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path: root/drivers/video/pxafb.c
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Diffstat (limited to 'drivers/video/pxafb.c')
-rw-r--r--drivers/video/pxafb.c22
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 1820c4a24434..33a6aacfcbe3 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -80,7 +80,8 @@
static int pxafb_activate_var(struct fb_var_screeninfo *var,
struct pxafb_info *);
static void set_ctrlr_state(struct pxafb_info *fbi, u_int state);
-static void setup_base_frame(struct pxafb_info *fbi, int branch);
+static void setup_base_frame(struct pxafb_info *fbi,
+ struct fb_var_screeninfo *var, int branch);
static int setup_frame_dma(struct pxafb_info *fbi, int dma, int pal,
unsigned long offset, size_t size);
@@ -531,12 +532,22 @@ static int pxafb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct pxafb_info *fbi = (struct pxafb_info *)info;
+ struct fb_var_screeninfo newvar;
int dma = DMA_MAX + DMA_BASE;
if (fbi->state != C_ENABLE)
return 0;
- setup_base_frame(fbi, 1);
+ /* Only take .xoffset, .yoffset and .vmode & FB_VMODE_YWRAP from what
+ * was passed in and copy the rest from the old screeninfo.
+ */
+ memcpy(&newvar, &fbi->fb.var, sizeof(newvar));
+ newvar.xoffset = var->xoffset;
+ newvar.yoffset = var->yoffset;
+ newvar.vmode &= ~FB_VMODE_YWRAP;
+ newvar.vmode |= var->vmode & FB_VMODE_YWRAP;
+
+ setup_base_frame(fbi, &newvar, 1);
if (fbi->lccr0 & LCCR0_SDS)
lcd_writel(fbi, FBR1, fbi->fdadr[dma + 1] | 0x1);
@@ -1052,9 +1063,10 @@ static int setup_frame_dma(struct pxafb_info *fbi, int dma, int pal,
return 0;
}
-static void setup_base_frame(struct pxafb_info *fbi, int branch)
+static void setup_base_frame(struct pxafb_info *fbi,
+ struct fb_var_screeninfo *var,
+ int branch)
{
- struct fb_var_screeninfo *var = &fbi->fb.var;
struct fb_fix_screeninfo *fix = &fbi->fb.fix;
int nbytes, dma, pal, bpp = var->bits_per_pixel;
unsigned long offset;
@@ -1332,7 +1344,7 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var,
#endif
setup_parallel_timing(fbi, var);
- setup_base_frame(fbi, 0);
+ setup_base_frame(fbi, var, 0);
fbi->reg_lccr0 = fbi->lccr0 |
(LCCR0_LDM | LCCR0_SFM | LCCR0_IUM | LCCR0_EFM |