/* * linux/drivers/video/sgivwfb.c -- SGI DBE frame buffer device * * Copyright (C) 1999 Silicon Graphics, Inc. * Jeffrey Newquist, newquist@engr.sgi.som * * 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. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/fb.h> #include <linux/init.h> #include <linux/ioport.h> #include <linux/platform_device.h> #include <asm/io.h> #include <asm/mtrr.h> #include <setup_arch.h> #define INCLUDE_TIMING_TABLE_DATA #define DBE_REG_BASE par->regs #include <video/sgivw.h> struct sgivw_par { struct asregs *regs; u32 cmap_fifo; u_long timing_num; }; #define FLATPANEL_SGI_1600SW 5 /* * RAM we reserve for the frame buffer. This defines the maximum screen * size * * The default can be overridden if the driver is compiled as a module */ static int ypan = 0; static int ywrap = 0; static int flatpanel_id = -1; static struct fb_fix_screeninfo sgivwfb_fix __initdata = { .id = "SGI Vis WS FB", .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_PSEUDOCOLOR, .mmio_start = DBE_REG_PHYS, .mmio_len = DBE_REG_SIZE, .accel = FB_ACCEL_NONE, .line_length = 640, }; static struct fb_var_screeninfo sgivwfb_var __initdata = { /* 640x480, 8 bpp */ .xres = 640, .yres = 480, .xres_virtual = 640, .yres_virtual = 480, .bits_per_pixel = 8, .red = { 0, 8, 0 }, .green = { 0, 8, 0 }, .blue = { 0, 8, 0 }, .height = -1, .width = -1, .pixclock = 20000, .left_margin = 64, .right_margin = 64, .upper_margin = 32, .lower_margin = 32, .hsync_len = 64, .vsync_len = 2, .vmode = FB_VMODE_NONINTERLACED }; static struct fb_var_screeninfo sgivwfb_var1600sw __initdata = { /* 1600x1024, 8 bpp */ .xres = 1600, .yres = 1024, .xres_virtual = 1600, .yres_virtual = 1024, .bits_per_pixel = 8, .red = { 0, 8, 0 }, .green = { 0, 8, 0 }, .blue = { 0, 8, 0 }, .height = -1, .width = -1, .pixclock = 9353, .left_margin = 20, .right_margin = 30, .upper_margin = 37, .lower_margin = 3, .hsync_len = 20, .vsync_len = 3, .vmode = FB_VMODE_NONINTERLACED }; /* * Interface used by the world */ int sgivwfb_init(void); static int sgivwfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info); static int sgivwfb_set_par(struct fb_info *info); static int sgivwfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info); static int sgivwfb_mmap(struct fb_info *info, struct vm_area_struct *vma); static struct fb_ops sgivwfb_ops = { .owner = THIS_MODULE, .fb_check_var = sgivwfb_check_var, .fb_set_par = sgivwfb_set_par, .fb_setcolreg = sgivwfb_setcolreg, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, .fb_mmap = sgivwfb_mmap, }; /* * Internal routines */ static unsigned long bytes_per_pixel(int bpp) { switch (bpp) { case 8: return 1; case 16: return 2; case 32: return 4; default: printk(KERN_INFO "sgivwfb: unsupported bpp %d\n", bpp); return 0; } } static unsigned long get_line_length(int xres_virtual, int bpp) { return (xres_virtual * bytes_per_pixel(bpp)); } /* * Function: dbe_TurnOffDma * Parameters: (None) * Description: This should turn off the monitor and dbe. This is used * when switching between the serial console and the graphics * console. */ static void