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kernel / pub / scm / linux / kernel / git / wtarreau / linux-2.4 / 49058df0259fc87187ae8f9cce3e3223e0643c83 / . / drivers / video / cyber2000fb.c
blob: 5b54810ff1a1f7f1673a535f2ac0a84dafb67d71 [file] [log] [blame]
/*
* linux/drivers/video/cyber2000fb.c
*
* Copyright (C) 1998-2000 Russell King
*
* MIPS and 50xx clock support
* Copyright (C) 2001 Bradley D. LaRonde <brad@ltc.com>
*
* 32 bit support, text color and panning fixes for modes != 8 bit
* Copyright (C) 2002 Denis Oliver Kropp <dok@directfb.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Intergraphics CyberPro 2000, 2010 and 5000 frame buffer device
*
* Based on cyberfb.c.
*
* Note that we now use the new fbcon fix, var and cmap scheme. We do still
* have to check which console is the currently displayed one however, since
* especially for the colourmap stuff. Once fbcon has been fully migrated,
* we can kill the last 5 references to cfb->currcon.
*
* We also use the new hotplug PCI subsystem. I'm not sure if there are any
* such cards, but I'm erring on the side of caution. We don't want to go
* pop just because someone does have one.
*
* Note that this doesn't work fully in the case of multiple CyberPro cards
* with grabbers. We currently can only attach to the first CyberPro card
* found.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <video/fbcon.h>
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
#include <video/fbcon-cfb24.h>
#include <video/fbcon-cfb32.h>
/*
* Define this if you don't want RGB565, but RGB555 for 16bpp displays.
*/
/*#define CFB16_IS_CFB15*/
#include "cyber2000fb.h"
struct cfb_info {
struct fb_info fb;
struct display_switch *dispsw;
struct pci_dev *dev;
unsigned char *region;
unsigned char *regs;
signed int currcon;
int func_use_count;
u_long ref_ps;
/*
* Clock divisors
*/
u_int divisors[4];
struct {
u8 red, green, blue;
} palette[NR_PALETTE];
u_char mem_ctl1;
u_char mem_ctl2;
u_char mclk_mult;
u_char mclk_div;
};
static char default_font_storage[40];
static char *default_font = "Acorn8x8";
MODULE_PARM(default_font, "s");
MODULE_PARM_DESC(default_font, "Default font name");
/*
* Our access methods.
*/
#define cyber2000fb_writel(val,reg,cfb) writel(val, (cfb)->regs + (reg))
#define cyber2000fb_writew(val,reg,cfb) writew(val, (cfb)->regs + (reg))
#define cyber2000fb_writeb(val,reg,cfb) writeb(val, (cfb)->regs + (reg))
#define cyber2000fb_readb(reg,cfb) readb((cfb)->regs + (reg))
static inline void
cyber2000_crtcw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
{
cyber2000fb_writew((reg & 255) | val << 8, 0x3d4, cfb);
}
static inline void
cyber2000_grphw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
{
cyber2000fb_writew((reg & 255) | val << 8, 0x3ce, cfb);
}
static inline unsigned int
cyber2000_grphr(unsigned int reg, struct cfb_info *cfb)
{
cyber2000fb_writeb(reg, 0x3ce, cfb);
return cyber2000fb_readb(0x3cf, cfb);
}
static inline void
cyber2000_attrw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
{
cyber2000fb_readb(0x3da, cfb);
cyber2000fb_writeb(reg, 0x3c0, cfb);
cyber2000fb_readb(0x3c1, cfb);
cyber2000fb_writeb(val, 0x3c0, cfb);
}
static inline void
cyber2000_seqw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
{
cyber2000fb_writew((reg & 255) | val << 8, 0x3c4, cfb);
}
/* -------------------- Hardware specific routines ------------------------- */
/*
* Hardware Cyber2000 Acceleration
*/
static void cyber2000_accel_wait(struct cfb_info *cfb)
{
int count = 100000;
while (cyber2000fb_readb(CO_REG_CONTROL, cfb) & 0x80) {
if (!count--) {
debug_printf("accel_wait timed out\n");
cyber2000fb_writeb(0, CO_REG_CONTROL, cfb);
return;
}
udelay(1);
}
}
static void cyber2000_accel_setup(struct display *p)
{
struct cfb_info *cfb = (struct cfb_info *)p->fb_info;
cfb->dispsw->setup(p);
}
static void
cyber2000_accel_bmove(struct display *p, int sy, int sx, int dy, int dx,
int height, int width)
{
struct cfb_info *cfb = (struct cfb_info *)p->fb_info;
struct fb_var_screeninfo *var = &p->fb_info->var;
u_long src, dst;
u_int fh, fw;
int cmd = CO_CMD_L_PATTERN_FGCOL;
fw = fontwidth(p);
sx *= fw;
dx *= fw;
width *= fw;
width -= 1;
if (sx < dx) {
sx += width;
dx += width;
cmd |= CO_CMD_L_INC_LEFT;
}
fh = fontheight(p);
sy *= fh;
dy *= fh;
height *= fh;
height -= 1;
if (sy < dy) {
sy += height;
dy += height;
cmd |= CO_CMD_L_INC_UP;
}
src = sx + sy * var->xres_virtual;
dst = dx + dy * var->xres_virtual;
cyber2000_accel_wait(cfb);
cyber2000fb_writeb(0x00, CO_REG_CONTROL, cfb);
cyber2000fb_writeb(0x03, CO_REG_FORE_MIX, cfb);
cyber2000fb_writew(width, CO_REG_WIDTH, cfb);
if (var->bits_per_pixel != 24) {
cyber2000fb_writel(dst, CO_REG_DEST_PTR, cfb);
cyber2000fb_writel(src, CO_REG_SRC_PTR, cfb);
} else {
cyber2000fb_writel(dst * 3, CO_REG_DEST_PTR, cfb);
cyber2000fb_writeb(dst, CO_REG_X_PHASE, cfb);
cyber2000fb_writel(src * 3, CO_REG_SRC_PTR, cfb);
}
cyber2000fb_writew(height, CO_REG_HEIGHT, cfb);
