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path: root/drivers/video/fbdev/vga16fb.c
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Diffstat (limited to 'drivers/video/fbdev/vga16fb.c')
-rw-r--r--drivers/video/fbdev/vga16fb.c191
1 files changed, 73 insertions, 118 deletions
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index d21f68f3ee44..35cf51ae3292 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -1,13 +1,13 @@
/*
* linux/drivers/video/vga16.c -- VGA 16-color framebuffer driver
- *
+ *
* Copyright 1999 Ben Pfaff <pfaffben@debian.org> and Petr Vandrovec <VANDROVE@vc.cvut.cz>
* Based on VGA info at http://www.goodnet.com/~tinara/FreeVGA/home.htm
* Based on VESA framebuffer (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
- * archive for more details.
+ * archive for more details.
*/
#include <linux/module.h>
@@ -25,9 +25,6 @@
#include <asm/io.h>
#include <video/vga.h>
-#define VGA_FB_PHYS 0xA0000
-#define VGA_FB_PHYS_LEN 65536
-
#define MODE_SKIP4 1
#define MODE_8BPP 2
#define MODE_CFB 4
@@ -70,7 +67,7 @@ static struct fb_var_screeninfo vga16fb_defined = {
.yres = 480,
.xres_virtual = 640,
.yres_virtual = 480,
- .bits_per_pixel = 4,
+ .bits_per_pixel = 4,
.activate = FB_ACTIVATE_TEST,
.height = -1,
.width = -1,
@@ -87,8 +84,8 @@ static struct fb_var_screeninfo vga16fb_defined = {
/* name should not depend on EGA/VGA */
static const struct fb_fix_screeninfo vga16fb_fix = {
.id = "VGA16 VGA",
- .smem_start = VGA_FB_PHYS,
- .smem_len = VGA_FB_PHYS_LEN,
+ .smem_start = VGA_FB_PHYS_BASE,
+ .smem_len = VGA_FB_PHYS_SIZE,
.type = FB_TYPE_VGA_PLANES,
.type_aux = FB_AUX_VGA_PLANES_VGA4,
.visual = FB_VISUAL_PSEUDOCOLOR,
@@ -120,7 +117,7 @@ static inline void rmw(volatile char __iomem *p)
static inline int setmode(int mode)
{
int oldmode;
-
+
oldmode = vga_io_rgfx(VGA_GFX_MODE);
vga_io_w(VGA_GFX_D, mode);
return oldmode;
@@ -139,19 +136,19 @@ static inline void setmask(int mask)
vga_io_w(VGA_GFX_D, mask);
}
-/* Set the Data Rotate Register and return its old value.
+/* Set the Data Rotate Register and return its old value.
Bits 0-2 are rotate count, bits 3-4 are logical operation
(0=NOP, 1=AND, 2=OR, 3=XOR). */
static inline int setop(int op)
{
int oldop;
-
+
oldop = vga_io_rgfx(VGA_GFX_DATA_ROTATE);
vga_io_w(VGA_GFX_D, op);
return oldop;
}
-/* Set the Enable Set/Reset Register and return its old value.
+/* Set the Enable Set/Reset Register and return its old value.
The code here always uses value 0xf for this register. */
static inline int setsr(int sr)
{
@@ -185,25 +182,25 @@ static inline void setindex(int index)
}
/* Check if the video mode is supported by the driver */
-static inline int check_mode_supported(void)
+static inline int check_mode_supported(const struct screen_info *si)
{
/* non-x86 architectures treat orig_video_isVGA as a boolean flag */
#if defined(CONFIG_X86)
/* only EGA and VGA in 16 color graphic mode are supported */
- if (screen_info.orig_video_isVGA != VIDEO_TYPE_EGAC &&
- screen_info.orig_video_isVGA != VIDEO_TYPE_VGAC)
+ if (si->orig_video_isVGA != VIDEO_TYPE_EGAC &&
+ si->orig_video_isVGA != VIDEO_TYPE_VGAC)
return -ENODEV;
- if (screen_info.orig_video_mode != 0x0D && /* 320x200/4 (EGA) */
