| /* |
| * 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/version.h> |
| #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/slab.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 acquire_console_sem() */ |
| #include <video/vga.h> |
| |
| #ifdef CONFIG_MTRR |
| #include <asm/mtrr.h> |
| #endif |
| |
| struct vt8623fb_info { |
| char __iomem *mmio_base; |
| int mtrr_reg; |
| 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 */ |
| |
| struct vga_regset vt8623_h_total_regs[] = {{0x00, 0, 7}, {0x36, 3, 3}, VGA_REGSET_END}; |
| struct vga_regset vt8623_h_display_regs[] = {{0x01, 0, 7}, VGA_REGSET_END}; |
| struct vga_regset vt8623_h_blank_start_regs[] = {{0x02, 0, 7}, VGA_REGSET_END}; |
| struct vga_regset vt8623_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, {0x33, 5, 5}, VGA_REGSET_END}; |
| struct vga_regset vt8623_h_sync_start_regs[] = {{0x04, 0, 7}, {0x33, 4, 4}, VGA_REGSET_END}; |
| struct vga_regset vt8623_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END}; |
| |
| struct vga_regset vt8623_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x35, 0, 0}, VGA_REGSET_END}; |
| struct vga_regset vt8623_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x35, 2, 2}, VGA_REGSET_END}; |
| struct vga_regset vt8623_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x35, 3, 3}, VGA_REGSET_END}; |
| struct vga_regset vt8623_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END}; |
| struct vga_regset vt8623_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x35, 1, 1}, VGA_REGSET_END}; |
| struct vga_regset vt8623_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END}; |
| |
| struct vga_regset vt8623_offset_regs[] = {{0x13, 0, 7}, {0x35, 5, 7}, VGA_REGSET_END}; |
| 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}; |
| struct vga_regset vt8623_fetch_count_regs[] = {{0x1C, 0, 7}, {0x1D, 0, 1}, VGA_REGSET_END}; |
| struct vga_regset vt8623_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x34, 0, 7}, {0x48, 0, 1}, VGA_REGSET_END}; |
| |
| 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 = "640x480-8@60"; |
| |
| #ifdef CONFIG_MTRR |
| static int mtrr = 1; |
| #endif |
| |
| 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, charp, 0644); |
| MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc)"); |
| |
| #ifdef CONFIG_MTRR |
| module_param(mtrr, int, 0444); |
| MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)"); |
| #endif |
| |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| |
| 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 = svga_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) |
| { |
| u16 m, n, r; |
| u8 regval; |
| int rv; |
| |
| rv = svga_compute_pll(&vt8623_pll, 1000000000 / pixclock, &m, &n, &r, info->node); |
| if (rv < 0) { |
| printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node); |
| return; |
| } |
| |
| /* Set VGA misc register */ |
| regval = vga_r(NULL, VGA_MIS_R); |
| vga_w(NULL, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD); |
| |
| /* Set clock registers */ |
| vga_wseq(NULL, 0x46, (n | (r << 6))); |
| vga_wseq(NULL, 0x47, m); |
| |
| udelay(1000); |
| |
| /* PLL reset */ |
| svga_wseq_mask(0x40, 0x02, 0x02); |
| svga_wseq_mask(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) { |
| memset(&(par->state), 0, sizeof(struct vgastate)); |
| 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) |
| { |
| printk(KERN_ERR "fb%d: unsupported mode requested\n", info->node); |
| 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) |
| { |
| printk(KERN_ERR "fb%d: not enough framebuffer memory (%d kB requested , %d kB available)\n", info->node, 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))) |
| { |
| printk(KERN_ERR "fb%d: text framebuffer size too large (%d kB requested, 256 kB possible)\n", info->node, mem >> 10); |
| return -EINVAL; |
| } |
| |
| rv = svga_check_timings (&vt8623_timing_regs, var, info->node); |
| if (rv < 0) |
| { |
