summaryrefslogtreecommitdiffstats
path: root/drivers/video/cg6.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/video/cg6.c')
-rw-r--r--drivers/video/cg6.c36
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/video/cg6.c b/drivers/video/cg6.c
index 9eaa63ab08f..940ec04f0f1 100644
--- a/drivers/video/cg6.c
+++ b/drivers/video/cg6.c
@@ -34,10 +34,11 @@ static int cg6_blank(int, struct fb_info *);
static void cg6_imageblit(struct fb_info *, const struct fb_image *);
static void cg6_fillrect(struct fb_info *, const struct fb_fillrect *);
+static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area);
static int cg6_sync(struct fb_info *);
static int cg6_mmap(struct fb_info *, struct vm_area_struct *);
static int cg6_ioctl(struct fb_info *, unsigned int, unsigned long);
-static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area);
+static int cg6_pan_display(struct fb_var_screeninfo *, struct fb_info *);
/*
* Frame buffer operations
@@ -47,6 +48,7 @@ static struct fb_ops cg6_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = cg6_setcolreg,
.fb_blank = cg6_blank,
+ .fb_pan_display = cg6_pan_display,
.fb_fillrect = cg6_fillrect,
.fb_copyarea = cg6_copyarea,
.fb_imageblit = cg6_imageblit,
@@ -161,6 +163,7 @@ static struct fb_ops cg6_ops = {
#define CG6_THC_MISC_INT_ENAB (1 << 5)
#define CG6_THC_MISC_INT (1 << 4)
#define CG6_THC_MISC_INIT 0x9f
+#define CG6_THC_CURSOFF ((65536-32) | ((65536-32) << 16))
/* The contents are unknown */
struct cg6_tec {
@@ -280,6 +283,33 @@ static int cg6_sync(struct fb_info *info)
return 0;
}
+static void cg6_switch_from_graph(struct cg6_par *par)
+{
+ struct cg6_thc __iomem *thc = par->thc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&par->lock, flags);
+
+ /* Hide the cursor. */
+ sbus_writel(CG6_THC_CURSOFF, &thc->thc_cursxy);
+
+ spin_unlock_irqrestore(&par->lock, flags);
+}
+
+static int cg6_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct cg6_par *par = (struct cg6_par *)info->par;
+
+ /* We just use this to catch switches out of
+ * graphics mode.
+ */
+ cg6_switch_from_graph(par);
+
+ if (var->xoffset || var->yoffset || var->vmode)
+ return -EINVAL;
+ return 0;
+}
+
/**
* cg6_fillrect - Draws a rectangle on the screen.
*
@@ -643,9 +673,13 @@ static void __devinit cg6_chip_init(struct fb_info *info)
struct cg6_par *par = (struct cg6_par *)info->par;
struct cg6_tec __iomem *tec = par->tec;
struct cg6_fbc __iomem *fbc = par->fbc;
+ struct cg6_thc __iomem *thc = par->thc;
u32 rev, conf, mode;
int i;
+ /* Hide the cursor. */
+ sbus_writel(CG6_THC_CURSOFF, &thc->thc_cursxy);
+
/* Turn off stuff in the Transform Engine. */
sbus_writel(0, &tec->tec_matrix);
sbus_writel(0, &tec->tec_clip);