From: Krzysztof Helt Date: Thu, 16 Oct 2008 05:03:39 +0000 (-0700) Subject: cirrusfb: eliminate CRT registers from global structure X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9a85cf51fb880e24179fc45d3ee7d5ff1eb58c3a;p=openwrt%2Fstaging%2Fblogic.git cirrusfb: eliminate CRT registers from global structure Move calculations of CRT register values into the cirrusfb_set_par_foo() where the values are used. Signed-off-by: Krzysztof Helt Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/video/cirrusfb.c b/drivers/video/cirrusfb.c index 4e34a6817435..573bd456e5ab 100644 --- a/drivers/video/cirrusfb.c +++ b/drivers/video/cirrusfb.c @@ -334,22 +334,6 @@ struct cirrusfb_regs { long multiplexing; long mclk; long divMCLK; - - long HorizRes; /* The x resolution in pixel */ - long HorizTotal; - long HorizDispEnd; - long HorizBlankStart; - long HorizBlankEnd; - long HorizSyncStart; - long HorizSyncEnd; - - long VertRes; /* the physical y resolution in scanlines */ - long VertTotal; - long VertDispEnd; - long VertSyncStart; - long VertSyncEnd; - long VertBlankStart; - long VertBlankEnd; }; #ifdef CIRRUSFB_DEBUG @@ -664,8 +648,6 @@ static int cirrusfb_decode_var(const struct fb_var_screeninfo *var, long maxclock; int maxclockidx = var->bits_per_pixel >> 3; struct cirrusfb_info *cinfo = info->par; - int xres, hfront, hsync, hback; - int yres, vfront, vsync, vback; switch (var->bits_per_pixel) { case 1: @@ -723,7 +705,7 @@ static int cirrusfb_decode_var(const struct fb_var_screeninfo *var, switch (var->bits_per_pixel) { case 16: case 32: - if (regs->HorizRes <= 800) + if (var->xres <= 800) /* Xbh has this type of clock for 32-bit */ freq /= 2; break; @@ -735,57 +717,6 @@ static int cirrusfb_decode_var(const struct fb_var_screeninfo *var, regs->mclk = cirrusfb_get_mclk(freq, var->bits_per_pixel, ®s->divMCLK); - xres = var->xres; - hfront = var->right_margin; - hsync = var->hsync_len; - hback = var->left_margin; - - yres = var->yres; - vfront = var->lower_margin; - vsync = var->vsync_len; - vback = var->upper_margin; - - if (var->vmode & FB_VMODE_DOUBLE) { - yres *= 2; - vfront *= 2; - vsync *= 2; - vback *= 2; - } else if (var->vmode & FB_VMODE_INTERLACED) { - yres = (yres + 1) / 2; - vfront = (vfront + 1) / 2; - vsync = (vsync + 1) / 2; - vback = (vback + 1) / 2; - } - regs->HorizRes = xres; - regs->HorizTotal = (xres + hfront + hsync + hback) / 8 - 5; - regs->HorizDispEnd = xres / 8 - 1; - regs->HorizBlankStart = xres / 8; - /* does not count with "-5" */ - regs->HorizBlankEnd = regs->HorizTotal + 5; - regs->HorizSyncStart = (xres + hfront) / 8 + 1; - regs->HorizSyncEnd = (xres + hfront + hsync) / 8 + 1; - - regs->VertRes = yres; - regs->VertTotal = yres + vfront + vsync + vback - 2; - regs->VertDispEnd = yres - 1; - regs->VertBlankStart = yres; - regs->VertBlankEnd = regs->VertTotal; - regs->VertSyncStart = yres + vfront - 1; - regs->VertSyncEnd = yres + vfront + vsync - 1; - - if (regs->VertRes >= 1024) { - regs->VertTotal /= 2; - regs->VertSyncStart /= 2; - regs->VertSyncEnd /= 2; - regs->VertDispEnd /= 2; - } - if (regs->multiplexing) { - regs->HorizTotal /= 2; - regs->HorizSyncStart /= 2; - regs->HorizSyncEnd /= 2; - regs->HorizDispEnd /= 2; - } - return 0; } @@ -823,6 +754,8 @@ static int cirrusfb_set_par_foo(struct fb_info *info) unsigned char tmp; int offset = 0, err; const struct cirrusfb_board_info_rec *bi; + int hdispend, hsyncstart, hsyncend, htotal; + int yres, vdispend, vsyncstart, vsyncend, vtotal; DPRINTK("ENTER\n"); DPRINTK("Requested mode: %dx%dx%d\n", @@ -840,76 +773,117 @@ static int cirrusfb_set_par_foo(struct fb_info *info) bi = &cirrusfb_board_info[cinfo->btype]; + hsyncstart = var->xres + var->right_margin; + hsyncend = hsyncstart + var->hsync_len; + htotal = (hsyncend + var->left_margin) / 8 - 5; + hdispend = var->xres / 8 - 1; + hsyncstart = hsyncstart / 8 + 1; + hsyncend = hsyncend / 8 + 1; + + yres = var->yres; + vsyncstart = yres + var->lower_margin; + vsyncend = vsyncstart + var->vsync_len; + vtotal = vsyncend + var->upper_margin; + vdispend = yres - 1; + + if (var->vmode & FB_VMODE_DOUBLE) { + yres *= 2; + vsyncstart *= 2; + vsyncend *= 2; + vtotal *= 2; + } else if (var->vmode & FB_VMODE_INTERLACED) { + yres = (yres + 1) / 2; + vsyncstart = (vsyncstart + 1) / 2; + vsyncend = (vsyncend + 1) / 2; + vtotal = (vtotal + 1) / 2; + } + + vtotal -= 2; + vsyncstart -= 1; + vsyncend -= 1; + + if (yres >= 1024) { + vtotal /= 2; + vsyncstart /= 2; + vsyncend /= 2; + vdispend /= 2; + } + if (regs.multiplexing) { + htotal /= 2; + hsyncstart /= 2; + hsyncend /= 2; + hdispend /= 2; + } /* unlock register VGA_CRTC_H_TOTAL..CRT7 */ vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, 0x20); /* previously: 0x00) */ /* if debugging is enabled, all parameters get output before writing */ - DPRINTK("CRT0: %ld\n", regs.HorizTotal); - vga_wcrt(regbase, VGA_CRTC_H_TOTAL, regs.HorizTotal); + DPRINTK("CRT0: %d\n", htotal); + vga_wcrt(regbase, VGA_CRTC_H_TOTAL, htotal); - DPRINTK("CRT1: %ld\n", regs.HorizDispEnd); - vga_wcrt(regbase, VGA_CRTC_H_DISP, regs.HorizDispEnd); + DPRINTK("CRT1: %d\n", hdispend); + vga_wcrt(regbase, VGA_CRTC_H_DISP, hdispend); - DPRINTK("CRT2: %ld\n", regs.HorizBlankStart); - vga_wcrt(regbase, VGA_CRTC_H_BLANK_START, regs.HorizBlankStart); + DPRINTK("CRT2: %d\n", var->xres / 8); + vga_wcrt(regbase, VGA_CRTC_H_BLANK_START, var->xres / 8); /* + 128: Compatible read */ - DPRINTK("CRT3: 128+%ld\n", regs.HorizBlankEnd % 32); + DPRINTK("CRT3: 128+%d\n", (htotal + 5) % 32); vga_wcrt(regbase, VGA_CRTC_H_BLANK_END, - 128 + (regs.HorizBlankEnd % 32)); + 128 + ((htotal + 5) % 32)); - DPRINTK("CRT4: %ld\n", regs.HorizSyncStart); - vga_wcrt(regbase, VGA_CRTC_H_SYNC_START, regs.HorizSyncStart); + DPRINTK("CRT4: %d\n", hsyncstart); + vga_wcrt(regbase, VGA_CRTC_H_SYNC_START, hsyncstart); - tmp = regs.HorizSyncEnd % 32; - if (regs.HorizBlankEnd & 32) + tmp = hsyncend % 32; + if ((htotal + 5) & 32) tmp += 128; DPRINTK("CRT5: %d\n", tmp); vga_wcrt(regbase, VGA_CRTC_H_SYNC_END, tmp); - DPRINTK("CRT6: %ld\n", regs.VertTotal & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_TOTAL, (regs.VertTotal & 0xff)); + DPRINTK("CRT6: %d\n", vtotal & 0xff); + vga_wcrt(regbase, VGA_CRTC_V_TOTAL, vtotal & 0xff); tmp = 16; /* LineCompare bit #9 */ - if (regs.VertTotal & 256) + if (vtotal & 256) tmp |= 1; - if (regs.VertDispEnd & 256) + if (vdispend & 256) tmp |= 2; - if (regs.VertSyncStart & 256) + if (vsyncstart & 256) tmp |= 4; - if (regs.VertBlankStart & 256) + if ((vdispend + 1) & 256) tmp |= 8; - if (regs.VertTotal & 512) + if (vtotal & 512) tmp |= 32; - if (regs.VertDispEnd & 512) + if (vdispend & 512) tmp |= 64; - if (regs.VertSyncStart & 512) + if (vsyncstart & 512) tmp |= 128; DPRINTK("CRT7: %d\n", tmp); vga_wcrt(regbase, VGA_CRTC_OVERFLOW, tmp); tmp = 0x40; /* LineCompare bit #8 */ - if (regs.VertBlankStart & 512) + if ((vdispend + 1) & 512) tmp |= 0x20; if (var->vmode & FB_VMODE_DOUBLE) tmp |= 0x80; DPRINTK("CRT9: %d\n", tmp); vga_wcrt(regbase, VGA_CRTC_MAX_SCAN, tmp); - DPRINTK("CRT10: %ld\n", regs.VertSyncStart & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_SYNC_START, regs.VertSyncStart & 0xff); + DPRINTK("CRT10: %d\n", vsyncstart & 0xff); + vga_wcrt(regbase, VGA_CRTC_V_SYNC_START, vsyncstart & 0xff); - DPRINTK("CRT11: 64+32+%ld\n", regs.VertSyncEnd % 16); - vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, regs.VertSyncEnd % 16 + 64 + 32); + DPRINTK("CRT11: 64+32+%d\n", vsyncend % 16); + vga_wcrt(regbase, VGA_CRTC_V_SYNC_END, vsyncend % 16 + 64 + 32); - DPRINTK("CRT12: %ld\n", regs.VertDispEnd & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_DISP_END, regs.VertDispEnd & 0xff); + DPRINTK("CRT12: %d\n", vdispend & 0xff); + vga_wcrt(regbase, VGA_CRTC_V_DISP_END, vdispend & 0xff); - DPRINTK("CRT15: %ld\n", regs.VertBlankStart & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_BLANK_START, regs.VertBlankStart & 0xff); + DPRINTK("CRT15: %d\n", (vdispend + 1) & 0xff); + vga_wcrt(regbase, VGA_CRTC_V_BLANK_START, (vdispend + 1) & 0xff); - DPRINTK("CRT16: %ld\n", regs.VertBlankEnd & 0xff); - vga_wcrt(regbase, VGA_CRTC_V_BLANK_END, regs.VertBlankEnd & 0xff); + DPRINTK("CRT16: %d\n", vtotal & 0xff); + vga_wcrt(regbase, VGA_CRTC_V_BLANK_END, vtotal & 0xff); DPRINTK("CRT18: 0xff\n"); vga_wcrt(regbase, VGA_CRTC_LINE_COMPARE, 0xff); @@ -917,13 +891,13 @@ static int cirrusfb_set_par_foo(struct fb_info *info) tmp = 0; if (var->vmode & FB_VMODE_INTERLACED) tmp |= 1; - if (regs.HorizBlankEnd & 64) + if ((htotal + 5) & 64) tmp |= 16; - if (regs.HorizBlankEnd & 128) + if ((htotal + 5) & 128) tmp |= 32; - if (regs.VertBlankEnd & 256) + if (vtotal & 256) tmp |= 64; - if (regs.VertBlankEnd & 512) + if (vtotal & 512) tmp |= 128; DPRINTK("CRT1a: %d\n", tmp); @@ -948,7 +922,7 @@ static int cirrusfb_set_par_foo(struct fb_info *info) DPRINTK("CL_SEQR1B: %ld\n", (long) tmp); vga_wseq(regbase, CL_SEQR1B, tmp); - if (regs.VertRes >= 1024) + if (yres >= 1024) /* 1280x1024 */ vga_wcrt(regbase, VGA_CRTC_MODE, 0xc7); else @@ -962,7 +936,7 @@ static int cirrusfb_set_par_foo(struct fb_info *info) /* don't know if it would hurt to also program this if no interlaced */ /* mode is used, but I feel better this way.. :-) */ if (var->vmode & FB_VMODE_INTERLACED) - vga_wcrt(regbase, VGA_CRTC_REGS, regs.HorizTotal / 2); + vga_wcrt(regbase, VGA_CRTC_REGS, htotal / 2); else vga_wcrt(regbase, VGA_CRTC_REGS, 0x00); /* interlace control */ @@ -1208,7 +1182,7 @@ static int cirrusfb_set_par_foo(struct fb_info *info) case BT_ALPINE: DPRINTK(" (for GD543x)\n"); - if (regs.HorizRes >= 1024) + if (var->xres >= 1024) vga_wseq(regbase, CL_SEQR7, 0xa7); else vga_wseq(regbase, CL_SEQR7, 0xa3);