cyber2000fb_writew(cmd, CO_REG_CMD_L, cfb);
cyber2000fb_writew(0x2800, CO_REG_CMD_H, cfb);
}
static void
cyber2000_accel_clear(struct vc_data *conp, struct display *p, int sy, int sx,
int height, int width)
{
struct cfb_info *cfb = (struct cfb_info *)p->fb_info;
struct fb_var_screeninfo *var = &p->fb_info->var;
u_long dst;
u_int fw, fh;
u32 bgx = attr_bgcol_ec(p, conp);
fw = fontwidth(p);
fh = fontheight(p);
dst = sx * fw + sy * var->xres_virtual * fh;
width = width * fw - 1;
height = height * fh - 1;
cyber2000_accel_wait(cfb);
cyber2000fb_writeb(0x00, CO_REG_CONTROL, cfb);
cyber2000fb_writeb(0x03, CO_REG_FORE_MIX, cfb);
cyber2000fb_writew(width, CO_REG_WIDTH, cfb);
cyber2000fb_writew(height, CO_REG_HEIGHT, cfb);
switch (var->bits_per_pixel) {
case 15:
case 16:
bgx = ((u16 *)p->dispsw_data)[bgx];
case 8:
cyber2000fb_writel(dst, CO_REG_DEST_PTR, cfb);
break;
case 24:
cyber2000fb_writel(dst * 3, CO_REG_DEST_PTR, cfb);
cyber2000fb_writeb(dst, CO_REG_X_PHASE, cfb);
bgx = ((u32 *)p->dispsw_data)[bgx];
break;
case 32:
bgx = ((u32 *)p->dispsw_data)[bgx];
cyber2000fb_writel(dst, CO_REG_DEST_PTR, cfb);
break;
}
cyber2000fb_writel(bgx, CO_REG_FOREGROUND, cfb);
cyber2000fb_writew(CO_CMD_L_PATTERN_FGCOL, CO_REG_CMD_L, cfb);
cyber2000fb_writew(0x0800, CO_REG_CMD_H, cfb);
}
static void
cyber2000_accel_putc(struct vc_data *conp, struct display *p, int c,
int yy, int xx)
{
struct cfb_info *cfb = (struct cfb_info *)p->fb_info;
cyber2000_accel_wait(cfb);
cfb->dispsw->putc(conp, p, c, yy, xx);
}
static void
cyber2000_accel_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count, int yy, int xx)
{
struct cfb_info *cfb = (struct cfb_info *)p->fb_info;
cyber2000_accel_wait(cfb);
cfb->dispsw->putcs(conp, p, s, count, yy, xx);
}
static void cyber2000_accel_revc(struct display *p, int xx, int yy)
{
struct cfb_info *cfb = (struct cfb_info *)p->fb_info;
cyber2000_accel_wait(cfb);
cfb->dispsw->revc(p, xx, yy);
}
static void
cyber2000_accel_clear_margins(struct vc_data *conp, struct display *p,
int bottom_only)
{
struct cfb_info *cfb = (struct cfb_info *)p->fb_info;
cfb->dispsw->clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_cyber_accel = {
setup: cyber2000_accel_setup,
bmove: cyber2000_accel_bmove,
clear: cyber2000_accel_clear,
putc: cyber2000_accel_putc,
putcs: cyber2000_accel_putcs,
revc: cyber2000_accel_revc,
clear_margins: cyber2000_accel_clear_margins,
fontwidthmask: FONTWIDTH(8)|FONTWIDTH(16)
};
/*
* Set a single color register. Return != 0 for invalid regno.
*/
static int
cyber2000_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
{
struct cfb_info *cfb = (struct cfb_info *)info;
u_int alpha = transp ^ 0xFFFF;
if (regno >= NR_PALETTE)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
alpha >>= 8;
cfb->palette[regno].red = red;
cfb->palette[regno].green = green;
cfb->palette[regno].blue = blue;
switch (cfb->fb.var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
cyber2000fb_writeb(regno, 0x3c8, cfb);
cyber2000fb_writeb(red, 0x3c9, cfb);
cyber2000fb_writeb(green, 0x3c9, cfb);
cyber2000fb_writeb(blue, 0x3c9, cfb);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
#ifndef CFB16_IS_CFB15
if (regno < 64) {
/* write green */
cyber2000fb_writeb(regno << 2, 0x3c8, cfb);
cyber2000fb_writeb(cfb->palette[regno >> 1].red, 0x3c9, cfb);
cyber2000fb_writeb(green, 0x3c9, cfb);
cyber2000fb_writeb(cfb->palette[regno >> 1].blue, 0x3c9, cfb);
}
if (regno < 32) {
/* write red,blue */
cyber2000fb_writeb(regno << 3, 0x3c8, cfb);
cyber2000fb_writeb(red, 0x3c9, cfb);
cyber2000fb_writeb(cfb->palette[regno << 1].green, 0x3c9, cfb);
cyber2000fb_writeb(blue, 0x3c9, cfb);
}
if (regno < 16)
((u16 *)cfb->fb.pseudo_palette)[regno] =
((red << 8) & 0xf800) |
((green << 3) & 0x07e0) |
((blue >> 3));
break;
#endif
case 15:
if (regno < 32) {
cyber2000fb_writeb(regno << 3, 0x3c8, cfb);
cyber2000fb_writeb(red, 0x3c9, cfb);
cyber2000fb_writeb(green, 0x3c9, cfb);
cyber2000fb_writeb(blue, 0x3c9, cfb);
}
if (regno < 16)
((u16 *)cfb->fb.pseudo_palette)[regno] =
((red << 7) & 0x7c00) |
((green << 2) & 0x03e0) |
((blue >> 3));
break;
#endif
#ifdef FBCON_HAS_CFB24
case 24:
cyber2000fb_writeb(regno, 0x3c8, cfb);
cyber2000fb_writeb(red, 0x3c9, cfb);
cyber2000fb_writeb(green, 0x3c9, cfb);
cyber2000fb_writeb(blue, 0x3c9, cfb);
if (regno < 16)
((u32 *)cfb->fb.pseudo_palette)[regno] =
(red << 16) | (green << 8) | blue;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
cyber2000fb_writeb(regno, 0x3c8, cfb);
cyber2000fb_writeb(red, 0x3c9, cfb);
cyber2000fb_writeb(green, 0x3c9, cfb);
cyber2000fb_writeb(blue, 0x3c9, cfb);
if (regno < 16)
((u32 *)cfb->fb.pseudo_palette)[regno] =
(alpha << 24) | (red << 16) | (green << 8) | blue;
break;
#endif
default:
return 1;
}
return 0;
}
struct par_info {
/*
* Hardware
*/
u_char clock_mult;
u_char clock_div;
u_char visualid;
u_char pixformat;
u_char crtc_ofl;
u_char crtc[19];
u_int width;
u_int pitch;
u_int fetch;
/*
* Other
*/
u_char palette_ctrl;
