diff options
Diffstat (limited to 'drivers/video/fbdev/core/svgalib.c')
| -rw-r--r-- | drivers/video/fbdev/core/svgalib.c | 672 |
1 files changed, 672 insertions, 0 deletions
diff --git a/drivers/video/fbdev/core/svgalib.c b/drivers/video/fbdev/core/svgalib.c new file mode 100644 index 000000000..9e01322fa --- /dev/null +++ b/drivers/video/fbdev/core/svgalib.c @@ -0,0 +1,672 @@ +/* + * Common utility functions for VGA-based graphics cards. + * + * Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org> + * + * 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. + * + * Some parts are based on David Boucher's viafb (http://davesdomain.org.uk/viafb/) + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/fb.h> +#include <linux/svga.h> +#include <asm/types.h> +#include <asm/io.h> + + +/* Write a CRT register value spread across multiple registers */ +void svga_wcrt_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value) +{ + u8 regval, bitval, bitnum; + + while (regset->regnum != VGA_REGSET_END_VAL) { + regval = vga_rcrt(regbase, regset->regnum); + bitnum = regset->lowbit; + while (bitnum <= regset->highbit) { + bitval = 1 << bitnum; + regval = regval & ~bitval; + if (value & 1) regval = regval | bitval; + bitnum ++; + value = value >> 1; + } + vga_wcrt(regbase, regset->regnum, regval); + regset ++; + } +} + +/* Write a sequencer register value spread across multiple registers */ +void svga_wseq_multi(void __iomem *regbase, const struct vga_regset *regset, u32 value) +{ + u8 regval, bitval, bitnum; + + while (regset->regnum != VGA_REGSET_END_VAL) { + regval = vga_rseq(regbase, regset->regnum); + bitnum = regset->lowbit; + while (bitnum <= regset->highbit) { + bitval = 1 << bitnum; + regval = regval & ~bitval; + if (value & 1) regval = regval | bitval; + bitnum ++; + value = value >> 1; + } + vga_wseq(regbase, regset->regnum, regval); + regset ++; + } +} + +static unsigned int svga_regset_size(const struct vga_regset *regset) +{ + u8 count = 0; + + while (regset->regnum != VGA_REGSET_END_VAL) { + count += regset->highbit - regset->lowbit + 1; + regset ++; + } + return 1 << count; +} + + +/* ------------------------------------------------------------------------- */ + + +/* Set graphics controller registers to sane values */ +void svga_set_default_gfx_regs(void __iomem *regbase) +{ + /* All standard GFX registers (GR00 - GR08) */ + vga_wgfx(regbase, VGA_GFX_SR_VALUE, 0x00); + vga_wgfx(regbase, VGA_GFX_SR_ENABLE, 0x00); + vga_wgfx(regbase, VGA_GFX_COMPARE_VALUE, 0x00); + vga_wgfx(regbase, VGA_GFX_DATA_ROTATE, 0x00); + vga_wgfx(regbase, VGA_GFX_PLANE_READ, 0x00); + vga_wgfx(regbase, VGA_GFX_MODE, 0x00); +/* vga_wgfx(regbase, VGA_GFX_MODE, 0x20); */ +/* vga_wgfx(regbase, VGA_GFX_MODE, 0x40); */ + vga_wgfx(regbase, VGA_GFX_MISC, 0x05); +/* vga_wgfx(regbase, VGA_GFX_MISC, 0x01); */ + vga_wgfx(regbase, VGA_GFX_COMPARE_MASK, 0x0F); + vga_wgfx(regbase, VGA_GFX_BIT_MASK, 0xFF); +} + +/* Set attribute controller registers to sane values */ +void svga_set_default_atc_regs(void __iomem *regbase) +{ + u8 count; + + vga_r(regbase, 0x3DA); + vga_w(regbase, VGA_ATT_W, 0x00); + + /* All standard ATC registers (AR00 - AR14) */ + for (count = 0; count <= 0xF; count ++) + svga_wattr(regbase, count, count); + + svga_wattr(regbase, VGA_ATC_MODE, 0x01); +/* svga_wattr(regbase, VGA_ATC_MODE, 0x41); */ + svga_wattr(regbase, VGA_ATC_OVERSCAN, 0x00); + svga_wattr(regbase, VGA_ATC_PLANE_ENABLE, 0x0F); + svga_wattr(regbase, VGA_ATC_PEL, 