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704 lines
19 KiB
704 lines
19 KiB
/* |
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* platinumfb.c -- frame buffer device for the PowerMac 'platinum' display |
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* |
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* Copyright (C) 1998 Franz Sirl |
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* |
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* Frame buffer structure from: |
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* drivers/video/controlfb.c -- frame buffer device for |
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* Apple 'control' display chip. |
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* Copyright (C) 1998 Dan Jacobowitz |
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* |
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* Hardware information from: |
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* platinum.c: Console support for PowerMac "platinum" display adaptor. |
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* Copyright (C) 1996 Paul Mackerras and Mark Abene |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive for |
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* more details. |
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*/ |
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|
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#undef DEBUG |
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|
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/errno.h> |
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#include <linux/string.h> |
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#include <linux/mm.h> |
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#include <linux/vmalloc.h> |
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#include <linux/delay.h> |
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#include <linux/interrupt.h> |
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#include <linux/fb.h> |
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#include <linux/init.h> |
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#include <linux/nvram.h> |
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#include <linux/of_device.h> |
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#include <linux/of_platform.h> |
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#include <asm/prom.h> |
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|
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#include "macmodes.h" |
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#include "platinumfb.h" |
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static int default_vmode = VMODE_NVRAM; |
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static int default_cmode = CMODE_NVRAM; |
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struct fb_info_platinum { |
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struct fb_info *info; |
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int vmode, cmode; |
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int xres, yres; |
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int vxres, vyres; |
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int xoffset, yoffset; |
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struct { |
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__u8 red, green, blue; |
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} palette[256]; |
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u32 pseudo_palette[16]; |
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volatile struct cmap_regs __iomem *cmap_regs; |
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unsigned long cmap_regs_phys; |
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volatile struct platinum_regs __iomem *platinum_regs; |
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unsigned long platinum_regs_phys; |
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__u8 __iomem *frame_buffer; |
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volatile __u8 __iomem *base_frame_buffer; |
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unsigned long frame_buffer_phys; |
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|
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unsigned long total_vram; |
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int clktype; |
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int dactype; |
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|
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struct resource rsrc_fb, rsrc_reg; |
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}; |
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|
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/* |
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* Frame buffer device API |
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*/ |
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static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
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u_int transp, struct fb_info *info); |
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static int platinumfb_blank(int blank_mode, struct fb_info *info); |
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static int platinumfb_set_par (struct fb_info *info); |
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static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info); |
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|
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/* |
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* internal functions |
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*/ |
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static inline int platinum_vram_reqd(int video_mode, int color_mode); |
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static int read_platinum_sense(struct fb_info_platinum *pinfo); |
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static void set_platinum_clock(struct fb_info_platinum *pinfo); |
