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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-05-01 08:59:22 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:59:22 -0700
commit7149437669f79b497830e643a2b13d26a017b038 (patch)
treef5df8234c2e3cca1a335cf64b9f387c98c123fcf /drivers/video
parent5b052d8bb3ad9108489e7475868e14372774ca08 (diff)
downloadop-kernel-dev-7149437669f79b497830e643a2b13d26a017b038.zip
op-kernel-dev-7149437669f79b497830e643a2b13d26a017b038.tar.gz
[PATCH] fbdev: Batch cmap changes at driver level
This patch adds to the fbdev interface a set_cmap callback that allow the driver to "batch" palette changes. This is useful for drivers like radeonfb which might require lenghtly workarounds on palette accesses, thus allowing to factor out those workarounds efficiently. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/aty/radeon_base.c118
-rw-r--r--drivers/video/fbcmap.c32
2 files changed, 124 insertions, 26 deletions
diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c
index e8eb124..ee25b9e 100644
--- a/drivers/video/aty/radeon_base.c
+++ b/drivers/video/aty/radeon_base.c
@@ -1057,13 +1057,14 @@ static int radeonfb_blank (int blank, struct fb_info *info)
return radeon_screen_blank(rinfo, blank, 0);
}
-static int radeonfb_setcolreg (unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp, struct fb_info *info)
+static int radeon_setcolreg (unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct radeonfb_info *rinfo)
{
- struct radeonfb_info *rinfo = info->par;
u32 pindex;
unsigned int i;
-
+
+
if (regno > 255)
return 1;
@@ -1078,20 +1079,7 @@ static int radeonfb_setcolreg (unsigned regno, unsigned red, unsigned green,
pindex = regno;
if (!rinfo->asleep) {
- u32 dac_cntl2, vclk_cntl = 0;
-
radeon_fifo_wait(9);
- if (rinfo->is_mobility) {
- vclk_cntl = INPLL(VCLK_ECP_CNTL);
- OUTPLL(VCLK_ECP_CNTL, vclk_cntl & ~PIXCLK_DAC_ALWAYS_ONb);
- }
-
- /* Make sure we are on first palette */
- if (rinfo->has_CRTC2) {
- dac_cntl2 = INREG(DAC_CNTL2);
- dac_cntl2 &= ~DAC2_PALETTE_ACCESS_CNTL;
- OUTREG(DAC_CNTL2, dac_cntl2);
- }
if (rinfo->bpp == 16) {
pindex = regno * 8;
@@ -1101,24 +1089,27 @@ static int radeonfb_setcolreg (unsigned regno, unsigned red, unsigned green,
if (rinfo->depth == 15 && regno > 31)
return 1;
- /* For 565, the green component is mixed one order below */
+ /* For 565, the green component is mixed one order
+ * below
+ */
if (rinfo->depth == 16) {
OUTREG(PALETTE_INDEX, pindex>>1);
- OUTREG(PALETTE_DATA, (rinfo->palette[regno>>1].red << 16) |
- (green << 8) | (rinfo->palette[regno>>1].blue));
+ OUTREG(PALETTE_DATA,
+ (rinfo->palette[regno>>1].red << 16) |
+ (green << 8) |
+ (rinfo->palette[regno>>1].blue));
green = rinfo->palette[regno<<1].green;
}
}
if (rinfo->depth != 16 || regno < 32) {
OUTREG(PALETTE_INDEX, pindex);
- OUTREG(PALETTE_DATA, (red << 16) | (green << 8) | blue);
+ OUTREG(PALETTE_DATA, (red << 16) |
+ (green << 8) | blue);
}
- if (rinfo->is_mobility)
- OUTPLL(VCLK_ECP_CNTL, vclk_cntl);
}
if (regno < 16) {
- u32 *pal = info->pseudo_palette;
+ u32 *pal = rinfo->info->pseudo_palette;
switch (rinfo->depth) {
case 15:
pal[regno] = (regno << 10) | (regno << 5) | regno;
@@ -1138,6 +1129,84 @@ static int radeonfb_setcolreg (unsigned regno, unsigned red, unsigned green,
return 0;
}
+static int radeonfb_setcolreg (unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ struct radeonfb_info *rinfo = info->par;
+ u32 dac_cntl2, vclk_cntl = 0;
+ int rc;
+
+ if (!rinfo->asleep) {
+ if (rinfo->is_mobility) {
