/* * platinumfb.c -- frame buffer device for the PowerMac 'platinum' display * * Copyright (C) 1998 Franz Sirl * * Frame buffer structure from: * drivers/video/controlfb.c -- frame buffer device for * Apple 'control' display chip. * Copyright (C) 1998 Dan Jacobowitz * * Hardware information from: * platinum.c: Console support for PowerMac "platinum" display adaptor. * Copyright (C) 1996 Paul Mackerras and Mark Abene * * 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. */ #undef DEBUG #include <linux/module.h>#include <linux/kernel.h>#include <linux/errno.h>#include <linux/string.h>#include <linux/mm.h>#include <linux/vmalloc.h>#include <linux/delay.h>#include <linux/interrupt.h>#include <linux/fb.h>#include <linux/init.h>#include <linux/nvram.h>#include <linux/of.h>#include <linux/of_address.h>#include <linux/platform_device.h> #include "macmodes.h"#include "platinumfb.h" static int default_vmode = VMODE_NVRAM;static int default_cmode = CMODE_NVRAM; struct fb_info_platinum { struct fb_info *info; int vmode, cmode; int xres, yres; int vxres, vyres; int xoffset, yoffset; struct { __u8 red, green, blue; } palette[256]; u32 pseudo_palette[16]; volatile struct cmap_regs __iomem *cmap_regs; unsigned long cmap_regs_phys; volatile struct platinum_regs __iomem *platinum_regs; unsigned long platinum_regs_phys; __u8 __iomem *frame_buffer; volatile __u8 __iomem *base_frame_buffer; unsigned long frame_buffer_phys; unsigned long total_vram; int clktype; int dactype; struct resource rsrc_fb, rsrc_reg;}; /* * Frame buffer device API */ static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info);static int platinumfb_blank(int blank_mode, struct fb_info *info);static int platinumfb_set_par (struct fb_info *info);static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info); /* * internal functions */ static inline int platinum_vram_reqd(int video_mode, int color_mode);static int read_platinum_sense(struct fb_info_platinum *pinfo);static void set_platinum_clock(struct fb_info_platinum *pinfo);static void platinum_set_hardware(struct fb_info_platinum *pinfo);static int platinum_var_to_par(struct fb_var_screeninfo *var, struct fb_info_platinum *pinfo, int check_only); /* * Interface used by the world */ static const struct fb_ops platinumfb_ops = { .owner = THIS_MODULE, FB_DEFAULT_IOMEM_OPS, .fb_check_var = platinumfb_check_var, .fb_set_par = platinumfb_set_par, .fb_setcolreg = platinumfb_setcolreg, .fb_blank = platinumfb_blank,}; /* * Checks a var structure */static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info){ return platinum_var_to_par(var, info->par, 1);} /* * Applies current var to display */static int platinumfb_set_par (struct fb_info *info){ struct fb_info_platinum *pinfo = info->par; struct platinum_regvals *init; int err, offset = 0x20; if((err = platinum_var_to_par(&info->var, pinfo, 0))) { printk (KERN_ERR "platinumfb_set_par: error calling" " platinum_var_to_par: %d.\n", err); return err; } platinum_set_hardware(pinfo); init = platinum_reg_init[pinfo->vmode-1]; if ((pinfo->vmode == VMODE_832_624_75) && (pinfo->cmode > CMODE_8)) offset = 0x10; info->screen_base = pinfo->frame_buffer + init->fb_offset + offset; mutex_lock(&info->mm_lock); info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset; mutex_unlock(&info->mm_lock); info->fix.visual = (pinfo->cmode == CMODE_8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode) + offset; printk("line_length: %x\n", info->fix.line_length); return 0;} static int platinumfb_blank(int blank, struct fb_info *fb){/* * Blank the screen if blank_mode != 0, else unblank. If blank == NULL * then the caller blanks by setting the CLUT (Color Look Up Table) to all * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due * to e.g. a video mode which doesn't support it. Implements VESA