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path: root/drivers/video/ffb.c
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Diffstat (limited to 'drivers/video/ffb.c')
-rw-r--r--drivers/video/ffb.c84
1 files changed, 60 insertions, 24 deletions
diff --git a/drivers/video/ffb.c b/drivers/video/ffb.c
index 15854aec318..1d4e8354b56 100644
--- a/drivers/video/ffb.c
+++ b/drivers/video/ffb.c
@@ -336,14 +336,30 @@ struct ffb_dac {
u32 value2;
};
+#define FFB_DAC_UCTRL 0x1001 /* User Control */
+#define FFB_DAC_UCTRL_MANREV 0x00000f00 /* 4-bit Manufacturing Revision */
+#define FFB_DAC_UCTRL_MANREV_SHIFT 8
+#define FFB_DAC_TGEN 0x6000 /* Timing Generator */
+#define FFB_DAC_TGEN_VIDE 0x00000001 /* Video Enable */
+#define FFB_DAC_DID 0x8000 /* Device Identification */
+#define FFB_DAC_DID_PNUM 0x0ffff000 /* Device Part Number */
+#define FFB_DAC_DID_PNUM_SHIFT 12
+#define FFB_DAC_DID_REV 0xf0000000 /* Device Revision */
+#define FFB_DAC_DID_REV_SHIFT 28
+
+#define FFB_DAC_CUR_CTRL 0x100
+#define FFB_DAC_CUR_CTRL_P0 0x00000001
+#define FFB_DAC_CUR_CTRL_P1 0x00000002
+
struct ffb_par {
spinlock_t lock;
struct ffb_fbc __iomem *fbc;
struct ffb_dac __iomem *dac;
u32 flags;
-#define FFB_FLAG_AFB 0x00000001
-#define FFB_FLAG_BLANKED 0x00000002
+#define FFB_FLAG_AFB 0x00000001 /* AFB m3 or m6 */
+#define FFB_FLAG_BLANKED 0x00000002 /* screen is blanked */
+#define FFB_FLAG_INVCURSOR 0x00000004 /* DAC has inverted cursor logic */
u32 fg_cache __attribute__((aligned (8)));
u32 bg_cache;
@@ -354,7 +370,6 @@ struct ffb_par {
unsigned long physbase;
unsigned long fbsize;
- int dac_rev;
int board_type;
};
@@ -426,11 +441,12 @@ static void ffb_switch_from_graph(struct ffb_par *par)
FFBWait(par);
/* Disable cursor. */
- upa_writel(0x100, &dac->type2);
- if (par->dac_rev <= 2)
+ upa_writel(FFB_DAC_CUR_CTRL, &dac->type2);
+ if (par->flags & FFB_FLAG_INVCURSOR)
upa_writel(0, &dac->value2);
else
- upa_writel(3, &dac->value2);
+ upa_writel((FFB_DAC_CUR_CTRL_P0 |
+ FFB_DAC_CUR_CTRL_P1), &dac->value2);
spin_unlock_irqrestore(&par->lock, flags);
}
@@ -664,18 +680,18 @@ ffb_blank(int blank, struct fb_info *info)
struct ffb_par *par = (struct ffb_par *) info->par;
struct ffb_dac __iomem *dac = par->dac;
unsigned long flags;
- u32 tmp;
+ u32 val;
+ int i;
spin_lock_irqsave(&par->lock, flags);
FFBWait(par);
+ upa_writel(FFB_DAC_TGEN, &dac->type);
+ val = upa_readl(&dac->value);
switch (blank) {
case FB_BLANK_UNBLANK: /* Unblanking */
- upa_writel(0x6000, &dac->type);
- tmp = (upa_readl(&dac->value) | 0x1);
- upa_writel(0x6000, &dac->type);
- upa_writel(tmp, &dac->value);
+ val |= FFB_DAC_TGEN_VIDE;
par->flags &= ~FFB_FLAG_BLANKED;
break;
@@ -683,13 +699,16 @@ ffb_blank(int blank, struct fb_info *info)
case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
case FB_BLANK_POWERDOWN: /* Poweroff */
- upa_writel(0x6000, &dac->type);
- tmp = (upa_readl(&dac->value) & ~0x1);
- upa_writel(0x6000, &dac->type);
- upa_writel(tmp, &dac->value);
+ val &= ~FFB_DAC_TGEN_VIDE;
par->flags |= FFB_FLAG_BLANKED;
break;
}
+ upa_writel(FFB_DAC_TGEN, &dac->type);
+ upa_writel(val, &dac->value);
+ for (i = 0; i < 10; i++) {
+ upa_writel(FFB_DAC_TGEN, &dac->type);
+ upa_readl(&dac->value);
+ }
spin_unlock_irqrestore(&par->lock, flags);
@@ -894,6 +913,7 @@ static int ffb_init_one(struct of_device *op)
struct ffb_dac __iomem *dac;
struct all_info *all;
int err;
+ u32 dac_pnum, dac_rev, dac_mrev;
all = kzalloc(sizeof(*all), GFP_KERNEL);
if (!all)
@@ -948,17 +968,31 @@ static int ffb_init_one(struct of_device *op)
if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
- ffb_switch_from_graph(&all->par);
-
dac = all->par.dac;
- upa_writel(0x8000, &dac->type);
- all->par.dac_rev = upa_readl(&dac->value) >> 0x1c;
+ upa_writel(FFB_DAC_DID, &dac->type);
+ dac_pnum = upa_readl(&dac->value);
+ dac_rev = (dac_pnum & FFB_DAC_DID_REV) >> FFB_DAC_DID_REV_SHIFT;
+ dac_pnum = (dac_pnum & FFB_DAC_DID_PNUM) >> FFB_DAC_DID_PNUM_SHIFT;
+
+ upa_writel(FFB_DAC_UCTRL, &dac->type);
+ dac_mrev = upa_readl(&dac->value);
+ dac_mrev = (dac_mrev & FFB_DAC_UCTRL_MANREV) >>
+ FFB_DAC_UCTRL_MANREV_SHIFT;
/* Elite3D has different DAC revision numbering, and no DAC revisions
- * have the reversed meaning of cursor enable.
+ * have the reversed meaning of cursor enable. Otherwise, Pacifica 1
+ * ramdacs with manufacturing revision less than 3 have inverted
+ * cursor logic. We identify Pacifica 1 as not Pacifica 2, the
+ * latter having a part number value of 0x236e.
*/
- if (all->par.flags & FFB_FLAG_AFB)
- all->par.dac_rev = 10;
+ if ((all->par.flags & FFB_FLAG_AFB) || dac_pnum == 0x236e) {
+ all->par.flags &= ~FFB_FLAG_INVCURSOR;
+ } else {
+ if (dac_mrev < 3)
+ all->par.flags |= FFB_FLAG_INVCURSOR;
+ }
+
+ ffb_switch_from_graph(&all->par);
/* Unblank it just to be sure. When there are multiple
* FFB/AFB cards in the system, or it is not the OBP
@@ -993,10 +1027,12 @@ static int ffb_init_one(struct of_device *op)
dev_set_drvdata(&op->dev, all);
- printk("%s: %s at %016lx, type %d, DAC revision %d\n",
+ printk("%s: %s at %016lx, type %d, "
+ "DAC pnum[%x] rev[%d] manuf_rev[%d]\n",
dp->full_name,
((all->par.flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
- all->par.physbase, all->par.board_type, all->par.dac_rev);
+ all->par.physbase, all->par.board_type,
+ dac_pnum, dac_rev, dac_mrev);
return 0;
}