mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 20:51:44 +00:00
b57287ba49
According to the comments in include/linux/init.h: "Pointers to __devexit functions must use __devexit_p(function_name), the wrapper will insert either the function_name or NULL, depending on the config options." We have __devexit annotation for platinumfb_remove(), thus add __devexit_p at necessary place. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
715 lines
20 KiB
C
715 lines
20 KiB
C
/*
|
|
* 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_device.h>
|
|
#include <linux/of_platform.h>
|
|
#include <asm/io.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/pgtable.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 struct fb_ops platinumfb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_check_var = platinumfb_check_var,
|
|
.fb_set_par = platinumfb_set_par,
|
|
.fb_setcolreg = platinumfb_setcolreg,
|
|
.fb_blank = platinumfb_blank,
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
};
|
|
|
|
/*
|
|
* 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 = ld_le32(&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 __devinit 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->flags = FBINFO_DEFAULT;
|
|
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 __devinit 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 (default_vmode == VMODE_NVRAM) {
|
|
#ifdef CONFIG_NVRAM
|
|
default_vmode = nvram_read_byte(NV_VMODE);
|
|
if (default_vmode <= 0 || default_vmode > VMODE_MAX ||
|
|
!platinum_reg_init[default_vmode-1])
|
|
#endif
|
|
default_vmode = VMODE_CHOOSE;
|
|
}
|
|
if (default_vmode == VMODE_CHOOSE) {
|
|
default_vmode = mac_map_monitor_sense(sense);
|
|
}
|
|
if (default_vmode <= 0 || default_vmode > VMODE_MAX)
|
|
default_vmode = VMODE_640_480_60;
|
|
#ifdef CONFIG_NVRAM
|
|
if (default_cmode == CMODE_NVRAM)
|
|
default_cmode = nvram_read_byte(NV_CMODE);
|
|
#endif
|
|
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;
|
|
|
|
printk(KERN_INFO "fb%d: Apple Platinum frame buffer device\n", info->node);
|
|
|
|
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) {
|
|
case 0:
|
|
case 8:
|
|
default_cmode = CMODE_8;
|
|
break;
|
|
case 15:
|
|
case 16:
|
|
default_cmode = CMODE_16;
|
|
break;
|
|
case 24:
|
|
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 __devinit 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 == NULL) {
|
|
dev_err(&odev->dev, "Failed to allocate fbdev !\n");
|
|
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(pinfo->rsrc_fb.start, 0x400000,
|
|
_PAGE_WRITETHRU);
|
|
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);
|
|
dev_set_drvdata(&odev->dev, NULL);
|
|
framebuffer_release(info);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int __devexit 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",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = platinumfb_match,
|
|
},
|
|
.probe = platinumfb_probe,
|
|
.remove = __devexit_p(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
|