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linux/drivers/video/fbdev/platinumfb.c
Finn Thain 066ac5c3c4 powerpc, fbdev: Use NV_CMODE and NV_VMODE only when CONFIG_PPC32 && CONFIG_PPC_PMAC && CONFIG_NVRAM 
This patch addresses inconsistencies in Mac framebuffer drivers and their
use of Kconfig symbols relating to NVRAM, so PPC64 can use CONFIG_NVRAM.

The defined(CONFIG_NVRAM) condition is replaced with the weaker
IS_REACHABLE(CONFIG_NVRAM) condition, like atari_scsi.

Macintosh framebuffer drivers use default settings for color mode and
video mode that are found in NVRAM. On PCI Macs, MacOS stores display
settings in the Name Registry (NR) partition in NVRAM*. On NuBus Macs,
there is no NR partition and MacOS stores display mode settings in PRAM**.

Early-model Macs are the ones most likely to benefit from these settings,
since they are more likely to have a fixed-frequency monitor connected to
the built-in framebuffer device. Moreover, a single NV_CMODE value and
a single NV_VMODE value provide for only one display.

The NV_CMODE and NV_VMODE constants are apparently offsets into the NR
partition for Old World machines. This also suggests that these defaults
are not useful on later models. The NR partition seems to be optional on
New World machines. CONFIG_NVRAM cannot be enabled on PPC64 at present.

It is safe to say that NVRAM support in PowerMac fbdev drivers is only
applicable to CONFIG_PPC32 so make this condition explicit. This means
matroxfb driver won't crash on PPC64 when CONFIG_NVRAM becomes available
there.

For imsttfb, add the missing CONFIG_NVRAM test to prevent a build failure,
since PPC64 does not implement nvram_read_byte(). Also add a missing
machine_is(powermac) check. Change the inconsistent dependency on
CONFIG_PPC and the matching #ifdef tests to CONFIG_PPC_PMAC.

For valkyriefb, to improve clarity and consistency with the other PowerMac
fbdev drivers, test for CONFIG_PPC_PMAC instead of !CONFIG_MAC. Remove a
bogus comment regarding PRAM.

* See GetPreferredConfiguration and SavePreferredConfiguration in
"Designing PCI Cards and Drivers for Power Macintosh Computers".

** See SetDefaultMode and GetDefaultMode in "Designing Cards and Drivers
for the Macintosh Family".

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-22 10:21:45 +01:00

706 lines
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/*
* 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/prom.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 = 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->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 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) {
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 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_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
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