vesafb: Prefer VGA registers over PMI
PATCH 5/9 vesafb: Prefer VGA registers over PMI
- As per VESA specs, use the VGA registers to set the palette if the mode is VGA compatible. Otherwise, use the protected mode interface.
- Make pmi_setpal default to 1
Signed-off-by Antonino Daplas <[email protected]>
---
drivers/video/vesafb.c | 32 +++++++++++++++++--------------- 1 files changed, 17 insertions(+), 15 deletions(-)
drivers/video/vesafb.c +17 -15
@@ -51,7 +51,7 @@ static int inverse = 0;static int mtrr =0 ;/* disable mtrr */ static int vram_remap__initdata =0 ;/* Set amount of memory to be used */ static int vram_total__initdata =0 ;/* Set total amount of memory */ -static int pmi_setpal =0 ;/* pmi for palette changes ??? */ +static int pmi_setpal =1 ;/* pmi for palette changes ??? */ static int ypan =0 ;/* 0..nothing, 1..ypan, 2..ywrap */ static unsigned short *pmi_base =NULL ;static void (*pmi_start)(void );
@@ -86,10 +86,24 @@ static int vesa_setpalette(int regno, unint shift =16 - depth;int err = -EINVAL ; +/* +* Try VGA registers first... +*/ +if (vga_compat) { +outb_p (regno, dac_reg); +outb_p (red >> shift, dac_val); +outb_p (green >> shift, dac_val); +outb_p (blue >> shift, dac_val); + err =0 ; + } +#ifdef __i386__ -struct {u_char blue, green, red, pad; } entry; +/* +* Fallback to the PMI.... +*/ +if (err && pmi_setpal) { +struct {u_char blue, green, red, pad; } entry; -if (pmi_setpal) { entry.red = red >> shift; entry.green = green >> shift; entry.blue = blue >> shift;
@@ -107,18 +121,6 @@ static int vesa_setpalette(int regno, un }#endif -/* -* without protected mode interface and if VGA compatible, -* try VGA registers... -*/ -if (err && vga_compat) { -outb_p (regno, dac_reg); -outb_p (red >> shift, dac_val); -outb_p (green >> shift, dac_val); -outb_p (blue >> shift, dac_val); - err =0 ; - } -return err; }
-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642