- screen_info.orig_video_mode != 0x0E && /* 640x200/4 (EGA) */
- screen_info.orig_video_mode != 0x10 && /* 640x350/4 (EGA) */
- screen_info.orig_video_mode != 0x12) /* 640x480/4 (VGA) */
+ if (si->orig_video_mode != 0x0D && /* 320x200/4 (EGA) */
+ si->orig_video_mode != 0x0E && /* 640x200/4 (EGA) */
+ si->orig_video_mode != 0x10 && /* 640x350/4 (EGA) */
+ si->orig_video_mode != 0x12) /* 640x480/4 (VGA) */
return -ENODEV;
#endif
return 0;
}
-static void vga16fb_pan_var(struct fb_info *info,
+static void vga16fb_pan_var(struct fb_info *info,
struct fb_var_screeninfo *var)
{
struct vga16fb_par *par = info->par;
@@ -296,7 +293,7 @@ static void vga16fb_clock_chip(struct vga16fb_par *par,
par->clkdiv = best->seq_clock_mode;
*pixclock = (best->pixclock * div) / mul;
}
-
+
#define FAIL(X) return -EINVAL
static int vga16fb_open(struct fb_info *info, int user)
@@ -511,7 +508,7 @@ static int vga16fb_check_var(struct fb_var_screeninfo *var,
par->misc &= ~0x40;
if (var->sync & FB_SYNC_VERT_HIGH_ACT)
par->misc &= ~0x80;
-
+
par->mode = mode;
if (mode & MODE_8BPP)
@@ -520,8 +517,8 @@ static int vga16fb_check_var(struct fb_var_screeninfo *var,
else
/* pixel clock == vga clock */
vga16fb_clock_chip(par, &var->pixclock, info, 1, 1);
-
- var->red.offset = var->green.offset = var->blue.offset =
+
+ var->red.offset = var->green.offset = var->blue.offset =
var->transp.offset = 0;
var->red.length = var->green.length = var->blue.length =
(par->isVGA) ? 6 : 2;
@@ -588,10 +585,10 @@ static int vga16fb_set_par(struct fb_info *info)
else
atc[VGA_ATC_PEL] = info->var.xoffset & 7;
atc[VGA_ATC_COLOR_PAGE] = 0x00;
-
+
if (par->mode & MODE_TEXT) {
- fh = 16; // FIXME !!! Fudge font height.
- par->crtc[VGA_CRTC_MAX_SCAN] = (par->crtc[VGA_CRTC_MAX_SCAN]
+ fh = 16; // FIXME !!! Fudge font height.
+ par->crtc[VGA_CRTC_MAX_SCAN] = (par->crtc[VGA_CRTC_MAX_SCAN]
& ~0x1F) | (fh - 1);
}
@@ -602,10 +599,10 @@ static int vga16fb_set_par(struct fb_info *info)
vga_io_w(EGA_GFX_E0, 0x00);
vga_io_w(EGA_GFX_E1, 0x01);
}
-
+
/* update misc output register */
vga_io_w(VGA_MIS_W, par->misc);
-
+
/* synchronous reset on */
vga_io_wseq(0x00, 0x01);
@@ -617,7 +614,7 @@ static int vga16fb_set_par(struct fb_info *info)
for (i = 2; i < VGA_SEQ_C; i++) {
vga_io_wseq(i, seq[i]);
}
-
+
/* synchronous reset off */
vga_io_wseq(0x00, 0x03);
@@ -628,12 +625,12 @@ static int vga16fb_set_par(struct fb_info *info)
for (i = 0; i < VGA_CRTC_REGS; i++) {
vga_io_wcrt(i, par->crtc[i]);
}
-
+
/* write graphics controller registers */
for (i = 0; i < VGA_GFX_C; i++) {
vga_io_wgfx(i, gdc[i]);
}
-
+
/* write attribute controller registers */
for (i = 0; i < VGA_ATT_C; i++) {
vga_io_r(VGA_IS1_RC); /* reset flip-flop */
@@ -656,7 +653,7 @@ static void ega16_setpalette(int regno, unsigned red, unsigned green, unsigned b
{
static const unsigned char map[] = { 000, 001, 010, 011 };
int val;
-
+
if (regno >= 16)
return;
val = map[red>>14] | ((map[green>>14]) << 1) | ((map[blue>>14]) << 2);
@@ -687,17 +684,17 @@ static int vga16fb_setcolreg(unsigned regno, unsigned red, unsigned green,
* (according to the entries in the `var' structure). Return
* != 0 for invalid regno.
