提交 5b600464 编写于 作者: A Antonino A. Daplas 提交者: Linus Torvalds

[PATCH] savagefb: Fix black screen on load in Savage IX

This is a hack that seems to kick start the 2D engine of the Savage IX in some
Toshiba laptops.  Without this, the laptop starts with a black screen and
occasionally crashes X.
Signed-off-by: NAntonino Daplas <adaplas@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 e52e15d3
...@@ -384,6 +384,19 @@ SavageSetup2DEngine(struct savagefb_par *par) ...@@ -384,6 +384,19 @@ SavageSetup2DEngine(struct savagefb_par *par)
BCI_SEND(0); BCI_SEND(0);
BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD2); BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD2);
BCI_SEND(GlobalBitmapDescriptor); BCI_SEND(GlobalBitmapDescriptor);
/*
* I don't know why, sending this twice fixes the intial black screen,
* prevents X from crashing at least in Toshiba laptops with SavageIX.
* --Tony
*/
par->bci_ptr = 0;
par->SavageWaitFifo(par, 4);
BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD1);
BCI_SEND(0);
BCI_SEND(BCI_CMD_SETREG | (1 << 16) | BCI_GBD2);
BCI_SEND(GlobalBitmapDescriptor);
} }
static void savagefb_set_clip(struct fb_info *info) static void savagefb_set_clip(struct fb_info *info)
......
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