/* * linux/drivers/video/vt8623fb.c - fbdev driver for * integrated graphic core in VIA VT8623 [CLE266] chipset * * 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. * * Code is based on s3fb, some parts are from David Boucher's viafb * (http://davesdomain.org.uk/viafb/) */ #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/delay.h> #include <linux/fb.h> #include <linux/svga.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */ #include <video/vga.h> struct vt8623fb_info { char __iomem *mmio_base; int wc_cookie; struct vgastate state; struct mutex open_lock; unsigned int ref_count; u32 pseudo_palette[16]; }; /* ------------------------------------------------------------------------- */ static const struct svga_fb_format vt8623fb_formats[] = { { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP8, FB_VISUAL_PSEUDOCOLOR, 16, 16}, { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 16, 16}, { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1, FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 16, 16}, { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 8}, /* {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0, FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, */ {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0, FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 2}, SVGA_FORMAT_END }; static const struct svga_pll vt8623_pll = {2, 127, 2, 7, 0, 3, 60000, 300000, 14318}; /* CRT timing register sets */ static struct vga_regset vt8623_h_total_regs[] = {{0x00, 0, 7}, {0x36, 3, 3}, VGA_REGSET_END}; static struct vga_regset vt8623_h_display_regs[] = {{0x01, 0, 7}, VGA_REGSET_END}; static struct vga_regset vt8623_h_blank_start_regs[] = {{0x02, 0, 7}, VGA_REGSET_END}; static struct vga_regset vt8623_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, {0x33, 5, 5}, VGA_REGSET_END}; static struct vga_regset vt8623_h_sync_start_regs[] = {{0x04, 0, 7}, {0x33, 4, 4}, VGA_REGSET_END}; static struct vga_regset vt8623_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END}; static struct vga_regset vt8623_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x35, 0, 0}, VGA_REGSET_END}; static struct vga_regset vt8623_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x35, 2, 2}, VGA_REGSET_END}; static struct vga_regset vt8623_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x35, 3, 3}, VGA_REGSET_END}; static struct vga_regset vt8623_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END}; static struct vga_regset vt8623_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x35, 1, 1}, VGA_REGSET_END}; static struct vga_regset vt8623_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END}; static struct vga_regset vt8623_offset_regs[] = {{0x13, 0, 7}, {0x35, 5, 7}, VGA_REGSET_END}; static struct vga_regset vt8623_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x33, 0, 2}, {0x35, 4, 4}, VGA_REGSET_END}; static struct vga_regset vt8623_fetch_count_regs[] = {{0x1C, 0, 7}, {0x1D, 0, 1}, VGA_REGSET_END}; static struct vga_regset vt8623_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x34, 0, 7}, {0x48, 0, 1}, VGA_REGSET_END}; static struct svga_timing_regs vt8623_timing_regs = { vt8623_h_total_regs, vt8623_h_display_regs, vt8623_h_blank_start_regs, vt8623_h_blank_end_regs, vt8623_h_sync_start_regs, vt8623_h_sync_end_regs, vt8623_v_total_regs, vt8623_v_display_regs, vt8623_v_blank_start_regs, vt8623_v_blank_end_regs, vt8623_v_sync_start_regs, vt8623_v_sync_end_regs, }; /* ------------------------------------------------------------------------- */ /* Module parameters */ static char *mode_option = "640x480-8@60"; static int mtrr = 1; MODULE_AUTHOR("(c) 2006 Ondrej Zajicek <santiago@crfreenet.org>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("fbdev driver for integrated graphics core in VIA VT8623 [CLE266]"); module_param(mode_option, charp, 0644); MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)"); module_param_named(mode, mode_option, charp, 