sparc: get leo framebuffer working
This patch fixes several issues:
Use the right openprom device name so the driver is actually loaded.
Fix a crash due to unitialized info->pseudo_palette.
Put the framebuffer in the proper mode for software rendering.
checkpatch cleanups.
Hardware acceleration was removed when the driver was rewritten
for the new framebuffer API in 2003. Software rendering requires
a different framebuffer access mode but that wasn't changed. The
driver now works again but is slow. The proper fix is to reintroduce
hardware acceleration.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/video/leo.c b/drivers/video/leo.c
index 8bc46e9..13fea61 100644
--- a/drivers/video/leo.c
+++ b/drivers/video/leo.c
@@ -17,8 +17,8 @@
#include <linux/fb.h>
#include <linux/mm.h>
#include <linux/of_device.h>
+#include <linux/io.h>
-#include <asm/io.h>
#include <asm/fbio.h>
#include "sbuslib.h"
@@ -33,7 +33,6 @@
static int leo_mmap(struct fb_info *, struct vm_area_struct *);
static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
-static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
/*
* Frame buffer operations
@@ -43,7 +42,6 @@
.owner = THIS_MODULE,
.fb_setcolreg = leo_setcolreg,
.fb_blank = leo_blank,
- .fb_pan_display = leo_pan_display,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
@@ -78,7 +76,7 @@
#define LEO_CUR_TYPE_CMAP 0x00000050
struct leo_cursor {
- u8 xxx0[16];
+ u8 xxx0[16];
u32 cur_type;
u32 cur_misc;
u32 cur_cursxy;
@@ -105,7 +103,7 @@
struct leo_lc_ss0_krn {
u32 misc;
- u8 xxx0[0x800-4];
+ u8 xxx0[0x800-4];
u32 rev;
};
@@ -116,7 +114,7 @@
u32 fontt;
u32 extent;
u32 src;
- u32 dst;
+ u32 dst;
u32 copy;
u32 fill;
};
@@ -129,8 +127,8 @@
u8 unknown;
};
-struct leo_ld {
- u8 xxx0[0xe00];
+struct leo_ld_ss0 {
+ u8 xxx0[0xe00];
u32 csr;
u32 wid;
u32 wmask;
@@ -144,13 +142,13 @@
u32 src; /* Copy/Scroll (SS0 only) */
u32 dst; /* Copy/Scroll/Fill (SS0 only) */
u32 extent; /* Copy/Scroll/Fill size (SS0 only) */
- u32 xxx1[3];
+ u32 xxx1[3];
u32 setsem; /* SS1 only */
u32 clrsem; /* SS1 only */
u32 clrpick; /* SS1 only */
u32 clrdat; /* SS1 only */
u32 alpha; /* SS1 only */
- u8 xxx2[0x2c];
+ u8 xxx2[0x2c];
u32 winbg;
u32 planemask;
u32 rop;
@@ -199,11 +197,12 @@
static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
{
int i;
-
+
for (i = 0;
- (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
+ (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) &&
+ i < 300000;
i++)
- udelay (1); /* Busy wait at most 0.3 sec */
+ udelay(1); /* Busy wait at most 0.3 sec */
return;
}
@@ -221,7 +220,7 @@
unsigned transp, struct fb_info *info)
{
struct leo_par *par = (struct leo_par *) info->par;
- struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
+ struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
unsigned long flags;
u32 val;
int i;
@@ -408,7 +407,7 @@
leo_wait(lx_krn);
for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
- switch(wi->wi_type) {
+ switch (wi->wi_type) {
case FB_WID_DBL_8:
j = (wi->wi_index & 0xf) + 0x40;
break;
@@ -453,13 +452,12 @@
wi.wi_index = 1;
wi.wi_values [0] = 0x30;
leo_wid_put(info, &wl);
-
}
static void leo_switch_from_graph(struct fb_info *info)
{
struct leo_par *par = (struct leo_par *) info->par;
- struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
+ struct leo_ld_ss0 __iomem *ss = par->ld_ss0;
unsigned long flags;
u32 val;
@@ -485,21 +483,15 @@
val = sbus_readl(&par->lc_ss0_usr->csr);
} while (val & 0x20000000);
+ /* setup screen buffer for cfb_* functions */
+ sbus_writel(1, &ss->wid);
+ sbus_writel(0x00ffffff, &ss->planemask);
+ sbus_writel(0x310b90, &ss->rop);
+ sbus_writel(0, &par->lc_ss0_usr->addrspace);
+
spin_unlock_irqrestore(&par->lock, flags);
}
-static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
-{
- /* We just use this to catch switches out of
- * graphics mode.
- */
- leo_switch_from_graph(info);
-
- if (var->xoffset || var->yoffset || var->vmode)
- return -EINVAL;
- return 0;
-}
-
static void leo_init_hw(struct fb_info *info)
{
struct leo_par *par = (struct leo_par *) info->par;
@@ -542,7 +534,8 @@
of_iounmap(&op->resource[0], info->screen_base, 0x800000);
}
-static int __devinit leo_probe(struct of_device *op, const struct of_device_id *match)
+static int __devinit leo_probe(struct of_device *op,
+ const struct of_device_id *match)
{
struct device_node *dp = op->node;
struct fb_info *info;
@@ -594,8 +587,9 @@
!info->screen_base)
goto out_unmap_regs;
- info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
+ info->flags = FBINFO_DEFAULT;
info->fbops = &leo_ops;
+ info->pseudo_palette = par->clut_data;
leo_init_wids(info);
leo_init_hw(info);
@@ -649,7 +643,7 @@
static struct of_device_id leo_match[] = {
{
- .name = "leo",
+ .name = "SUNW,leo",
},
{},
};