suspend * and powerdown modes on hardware that supports disabling hsync/vsync: * blank_mode == 2: suspend vsync * blank_mode == 3: suspend hsync * blank_mode == 4: powerdown *//* [danj] I think there's something fishy about those constants... *//* struct fb_info_platinum *info = (struct fb_info_platinum *) fb; int ctrl; ctrl = le32_to_cpup(&info->platinum_regs->ctrl.r) | 0x33; if (blank) --blank_mode; if (blank & VESA_VSYNC_SUSPEND) ctrl &= ~3; if (blank & VESA_HSYNC_SUSPEND) ctrl &= ~0x30; out_le32(&info->platinum_regs->ctrl.r, ctrl);*//* TODO: Figure out how the heck to powerdown this thing! */ return 0;} static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info){ struct fb_info_platinum *pinfo = info->par; volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; if (regno > 255) return 1; red >>= 8; green >>= 8; blue >>= 8; pinfo->palette[regno].red = red; pinfo->palette[regno].green = green; pinfo->palette[regno].blue = blue; out_8(&cmap_regs->addr, regno); /* tell clut what addr to fill */ out_8(&cmap_regs->lut, red); /* send one color channel at */ out_8(&cmap_regs->lut, green); /* a time... */ out_8(&cmap_regs->lut, blue); if (regno < 16) { int i; u32 *pal = info->pseudo_palette; switch (pinfo->cmode) { case CMODE_16: pal[regno] = (regno << 10) | (regno << 5) | regno; break; case CMODE_32: i = (regno << 8) | regno; pal[regno] = (i << 16) | i; break; } } return 0;} static inline int platinum_vram_reqd(int video_mode, int color_mode){ int baseval = vmode_attrs[video_mode-1].hres * (1<<color_mode); if ((video_mode == VMODE_832_624_75) && (color_mode > CMODE_8)) baseval += 0x10; else baseval += 0x20; return vmode_attrs[video_mode-1].vres * baseval + 0x1000;} #define STORE_D2(a, d) { \ out_8(&cmap_regs->addr, (a+32)); \ out_8(&cmap_regs->d2, (d)); \} static void set_platinum_clock(struct fb_info_platinum *pinfo){ volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; struct platinum_regvals *init; init = platinum_reg_init[pinfo->vmode-1]; STORE_D2(6, 0xc6); out_8(&cmap_regs->addr,3+32); if (in_8(&cmap_regs->d2) == 2) { STORE_D2(7, init->clock_params[pinfo->clktype][0]); STORE_D2(8, init->clock_params[pinfo->clktype][1]); STORE_D2(3, 3); } else { STORE_D2(4, init->clock_params[pinfo->clktype][0]); STORE_D2(5, init->clock_params[pinfo->clktype][1]); STORE_D2(3, 2); } __delay(5000); STORE_D2(9, 0xa6);} /* Now how about actually saying, Make it so! *//* Some things in here probably don't need to be done each time. */static void platinum_set_hardware(struct fb_info_platinum *pinfo){ volatile struct platinum_regs __iomem *platinum_regs = pinfo->platinum_regs; volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; struct platinum_regvals *init; int i; int vmode, cmode; vmode = pinfo->vmode; cmode = pinfo->cmode; init = platinum_reg_init[vmode - 1]; /* Initialize display timing registers */ out_be32(&platinum_regs->reg[24].r, 7); /* turn display off */ for (i = 0; i < 26; ++i) out_be32(&platinum_regs->reg[i+32].r, init->regs[i]); out_be32(&platinum_regs->reg[26+32].r, (pinfo->total_vram == 0x100000 ? init->offset[cmode] + 4 - cmode : init->offset[cmode])); out_be32(&platinum_regs->reg[16].r, (unsigned) pinfo->frame_buffer_phys+init->fb_offset+0x10); out_be32(&platinum_regs->reg[18].r, init->pitch[cmode]); out_be32(&platinum_regs->reg[19].r, (pinfo->total_vram == 0x100000 ? init->mode[cmode+1] : init->mode[cmode])); out_be32(&platinum_regs->reg[20].r, (pinfo->total_vram == 0x100000 ? 