0); MODULE_PARM_DESC(mode, "Default video mode e.g. '648x480-8@60' (deprecated)"); module_param(mtrr, int, 0444); MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)"); /* ------------------------------------------------------------------------- */ static void vt8623fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor) { struct vt8623fb_info *par = info->par; svga_tilecursor(par->state.vgabase, info, cursor); } static struct fb_tile_ops vt8623fb_tile_ops = { .fb_settile = svga_settile, .fb_tilecopy = svga_tilecopy, .fb_tilefill = svga_tilefill, .fb_tileblit = svga_tileblit, .fb_tilecursor = vt8623fb_tilecursor, .fb_get_tilemax = svga_get_tilemax, }; /* ------------------------------------------------------------------------- */ /* 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; } /* vt8623fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */ static void vt8623fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image) { u32 fg = expand_color(image->fg_color); u32 bg = expand_color(image->bg_color); const u8 *src1, *src; u8 __iomem *dst1; u32 __iomem *dst; u32 val; int x, y; src1 = image->data; dst1 = info->screen_base + (image->dy * info->fix.line_length) + ((image->dx / 8) * 4); for (y = 0; y < image->height; y++) { src = src1; dst = (u32 __iomem *) dst1; for (x = 0; x < image->width; x += 8) { val = *(src++) * 0x01010101; val = (val & fg) | (~val & bg); fb_writel(val, dst++); } src1 += image->width / 8; dst1 += info->fix.line_length; } } /* vt8623fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */ static void vt8623fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { u32 fg = expand_color(rect->color); u8 __iomem *dst1; u32 __iomem *dst; int x, y; dst1 = info->screen_base + (rect->dy * info->fix.line_length) + ((rect->dx / 8) * 4); for (y = 0; y < rect->height; y++) { dst = (u32 __iomem *) dst1; for (x = 0; x < rect->width; x += 8) { fb_writel(fg, dst++); } dst1 += info->fix.line_length; } } /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */ static inline u32 expand_pixel(u32 c) { return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) | ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF; } /* vt8623fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */ static void vt8623fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image) { u32 fg = image->fg_color * 0x11111111; u32 bg = image->bg_color * 0x11111111; const u8 *src1, *src; u8 __iomem *dst1; u32 __iomem *dst; u32 val; int x, y; src1 = image->data; dst1 = info->screen_base + (image->dy * info->fix.line_length) + ((image->dx / 8) * 4); for (y = 0; y < image->height; y++) { src = src1; dst = (u32 __iomem *) dst1; for (x = 0; x < image->width; x += 8) { val = expand_pixel(*(src++)); val = (val & fg) | (~val & bg); fb_writel(val, dst++); } src1 += image->width / 8; dst1 += info->fix.line_length; } } static void vt8623fb_imageblit(struct fb_info *info, const struct fb_image *image) { if ((info->var.bits_per_pixel == 4) && (image->depth == 1) && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) { if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES) vt8623fb_iplan_imageblit(info, image); else vt8623fb_cfb4_imageblit(info, image); } else cfb_imageblit(info, image); } static void vt8623fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { if ((info->var.bits_per_pixel == 4) && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0) && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)) vt8623fb_iplan_fillrect(info, rect); else cfb_fillrect(info, rect); } /* ------------------------------------------------------------------------- */ static void vt8623_set_pixclock(struct fb_info *info, u32 pixclock) { struct vt8623fb_info *par = info->par; u16 m, n, r; u8 regval; int rv; rv = svga_compute_pll(&vt8623_pll, 1000000000 / pixclock, &m, &n, &r, info->node); if (rv < 0) { fb_err(info, "cannot set requested pixclock, keeping old value\n"); return; } /* Set VGA misc register */ regval = vga_r(par->state.vgabase, VGA_MIS_R); vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD); /* Set clock registers */ vga_wseq(par->state.vgabase, 0x46, (n | (r << 6))); vga_wseq(par->state.vgabase, 0x47, m); udelay(1000); /* PLL reset */ svga_wseq_mask(par->state.vgabase, 0x40, 0x02, 0x02); svga_wseq_mask(par->state.vgabase, 0x40, 0x00, 0x02); } static int vt8623fb_open(struct fb_info *info, int user) { struct vt8623fb_info *par = info->par; mutex_lock(&(par->open_lock)); if (par->ref_count == 0) { void __iomem *vgabase = par->state.vgabase; memset(&(par->state), 0, sizeof(struct vgastate)); par->state.vgabase = vgabase; par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP; par->state.num_crtc = 0xA2; par->state.num_seq = 0x50; save_vga(&(par->state)); } par->ref_count++; mutex_unlock(&(par->open_lock)); return 0; } static int vt8623fb_release(struct fb_info *info, int user) { struct vt8623fb_info *par = info->par; mutex_lock(&(par->open_lock)); if (par->ref_count == 0) { mutex_unlock(&(par->open_lock)); return -EINVAL; } if (par->ref_count == 1) restore_vga(&(par->state)); par->ref_count--; mutex_unlock(&(par->open_lock)); return 0; } static int vt8623fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { int rv, mem, step; /* Find appropriate format */ rv = svga_match_format (vt8623fb_formats, var, NULL); if (rv < 0) { fb_err(info, "unsupported mode requested\n"); return rv; } /* Do not allow to have real resoulution larger than virtual */ if (var->xres > var->xres_virtual) var->xres_virtual = var->xres; if (var->yres > var->yres_virtual) var->yres_virtual = var->yres; /* Round up xres_virtual to have proper alignment of lines */ step = vt8623fb_formats[rv].xresstep - 1; var->xres_virtual = (var->xres_virtual+step) & ~step; /* Check whether have enough memory */ mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual; if (mem > info->screen_size) { fb_err(info, "not enough framebuffer memory (%d kB requested, %d kB available)\n", mem >> 10, (unsigned int) (info->screen_size >> 10)); return -EINVAL; } /* Text mode is limited to 256 kB of memory */ if ((var->bits_per_pixel == 0) && (mem > (256*1024))) { fb_err(info, "text framebuffer size too large (%d kB requested, 256 kB possible)\n", mem >> 10); return -EINVAL; } rv = svga_check_timings (&vt8623_timing_regs, var, info->node); if (rv < 0) { fb_err(info, "invalid timings requested\n"); return rv; } /* Interlaced mode not supported */ if (var->vmode & FB_VMODE_INTERLACED) return -EINVAL; return 0; } static int vt8623fb_set_par(struct fb_info *info) { u32 mode, offset_value, fetch_value, screen_size; struct vt8623fb_info *par = info->par; u32 bpp = info->var.bits_per_pixel; if (bpp != 0) { info->fix.ypanstep = 1; info->fix.line_length = (info->var.xres_virtual * bpp) / 8; info->flags &= ~FBINFO_MISC_TILEBLITTING; info->tileops = NULL; /* in 4bpp supports 8p wide tiles only, any tiles otherwise */ info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0); info->pixmap.blit_y = ~(u32)0; offset_value = (info->var.xres_virtual * bpp) / 64; fetch_value = ((info->var.xres * bpp) / 128) + 4; if (bpp == 4) fetch_value = (info->var.xres / 8) + 8; /* + 0 is OK */ screen_size = info->var.yres_virtual * info->fix.line_length; } else { info->fix.ypanstep = 16; info->fix.line_length = 0; info->flags |= FBINFO_MISC_TILEBLITTING; info->tileops = &vt8623fb_tile_ops; /* supports 8x16 tiles only */ info->pixmap.blit_x = 1 << (8 - 1); info->pixmap.blit_y = 1 << (16 - 1); offset_value = info->var.xres_virtual / 16; fetch_value = (info->var.xres / 8) + 8; screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64; } info->var.xoffset = 0; info->var.yoffset = 0; info->var.activate = FB_ACTIVATE_NOW; /* Unlock registers */ svga_wseq_mask(par->state.vgabase, 0x10, 0x01, 0x01); svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x80); svga_wcrt_mask(par->state.vgabase, 0x47, 0x00, 0x01); /* Device, screen and sync off */ svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); svga_wcrt_mask(par->state.vgabase, 