mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 02:19:51 +00:00
![Finn Thain](/assets/img/avatar_default.png)
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>
583 lines
16 KiB
C
583 lines
16 KiB
C
/*
|
|
* valkyriefb.c -- frame buffer device for the PowerMac 'valkyrie' display
|
|
*
|
|
* Created 8 August 1998 by
|
|
* Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel
|
|
*
|
|
* Vmode-switching changes and vmode 15/17 modifications created 29 August
|
|
* 1998 by Barry K. Nathan <barryn@pobox.com>.
|
|
*
|
|
* Ported to m68k Macintosh by David Huggins-Daines <dhd@debian.org>
|
|
*
|
|
* Derived directly from:
|
|
*
|
|
* controlfb.c -- frame buffer device for the PowerMac 'control' display
|
|
* Copyright (C) 1998 Dan Jacobowitz <dan@debian.org>
|
|
*
|
|
* pmc-valkyrie.c -- Console support for PowerMac "valkyrie" display adaptor.
|
|
* Copyright (C) 1997 Paul Mackerras.
|
|
*
|
|
* and indirectly:
|
|
*
|
|
* Frame buffer structure from:
|
|
* drivers/video/chipsfb.c -- frame buffer device for
|
|
* Chips & Technologies 65550 chip.
|
|
*
|
|
* Copyright (C) 1998 Paul Mackerras
|
|
*
|
|
* This file is derived from the Powermac "chips" driver:
|
|
* Copyright (C) 1997 Fabio Riccardi.
|
|
* And from the frame buffer device for Open Firmware-initialized devices:
|
|
* Copyright (C) 1997 Geert Uytterhoeven.
|
|
*
|
|
* Hardware information from:
|
|
* control.c: Console support for PowerMac "control" display adaptor.
|
|
* Copyright (C) 1996 Paul Mackerras
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/string.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/selection.h>
|
|
#include <linux/init.h>
|
|
#include <linux/nvram.h>
|
|
#include <linux/adb.h>
|
|
#include <linux/cuda.h>
|
|
#ifdef CONFIG_MAC
|
|
#include <asm/macintosh.h>
|
|
#else
|
|
#include <asm/prom.h>
|
|
#endif
|
|
|
|
#include "macmodes.h"
|
|
#include "valkyriefb.h"
|
|
|
|
static int default_vmode = VMODE_NVRAM;
|
|
static int default_cmode = CMODE_NVRAM;
|
|
|
|
struct fb_par_valkyrie {
|
|
int vmode, cmode;
|
|
int xres, yres;
|
|
int vxres, vyres;
|
|
struct valkyrie_regvals *init;
|
|
};
|
|
|
|
struct fb_info_valkyrie {
|
|
struct fb_info info;
|
|
struct fb_par_valkyrie par;
|
|
struct cmap_regs __iomem *cmap_regs;
|
|
unsigned long cmap_regs_phys;
|
|
|
|
struct valkyrie_regs __iomem *valkyrie_regs;
|
|
unsigned long valkyrie_regs_phys;
|
|
|
|
__u8 __iomem *frame_buffer;
|
|
unsigned long frame_buffer_phys;
|
|
|
|
int sense;
|
|
unsigned long total_vram;
|
|
|
|
u32 pseudo_palette[16];
|
|
};
|
|
|
|
/*
|
|
* Exported functions
|
|
*/
|
|
int valkyriefb_init(void);
|
|
int valkyriefb_setup(char*);
|
|
|
|
static int valkyriefb_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info);
|
|
static int valkyriefb_set_par(struct fb_info *info);
|
|
static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
|
|
u_int transp, struct fb_info *info);
|
|
static int valkyriefb_blank(int blank_mode, struct fb_info *info);
|
|
|
|
static int read_valkyrie_sense(struct fb_info_valkyrie *p);