dbe_TurnOffDma(struct sgivw_par *par) { unsigned int readVal; int i; // Check to see if things are already turned off: // 1) Check to see if dbe is not using the internal dotclock. // 2) Check to see if the xy counter in dbe is already off. DBE_GETREG(ctrlstat, readVal); if (GET_DBE_FIELD(CTRLSTAT, PCLKSEL, readVal) < 2) return; DBE_GETREG(vt_xy, readVal); if (GET_DBE_FIELD(VT_XY, VT_FREEZE, readVal) == 1) return; // Otherwise, turn off dbe DBE_GETREG(ovr_control, readVal); SET_DBE_FIELD(OVR_CONTROL, OVR_DMA_ENABLE, readVal, 0); DBE_SETREG(ovr_control, readVal); udelay(1000); DBE_GETREG(frm_control, readVal); SET_DBE_FIELD(FRM_CONTROL, FRM_DMA_ENABLE, readVal, 0); DBE_SETREG(frm_control, readVal); udelay(1000); DBE_GETREG(did_control, readVal); SET_DBE_FIELD(DID_CONTROL, DID_DMA_ENABLE, readVal, 0); DBE_SETREG(did_control, readVal); udelay(1000); // XXX HACK: // // This was necessary for GBE--we had to wait through two // vertical retrace periods before the pixel DMA was // turned off for sure. I've left this in for now, in // case dbe needs it. for (i = 0; i < 10000; i++) { DBE_GETREG(frm_inhwctrl, readVal); if (GET_DBE_FIELD(FRM_INHWCTRL, FRM_DMA_ENABLE, readVal) == 0) udelay(10); else { DBE_GETREG(ovr_inhwctrl, readVal); if (GET_DBE_FIELD (OVR_INHWCTRL, OVR_DMA_ENABLE, readVal) == 0) udelay(10); else { DBE_GETREG(did_inhwctrl, readVal); if (GET_DBE_FIELD (DID_INHWCTRL, DID_DMA_ENABLE, readVal) == 0) udelay(10); else break; } } } } /* * Set the User Defined Part of the Display. Again if par use it to get * real video mode. */ static int sgivwfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { struct sgivw_par *par = (struct sgivw_par *)info->par; struct dbe_timing_info *timing; u_long line_length; u_long min_mode; int req_dot; int test_mode; /* * FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal! * as FB_VMODE_SMOOTH_XPAN is only used internally */ if (var->vmode & FB_VMODE_CONUPDATE) { var->vmode |= FB_VMODE_YWRAP; var->xoffset = info->var.xoffset; var->yoffset = info->var.yoffset; } /* XXX FIXME - forcing var's */ var->xoffset = 0; var->yoffset = 0; /* Limit bpp to 8, 16, and 32 */ if (var->bits_per_pixel <= 8) var->bits_per_pixel = 8; else if (var->bits_per_pixel <= 16) var->bits_per_pixel = 16; else if (var->bits_per_pixel <= 32) var->bits_per_pixel = 32; else return -EINVAL; var->grayscale = 0; /* No grayscale for now */ /* determine valid resolution and timing */ for (min_mode = 0; min_mode < DBE_VT_SIZE; min_mode++) { if (dbeVTimings[min_mode].width >= var->xres && dbeVTimings[min_mode].height >= var->yres) break; } if (min_mode == DBE_VT_SIZE) return -EINVAL; /* Resolution to high */ /* XXX FIXME - should try to pick best refresh rate */ /* for now, pick closest dot-clock within 3MHz */ req_dot = PICOS2KHZ(var->pixclock); printk(KERN_INFO "sgivwfb: requested pixclock=%d ps (%d KHz)\n", var->pixclock, req_dot); test_mode = min_mode; while (dbeVTimings[min_mode].width == dbeVTimings[test_mode].width) { if (dbeVTimings[test_mode].cfreq + 3000 > req_dot) break; test_mode++; } if (dbeVTimings[min_mode].width != dbeVTimings[test_mode].width) test_mode--; min_mode = test_mode; timing = &dbeVTimings[min_mode]; printk(KERN_INFO "sgivwfb: granted dot-clock=%d KHz\n", timing->cfreq); /* Adjust virtual resolution, if necessary */ if (var->xres > var->xres_virtual || (!ywrap && !ypan)) var->xres_virtual = var->xres; if (var->yres > var->yres_virtual || (!ywrap && !ypan)) var->yres_virtual = var->yres; /* * Memory limit */ line_length = get_line_length(var->xres_virtual, var->bits_per_pixel); if (line_length * var->yres_virtual > sgivwfb_mem_size) return -ENOMEM; /* Virtual resolution to high */ info->fix.line_length = line_length; switch (var->bits_per_pixel) { case 8: var->red.offset = 0; var->red.length = 8; var->green.offset = 0; var->green.length = 8; var->blue.offset = 0; var->blue.length = 8; var->transp.offset = 0; var->transp.length = 0; break; case 16: /* RGBA 5551 */ var->red.offset = 11; var->red.length = 5; var->green.offset = 6; var->green.length = 5; var->blue.offset = 1; var->blue.length = 5; var->transp.offset = 0; var->transp.length = 0; break; case 32: /* RGB 8888 */ var->red.offset = 0; var->red.length = 8; var->green.offset = 8; var->green.length = 8; var->blue.offset = 16; var->blue.length = 8; var->transp.offset = 24; var->transp.length = 8; break; } var->red.msb_right = 0; var->green.msb_right = 0; var->blue.msb_right = 0; var->transp.msb_right = 0; /* set video timing information */ var->pixclock = KHZ2PICOS(timing->cfreq); var->left_margin = timing->htotal - timing->hsync_end; var->right_margin = timing->hsync_start - timing->width; var->upper_margin = timing->vtotal - timing->vsync_end; var->lower_margin = timing->vsync_start - timing->height; var->hsync_len = timing->hsync_end - timing->hsync_start; var->vsync_len = timing->vsync_end - timing->vsync_start; /* Ouch. This breaks the rules but timing_num is only important if you * change a video mode */ par->timing_num = min_mode; printk(KERN_INFO "sgivwfb: new video mode xres=%d yres=%d bpp=%d\n", var->xres, var->yres, var->bits_per_pixel); printk(KERN_INFO " vxres=%d vyres=%d\n", var->xres_virtual, var->yres_virtual); return 0; } /* * Setup flatpanel related registers. */ static void sgivwfb_setup_flatpanel(struct sgivw_par *par, struct dbe_timing_info *currentTiming) { int fp_wid, fp_hgt, fp_vbs, fp_vbe; u32 outputVal = 0; SET_DBE_FIELD(VT_FLAGS, HDRV_INVERT, outputVal, (currentTiming->flags & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1); SET_DBE_FIELD(VT_FLAGS, VDRV_INVERT, outputVal, (currentTiming->flags & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1); DBE_SETREG(vt_flags, outputVal); /* Turn on the flat panel */ switch (flatpanel_id) { case FLATPANEL_SGI_1600SW: fp_wid = 1600; fp_hgt = 1024; fp_vbs = 0; fp_vbe = 1600; currentTiming->pll_m = 4; currentTiming->pll_n = 1; currentTiming->pll_p = 0; break; default: fp_wid = fp_hgt = fp_vbs = fp_vbe = 0xfff; } outputVal = 0; SET_DBE_FIELD(FP_DE, FP_DE_ON, outputVal, fp_vbs); SET_DBE_FIELD(FP_DE, FP_DE_OFF, outputVal, fp_vbe); DBE_SETREG(fp_de, outputVal); outputVal = 