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static void platinum_set_hardware(struct fb_info_platinum *pinfo); |
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static int platinum_var_to_par(struct fb_var_screeninfo *var, |
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struct fb_info_platinum *pinfo, |
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int check_only); |
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|
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/* |
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* Interface used by the world |
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*/ |
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static const struct fb_ops platinumfb_ops = { |
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.owner = THIS_MODULE, |
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.fb_check_var = platinumfb_check_var, |
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.fb_set_par = platinumfb_set_par, |
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.fb_setcolreg = platinumfb_setcolreg, |
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.fb_blank = platinumfb_blank, |
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.fb_fillrect = cfb_fillrect, |
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.fb_copyarea = cfb_copyarea, |
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.fb_imageblit = cfb_imageblit, |
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}; |
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/* |
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* Checks a var structure |
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*/ |
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static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info) |
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{ |
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return platinum_var_to_par(var, info->par, 1); |
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} |
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|
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/* |
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* Applies current var to display |
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*/ |
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static int platinumfb_set_par (struct fb_info *info) |
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{ |
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struct fb_info_platinum *pinfo = info->par; |
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struct platinum_regvals *init; |
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int err, offset = 0x20; |
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|
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if((err = platinum_var_to_par(&info->var, pinfo, 0))) { |
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printk (KERN_ERR "platinumfb_set_par: error calling" |
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" platinum_var_to_par: %d.\n", err); |
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return err; |
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} |
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platinum_set_hardware(pinfo); |
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init = platinum_reg_init[pinfo->vmode-1]; |
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if ((pinfo->vmode == VMODE_832_624_75) && (pinfo->cmode > CMODE_8)) |
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offset = 0x10; |
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info->screen_base = pinfo->frame_buffer + init->fb_offset + offset; |
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mutex_lock(&info->mm_lock); |
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info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset; |
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mutex_unlock(&info->mm_lock); |
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info->fix.visual = (pinfo->cmode == CMODE_8) ? |
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FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; |
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info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode) |
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+ offset; |
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printk("line_length: %x\n", info->fix.line_length); |
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return 0; |
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} |
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static int platinumfb_blank(int blank, struct fb_info *fb) |
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{ |
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/* |
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* Blank the screen if blank_mode != 0, else unblank. If blank == NULL |
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* then the caller blanks by setting the CLUT (Color Look Up Table) to all |
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* black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due |
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* to e.g. a video mode which doesn't support it. Implements VESA suspend |
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* and powerdown modes on hardware that supports disabling hsync/vsync: |
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* blank_mode == 2: suspend vsync |
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* blank_mode == 3: suspend hsync |
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* blank_mode == 4: powerdown |
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*/ |
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/* [danj] I think there's something fishy about those constants... */ |
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/* |
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struct fb_info_platinum *info = (struct fb_info_platinum *) fb; |
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int ctrl; |
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ctrl = le32_to_cpup(&info->platinum_regs->ctrl.r) | 0x33; |