0x11 : 0x1011)); out_be32(&platinum_regs->reg[21].r, 0x100); out_be32(&platinum_regs->reg[22].r, 1); out_be32(&platinum_regs->reg[23].r, 1); out_be32(&platinum_regs->reg[26].r, 0xc00); out_be32(&platinum_regs->reg[27].r, 0x235); /* out_be32(&platinum_regs->reg[27].r, 0x2aa); */ STORE_D2(0, (pinfo->total_vram == 0x100000 ? init->dacula_ctrl[cmode] & 0xf : init->dacula_ctrl[cmode])); STORE_D2(1, 4); STORE_D2(2, 0); set_platinum_clock(pinfo); out_be32(&platinum_regs->reg[24].r, 0); /* turn display on */} /* * Set misc info vars for this driver */static void platinum_init_info(struct fb_info *info, struct fb_info_platinum *pinfo){ /* Fill fb_info */ info->fbops = &platinumfb_ops; info->pseudo_palette = pinfo->pseudo_palette; info->screen_base = pinfo->frame_buffer + 0x20; fb_alloc_cmap(&info->cmap, 256, 0); /* Fill fix common fields */ strcpy(info->fix.id, "platinum"); info->fix.mmio_start = pinfo->platinum_regs_phys; info->fix.mmio_len = 0x1000; info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.smem_start = pinfo->frame_buffer_phys + 0x20; /* will be updated later */ info->fix.smem_len = pinfo->total_vram - 0x20; info->fix.ywrapstep = 0; info->fix.xpanstep = 0; info->fix.ypanstep = 0; info->fix.type_aux = 0; info->fix.accel = FB_ACCEL_NONE;} static int platinum_init_fb(struct fb_info *info){ struct fb_info_platinum *pinfo = info->par; struct fb_var_screeninfo var; int sense, rc; sense = read_platinum_sense(pinfo); printk(KERN_INFO "platinumfb: Monitor sense value = 0x%x, ", sense); if (IS_REACHABLE(CONFIG_NVRAM) && default_vmode == VMODE_NVRAM) default_vmode = nvram_read_byte(NV_VMODE); if (default_vmode <= 0 || default_vmode > VMODE_MAX || !platinum_reg_init[default_vmode - 1]) { default_vmode = mac_map_monitor_sense(sense); if (!platinum_reg_init[default_vmode - 1]) default_vmode = VMODE_640_480_60; } if (IS_REACHABLE(CONFIG_NVRAM) && default_cmode == CMODE_NVRAM) default_cmode = nvram_read_byte(NV_CMODE); if (default_cmode < CMODE_8 || default_cmode > CMODE_32) default_cmode = CMODE_8; /* * Reduce the pixel size if we don't have enough VRAM. */ while(default_cmode > CMODE_8 && platinum_vram_reqd(default_vmode, default_cmode) > pinfo->total_vram) default_cmode--; printk("platinumfb: Using video mode %d and color mode %d.\n", default_vmode, default_cmode); /* Setup default var */ if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { /* This shouldn't happen! */ printk("mac_vmode_to_var(%d, %d,) failed\n", default_vmode, default_cmode);try_again: default_vmode = VMODE_640_480_60; default_cmode = CMODE_8; if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { printk(KERN_ERR "platinumfb: mac_vmode_to_var() failed\n"); return -ENXIO; } } /* Initialize info structure */ platinum_init_info(info, pinfo); /* Apply default var */ info->var = var; var.activate = FB_ACTIVATE_NOW; rc = fb_set_var(info, &var); if (rc && (default_vmode != VMODE_640_480_60 || default_cmode != CMODE_8)) goto try_again; /* Register with fbdev layer */ rc = register_framebuffer(info); if (rc < 0) return rc; fb_info(info, "Apple Platinum frame buffer device\n"); return 0;} /* * Get the monitor sense value. * Note that this can be called before calibrate_delay, * so we can't use udelay. */static int read_platinum_sense(struct fb_info_platinum *info){ volatile struct platinum_regs __iomem *platinum_regs = info->platinum_regs; int sense; out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ __delay(2000); sense = (~in_be32(&platinum_regs->reg[23].r) & 7) << 8; /* drive each sense line low in turn and collect the other 2 */ out_be32(&platinum_regs->reg[23].r, 3); /* drive A low */ __delay(2000); sense |= (~in_be32(&platinum_regs->reg[23].r) & 3) << 4; out_be32(&platinum_regs->reg[23].r, 5); /* drive B low */ __delay(2000); sense |= (~in_be32(&platinum_regs->reg[23].r) & 4) << 1; sense |= (~in_be32(&platinum_regs->reg[23].r) & 1) << 2; out_be32(&platinum_regs->reg[23].r, 6); /* drive C low */ __delay(2000); sense |= (~in_be32(&platinum_regs->reg[23].r) & 6) >> 1; out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ return sense;} /* * This routine takes a user-supplied var, and picks the best vmode/cmode from it. * It also updates the var structure to the actual mode data obtained */static int platinum_var_to_par(struct fb_var_screeninfo *var, struct fb_info_platinum *pinfo, int check_only){ int vmode, cmode; if (mac_var_to_vmode(var, &vmode, &cmode) != 0) { printk(KERN_ERR "platinum_var_to_par: mac_var_to_vmode unsuccessful.\n"); printk(KERN_ERR "platinum_var_to_par: var->xres = %d\n", var->xres); printk(KERN_ERR "platinum_var_to_par: var->yres = %d\n", var->yres); printk(KERN_ERR "platinum_var_to_par: var->xres_virtual = %d\n", var->xres_virtual); printk(KERN_ERR "platinum_var_to_par: var->yres_virtual = %d\n", var->yres_virtual); printk(KERN_ERR "platinum_var_to_par: var->bits_per_pixel = %d\n", var->bits_per_pixel); printk(KERN_ERR "platinum_var_to_par: var->pixclock = %d\n", var->pixclock); printk(KERN_ERR "platinum_var_to_par: var->vmode = %d\n", var->vmode); return -EINVAL; } if (!platinum_reg_init[vmode-1]) { printk(KERN_ERR "platinum_var_to_par, vmode %d not valid.\n", vmode); return -EINVAL; } if (platinum_vram_reqd(vmode, cmode) > pinfo->total_vram) { printk(KERN_ERR "platinum_var_to_par, not enough ram for vmode %d, cmode %d.\n", vmode, cmode); return -EINVAL; } if (mac_vmode_to_var(vmode, cmode, var)) return -EINVAL; if (check_only) return 0; pinfo->vmode = vmode; pinfo->cmode = cmode; pinfo->xres = vmode_attrs[vmode-1].hres; pinfo->yres = vmode_attrs[vmode-1].vres; pinfo->xoffset = 0; pinfo->yoffset = 0; pinfo->vxres = pinfo->xres; pinfo->vyres = pinfo->yres; return 0;} /* * Parse user specified options (`video=platinumfb:') */static int __init platinumfb_setup(char *options){ char *this_opt; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!strncmp(this_opt, "vmode:", 6)) { int vmode = simple_strtoul(this_opt+6, NULL, 0); if (vmode > 0 && vmode <= VMODE_MAX) default_vmode = vmode; } else if (!strncmp(this_opt, "cmode:", 6)) { int depth = simple_strtoul(this_opt+6, NULL, 0); switch (depth) {Lines 1–500 of 722. Load more
/* * platinumfb.c -- frame buffer device for the PowerMac 'platinum' display * * Copyright (C) 1998 Franz Sirl * * Frame buffer structure from: * drivers/video/controlfb.c -- frame buffer device for * Apple 'control' display chip. * Copyright (C) 1998 Dan Jacobowitz * * Hardware information from: * platinum.c: Console support for PowerMac "platinum" display adaptor. * Copyright (C) 1996 Paul Mackerras and Mark Abene * * 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. */ #undef DEBUG #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/vmalloc.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/fb.h> #include <linux/init.h> #include <linux/nvram.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/platform_device.h> #include "macmodes.h" #include "platinumfb.h" static int default_vmode = VMODE_NVRAM; static int default_cmode = CMODE_NVRAM; struct fb_info_platinum { struct fb_info *info; int vmode, cmode; int xres, yres; int vxres, vyres; int xoffset, yoffset; struct { __u8 red, green, blue; } palette[256]; u32 pseudo_palette[16]; volatile struct cmap_regs __iomem *cmap_regs; unsigned long cmap_regs_phys; volatile struct platinum_regs __iomem *platinum_regs; unsigned long platinum_regs_phys; __u8 __iomem *frame_buffer; volatile __u8 __iomem *base_frame_buffer; unsigned long frame_buffer_phys; unsigned long total_vram; int clktype; int dactype; struct resource rsrc_fb, rsrc_reg; }; /* * Frame buffer device API */ static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info); static int platinumfb_blank(int blank_mode, struct fb_info *info); static int platinumfb_set_par (struct fb_info *info); static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info); /* * internal functions */ static inline int platinum_vram_reqd(int video_mode, int color_mode); static int read_platinum_sense(struct fb_info_platinum *pinfo); static