Menu
▾
▴
[Linux-fbdev-devel] patch: fix vga16fb to work in 2.5.x
|
From: Ben P. <bl...@cs...> - 2002-10-20 02:25:37
|
Here's a patch, along the lines of the differences between vesafb
between 2.4.19 and 2.5.44, that makes vga16fb work for me under
2.5.x. I don't get a penguin at boot-up, but I don't get one
with vesafb either, and everything else seems to work.
--- linux-2.5.44/drivers/video/vga16fb.c 2002-10-18 21:01:19.000000000 -0700
+++ linux-2.5.44-work/drivers/video/vga16fb.c 2002-10-19 17:04:32.000000000 -0700
@@ -22,6 +22,7 @@
#include <linux/selection.h>
#include <linux/ioport.h>
#include <linux/init.h>
+#include <linux/interrupt.h>
#include <asm/io.h>
@@ -81,22 +82,33 @@
/* --------------------------------------------------------------------- */
static struct fb_var_screeninfo vga16fb_defined = {
- 640,480,640,480,/* W,H, W, H (virtual) load xres,xres_virtual*/
- 0,0, /* virtual -> visible no offset */
- 4, /* depth -> load bits_per_pixel */
- 0, /* greyscale ? */
- {0,0,0}, /* R */
- {0,0,0}, /* G */
- {0,0,0}, /* B */
- {0,0,0}, /* transparency */
- 0, /* standard pixel format */
- FB_ACTIVATE_NOW,
- -1,-1,
- 0,
- 39721, 48, 16, 39, 8,
- 96, 2, 0, /* No sync info */
- FB_VMODE_NONINTERLACED,
- {0,0,0,0,0,0}
+ .xres = 640,
+ .yres = 480,
+ .xres_virtual = 640,
+ .yres_virtual = 480,
+ .bits_per_pixel = 4,
+ .activate = FB_ACTIVATE_NOW,
+ .height = -1,
+ .width = -1,
+ .pixclock = 39721,
+ .left_margin = 48,
+ .right_margin = 16,
+ .upper_margin = 39,
+ .lower_margin = 8,
+ .hsync_len = 96,
+ .vsync_len = 2,
+ .vmode = FB_VMODE_NONINTERLACED,
+};
+
+static struct fb_fix_screeninfo vga16fb_fix __initdata = {
+ .id = "VGA16 VGA",
+ .smem_start = VGA_FB_PHYS,
+ .smem_len = VGA_FB_PHYS_LEN,
+ .type = FB_TYPE_VGA_PLANES,
+ .visual = FB_VISUAL_PSEUDOCOLOR,
+ .xpanstep = 8,
+ .ypanstep = 1,
+ .line_length = 640 / 8,
};
static struct display disp;
@@ -121,69 +133,22 @@
#endif
}
-static int vga16fb_update_var(int con, struct fb_info *info)
-{
- vga16fb_pan_var(info, &fb_display[con].var);
- return 0;
-}
-
-static int vga16fb_get_fix(struct fb_fix_screeninfo *fix, int con,
- struct fb_info *info)
-{
- struct display *p;
-
- if (con < 0)
- p = &disp;
- else
- p = fb_display + con;
-
- memset(fix, 0, sizeof(struct fb_fix_screeninfo));
- strcpy(fix->id,"VGA16 VGA");
-
- fix->smem_start = VGA_FB_PHYS;
- fix->smem_len = VGA_FB_PHYS_LEN;
- fix->type = FB_TYPE_VGA_PLANES;
- fix->visual = FB_VISUAL_PSEUDOCOLOR;
- fix->xpanstep = 8;
- fix->ypanstep = 1;
- fix->ywrapstep = 0;
- fix->line_length = p->var.xres_virtual / 8;
- return 0;
-}
-
-static int vga16fb_get_var(struct fb_var_screeninfo *var, int con,
- struct fb_info *info)
-{
- if(con==-1)
- memcpy(var, &vga16fb_defined, sizeof(struct fb_var_screeninfo));
- else
- *var=fb_display[con].var;
- return 0;
-}
-
static void vga16fb_set_disp(int con, struct vga16fb_info *info)
{
- struct fb_fix_screeninfo fix;
- struct display *display;
-
- if (con < 0)
- display = &disp;
- else
- display = fb_display + con;
+ struct display *display = (con < 0) ? info->fb_info.disp : (fb_display + con);
-
- vga16fb_get_fix(&fix, con, &info->fb_info);
-
- display->visual = fix.visual;
- display->type = fix.type;
- display->type_aux = fix.type_aux;
- display->ypanstep = fix.ypanstep;
- display->ywrapstep = fix.ywrapstep;
- display->line_length = fix.line_length;
- display->next_line = fix.line_length;
display->can_soft_blank = 1;
+ display->dispsw_data = NULL;
+ display->var = info->fb_info.var;
display->inverse = 0;
+ /*
+ * If we are setting all the virtual consoles, also set
+ * the defaults used to create new consoles.