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if (blank) |
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--blank_mode; |
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if (blank & VESA_VSYNC_SUSPEND) |
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ctrl &= ~3; |
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if (blank & VESA_HSYNC_SUSPEND) |
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ctrl &= ~0x30; |
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out_le32(&info->platinum_regs->ctrl.r, ctrl); |
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*/ |
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/* TODO: Figure out how the heck to powerdown this thing! */ |
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return 0; |
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} |
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static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
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u_int transp, struct fb_info *info) |
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{ |
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struct fb_info_platinum *pinfo = info->par; |
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volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; |
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if (regno > 255) |
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return 1; |
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red >>= 8; |
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green >>= 8; |
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blue >>= 8; |
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pinfo->palette[regno].red = red; |
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pinfo->palette[regno].green = green; |
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pinfo->palette[regno].blue = blue; |
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out_8(&cmap_regs->addr, regno); /* tell clut what addr to fill */ |
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out_8(&cmap_regs->lut, red); /* send one color channel at */ |
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out_8(&cmap_regs->lut, green); /* a time... */ |
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out_8(&cmap_regs->lut, blue); |
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if (regno < 16) { |
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int i; |
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u32 *pal = info->pseudo_palette; |
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switch (pinfo->cmode) { |
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case CMODE_16: |
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pal[regno] = (regno << 10) | (regno << 5) | regno; |
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break; |
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case CMODE_32: |
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i = (regno << 8) | regno; |
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pal[regno] = (i << 16) | i; |
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break; |
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} |
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} |
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return 0; |
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} |
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static inline int platinum_vram_reqd(int video_mode, int color_mode) |
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{ |
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int baseval = vmode_attrs[video_mode-1].hres * (1<<color_mode); |
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if ((video_mode == VMODE_832_624_75) && (color_mode > CMODE_8)) |
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baseval += 0x10; |
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else |
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baseval += 0x20; |
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return vmode_attrs[video_mode-1].vres * baseval + 0x1000; |
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} |
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#define STORE_D2(a, d) { \ |
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out_8(&cmap_regs->addr, (a+32)); \ |
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out_8(&cmap_regs->d2, (d)); \ |
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} |
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static void set_platinum_clock(struct fb_info_platinum *pinfo) |
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{ |
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volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; |
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struct platinum_regvals *init; |
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init = platinum_reg_init[pinfo->vmode-1]; |
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STORE_D2(6, 0xc6); |
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out_8(&cmap_regs->addr,3+32); |
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if (in_8(&cmap_regs->d2) == 2) { |
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STORE_D2(7, init->clock_params[pinfo->clktype][0]); |
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STORE_D2(8, init->clock_params[pinfo->clktype][1]); |
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STORE_D2(3, 3); |
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} else { |
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STORE_D2(4, init->clock_params[pinfo->clktype][0]); |
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STORE_D2(5, init->clock_params[pinfo->clktype][1]); |
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STORE_D2(3, 2); |
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} |
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__delay(5000); |
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STORE_D2(9, 0xa6); |
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} |
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/* Now how about actually saying, Make it so! */ |