u_int vmode;
};
static const u_char crtc_idx[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18
};
static void cyber2000fb_set_timing(struct cfb_info *cfb, struct par_info *hw)
{
u_int i;
/*
* Blank palette
*/
for (i = 0; i < NR_PALETTE; i++) {
cyber2000fb_writeb(i, 0x3c8, cfb);
cyber2000fb_writeb(0, 0x3c9, cfb);
cyber2000fb_writeb(0, 0x3c9, cfb);
cyber2000fb_writeb(0, 0x3c9, cfb);
}
cyber2000fb_writeb(0xef, 0x3c2, cfb);
cyber2000_crtcw(0x11, 0x0b, cfb);
cyber2000_attrw(0x11, 0x00, cfb);
cyber2000_seqw(0x00, 0x01, cfb);
cyber2000_seqw(0x01, 0x01, cfb);
cyber2000_seqw(0x02, 0x0f, cfb);
cyber2000_seqw(0x03, 0x00, cfb);
cyber2000_seqw(0x04, 0x0e, cfb);
cyber2000_seqw(0x00, 0x03, cfb);
for (i = 0; i < sizeof(crtc_idx); i++)
cyber2000_crtcw(crtc_idx[i], hw->crtc[i], cfb);
for (i = 0x0a; i < 0x10; i++)
cyber2000_crtcw(i, 0, cfb);
cyber2000_grphw(0x11, hw->crtc_ofl, cfb);
cyber2000_grphw(0x00, 0x00, cfb);
cyber2000_grphw(0x01, 0x00, cfb);
cyber2000_grphw(0x02, 0x00, cfb);
cyber2000_grphw(0x03, 0x00, cfb);
cyber2000_grphw(0x04, 0x00, cfb);
cyber2000_grphw(0x05, 0x60, cfb);
cyber2000_grphw(0x06, 0x05, cfb);
cyber2000_grphw(0x07, 0x0f, cfb);
cyber2000_grphw(0x08, 0xff, cfb);
/* Attribute controller registers */
for (i = 0; i < 16; i++)
cyber2000_attrw(i, i, cfb);
cyber2000_attrw(0x10, 0x01, cfb);
cyber2000_attrw(0x11, 0x00, cfb);
cyber2000_attrw(0x12, 0x0f, cfb);
cyber2000_attrw(0x13, 0x00, cfb);
cyber2000_attrw(0x14, 0x00, cfb);
/* woody: set the interlaced bit... */
/* FIXME: what about doublescan? */
cyber2000fb_writeb(0x11, 0x3ce, cfb);
i = cyber2000fb_readb(0x3cf, cfb);
if (hw->vmode == FB_VMODE_INTERLACED)
i |= 0x20;
else
i &= ~0x20;
cyber2000fb_writeb(i, 0x3cf, cfb);
/* PLL registers */
cyber2000_grphw(DCLK_MULT, hw->clock_mult, cfb);
cyber2000_grphw(DCLK_DIV, hw->clock_div, cfb);
cyber2000_grphw(MCLK_MULT, cfb->mclk_mult, cfb);
cyber2000_grphw(MCLK_DIV, cfb->mclk_div, cfb);
cyber2000_grphw(0x90, 0x01, cfb);
cyber2000_grphw(0xb9, 0x80, cfb);
cyber2000_grphw(0xb9, 0x00, cfb);
cyber2000fb_writeb(0x56, 0x3ce, cfb);
i = cyber2000fb_readb(0x3cf, cfb);
cyber2000fb_writeb(i | 4, 0x3cf, cfb);
cyber2000fb_writeb(hw->palette_ctrl, 0x3c6, cfb);
cyber2000fb_writeb(i, 0x3cf, cfb);
cyber2000fb_writeb(0x20, 0x3c0, cfb);
cyber2000fb_writeb(0xff, 0x3c6, cfb);
cyber2000_grphw(0x14, hw->fetch, cfb);
cyber2000_grphw(0x15, ((hw->fetch >> 8) & 0x03) |
((hw->pitch >> 4) & 0x30), cfb);
cyber2000_grphw(0x77, hw->visualid, cfb);
/* make sure we stay in linear mode */
cyber2000_grphw(0x33, 0x0d, cfb);
/*
* Set up accelerator registers
*/
cyber2000fb_writew(hw->width, CO_REG_SRC_WIDTH, cfb);
cyber2000fb_writew(hw->width, CO_REG_DEST_WIDTH, cfb);
cyber2000fb_writeb(hw->pixformat, CO_REG_PIX_FORMAT, cfb);
}
static inline int
cyber2000fb_update_start(struct cfb_info *cfb, struct fb_var_screeninfo *var)
{
u_int base;
base = var->yoffset * var->xres_virtual + var->xoffset;
/* have to be careful, because bits_per_pixel might be 15
in this version of the driver -- dok@directfb.org 2002/06/13 */
base *= (var->bits_per_pixel + 7) >> 3;
base >>= 2;
if (base >= 1 << 20)
return -EINVAL;
cyber2000_grphw(0x10, base >> 16 | 0x10, cfb);
cyber2000_crtcw(0x0c, base >> 8, cfb);
cyber2000_crtcw(0x0d, base, cfb);
return 0;
}
/*
* Set the Colormap
*/
static int
cyber2000fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info)
{
struct cfb_info *cfb = (struct cfb_info *)info;
struct fb_cmap *dcmap = &fb_display[con].cmap;
int err = 0;
/* no colormap allocated? */
if (!dcmap->len) {
int size;
if (cfb->fb.var.bits_per_pixel == 16)
size = 32;
else
size = 256;
err = fb_alloc_cmap(dcmap, size, 0);
}
/*
* we should be able to remove this test once fbcon has been
* "improved" --rmk
*/
if (!err && con == cfb->currcon) {
err = fb_set_cmap(cmap, kspc, cyber2000_setcolreg, &cfb->fb);
dcmap = &cfb->fb.cmap;
}
if (!err)
fb_copy_cmap(cmap, dcmap, kspc ? 0 : 1);
return err;
}
static int
cyber2000fb_decode_crtc(struct par_info *hw, struct cfb_info *cfb,
struct fb_var_screeninfo *var)
{
u_int Htotal, Hblankend, Hsyncend;
u_int Vtotal, Vdispend, Vblankstart, Vblankend, Vsyncstart, Vsyncend;
#define BIT(v,b1,m,b2) (((v >> b1) & m) << b2)
hw->crtc[13] = hw->pitch;
hw->crtc[17] = 0xe3;
hw->crtc[14] = 0;
hw->crtc[8] = 0;
Htotal = var->xres + var->right_margin +
var->hsync_len + var->left_margin;
if (Htotal > 2080)
return -EINVAL;
hw->crtc[0] = (Htotal >> 3) - 5;
hw->crtc[1] = (var->xres >> 3) - 1;
hw->crtc[2] = var->xres >> 3;
hw->crtc[4] = (var->xres + var->right_margin) >> 3;
Hblankend = (Htotal - 4*8) >> 3;
hw->crtc[3] = BIT(Hblankend, 0, 0x1f, 0) |
BIT(1, 0, 0x01, 7);
Hsyncend = (var->xres + var->right_margin + var->hsync_len) >> 3;
hw->crtc[5] = BIT(Hsyncend, 0, 0x1f, 0) |
BIT(Hblankend, 5, 0x01, 7);
Vdispend = var->yres - 1;
Vsyncstart = var->yres + var->lower_margin;
Vsyncend = var->yres + var->lower_margin + var->vsync_len;
Vtotal = var->yres + var->lower_margin + var->vsync_len +
var->upper_margin - 2;
