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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/video/sun3fb.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/video/sun3fb.c')
-rw-r--r-- | drivers/video/sun3fb.c | 704 |
1 files changed, 704 insertions, 0 deletions
diff --git a/drivers/video/sun3fb.c b/drivers/video/sun3fb.c new file mode 100644 index 000000000000..9b36b9df535f --- /dev/null +++ b/drivers/video/sun3fb.c @@ -0,0 +1,704 @@ +/* + * linux/drivers/video/sun3fb.c -- Frame buffer driver for Sun3 + * + * (C) 1998 Thomas Bogendoerfer + * + * This driver is bases on sbusfb.c, which is + * + * Copyright (C) 1998 Jakub Jelinek + * + * This driver is partly based on the Open Firmware console driver + * + * Copyright (C) 1997 Geert Uytterhoeven + * + * and SPARC console subsystem + * + * Copyright (C) 1995 Peter Zaitcev (zaitcev@yahoo.com) + * Copyright (C) 1995-1997 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1995-1996 Miguel de Icaza (miguel@nuclecu.unam.mx) + * Copyright (C) 1996 Dave Redman (djhr@tadpole.co.uk) + * Copyright (C) 1996-1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be) + * + * 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/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/fb.h> +#include <linux/selection.h> +#include <linux/init.h> +#include <linux/console.h> +#include <linux/kd.h> +#include <linux/vt_kern.h> + +#include <asm/uaccess.h> +#include <asm/pgtable.h> /* io_remap_page_range() */ + +#ifdef CONFIG_SUN3 +#include <asm/oplib.h> +#include <asm/machines.h> +#include <asm/idprom.h> + +#define CGFOUR_OBMEM_ADDR 0x1f300000 +#define BWTWO_OBMEM_ADDR 0x1f000000 +#define BWTWO_OBMEM50_ADDR 0x00100000 + +#endif +#ifdef CONFIG_SUN3X +#include <asm/sun3x.h> +#endif +#include <video/sbusfb.h> + +#define DEFAULT_CURSOR_BLINK_RATE (2*HZ/5) + +#define CURSOR_SHAPE 1 +#define CURSOR_BLINK 2 + +#define mymemset(x,y) memset(x,0,y) + + /* + * Interface used by the world + */ + +int sun3fb_init(void); +void sun3fb_setup(char *options); + +static char fontname[40] __initdata = { 0 }; +static int curblink __initdata = 1; + +static int sun3fb_get_fix(struct fb_fix_screeninfo *fix, int con, + struct fb_info *info); +static int sun3fb_get_var(struct fb_var_screeninfo *var, int con, + struct fb_info *info); +static int sun3fb_set_var(struct fb_var_screeninfo *var, int con, + struct fb_info *info); +static int sun3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con, + struct fb_info *info); +static int sun3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con, + struct fb_info *info); +static int sun3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *info); +static int sun3fb_blank(int blank, struct fb_info *info); +static void sun3fb_cursor(struct display *p, int mode, int x, int y); +static void sun3fb_clear_margin(struct display *p, int s); + + /* + * Interface to the low level console driver + */ + +static int sun3fbcon_switch(int con, struct fb_info *info); +static int sun3fbcon_updatevar(int con, struct fb_info *info); + + /* + * Internal routines + */ + +static int sun3fb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue, + u_int *transp, struct fb_info *info); + +static struct fb_ops sun3fb_ops = { + .owner = THIS_MODULE, + .fb_get_fix = sun3fb_get_fix, + .fb_get_var = sun3fb_get_var, + .fb_set_var = sun3fb_set_var, + .fb_get_cmap = sun3fb_get_cmap, + .fb_set_cmap = sun3fb_set_cmap, + .fb_setcolreg = sun3fb_setcolreg, + .fb_blank = sun3fb_blank, +}; + +static void sun3fb_clear_margin(struct display *p, int s) +{ + struct fb_info_sbusfb *fb = sbusfbinfod(p); + + return; + + if (fb->switch_from_graph) + (*fb->switch_from_graph)(fb); + if (fb->fill) { + unsigned short rects [16]; + + rects [0] = 0; + rects [1] = 0; + rects [2] = fb->var.xres_virtual; + rects [3] = fb->y_margin; + rects [4] = 0; + rects [5] = fb->y_margin; + rects [6] = fb->x_margin; + rects [7] = fb->var.yres_virtual; + rects [8] = fb->var.xres_virtual - fb->x_margin; + rects [9] = fb->y_margin; + rects [10] = fb->var.xres_virtual; + rects [11] = fb->var.yres_virtual; + rects [12] = fb->x_margin; + rects [13] = fb->var.yres_virtual - fb->y_margin; + rects [14] = fb->var.xres_virtual - fb->x_margin; + rects [15] = fb->var.yres_virtual; + (*fb->fill)(fb, p, s, 4, rects); + } else { + unsigned char *fb_base = fb->info.screen_base, *q; + int skip_bytes = fb->y_margin * fb->var.xres_virtual; + int scr_size = fb->var.xres_virtual * fb->var.yres_virtual; + int h, he, incr, size; + + he = fb->var.yres; + if (fb->var.bits_per_pixel == 1) { + fb_base -= (skip_bytes + fb->x_margin) / 8; + skip_bytes /= 8; + scr_size /= 8; + mymemset (fb_base, skip_bytes - fb->x_margin / 8); + mymemset (fb_base + scr_size - skip_bytes + fb->x_margin / 8, skip_bytes - fb->x_margin / 8); + incr = fb->var.xres_virtual / 8; + size = fb->x_margin / 8 * 2; + for (q = fb_base + skip_bytes - fb->x_margin / 8, h = 0; + h <= he; q += incr, h++) + mymemset (q, size); + } else { + fb_base -= (skip_bytes + fb->x_margin); + memset (fb_base, attr_bgcol(p,s), skip_bytes - fb->x_margin); + memset (fb_base + scr_size - skip_bytes + fb->x_margin, attr_bgcol(p,s), skip_bytes - fb->x_margin); + incr = fb->var.xres_virtual; + size = fb->x_margin * 2; + for (q = fb_base + skip_bytes - fb->x_margin, h = 0; + h <= he; q += incr, h++) + memset (q, attr_bgcol(p,s), size); + } + } +} + +static void sun3fb_disp_setup(struct display *p) +{ + struct fb_info_sbusfb *fb = sbusfbinfod(p); + + if (fb->setup) + fb->setup(p); + sun3fb_clear_margin(p, 0); +} + + /* + * Get the Fixed Part of the Display + */ + +static int sun3fb_get_fix(struct fb_fix_screeninfo *fix, int con, + struct fb_info *info) +{ + struct fb_info_sbusfb *fb = sbusfbinfo(info); + + memcpy(fix, &fb->fix, sizeof(struct fb_fix_screeninfo)); + return 0; +} + + /* + * Get the User Defined Part of the Display + */ + +static int sun3fb_get_var(struct fb_var_screeninfo *var, int con, + struct fb_info *info) +{ + struct fb_info_sbusfb *fb = sbusfbinfo(info); + + memcpy(var, &fb->var, sizeof(struct fb_var_screeninfo)); + return 0; +} + + /* + * Set the User Defined Part of the Display + */ + +static int sun3fb_set_var(struct fb_var_screeninfo *var, int con, + struct fb_info *info) +{ + struct fb_info_sbusfb *fb = sbusfbinfo(info); + + if (var->xres > fb->var.xres || var->yres > fb->var.yres || + var->xres_virtual > fb->var.xres_virtual || + var->yres_virtual > fb->var.yres_virtual || + var->bits_per_pixel != fb->var.bits_per_pixel || + var->nonstd || + (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) + return -EINVAL; + memcpy(var, &fb->var, sizeof(struct fb_var_screeninfo)); + return 0; +} + + /* + * Hardware cursor + */ + +static unsigned char hw_cursor_cmap[2] = { 0, 0xff }; + +static void +sun3fb_cursor_timer_handler(unsigned long dev_addr) +{ + struct fb_info_sbusfb *fb = (struct fb_info_sbusfb *)dev_addr; + + if (!fb->setcursor) return; + + if (fb->cursor.mode & CURSOR_BLINK) { + fb->cursor.enable ^= 1; + fb->setcursor(fb); + } + + fb->cursor.timer.expires = jiffies + fb->cursor.blink_rate; + add_timer(&fb->cursor.timer); +} + +static void sun3fb_cursor(struct display *p, int mode, int x, int y) +{ + struct fb_info_sbusfb *fb = sbusfbinfod(p); + + switch (mode) { + case CM_ERASE: + fb->cursor.mode &= ~CURSOR_BLINK; + fb->cursor.enable = 0; + (*fb->setcursor)(fb); + break; + + case CM_MOVE: + case CM_DRAW: + if (fb->cursor.mode & CURSOR_SHAPE) { + fb->cursor.size.fbx = fontwidth(p); + fb->cursor.size.fby = fontheight(p); + fb->cursor.chot.fbx = 0; + fb->cursor.chot.fby = 0; + fb->cursor.enable = 1; + memset (fb->cursor.bits, 0, sizeof (fb->cursor.bits)); + fb->cursor.bits[0][fontheight(p) - 2] = (0xffffffff << (32 - fontwidth(p))); + fb->cursor.bits[1][fontheight(p) - 2] = (0xffffffff << (32 - fontwidth(p))); + fb->cursor.bits[0][fontheight(p) - 1] = (0xffffffff << (32 - fontwidth(p))); + fb->cursor.bits[1][fontheight(p) - 1] = (0xffffffff << (32 - fontwidth(p))); + (*fb->setcursormap) (fb, hw_cursor_cmap, hw_cursor_cmap, hw_cursor_cmap); + (*fb->setcurshape) (fb); + } + fb->cursor.mode = CURSOR_BLINK; + if (fontwidthlog(p)) + fb->cursor.cpos.fbx = (x << fontwidthlog(p)) + fb->x_margin; + else + fb->cursor.cpos.fbx = (x * fontwidth(p)) + fb->x_margin; + if (fontheightlog(p)) + fb->cursor.cpos.fby = (y << fontheightlog(p)) + fb->y_margin; + else + fb->cursor.cpos.fby = (y * fontheight(p)) + fb->y_margin; + (*fb->setcursor)(fb); + break; + } +} + + /* + * Get the Colormap + */ + +static int sun3fb_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, sun3fb_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(1<<fb_display[con].var.bits_per_pixel), cmap, kspc ? 0 : 2); + return 0; +} + + /* + * Set the Colormap + */ + +static int sun3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con, + struct fb_info *info) +{ + int err; + + if (!fb_display[con].cmap.len) { /* no colormap allocated? */ + if ((err = fb_alloc_cmap(&fb_display[con].cmap, 1<<fb_display[con].var.bits_per_pixel, 0))) + return err; + } + if (con == info->currcon) { /* current console? */ + err = fb_set_cmap(cmap, kspc, info); + if (!err) { + struct fb_info_sbusfb *fb = sbusfbinfo(info); + + if (fb->loadcmap) + (*fb->loadcmap)(fb, &fb_display[con], cmap->start, cmap->len); + } + return err; + } else + fb_copy_cmap(cmap, &fb_display[con].cmap, kspc ? 0 : 1); + return 0; +} + + /* + * Setup: parse used options + */ + +void __init sun3fb_setup(char *options) +{ + char *p; + + for (p = options;;) { + if (!strncmp(p, "font=", 5)) { + int i; + + for (i = 0; i < sizeof(fontname) - 1; i++) + if (p[i+5] == ' ' || !p[i+5]) + break; + memcpy(fontname, p+5, i); + fontname[i] = 0; + } else if (!strncmp(p, "noblink", 7)) + curblink = 0; + while (*p && *p != ' ' && *p != ',') p++; + if (*p != ',') break; + p++; + } + + return; +} + +static int sun3fbcon_switch(int con, struct fb_info *info) +{ + int x_margin, y_margin; + struct fb_info_sbusfb *fb = sbusfbinfo(info); + int lastconsole; + + /* Do we have to save the colormap? */ + if (fb_display[info->currcon].cmap.len) + fb_get_cmap(&fb_display[info->currcon].cmap, 1, sun3fb_getcolreg, info); + + if (info->display_fg) { + lastconsole = info->display_fg->vc_num; + if (lastconsole != con && + (fontwidth(&fb_display[lastconsole]) != fontwidth(&fb_display[con]) || + fontheight(&fb_display[lastconsole]) != fontheight(&fb_display[con]))) + fb->cursor.mode |= CURSOR_SHAPE; + } + x_margin = (fb_display[con].var.xres_virtual - fb_display[con].var.xres) / 2; + y_margin = (fb_display[con].var.yres_virtual - fb_display[con].var.yres) / 2; + if (fb->margins) + fb->margins(fb, &fb_display[con], x_margin, y_margin); + if (fb->graphmode || fb->x_margin != x_margin || fb->y_margin != y_margin) { + fb->x_margin = x_margin; fb->y_margin = y_margin; + sun3fb_clear_margin(&fb_display[con], 