From: Andre Heider <a.heider@gmail.com>
To: barebox@lists.infradead.org
Subject: [PATCH 1/6] fb: add a stride value to struct fb_info
Date: Thu, 24 Oct 2013 22:23:41 +0200 [thread overview]
Message-ID: <1382646226-24871-2-git-send-email-a.heider@gmail.com> (raw)
In-Reply-To: <1382646226-24871-1-git-send-email-a.heider@gmail.com>
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 <a.heider@gmail.com>
---
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
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next prev parent reply other threads:[~2013-10-24 20:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-24 20:23 [PATCH 0/6] simple framebuffer driver with RPi support Andre Heider
2013-10-24 20:23 ` Andre Heider [this message]
2013-10-25 10:58 ` [PATCH 1/6] fb: add a stride value to struct fb_info Jean-Christophe PLAGNIOL-VILLARD
2013-10-25 11:51 ` Andre Heider
2013-10-25 23:04 ` Sascha Hauer
2013-10-24 20:23 ` [PATCH 2/6] gui: convert graphic utils to respect the stride value Andre Heider
2013-10-24 20:23 ` [PATCH 3/6] gui: convert the bmp renderer " Andre Heider
2013-10-24 20:23 ` [PATCH 4/6] video: add a simple framebuffer driver Andre Heider
2013-10-24 20:23 ` [PATCH 5/6] ARM: bcm2835: add missing mbox overscan response field Andre Heider
2013-10-24 20:23 ` [PATCH 6/6] ARM: rpi: add support for simplefb Andre Heider
2013-10-25 7:56 ` [PATCH 0/6] simple framebuffer driver with RPi support Andre Heider
2013-10-25 23:51 ` Sascha Hauer
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