0; SET_DBE_FIELD(FP_HDRV, FP_HDRV_OFF, outputVal, fp_wid); DBE_SETREG(fp_hdrv, outputVal); outputVal = 0; SET_DBE_FIELD(FP_VDRV, FP_VDRV_ON, outputVal, 1); SET_DBE_FIELD(FP_VDRV, FP_VDRV_OFF, outputVal, fp_hgt + 1); DBE_SETREG(fp_vdrv, outputVal); } /* * Set the hardware according to 'par'. */ static int sgivwfb_set_par(struct fb_info *info) { struct sgivw_par *par = info->par; int i, j, htmp, temp; u32 readVal, outputVal; int wholeTilesX, maxPixelsPerTileX; int frmWrite1, frmWrite2, frmWrite3b; struct dbe_timing_info *currentTiming; /* Current Video Timing */ int xpmax, ypmax; // Monitor resolution int bytesPerPixel; // Bytes per pixel currentTiming = &dbeVTimings[par->timing_num]; bytesPerPixel = bytes_per_pixel(info->var.bits_per_pixel); xpmax = currentTiming->width; ypmax = currentTiming->height; /* dbe_InitGraphicsBase(); */ /* Turn on dotclock PLL */ DBE_SETREG(ctrlstat, 0x20000000); dbe_TurnOffDma(par); /* dbe_CalculateScreenParams(); */ maxPixelsPerTileX = 512 / bytesPerPixel; wholeTilesX = xpmax / maxPixelsPerTileX; if (wholeTilesX * maxPixelsPerTileX < xpmax) wholeTilesX++; printk(KERN_DEBUG "sgivwfb: pixPerTile=%d wholeTilesX=%d\n", maxPixelsPerTileX, wholeTilesX); /* dbe_InitGammaMap(); */ udelay(10); for (i = 0; i < 256; i++) { DBE_ISETREG(gmap, i, (i << 24) | (i << 16) | (i << 8)); } /* dbe_TurnOn(); */ DBE_GETREG(vt_xy, readVal); if (GET_DBE_FIELD(VT_XY, VT_FREEZE, readVal) == 1) { DBE_SETREG(vt_xy, 0x00000000); udelay(1); } else dbe_TurnOffDma(par); /* dbe_Initdbe(); */ for (i = 0; i < 256; i++) { for (j = 0; j < 100; j++) { DBE_GETREG(cm_fifo, readVal); if (readVal != 0x00000000) break; else udelay(10); } // DBE_ISETREG(cmap, i, 0x00000000); DBE_ISETREG(cmap, i, (i << 8) | (i << 16) | (i << 24)); } /* dbe_InitFramebuffer(); */ frmWrite1 = 0; SET_DBE_FIELD(FRM_SIZE_TILE, FRM_WIDTH_TILE, frmWrite1, wholeTilesX); SET_DBE_FIELD(FRM_SIZE_TILE, FRM_RHS, frmWrite1, 0); switch (bytesPerPixel) { case 1: SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1, DBE_FRM_DEPTH_8); break; case 2: SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1, DBE_FRM_DEPTH_16); break; case 4: SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1, DBE_FRM_DEPTH_32); break; } frmWrite2 = 0; SET_DBE_FIELD(FRM_SIZE_PIXEL, FB_HEIGHT_PIX, frmWrite2, ypmax); // Tell dbe about the framebuffer location and type // XXX What format is the FRM_TILE_PTR?? 64K aligned address? frmWrite3b = 0; SET_DBE_FIELD(FRM_CONTROL, FRM_TILE_PTR, frmWrite3b, sgivwfb_mem_phys >> 9); SET_DBE_FIELD(FRM_CONTROL, FRM_DMA_ENABLE, frmWrite3b, 1); SET_DBE_FIELD(FRM_CONTROL, FRM_LINEAR, frmWrite3b, 1); /* Initialize DIDs */ outputVal = 0; switch (bytesPerPixel) { case 1: SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_I8); break; case 2: SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_RGBA5); break; case 4: SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_RGB8); break; } SET_DBE_FIELD(WID, BUF, outputVal, DBE_BMODE_BOTH); for (i = 0; i < 32; i++) { DBE_ISETREG(mode_regs, i, outputVal); } /* dbe_InitTiming(); */ DBE_SETREG(vt_intr01, 0xffffffff); DBE_SETREG(vt_intr23, 