| printk(KERN_ERR "fb%d: invalid timings requested\n", info->node); |
| 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; |
| 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(0x10, 0x01, 0x01); |
| svga_wcrt_mask(0x11, 0x00, 0x80); |
| svga_wcrt_mask(0x47, 0x00, 0x01); |
| |
| /* Device, screen and sync off */ |
| svga_wseq_mask(0x01, 0x20, 0x20); |
| svga_wcrt_mask(0x36, 0x30, 0x30); |
| svga_wcrt_mask(0x17, 0x00, 0x80); |
| |
| /* Set default values */ |
| svga_set_default_gfx_regs(); |
| svga_set_default_atc_regs(); |
| svga_set_default_seq_regs(); |
| svga_set_default_crt_regs(); |
| svga_wcrt_multi(vt8623_line_compare_regs, 0xFFFFFFFF); |
| svga_wcrt_multi(vt8623_start_address_regs, 0); |
| |
| svga_wcrt_multi(vt8623_offset_regs, offset_value); |
| svga_wseq_multi(vt8623_fetch_count_regs, fetch_value); |
| |
| if (info->var.vmode & FB_VMODE_DOUBLE) |
| svga_wcrt_mask(0x09, 0x80, 0x80); |
| else |
| svga_wcrt_mask(0x09, 0x00, 0x80); |
| |
| svga_wseq_mask(0x1E, 0xF0, 0xF0); // DI/DVP bus |
| svga_wseq_mask(0x2A, 0x0F, 0x0F); // DI/DVP bus |
| svga_wseq_mask(0x16, 0x08, 0xBF); // FIFO read treshold |
| vga_wseq(NULL, 0x17, 0x1F); // FIFO depth |
| vga_wseq(NULL, 0x18, 0x4E); |
| svga_wseq_mask(0x1A, 0x08, 0x08); // enable MMIO ? |
| |
| vga_wcrt(NULL, 0x32, 0x00); |
| vga_wcrt(NULL, 0x34, 0x00); |
| vga_wcrt(NULL, 0x6A, 0x80); |
| vga_wcrt(NULL, 0x6A, 0xC0); |
| |
| vga_wgfx(NULL, 0x20, 0x00); |
| vga_wgfx(NULL, 0x21, 0x00); |
| vga_wgfx(NULL, 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: |
| pr_debug("fb%d: text mode\n", info->node); |
| svga_set_textmode_vga_regs(); |
| svga_wseq_mask(0x15, 0x00, 0xFE); |
| svga_wcrt_mask(0x11, 0x60, 0x70); |
| break; |
| case 1: |
| pr_debug("fb%d: 4 bit pseudocolor\n", info->node); |
| vga_wgfx(NULL, VGA_GFX_MODE, 0x40); |
| svga_wseq_mask(0x15, 0x20, 0xFE); |
| svga_wcrt_mask(0x11, 0x00, 0x70); |
| break; |
| case 2: |
| pr_debug("fb%d: 4 bit pseudocolor, planar\n", info->node); |
| svga_wseq_mask(0x15, 0x00, 0xFE); |
| svga_wcrt_mask(0x11, 0x00, 0x70); |
| break; |
| case 3: |
| pr_debug("fb%d: 8 bit pseudocolor\n", info->node); |
| svga_wseq_mask(0x15, 0x22, 0xFE); |
| break; |
| case 4: |
| pr_debug("fb%d: 5/6/5 truecolor\n", info->node); |
| svga_wseq_mask(0x15, 0xB6, 0xFE); |
| break; |
| case 5: |
| pr_debug("fb%d: 8/8/8 truecolor\n", info->node); |
| svga_wseq_mask(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(&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(0x17, 0x80, 0x80); |
| svga_wcrt_mask(0x36, 0x00, 0x30); |
| svga_wseq_mask(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) |
| { |
| switch (blank_mode) { |
| case FB_BLANK_UNBLANK: |
| pr_debug("fb%d: unblank\n", info->node); |
| svga_wcrt_mask(0x36, 0x00, 0x30); |
| svga_wseq_mask(0x01, 0x00, 0x20); |
| break; |
| case FB_BLANK_NORMAL: |
| pr_debug("fb%d: blank\n", info->node); |
| svga_wcrt_mask(0x36, 0x00, 0x30); |
| svga_wseq_mask(0x01, 0x20, 0x20); |
| break; |
| case FB_BLANK_HSYNC_SUSPEND: |
| pr_debug("fb%d: DPMS standby (hsync off)\n", info->node); |
| svga_wcrt_mask(0x36, 0x10, 0x30); |
| svga_wseq_mask(0x01, 0x20, 0x20); |
| break; |
| case FB_BLANK_VSYNC_SUSPEND: |
| pr_debug("fb%d: DPMS suspend (vsync off)\n", info->node); |
| svga_wcrt_mask(0x36, 0x20, 0x30); |
| svga_wseq_mask(0x01, 0x20, 0x20); |
| break; |
| case FB_BLANK_POWERDOWN: |
| pr_debug("fb%d: DPMS off (no sync)\n", info->node); |
| svga_wcrt_mask(0x36, 0x30, 0x30); |
| svga_wseq_mask(0x01, 0x20, 0x20); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| |
| static int vt8623fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| unsigned int offset; |
| |
| /* Calculate the offset */ |
| if (var->bits_per_pixel == 0) { |
| offset = (var->yoffset / 16) * var->xres_virtual + var->xoffset; |
| offset = offset >> 3; |
| } else { |
| offset = (var->yoffset * info->fix.line_length) + |
| (var->xoffset * var->bits_per_pixel / 8); |
| offset = offset >> ((var->bits_per_pixel == 4) ? 2 : 1); |
| } |