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/* Some things in here probably don't need to be done each time. */ |
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static void platinum_set_hardware(struct fb_info_platinum *pinfo) |
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{ |
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volatile struct platinum_regs __iomem *platinum_regs = pinfo->platinum_regs; |
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volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; |
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struct platinum_regvals *init; |
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int i; |
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int vmode, cmode; |
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vmode = pinfo->vmode; |
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cmode = pinfo->cmode; |
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init = platinum_reg_init[vmode - 1]; |
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/* Initialize display timing registers */ |
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out_be32(&platinum_regs->reg[24].r, 7); /* turn display off */ |
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for (i = 0; i < 26; ++i) |
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out_be32(&platinum_regs->reg[i+32].r, init->regs[i]); |
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out_be32(&platinum_regs->reg[26+32].r, (pinfo->total_vram == 0x100000 ? |
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init->offset[cmode] + 4 - cmode : |
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init->offset[cmode])); |
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out_be32(&platinum_regs->reg[16].r, (unsigned) pinfo->frame_buffer_phys+init->fb_offset+0x10); |
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out_be32(&platinum_regs->reg[18].r, init->pitch[cmode]); |
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out_be32(&platinum_regs->reg[19].r, (pinfo->total_vram == 0x100000 ? |
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init->mode[cmode+1] : |
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init->mode[cmode])); |
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out_be32(&platinum_regs->reg[20].r, (pinfo->total_vram == 0x100000 ? 0x11 : 0x1011)); |
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out_be32(&platinum_regs->reg[21].r, 0x100); |
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out_be32(&platinum_regs->reg[22].r, 1); |
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out_be32(&platinum_regs->reg[23].r, 1); |
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out_be32(&platinum_regs->reg[26].r, 0xc00); |
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out_be32(&platinum_regs->reg[27].r, 0x235); |
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/* out_be32(&platinum_regs->reg[27].r, 0x2aa); */ |
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STORE_D2(0, (pinfo->total_vram == 0x100000 ? |
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init->dacula_ctrl[cmode] & 0xf : |
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init->dacula_ctrl[cmode])); |
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STORE_D2(1, 4); |
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STORE_D2(2, 0); |
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set_platinum_clock(pinfo); |
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out_be32(&platinum_regs->reg[24].r, 0); /* turn display on */ |
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} |
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/* |
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* Set misc info vars for this driver |
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*/ |
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static void platinum_init_info(struct fb_info *info, |
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struct fb_info_platinum *pinfo) |
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{ |
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/* Fill fb_info */ |
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info->fbops = &platinumfb_ops; |
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info->pseudo_palette = pinfo->pseudo_palette; |
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info->flags = FBINFO_DEFAULT; |
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info->screen_base = pinfo->frame_buffer + 0x20; |
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fb_alloc_cmap(&info->cmap, 256, 0); |
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/* Fill fix common fields */ |
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strcpy(info->fix.id, "platinum"); |
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info->fix.mmio_start = pinfo->platinum_regs_phys; |
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info->fix.mmio_len = 0x1000; |
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info->fix.type = FB_TYPE_PACKED_PIXELS; |
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info->fix.smem_start = pinfo->frame_buffer_phys + 0x20; /* will be updated later */ |
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info->fix.smem_len = pinfo->total_vram - 0x20; |
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info->fix.ywrapstep = 0; |
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info->fix.xpanstep = 0; |
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info->fix.ypanstep = 0; |
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info->fix.type_aux = 0; |
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info->fix.accel = FB_ACCEL_NONE; |
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} |
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static int platinum_init_fb(struct fb_info *info) |
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{ |
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struct fb_info_platinum *pinfo = info->par; |
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struct fb_var_screeninfo var; |
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int sense, rc; |
