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authorYork Sun <yorksun@freescale.com>2008-08-15 09:40:28 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-15 17:35:43 +0200
commitae5591e3f4754478b397a4e09ebd7cf4774ef88e (patch)
treec9d7a34ce41c2dd9b58e8bf5bc467ada58cf001c /drivers/video/fsl-diu-fb.c
parentkexec: use a mutex for locking rather than xchg() (diff)
downloadlinux-ae5591e3f4754478b397a4e09ebd7cf4774ef88e.tar.xz
linux-ae5591e3f4754478b397a4e09ebd7cf4774ef88e.zip
freescale DIU: add virtual resolution and panning support
Application can now have the virtual resoltuion and use FBIOPAN_DISPLAY ioctl to pan. Signed-off-by: York Sun <yorksun@freescale.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
-rw-r--r--drivers/video/fsl-diu-fb.c28
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index bd320a2bfb7c..d9d24938da9e 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -778,6 +778,22 @@ static void unmap_video_memory(struct fb_info *info)
}
/*
+ * Using the fb_var_screeninfo in fb_info we set the aoi of this
+ * particular framebuffer. It is a light version of fsl_diu_set_par.
+ */
+static int fsl_diu_set_aoi(struct fb_info *info)
+{
+ struct fb_var_screeninfo *var = &info->var;
+ struct mfb_info *mfbi = info->par;
+ struct diu_ad *ad = mfbi->ad;
+
+ /* AOI should not be greater than display size */
+ ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
+ ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
+ return 0;
+}
+
+/*
* Using the fb_var_screeninfo in fb_info we set the resolution of this
* particular framebuffer. This function alters the fb_fix_screeninfo stored
* in fb_info. It does not alter var in fb_info since we are using that
@@ -817,11 +833,11 @@ static int fsl_diu_set_par(struct fb_info *info)
diu_ops.get_pixel_format(var->bits_per_pixel,
machine_data->monitor_port);
ad->addr = cpu_to_le32(info->fix.smem_start);
- ad->src_size_g_alpha = cpu_to_le32((var->yres << 12) |
- var->xres) | mfbi->g_alpha;
- /* fix me. AOI should not be greater than display size */
+ ad->src_size_g_alpha = cpu_to_le32((var->yres_virtual << 12) |
+ var->xres_virtual) | mfbi->g_alpha;
+ /* AOI should not be greater than display size */
ad->aoi_size = cpu_to_le32((var->yres << 16) | var->xres);
- ad->offset_xyi = 0;
+ ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
/* Disable chroma keying function */
@@ -921,6 +937,8 @@ static int fsl_diu_pan_display(struct fb_var_screeninfo *var,
else
info->var.vmode &= ~FB_VMODE_YWRAP;
+ fsl_diu_set_aoi(info);
+
return 0;
}
@@ -989,7 +1007,7 @@ static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd,
pr_debug("set AOI display offset of index %d to (%d,%d)\n",
mfbi->index, aoi_d.x_aoi_d, aoi_d.y_aoi_d);
fsl_diu_check_var(&info->var, info);
- fsl_diu_set_par(info);
+ fsl_diu_set_aoi(info);
break;
case MFB_GET_AOID:
aoi_d.x_aoi_d = mfbi->x_aoi_d;