ u32 yres; u32 bits_per_pixel; /* guess what */ + u32 stride; /* number of bytes in each line */ u32 grayscale; /* != 0 Graylevels instead of colors */ -- 1.8.3.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox