From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: Re: [PATCH] fbdev driver for S3 Trio/Virge, updated Date: Thu, 22 Feb 2007 08:05:33 +0800 Message-ID: <1172102733.4217.38.camel@daplas> References: <20070209193405.GB2637@localhost.localdomain> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1HK1Q5-0004q8-JI for linux-fbdev-devel@lists.sourceforge.net; Wed, 21 Feb 2007 16:02:45 -0800 Received: from nz-out-0506.google.com ([64.233.162.225]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1HK1Q3-0007vc-0A for linux-fbdev-devel@lists.sourceforge.net; Wed, 21 Feb 2007 16:02:45 -0800 Received: by nz-out-0506.google.com with SMTP id i11so5918nzi for ; Wed, 21 Feb 2007 16:02:42 -0800 (PST) In-Reply-To: <20070209193405.GB2637@localhost.localdomain> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Ondrej Zajicek Cc: Andrew Morton , linux-fbdev-devel@lists.sourceforge.net, James Simmons , linux-kernel@vger.kernel.org, Jiri Slaby On Fri, 2007-02-09 at 20:34 +0100, Ondrej Zajicek wrote: > This patch adds driver for S3 Trio / S3 Virge. Driver is tested > with most versions of S3 Trio and S3 Virge, on i386. > It is tested both as compiled-in and module. It is against > linux-2.6.20 . > > This is version 3. There are some minor modifications from version 2 > (mostly coding style cleanups). Nice, the first driver to use tileblit :-) Since this driver is already in the -mm tree, can you resubmit a diff against that? > + > +static const struct vga_regset s3_h_total_regs[] = {{0x00, 0, 7}, {0x5D, 0, 0}, VGA_REGSET_END}; > +static const struct vga_regset s3_h_display_regs[] = {{0x01, 0, 7}, {0x5D, 1, 1}, VGA_REGSET_END}; > +static const struct vga_regset s3_h_blank_start_regs[] = {{0x02, 0, 7}, {0x5D, 2, 2}, VGA_REGSET_END}; > +static const struct vga_regset s3_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, VGA_REGSET_END}; > +static const struct vga_regset s3_h_sync_start_regs[] = {{0x04, 0, 7}, {0x5D, 4, 4}, VGA_REGSET_END}; > +static const struct vga_regset s3_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END}; > + > +static const struct vga_regset s3_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x5E, 0, 0}, VGA_REGSET_END}; > +static const struct vga_regset s3_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x5E, 1, 1}, VGA_REGSET_END}; > +static const struct vga_regset s3_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x5E, 2, 2}, VGA_REGSET_END}; > +static const struct vga_regset s3_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END}; > +static const struct vga_regset s3_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x5E, 4, 4}, VGA_REGSET_END}; > +static const struct vga_regset s3_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END}; > + > +static const struct vga_regset s3_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x5E, 6, 6}, VGA_REGSET_END}; > +static const struct vga_regset s3_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x31, 4, 5}, {0x51, 0, 1}, VGA_REGSET_END}; > +static const struct vga_regset s3_offset_regs[] = {{0x13, 0, 7}, {0x51, 4, 5}, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */ > + Within reason, try to limit each line to 80 columns. > + > +/* image data is MSB-first, fb structure is MSB-first too */ > +static inline u32 expand_color(u32 c) > +{ > + return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF; > +} > + > +/* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */ Hmn, same thing with vga16fb... Perhaps we should bring back the fontwidth flag of 2.2 and 2.4 kernels. > + > +static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, > + u_int transp, struct fb_info *fb) > +{ > + switch (fb->var.bits_per_pixel) { > + case 0: > + case 4: > + if (regno >= 16) > + return -EINVAL; > + > + if ((fb->var.bits_per_pixel == 4) && > + (fb->var.nonstd == 0)) { > + outb(0xF0, VGA_PEL_MSK); > + outb(regno*16, VGA_PEL_IW); > + } else { > + outb(0x0F, VGA_PEL_MSK); > + outb(regno, VGA_PEL_IW); > + } > + outb(red >> 10, VGA_PEL_D); > + outb(green >> 10, VGA_PEL_D); > + outb(blue >> 10, VGA_PEL_D); > + break; > + case 8: > + if (regno >= 256) > + return -EINVAL; > + > + outb(0xFF, VGA_PEL_MSK); > + outb(regno, VGA_PEL_IW); > + outb(red >> 10, VGA_PEL_D); > + outb(green >> 10, VGA_PEL_D); > + outb(blue >> 10, VGA_PEL_D); > + break; > + case 16: > + if (regno >= 16) > + return -EINVAL; Just return success without doing anything. I presume this is truecolor. > + > + if (fb->var.green.length == 5) > + ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) | > + ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11); > + else if (fb->var.green.length == 6) > + ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) | > + ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11); > + else return -EINVAL; Same here. > + break; > + case 24: > + case 32: > + if (regno >= 16) > + return -EINVAL; And here. > + > + ((u32*)fb->pseudo_palette)[regno] = ((transp & 0xFF00) << 16) | ((red & 0xFF00) << 8) | > + (green & 0xFF00) | ((blue & 0xFF00) >> 8); > + break; > + default: > + return -EINVAL; > + } > + > + return 0; > +} [snip] > + > +/* Pan the display */ > + > +static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { > + > + unsigned int offset; > + > + /* Validate the offsets */ > + if ((var->xoffset + var->xres) > var->xres_virtual) > + return -EINVAL; > + if ((var->yoffset + var->yres) > var->yres_virtual) > + return -EINVAL; You need not validate the offsets, fb_pan_display() does this for you. > + > + /* Calculate the offset */ > + if (var->bits_per_pixel == 0) { > + offset = (var->yoffset / 16) * (var->xres_virtual / 2) + (var->xoffset / 2); > + offset = offset >> 2; > + } else { > + offset = (var->yoffset * info->fix.line_length) + > + (var->xoffset * var->bits_per_pixel / 8); > + offset = offset >> 2; > + } > + > + /* Set the offset */ > + svga_wcrt_multi(s3_start_address_regs, offset); > + > + return 0; > +} > + > +/* ------------------------------------------------------------------------- */ > + > +/* Frame buffer operations */ > + > +static struct fb_ops s3fb_ops = { > + .owner = THIS_MODULE, > + .fb_open = s3fb_open, > + .fb_release = s3fb_release, > + .fb_check_var = s3fb_check_var, > + .fb_set_par = s3fb_set_par, > + .fb_setcolreg = s3fb_setcolreg, > + .fb_blank = s3fb_blank, > + .fb_pan_display = s3fb_pan_display, > + .fb_fillrect = s3fb_fillrect, > + .fb_copyarea = cfb_copyarea, No s3fb_copyarea :-). Usually it's the other way around, imageblit is unaccelerated. > + .fb_imageblit = s3fb_imageblit, > +}; > + Tony ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV