summaryrefslogtreecommitdiffstats
path: root/drivers/video/vga16fb.c
diff options
context:
space:
mode:
authorTomi Valkeinen <tomi.valkeinen@ti.com>2014-02-13 14:31:38 +0100
committerTomi Valkeinen <tomi.valkeinen@ti.com>2014-04-17 07:10:19 +0200
commitf7018c21350204c4cf628462f229d44d03545254 (patch)
tree408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/vga16fb.c
parentvideo: bf54x-lq043fb: fix build error (diff)
downloadlinux-f7018c21350204c4cf628462f229d44d03545254.tar.xz
linux-f7018c21350204c4cf628462f229d44d03545254.zip
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related files, directories for backlight, console, linux logo, lots of fbdev device drivers, fbdev framework files. Make some order into the chaos by creating drivers/video/fbdev directory, and move all fbdev related files there. No functionality is changed, although I guess it is possible that some subtle Makefile build order related issue could be created by this patch. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Rob Clark <robdclark@gmail.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/vga16fb.c')
-rw-r--r--drivers/video/vga16fb.c1464
1 files changed, 0 insertions, 1464 deletions
diff --git a/drivers/video/vga16fb.c b/drivers/video/vga16fb.c
deleted file mode 100644
index 283d335a759f..000000000000
--- a/drivers/video/vga16fb.c
+++ /dev/null
@@ -1,1464 +0,0 @@
-/*
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/delay.h>
-#include <linux/fb.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/screen_info.h>
-
-#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
-#define MODE_TEXT 8
-
-/* --------------------------------------------------------------------- */
-
-/*
- * card parameters
- */
-
-struct vga16fb_par {
- /* structure holding original VGA register settings when the
- screen is blanked */
- struct {
- unsigned char SeqCtrlIndex; /* Sequencer Index reg. */
- unsigned char CrtCtrlIndex; /* CRT-Contr. Index reg. */
- unsigned char CrtMiscIO; /* Miscellaneous register */
- unsigned char HorizontalTotal; /* CRT-Controller:00h */
- unsigned char HorizDisplayEnd; /* CRT-Controller:01h */
- unsigned char StartHorizRetrace;/* CRT-Controller:04h */
- unsigned char EndHorizRetrace; /* CRT-Controller:05h */
- unsigned char Overflow; /* CRT-Controller:07h */
- unsigned char StartVertRetrace; /* CRT-Controller:10h */
- unsigned char EndVertRetrace; /* CRT-Controller:11h */
- unsigned char ModeControl; /* CRT-Controller:17h */
- unsigned char ClockingMode; /* Seq-Controller:01h */
- } vga_state;
- struct vgastate state;
- unsigned int ref_count;
- int palette_blanked, vesa_blanked, mode, isVGA;
- u8 misc, pel_msk, vss, clkdiv;
- u8 crtc[VGA_CRT_C];
-};
-
-/* --------------------------------------------------------------------- */
-
-static struct fb_var_screeninfo vga16fb_defined = {
- .xres = 640,
- .yres = 480,
- .xres_virtual = 640,
- .yres_virtual = 480,
- .bits_per_pixel = 4,
- .activate = FB_ACTIVATE_TEST,
- .height = -1,
- .width = -1,
- .pixclock = 39721,
- .left_margin = 48,
- .right_margin = 16,
- .upper_margin = 33,
- .lower_margin = 10,
- .hsync_len = 96,
- .vsync_len = 2,
- .vmode = FB_VMODE_NONINTERLACED,
-};
-
-/* name should not depend on EGA/VGA */
-static struct fb_fix_screeninfo vga16fb_fix = {
- .id = "VGA16 VGA",
- .smem_start = VGA_FB_PHYS,
- .smem_len = VGA_FB_PHYS_LEN,
- .type = FB_TYPE_VGA_PLANES,
- .type_aux = FB_AUX_VGA_PLANES_VGA4,
- .visual = FB_VISUAL_PSEUDOCOLOR,
- .xpanstep = 8,
- .ypanstep = 1,
- .line_length = 640 / 8,
- .accel = FB_ACCEL_NONE
-};
-
-/* The VGA's weird architecture often requires that we read a byte and
- write a byte to the same location. It doesn't matter *what* byte
- we write, however. This is because all the action goes on behind
- the scenes in the VGA's 32-bit latch register, and reading and writing
- video memory just invokes latch behavior.
-
- To avoid race conditions (is this necessary?), reading and writing
- the memory byte should be done with a single instruction. One
- suitable instruction is the x86 bitwise OR. The following
- read-modify-write routine should optimize to one such bitwise
- OR. */
-static inline void rmw(volatile char __iomem *p)
-{
- readb(p);
- writeb(1, p);
-}
-
-/* Set the Graphics Mode Register, and return its previous value.
- Bits 0-1 are write mode, bit 3 is read mode. */
-static inline int setmode(int mode)
-{
- int oldmode;
-
- oldmode = vga_io_rgfx(VGA_GFX_MODE);
- vga_io_w(VGA_GFX_D, mode);
- return oldmode;
-}
-
-/* Select the Bit Mask Register and return its value. */
-static inline int selectmask(void)
-{
- return vga_io_rgfx(VGA_GFX_BIT_MASK);
-}
-
-/* Set the value of the Bit Mask Register. It must already have been
- selected with selectmask(). */
-static inline void setmask(int mask)
-{
- vga_io_w(VGA_GFX_D, mask);
-}
-
-/* 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.