0x36, 0x30, 0x30); svga_wcrt_mask(par->state.vgabase, 0x17, 0x00, 0x80); /* Set default values */ svga_set_default_gfx_regs(par->state.vgabase); svga_set_default_atc_regs(par->state.vgabase); svga_set_default_seq_regs(par->state.vgabase); svga_set_default_crt_regs(par->state.vgabase); svga_wcrt_multi(par->state.vgabase, vt8623_line_compare_regs, 0xFFFFFFFF); svga_wcrt_multi(par->state.vgabase, vt8623_start_address_regs, 0); svga_wcrt_multi(par->state.vgabase, vt8623_offset_regs, offset_value); svga_wseq_multi(par->state.vgabase, vt8623_fetch_count_regs, fetch_value); /* Clear H/V Skew */ svga_wcrt_mask(par->state.vgabase, 0x03, 0x00, 0x60); svga_wcrt_mask(par->state.vgabase, 0x05, 0x00, 0x60); if (info->var.vmode & FB_VMODE_DOUBLE) svga_wcrt_mask(par->state.vgabase, 0x09, 0x80, 0x80); else svga_wcrt_mask(par->state.vgabase, 0x09, 0x00, 0x80); svga_wseq_mask(par->state.vgabase, 0x1E, 0xF0, 0xF0); // DI/DVP bus svga_wseq_mask(par->state.vgabase, 0x2A, 0x0F, 0x0F); // DI/DVP bus svga_wseq_mask(par->state.vgabase, 0x16, 0x08, 0xBF); // FIFO read threshold vga_wseq(par->state.vgabase, 0x17, 0x1F); // FIFO depth vga_wseq(par->state.vgabase, 0x18, 0x4E); svga_wseq_mask(par->state.vgabase, 0x1A, 0x08, 0x08); // enable MMIO ? vga_wcrt(par->state.vgabase, 0x32, 0x00); vga_wcrt(par->state.vgabase, 0x34, 0x00); vga_wcrt(par->state.vgabase, 0x6A, 0x80); vga_wcrt(par->state.vgabase, 0x6A, 0xC0); vga_wgfx(par->state.vgabase, 0x20, 0x00); vga_wgfx(par->state.vgabase, 0x21, 0x00); vga_wgfx(par->state.vgabase, 0x22, 0x00); /* Set SR15 according to number of bits per pixel */ mode = svga_match_format(vt8623fb_formats, &(info->var), &(info->fix)); switch (mode) { case 0: fb_dbg(info, "text mode\n"); svga_set_textmode_vga_regs(par->state.vgabase); svga_wseq_mask(par->state.vgabase, 0x15, 0x00, 0xFE); svga_wcrt_mask(par->state.vgabase, 0x11, 0x60, 0x70); break; case 1: fb_dbg(info, "4 bit pseudocolor\n"); vga_wgfx(par->state.vgabase, VGA_GFX_MODE, 0x40); svga_wseq_mask(par->state.vgabase, 0x15, 0x20, 0xFE); svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x70); break; case 2: fb_dbg(info, "4 bit pseudocolor, planar\n"); svga_wseq_mask(par->state.vgabase, 0x15, 0x00, 0xFE); svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x70); break; case 3: fb_dbg(info, "8 bit pseudocolor\n"); svga_wseq_mask(par->state.vgabase, 0x15, 0x22, 0xFE); break; case 4: fb_dbg(info, "5/6/5 truecolor\n"); svga_wseq_mask(par->state.vgabase, 0x15, 0xB6, 0xFE); break; case 5: fb_dbg(info, "8/8/8 truecolor\n"); svga_wseq_mask(par->state.vgabase, 0x15, 0xAE, 0xFE); break; default: printk(KERN_ERR "vt8623fb: unsupported mode - bug\n"); return (-EINVAL); } vt8623_set_pixclock(info, info->var.pixclock); svga_set_timings(par->state.vgabase, &vt8623_timing_regs, &(info->var), 1, 1, (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1, 1, 1, info->node); memset_io(info->screen_base, 0x00, screen_size); /* Device and screen back on */ svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80); svga_wcrt_mask(par->state.vgabase, 0x36, 0x00, 0x30); svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20); return 0; } static int vt8623fb_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; 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 0; 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; break; case 24: case 32: if (regno >= 16) return 0; /* ((transp & 0xFF00) << 16) */ ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) | (green & 0xFF00) | ((blue & 0xFF00) >> 8); break; default: return -EINVAL; } return 0; } static int vt8623fb_blank(int blank_mode, struct fb_info *info) { struct vt8623fb_info *par = info->par; switch (blank_mode) { case FB_BLANK_UNBLANK: fb_dbg(info, "unblank\n"); svga_wcrt_mask(par->state.vgabase, 0x36, 0x00, 0x30); svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20); break; case FB_BLANK_NORMAL: fb_dbg(info, "blank\n"); svga_wcrt_mask(par->state.vgabase, 0x36, 0x00, 