0xffffffff); DBE_GETREG(dotclock, readVal); DBE_SETREG(dotclock, readVal & 0xffff); DBE_SETREG(vt_xymax, 0x00000000); outputVal = 0; SET_DBE_FIELD(VT_VSYNC, VT_VSYNC_ON, outputVal, currentTiming->vsync_start); SET_DBE_FIELD(VT_VSYNC, VT_VSYNC_OFF, outputVal, currentTiming->vsync_end); DBE_SETREG(vt_vsync, outputVal); outputVal = 0; SET_DBE_FIELD(VT_HSYNC, VT_HSYNC_ON, outputVal, currentTiming->hsync_start); SET_DBE_FIELD(VT_HSYNC, VT_HSYNC_OFF, outputVal, currentTiming->hsync_end); DBE_SETREG(vt_hsync, outputVal); outputVal = 0; SET_DBE_FIELD(VT_VBLANK, VT_VBLANK_ON, outputVal, currentTiming->vblank_start); SET_DBE_FIELD(VT_VBLANK, VT_VBLANK_OFF, outputVal, currentTiming->vblank_end); DBE_SETREG(vt_vblank, outputVal); outputVal = 0; SET_DBE_FIELD(VT_HBLANK, VT_HBLANK_ON, outputVal, currentTiming->hblank_start); SET_DBE_FIELD(VT_HBLANK, VT_HBLANK_OFF, outputVal, currentTiming->hblank_end - 3); DBE_SETREG(vt_hblank, outputVal); outputVal = 0; SET_DBE_FIELD(VT_VCMAP, VT_VCMAP_ON, outputVal, currentTiming->vblank_start); SET_DBE_FIELD(VT_VCMAP, VT_VCMAP_OFF, outputVal, currentTiming->vblank_end); DBE_SETREG(vt_vcmap, outputVal); outputVal = 0; SET_DBE_FIELD(VT_HCMAP, VT_HCMAP_ON, outputVal, currentTiming->hblank_start); SET_DBE_FIELD(VT_HCMAP, VT_HCMAP_OFF, outputVal, currentTiming->hblank_end - 3); DBE_SETREG(vt_hcmap, outputVal); if (flatpanel_id != -1) sgivwfb_setup_flatpanel(par, currentTiming); outputVal = 0; temp = currentTiming->vblank_start - currentTiming->vblank_end - 1; if (temp > 0) temp = -temp; SET_DBE_FIELD(DID_START_XY, DID_STARTY, outputVal, (u32) temp); if (currentTiming->hblank_end >= 20) SET_DBE_FIELD(DID_START_XY, DID_STARTX, outputVal, currentTiming->hblank_end - 20); else SET_DBE_FIELD(DID_START_XY, DID_STARTX, outputVal, currentTiming->htotal - (20 - currentTiming-> hblank_end)); DBE_SETREG(did_start_xy, outputVal); outputVal = 0; SET_DBE_FIELD(CRS_START_XY, CRS_STARTY, outputVal, (u32) (temp + 1)); if (currentTiming->hblank_end >= DBE_CRS_MAGIC) SET_DBE_FIELD(CRS_START_XY, CRS_STARTX, outputVal, currentTiming->hblank_end - DBE_CRS_MAGIC); else SET_DBE_FIELD(CRS_START_XY, CRS_STARTX, outputVal, currentTiming->htotal - (DBE_CRS_MAGIC - currentTiming-> hblank_end)); DBE_SETREG(crs_start_xy, outputVal); outputVal = 0; SET_DBE_FIELD(VC_START_XY, VC_STARTY, outputVal, (u32) temp); SET_DBE_FIELD(VC_START_XY, VC_STARTX, outputVal, currentTiming->hblank_end - 4); DBE_SETREG(vc_start_xy, outputVal); DBE_SETREG(frm_size_tile, frmWrite1); DBE_SETREG(frm_size_pixel, frmWrite2); outputVal = 0; SET_DBE_FIELD(DOTCLK, M, outputVal, currentTiming->pll_m - 1); SET_DBE_FIELD(DOTCLK, N, outputVal, currentTiming->pll_n - 1); SET_DBE_FIELD(DOTCLK, P, outputVal, currentTiming->pll_p); SET_DBE_FIELD(DOTCLK, RUN, outputVal, 1); DBE_SETREG(dotclock, outputVal); udelay(11 * 1000); DBE_SETREG(vt_vpixen, 0xffffff); DBE_SETREG(vt_hpixen, 0xffffff); outputVal = 0; SET_DBE_FIELD(VT_XYMAX, VT_MAXX, outputVal, currentTiming->htotal); SET_DBE_FIELD(VT_XYMAX, VT_MAXY, outputVal, currentTiming->vtotal); DBE_SETREG(vt_xymax, outputVal); outputVal = frmWrite1; SET_DBE_FIELD(FRM_SIZE_TILE, FRM_FIFO_RESET, outputVal, 