- The code here always uses value 0xf for this register. */
-static inline int setsr(int sr)
-{
- int oldsr;
-
- oldsr = vga_io_rgfx(VGA_GFX_SR_ENABLE);
- vga_io_w(VGA_GFX_D, sr);
- return oldsr;
-}
-
-/* Set the Set/Reset Register and return its old value. */
-static inline int setcolor(int color)
-{
- int oldcolor;
-
- oldcolor = vga_io_rgfx(VGA_GFX_SR_VALUE);
- vga_io_w(VGA_GFX_D, color);
- return oldcolor;
-}
-
-/* Return the value in the Graphics Address Register. */
-static inline int getindex(void)
-{
- return vga_io_r(VGA_GFX_I);
-}
-
-/* Set the value in the Graphics Address Register. */
-static inline void setindex(int index)
-{
- vga_io_w(VGA_GFX_I, index);
-}
-
-static void vga16fb_pan_var(struct fb_info *info,
- struct fb_var_screeninfo *var)
-{
- struct vga16fb_par *par = info->par;
- u32 xoffset, pos;
-
- xoffset = var->xoffset;
- if (info->var.bits_per_pixel == 8) {
- pos = (info->var.xres_virtual * var->yoffset + xoffset) >> 2;
- } else if (par->mode & MODE_TEXT) {
- int fh = 16; // FIXME !!! font height. Fugde for now.
- pos = (info->var.xres_virtual * (var->yoffset / fh) + xoffset) >> 3;
- } else {
- if (info->var.nonstd)
- xoffset--;
- pos = (info->var.xres_virtual * var->yoffset + xoffset) >> 3;
- }
- vga_io_wcrt(VGA_CRTC_START_HI, pos >> 8);
- vga_io_wcrt(VGA_CRTC_START_LO, pos & 0xFF);
- /* if we support CFB4, then we must! support xoffset with pixel
- * granularity if someone supports xoffset in bit resolution */
- vga_io_r(VGA_IS1_RC); /* reset flip-flop */
- vga_io_w(VGA_ATT_IW, VGA_ATC_PEL);
- if (info->var.bits_per_pixel == 8)
- vga_io_w(VGA_ATT_IW, (xoffset & 3) << 1);
- else
- vga_io_w(VGA_ATT_IW, xoffset & 7);
- vga_io_r(VGA_IS1_RC);
- vga_io_w(VGA_ATT_IW, 0x20);
-}
-
-static void vga16fb_update_fix(struct fb_info *info)
-{
- if (info->var.bits_per_pixel == 4) {
- if (info->var.nonstd) {
- info->fix.type = FB_TYPE_PACKED_PIXELS;
- info->fix.line_length = info->var.xres_virtual / 2;
- } else {
- info->fix.type = FB_TYPE_VGA_PLANES;
- info->fix.type_aux = FB_AUX_VGA_PLANES_VGA4;
- info->fix.line_length = info->var.xres_virtual / 8;
- }
- } else if (info->var.bits_per_pixel == 0) {
- info->fix.type = FB_TYPE_TEXT;
- info->fix.type_aux = FB_AUX_TEXT_CGA;
- info->fix.line_length = info->var.xres_virtual / 4;
- } else { /* 8bpp */
- if (info->var.nonstd) {
- info->fix.type = FB_TYPE_VGA_PLANES;
- info->fix.type_aux = FB_AUX_VGA_PLANES_CFB8;
- info->fix.line_length = info->var.xres_virtual / 4;
- } else {
- info->fix.type = FB_TYPE_PACKED_PIXELS;
- info->fix.line_length = info->var.xres_virtual;
- }
- }
-}
-
-static void vga16fb_clock_chip(struct vga16fb_par *par,
- unsigned int pixclock,
- const struct fb_info *info,
- int mul, int div)
-{
- static const struct {
- u32 pixclock;
- u8 misc;
- u8 seq_clock_mode;
- } *ptr, *best, vgaclocks[] = {
- { 79442 /* 12.587 */, 0x00, 0x08},
- { 70616 /* 14.161 */, 0x04, 0x08},
- { 39721 /* 25.175 */, 0x00, 0x00},
- { 35308 /* 28.322 */, 0x04, 0x00},
- { 0 /* bad */, 0x00, 0x00}};
- int err;
-
- pixclock = (pixclock * mul) / div;
- best = vgaclocks;
- err = pixclock - best->pixclock;
- if (err < 0) err = -err;
- for (ptr = vgaclocks + 1; ptr->pixclock; ptr++) {
- int tmp;
-
- tmp = pixclock - ptr->pixclock;
- if (tmp < 0) tmp = -tmp;
- if (tmp < err) {
- err = tmp;
- best = ptr;
- }
- }
- par->misc |= best->misc;
- 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)
-{
- struct vga16fb_par *par = info->par;
-
- if (!par->ref_count) {
- memset(&par->state, 0, sizeof(struct vgastate));
- par->state.flags = VGA_SAVE_FONTS | VGA_SAVE_MODE |
- VGA_SAVE_CMAP;
- save_vga(&par->state);
- }
- par->ref_count++;
-
- return 0;
-}
-
-static int vga16fb_release(struct fb_info *info, int user)
-{
- struct vga16fb_par *par = info->par;
-
- if (!par->ref_count)
- return -EINVAL;
-
- if (par->ref_count == 1)
- restore_vga(&par->state);
- par->ref_count--;
-
- return 0;
-}
-
-static int vga16fb_check_var(struct fb_var_screeninfo *var,
- struct fb_info *info)
-{
- struct vga16fb_par *par = info->par;
- u32 xres, right, hslen, left, xtotal;
- u32 yres, lower, vslen, upper, ytotal;
- u32 vxres, xoffset, vyres, yoffset;
- u32 pos;
- u8 r7, rMode;