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sense = read_platinum_sense(pinfo); |
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printk(KERN_INFO "platinumfb: Monitor sense value = 0x%x, ", sense); |
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if (IS_REACHABLE(CONFIG_NVRAM) && default_vmode == VMODE_NVRAM) |
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default_vmode = nvram_read_byte(NV_VMODE); |
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if (default_vmode <= 0 || default_vmode > VMODE_MAX || |
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!platinum_reg_init[default_vmode - 1]) { |
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default_vmode = mac_map_monitor_sense(sense); |
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if (!platinum_reg_init[default_vmode - 1]) |
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default_vmode = VMODE_640_480_60; |
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} |
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if (IS_REACHABLE(CONFIG_NVRAM) && default_cmode == CMODE_NVRAM) |
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default_cmode = nvram_read_byte(NV_CMODE); |
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if (default_cmode < CMODE_8 || default_cmode > CMODE_32) |
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default_cmode = CMODE_8; |
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/* |
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* Reduce the pixel size if we don't have enough VRAM. |
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*/ |
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while(default_cmode > CMODE_8 && |
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platinum_vram_reqd(default_vmode, default_cmode) > pinfo->total_vram) |
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default_cmode--; |
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printk("platinumfb: Using video mode %d and color mode %d.\n", default_vmode, default_cmode); |
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/* Setup default var */ |
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if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { |
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/* This shouldn't happen! */ |
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printk("mac_vmode_to_var(%d, %d,) failed\n", default_vmode, default_cmode); |
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try_again: |
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default_vmode = VMODE_640_480_60; |
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default_cmode = CMODE_8; |
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if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { |
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printk(KERN_ERR "platinumfb: mac_vmode_to_var() failed\n"); |
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return -ENXIO; |
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} |
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} |
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/* Initialize info structure */ |
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platinum_init_info(info, pinfo); |
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/* Apply default var */ |
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info->var = var; |
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var.activate = FB_ACTIVATE_NOW; |
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rc = fb_set_var(info, &var); |
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if (rc && (default_vmode != VMODE_640_480_60 || default_cmode != CMODE_8)) |
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goto try_again; |
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/* Register with fbdev layer */ |
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rc = register_framebuffer(info); |
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if (rc < 0) |
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return rc; |
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fb_info(info, "Apple Platinum frame buffer device\n"); |
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return 0; |
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} |
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/* |
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* Get the monitor sense value. |
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* Note that this can be called before calibrate_delay, |
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* so we can't use udelay. |
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*/ |
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static int read_platinum_sense(struct fb_info_platinum *info) |
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{ |
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volatile struct platinum_regs __iomem *platinum_regs = info->platinum_regs; |
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int sense; |
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out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ |
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__delay(2000); |
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sense = (~in_be32(&platinum_regs->reg[23].r) & 7) << 8; |
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|
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/* drive each sense line low in turn and collect the other 2 */ |
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out_be32(&platinum_regs->reg[23].r, 3); /* drive A low */ |
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__delay(2000); |
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sense |= (~in_be32(&platinum_regs->reg[23].r) & 3) << 4; |
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out_be32(&platinum_regs->reg[23].r, 5); /* drive B low */ |
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__delay(2000); |
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sense |= (~in_be32(&platinum_regs->reg[23].r) & 4) << 1; |
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sense |= (~in_be32(&platinum_regs->reg[23].r) & 1) << 2; |
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out_be32(&platinum_regs->reg[23].r, 6); /* drive C low */ |
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__delay(2000); |
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sense |= (~in_be32(&platinum_regs->reg[23].r) & 6) >> 1; |
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out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ |
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return sense; |
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} |
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/* |
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* This routine takes a user-supplied var, and picks the best vmode/cmode from it. |
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* It also updates the var structure to the actual mode data obtained |
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*/ |
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static int platinum_var_to_par(struct fb_var_screeninfo *var, |
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struct fb_info_platinum *pinfo, |
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int check_only) |
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{ |
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int vmode, cmode; |
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if (mac_var_to_vmode(var, &vmode, &cmode) != 0) { |
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printk(KERN_ERR "platinum_var_to_par: mac_var_to_vmode unsuccessful.\n"); |
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printk(KERN_ERR "platinum_var_to_par: var->xres = %d\n", var->xres); |
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printk(KERN_ERR "platinum_var_to_par: var->yres = %d\n", var->yres); |
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printk(KERN_ERR "platinum_var_to_par: var->xres_virtual = %d\n", var->xres_virtual); |
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printk(KERN_ERR "platinum_var_to_par: var->yres_virtual = %d\n", var->yres_virtual); |
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printk(KERN_ERR "platinum_var_to_par: var->bits_per_pixel = %d\n", var->bits_per_pixel); |
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printk(KERN_ERR "platinum_var_to_par: var->pixclock = %d\n", var->pixclock); |
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printk(KERN_ERR "platinum_var_to_par: var->vmode = %d\n", var->vmode); |
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return -EINVAL; |
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} |
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|
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if (!platinum_reg_init[vmode-1]) { |
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printk(KERN_ERR "platinum_var_to_par, vmode %d not valid.\n", vmode); |
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return -EINVAL; |
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} |
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|
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if (platinum_vram_reqd(vmode, cmode) > pinfo->total_vram) { |
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printk(KERN_ERR "platinum_var_to_par, not enough ram for vmode %d, cmode %d.\n", vmode, cmode); |
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return -EINVAL; |
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} |
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|
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if (mac_vmode_to_var(vmode, cmode, var)) |
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return -EINVAL; |
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|
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if (check_only) |
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return 0; |
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|
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pinfo->vmode = vmode; |
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pinfo->cmode = cmode; |
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pinfo->xres = vmode_attrs[vmode-1].hres; |
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pinfo->yres = vmode_attrs[vmode-1].vres; |
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pinfo->xoffset = 0; |
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pinfo->yoffset = 0; |
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pinfo->vxres = pinfo->xres; |
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pinfo->vyres = pinfo->yres; |
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|
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return 0; |
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} |
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/* |
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* Parse user specified options (`video=platinumfb:') |
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*/ |
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static int __init platinumfb_setup(char *options) |
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{ |
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char *this_opt; |
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|
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if (!options || !*options) |
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return 0; |
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|
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while ((this_opt = strsep(&options, ",")) != NULL) { |
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if (!strncmp(this_opt, "vmode:", 6)) { |
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int vmode = simple_strtoul(this_opt+6, NULL, 0); |
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if (vmode > 0 && vmode <= VMODE_MAX) |
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default_vmode = vmode; |
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} else if (!strncmp(this_opt, "cmode:", 6)) { |
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int depth = simple_strtoul(this_opt+6, NULL, 0); |
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switch (depth) { |