|
|
static void set_valkyrie_clock(unsigned char *params);
|
|
static int valkyrie_var_to_par(struct fb_var_screeninfo *var,
|
|
struct fb_par_valkyrie *par, const struct fb_info *fb_info);
|
|
|
|
static int valkyrie_init_info(struct fb_info *info, struct fb_info_valkyrie *p);
|
|
static void valkyrie_par_to_fix(struct fb_par_valkyrie *par, struct fb_fix_screeninfo *fix);
|
|
static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p);
|
|
|
|
static struct fb_ops valkyriefb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_check_var = valkyriefb_check_var,
|
|
.fb_set_par = valkyriefb_set_par,
|
|
.fb_setcolreg = valkyriefb_setcolreg,
|
|
.fb_blank = valkyriefb_blank,
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
};
|
|
|
|
/* Sets the video mode according to info->var */
|
|
static int valkyriefb_set_par(struct fb_info *info)
|
|
{
|
|
struct fb_info_valkyrie *p =
|
|
container_of(info, struct fb_info_valkyrie, info);
|
|
volatile struct valkyrie_regs __iomem *valkyrie_regs = p->valkyrie_regs;
|
|
struct fb_par_valkyrie *par = info->par;
|
|
struct valkyrie_regvals *init;
|
|
int err;
|
|
|
|
if ((err = valkyrie_var_to_par(&info->var, par, info)))
|
|
return err;
|
|
|
|
valkyrie_par_to_fix(par, &info->fix);
|
|
|
|
/* Reset the valkyrie */
|
|
out_8(&valkyrie_regs->status.r, 0);
|
|
udelay(100);
|
|
|
|
/* Initialize display timing registers */
|
|
init = par->init;
|
|
out_8(&valkyrie_regs->mode.r, init->mode | 0x80);
|
|
out_8(&valkyrie_regs->depth.r, par->cmode + 3);
|
|
set_valkyrie_clock(init->clock_params);
|
|
udelay(100);
|
|
|
|
/* Turn on display */
|
|
out_8(&valkyrie_regs->mode.r, init->mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int valkyrie_par_to_var(struct fb_par_valkyrie *par,
|
|
struct fb_var_screeninfo *var)
|
|
{
|
|
return mac_vmode_to_var(par->vmode, par->cmode, var);
|
|
}
|
|
|
|
static int
|
|
valkyriefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
|
|
{
|
|
int err;
|
|
struct fb_par_valkyrie par;
|
|
|
|
if ((err = valkyrie_var_to_par(var, &par, info)))
|
|
return err;
|
|
valkyrie_par_to_var(&par, var);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Blank the screen if blank_mode != 0, else unblank. If blank_mode == 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
|
|
*/
|
|
static int valkyriefb_blank(int blank_mode, struct fb_info *info)
|
|
{
|
|
struct fb_info_valkyrie *p =
|
|
container_of(info, struct fb_info_valkyrie, info);
|
|
struct fb_par_valkyrie *par = info->par;
|
|
struct valkyrie_regvals *init = par->init;
|
|
|
|
if (init == NULL)
|
|
return 1;
|
|
|
|
switch (blank_mode) {
|
|
case FB_BLANK_UNBLANK: /* unblank */
|
|
out_8(&p->valkyrie_regs->mode.r, init->mode);
|
|
break;
|
|
case FB_BLANK_NORMAL:
|
|
return 1; /* get caller to set CLUT to all black */
|
|
case FB_BLANK_VSYNC_SUSPEND:
|
|
case FB_BLANK_HSYNC_SUSPEND:
|
|
/*
|
|
* [kps] Value extracted from MacOS. I don't know
|
|
* whether this bit disables hsync or vsync, or
|
|
* whether the hardware can do the other as well.