- int shift;
- int mode;
- u32 maxmem;
-
- par->pel_msk = 0xFF;
-
- if (var->bits_per_pixel == 4) {
- if (var->nonstd) {
- if (!par->isVGA)
- return -EINVAL;
- shift = 3;
- mode = MODE_SKIP4 | MODE_CFB;
- maxmem = 16384;
- par->pel_msk = 0x0F;
- } else {
- shift = 3;
- mode = 0;
- maxmem = 65536;
- }
- } else if (var->bits_per_pixel == 8) {
- if (!par->isVGA)
- return -EINVAL; /* no support on EGA */
- shift = 2;
- if (var->nonstd) {
- mode = MODE_8BPP | MODE_CFB;
- maxmem = 65536;
- } else {
- mode = MODE_SKIP4 | MODE_8BPP | MODE_CFB;
- maxmem = 16384;
- }
- } else
- return -EINVAL;
-
- xres = (var->xres + 7) & ~7;
- vxres = (var->xres_virtual + 0xF) & ~0xF;
- xoffset = (var->xoffset + 7) & ~7;
- left = (var->left_margin + 7) & ~7;
- right = (var->right_margin + 7) & ~7;
- hslen = (var->hsync_len + 7) & ~7;
-
- if (vxres < xres)
- vxres = xres;
- if (xres + xoffset > vxres)
- xoffset = vxres - xres;
-
- var->xres = xres;
- var->right_margin = right;
- var->hsync_len = hslen;
- var->left_margin = left;
- var->xres_virtual = vxres;
- var->xoffset = xoffset;
-
- xres >>= shift;
- right >>= shift;
- hslen >>= shift;
- left >>= shift;
- vxres >>= shift;
- xtotal = xres + right + hslen + left;
- if (xtotal >= 256)
- FAIL("xtotal too big");
- if (hslen > 32)
- FAIL("hslen too big");
- if (right + hslen + left > 64)
- FAIL("hblank too big");
- par->crtc[VGA_CRTC_H_TOTAL] = xtotal - 5;
- par->crtc[VGA_CRTC_H_BLANK_START] = xres - 1;
- par->crtc[VGA_CRTC_H_DISP] = xres - 1;
- pos = xres + right;
- par->crtc[VGA_CRTC_H_SYNC_START] = pos;
- pos += hslen;
- par->crtc[VGA_CRTC_H_SYNC_END] = pos & 0x1F;
- pos += left - 2; /* blank_end + 2 <= total + 5 */
- par->crtc[VGA_CRTC_H_BLANK_END] = (pos & 0x1F) | 0x80;
- if (pos & 0x20)
- par->crtc[VGA_CRTC_H_SYNC_END] |= 0x80;
-
- yres = var->yres;
- lower = var->lower_margin;
- vslen = var->vsync_len;
- upper = var->upper_margin;
- vyres = var->yres_virtual;
- yoffset = var->yoffset;
-
- if (yres > vyres)
- vyres = yres;
- if (vxres * vyres > maxmem) {
- vyres = maxmem / vxres;
- if (vyres < yres)
- return -ENOMEM;
- }
- if (yoffset + yres > vyres)
- yoffset = vyres - yres;
- var->yres = yres;
- var->lower_margin = lower;
- var->vsync_len = vslen;
- var->upper_margin = upper;
- var->yres_virtual = vyres;
- var->yoffset = yoffset;
-
- if (var->vmode & FB_VMODE_DOUBLE) {
- yres <<= 1;
- lower <<= 1;
- vslen <<= 1;
- upper <<= 1;
- }
- ytotal = yres + lower + vslen + upper;
- if (ytotal > 1024) {
- ytotal >>= 1;
- yres >>= 1;
- lower >>= 1;
- vslen >>= 1;
- upper >>= 1;
- rMode = 0x04;
- } else
- rMode = 0x00;
- if (ytotal > 1024)
- FAIL("ytotal too big");
- if (vslen > 16)
- FAIL("vslen too big");
- par->crtc[VGA_CRTC_V_TOTAL] = ytotal - 2;
- r7 = 0x10; /* disable linecompare */
- if (ytotal & 0x100) r7 |= 0x01;
- if (ytotal & 0x200) r7 |= 0x20;
- par->crtc[VGA_CRTC_PRESET_ROW] = 0;
- par->crtc[VGA_CRTC_MAX_SCAN] = 0x40; /* 1 scanline, no linecmp */
- if (var->vmode & FB_VMODE_DOUBLE)
- par->crtc[VGA_CRTC_MAX_SCAN] |= 0x80;
- par->crtc[VGA_CRTC_CURSOR_START] = 0x20;
- par->crtc[VGA_CRTC_CURSOR_END] = 0x00;
- if ((mode & (MODE_CFB | MODE_8BPP)) == MODE_CFB)
- xoffset--;
- pos = yoffset * vxres + (xoffset >> shift);
- par->crtc[VGA_CRTC_START_HI] = pos >> 8;
- par->crtc[VGA_CRTC_START_LO] = pos & 0xFF;
- par->crtc[VGA_CRTC_CURSOR_HI] = 0x00;
- par->crtc[VGA_CRTC_CURSOR_LO] = 0x00;
- pos = yres - 1;
- par->crtc[VGA_CRTC_V_DISP_END] = pos & 0xFF;
- par->crtc[VGA_CRTC_V_BLANK_START] = pos & 0xFF;
- if (pos & 0x100)
- r7 |= 0x0A; /* 0x02 -> DISP_END, 0x08 -> BLANK_START */
- if (pos & 0x200) {
- r7 |= 0x40; /* 0x40 -> DISP_END */
- par->crtc[VGA_CRTC_MAX_SCAN] |= 0x20; /* BLANK_START */
- }
- pos += lower;
- par->crtc[VGA_CRTC_V_SYNC_START] = pos & 0xFF;
- if (pos & 0x100)
- r7 |= 0x04;
- if (pos & 0x200)
- r7 |= 0x80;
- pos += vslen;
- par->crtc[VGA_CRTC_V_SYNC_END] = (pos & 0x0F) & ~0x10; /* disabled IRQ */
- pos += upper - 1; /* blank_end + 1 <= ytotal + 2 */
- par->crtc[VGA_CRTC_V_BLANK_END] = pos & 0xFF; /* 0x7F for original VGA,
- but some SVGA chips requires all 8 bits to set */
- if (vxres >= 512)
- FAIL("vxres too long");
- par->crtc[VGA_CRTC_OFFSET] = vxres >> 1;