| |
| /* Set the offset */ |
| svga_wcrt_multi(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, |
| }; |
| |
| |
| /* PCI probe */ |
| |
| static int __devinit vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) |
| { |
| 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), NULL); |
| 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(&(dev->dev), "cannot enable PCI device\n"); |
| goto err_enable_device; |
| } |
| |
| rc = pci_request_regions(dev, "vt8623fb"); |
| if (rc < 0) { |
| dev_err(&(dev->dev), "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(dev, 0, 0); |
| if (! info->screen_base) { |
| rc = -ENOMEM; |
| dev_err(&(dev->dev), "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(&(dev->dev), "iomap for MMIO failed\n"); |
| goto err_iomap_2; |
| } |
| |
| /* Find how many physical memory there is on card */ |
| memsize1 = (vga_rseq(NULL, 0x34) + 1) >> 1; |
| memsize2 = vga_rseq(NULL, 0x39) << 2; |
| |
| if ((16 <= memsize1) && (memsize1 <= 64) && (memsize1 == memsize2)) |
| info->screen_size = memsize1 << 20; |
| else { |
| dev_err(&(dev->dev), "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 */ |
| |
| rc = fb_find_mode(&(info->var), info, mode, NULL, 0, NULL, 8); |
| if (! ((rc == 1) || (rc == 2))) { |
| rc = -EINVAL; |
| dev_err(&(dev->dev), "mode %s not found\n", mode); |
| goto err_find_mode; |
| } |
| |
| rc = fb_alloc_cmap(&info->cmap, 256, 0); |
| if (rc < 0) { |
| dev_err(&(dev->dev), "cannot allocate colormap\n"); |
| goto err_alloc_cmap; |
| } |
| |
| rc = register_framebuffer(info); |
| if (rc < 0) { |
| dev_err(&(dev->dev), "cannot register framebugger\n"); |
| goto err_reg_fb; |
| } |
| |
| printk(KERN_INFO "fb%d: %s on %s, %d MB RAM\n", info->node, info->fix.id, |
| pci_name(dev), info->fix.smem_len >> 20); |
| |
| /* Record a reference to the driver data */ |
| pci_set_drvdata(dev, info); |
| |
| #ifdef CONFIG_MTRR |
| if (mtrr) { |
| par->mtrr_reg = -1; |
| par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1); |
| } |
| #endif |
| |
| 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 __devexit vt8623_pci_remove(struct pci_dev *dev) |
| { |
| struct fb_info *info = pci_get_drvdata(dev); |
| struct vt8623fb_info *par = info->par; |
| |
| if (info) { |
| #ifdef CONFIG_MTRR |
| if (par->mtrr_reg >= 0) { |
| mtrr_del(par->mtrr_reg, 0, 0); |
| par->mtrr_reg = -1; |
| } |
| #endif |
| |
| 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); */ |
| |
| pci_set_drvdata(dev, NULL); |
| 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(&(dev->dev), "suspend\n"); |
| |
| acquire_console_sem(); |
| mutex_lock(&(par->open_lock)); |
| |
| if ((state.event == PM_EVENT_FREEZE) || (par->ref_count == 0)) { |
| mutex_unlock(&(par->open_lock)); |
| release_console_sem(); |
| 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)); |
| release_console_sem(); |
| |
| 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(&(dev->dev), "resume\n"); |
| |
| acquire_console_sem(); |
| mutex_lock(&(par->open_lock)); |
| |
| if (par->ref_count == 0) { |
| mutex_unlock(&(par->open_lock)); |
| release_console_sem(); |
| return 0; |
| } |
| |
| 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); |
| |
| mutex_unlock(&(par->open_lock)); |
| fail: |
| release_console_sem(); |
| |
| 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[] __devinitdata = { |
| {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 = __devexit_p(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 */ |
| |
| int __init vt8623fb_init(void) |
| { |
| |
| #ifndef MODULE |
| char *option = NULL; |
| |
| if (fb_get_options("vt8623fb", &option)) |
| return -ENODEV; |
| |
| if (option && *option) |
| mode = option; |
| #endif |
| |
| pr_debug("vt8623fb: initializing\n"); |
| return pci_register_driver(&vt8623fb_pci_driver); |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| |
| /* Modularization */ |
| |
| module_init(vt8623fb_init); |
| module_exit(vt8623fb_cleanup); |