0x00); + svga_wattr(regbase, VGA_ATC_COLOR_PAGE, 0x00); + + vga_r(regbase, 0x3DA); + vga_w(regbase, VGA_ATT_W, 0x20); +} + +/* Set sequencer registers to sane values */ +void svga_set_default_seq_regs(void __iomem *regbase) +{ + /* Standard sequencer registers (SR01 - SR04), SR00 is not set */ + vga_wseq(regbase, VGA_SEQ_CLOCK_MODE, VGA_SR01_CHAR_CLK_8DOTS); + vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, VGA_SR02_ALL_PLANES); + vga_wseq(regbase, VGA_SEQ_CHARACTER_MAP, 0x00); +/* vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, VGA_SR04_EXT_MEM | VGA_SR04_SEQ_MODE | VGA_SR04_CHN_4M); */ + vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, VGA_SR04_EXT_MEM | VGA_SR04_SEQ_MODE); +} + +/* Set CRTC registers to sane values */ +void svga_set_default_crt_regs(void __iomem *regbase) +{ + /* Standard CRT registers CR03 CR08 CR09 CR14 CR17 */ + svga_wcrt_mask(regbase, 0x03, 0x80, 0x80); /* Enable vertical retrace EVRA */ + vga_wcrt(regbase, VGA_CRTC_PRESET_ROW, 0); + svga_wcrt_mask(regbase, VGA_CRTC_MAX_SCAN, 0, 0x1F); + vga_wcrt(regbase, VGA_CRTC_UNDERLINE, 0); + vga_wcrt(regbase, VGA_CRTC_MODE, 0xE3); +} + +void svga_set_textmode_vga_regs(void __iomem *regbase) +{ + /* svga_wseq_mask(regbase, 0x1, 0x00, 0x01); */ /* Switch 8/9 pixel per char */ + vga_wseq(regbase, VGA_SEQ_MEMORY_MODE, VGA_SR04_EXT_MEM); + vga_wseq(regbase, VGA_SEQ_PLANE_WRITE, 0x03); + + vga_wcrt(regbase, VGA_CRTC_MAX_SCAN, 0x0f); /* 0x4f */ + vga_wcrt(regbase, VGA_CRTC_UNDERLINE, 0x1f); + svga_wcrt_mask(regbase, VGA_CRTC_MODE, 0x23, 0x7f); + + vga_wcrt(regbase, VGA_CRTC_CURSOR_START, 0x0d); + vga_wcrt(regbase, VGA_CRTC_CURSOR_END, 0x0e); + vga_wcrt(regbase, VGA_CRTC_CURSOR_HI, 0x00); + vga_wcrt(regbase, VGA_CRTC_CURSOR_LO, 0x00); + + vga_wgfx(regbase, VGA_GFX_MODE, 0x10); /* Odd/even memory mode */ + vga_wgfx(regbase, VGA_GFX_MISC, 0x0E); /* Misc graphics register - text mode enable */ + vga_wgfx(regbase, VGA_GFX_COMPARE_MASK, 0x00); + + vga_r(regbase, 0x3DA); + vga_w(regbase, VGA_ATT_W, 0x00); + + svga_wattr(regbase, 0x10, 0x0C); /* Attribute Mode Control Register - text mode, blinking and line graphics */ + svga_wattr(regbase, 0x13, 0x08); /* Horizontal Pixel Panning Register */ + + vga_r(regbase, 0x3DA); + vga_w(regbase, VGA_ATT_W, 0x20); +} + +#if 0 +void svga_dump_var(struct fb_var_screeninfo *var, int node) +{ + pr_debug("fb%d: var.vmode : 0x%X\n", node, var->vmode); + pr_debug("fb%d: var.xres : %d\n", node, var->xres); + pr_debug("fb%d: var.yres : %d\n", node, var->yres); + pr_debug("fb%d: var.bits_per_pixel: %d\n", node, var->bits_per_pixel); + pr_debug("fb%d: var.xres_virtual : %d\n", node, var->xres_virtual); + pr_debug("fb%d: var.yres_virtual : %d\n", node, var->yres_virtual); + pr_debug("fb%d: var.left_margin : %d\n", node, var->left_margin); + pr_debug("fb%d: var.right_margin : %d\n", node, var->right_margin); + pr_debug("fb%d: var.upper_margin : %d\n", node, var->upper_margin); + pr_debug("fb%d: var.lower_margin : %d\n", node, var->lower_margin); + pr_debug("fb%d: var.hsync_len : %d\n", node, var->hsync_len); + pr_debug("fb%d: var.vsync_len : %d\n", node, var->vsync_len); + pr_debug("fb%d: var.sync : 0x%X\n", node, var->sync); + pr_debug("fb%d: var.pixclock : %d\n\n", node, var->pixclock); +} +#endif /* 0 */ + + +/* ------------------------------------------------------------------------- */ + + +void svga_settile(struct fb_info *info, struct fb_tilemap *map) +{ + const u8 *font = map->data; + u8 __iomem *fb = (u8 __iomem *)info->screen_base; + int i, c; + + if ((map->width != 8) || (map->height != 16) || + (map->depth != 1) || (map->length != 256)) { + fb_err(info, "unsupported font parameters: width %d, height %d, depth %d, length %d\n", + map->width, map->height, map->depth, map->length); + return; + } + + fb += 2; + for (c = 0; c < map->length; c++) { + for (i = 0; i < map->height; i++) { + fb_writeb(font[i], fb + i * 4); +// fb[i * 4] = font[i]; + } + fb += 128; + font += map->height; + } +} + +/* Copy area in text (tileblit) mode */ +void svga_tilecopy(struct fb_info *info, struct fb_tilearea *area) +{ + int dx, dy; + /* colstride is halved in this function because u16 are used */ + int colstride = 1 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK); + int rowstride = colstride * (info->var.xres_virtual / 8); + u16 __iomem *fb = (u16 __iomem *) info->screen_base; + u16 __iomem *src, *dst; + + if ((area->sy > area->dy) || + ((area->sy == area->dy) && (area->sx > area->dx))) { + src = fb + area->sx * colstride + area->sy * rowstride; + dst = fb + area->dx * colstride + area->dy * rowstride; + } else { + src = fb + (area->sx + area->width - 1) * colstride + + (area->sy + area->height - 1) * rowstride; + dst = fb + (area->dx + area->width - 1) * colstride + + (area->dy + area->height - 1) * rowstride; + + colstride = -colstride; + rowstride = -rowstride; + } + + for (dy = 0; dy < area->height; dy++) { + u16 __iomem *src2 = src; + u16 __iomem *dst2 = dst; + for (dx = 0; dx < area->width; dx++) { + fb_writew(fb_readw(src2), dst2); +// *dst2 = *src2; + src2 += colstride; + dst2 += colstride; + } + src += rowstride; + dst += rowstride; + } +} + +/* Fill area in text (tileblit) mode */ +void svga_tilefill(struct fb_info *info, struct fb_tilerect *rect) +{ + int dx, dy; + int colstride = 2 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK); + int rowstride = colstride * (info->var.xres_virtual / 8); + int attr = (0x0F & rect->bg) << 4 | (0x0F & rect->fg); + u8 __iomem *fb = (u8 __iomem *)info->screen_base; + fb += rect->sx * colstride + rect->sy * rowstride; + + for (dy = 0; dy < rect->height; dy++) { + u8 __iomem *fb2 = fb; + for (dx = 0; dx < rect->width; dx++) { + fb_writeb(rect->index, fb2); + fb_writeb(attr, fb2 + 1); + fb2 += colstride; + } + fb += rowstride; + } +} + +/* Write text in text (tileblit) mode */ +void svga_tileblit(struct fb_info *info, struct fb_tileblit *blit) +{ + int dx, dy, i; + int colstride = 2 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK); + int rowstride = colstride * (info->var.xres_virtual / 8); + int attr = (0x0F & blit->bg) << 4 | (0x0F & blit->fg); + u8 __iomem *fb = (u8 __iomem *)info->screen_base; + fb += blit->sx * colstride + blit->sy * rowstride; + + i=0; + for (dy=0; dy < blit->height; dy ++) { + u8 __iomem *fb2 = fb; + for (dx = 0; dx < blit->width; dx ++) { + fb_writeb(blit->indices[i], fb2); + fb_writeb(attr, fb2 + 1); + fb2 += colstride; + i ++; + if (i == blit->length) return; + } + fb += rowstride; + } + +} + +/* Set cursor in text (tileblit) mode */ +void svga_tilecursor(void __iomem *regbase, struct fb_info *info, struct fb_tilecursor *cursor) +{ + u8 cs = 0x0d; + u8 ce = 0x0e; + u16 pos = cursor->sx + (info->var.xoffset / 8) + + (cursor->sy + (info->var.yoffset / 16)) + * (info->var.xres_virtual / 8); + + if (! cursor -> mode) + return; + + svga_wcrt_mask(regbase, 0x0A, 0x20, 0x20); /* disable cursor */ + + if (cursor -> shape == FB_TILE_CURSOR_NONE) + return; + + switch (cursor -> shape) { + case FB_TILE_CURSOR_UNDERLINE: + cs = 0x0d; + break; + case FB_TILE_CURSOR_LOWER_THIRD: + cs = 0x09; + break; + case FB_TILE_CURSOR_LOWER_HALF: + cs = 0x07; + break; + case FB_TILE_CURSOR_TWO_THIRDS: + cs = 0x05; + break; + case FB_TILE_CURSOR_BLOCK: + cs = 0x01; + break; + } + + /* set cursor position */ + vga_wcrt(regbase, 0x0E, pos >> 8); + vga_wcrt(regbase, 0x0F, pos & 0xFF); + + vga_wcrt(regbase, 0x0B, ce); /* set cursor end */ + vga_wcrt(regbase, 0x0A, cs); /* set cursor start and enable it */ +} + +int svga_get_tilemax(struct fb_info *info) +{ + return 256; +} + +/* Get capabilities of accelerator based on the mode */ + +void svga_get_caps(struct fb_info *info, struct fb_blit_caps *caps, + struct fb_var_screeninfo *var) +{ + if (var->bits_per_pixel == 0) { + /* can only support 256 8x16 bitmap */ + caps->x = 1 << (8 - 1); + caps->y = 1 << (16 - 1); + caps->len = 256; + } else { + caps->x = (var->bits_per_pixel == 4) ? 1 << (8 - 1) : ~(u32)0; + caps->y = ~(u32)0; + caps->len = ~(u32)0; + } +} +EXPORT_SYMBOL(svga_get_caps); + +/* ------------------------------------------------------------------------- */ + + +/* + * Compute PLL settings (M, N, R) + * F_VCO = (F_BASE * M) / N + * F_OUT = F_VCO / (2^R) + */ + +static inline u32 abs_diff(u32 a, u32 b) +{ + return (a > b) ? (a - b) : (b - a); +} + +int svga_compute_pll(const struct svga_pll *pll, u32 f_wanted, u16 *m, u16 *n, u16 *r, int node) +{ + u16 am, an, ar; + u32 f_vco, f_current, delta_current, delta_best; + + pr_debug("fb%d: ideal frequency: %d kHz\n", node, (unsigned int) f_wanted); + + ar = pll->r_max; + f_vco = f_wanted << ar; + + /* overflow check */ + if ((f_vco >> ar) != f_wanted) + return -EINVAL; + + /* It is usually better to have greater VCO clock + because of better frequency stability. + So first try r_max, then r smaller. */ + while ((ar > pll->r_min) && (f_vco > pll->f_vco_max)) { + ar--; + f_vco = f_vco >> 1; + } + + /* VCO bounds check */ + if ((f_vco < pll->f_vco_min) || (f_vco > pll->f_vco_max)) + return -EINVAL; + + delta_best = 0xFFFFFFFF; + *m = 0; + *n = 0; + *r = ar; + + am = pll->m_min; + an = pll->n_min; + + while ((am <= pll->m_max) && (an <= pll->n_max)) { + f_current = (pll->f_base * am) / an; + delta_current = abs_diff (f_current, f_vco); + + if (delta_current < delta_best) { + delta_best = delta_current; + *m = am; + *n = an; + } + + if (f_current <= f_vco) { + am ++; + } else { + an ++; + } + } + + f_current = (pll->f_base * *m) / *n; + pr_debug("fb%d: found frequency: %d kHz (VCO %d kHz)\n", node, (int) (f_current >> ar), (int) f_current); + pr_debug("fb%d: m = %d n = %d r = %d\n", node, (unsigned int) *m, (unsigned int) *n, (unsigned int) *r); + return 0; +} + + +/* ------------------------------------------------------------------------- */ + + +/* Check CRT timing values */ +int svga_check_timings(const struct svga_timing_regs *tm, struct fb_var_screeninfo *var, int node) +{ + u32 value; + + var->xres = (var->xres+7)&~7; + var->left_margin = (var->left_margin+7)&~7; + var->right_margin = (var->right_margin+7)&~7; + var->hsync_len = (var->hsync_len+7)&~7; + + /* Check horizontal total */ + value = var->xres + var->left_margin + var->right_margin + var->hsync_len; + if (((value / 8) - 5) >= svga_regset_size (tm->h_total_regs)) + return -EINVAL; + + /* Check horizontal display and blank start */ + value = var->xres; + if (((value / 8) - 1) >= svga_regset_size (tm->h_display_regs)) + return -EINVAL; + if (((value / 8) - 1) >= svga_regset_size (tm->h_blank_start_regs)) + return -EINVAL; + + /* Check horizontal sync start */ + value = var->xres + var->right_margin; + if (((value / 8) - 1) >= svga_regset_size (tm->h_sync_start_regs)) + return -EINVAL; + + /* Check horizontal blank end (or length) */ + value = var->left_margin + var->right_margin + var->hsync_len; + if ((value == 0) || ((value / 8) >= svga_regset_size (tm->h_blank_end_regs))) + return -EINVAL; + + /* Check horizontal sync end (or length) */ + value = var->hsync_len; + if ((value == 0) || ((value / 8) >= svga_regset_size (tm->h_sync_end_regs))) + return -EINVAL; + + /* Check vertical total */ + value = var->yres + var->upper_margin + var->lower_margin + var->vsync_len; + if ((value - 1) >= svga_regset_size(tm->v_total_regs)) + return -EINVAL; + + /* Check vertical display and blank start */ + value = var->yres; + if ((value - 1) >= svga_regset_size(tm->v_display_regs)) + return -EINVAL; + if ((value - 1) >= svga_regset_size(tm->v_blank_start_regs)) + return -EINVAL; + + /* Check vertical sync start */ + value = var->yres + var->lower_margin; + if ((value - 1) >= svga_regset_size(tm->v_sync_start_regs)) + return -EINVAL; + + /* Check vertical blank end (or length) */ + value = var->upper_margin + var->lower_margin + var->vsync_len; + if ((value == 0) || (value >= svga_regset_size (tm->v_blank_end_regs))) + return -EINVAL; + + /* Check vertical sync end (or length) */ + value = var->vsync_len; + if ((value == 0) || (value >= svga_regset_size (tm->v_sync_end_regs))) + return -EINVAL; + + return 0; +} + +/* Set CRT timing registers */ +void svga_set_timings(void __iomem *regbase, const struct svga_timing_regs *tm, + struct fb_var_screeninfo *var, + u32 hmul, u32 hdiv, u32 vmul, u32 vdiv, u32 hborder, int node) +{ + u8 regval; + u32 value; + + value = var->xres + var->left_margin + var->right_margin + var->hsync_len; + value = (value * hmul) / hdiv; + pr_debug("fb%d: horizontal total : %d\n", node, value); + svga_wcrt_multi(regbase, tm->h_total_regs, (value / 8) - 5); + + value = var->xres; + value = (value * hmul) / hdiv; + pr_debug("fb%d: horizontal display : %d\n", node, value); + svga_wcrt_multi(regbase, tm->h_display_regs, (value / 8) - 1); + + value = var->xres; + value = (value * hmul) / hdiv; + pr_debug("fb%d: horizontal blank start: %d\n", node, value); + svga_wcrt_multi(regbase, tm->h_blank_start_regs, (value / 8) - 1 + hborder); + + value = var->xres + var->left_margin + var->right_margin + var->hsync_len; + value = (value * hmul) / hdiv; + pr_debug("fb%d: horizontal blank end : %d\n", node, value); + svga_wcrt_multi(regbase, tm->h_blank_end_regs, (value / 8) - 1 - hborder); + + value = var->xres + var->right_margin; + value = (value * hmul) / hdiv; + pr_debug("fb%d: horizontal sync start : %d\n", node, value); + svga_wcrt_multi(regbase, tm->h_sync_start_regs, (value / 8)); + + value = var->xres + var->right_margin + var->hsync_len; + value = (value * hmul) / hdiv; + pr_debug("fb%d: horizontal sync end : %d\n", node, value); + svga_wcrt_multi(regbase, tm->h_sync_end_regs, (value / 8)); + + value = var->yres + var->upper_margin + var->lower_margin + var->vsync_len; + value = (value * vmul) / vdiv; + pr_debug("fb%d: vertical total : %d\n", node, value); + svga_wcrt_multi(regbase, tm->v_total_regs, value - 2); + + value = var->yres; + value = (value * vmul) / vdiv; + pr_debug("fb%d: vertical display : %d\n", node, value); + svga_wcrt_multi(regbase, tm->v_display_regs, value - 1); + + value = var->yres; + value = (value * vmul) / vdiv; + pr_debug("fb%d: vertical blank start : %d\n", node, value); + svga_wcrt_multi(regbase, tm->v_blank_start_regs, value); + + value = var->yres + var->upper_margin + var->lower_margin + var->vsync_len; + value = (value * vmul) / vdiv; + pr_debug("fb%d: vertical blank end : %d\n", node, value); + svga_wcrt_multi(regbase, tm->v_blank_end_regs, value - 2); + + value = var->yres + var->lower_margin; + value = (value * vmul) / vdiv; + pr_debug("fb%d: vertical sync start : %d\n", node, value); + svga_wcrt_multi(regbase, tm->v_sync_start_regs, value); + + value = var->yres + var->lower_margin + var->vsync_len; + value = (value * vmul) / vdiv; + pr_debug("fb%d: vertical sync end : %d\n", node, value); + svga_wcrt_multi(regbase, tm->v_sync_end_regs, value); + + /* Set horizontal and vertical sync pulse polarity in misc register */ + + regval = vga_r(regbase, VGA_MIS_R); + if (var->sync & FB_SYNC_HOR_HIGH_ACT) { + pr_debug("fb%d: positive horizontal sync\n", node); + regval = regval & ~0x80; + } else { + pr_debug("fb%d: negative horizontal sync\n", node); + regval = regval | 0x80; + } + if (var->sync & FB_SYNC_VERT_HIGH_ACT) { + pr_debug("fb%d: positive vertical sync\n", node); + regval = regval & ~0x40; + } else { + pr_debug("fb%d: negative vertical sync\n\n", node); + regval = regval | 0x40; + } + vga_w(regbase, VGA_MIS_W, regval); +} + + +/* ------------------------------------------------------------------------- */ + + +static inline int match_format(const struct svga_fb_format *frm, + struct fb_var_screeninfo *var) +{ + int i = 0; + int stored = -EINVAL; + + while (frm->bits_per_pixel != SVGA_FORMAT_END_VAL) + { + if ((var->bits_per_pixel == frm->bits_per_pixel) && + (var->red.length <= frm->red.length) && + (var->green.length <= frm->green.length) && + (var->blue.length <= frm->blue.length) && + (var->transp.length <= frm->transp.length) && + (var->nonstd == frm->nonstd)) + return i; + if (var->bits_per_pixel == frm->bits_per_pixel) + stored = i; + i++; + frm++; + } + return stored; +} + +int svga_match_format(const struct svga_fb_format *frm, + struct fb_var_screeninfo *var, + struct fb_fix_screeninfo *fix) +{ + int i = match_format(frm, var); + + if (i >= 0) { + var->bits_per_pixel = frm[i].bits_per_pixel; + var->red = frm[i].red; + var->green = frm[i].green; + var->blue = frm[i].blue; + var->transp = frm[i].transp; + var->nonstd = frm[i].nonstd; + if (fix != NULL) { + fix->type = frm[i].type; + fix->type_aux = frm[i].type_aux; + fix->visual = frm[i].visual; + fix->xpanstep = frm[i].xpanstep; + } + } + + return i; +} + + +EXPORT_SYMBOL(svga_wcrt_multi); +EXPORT_SYMBOL(svga_wseq_multi); + +EXPORT_SYMBOL(svga_set_default_gfx_regs); +EXPORT_SYMBOL(svga_set_default_atc_regs); +EXPORT_SYMBOL(svga_set_default_seq_regs); +EXPORT_SYMBOL(svga_set_default_crt_regs); +EXPORT_SYMBOL(svga_set_textmode_vga_regs); + +EXPORT_SYMBOL(svga_settile); +EXPORT_SYMBOL(svga_tilecopy); +EXPORT_SYMBOL(svga_tilefill); +EXPORT_SYMBOL(svga_tileblit); +EXPORT_SYMBOL(svga_tilecursor); +EXPORT_SYMBOL(svga_get_tilemax); + +EXPORT_SYMBOL(svga_compute_pll); +EXPORT_SYMBOL(svga_check_timings); +EXPORT_SYMBOL(svga_set_timings); +EXPORT_SYMBOL(svga_match_format); + +MODULE_AUTHOR("Ondrej Zajicek <santiago@crfreenet.org>"); +MODULE_DESCRIPTION("Common utility functions for VGA-based graphics cards"); +MODULE_LICENSE("GPL"); |