- if (mode & MODE_SKIP4)
- par->crtc[VGA_CRTC_UNDERLINE] = 0x5F; /* 256, cfb8 */
- else
- par->crtc[VGA_CRTC_UNDERLINE] = 0x1F; /* 16, vgap */
- par->crtc[VGA_CRTC_MODE] = rMode | ((mode & MODE_TEXT) ? 0xA3 : 0xE3);
- par->crtc[VGA_CRTC_LINE_COMPARE] = 0xFF;
- par->crtc[VGA_CRTC_OVERFLOW] = r7;
-
- par->vss = 0x00; /* 3DA */
-
- par->misc = 0xE3; /* enable CPU, ports 0x3Dx, positive sync */
- if (var->sync & FB_SYNC_HOR_HIGH_ACT)
- par->misc &= ~0x40;
- if (var->sync & FB_SYNC_VERT_HIGH_ACT)
- par->misc &= ~0x80;
-
- par->mode = mode;
-
- if (mode & MODE_8BPP)
- /* pixel clock == vga clock / 2 */
- vga16fb_clock_chip(par, var->pixclock, info, 1, 2);
- else
- /* pixel clock == vga clock */
- vga16fb_clock_chip(par, var->pixclock, info, 1, 1);
-
- 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;
- var->transp.length = 0;
- var->activate = FB_ACTIVATE_NOW;
- var->height = -1;
- var->width = -1;
- var->accel_flags = 0;
- return 0;
-}
-#undef FAIL
-
-static int vga16fb_set_par(struct fb_info *info)
-{
- struct vga16fb_par *par = info->par;
- u8 gdc[VGA_GFX_C];
- u8 seq[VGA_SEQ_C];
- u8 atc[VGA_ATT_C];
- int fh, i;
-
- seq[VGA_SEQ_CLOCK_MODE] = 0x01 | par->clkdiv;
- if (par->mode & MODE_TEXT)
- seq[VGA_SEQ_PLANE_WRITE] = 0x03;
- else
- seq[VGA_SEQ_PLANE_WRITE] = 0x0F;
- seq[VGA_SEQ_CHARACTER_MAP] = 0x00;
- if (par->mode & MODE_TEXT)
- seq[VGA_SEQ_MEMORY_MODE] = 0x03;
- else if (par->mode & MODE_SKIP4)
- seq[VGA_SEQ_MEMORY_MODE] = 0x0E;
- else
- seq[VGA_SEQ_MEMORY_MODE] = 0x06;
-
- gdc[VGA_GFX_SR_VALUE] = 0x00;
- gdc[VGA_GFX_SR_ENABLE] = 0x00;
- gdc[VGA_GFX_COMPARE_VALUE] = 0x00;
- gdc[VGA_GFX_DATA_ROTATE] = 0x00;
- gdc[VGA_GFX_PLANE_READ] = 0;
- if (par->mode & MODE_TEXT) {
- gdc[VGA_GFX_MODE] = 0x10;
- gdc[VGA_GFX_MISC] = 0x06;
- } else {
- if (par->mode & MODE_CFB)
- gdc[VGA_GFX_MODE] = 0x40;
- else
- gdc[VGA_GFX_MODE] = 0x00;
- gdc[VGA_GFX_MISC] = 0x05;
- }
- gdc[VGA_GFX_COMPARE_MASK] = 0x0F;
- gdc[VGA_GFX_BIT_MASK] = 0xFF;
-
- for (i = 0x00; i < 0x10; i++)
- atc[i] = i;
- if (par->mode & MODE_TEXT)
- atc[VGA_ATC_MODE] = 0x04;
- else if (par->mode & MODE_8BPP)
- atc[VGA_ATC_MODE] = 0x41;
- else
- atc[VGA_ATC_MODE] = 0x81;
- atc[VGA_ATC_OVERSCAN] = 0x00; /* 0 for EGA, 0xFF for VGA */
- atc[VGA_ATC_PLANE_ENABLE] = 0x0F;
- if (par->mode & MODE_8BPP)
- atc[VGA_ATC_PEL] = (info->var.xoffset & 3) << 1;
- 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]
- & ~0x1F) | (fh - 1);
- }
-
- vga_io_w(VGA_MIS_W, vga_io_r(VGA_MIS_R) | 0x01);
-
- /* Enable graphics register modification */
- if (!par->isVGA) {
- 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);
-
- if (par->isVGA)
- vga_io_w(VGA_PEL_MSK, par->pel_msk);
-
- /* write sequencer registers */
- vga_io_wseq(VGA_SEQ_CLOCK_MODE, seq[VGA_SEQ_CLOCK_MODE] | 0x20);
- for (i = 2; i < VGA_SEQ_C; i++) {
- vga_io_wseq(i, seq[i]);
- }
-
- /* synchronous reset off */
- vga_io_wseq(0x00, 0x03);
-
- /* deprotect CRT registers 0-7 */
- vga_io_wcrt(VGA_CRTC_V_SYNC_END, par->crtc[VGA_CRTC_V_SYNC_END]);
-
- /* write CRT registers */
- 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 */
- vga_io_wattr(i, atc[i]);
- }
-
- /* Wait for screen to stabilize. */
- mdelay(50);
-
- vga_io_wseq(VGA_SEQ_CLOCK_MODE, seq[VGA_SEQ_CLOCK_MODE]);
-
- vga_io_r(VGA_IS1_RC);
- vga_io_w(VGA_ATT_IW, 0x20);
-
- vga16fb_update_fix(info);
- return 0;
-}
-
-static void ega16_setpalette(int regno, unsigned red, unsigned green, unsigned blue)
-{
- 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);
- vga_io_r(VGA_IS1_RC); /* ! 0x3BA */
- vga_io_wattr(regno, val);
- vga_io_r(VGA_IS1_RC); /* some clones need it */
- vga_io_w(VGA_ATT_IW, 0x20); /* unblank screen */
-}
-
-static void vga16_setpalette(int regno, unsigned red, unsigned green, unsigned blue)
-{
- outb(regno, VGA_PEL_IW);
- outb(red >> 10, VGA_PEL_D);
- outb(green >> 10, VGA_PEL_D);
- outb(blue >> 10, VGA_PEL_D);
-}
-
-static int vga16fb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info)
-{
- struct vga16fb_par *par = info->par;
- int gray;
-
- /*
- * Set a single color register. The values supplied are
- * already rounded down to the hardware's capabilities
- * (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)
