diff options
author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 15:31:38 +0200 |
---|---|---|
committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 08:10:19 +0300 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/svgalib.c | |
parent | c26ef3eb3c11274bad1b64498d0a134f85755250 (diff) |
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/svgalib.c')
-rw-r--r-- | drivers/video/svgalib.c | 672 |
1 files changed, 0 insertions, 672 deletions
diff --git a/drivers/video/svgalib.c b/drivers/video/svgalib.c deleted file mode 100644 index 9e01322fabe3..000000000000 --- a/drivers/video/svgalib.c +++ /dev/null @@ -1,672 +0,0 @@ -/* - * 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"); |