if (Vtotal > 2047)
return -EINVAL;
Vblankstart = var->yres + 6;
Vblankend = Vtotal - 10;
hw->crtc[6] = Vtotal;
hw->crtc[7] = BIT(Vtotal, 8, 0x01, 0) |
BIT(Vdispend, 8, 0x01, 1) |
BIT(Vsyncstart, 8, 0x01, 2) |
BIT(Vblankstart,8, 0x01, 3) |
BIT(1, 0, 0x01, 4) |
BIT(Vtotal, 9, 0x01, 5) |
BIT(Vdispend, 9, 0x01, 6) |
BIT(Vsyncstart, 9, 0x01, 7);
hw->crtc[9] = BIT(0, 0, 0x1f, 0) |
BIT(Vblankstart,9, 0x01, 5) |
BIT(1, 0, 0x01, 6);
hw->crtc[10] = Vsyncstart;
hw->crtc[11] = BIT(Vsyncend, 0, 0x0f, 0) |
BIT(1, 0, 0x01, 7);
hw->crtc[12] = Vdispend;
hw->crtc[15] = Vblankstart;
hw->crtc[16] = Vblankend;
hw->crtc[18] = 0xff;
/* overflow - graphics reg 0x11 */
/* 0=VTOTAL:10 1=VDEND:10 2=VRSTART:10 3=VBSTART:10
* 4=LINECOMP:10 5-IVIDEO 6=FIXCNT
*/
hw->crtc_ofl =
BIT(Vtotal, 10, 0x01, 0) |
BIT(Vdispend, 10, 0x01, 1) |
BIT(Vsyncstart, 10, 0x01, 2) |
BIT(Vblankstart,10, 0x01, 3) |
1 << 4;
return 0;
}
/*
* The following was discovered by a good monitor, bit twiddling, theorising
* and but mostly luck. Strangely, it looks like everyone elses' PLL!
*
* Clock registers:
* fclock = fpll / div2
* fpll = fref * mult / div1
* where:
* fref = 14.318MHz (69842ps)
* mult = reg0xb0.7:0
* div1 = (reg0xb1.5:0 + 1)
* div2 = 2^(reg0xb1.7:6)
* fpll should be between 115 and 260 MHz
* (8696ps and 3846ps)
*/
static int
cyber2000fb_decode_clock(struct par_info *hw, struct cfb_info *cfb,
struct fb_var_screeninfo *var)
{
u_long pll_ps = var->pixclock;
const u_long ref_ps = cfb->ref_ps;
u_int div2, t_div1, best_div1, best_mult;
int best_diff;
int vco;
/*
* Step 1:
* find div2 such that 115MHz < fpll < 260MHz
* and 0 <= div2 < 4
*/
for (div2 = 0; div2 < 4; div2++) {
u_long new_pll;
new_pll = pll_ps / cfb->divisors[div2];
if (8696 > new_pll && new_pll > 3846) {
pll_ps = new_pll;
break;
}
}
if (div2 == 4)
return -EINVAL;
/*
* Step 2:
* Given pll_ps and ref_ps, find:
* pll_ps * 0.995 < pll_ps_calc < pll_ps * 1.005
* where { 1 < best_div1 < 32, 1 < best_mult < 256 }
* pll_ps_calc = best_div1 / (ref_ps * best_mult)
*/
best_diff = 0x7fffffff;
best_mult = 32;
best_div1 = 255;
for (t_div1 = 32; t_div1 > 1; t_div1 -= 1) {
u_int rr, t_mult, t_pll_ps;
int diff;
/*
* Find the multiplier for this divisor
*/
rr = ref_ps * t_div1;
t_mult = (rr + pll_ps / 2) / pll_ps;
/*
* Is the multiplier within the correct range?
*/
if (t_mult > 256 || t_mult < 2)
continue;
/*
* Calculate the actual clock period from this multiplier
* and divisor, and estimate the error.
*/
t_pll_ps = (rr + t_mult / 2) / t_mult;
diff = pll_ps - t_pll_ps;
if (diff < 0)
diff = -diff;
if (diff < best_diff) {
best_diff = diff;
best_mult = t_mult;
best_div1 = t_div1;
}
/*
* If we hit an exact value, there is no point in continuing.
*/
if (diff == 0)
break;
}
/*
* Step 3:
* combine values
*/
hw->clock_mult = best_mult - 1;
hw->clock_div = div2 << 6 | (best_div1 - 1);
vco = ref_ps * best_div1 / best_mult;
if ((ref_ps == 40690) && (vco < 5556))
/* Set VFSEL when VCO > 180MHz (5.556 ps). */
hw->clock_div |= DCLK_DIV_VFSEL;
return 0;
}
/*
* Decode the info required for the hardware.
* This involves the PLL parameters for the dot clock,
* CRTC registers, and accelerator settings.
*/
static int
cyber2000fb_decode_var(struct fb_var_screeninfo *var, struct cfb_info *cfb,
struct par_info *hw)
{
int err;
hw->width = var->xres_virtual;
hw->palette_ctrl = 0x06;
hw->vmode = var->vmode;
switch (var->bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8: /* PSEUDOCOLOUR, 256 */
hw->pixformat = PIXFORMAT_8BPP;
hw->visualid = VISUALID_256;
hw->pitch = hw->width >> 3;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:/* DIRECTCOLOUR, 64k */
#ifndef CFB16_IS_CFB15
hw->pixformat = PIXFORMAT_16BPP;
hw->visualid = VISUALID_64K;
hw->pitch = hw->width >> 2;
hw->palette_ctrl |= 0x10;
break;
#endif
case 15:/* DIRECTCOLOUR, 32k */
hw->pixformat = PIXFORMAT_16BPP;
hw->visualid = VISUALID_32K;
hw->pitch = hw->width >> 2;
hw->palette_ctrl |= 0x10;
break;
#endif
#ifdef FBCON_HAS_CFB24
case 24:/* TRUECOLOUR, 16m */
hw->pixformat = PIXFORMAT_24BPP;
hw->visualid = VISUALID_16M;
hw->width *= 3;
hw->pitch = hw->width >> 3;
hw->palette_ctrl |= 0x10;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:/* TRUECOLOUR, 16m */
hw->pixformat = PIXFORMAT_32BPP;
hw->visualid = VISUALID_16M_32;
hw->pitch = hw->width >> 1;
hw->palette_ctrl |= 0x10;
break;
#endif
default:
return -EINVAL;
}
err = cyber2000fb_decode_clock(hw, cfb, var);
if (err)
return err;
err = cyber2000fb_decode_crtc(hw, cfb, var);
if (err)
return err;
hw->width -= 1;
hw->fetch = hw->pitch;
if (!(cfb->mem_ctl2 & MEM_CTL2_64BIT))
hw->fetch <<= 1;
hw->fetch += 1;
return 0;
}
/*
* Set the User Defined Part of the Display
*/
static int
cyber2000fb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
struct cfb_info *cfb = (struct cfb_info *)info;
struct display *display;
struct par_info hw;
int err, chgvar = 0;
/*
* CONUPDATE and SMOOTH_XPAN are equal. However,
* SMOOTH_XPAN is only used internally by fbcon.