- vga16_setpalette(regno,red,green,blue);
- else
- ega16_setpalette(regno,red,green,blue);
- return 0;
-}
-
-static int vga16fb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info)
-{
- vga16fb_pan_var(info, var);
- return 0;
-}
-
-/* The following VESA blanking code is taken from vgacon.c. The VGA
- blanking code was originally by Huang shi chao, and modified by
- Christoph Rimek (chrimek@toppoint.de) and todd j. derr
- (tjd@barefoot.org) for Linux. */
-
-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);
- //sti();
-
- par->vga_state.HorizontalTotal = vga_io_rcrt(0x00); /* HorizontalTotal */
- par->vga_state.HorizDisplayEnd = vga_io_rcrt(0x01); /* HorizDisplayEnd */
- par->vga_state.StartHorizRetrace = vga_io_rcrt(0x04); /* StartHorizRetrace */
- par->vga_state.EndHorizRetrace = vga_io_rcrt(0x05); /* EndHorizRetrace */
- par->vga_state.Overflow = vga_io_rcrt(0x07); /* Overflow */
- par->vga_state.StartVertRetrace = vga_io_rcrt(0x10); /* StartVertRetrace */
- par->vga_state.EndVertRetrace = vga_io_rcrt(0x11); /* EndVertRetrace */
- par->vga_state.ModeControl = vga_io_rcrt(0x17); /* ModeControl */
- par->vga_state.ClockingMode = vga_io_rseq(0x01); /* ClockingMode */
- }
-
- /* assure that video is enabled */
- /* "0x20" is VIDEO_ENABLE_bit in register 01 of sequencer */
- vga_io_wseq(0x01, par->vga_state.ClockingMode | 0x20);
-
- /* test for vertical retrace in process.... */
- if ((par->vga_state.CrtMiscIO & 0x80) == 0x80)
- vga_io_w(VGA_MIS_W, par->vga_state.CrtMiscIO & 0xef);
-
- /*
- * Set <End of vertical retrace> to minimum (0) and
- * <Start of vertical Retrace> to maximum (incl. overflow)
- * Result: turn off vertical sync (VSync) pulse.
- */
- if (mode & FB_BLANK_VSYNC_SUSPEND) {
- vga_io_wcrt(VGA_CRTC_V_SYNC_START, 0xff);
- vga_io_wcrt(VGA_CRTC_V_SYNC_END, 0x40);
- /* bits 9,10 of vert. retrace */
- vga_io_wcrt(VGA_CRTC_OVERFLOW, par->vga_state.Overflow | 0x84);
- }
-
- if (mode & FB_BLANK_HSYNC_SUSPEND) {
- /*
- * Set <End of horizontal retrace> to minimum (0) and
- * <Start of horizontal Retrace> to maximum
- * Result: turn off horizontal sync (HSync) pulse.
- */
- vga_io_wcrt(VGA_CRTC_H_SYNC_START, 0xff);
- vga_io_wcrt(VGA_CRTC_H_SYNC_END, 0x00);
- }
-
- /* restore both index registers */
- outb_p(SeqCtrlIndex, VGA_SEQ_I);
- outb_p(CrtCtrlIndex, VGA_CRT_IC);
-}
-
-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);
-
- /* HorizontalTotal */
- vga_io_wcrt(0x00, par->vga_state.HorizontalTotal);
- /* HorizDisplayEnd */
- vga_io_wcrt(0x01, par->vga_state.HorizDisplayEnd);
- /* StartHorizRetrace */
- vga_io_wcrt(0x04, par->vga_state.StartHorizRetrace);
- /* EndHorizRetrace */
- vga_io_wcrt(0x05, par->vga_state.EndHorizRetrace);
- /* Overflow */
- vga_io_wcrt(0x07, par->vga_state.Overflow);
- /* StartVertRetrace */
- vga_io_wcrt(0x10, par->vga_state.StartVertRetrace);
- /* EndVertRetrace */
- vga_io_wcrt(0x11, par->vga_state.EndVertRetrace);
- /* ModeControl */
- vga_io_wcrt(0x17, par->vga_state.ModeControl);
- /* ClockingMode */
- vga_io_wseq(0x01, par->vga_state.ClockingMode);
-
- /* restore index/control registers */
- vga_io_w(VGA_SEQ_I, SeqCtrlIndex);
- vga_io_w(VGA_CRT_IC, CrtCtrlIndex);
-}
-
-static void vga_pal_blank(void)
-{
- int i;
-
- for (i=0; i<16; i++) {
- outb_p(i, VGA_PEL_IW);
- outb_p(0, VGA_PEL_D);
- outb_p(0, VGA_PEL_D);
- outb_p(0, VGA_PEL_D);
- }
-}
-
-/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
-static int vga16fb_blank(int blank, struct fb_info *info)
-{
- struct vga16fb_par *par = info->par;
-
- switch (blank) {
- case FB_BLANK_UNBLANK: /* Unblank */
- if (par->vesa_blanked) {
- vga_vesa_unblank(par);
- par->vesa_blanked = 0;
- }
- if (par->palette_blanked) {
- par->palette_blanked = 0;
- }
- break;
- case FB_BLANK_NORMAL: /* blank */
- vga_pal_blank();
- par->palette_blanked = 1;
- break;
- default: /* VESA blanking */
- vga_vesa_blank(par, blank);
- par->vesa_blanked = 1;
- break;
- }
- return 0;
-}
-
-static void vga_8planes_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
-{
- u32 dx = rect->dx, width = rect->width;
- char oldindex = getindex();
- char oldmode = setmode(0x40);
- char oldmask = selectmask();
- int line_ofs, height;