|
|
*/
|
|
out_8(&p->valkyrie_regs->mode.r, init->mode | 0x40);
|
|
break;
|
|
case FB_BLANK_POWERDOWN:
|
|
out_8(&p->valkyrie_regs->mode.r, 0x66);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
|
|
u_int transp, struct fb_info *info)
|
|
{
|
|
struct fb_info_valkyrie *p =
|
|
container_of(info, struct fb_info_valkyrie, info);
|
|
volatile struct cmap_regs __iomem *cmap_regs = p->cmap_regs;
|
|
struct fb_par_valkyrie *par = info->par;
|
|
|
|
if (regno > 255)
|
|
return 1;
|
|
red >>= 8;
|
|
green >>= 8;
|
|
blue >>= 8;
|
|
|
|
/* tell clut which address to fill */
|
|
out_8(&p->cmap_regs->addr, regno);
|
|
udelay(1);
|
|
/* send one color channel at a time */
|
|
out_8(&cmap_regs->lut, red);
|
|
out_8(&cmap_regs->lut, green);
|
|
out_8(&cmap_regs->lut, blue);
|
|
|
|
if (regno < 16 && par->cmode == CMODE_16)
|
|
((u32 *)info->pseudo_palette)[regno] =
|
|
(regno << 10) | (regno << 5) | regno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int valkyrie_vram_reqd(int video_mode, int color_mode)
|
|
{
|
|
int pitch;
|
|
struct valkyrie_regvals *init = valkyrie_reg_init[video_mode-1];
|
|
|
|
if ((pitch = init->pitch[color_mode]) == 0)
|
|
pitch = 2 * init->pitch[0];
|
|
return init->vres * pitch;
|
|
}
|
|
|
|
static void set_valkyrie_clock(unsigned char *params)
|
|
{
|
|
#ifdef CONFIG_ADB_CUDA
|
|
struct adb_request req;
|
|
int i;
|
|
|
|
for (i = 0; i < 3; ++i) {
|
|
cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
|
|
0x50, i + 1, params[i]);
|
|
while (!req.complete)
|
|
cuda_poll();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void __init valkyrie_choose_mode(struct fb_info_valkyrie *p)
|
|
{
|
|
p->sense = read_valkyrie_sense(p);
|
|
printk(KERN_INFO "Monitor sense value = 0x%x\n", p->sense);
|
|
|
|
/* Try to pick a video mode out of NVRAM if we have one. */
|
|
#ifdef CONFIG_PPC_PMAC
|
|
if (IS_REACHABLE(CONFIG_NVRAM) && default_vmode == VMODE_NVRAM)
|
|
default_vmode = nvram_read_byte(NV_VMODE);
|
|
#endif
|
|
if (default_vmode <= 0 || default_vmode > VMODE_MAX ||
|
|
!valkyrie_reg_init[default_vmode - 1]) {
|
|
default_vmode = mac_map_monitor_sense(p->sense);
|
|
if (!valkyrie_reg_init[default_vmode - 1])
|
|
default_vmode = VMODE_640_480_67;
|
|
}
|
|
|
|
#ifdef CONFIG_PPC_PMAC
|
|
if (IS_REACHABLE(CONFIG_NVRAM) && default_cmode == CMODE_NVRAM)
|
|
default_cmode = nvram_read_byte(NV_CMODE);
|
|
#endif
|
|
/*
|
|
* Reduce the pixel size if we don't have enough VRAM or bandwidth.
|
|
*/
|
|
if (default_cmode < CMODE_8 || default_cmode > CMODE_16
|
|
|| valkyrie_reg_init[default_vmode-1]->pitch[default_cmode] == 0
|
|
|| valkyrie_vram_reqd(default_vmode, default_cmode) > p->total_vram)
|
|
default_cmode = CMODE_8;
|
|
|
|
printk(KERN_INFO "using video mode %d and color mode %d.\n",
|
|
default_vmode, default_cmode);
|
|
}
|
|
|
|
int __init valkyriefb_init(void)
|
|
{
|
|
struct fb_info_valkyrie *p;
|
|
unsigned long frame_buffer_phys, cmap_regs_phys;
|
|
int err;
|
|
char *option = NULL;
|
|
|
|
if (fb_get_options("valkyriefb", &option))
|
|
return -ENODEV;
|
|
valkyriefb_setup(option);
|
|
|
|
#ifdef CONFIG_MAC
|
|
if (!MACH_IS_MAC)
|
|
return -ENODEV;
|
|
if (!(mac_bi_data.id == MAC_MODEL_Q630
|
|
/* I'm not sure about this one */
|
|
|| mac_bi_data.id == MAC_MODEL_P588))
|
|
return -ENODEV;
|
|
|
|
/* Hardcoded addresses... welcome to 68k Macintosh country :-) */
|
|
frame_buffer_phys = 0xf9000000;
|
|
cmap_regs_phys = 0x50f24000;
|
|
#else /* ppc (!CONFIG_MAC) */
|
|
{
|
|
struct device_node *dp;
|
|
struct resource r;
|
|
|
|
dp = of_find_node_by_name(NULL, "valkyrie");
|
|
if (dp == 0)
|
|
return 0;
|
|
|
|
if (of_address_to_resource(dp, 0, &r)) {
|
|
printk(KERN_ERR "can't find address for valkyrie\n");
|
|
return 0;
|
|
}
|
|
|
|
frame_buffer_phys = r.start;
|
|
cmap_regs_phys = r.start + 0x304000;