*/
if (var->vmode & FB_VMODE_CONUPDATE) {
var->vmode |= FB_VMODE_YWRAP;
var->xoffset = cfb->fb.var.xoffset;
var->yoffset = cfb->fb.var.yoffset;
}
err = cyber2000fb_decode_var(var, (struct cfb_info *)info, &hw);
if (err)
return err;
if (var->activate & FB_ACTIVATE_TEST)
return 0;
if ((var->activate & FB_ACTIVATE_MASK) != FB_ACTIVATE_NOW)
return -EINVAL;
if (cfb->fb.var.xres != var->xres)
chgvar = 1;
if (cfb->fb.var.yres != var->yres)
chgvar = 1;
if (cfb->fb.var.xres_virtual != var->xres_virtual)
chgvar = 1;
if (cfb->fb.var.yres_virtual != var->yres_virtual)
chgvar = 1;
if (cfb->fb.var.bits_per_pixel != var->bits_per_pixel)
chgvar = 1;
if (con < 0) {
display = cfb->fb.disp;
chgvar = 0;
} else {
display = fb_display + con;
}
var->red.msb_right = 0;
var->green.msb_right = 0;
var->blue.msb_right = 0;
switch (var->bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8: /* PSEUDOCOLOUR, 256 */
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
cfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
cfb->dispsw = &fbcon_cfb8;
display->dispsw_data = NULL;
display->next_line = var->xres_virtual;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:/* DIRECTCOLOUR, 64k */
#ifndef CFB16_IS_CFB15
var->red.offset = 11;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 0;
var->blue.length = 5;
cfb->fb.fix.visual = FB_VISUAL_DIRECTCOLOR;
cfb->dispsw = &fbcon_cfb16;
display->dispsw_data = cfb->fb.pseudo_palette;
display->next_line = var->xres_virtual * 2;
break;
#endif
case 15:/* DIRECTCOLOUR, 32k */
var->bits_per_pixel = 15;
var->red.offset = 10;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 5;
var->blue.offset = 0;
var->blue.length = 5;
cfb->fb.fix.visual = FB_VISUAL_DIRECTCOLOR;
cfb->dispsw = &fbcon_cfb16;
display->dispsw_data = cfb->fb.pseudo_palette;
display->next_line = var->xres_virtual * 2;
break;
#endif
#ifdef FBCON_HAS_CFB24
case 24:/* TRUECOLOUR, 16m */
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
cfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
cfb->dispsw = &fbcon_cfb24;
display->dispsw_data = cfb->fb.pseudo_palette;
display->next_line = var->xres_virtual * 3;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:/* TRUECOLOUR, 16m */
var->transp.offset = 24;
var->transp.length = 8;
var->red.offset = 16;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
cfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
cfb->dispsw = &fbcon_cfb32;
display->dispsw_data = cfb->fb.pseudo_palette;
display->next_line = var->xres_virtual * 4;
break;
#endif
default:/* in theory this should never happen */
printk(KERN_WARNING "%s: no support for %dbpp\n",
cfb->fb.fix.id, var->bits_per_pixel);
cfb->dispsw = &fbcon_dummy;
break;
}
if (var->accel_flags & FB_ACCELF_TEXT && cfb->dispsw != &fbcon_dummy)
display->dispsw = &fbcon_cyber_accel;
else
display->dispsw = cfb->dispsw;
cfb->fb.fix.line_length = display->next_line;
display->screen_base = cfb->fb.screen_base;
display->line_length = cfb->fb.fix.line_length;
display->visual = cfb->fb.fix.visual;
display->type = cfb->fb.fix.type;
display->type_aux = cfb->fb.fix.type_aux;
display->ypanstep = cfb->fb.fix.ypanstep;
display->ywrapstep = cfb->fb.fix.ywrapstep;
display->can_soft_blank = 1;
display->inverse = 0;
cfb->fb.var = *var;
cfb->fb.var.activate &= ~FB_ACTIVATE_ALL;
/*
* Update the old var. The fbcon drivers still use this.
* Once they are using cfb->fb.var, this can be dropped.
* --rmk
*/
display->var = cfb->fb.var;
/*
* If we are setting all the virtual consoles, also set the
* defaults used to create new consoles.
*/
if (var->activate & FB_ACTIVATE_ALL)
cfb->fb.disp->var = cfb->fb.var;
if (chgvar && info && cfb->fb.changevar)
cfb->fb.changevar(con);
cyber2000fb_update_start(cfb, var);
cyber2000fb_set_timing(cfb, &hw);
fb_set_cmap(&cfb->fb.cmap, 1, cyber2000_setcolreg, &cfb->fb);
return 0;
}
/*
* Pan or Wrap the Display
*/
static int
cyber2000fb_pan_display(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
struct cfb_info *cfb = (struct cfb_info *)info;
u_int y_bottom;
y_bottom = var->yoffset;
if (!(var->vmode & FB_VMODE_YWRAP))
y_bottom += var->yres;
if (var->xoffset > (var->xres_virtual - var->xres))
return -EINVAL;
if (y_bottom > cfb->fb.var.yres_virtual)
return -EINVAL;
if (cyber2000fb_update_start(cfb, var))
return -EINVAL;
cfb->fb.var.xoffset = var->xoffset;
cfb->fb.var.yoffset = var->yoffset;
if (var->vmode & FB_VMODE_YWRAP) {
cfb->fb.var.vmode |= FB_VMODE_YWRAP;
} else {
cfb->fb.var.vmode &= ~FB_VMODE_YWRAP;
}
return 0;
}
/*
* Update the `var' structure (called by fbcon.c)
*
* This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
* Since it's called by a kernel driver, no range checking is done.