- char oldop, oldsr;
- char __iomem *where;
-
- dx /= 4;
- where = info->screen_base + dx + rect->dy * info->fix.line_length;
-
- if (rect->rop == ROP_COPY) {
- oldop = setop(0);
- oldsr = setsr(0);
-
- width /= 4;
- line_ofs = info->fix.line_length - width;
- setmask(0xff);
-
- height = rect->height;
-
- while (height--) {
- int x;
-
- /* we can do memset... */
- for (x = width; x > 0; --x) {
- writeb(rect->color, where);
- where++;
- }
- where += line_ofs;
- }
- } else {
- char oldcolor = setcolor(0xf);
- int y;
-
- oldop = setop(0x18);
- oldsr = setsr(0xf);
- setmask(0x0F);
- for (y = 0; y < rect->height; y++) {
- rmw(where);
- rmw(where+1);
- where += info->fix.line_length;
- }
- setcolor(oldcolor);
- }
- setmask(oldmask);
- setsr(oldsr);
- setop(oldop);
- setmode(oldmode);
- setindex(oldindex);
-}
-
-static void vga16fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
-{
- int x, x2, y2, vxres, vyres, width, height, line_ofs;
- char __iomem *dst;
-
- vxres = info->var.xres_virtual;
- vyres = info->var.yres_virtual;
-
- if (!rect->width || !rect->height || rect->dx > vxres || rect->dy > vyres)
- return;
-
- /* We could use hardware clipping but on many cards you get around
- * hardware clipping by writing to framebuffer directly. */
-
- x2 = rect->dx + rect->width;
- y2 = rect->dy + rect->height;
- x2 = x2 < vxres ? x2 : vxres;
- y2 = y2 < vyres ? y2 : vyres;
- width = x2 - rect->dx;
-
- switch (info->fix.type) {
- case FB_TYPE_VGA_PLANES:
- if (info->fix.type_aux == FB_AUX_VGA_PLANES_VGA4) {
-
- height = y2 - rect->dy;
- width = rect->width/8;
-
- line_ofs = info->fix.line_length - width;
- dst = info->screen_base + (rect->dx/8) + rect->dy * info->fix.line_length;
-
- switch (rect->rop) {
- case ROP_COPY:
- setmode(0);
- setop(0);
- setsr(0xf);
- setcolor(rect->color);
- selectmask();
-
- setmask(0xff);
-
- while (height--) {
- for (x = 0; x < width; x++) {
- writeb(0, dst);
- dst++;
- }
- dst += line_ofs;
- }
- break;
- case ROP_XOR:
- setmode(0);
- setop(0x18);
- setsr(0xf);
- setcolor(0xf);
- selectmask();
-
- setmask(0xff);
- while (height--) {
- for (x = 0; x < width; x++) {
- rmw(dst);
- dst++;
- }
- dst += line_ofs;
- }
- break;
- }
- } else
- vga_8planes_fillrect(info, rect);
- break;
- case FB_TYPE_PACKED_PIXELS:
- default:
- cfb_fillrect(info, rect);
- break;
- }
-}
-
-static void vga_8planes_copyarea(struct fb_info *info, const struct fb_copyarea *area)
-{
- char oldindex = getindex();
- char oldmode = setmode(0x41);
- char oldop = setop(0);
- char oldsr = setsr(0xf);
- int height, line_ofs, x;
- u32 sx, dx, width;
- char __iomem *dest;
- char __iomem *src;
-
- height = area->height;
-
- sx = area->sx / 4;
- dx = area->dx / 4;
- width = area->width / 4;
-
- if (area->dy < area->sy || (area->dy == area->sy && dx < sx)) {
- line_ofs = info->fix.line_length - width;
- dest = info->screen_base + dx + area->dy * info->fix.line_length;
- src = info->screen_base + sx + area->sy * info->fix.line_length;
- while (height--) {
- for (x = 0; x < width; x++) {
- readb(src);
- writeb(0, dest);
- src++;
- dest++;
- }
- src += line_ofs;
- dest += line_ofs;
- }
- } else {
- line_ofs = info->fix.line_length - width;
- dest = info->screen_base + dx + width +
- (area->dy + height - 1) * info->fix.line_length;
- src = info->screen_base + sx + width +
- (area->sy + height - 1) * info->fix.line_length;
- while (height--) {
- for (x = 0; x < width; x++) {
- --src;
- --dest;
- readb(src);
- writeb(0, dest);
- }
- src -= line_ofs;
- dest -= line_ofs;
- }
- }
-
- setsr(oldsr);
- setop(oldop);
- setmode(oldmode);
- setindex(oldindex);
-}
-
-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;
- int x, x2, y2, old_dx, old_dy, vxres, vyres;
- int height, width, line_ofs;
- char __iomem *dst = NULL;
- char __iomem *src = NULL;
-
- vxres = info->var.xres_virtual;
- vyres = info->var.yres_virtual;
-
- if (area->dx > vxres || area->sx > vxres || area->dy > vyres ||
- area->sy > vyres)
- return;
-
- /* clip the destination */
- old_dx = area->dx;
- old_dy = area->dy;
-
- /*
- * We could use hardware clipping but on many cards you get around
- * hardware clipping by writing to framebuffer directly.