void set_platinum_clock(struct fb_info_platinum *pinfo); static void platinum_set_hardware(struct fb_info_platinum *pinfo); static int platinum_var_to_par(struct fb_var_screeninfo *var, struct fb_info_platinum *pinfo, int check_only); /* * Interface used by the world */ static const struct fb_ops platinumfb_ops = { .owner = THIS_MODULE, FB_DEFAULT_IOMEM_OPS, .fb_check_var = platinumfb_check_var, .fb_set_par = platinumfb_set_par, .fb_setcolreg = platinumfb_setcolreg, .fb_blank = platinumfb_blank, }; /* * Checks a var structure */ static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info) { return platinum_var_to_par(var, info->par, 1); } /* * Applies current var to display */ static int platinumfb_set_par (struct fb_info *info) { struct fb_info_platinum *pinfo = info->par; struct platinum_regvals *init; int err, offset = 0x20; if((err = platinum_var_to_par(&info->var, pinfo, 0))) { printk (KERN_ERR "platinumfb_set_par: error calling" " platinum_var_to_par: %d.\n", err); return err; } platinum_set_hardware(pinfo); init = platinum_reg_init[pinfo->vmode-1]; if ((pinfo->vmode == VMODE_832_624_75) && (pinfo->cmode > CMODE_8)) offset = 0x10; info->screen_base = pinfo->frame_buffer + init->fb_offset + offset; mutex_lock(&info->mm_lock); info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset; mutex_unlock(&info->mm_lock); info->fix.visual = (pinfo->cmode == CMODE_8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode) + offset; printk("line_length: %x\n", info->fix.line_length); return 0; } static int platinumfb_blank(int blank, struct fb_info *fb) { /* * Blank the screen if blank_mode != 0, else unblank. If blank == NULL * then the caller blanks by setting the CLUT (Color Look Up Table) to all * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due * to e.g. a video mode which doesn't support it. Implements VESA suspend * and powerdown modes on hardware that supports disabling hsync/vsync: * blank_mode == 2: suspend vsync * blank_mode == 3: suspend hsync * blank_mode == 4: powerdown */ /* [danj] I think there's something fishy about those constants... */ /* struct fb_info_platinum *info = (struct fb_info_platinum *) fb; int ctrl; ctrl = le32_to_cpup(&info->platinum_regs->ctrl.r) | 0x33; if (blank) --blank_mode; if (blank & VESA_VSYNC_SUSPEND) ctrl &= ~3; if (blank & VESA_HSYNC_SUSPEND) ctrl &= ~0x30; out_le32(&info->platinum_regs->ctrl.r, ctrl); */ /* TODO: Figure out how the heck to powerdown this thing! */ return 0; } static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info) { struct fb_info_platinum *pinfo = info->par; volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; if (regno > 255) return 1; red >>= 8; green >>= 8; blue >>= 8; pinfo->palette[regno].red = red; pinfo->palette[regno].green = green; pinfo->palette[regno].blue = blue; out_8(&cmap_regs->addr, regno); /* tell clut what addr to fill */ out_8(&cmap_regs->lut, red); /* send one color channel at */ out_8(&cmap_regs->lut, green); /* a time... */ out_8(&cmap_regs->lut, blue); if (regno < 16) { int i; u32 *pal = info->pseudo_palette; switch (pinfo->cmode) { case CMODE_16: pal[regno] = (regno << 10) | (regno << 5) | regno; break; case CMODE_32: i = (regno << 8) | regno; pal[regno] = (i << 16) | i; break; } } return 0; } static inline int platinum_vram_reqd(int video_mode, int color_mode) { int baseval = vmode_attrs[video_mode-1].hres * (1<<color_mode); if ((video_mode == VMODE_832_624_75) && (color_mode > CMODE_8)) baseval += 0x10; else baseval += 0x20; return vmode_attrs[video_mode-1].vres * baseval + 0x1000; } #define STORE_D2(a, d) { \ out_8(&cmap_regs->addr, (a+32)); \ out_8(&cmap_regs->d2, (d)); \ } static void set_platinum_clock(struct fb_info_platinum *pinfo) { volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; struct platinum_regvals *init; init = platinum_reg_init[pinfo->vmode-1]; STORE_D2(6, 0xc6); out_8(&cmap_regs->addr,3+32); if (in_8(&cmap_regs->d2) == 2) { STORE_D2(7, init->clock_params[pinfo->clktype][0]); STORE_D2(8, init->clock_params[pinfo->clktype][1]); STORE_D2(3, 3); } else { STORE_D2(4, init->clock_params[pinfo->clktype][0]); STORE_D2(5, init->clock_params[pinfo->clktype][1]); STORE_D2(3, 2); } __delay(5000); STORE_D2(9, 0xa6); } /* Now how about actually saying, Make it so! */ /* Some things in here probably don't need to be done each time. */ static void platinum_set_hardware(struct fb_info_platinum *pinfo) { volatile struct platinum_regs __iomem *platinum_regs = pinfo->platinum_regs; volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; struct platinum_regvals *init; int i; int vmode, cmode; vmode = pinfo->vmode; cmode = pinfo->cmode; init = platinum_reg_init[vmode - 1]; /* Initialize display timing registers */ out_be32(&platinum_regs->reg[24].r, 7); /* turn display off */ for (i = 0; i < 26; ++i) out_be32(&platinum_regs->reg[i+32].r, init->regs[i]); out_be32(&platinum_regs->reg[26+32].r, (pinfo->total_vram == 0x100000 ? init->offset[cmode] + 4 - cmode : init->offset[cmode])); out_be32(&platinum_regs->reg[16].r, (unsigned) pinfo->frame_buffer_phys+init->fb_offset+0x10); out_be32(&platinum_regs->reg[18].r, init->pitch[cmode]); out_be32(&platinum_regs->reg[19].r, (pinfo->total_vram == 0x100000 ? init->mode[cmode+1] : init->mode[cmode])); out_be32(&platinum_regs->reg[20].r, (pinfo->total_vram == 0x100000 ? 0x11 : 0x1011)); out_be32(&platinum_regs->reg[21].r, 0x100); out_be32(&platinum_regs->reg[22].r, 1); out_be32(&platinum_regs->reg[23].r, 1); out_be32(&platinum_regs->reg[26].r, 0xc00); out_be32(&platinum_regs->reg[27].r, 0x235); /* out_be32(&platinum_regs->reg[27].r, 0x2aa); */ STORE_D2(0, (pinfo->total_vram == 0x100000 ? init->dacula_ctrl[cmode] & 0xf : init->dacula_ctrl[cmode])); STORE_D2(1, 4); STORE_D2(2, 0); set_platinum_clock(pinfo); out_be32(&platinum_regs->reg[24].r, 0); /* turn display on */ } /* * Set misc info vars for this driver */ static void platinum_init_info(struct fb_info *info, struct fb_info_platinum *pinfo) { /* Fill fb_info */ info->fbops = &platinumfb_ops; info->pseudo_palette = pinfo->pseudo_palette; info->screen_base = pinfo->frame_buffer + 0x20; fb_alloc_cmap(&info->cmap, 256, 0); /* Fill fix common fields */ strcpy(info->fix.id, "platinum"); info->fix.mmio_start = pinfo->platinum_regs_phys; info->fix.mmio_len = 0x1000; info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.smem_start = pinfo->frame_buffer_phys + 0x20; /* will be updated later */ info->fix.smem_len = pinfo->total_vram - 0x20; info->fix.ywrapstep = 0; info->fix.xpanstep = 0; info->fix.ypanstep = 0; info->fix.type_aux = 0; info->fix.accel = FB_ACCEL_NONE; } static int platinum_init_fb(struct fb_info *info) { struct fb_info_platinum *pinfo = info->par; struct fb_var_screeninfo var; int sense, rc; sense = read_platinum_sense(pinfo); printk(KERN_INFO "platinumfb: Monitor sense value = 0x%x, ", sense); if (IS_REACHABLE(CONFIG_NVRAM) && default_vmode == VMODE_NVRAM) default_vmode = nvram_read_byte(NV_VMODE); if (default_vmode <= 0 || default_vmode > VMODE_MAX || !platinum_reg_init[default_vmode - 1]) { default_vmode = mac_map_monitor_sense(sense); if (!platinum_reg_init[default_vmode - 1]) default_vmode = VMODE_640_480_60; } if (IS_REACHABLE(CONFIG_NVRAM) && default_cmode == CMODE_NVRAM) default_cmode = nvram_read_byte(NV_CMODE); if (default_cmode < CMODE_8 || default_cmode > CMODE_32) default_cmode = CMODE_8; /* * Reduce the pixel size if we don't have enough VRAM. */ while(default_cmode > CMODE_8 && platinum_vram_reqd(default_vmode, default_cmode) > pinfo->total_vram) default_cmode--; printk("platinumfb: Using video mode %d and color mode %d.