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case 0: |
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case 8: |
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default_cmode = CMODE_8; |
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break; |
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case 15: |
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case 16: |
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default_cmode = CMODE_16; |
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break; |
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case 24: |
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case 32: |
|
default_cmode = CMODE_32; |
|
break; |
|
} |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
#ifdef __powerpc__ |
|
#define invalidate_cache(addr) \ |
|
asm volatile("eieio; dcbf 0,%1" \ |
|
: "=m" (*(addr)) : "r" (addr) : "memory"); |
|
#else |
|
#define invalidate_cache(addr) |
|
#endif |
|
|
|
static int platinumfb_probe(struct platform_device* odev) |
|
{ |
|
struct device_node *dp = odev->dev.of_node; |
|
struct fb_info *info; |
|
struct fb_info_platinum *pinfo; |
|
volatile __u8 *fbuffer; |
|
int bank0, bank1, bank2, bank3, rc; |
|
|
|
dev_info(&odev->dev, "Found Apple Platinum video hardware\n"); |
|
|
|
info = framebuffer_alloc(sizeof(*pinfo), &odev->dev); |
|
if (!info) |
|
return -ENOMEM; |
|
|
|
pinfo = info->par; |
|
|
|
if (of_address_to_resource(dp, 0, &pinfo->rsrc_reg) || |
|
of_address_to_resource(dp, 1, &pinfo->rsrc_fb)) { |
|
dev_err(&odev->dev, "Can't get resources\n"); |
|
framebuffer_release(info); |
|
return -ENXIO; |
|
} |
|
dev_dbg(&odev->dev, " registers : 0x%llx...0x%llx\n", |
|
(unsigned long long)pinfo->rsrc_reg.start, |
|
(unsigned long long)pinfo->rsrc_reg.end); |
|
dev_dbg(&odev->dev, " framebuffer: 0x%llx...0x%llx\n", |
|
(unsigned long long)pinfo->rsrc_fb.start, |
|
(unsigned long long)pinfo->rsrc_fb.end); |
|
|
|
/* Do not try to request register space, they overlap with the |
|
* northbridge and that can fail. Only request framebuffer |
|
*/ |
|
if (!request_mem_region(pinfo->rsrc_fb.start, |
|
resource_size(&pinfo->rsrc_fb), |
|
"platinumfb framebuffer")) { |
|
printk(KERN_ERR "platinumfb: Can't request framebuffer !\n"); |
|
framebuffer_release(info); |
|
return -ENXIO; |
|
} |
|
|
|
/* frame buffer - map only 4MB */ |
|
pinfo->frame_buffer_phys = pinfo->rsrc_fb.start; |
|
pinfo->frame_buffer = ioremap_wt(pinfo->rsrc_fb.start, 0x400000); |
|
pinfo->base_frame_buffer = pinfo->frame_buffer; |
|
|
|
/* registers */ |
|
pinfo->platinum_regs_phys = pinfo->rsrc_reg.start; |
|
pinfo->platinum_regs = ioremap(pinfo->rsrc_reg.start, 0x1000); |
|
|
|
pinfo->cmap_regs_phys = 0xf301b000; /* XXX not in prom? */ |
|
request_mem_region(pinfo->cmap_regs_phys, 0x1000, "platinumfb cmap"); |
|
pinfo->cmap_regs = ioremap(pinfo->cmap_regs_phys, 0x1000); |
|
|
|
/* Grok total video ram */ |
|
out_be32(&pinfo->platinum_regs->reg[16].r, (unsigned)pinfo->frame_buffer_phys); |
|
out_be32(&pinfo->platinum_regs->reg[20].r, 0x1011); /* select max vram */ |
|
out_be32(&pinfo->platinum_regs->reg[24].r, 0); /* switch in vram */ |
|
|
|
fbuffer = pinfo->base_frame_buffer; |
|
fbuffer[0x100000] = 0x34; |
|
fbuffer[0x100008] = 0x0; |
|
invalidate_cache(&fbuffer[0x100000]); |
|
fbuffer[0x200000] = 0x56; |
|
fbuffer[0x200008] = 0x0; |
|
invalidate_cache(&fbuffer[0x200000]); |
|
fbuffer[0x300000] = 0x78; |
|
fbuffer[0x300008] = 0x0; |
|
invalidate_cache(&fbuffer[0x300000]); |
|
bank0 = 1; /* builtin 1MB vram, always there */ |
|
bank1 = fbuffer[0x100000] == 0x34; |
|
bank2 = fbuffer[0x200000] == 0x56; |
|
bank3 = fbuffer[0x300000] == 0x78; |
|
pinfo->total_vram = (bank0 + bank1 + bank2 + bank3) * 0x100000; |
|
printk(KERN_INFO "platinumfb: Total VRAM = %dMB (%d%d%d%d)\n", |
|
(unsigned int) (pinfo->total_vram / 1024 / 1024), |
|
bank3, bank2, bank1, bank0); |
|
|
|
/* |
|
* Try to determine whether we have an old or a new DACula. |
|
*/ |
|
out_8(&pinfo->cmap_regs->addr, 0x40); |
|
pinfo->dactype = in_8(&pinfo->cmap_regs->d2); |
|
switch (pinfo->dactype) { |
|
case 0x3c: |
|
pinfo->clktype = 1; |
|
printk(KERN_INFO "platinumfb: DACula type 0x3c\n"); |
|
break; |
|
case 0x84: |
|
pinfo->clktype = 0; |
|
printk(KERN_INFO "platinumfb: DACula type 0x84\n"); |
|
break; |
|
default: |
|
pinfo->clktype = 0; |
|
printk(KERN_INFO "platinumfb: Unknown DACula type: %x\n", pinfo->dactype); |
|
break; |
|
} |
|
dev_set_drvdata(&odev->dev, info); |
|
|
|
rc = platinum_init_fb(info); |
|
if (rc != 0) { |
|
iounmap(pinfo->frame_buffer); |
|
iounmap(pinfo->platinum_regs); |
|
iounmap(pinfo->cmap_regs); |
|
framebuffer_release(info); |
|
} |
|
|
|
return rc; |
|
} |
|
|
|
static int platinumfb_remove(struct platform_device* odev) |
|
{ |
|
struct fb_info *info = dev_get_drvdata(&odev->dev); |
|
struct fb_info_platinum *pinfo = info->par; |
|
|
|
unregister_framebuffer (info); |
|
|
|
/* Unmap frame buffer and registers */ |
|
iounmap(pinfo->frame_buffer); |
|
iounmap(pinfo->platinum_regs); |
|
iounmap(pinfo->cmap_regs); |
|
|
|
release_mem_region(pinfo->rsrc_fb.start, |
|
resource_size(&pinfo->rsrc_fb)); |
|
|
|
release_mem_region(pinfo->cmap_regs_phys, 0x1000); |
|
|
|
framebuffer_release(info); |
|
|
|
return 0; |
|
} |
|
|
|
static struct of_device_id platinumfb_match[] = |
|
{ |
|
{ |
|
.name = "platinum", |
|
}, |
|
{}, |
|
}; |
|
|
|
static struct platform_driver platinum_driver = |
|
{ |
|
.driver = { |
|
.name = "platinumfb", |
|
.of_match_table = platinumfb_match, |
|
}, |
|
.probe = platinumfb_probe, |
|
.remove = platinumfb_remove, |
|
}; |
|
|
|
static int __init platinumfb_init(void) |
|
{ |
|
#ifndef MODULE |
|
char *option = NULL; |
|
|
|
if (fb_get_options("platinumfb", &option)) |
|
return -ENODEV; |
|
platinumfb_setup(option); |
|
#endif |
|
platform_driver_register(&platinum_driver); |
|
|
|
return 0; |
|
} |
|
|
|
static void __exit platinumfb_exit(void) |
|
{ |
|
platform_driver_unregister(&platinum_driver); |
|
} |
|
|
|
MODULE_LICENSE("GPL"); |
|
MODULE_DESCRIPTION("framebuffer driver for Apple Platinum video"); |
|
module_init(platinumfb_init); |
|
|
|
#ifdef MODULE |
|
module_exit(platinumfb_exit); |
|
#endif
|
|
|