0x30); svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); break; case FB_BLANK_HSYNC_SUSPEND: fb_dbg(info, "DPMS standby (hsync off)\n"); svga_wcrt_mask(par->state.vgabase, 0x36, 0x10, 0x30); svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); break; case FB_BLANK_VSYNC_SUSPEND: fb_dbg(info, "DPMS suspend (vsync off)\n"); svga_wcrt_mask(par->state.vgabase, 0x36, 0x20, 0x30); svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); break; case FB_BLANK_POWERDOWN: fb_dbg(info, "DPMS off (no sync)\n"); svga_wcrt_mask(par->state.vgabase, 0x36, 0x30, 0x30); svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); break; } return 0; } static int vt8623fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { struct vt8623fb_info *par = info->par; unsigned int offset; /* Calculate the offset */ if (info->var.bits_per_pixel == 0) { offset = (var->yoffset / 16) * info->var.xres_virtual + var->xoffset; offset = offset >> 3; } else { offset = (var->yoffset * info->fix.line_length) + (var->xoffset * info->var.bits_per_pixel / 8); offset = offset >> ((info->var.bits_per_pixel == 4) ? 2 : 1); } /* Set the offset */ svga_wcrt_multi(par->state.vgabase, vt8623_start_address_regs, offset); return 0; } /* ------------------------------------------------------------------------- */ /* Frame buffer operations */ static struct fb_ops vt8623fb_ops = { .owner = THIS_MODULE, .fb_open = vt8623fb_open, .fb_release = vt8623fb_release, .fb_check_var = vt8623fb_check_var, .fb_set_par = vt8623fb_set_par, .fb_setcolreg = vt8623fb_setcolreg, .fb_blank = vt8623fb_blank, .fb_pan_display = vt8623fb_pan_display, .fb_fillrect = vt8623fb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = vt8623fb_imageblit, .fb_get_caps = svga_get_caps, }; /* PCI probe */ static int vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { struct pci_bus_region bus_reg; struct resource vga_res; struct fb_info *info; struct vt8623fb_info *par; unsigned int memsize1, memsize2; int rc; /* Ignore secondary VGA device because there is no VGA arbitration */ if (! svga_primary_device(dev)) { dev_info(&(dev->dev), "ignoring secondary device\n"); return -ENODEV; } /* Allocate and fill driver data structure */ info = framebuffer_alloc(sizeof(struct vt8623fb_info), &(dev->dev)); if (! info) { dev_err(&(dev->dev), "cannot allocate memory\n"); return -ENOMEM; } par = info->par; mutex_init(&par->open_lock); info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN; info->fbops = &vt8623fb_ops; /* Prepare PCI device */ rc = pci_enable_device(dev); if (rc < 0) { dev_err(info->device, "cannot enable PCI device\n"); goto err_enable_device; } rc = pci_request_regions(dev, "vt8623fb"); if (rc < 0) { dev_err(info->device, "cannot reserve framebuffer region\n"); goto err_request_regions; } info->fix.smem_start = pci_resource_start(dev, 0); info->fix.smem_len = pci_resource_len(dev, 0); info->fix.mmio_start = pci_resource_start(dev, 1); info->fix.mmio_len = pci_resource_len(dev, 1); /* Map physical IO memory address into kernel space */ info->screen_base = pci_iomap_wc(dev, 0, 0); if (! info->screen_base) { rc = -ENOMEM; dev_err(info->device, "iomap for framebuffer failed\n"); goto err_iomap_1; } par->mmio_base = pci_iomap(dev, 1, 0); if (! par->mmio_base) { rc = -ENOMEM; dev_err(info->device, "iomap for MMIO failed\n"); goto err_iomap_2; } bus_reg.start = 0; bus_reg.end = 64 * 1024; vga_res.flags = IORESOURCE_IO; pcibios_bus_to_resource(dev->bus, &vga_res, &bus_reg); par->state.vgabase = (void __iomem *) (unsigned long) vga_res.start; /* Find how many physical memory there is on card */ memsize1 = (vga_rseq(par->state.vgabase, 0x34) + 1) >> 1; memsize2 = vga_rseq(par->state.vgabase, 0x39) << 2; if ((16 <= memsize1) && (memsize1 <= 64) && (memsize1 == memsize2)) info->screen_size = memsize1 << 20; else { dev_err(info->device, "memory size detection failed (%x %x), suppose 16 MB\n", memsize1, memsize2); info->screen_size = 16 << 20; } info->fix.smem_len = info->screen_size; strcpy(info->fix.id, "VIA