\n", default_vmode, default_cmode); /* Setup default var */ if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { /* This shouldn't happen! */ printk("mac_vmode_to_var(%d, %d,) failed\n", default_vmode, default_cmode); try_again: default_vmode = VMODE_640_480_60; default_cmode = CMODE_8; if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { printk(KERN_ERR "platinumfb: mac_vmode_to_var() failed\n"); return -ENXIO; } } /* Initialize info structure */ platinum_init_info(info, pinfo); /* Apply default var */ info->var = var; var.activate = FB_ACTIVATE_NOW; rc = fb_set_var(info, &var); if (rc && (default_vmode != VMODE_640_480_60 || default_cmode != CMODE_8)) goto try_again; /* Register with fbdev layer */ rc = register_framebuffer(info); if (rc < 0) return rc; fb_info(info, "Apple Platinum frame buffer device\n"); return 0; } /* * Get the monitor sense value. * Note that this can be called before calibrate_delay, * so we can't use udelay. */ static int read_platinum_sense(struct fb_info_platinum *info) { volatile struct platinum_regs __iomem *platinum_regs = info->platinum_regs; int sense; out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ __delay(2000); sense = (~in_be32(&platinum_regs->reg[23].r) & 7) << 8; /* drive each sense line low in turn and collect the other 2 */ out_be32(&platinum_regs->reg[23].r, 3); /* drive A low */ __delay(2000); sense |= (~in_be32(&platinum_regs->reg[23].r) & 3) << 4; out_be32(&platinum_regs->reg[23].r, 5); /* drive B low */ __delay(2000); sense |= (~in_be32(&platinum_regs->reg[23].r) & 4) << 1; sense |= (~in_be32(&platinum_regs->reg[23].r) & 1) << 2; out_be32(&platinum_regs->reg[23].r, 6); /* drive C low */ __delay(2000); sense |= (~in_be32(&platinum_regs->reg[23].r) & 6) >> 1; out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ return sense; } /* * This routine takes a user-supplied var, and picks the best vmode/cmode from it. * It also updates the var structure to the actual mode data obtained */ static int platinum_var_to_par(struct fb_var_screeninfo *var, struct fb_info_platinum *pinfo, int check_only) { int vmode, cmode; if (mac_var_to_vmode(var, &vmode, &cmode) != 0) { printk(KERN_ERR "platinum_var_to_par: mac_var_to_vmode unsuccessful.\n"); printk(KERN_ERR "platinum_var_to_par: var->xres = %d\n", var->xres); printk(KERN_ERR "platinum_var_to_par: var->yres = %d\n", var->yres); printk(KERN_ERR "platinum_var_to_par: var->xres_virtual = %d\n", var->xres_virtual); printk(KERN_ERR "platinum_var_to_par: var->yres_virtual = %d\n", var->yres_virtual); printk(KERN_ERR "platinum_var_to_par: var->bits_per_pixel = %d\n", var->bits_per_pixel); printk(KERN_ERR "platinum_var_to_par: var->pixclock = %d\n", var->pixclock); printk(KERN_ERR "platinum_var_to_par: var->vmode = %d\n", var->vmode); return -EINVAL; } if (!platinum_reg_init[vmode-1]) { printk(KERN_ERR "platinum_var_to_par, vmode %d not valid.\n", vmode); return -EINVAL; } if (platinum_vram_reqd(vmode, cmode) > pinfo->total_vram) { printk(KERN_ERR "platinum_var_to_par, not enough ram for vmode %d, cmode %d.\n", vmode, cmode); return -EINVAL; } if (mac_vmode_to_var(vmode, cmode, var)) return -EINVAL; if (check_only) return 0; pinfo->vmode = vmode; pinfo->cmode = cmode; pinfo->xres = vmode_attrs[vmode-1].hres; pinfo->yres = vmode_attrs[vmode-1].vres; pinfo->xoffset = 0; pinfo->yoffset = 0; pinfo->vxres = pinfo->xres; pinfo->vyres = pinfo->yres; return 0; } /* * Parse user specified options (`video=platinumfb:') */ static int __init platinumfb_setup(char *options) { char *this_opt; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!strncmp(this_opt, "vmode:", 6)) { int vmode = simple_strtoul(this_opt+6, NULL, 0); if (vmode > 0 && vmode <= VMODE_MAX) default_vmode = vmode; } else if (!strncmp(this_opt, "cmode:", 6)) { int depth = simple_strtoul(this_opt+6, NULL, 0); switch (depth) {