- */
- x2 = area->dx + area->width;
- y2 = area->dy + area->height;
- dx = area->dx > 0 ? area->dx : 0;
- dy = area->dy > 0 ? area->dy : 0;
- x2 = x2 < vxres ? x2 : vxres;
- y2 = y2 < vyres ? y2 : vyres;
- width = x2 - dx;
- height = y2 - dy;
-
- if (sx + dx < old_dx || sy + dy < old_dy)
- return;
-
- /* update sx1,sy1 */
- sx += (dx - old_dx);
- sy += (dy - old_dy);
-
- /* the source must be completely inside the virtual screen */
- if (sx + width > vxres || sy + height > vyres)
- return;
-
- switch (info->fix.type) {
- case FB_TYPE_VGA_PLANES:
- if (info->fix.type_aux == FB_AUX_VGA_PLANES_VGA4) {
- width = width/8;
- height = height;
- line_ofs = info->fix.line_length - width;
-
- setmode(1);
- setop(0);
- setsr(0xf);
-
- if (dy < sy || (dy == sy && dx < sx)) {
- dst = info->screen_base + (dx/8) + dy * info->fix.line_length;
- src = info->screen_base + (sx/8) + sy * info->fix.line_length;
- while (height--) {
- for (x = 0; x < width; x++) {
- readb(src);
- writeb(0, dst);
- dst++;
- src++;
- }
- src += line_ofs;
- dst += line_ofs;
- }
- } else {
- dst = info->screen_base + (dx/8) + width +
- (dy + height - 1) * info->fix.line_length;
- src = info->screen_base + (sx/8) + width +
- (sy + height - 1) * info->fix.line_length;
- while (height--) {
- for (x = 0; x < width; x++) {
- dst--;
- src--;
- readb(src);
- writeb(0, dst);
- }
- src -= line_ofs;
- dst -= line_ofs;
- }
- }
- } else
- vga_8planes_copyarea(info, area);
- break;
- case FB_TYPE_PACKED_PIXELS:
- default:
- cfb_copyarea(info, area);
- break;
- }
-}
-
-#define TRANS_MASK_LOW {0x0,0x8,0x4,0xC,0x2,0xA,0x6,0xE,0x1,0x9,0x5,0xD,0x3,0xB,0x7,0xF}
-#define TRANS_MASK_HIGH {0x000, 0x800, 0x400, 0xC00, 0x200, 0xA00, 0x600, 0xE00, \
- 0x100, 0x900, 0x500, 0xD00, 0x300, 0xB00, 0x700, 0xF00}
-
-#if defined(__LITTLE_ENDIAN)
-static const u16 transl_l[] = TRANS_MASK_LOW;
-static const u16 transl_h[] = TRANS_MASK_HIGH;
-#elif defined(__BIG_ENDIAN)
-static const u16 transl_l[] = TRANS_MASK_HIGH;
-static const u16 transl_h[] = TRANS_MASK_LOW;
-#else
-#error "Only __BIG_ENDIAN and __LITTLE_ENDIAN are supported in vga-planes"
-#endif
-
-static void vga_8planes_imageblit(struct fb_info *info, const struct fb_image *image)
-{
- char oldindex = getindex();
- char oldmode = setmode(0x40);
- char oldop = setop(0);
- char oldsr = setsr(0);
- char oldmask = selectmask();
- const char *cdat = image->data;
- u32 dx = image->dx;
- char __iomem *where;
- int y;
-
- dx /= 4;
- where = info->screen_base + dx + image->dy * info->fix.line_length;
-
- setmask(0xff);
- writeb(image->bg_color, where);
- readb(where);
- selectmask();
- setmask(image->fg_color ^ image->bg_color);
- setmode(0x42);
- setop(0x18);
- for (y = 0; y < image->height; y++, where += info->fix.line_length)
- writew(transl_h[cdat[y]&0xF] | transl_l[cdat[y] >> 4], where);
- setmask(oldmask);
- setsr(oldsr);
- setop(oldop);
- setmode(oldmode);
- setindex(oldindex);
-}
-
-static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *image)
-{
- char __iomem *where = info->screen_base + (image->dx/8) +
- image->dy * info->fix.line_length;
- struct vga16fb_par *par = info->par;
- char *cdat = (char *) image->data;
- char __iomem *dst;
- int x, y;
-
- switch (info->fix.type) {
- case FB_TYPE_VGA_PLANES:
- if (info->fix.type_aux == FB_AUX_VGA_PLANES_VGA4) {
- if (par->isVGA) {
- setmode(2);
- setop(0);
- setsr(0xf);
- setcolor(image->fg_color);
- selectmask();
-
- setmask(0xff);
- writeb(image->bg_color, where);
- rmb();
- readb(where); /* fill latches */
- setmode(3);
- wmb();
- for (y = 0; y < image->height; y++) {
- dst = where;
- for (x = image->width/8; x--;)
- writeb(*cdat++, dst++);
- where += info->fix.line_length;
- }
- wmb();
- } else {
- setmode(0);
- setop(0);
- setsr(0xf);
- setcolor(image->bg_color);
- selectmask();
-
- setmask(0xff);
- for (y = 0; y < image->height; y++) {
- dst = where;
- for (x=image->width/8; x--;){
- rmw(dst);
- setcolor(image->fg_color);
- selectmask();
- if (*cdat) {
- setmask(*cdat++);
- rmw(dst++);
- }
- }
- where += info->fix.line_length;
- }
- }
- } else
- vga_8planes_imageblit(info, image);
- break;
- case FB_TYPE_PACKED_PIXELS:
- default:
- cfb_imageblit(info, image);
- break;
- }
-}
-
-static void vga_imageblit_color(struct fb_info *info, const struct fb_image *image)