|
|
}
|
|
#endif /* ppc (!CONFIG_MAC) */
|
|
|
|
p = kzalloc(sizeof(*p), GFP_ATOMIC);
|
|
if (p == 0)
|
|
return -ENOMEM;
|
|
|
|
/* Map in frame buffer and registers */
|
|
if (!request_mem_region(frame_buffer_phys, 0x100000, "valkyriefb")) {
|
|
kfree(p);
|
|
return 0;
|
|
}
|
|
p->total_vram = 0x100000;
|
|
p->frame_buffer_phys = frame_buffer_phys;
|
|
#ifdef CONFIG_MAC
|
|
p->frame_buffer = ioremap_nocache(frame_buffer_phys, p->total_vram);
|
|
#else
|
|
p->frame_buffer = ioremap_wt(frame_buffer_phys, p->total_vram);
|
|
#endif
|
|
p->cmap_regs_phys = cmap_regs_phys;
|
|
p->cmap_regs = ioremap(p->cmap_regs_phys, 0x1000);
|
|
p->valkyrie_regs_phys = cmap_regs_phys+0x6000;
|
|
p->valkyrie_regs = ioremap(p->valkyrie_regs_phys, 0x1000);
|
|
err = -ENOMEM;
|
|
if (p->frame_buffer == NULL || p->cmap_regs == NULL
|
|
|| p->valkyrie_regs == NULL) {
|
|
printk(KERN_ERR "valkyriefb: couldn't map resources\n");
|
|
goto out_free;
|
|
}
|
|
|
|
valkyrie_choose_mode(p);
|
|
mac_vmode_to_var(default_vmode, default_cmode, &p->info.var);
|
|
err = valkyrie_init_info(&p->info, p);
|
|
if (err < 0)
|
|
goto out_free;
|
|
valkyrie_init_fix(&p->info.fix, p);
|
|
if (valkyriefb_set_par(&p->info))
|
|
/* "can't happen" */
|
|
printk(KERN_ERR "valkyriefb: can't set default video mode\n");
|
|
|
|
if ((err = register_framebuffer(&p->info)) != 0)
|
|
goto out_cmap_free;
|
|
|
|
fb_info(&p->info, "valkyrie frame buffer device\n");
|
|
return 0;
|
|
|
|
out_cmap_free:
|
|
fb_dealloc_cmap(&p->info.cmap);
|
|
out_free:
|
|
if (p->frame_buffer)
|
|
iounmap(p->frame_buffer);
|
|
if (p->cmap_regs)
|
|
iounmap(p->cmap_regs);
|
|
if (p->valkyrie_regs)
|
|
iounmap(p->valkyrie_regs);
|
|
kfree(p);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Get the monitor sense value.
|
|
*/
|
|
static int read_valkyrie_sense(struct fb_info_valkyrie *p)
|
|
{
|
|
int sense, in;
|
|
|
|
out_8(&p->valkyrie_regs->msense.r, 0); /* release all lines */
|
|
__delay(20000);
|
|
sense = ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x70) << 4;
|
|
/* drive each sense line low in turn and collect the other 2 */
|
|
out_8(&p->valkyrie_regs->msense.r, 4); /* drive A low */
|
|
__delay(20000);
|
|
sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x30);
|
|
out_8(&p->valkyrie_regs->msense.r, 2); /* drive B low */
|
|
__delay(20000);
|
|
sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x40) >> 3;
|
|
sense |= (in & 0x10) >> 2;
|
|
out_8(&p->valkyrie_regs->msense.r, 1); /* drive C low */
|
|
__delay(20000);
|
|
sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x60) >> 5;
|
|
|
|
out_8(&p->valkyrie_regs->msense.r, 7);
|
|
|
|
return sense;
|
|
}
|
|
|
|
/*
|
|
* This routine takes a user-supplied var,
|
|
* and picks the best vmode/cmode from it.
|
|
*/
|
|
|
|
/* [bkn] I did a major overhaul of this function.
|
|
*
|
|
* Much of the old code was "swiped by jonh from atyfb.c". Because
|
|
* macmodes has mac_var_to_vmode, I felt that it would be better to
|
|
* rework this function to use that, instead of reinventing the wheel to
|
|
* add support for vmode 17. This was reinforced by the fact that
|
|
* the previously swiped atyfb.c code is no longer there.
|
|
*
|
|
* So, I swiped and adapted platinum_var_to_par (from platinumfb.c), replacing
|
|
* most, but not all, of the old code in the process. One side benefit of
|
|
* swiping the platinumfb code is that we now have more comprehensible error
|
|
* messages when a vmode/cmode switch fails. (Most of the error messages are
|
|
* platinumfb.c, but I added two of my own, and I also changed some commas
|
|
* into colons to make the messages more consistent with other Linux error
|
|
* messages.) In addition, I think the new code *might* fix some vmode-
|
|
* switching oddities, but I'm not sure.