+ vclk_cntl = INPLL(VCLK_ECP_CNTL);
+ OUTPLL(VCLK_ECP_CNTL,
+ vclk_cntl & ~PIXCLK_DAC_ALWAYS_ONb);
+ }
+
+ /* Make sure we are on first palette */
+ if (rinfo->has_CRTC2) {
+ dac_cntl2 = INREG(DAC_CNTL2);
+ dac_cntl2 &= ~DAC2_PALETTE_ACCESS_CNTL;
+ OUTREG(DAC_CNTL2, dac_cntl2);
+ }
+ }
+
+ rc = radeon_setcolreg (regno, red, green, blue, transp, rinfo);
+
+ if (!rinfo->asleep && rinfo->is_mobility)
+ OUTPLL(VCLK_ECP_CNTL, vclk_cntl);
+
+ return rc;
+}
+
+static int radeonfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
+{
+ struct radeonfb_info *rinfo = info->par;
+ u16 *red, *green, *blue, *transp;
+ u32 dac_cntl2, vclk_cntl = 0;
+ int i, start, rc = 0;
+
+ if (!rinfo->asleep) {
+ if (rinfo->is_mobility) {
+ vclk_cntl = INPLL(VCLK_ECP_CNTL);
+ OUTPLL(VCLK_ECP_CNTL,
+ vclk_cntl & ~PIXCLK_DAC_ALWAYS_ONb);
+ }
+
+ /* Make sure we are on first palette */
+ if (rinfo->has_CRTC2) {
+ dac_cntl2 = INREG(DAC_CNTL2);
+ dac_cntl2 &= ~DAC2_PALETTE_ACCESS_CNTL;
+ OUTREG(DAC_CNTL2, dac_cntl2);
+ }
+ }
+
+ red = cmap->red;
+ green = cmap->green;
+ blue = cmap->blue;
+ transp = cmap->transp;
+ start = cmap->start;
+
+ for (i = 0; i < cmap->len; i++) {
+ u_int hred, hgreen, hblue, htransp = 0xffff;
+
+ hred = *red++;
+ hgreen = *green++;
+ hblue = *blue++;
+ if (transp)
+ htransp = *transp++;
+ rc = radeon_setcolreg (start++, hred, hgreen, hblue, htransp,
+ rinfo);
+ if (rc)
+ break;
+ }
+
+ if (!rinfo->asleep && rinfo->is_mobility)
+ OUTPLL(VCLK_ECP_CNTL, vclk_cntl);
+
+ return rc;
+}
static void radeon_save_state (struct radeonfb_info *rinfo,
struct radeon_regs *save)
@@ -1796,6 +1865,7 @@ static struct fb_ops radeonfb_ops = {
.fb_check_var = radeonfb_check_var,
.fb_set_par = radeonfb_set_par,
.fb_setcolreg = radeonfb_setcolreg,
+ .fb_setcmap = radeonfb_setcmap,
.fb_pan_display = radeonfb_pan_display,
.fb_blank = radeonfb_blank,
.fb_ioctl = radeonfb_ioctl,
diff --git a/drivers/video/fbcmap.c b/drivers/video/fbcmap.c
index c51f8fb..4e5ce8f 100644
--- a/drivers/video/fbcmap.c
+++ b/drivers/video/fbcmap.c
@@ -222,8 +222,11 @@ int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *info)
transp = cmap->transp;
start = cmap->start;
- if (start < 0 || !info->fbops->fb_setcolreg)
+ if (start < 0 || (!info->fbops->fb_setcolreg &&
+ !info->fbops->fb_setcmap))
return -EINVAL;
+ if (info->fbops->fb_setcmap)
+ return info->fbops->fb_setcmap(cmap, info);
for (i = 0; i < cmap->len; i++) {
hred = *red++;
hgreen = *green++;
@@ -250,8 +253,33 @@ int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *info)
transp = cmap->transp;
start = cmap->start;
- if (start < 0 || !info->fbops->fb_setcolreg)
+ if (start < 0 || (!info->fbops->fb_setcolreg &&
+ !info->fbops->fb_setcmap))
return -EINVAL;
+
+ /* If we can batch, do it */
+ if (info->fbops->fb_setcmap && cmap->len > 1) {
+ struct fb_cmap umap;
+ int size = cmap->len * sizeof(u16);
+ int rc;
+
+ memset(&umap, 0, sizeof(struct fb_cmap));
+ rc = fb_alloc_cmap(&umap, cmap->len, transp != NULL);
+ if (rc)
+ return rc;
+ if (copy_from_user(umap.red, red, size) ||
+ copy_from_user(umap.green, green, size) ||
+ copy_from_user(umap.blue, blue, size) ||
+ (transp && copy_from_user(umap.transp, transp, size))) {
+ rc = -EFAULT;
+ }
+ umap.start = start;
+ if (rc == 0)
+ rc = info->fbops->fb_setcmap(&umap, info);
+ fb_dealloc_cmap(&umap);
+ return rc;
+ }
+
for (i = 0; i < cmap->len; i++, red++, blue++, green++) {
if (get_user(hred, red) ||
get_user(hgreen, green) ||
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