+ */
+ if (con < 0 || info->fb_info.var.activate & FB_ACTIVATE_ALL)
+ info->fb_info.disp->var = info->fb_info.var;
+
if (info->isVGA)
display->dispsw = &fbcon_vga_planes;
else
@@ -500,13 +465,9 @@
{
struct vga16fb_info *info = (struct vga16fb_info*)fb;
struct vga16fb_par par;
- struct display *display;
+ struct display *display = (con < 0) ? fb->disp : (fb_display + con);
int err;
- if (con < 0)
- display = fb->disp;
- else
- display = fb_display + con;
if ((err = vga16fb_decode_var(var, &par, info)) != 0)
return err;
vga16fb_encode_var(var, &par, info);
@@ -552,25 +513,6 @@
outb_p(0x20, 0x3C0); /* unblank screen */
}
-static int vga16_getcolreg(unsigned regno, unsigned *red, unsigned *green,
- unsigned *blue, unsigned *transp,
- struct fb_info *fb_info)
-{
- /*
- * Read a single color register and split it into colors/transparent.
- * Return != 0 for invalid regno.
- */
-
- if (regno >= 16)
- return 1;
-
- *red = palette[regno].red;
- *green = palette[regno].green;
- *blue = palette[regno].blue;
- *transp = 0;
- return 0;
-}
-
static void vga16_setpalette(int regno, unsigned red, unsigned green, unsigned blue)
{
outb(regno, dac_reg);
@@ -615,19 +557,6 @@
return 0;
}
-static int vga16fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
- struct fb_info *info)
-{
- if (con == info->currcon) /* current console? */
- return fb_get_cmap(cmap, kspc, vga16_getcolreg, info);
- else if (fb_display[con].cmap.len) /* non default colormap? */
- fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
- else
- fb_copy_cmap(fb_default_cmap(16),
- cmap, kspc ? 0 : 2);
- return 0;
-}
-
static int vga16fb_pan_display(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
@@ -811,10 +740,8 @@
static struct fb_ops vga16fb_ops = {
.owner = THIS_MODULE,
- .fb_get_fix = vga16fb_get_fix,
- .fb_get_var = vga16fb_get_var,
.fb_set_var = vga16fb_set_var,
- .fb_get_cmap = vga16fb_get_cmap,
+ .fb_get_cmap = gen_get_cmap,
.fb_set_cmap = gen_set_cmap,
.fb_setcolreg = vga16fb_setcolreg,
.fb_pan_display =vga16fb_pan_display,
@@ -839,27 +766,6 @@
return 0;
}
-static int vga16fb_switch(int con, struct fb_info *fb)
-{
- struct vga16fb_par par;
- struct vga16fb_info *info = (struct vga16fb_info*)fb;
-
- /* Do we have to save the colormap? */
- if (fb_display[fb->currcon].cmap.len)
- fb_get_cmap(&fb_display[fb->currcon].cmap, 1, vga16_getcolreg,
- fb);
-
- fb->currcon = con;
- vga16fb_decode_var(&fb_display[con].var, &par, info);
- vga16fb_set_par(&par, info);
- vga16fb_set_disp(con, info);
-
- /* Install new colormap */
- do_install_cmap(con, fb);
-/* vga16fb_update_var(con, fb); */
- return 1;
-}
-
int __init vga16fb_init(void)
{
int i,j;
@@ -895,19 +801,22 @@
disp.var = vga16fb_defined;
- /* name should not depend on EGA/VGA */
- strcpy(vga16fb.fb_info.modename, "VGA16 VGA");
+ strcpy(vga16fb.fb_info.modename, vga16fb_fix.id);
vga16fb.fb_info.changevar = NULL;
vga16fb.fb_info.node = NODEV;
+ vga16fb.fb_info.var = vga16fb_defined;
+ vga16fb.fb_info.fix = vga16fb_fix;
vga16fb.fb_info.fbops = &vga16fb_ops;
vga16fb.fb_info.screen_base = vga16fb.video_vbase;
vga16fb.fb_info.disp=&disp;
vga16fb.fb_info.currcon = -1;
- vga16fb.fb_info.switch_con=&vga16fb_switch;
- vga16fb.fb_info.updatevar=&vga16fb_update_var;
+ vga16fb.fb_info.switch_con=&gen_switch;
+ vga16fb.fb_info.updatevar=&gen_update_var;
vga16fb.fb_info.flags=FBINFO_FLAG_DEFAULT;
vga16fb_set_disp(-1, &vga16fb);
+ fb_alloc_cmap(&vga16fb.fb_info.cmap, 16, 0);
+
if (register_framebuffer(&vga16fb.fb_info)<0) {
iounmap(vga16fb.video_vbase);
return -EINVAL;
--
Aim to please, shoot to kill.
|