*/
static int cyber2000fb_updatevar(int con, struct fb_info *info)
{
struct cfb_info *cfb = (struct cfb_info *)info;
return cyber2000fb_update_start(cfb, &fb_display[con].var);
}
static int cyber2000fb_switch(int con, struct fb_info *info)
{
struct cfb_info *cfb = (struct cfb_info *)info;
struct display *disp;
struct fb_cmap *cmap;
if (cfb->currcon >= 0) {
disp = fb_display + cfb->currcon;
/*
* Save the old colormap and video mode.
*/
disp->var = cfb->fb.var;
if (disp->cmap.len)
fb_copy_cmap(&cfb->fb.cmap, &disp->cmap, 0);
}
cfb->currcon = con;
disp = fb_display + con;
/*
* Install the new colormap and change the video mode. By default,
* fbcon sets all the colormaps and video modes to the default
* values at bootup.
*
* Really, we want to set the colourmap size depending on the
* depth of the new video mode. For now, we leave it at its
* default 256 entry.
*/
if (disp->cmap.len)
cmap = &disp->cmap;
else
cmap = fb_default_cmap(1 << disp->var.bits_per_pixel);
fb_copy_cmap(cmap, &cfb->fb.cmap, 0);
cfb->fb.var = disp->var;
cfb->fb.var.activate = FB_ACTIVATE_NOW;
cyber2000fb_set_var(&cfb->fb.var, con, &cfb->fb);
return 0;
}
/*
* (Un)Blank the display.
*/
static void cyber2000fb_blank(int blank, struct fb_info *info)
{
struct cfb_info *cfb = (struct cfb_info *)info;
int i;
/*
* 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
*
* wms...Enable VESA DMPS compatible powerdown mode
* run "setterm -powersave powerdown" to take advantage
*/
switch (blank) {
case 4: /* powerdown - both sync lines down */
cyber2000_grphw(0x16, 0x05, cfb);
break;
case 3: /* hsync off */
cyber2000_grphw(0x16, 0x01, cfb);
break;
case 2: /* vsync off */
cyber2000_grphw(0x16, 0x04, cfb);
break;
case 1: /* soft blank */
cyber2000_grphw(0x16, 0x00, cfb);
for (i = 0; i < NR_PALETTE; i++) {
cyber2000fb_writeb(i, 0x3c8, cfb);
cyber2000fb_writeb(0, 0x3c9, cfb);
cyber2000fb_writeb(0, 0x3c9, cfb);
cyber2000fb_writeb(0, 0x3c9, cfb);
}
break;
default: /* unblank */
cyber2000_grphw(0x16, 0x00, cfb);
for (i = 0; i < NR_PALETTE; i++) {
cyber2000fb_writeb(i, 0x3c8, cfb);
cyber2000fb_writeb(cfb->palette[i].red, 0x3c9, cfb);
cyber2000fb_writeb(cfb->palette[i].green, 0x3c9, cfb);
cyber2000fb_writeb(cfb->palette[i].blue, 0x3c9, cfb);
}
break;
}
}
/*
* Get the currently displayed virtual consoles colormap.
*/
static int
gen_get_cmap(struct fb_cmap *cmap, int kspc, int con, struct fb_info *info)
{
fb_copy_cmap(&info->cmap, cmap, kspc ? 0 : 2);
return 0;
}
/*
* Get the currently displayed virtual consoles fixed part of the display.
*/
static int
gen_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info)
{
*fix = info->fix;
return 0;
}
/*
* Get the current user defined part of the display.
*/
static int
gen_get_var(struct fb_var_screeninfo *var, int con, struct fb_info *info)
{
*var = info->var;
return 0;
}
static struct fb_ops cyber2000fb_ops = {
owner: THIS_MODULE,
fb_set_var: cyber2000fb_set_var,
fb_set_cmap: cyber2000fb_set_cmap,
fb_pan_display: cyber2000fb_pan_display,
fb_get_fix: gen_get_fix,
fb_get_var: gen_get_var,
fb_get_cmap: gen_get_cmap,
};
/*
* Enable access to the extended registers
*/
static void cyber2000fb_enable_extregs(struct cfb_info *cfb)
{
cfb->func_use_count += 1;
if (cfb->func_use_count == 1) {
int old;
old = cyber2000_grphr(FUNC_CTL, cfb);
cyber2000_grphw(FUNC_CTL, old | FUNC_CTL_EXTREGENBL, cfb);
}
}
/*
* Disable access to the extended registers
*/
static void cyber2000fb_disable_extregs(struct cfb_info *cfb)
{
if (cfb->func_use_count == 1) {
int old;
old = cyber2000_grphr(FUNC_CTL, cfb);
cyber2000_grphw(FUNC_CTL, old & ~FUNC_CTL_EXTREGENBL, cfb);
}
cfb->func_use_count -= 1;
}
/*
* This is the only "static" reference to the internal data structures
* of this driver. It is here solely at the moment to support the other
* CyberPro modules external to this driver.
*/
static struct cfb_info *int_cfb_info;
/*
* Attach a capture/tv driver to the core CyberX0X0 driver.
*/
int cyber2000fb_attach(struct cyberpro_info *info, int idx)
{
if (int_cfb_info != NULL) {
info->dev = int_cfb_info->dev;
info->regs = int_cfb_info->regs;
info->fb = int_cfb_info->fb.screen_base;
info->fb_size = int_cfb_info->fb.fix.smem_len;
info->enable_extregs = cyber2000fb_enable_extregs;
info->disable_extregs = cyber2000fb_disable_extregs;
info->info = int_cfb_info;
strncpy(info->dev_name, int_cfb_info->fb.fix.id, sizeof(info->dev_name));
MOD_INC_USE_COUNT;
}
return int_cfb_info != NULL;
}
/*
* Detach a capture/tv driver from the core CyberX0X0 driver.
*/
void cyber2000fb_detach(int idx)
{
MOD_DEC_USE_COUNT;
}
EXPORT_SYMBOL(cyber2000fb_attach);
EXPORT_SYMBOL(cyber2000fb_detach);
/*
* These parameters give
* 640x480, hsync 31.5kHz, vsync 60Hz
*/
static struct fb_videomode __devinitdata cyber2000fb_default_mode = {
refresh: 60,
xres: 640,
yres: 480,
pixclock: 39722,
left_margin: 56,
right_margin: 16,
upper_margin: 34,
lower_margin: 9,
hsync_len: 88,
vsync_len: 2,
sync: FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
vmode: FB_VMODE_NONINTERLACED
};
static char igs_regs[] __devinitdata = {
0x12, 0x00, 0x13, 0x00,
0x16, 0x00,
0x31, 0x00, 0x32, 0x00,
0x50, 0x00, 0x51, 0x00, 0x52, 0x00, 0x53, 0x00,
0x54, 0x00, 0x55, 0x00, 0x56, 0x00, 0x57, 0x01,
0x58, 0x00, 0x59, 0x00, 0x5a, 0x00,
0x70, 0x0b, 0x73, 0x30,
0x74, 0x0b, 0x75, 0x17, 0x76, 0x00, 0x7a, 0xc8
};
/*
* We need to wake up the CyberPro, and make sure its in linear memory
* mode. Unfortunately, this is specific to the platform and card that
* we are running on.