|
|
*
|
|
* There may be some more opportunities for cleanup in here, but this is a
|
|
* good start...
|
|
*/
|
|
|
|
static int valkyrie_var_to_par(struct fb_var_screeninfo *var,
|
|
struct fb_par_valkyrie *par, const struct fb_info *fb_info)
|
|
{
|
|
int vmode, cmode;
|
|
struct valkyrie_regvals *init;
|
|
struct fb_info_valkyrie *p =
|
|
container_of(fb_info, struct fb_info_valkyrie, info);
|
|
|
|
if (mac_var_to_vmode(var, &vmode, &cmode) != 0) {
|
|
printk(KERN_ERR "valkyriefb: can't do %dx%dx%d.\n",
|
|
var->xres, var->yres, var->bits_per_pixel);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check if we know about the wanted video mode */
|
|
if (vmode < 1 || vmode > VMODE_MAX || !valkyrie_reg_init[vmode-1]) {
|
|
printk(KERN_ERR "valkyriefb: vmode %d not valid.\n", vmode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (cmode != CMODE_8 && cmode != CMODE_16) {
|
|
printk(KERN_ERR "valkyriefb: cmode %d not valid.\n", cmode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (var->xres_virtual > var->xres || var->yres_virtual > var->yres
|
|
|| var->xoffset != 0 || var->yoffset != 0) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
init = valkyrie_reg_init[vmode-1];
|
|
if (init->pitch[cmode] == 0) {
|
|
printk(KERN_ERR "valkyriefb: vmode %d does not support "
|
|
"cmode %d.\n", vmode, cmode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (valkyrie_vram_reqd(vmode, cmode) > p->total_vram) {
|
|
printk(KERN_ERR "valkyriefb: not enough ram for vmode %d, "
|
|
"cmode %d.\n", vmode, cmode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
par->vmode = vmode;
|
|
par->cmode = cmode;
|
|
par->init = init;
|
|
par->xres = var->xres;
|
|
par->yres = var->yres;
|
|
par->vxres = par->xres;
|
|
par->vyres = par->yres;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p)
|
|
{
|
|
memset(fix, 0, sizeof(*fix));
|
|
strcpy(fix->id, "valkyrie");
|
|
fix->mmio_start = p->valkyrie_regs_phys;
|
|
fix->mmio_len = sizeof(struct valkyrie_regs);
|
|
fix->type = FB_TYPE_PACKED_PIXELS;
|
|
fix->smem_start = p->frame_buffer_phys + 0x1000;
|
|
fix->smem_len = p->total_vram;
|
|
|
|
fix->type_aux = 0;
|
|
fix->ywrapstep = 0;
|
|
fix->ypanstep = 0;
|
|
fix->xpanstep = 0;
|
|
|
|
}
|
|
|
|
/* Fix must already be inited above */
|
|
static void valkyrie_par_to_fix(struct fb_par_valkyrie *par,
|
|
struct fb_fix_screeninfo *fix)
|
|
{
|
|
fix->smem_len = valkyrie_vram_reqd(par->vmode, par->cmode);
|
|
fix->visual = (par->cmode == CMODE_8) ?
|
|
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
|
|
fix->line_length = par->vxres << par->cmode;
|
|
/* ywrapstep, xpanstep, ypanstep */
|
|
}
|
|
|
|
static int __init valkyrie_init_info(struct fb_info *info,
|
|
struct fb_info_valkyrie *p)
|
|
{
|
|
info->fbops = &valkyriefb_ops;
|
|
info->screen_base = p->frame_buffer + 0x1000;
|
|
info->flags = FBINFO_DEFAULT;
|
|
info->pseudo_palette = p->pseudo_palette;
|
|
info->par = &p->par;
|
|
return fb_alloc_cmap(&info->cmap, 256, 0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Parse user specified options (`video=valkyriefb:')
|
|
*/
|
|
int __init valkyriefb_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 8:
|
|
default_cmode = CMODE_8;
|
|
break;
|
|
case 15:
|
|
case 16:
|
|
default_cmode = CMODE_16;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
module_init(valkyriefb_init);
|
|
MODULE_LICENSE("GPL");
|