0); + } + info->currcon = con; + /* Install new colormap */ + do_install_cmap(con, info); + return 0; +} + + /* + * Update the `var' structure (called by fbcon.c) + */ + +static int sun3fbcon_updatevar(int con, struct fb_info *info) +{ + /* Nothing */ + return 0; +} + + /* + * Blank the display. + */ + +static int sun3fb_blank(int blank, struct fb_info *info) +{ + struct fb_info_sbusfb *fb = sbusfbinfo(info); + + if (blank && fb->blank) + return fb->blank(fb); + else if (!blank && fb->unblank) + return fb->unblank(fb); + return 0; +} + + /* + * Read a single color register and split it into + * colors/transparent. Return != 0 for invalid regno. + */ + +static int sun3fb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue, + u_int *transp, struct fb_info *info) +{ + struct fb_info_sbusfb *fb = sbusfbinfo(info); + + if (!fb->color_map || regno > 255) + return 1; + *red = (fb->color_map CM(regno, 0)<<8) | fb->color_map CM(regno, 0); + *green = (fb->color_map CM(regno, 1)<<8) | fb->color_map CM(regno, 1); + *blue = (fb->color_map CM(regno, 2)<<8) | fb->color_map CM(regno, 2); + *transp = 0; + return 0; +} + + + /* + * 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. + */ + +static int sun3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *info) +{ + struct fb_info_sbusfb *fb = sbusfbinfo(info); + + if (!fb->color_map || regno > 255) + return 1; + red >>= 8; + green >>= 8; + blue >>= 8; + fb->color_map CM(regno, 0) = red; + fb->color_map CM(regno, 1) = green; + fb->color_map CM(regno, 2) = blue; + return 0; +} + +static int sun3fb_set_font(struct display *p, int width, int height) +{ + int w = p->var.xres_virtual, h = p->var.yres_virtual; + int depth = p->var.bits_per_pixel; + struct fb_info_sbusfb *fb = sbusfbinfod(p); + int x_margin, y_margin; + + if (depth > 8) depth = 8; + x_margin = (w % width) / 2; + y_margin = (h % height) / 2; + + p->var.xres = w - 2*x_margin; + p->var.yres = h - 2*y_margin; + + fb->cursor.mode |= CURSOR_SHAPE; + + if (fb->margins) + fb->margins(fb, p, x_margin, y_margin); + if (fb->x_margin != x_margin || fb->y_margin != y_margin) { + fb->x_margin = x_margin; fb->y_margin = y_margin; + sun3fb_clear_margin(p, 0); + } + + return 1; +} + +void sun3fb_palette(int enter) +{ + int i; + struct display *p; + + for (i = 0; i < MAX_NR_CONSOLES; i++) { + p = &fb_display[i]; + if (p->dispsw && p->dispsw->setup == sun3fb_disp_setup && + p->fb_info->display_fg && + p->fb_info->display_fg->vc_num == i) { + struct fb_info_sbusfb *fb = sbusfbinfod(p); + + if (fb->restore_palette) { + if (enter) + fb->restore_palette(fb); + else if (vc_cons[i].d->vc_mode != KD_GRAPHICS) + vc_cons[i].d->vc_sw->con_set_palette(vc_cons[i].d, color_table); + } + } + } +} + + /* + * Initialisation + */ +static int __init sun3fb_init_fb(int fbtype, unsigned long addr) +{ + static struct sbus_dev sdb; + struct fb_fix_screeninfo *fix; + struct fb_var_screeninfo *var; + struct display *disp; + struct fb_info_sbusfb *fb; + struct fbtype *type; + int linebytes, w, h, depth; + char *p = NULL; + + fb = kmalloc(sizeof(struct fb_info_sbusfb), GFP_ATOMIC); + if (!fb) + return -ENOMEM; + + memset(fb, 0, sizeof(struct fb_info_sbusfb)); + fix = &fb->fix; + var = &fb->var; + disp = &fb->disp; + type = &fb->type; + + sdb.reg_addrs[0].phys_addr = addr; + fb->sbdp = &sdb; + + type->fb_type = fbtype; + + type->fb_height = h = 900; + type->fb_width = w = 1152; +sizechange: + type->fb_depth = depth = (fbtype == FBTYPE_SUN2BW) ? 