VT8623"); info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.visual = FB_VISUAL_PSEUDOCOLOR; info->fix.ypanstep = 0; info->fix.accel = FB_ACCEL_NONE; info->pseudo_palette = (void*)par->pseudo_palette; /* Prepare startup mode */ kernel_param_lock(THIS_MODULE); rc = fb_find_mode(&(info->var), info, mode_option, NULL, 0, NULL, 8); kernel_param_unlock(THIS_MODULE); if (! ((rc == 1) || (rc == 2))) { rc = -EINVAL; dev_err(info->device, "mode %s not found\n", mode_option); goto err_find_mode; } rc = fb_alloc_cmap(&info->cmap, 256, 0); if (rc < 0) { dev_err(info->device, "cannot allocate colormap\n"); goto err_alloc_cmap; } rc = register_framebuffer(info); if (rc < 0) { dev_err(info->device, "cannot register framebuffer\n"); goto err_reg_fb; } fb_info(info, "%s on %s, %d MB RAM\n", info->fix.id, pci_name(dev), info->fix.smem_len >> 20); /* Record a reference to the driver data */ pci_set_drvdata(dev, info); if (mtrr) par->wc_cookie = arch_phys_wc_add(info->fix.smem_start, info->fix.smem_len); return 0; /* Error handling */ err_reg_fb: fb_dealloc_cmap(&info->cmap); err_alloc_cmap: err_find_mode: pci_iounmap(dev, par->mmio_base); err_iomap_2: pci_iounmap(dev, info->screen_base); err_iomap_1: pci_release_regions(dev); err_request_regions: /* pci_disable_device(dev); */ err_enable_device: framebuffer_release(info); return rc; } /* PCI remove */ static void vt8623_pci_remove(struct pci_dev *dev) { struct fb_info *info = pci_get_drvdata(dev); if (info) { struct vt8623fb_info *par = info->par; arch_phys_wc_del(par->wc_cookie); unregister_framebuffer(info); fb_dealloc_cmap(&info->cmap); pci_iounmap(dev, info->screen_base); pci_iounmap(dev, par->mmio_base); pci_release_regions(dev); /* pci_disable_device(dev); */ framebuffer_release(info); } } #ifdef CONFIG_PM /* PCI suspend */ static int vt8623_pci_suspend(struct pci_dev* dev, pm_message_t state) { struct fb_info *info = pci_get_drvdata(dev); struct vt8623fb_info *par = info->par; dev_info(info->device, "suspend\n"); console_lock(); mutex_lock(&(par->open_lock)); if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) { mutex_unlock(&(par->open_lock)); console_unlock(); return 0; } fb_set_suspend(info, 1); pci_save_state(dev); pci_disable_device(dev); pci_set_power_state(dev, pci_choose_state(dev, state)); mutex_unlock(&(par->open_lock)); console_unlock(); return 0; } /* PCI resume */ static int vt8623_pci_resume(struct pci_dev* dev) { struct fb_info *info = pci_get_drvdata(dev); struct vt8623fb_info *par = info->par; dev_info(info->device, "resume\n"); console_lock(); mutex_lock(&(par->open_lock)); if (par->ref_count == 0) goto fail; pci_set_power_state(dev, PCI_D0); pci_restore_state(dev); if (pci_enable_device(dev)) goto fail; pci_set_master(dev); vt8623fb_set_par(info); fb_set_suspend(info, 0); fail: mutex_unlock(&(par->open_lock)); console_unlock(); return 0; } #else #define vt8623_pci_suspend NULL #define vt8623_pci_resume NULL #endif /* CONFIG_PM */ /* List of boards that we are trying to support */ static struct pci_device_id vt8623_devices[] = { {PCI_DEVICE(PCI_VENDOR_ID_VIA, 0x3122)}, {0, 0, 0, 0, 0, 0, 0} }; MODULE_DEVICE_TABLE(pci, vt8623_devices); static struct pci_driver vt8623fb_pci_driver = { .name = "vt8623fb", .id_table = vt8623_devices, .probe = vt8623_pci_probe, .remove = vt8623_pci_remove, .suspend = vt8623_pci_suspend, .resume = vt8623_pci_resume, }; /* Cleanup */ static void __exit vt8623fb_cleanup(void) { pr_debug("vt8623fb: cleaning up\n"); pci_unregister_driver(&vt8623fb_pci_driver); } /* Driver Initialisation */ static int __init vt8623fb_init(void) { #ifndef MODULE char *option = NULL; if (fb_get_options("vt8623fb", &option)) return -ENODEV; if (option && *option) mode_option = option; #endif pr_debug("vt8623fb: initializing\n"); return pci_register_driver(&vt8623fb_pci_driver); } /* ------------------------------------------------------------------------- */ /* Modularization */ module_init(vt8623fb_init); module_exit(vt8623fb_cleanup);