*/
-
+
if (regno >= 256)
return 1;
gray = info->var.grayscale;
-
+
if (gray) {
/* gray = 0.30*R + 0.59*G + 0.11*B */
red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
}
- if (par->isVGA)
+ if (par->isVGA)
vga16_setpalette(regno,red,green,blue);
else
ega16_setpalette(regno,red,green,blue);
@@ -705,7 +702,7 @@ static int vga16fb_setcolreg(unsigned regno, unsigned red, unsigned green,
}
static int vga16fb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info)
+ struct fb_info *info)
{
vga16fb_pan_var(info, var);
return 0;
@@ -720,7 +717,7 @@ static void vga_vesa_blank(struct vga16fb_par *par, int mode)
{
unsigned char SeqCtrlIndex = vga_io_r(VGA_SEQ_I);
unsigned char CrtCtrlIndex = vga_io_r(VGA_CRT_IC);
-
+
/* save original values of VGA controller registers */
if(!par->vesa_blanked) {
par->vga_state.CrtMiscIO = vga_io_r(VGA_MIS_R);
@@ -776,7 +773,7 @@ static void vga_vesa_unblank(struct vga16fb_par *par)
{
unsigned char SeqCtrlIndex = vga_io_r(VGA_SEQ_I);
unsigned char CrtCtrlIndex = vga_io_r(VGA_CRT_IC);
-
+
/* restore original values of VGA controller registers */
vga_io_w(VGA_MIS_W, par->vga_state.CrtMiscIO);
@@ -962,7 +959,7 @@ static void vga16fb_fillrect(struct fb_info *info, const struct fb_fillrect *rec
}
break;
}
- } else
+ } else
vga_8planes_fillrect(info, rect);
break;
case FB_TYPE_PACKED_PIXELS:
@@ -1029,7 +1026,7 @@ static void vga_8planes_copyarea(struct fb_info *info, const struct fb_copyarea
static void vga16fb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
- u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy;
+ u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy;
int x, x2, y2, old_dx, old_dy, vxres, vyres;
int height, width, line_ofs;
char __iomem *dst = NULL;
@@ -1094,9 +1091,9 @@ static void vga16fb_copyarea(struct fb_info *info, const struct fb_copyarea *are
dst += line_ofs;
}
} else {
- dst = info->screen_base + (dx/8) + width +
+ dst = info->screen_base + (dx/8) + width +
(dy + height - 1) * info->fix.line_length;
- src = info->screen_base + (sx/8) + width +
+ src = info->screen_base + (sx/8) + width +
(sy + height - 1) * info->fix.line_length;
while (height--) {
for (x = 0; x < width; x++) {
@@ -1109,7 +1106,7 @@ static void vga16fb_copyarea(struct fb_info *info, const struct fb_copyarea *are
dst -= line_ofs;
}
}
- } else
+ } else
vga_8planes_copyarea(info, area);
break;
case FB_TYPE_PACKED_PIXELS:
@@ -1182,7 +1179,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
setsr(0xf);
setcolor(image->fg_color);
selectmask();
-
+
setmask(0xff);
writeb(image->bg_color, where);
rmb();
@@ -1191,7 +1188,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
wmb();
for (y = 0; y < image->height; y++) {
dst = where;
- for (x = image->width/8; x--;)
+ for (x = image->width/8; x--;)
writeb(*cdat++, dst++);
where += info->fix.line_length;
}
@@ -1202,7 +1199,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
setsr(0xf);
setcolor(image->bg_color);
selectmask();
-
+
setmask(0xff);
for (y = 0; y < image->height; y++) {
dst = where;
@@ -1218,7 +1215,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
where += info->fix.line_length;
}
}
- } else
+ } else
vga_8planes_imageblit(info, image);
break;
case FB_TYPE_PACKED_PIXELS:
@@ -1231,7 +1228,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
static void vga_imageblit_color(struct fb_info *info, const struct fb_image *image)
{
/*
- * Draw logo
+ * Draw logo
*/
struct vga16fb_par *par = info->par;
char __iomem *where =
@@ -1248,7 +1245,7 @@ static void vga_imageblit_color(struct fb_info *info, const struct fb_image *ima
setsr(0xf);
setop(0);
setmode(0);
-
+
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
dst = where + x/8;
@@ -1272,7 +1269,7 @@ static void vga_imageblit_color(struct fb_info *info, const struct fb_image *ima
break;
}
}
-
+
static void vga16fb_imageblit(struct fb_info *info, const struct fb_image *image)
{
if (image->depth == 1)
@@ -1304,28 +1301,22 @@ static const struct fb_ops vga16fb_ops = {
.fb_imageblit = vga16fb_imageblit,
};
-#ifndef MODULE
-static int __init vga16fb_setup(char *options)
-{
- char *this_opt;
-
- if (!options || !*options)
- return 0;
-
- while ((this_opt = strsep(&options, ",")) != NULL) {
- if (!*this_opt) continue;
- }
- return 0;
-}
-#endif
-
static int vga16fb_probe(struct platform_device *dev)
{
+ struct screen_info *si;
struct fb_info *info;
struct vga16fb_par *par;
int i;
int ret = 0;
+ si = dev_get_platdata(&dev->dev);
+ if (!si)
+ return -ENODEV;
+
+ ret = check_mode_supported(si);
+ if (ret)
+ return ret;
+
printk(KERN_DEBUG "vga16fb: initializing\n");
info = framebuffer_alloc(sizeof(struct vga16fb_par), &dev->dev);
@@ -1339,8 +1330,8 @@ static int vga16fb_probe(struct platform_device *dev)
goto err_ioremap;
}
- /* XXX share VGA_FB_PHYS and I/O region with vgacon and others */
- info->screen_base = (void __iomem *)VGA_MAP_MEM(VGA_FB_PHYS, 0);
+ /* XXX share VGA_FB_PHYS_BASE and I/O region with vgacon and others */
+ info->screen_base = (void __iomem *)VGA_MAP_MEM(VGA_FB_PHYS_BASE, 0);
if (!info->screen_base) {
printk(KERN_ERR "vga16fb: unable to map device\n");
@@ -1352,19 +1343,19 @@ static int vga16fb_probe(struct platform_device *dev)
par = info->par;
#if defined(CONFIG_X86)
- par->isVGA = screen_info.orig_video_isVGA == VIDEO_TYPE_VGAC;
+ par->isVGA = si->orig_video_isVGA == VIDEO_TYPE_VGAC;
#else
/* non-x86 architectures treat orig_video_isVGA as a boolean flag */
- par->isVGA = screen_info.orig_video_isVGA;
+ par->isVGA = si->orig_video_isVGA;
#endif
par->palette_blanked = 0;
par->vesa_blanked = 0;
i = par->isVGA? 6 : 2;
-
+
vga16fb_defined.red.length = i;
vga16fb_defined.green.length = i;
- vga16fb_defined.blue.length = i;
+ vga16fb_defined.blue.length = i;
/* name should not depend on EGA/VGA */
info->fbops = &vga16fb_ops;
@@ -1391,8 +1382,8 @@ static int vga16fb_probe(struct platform_device *dev)
vga16fb_update_fix(info);
- info->apertures->ranges[0].base = VGA_FB_PHYS;
- info->apertures->ranges[0].size = VGA_FB_PHYS_LEN;
+ info->apertures->ranges[0].base = VGA_FB_PHYS_BASE;
+ info->apertures->ranges[0].size = VGA_FB_PHYS_SIZE;
if (register_framebuffer(info) < 0) {
printk(KERN_ERR "vga16fb: unable to register framebuffer\n");
@@ -1425,58 +1416,22 @@ static int vga16fb_remove(struct platform_device *dev)
return 0;
}
+static const struct platform_device_id vga16fb_driver_id_table[] = {
+ {"ega-framebuffer", 0},
+ {"vga-framebuffer", 0},
+ { }
+};
+
static struct platform_driver vga16fb_driver = {
.probe = vga16fb_probe,
.remove = vga16fb_remove,
.driver = {
.name = "vga16fb",
},
+ .id_table = vga16fb_driver_id_table,
};
-static struct platform_device *vga16fb_device;
-
-static int __init vga16fb_init(void)
-{
- int ret;
-#ifndef MODULE
- char *option = NULL;
-
- if (fb_get_options("vga16fb", &option))
- return -ENODEV;
-
- vga16fb_setup(option);
-#endif
-
- ret = check_mode_supported();
- if (ret)
- return ret;
-
- ret = platform_driver_register(&vga16fb_driver);
-
- if (!ret) {
- vga16fb_device = platform_device_alloc("vga16fb", 0);
-
- if (vga16fb_device)
- ret = platform_device_add(vga16fb_device);
- else
- ret = -ENOMEM;
-
- if (ret) {
- platform_device_put(vga16fb_device);
- platform_driver_unregister(&vga16fb_driver);
- }
- }
-
- return ret;
-}
-
-static void __exit vga16fb_exit(void)
-{
- platform_device_unregister(vga16fb_device);
- platform_driver_unregister(&vga16fb_driver);
-}
+module_platform_driver(vga16fb_driver);
MODULE_DESCRIPTION("Legacy VGA framebuffer device driver");
MODULE_LICENSE("GPL");
-module_init(vga16fb_init);
-module_exit(vga16fb_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 23:14:44 +0000