1); DBE_SETREG(frm_size_tile, outputVal); DBE_SETREG(frm_size_tile, frmWrite1); outputVal = 0; SET_DBE_FIELD(OVR_WIDTH_TILE, OVR_FIFO_RESET, outputVal, 1); DBE_SETREG(ovr_width_tile, outputVal); DBE_SETREG(ovr_width_tile, 0); DBE_SETREG(frm_control, frmWrite3b); DBE_SETREG(did_control, 0); // Wait for dbe to take frame settings for (i = 0; i < 100000; i++) { DBE_GETREG(frm_inhwctrl, readVal); if (GET_DBE_FIELD(FRM_INHWCTRL, FRM_DMA_ENABLE, readVal) != 0) break; else udelay(1); } if (i == 100000) printk(KERN_INFO "sgivwfb: timeout waiting for frame DMA enable.\n"); outputVal = 0; htmp = currentTiming->hblank_end - 19; if (htmp < 0) htmp += currentTiming->htotal; /* allow blank to wrap around */ SET_DBE_FIELD(VT_HPIXEN, VT_HPIXEN_ON, outputVal, htmp); SET_DBE_FIELD(VT_HPIXEN, VT_HPIXEN_OFF, outputVal, ((htmp + currentTiming->width - 2) % currentTiming->htotal)); DBE_SETREG(vt_hpixen, outputVal); outputVal = 0; SET_DBE_FIELD(VT_VPIXEN, VT_VPIXEN_OFF, outputVal, currentTiming->vblank_start); SET_DBE_FIELD(VT_VPIXEN, VT_VPIXEN_ON, outputVal, currentTiming->vblank_end); DBE_SETREG(vt_vpixen, outputVal); // Turn off mouse cursor par->regs->crs_ctl = 0; // XXX What's this section for?? DBE_GETREG(ctrlstat, readVal); readVal &= 0x02000000; if (readVal != 0) { DBE_SETREG(ctrlstat, 0x30000000); } return 0; } /* * Set a single color register. The values supplied are already * rounded down to the hardware's capabilities (according to the * entries in the var structure). Return != 0 for invalid regno. */ static int sgivwfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info) { struct sgivw_par *par = (struct sgivw_par *) info->par; if (regno > 255) return 1; red >>= 8; green >>= 8; blue >>= 8; /* wait for the color map FIFO to have a free entry */ while (par->cmap_fifo == 0) par->cmap_fifo = par->regs->cm_fifo; par->regs->cmap[regno] = (red << 24) | (green << 16) | (blue << 8); par->cmap_fifo--; /* assume FIFO is filling up */ return 0; } static int sgivwfb_mmap(struct fb_info *info, struct vm_area_struct *vma) { unsigned long size = vma->vm_end - vma->vm_start; unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) return -EINVAL; if (offset + size > sgivwfb_mem_size) return -EINVAL; offset += sgivwfb_mem_phys; pgprot_val(vma->vm_page_prot) = pgprot_val(vma->vm_page_prot) | _PAGE_PCD; vma->vm_flags |= VM_IO; if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT, size, vma->vm_page_prot)) return -EAGAIN; printk(KERN_DEBUG "sgivwfb: mmap framebuffer P(%lx)->V(%lx)\n", offset, vma->vm_start); return 0; } int __init sgivwfb_setup(char *options) { char *this_opt; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!strncmp(this_opt, "monitor:", 8)) { if (!strncmp(this_opt + 8, "crt", 3)) flatpanel_id = -1; else if (!strncmp(this_opt + 8, "1600sw", 6)) flatpanel_id = FLATPANEL_SGI_1600SW; } } return 0; } /* * Initialisation */ static int __init sgivwfb_probe(struct platform_device *dev) { struct sgivw_par *par; struct fb_info *info; char *monitor; info = framebuffer_alloc(sizeof(struct sgivw_par) + sizeof(u32) * 16, &dev->dev); if (!info) return -ENOMEM; par = info->par; if (!request_mem_region(DBE_REG_PHYS, DBE_REG_SIZE, "sgivwfb")) { printk(KERN_ERR "sgivwfb: couldn't reserve mmio region\n"); framebuffer_release(info); return -EBUSY; } par->regs = (struct asregs *) ioremap_nocache(DBE_REG_PHYS, DBE_REG_SIZE); if (!par->regs) { printk(KERN_ERR "sgivwfb: couldn't ioremap registers\n"); goto fail_ioremap_regs; } mtrr_add(sgivwfb_mem_phys, sgivwfb_mem_size, MTRR_TYPE_WRCOMB, 1); sgivwfb_fix.smem_start = sgivwfb_mem_phys; sgivwfb_fix.smem_len = sgivwfb_mem_size; sgivwfb_fix.ywrapstep = ywrap; sgivwfb_fix.ypanstep = ypan; info->fix = sgivwfb_fix; switch (flatpanel_id) { case FLATPANEL_SGI_1600SW: info->var = sgivwfb_var1600sw; monitor = "SGI 1600SW flatpanel"; break; default: info->var = sgivwfb_var; monitor = "CRT"; } printk(KERN_INFO "sgivwfb: %s monitor selected\n", monitor); info->fbops = &sgivwfb_ops; info->pseudo_palette = (void *) (par + 1); info->flags = FBINFO_DEFAULT; info->screen_base = ioremap_nocache((unsigned long) sgivwfb_mem_phys, sgivwfb_mem_size); if (!info->screen_base) { printk(KERN_ERR "sgivwfb: couldn't ioremap screen_base\n"); goto fail_ioremap_fbmem; } if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) goto fail_color_map; if (register_framebuffer(info) < 0) { printk(KERN_ERR "sgivwfb: couldn't register framebuffer\n"); goto fail_register_framebuffer; } platform_set_drvdata(dev, info); printk(KERN_INFO "fb%d: SGI DBE frame buffer device, using %ldK of video memory at %#lx\n", info->node, sgivwfb_mem_size >> 10, sgivwfb_mem_phys); return 0; fail_register_framebuffer: fb_dealloc_cmap(&info->cmap); fail_color_map: iounmap((char *) info->screen_base); fail_ioremap_fbmem: iounmap(par->regs); fail_ioremap_regs: release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE); framebuffer_release(info); return -ENXIO; } static int sgivwfb_remove(struct platform_device *dev) { struct fb_info *info = platform_get_drvdata(dev); if (info) { struct sgivw_par *par = info->par; unregister_framebuffer(info); dbe_TurnOffDma(par); iounmap(par->regs); iounmap(info->screen_base); release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE); } return 0; } static struct platform_driver sgivwfb_driver = { .probe = sgivwfb_probe, .remove = sgivwfb_remove, .driver = { .name = "sgivwfb", }, }; static struct platform_device *sgivwfb_device; int __init sgivwfb_init(void) { int ret; #ifndef MODULE char *option = NULL; if (fb_get_options("sgivwfb", &option)) return -ENODEV; sgivwfb_setup(option); #endif ret = platform_driver_register(&sgivwfb_driver); if (!ret) { sgivwfb_device = platform_device_alloc("sgivwfb", 0); if (sgivwfb_device) { ret = platform_device_add(sgivwfb_device); } else ret = -ENOMEM; if (ret) { platform_driver_unregister(&sgivwfb_driver); platform_device_put(sgivwfb_device); } } return ret; } module_init(sgivwfb_init); #ifdef MODULE MODULE_LICENSE("GPL"); static void __exit sgivwfb_exit(void) { platform_device_unregister(sgivwfb_device); platform_driver_unregister(&sgivwfb_driver); } module_exit(sgivwfb_exit); #endif /* MODULE */