*
* On x86 and ARM, should we be initialising the CyberPro first via the
* IO registers, and then the MMIO registers to catch all cases? Can we
* end up in the situation where the chip is in MMIO mode, but not awake
* on an x86 system?
*
* Note that on the NetWinder, the firmware automatically detects the
* type, width and size, and leaves this in extended registers 0x71 and
* 0x72 for us.
*/
static inline void cyberpro_init_hw(struct cfb_info *cfb, int at_boot)
{
int i;
/*
* Wake up the CyberPro.
*/
#ifdef __sparc__
#ifdef __sparc_v9__
#error "You loose, consult DaveM."
#else
/*
* SPARC does not have an "outb" instruction, so we generate
* I/O cycles storing into a reserved memory space at
* physical address 0x3000000
*/
{
unsigned char *iop;
iop = ioremap(0x3000000, 0x5000);
if (iop == NULL) {
prom_printf("iga5000: cannot map I/O\n");
return -ENOMEM;
}
writeb(0x18, iop + 0x46e8);
writeb(0x01, iop + 0x102);
writeb(0x08, iop + 0x46e8);
writeb(0x33, iop + 0x3ce);
writeb(0x01, iop + 0x3cf);
iounmap((void *)iop);
}
#endif
if (at_boot) {
/*
* Use mclk from BIOS. Only read this if we're
* initialising this card for the first time.
* FIXME: what about hotplug?
*/
cfb->mclk_mult = cyber2000_grphr(MCLK_MULT, cfb);
cfb->mclk_div = cyber2000_grphr(MCLK_DIV, cfb);
}
#endif
#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
/*
* x86 and MIPS are simple, we just do regular
* outb's instead of cyber2000fb_writeb.
*/
outb(0x18, 0x46e8);
outb(0x01, 0x102);
outb(0x08, 0x46e8);
outb(0x33, 0x3ce);
outb(0x01, 0x3cf);
if (at_boot) {
/*
* Use mclk from BIOS. Only read this if we're
* initialising this card for the first time.
* FIXME: what about hotplug?
*/
cfb->mclk_mult = cyber2000_grphr(MCLK_MULT, cfb);
cfb->mclk_div = cyber2000_grphr(MCLK_DIV, cfb);
}
#endif
#ifdef __arm__
cyber2000fb_writeb(0x18, 0x46e8, cfb);
cyber2000fb_writeb(0x01, 0x102, cfb);
cyber2000fb_writeb(0x08, 0x46e8, cfb);
cyber2000fb_writeb(0x33, 0x3ce, cfb);
cyber2000fb_writeb(0x01, 0x3cf, cfb);
/*
* MCLK on the NetWinder and the Shark is fixed at 75MHz
*/
cfb->mclk_mult = 0xdb;
cfb->mclk_div = 0x54;
#endif
/*
* Initialise the CyberPro
*/
for (i = 0; i < sizeof(igs_regs); i += 2)
cyber2000_grphw(igs_regs[i], igs_regs[i+1], cfb);
if (at_boot) {
/*
* get the video RAM size and width from the VGA register.
* This should have been already initialised by the BIOS,
* but if it's garbage, claim default 1MB VRAM (woody)
*/
cfb->mem_ctl1 = cyber2000_grphr(MEM_CTL1, cfb);
cfb->mem_ctl2 = cyber2000_grphr(MEM_CTL2, cfb);
} else {
/*
* Reprogram the MEM_CTL1 and MEM_CTL2 registers
*/
cyber2000_grphw(MEM_CTL1, cfb->mem_ctl1, cfb);
cyber2000_grphw(MEM_CTL2, cfb->mem_ctl2, cfb);
}
/*
* Ensure thatwe are using the correct PLL.
* (CyberPro 5000's may be programmed to use
* an additional set of PLLs.
*/
cyber2000fb_writeb(0xba, 0x3ce, cfb);
cyber2000fb_writeb(cyber2000fb_readb(0x3cf, cfb) & 0x80, 0x3cf, cfb);
}
static struct cfb_info * __devinit
cyberpro_alloc_fb_info(struct pci_dev *dev, const struct pci_device_id *id, char *name)
{
struct cfb_info *cfb;
cfb = kmalloc(sizeof(struct cfb_info) + sizeof(struct display) +
sizeof(u32) * 16, GFP_KERNEL);
if (!cfb)
return NULL;
memset(cfb, 0, sizeof(struct cfb_info) + sizeof(struct display));
cfb->currcon = -1;
cfb->dev = dev;
if (id->driver_data == FB_ACCEL_IGS_CYBER5000)
cfb->ref_ps = 40690; // 24.576 MHz
else
cfb->ref_ps = 69842; // 14.31818 MHz (69841?)