-{
- /*
- * Draw logo
- */
- struct vga16fb_par *par = info->par;
- char __iomem *where =
- info->screen_base + image->dy * info->fix.line_length +
- image->dx/8;
- const char *cdat = image->data;
- char __iomem *dst;
- int x, y;
-
- switch (info->fix.type) {
- case FB_TYPE_VGA_PLANES:
- if (info->fix.type_aux == FB_AUX_VGA_PLANES_VGA4 &&
- par->isVGA) {
- setsr(0xf);
- setop(0);
- setmode(0);
-
- for (y = 0; y < image->height; y++) {
- for (x = 0; x < image->width; x++) {
- dst = where + x/8;
-
- setcolor(*cdat);
- selectmask();
- setmask(1 << (7 - (x % 8)));
- fb_readb(dst);
- fb_writeb(0, dst);
-
- cdat++;
- }
- where += info->fix.line_length;
- }
- }
- break;
- case FB_TYPE_PACKED_PIXELS:
- cfb_imageblit(info, image);
- break;
- default:
- break;
- }
-}
-
-static void vga16fb_imageblit(struct fb_info *info, const struct fb_image *image)
-{
- if (image->depth == 1)
- vga_imageblit_expand(info, image);
- else
- vga_imageblit_color(info, image);
-}
-
-static void vga16fb_destroy(struct fb_info *info)
-{
- iounmap(info->screen_base);
- fb_dealloc_cmap(&info->cmap);
- /* XXX unshare VGA regions */
- framebuffer_release(info);
-}
-
-static struct fb_ops vga16fb_ops = {
- .owner = THIS_MODULE,
- .fb_open = vga16fb_open,
- .fb_release = vga16fb_release,
- .fb_destroy = vga16fb_destroy,
- .fb_check_var = vga16fb_check_var,
- .fb_set_par = vga16fb_set_par,
- .fb_setcolreg = vga16fb_setcolreg,
- .fb_pan_display = vga16fb_pan_display,
- .fb_blank = vga16fb_blank,
- .fb_fillrect = vga16fb_fillrect,
- .fb_copyarea = vga16fb_copyarea,
- .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 fb_info *info;
- struct vga16fb_par *par;
- int i;
- int ret = 0;
-
- printk(KERN_DEBUG "vga16fb: initializing\n");
- info = framebuffer_alloc(sizeof(struct vga16fb_par), &dev->dev);
-
- if (!info) {
- ret = -ENOMEM;
- goto err_fb_alloc;
- }
- info->apertures = alloc_apertures(1);
- if (!info->apertures) {
- ret = -ENOMEM;
- 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);
-
- if (!info->screen_base) {
- printk(KERN_ERR "vga16fb: unable to map device\n");
- ret = -ENOMEM;
- goto err_ioremap;
- }
-
- printk(KERN_INFO "vga16fb: mapped to 0x%p\n", info->screen_base);
- par = info->par;
-
- par->isVGA = screen_info.orig_video_isVGA;
- 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;
-
- /* name should not depend on EGA/VGA */
- info->fbops = &vga16fb_ops;
- info->var = vga16fb_defined;
- info->fix = vga16fb_fix;
- /* supports rectangles with widths of multiples of 8 */
- info->pixmap.blit_x = 1 << 7 | 1 << 15 | 1 << 23 | 1 << 31;
- info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE |
- FBINFO_HWACCEL_YPAN;
-
- i = (info->var.bits_per_pixel == 8) ? 256 : 16;
- ret = fb_alloc_cmap(&info->cmap, i, 0);
- if (ret) {
- printk(KERN_ERR "vga16fb: unable to allocate colormap\n");
- ret = -ENOMEM;
- goto err_alloc_cmap;
- }
-
- if (vga16fb_check_var(&info->var, info)) {
- printk(KERN_ERR "vga16fb: unable to validate variable\n");
- ret = -EINVAL;
- goto err_check_var;
- }
-
- vga16fb_update_fix(info);
-
- info->apertures->ranges[0].base = VGA_FB_PHYS;
- info->apertures->ranges[0].size = VGA_FB_PHYS_LEN;
-
- if (register_framebuffer(info) < 0) {
- printk(KERN_ERR "vga16fb: unable to register framebuffer\n");
- ret = -EINVAL;
- goto err_check_var;
- }
-
- fb_info(info, "%s frame buffer device\n", info->fix.id);
- platform_set_drvdata(dev, info);
-
- return 0;
-
- err_check_var:
- fb_dealloc_cmap(&info->cmap);
- err_alloc_cmap:
- iounmap(info->screen_base);
- err_ioremap:
- framebuffer_release(info);
- err_fb_alloc:
- return ret;
-}
-
-static int vga16fb_remove(struct platform_device *dev)
-{
- struct fb_info *info = platform_get_drvdata(dev);
-
- if (info)
- unregister_framebuffer(info);
-
- return 0;
-}
-
-static struct platform_driver vga16fb_driver = {
- .probe = vga16fb_probe,
- .remove = vga16fb_remove,
- .driver = {
- .name = "vga16fb",
- },
-};
-
-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 = 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_DESCRIPTION("Legacy VGA framebuffer device driver");
-MODULE_LICENSE("GPL");
-module_init(vga16fb_init);
-module_exit(vga16fb_exit);
-
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
-