1 : 8; + linebytes = w * depth / 8; + type->fb_size = PAGE_ALIGN((linebytes) * h); +/* + fb->x_margin = (w & 7) / 2; + fb->y_margin = (h & 15) / 2; +*/ + fb->x_margin = fb->y_margin = 0; + + var->xres_virtual = w; + var->yres_virtual = h; + var->xres = w - 2*fb->x_margin; + var->yres = h - 2*fb->y_margin; + + var->bits_per_pixel = depth; + var->height = var->width = -1; + var->pixclock = 10000; + var->vmode = FB_VMODE_NONINTERLACED; + var->red.length = var->green.length = var->blue.length = 8; + + fix->line_length = linebytes; + fix->smem_len = type->fb_size; + fix->type = FB_TYPE_PACKED_PIXELS; + fix->visual = FB_VISUAL_PSEUDOCOLOR; + + fb->info.fbops = &sun3fb_ops; + fb->info.disp = disp; + fb->info.currcon = -1; + strcpy(fb->info.fontname, fontname); + fb->info.changevar = NULL; + fb->info.switch_con = &sun3fbcon_switch; + fb->info.updatevar = &sun3fbcon_updatevar; + fb->info.flags = FBINFO_FLAG_DEFAULT; + + fb->cursor.hwsize.fbx = 32; + fb->cursor.hwsize.fby = 32; + + if (depth > 1 && !fb->color_map) { + if((fb->color_map = kmalloc(256 * 3, GFP_ATOMIC))==NULL) + return -ENOMEM; + } + + switch(fbtype) { +#ifdef CONFIG_FB_CGSIX + case FBTYPE_SUNFAST_COLOR: + p = cgsixfb_init(fb); break; +#endif +#ifdef CONFIG_FB_BWTWO + case FBTYPE_SUN2BW: + p = bwtwofb_init(fb); break; +#endif +#ifdef CONFIG_FB_CGTHREE + case FBTYPE_SUN4COLOR: + case FBTYPE_SUN3COLOR: + type->fb_size = 0x100000; + p = cgthreefb_init(fb); break; +#endif + } + fix->smem_start = (unsigned long)fb->info.screen_base; // FIXME + + if (!p) { + kfree(fb); + return -ENODEV; + } + + if (p == SBUSFBINIT_SIZECHANGE) + goto sizechange; + + disp->dispsw = &fb->dispsw; + if (fb->setcursor) { + fb->dispsw.cursor = sun3fb_cursor; + if (curblink) { + fb->cursor.blink_rate = DEFAULT_CURSOR_BLINK_RATE; + init_timer(&fb->cursor.timer); + fb->cursor.timer.expires = jiffies + fb->cursor.blink_rate; + fb->cursor.timer.data = (unsigned long)fb; + fb->cursor.timer.function = sun3fb_cursor_timer_handler; + add_timer(&fb->cursor.timer); + } + } + fb->cursor.mode = CURSOR_SHAPE; + fb->dispsw.set_font = sun3fb_set_font; + fb->setup = fb->dispsw.setup; + fb->dispsw.setup = sun3fb_disp_setup; + fb->dispsw.clear_margins = NULL; + + disp->var = *var; + disp->visual = fix->visual; + disp->type = fix->type; + disp->type_aux = fix->type_aux; + disp->line_length = fix->line_length; + + if (fb->blank) + disp->can_soft_blank = 1; + + sun3fb_set_var(var, -1, &fb->info); + + if (register_framebuffer(&fb->info) < 0) { + kfree(fb); + return -EINVAL; + } + printk("fb%d: %s\n", fb->info.node, p); + + return 0; +} + + +int __init sun3fb_init(void) +{ + extern int con_is_present(void); + unsigned long addr; + char p4id; + + if (!con_is_present()) return -ENODEV; +#ifdef CONFIG_SUN3 + switch(*(romvec->pv_fbtype)) + { + case FBTYPE_SUN2BW: + addr = 0xfe20000; + return sun3fb_init_fb(FBTYPE_SUN2BW, addr); + case FBTYPE_SUN3COLOR: + case FBTYPE_SUN4COLOR: + if(idprom->id_machtype != (SM_SUN3|SM_3_60)) { + printk("sun3fb: cgthree/four only supported on 3/60\n"); + return -ENODEV; + } + + addr = CGFOUR_OBMEM_ADDR; + return sun3fb_init_fb(*(romvec->pv_fbtype), addr); + default: + printk("sun3fb: unsupported framebuffer\n"); + return -ENODEV; + } +#else + addr = SUN3X_VIDEO_BASE; + p4id = *(char *)SUN3X_VIDEO_P4ID; + + p4id = (p4id == 0x45) ? p4id : (p4id & 0xf0); + switch (p4id) { + case 0x00: + return sun3fb_init_fb(FBTYPE_SUN2BW, addr); +#if 0 /* not yet */ + case 0x40: + return sun3fb_init_fb(FBTYPE_SUN4COLOR, addr); + break; + case 0x45: + return sun3fb_init_fb(FBTYPE_SUN8COLOR, addr); + break; +#endif + case 0x60: + return sun3fb_init_fb(FBTYPE_SUNFAST_COLOR, addr); + } +#endif + + return -ENODEV; +} + +MODULE_LICENSE("GPL"); |