cfb->divisors[0] = 1;
cfb->divisors[1] = 2;
cfb->divisors[2] = 4;
if (id->driver_data == FB_ACCEL_IGS_CYBER2000)
cfb->divisors[3] = 8;
else
cfb->divisors[3] = 6;
strcpy(cfb->fb.fix.id, name);
cfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
cfb->fb.fix.type_aux = 0;
cfb->fb.fix.xpanstep = 0;
cfb->fb.fix.ypanstep = 1;
cfb->fb.fix.ywrapstep = 0;
cfb->fb.fix.accel = id->driver_data;
cfb->fb.var.nonstd = 0;
cfb->fb.var.activate = FB_ACTIVATE_NOW;
cfb->fb.var.height = -1;
cfb->fb.var.width = -1;
cfb->fb.var.accel_flags = FB_ACCELF_TEXT;
strcpy(cfb->fb.modename, cfb->fb.fix.id);
strcpy(cfb->fb.fontname, default_font);
cfb->fb.fbops = &cyber2000fb_ops;
cfb->fb.changevar = NULL;
cfb->fb.switch_con = cyber2000fb_switch;
cfb->fb.updatevar = cyber2000fb_updatevar;
cfb->fb.blank = cyber2000fb_blank;
cfb->fb.flags = FBINFO_FLAG_DEFAULT;
cfb->fb.disp = (struct display *)(cfb + 1);
cfb->fb.pseudo_palette = (void *)(cfb->fb.disp + 1);
fb_alloc_cmap(&cfb->fb.cmap, NR_PALETTE, 0);
return cfb;
}
static void __devinit
cyberpro_free_fb_info(struct cfb_info *cfb)
{
if (cfb) {
/*
* Free the colourmap
*/
fb_alloc_cmap(&cfb->fb.cmap, 0, 0);
kfree(cfb);
}
}
/*
* Parse Cyber2000fb options. Usage:
* video=cyber2000:font:fontname
*/
int
cyber2000fb_setup(char *options)
{
char *opt;
if (!options || !*options)
return 0;
while ((opt = strsep(&options, ",")) != NULL) {
if (!*opt)
continue;
if (strncmp(opt, "font:", 5) == 0) {
strncpy(default_font_storage, opt + 5, sizeof(default_font_storage));
default_font = default_font_storage;
continue;
}
printk(KERN_ERR "CyberPro20x0: unknown parameter: %s\n", opt);
}
return 0;
}
static int __devinit
cyberpro_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
struct cfb_info *cfb;
u_int h_sync, v_sync;
u_long smem_size;
char name[16];
int err;
sprintf(name, "CyberPro%4X", id->device);
err = pci_enable_device(dev);
if (err)
return err;
err = pci_request_regions(dev, name);
if (err)
return err;
err = -ENOMEM;
cfb = cyberpro_alloc_fb_info(dev, id, name);
if (!cfb)
goto failed_release;
cfb->region = ioremap(pci_resource_start(dev, 0),
pci_resource_len(dev, 0));
if (!cfb->region)
goto failed_ioremap;
cfb->regs = cfb->region + MMIO_OFFSET;
cyberpro_init_hw(cfb, 1);
switch (cfb->mem_ctl2 & MEM_CTL2_SIZE_MASK) {
case MEM_CTL2_SIZE_4MB: smem_size = 0x00400000; break;
case MEM_CTL2_SIZE_2MB: smem_size = 0x00200000; break;
default: smem_size = 0x00100000; break;
}
/*
* Hmm, we _need_ a portable way of finding the address for
* the remap stuff, both for mmio and for smem.
*/
cfb->fb.fix.mmio_start = pci_resource_start(dev, 0) + MMIO_OFFSET;
cfb->fb.fix.smem_start = pci_resource_start(dev, 0);
cfb->fb.fix.mmio_len = MMIO_SIZE;
cfb->fb.fix.smem_len = smem_size;
cfb->fb.screen_base = cfb->region;
if (!fb_find_mode(&cfb->fb.var, &cfb->fb, NULL, NULL, 0,
&cyber2000fb_default_mode, 8)) {
printk("%s: no valid mode found\n", cfb->fb.fix.id);
goto failed;
}
cfb->fb.var.yres_virtual = cfb->fb.fix.smem_len * 8 /
(cfb->fb.var.bits_per_pixel * cfb->fb.var.xres_virtual);
if (cfb->fb.var.yres_virtual < cfb->fb.var.yres)
cfb->fb.var.yres_virtual = cfb->fb.var.yres;
cyber2000fb_set_var(&cfb->fb.var, -1, &cfb->fb);
/*
* Calculate the hsync and vsync frequencies. Note that
* we split the 1e12 constant up so that we can preserve
* the precision and fit the results into 32-bit registers.
* (1953125000 * 512 = 1e12)
*/
h_sync = 1953125000 / cfb->fb.var.pixclock;
h_sync = h_sync * 512 / (cfb->fb.var.xres + cfb->fb.var.left_margin +
cfb->fb.var.right_margin + cfb->fb.var.hsync_len);
v_sync = h_sync / (cfb->fb.var.yres + cfb->fb.var.upper_margin +
cfb->fb.var.lower_margin + cfb->fb.var.vsync_len);
printk(KERN_INFO "%s: %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
cfb->fb.fix.id, cfb->fb.fix.smem_len >> 10,
cfb->fb.var.xres, cfb->fb.var.yres,
h_sync / 1000, h_sync % 1000, v_sync);
err = register_framebuffer(&cfb->fb);
if (err < 0)
goto failed;
/*
* Our driver data
*/
pci_set_drvdata(dev, cfb);
if (int_cfb_info == NULL)
int_cfb_info = cfb;
return 0;
failed:
iounmap(cfb->region);
failed_ioremap:
cyberpro_free_fb_info(cfb);
failed_release:
pci_release_regions(dev);
return err;
}
static void __devexit cyberpro_remove(struct pci_dev *dev)
{
struct cfb_info *cfb = pci_get_drvdata(dev);
if (cfb) {
/*
* If unregister_framebuffer fails, then
* we will be leaving hooks that could cause
* oopsen laying around.
*/
if (unregister_framebuffer(&cfb->fb))
printk(KERN_WARNING "%s: danger Will Robinson, "
"danger danger! Oopsen imminent!\n",
cfb->fb.fix.id);
iounmap(cfb->region);
cyberpro_free_fb_info(cfb);
/*
* Ensure that the driver data is no longer
* valid.
*/
pci_set_drvdata(dev, NULL);
if (cfb == int_cfb_info)
int_cfb_info = NULL;
pci_release_regions(dev);
}
}
static int cyberpro_suspend(struct pci_dev *dev, u32 state)
{
return 0;
}
/*
* Re-initialise the CyberPro hardware
*/
static int cyberpro_resume(struct pci_dev *dev)
{
struct cfb_info *cfb = pci_get_drvdata(dev);
if (cfb) {
cyberpro_init_hw(cfb, 0);
/*
* Restore the old video mode and the palette.
* We also need to tell fbcon to redraw the console.
*/
cfb->fb.var.activate = FB_ACTIVATE_NOW;
cyber2000fb_set_var(&cfb->fb.var, -1, &cfb->fb);
}
return 0;
}
static struct pci_device_id cyberpro_pci_table[] __devinitdata = {
{ PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_2000,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_IGS_CYBER2000 },
{ PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_2010,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_IGS_CYBER2010 },
{ PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_5000,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_IGS_CYBER5000 },
{ 0, }
};
static struct pci_driver cyberpro_driver = {
name: "CyberPro",
probe: cyberpro_probe,
remove: __devexit_p(cyberpro_remove),
suspend: cyberpro_suspend,
resume: cyberpro_resume,
id_table: cyberpro_pci_table
};
/*
* I don't think we can use the "module_init" stuff here because
* the fbcon stuff may not be initialised yet. Hence the #ifdef
* around module_init.
*/
int __init cyber2000fb_init(void)
{
return pci_module_init(&cyberpro_driver);
}
static void __exit cyberpro_exit(void)
{
pci_unregister_driver(&cyberpro_driver);
}
#ifdef MODULE
module_init(cyber2000fb_init);
#endif
module_exit(cyberpro_exit);
MODULE_AUTHOR("Russell King");
MODULE_DESCRIPTION("CyberPro 2000, 2010 and 5000 framebuffer driver");
MODULE_DEVICE_TABLE(pci,cyberpro_pci_table);
MODULE_LICENSE("GPL");