// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Geode LX framebuffer driver.
*
* Copyright (C) 2007 Advanced Micro Devices, Inc.
* Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
*/
#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/console.h>
#include <linux/mm.h>
#include <linux/suspend.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/uaccess.h>
#include <asm /olpc.h>
#include "lxfb.h"
static char *mode_option;
static int noclear, nopanel, nocrt;
static int vram;
static int vt_switch;
/* Most of these modes are sorted in ascending order, but
* since the first entry in this table is the "default" mode,
* we try to make it something sane - 640x480-60 is sane
*/
static struct fb_videomode geode_modedb[] = {
/* 640x480-60 */
{ NULL, 60 , 640 , 480 , 39682 , 48 , 8 , 25 , 2 , 88 , 2 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 640x400-70 */
{ NULL, 70 , 640 , 400 , 39770 , 40 , 8 , 28 , 5 , 96 , 2 ,
FB_SYNC_HOR_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 640x480-70 */
{ NULL, 70 , 640 , 480 , 35014 , 88 , 24 , 15 , 2 , 64 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 640x480-72 */
{ NULL, 72 , 640 , 480 , 32102 , 120 , 16 , 20 , 1 , 40 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 640x480-75 */
{ NULL, 75 , 640 , 480 , 31746 , 120 , 16 , 16 , 1 , 64 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 640x480-85 */
{ NULL, 85 , 640 , 480 , 27780 , 80 , 56 , 25 , 1 , 56 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 640x480-90 */
{ NULL, 90 , 640 , 480 , 26392 , 96 , 32 , 22 , 1 , 64 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 640x480-100 */
{ NULL, 100 , 640 , 480 , 23167 , 104 , 40 , 25 , 1 , 64 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 640x480-60 */
{ NULL, 60 , 640 , 480 , 39682 , 48 , 16 , 25 , 10 , 88 , 2 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 800x600-56 */
{ NULL, 56 , 800 , 600 , 27901 , 128 , 24 , 22 , 1 , 72 , 2 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-60 */
{ NULL, 60 , 800 , 600 , 25131 , 72 , 32 , 23 , 1 , 136 , 4 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-70 */
{ NULL, 70 , 800 , 600 , 21873 , 120 , 40 , 21 , 4 , 80 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-72 */
{ NULL, 72 , 800 , 600 , 20052 , 64 , 56 , 23 , 37 , 120 , 6 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-75 */
{ NULL, 75 , 800 , 600 , 20202 , 160 , 16 , 21 , 1 , 80 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-85 */
{ NULL, 85 , 800 , 600 , 17790 , 152 , 32 , 27 , 1 , 64 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-90 */
{ NULL, 90 , 800 , 600 , 16648 , 128 , 40 , 28 , 1 , 88 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-100 */
{ NULL, 100 , 800 , 600 , 14667 , 136 , 48 , 27 , 1 , 88 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 800x600-60 */
{ NULL, 60 , 800 , 600 , 25131 , 88 , 40 , 23 , 1 , 128 , 4 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-60 */
{ NULL, 60 , 1024 , 768 , 15385 , 160 , 24 , 29 , 3 , 136 , 6 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-70 */
{ NULL, 70 , 1024 , 768 , 13346 , 144 , 24 , 29 , 3 , 136 , 6 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-72 */
{ NULL, 72 , 1024 , 768 , 12702 , 168 , 56 , 29 , 4 , 112 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-75 */
{ NULL, 75 , 1024 , 768 , 12703 , 176 , 16 , 28 , 1 , 96 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-85 */
{ NULL, 85 , 1024 , 768 , 10581 , 208 , 48 , 36 , 1 , 96 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-90 */
{ NULL, 90 , 1024 , 768 , 9981 , 176 , 64 , 37 , 1 , 112 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-100 */
{ NULL, 100 , 1024 , 768 , 8825 , 184 , 72 , 42 , 1 , 112 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1024x768-60 */
{ NULL, 60 , 1024 , 768 , 15385 , 160 , 24 , 29 , 3 , 136 , 6 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-60 */
{ NULL, 60 , 1152 , 864 , 12251 , 184 , 64 , 27 , 1 , 120 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-70 */
{ NULL, 70 , 1152 , 864 , 10254 , 192 , 72 , 32 , 8 , 120 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-72 */
{ NULL, 72 , 1152 , 864 , 9866 , 200 , 72 , 33 , 7 , 128 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-75 */
{ NULL, 75 , 1152 , 864 , 9259 , 256 , 64 , 32 , 1 , 128 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-85 */
{ NULL, 85 , 1152 , 864 , 8357 , 200 , 72 , 37 , 3 , 128 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-90 */
{ NULL, 90 , 1152 , 864 , 7719 , 208 , 80 , 42 , 9 , 128 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-100 */
{ NULL, 100 , 1152 , 864 , 6947 , 208 , 80 , 48 , 3 , 128 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1152x864-60 */
{ NULL, 60 , 1152 , 864 , 12251 , 184 , 64 , 27 , 1 , 120 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-60 */
{ NULL, 60 , 1280 , 1024 , 9262 , 248 , 48 , 38 , 1 , 112 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-70 */
{ NULL, 70 , 1280 , 1024 , 7719 , 224 , 88 , 38 , 6 , 136 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-72 */
{ NULL, 72 , 1280 , 1024 , 7490 , 224 , 88 , 39 , 7 , 136 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-75 */
{ NULL, 75 , 1280 , 1024 , 7409 , 248 , 16 , 38 , 1 , 144 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-85 */
{ NULL, 85 , 1280 , 1024 , 6351 , 224 , 64 , 44 , 1 , 160 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-90 */
{ NULL, 90 , 1280 , 1024 , 5791 , 240 , 96 , 51 , 12 , 144 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-100 */
{ NULL, 100 , 1280 , 1024 , 5212 , 240 , 96 , 57 , 6 , 144 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1280x1024-60 */
{ NULL, 60 , 1280 , 1024 , 9262 , 248 , 48 , 38 , 1 , 112 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-60 */
{ NULL, 60 , 1600 , 1200 , 6172 , 304 , 64 , 46 , 1 , 192 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-70 */
{ NULL, 70 , 1600 , 1200 , 5291 , 304 , 64 , 46 , 1 , 192 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-72 */
{ NULL, 72 , 1600 , 1200 , 5053 , 288 , 112 , 47 , 13 , 176 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-75 */
{ NULL, 75 , 1600 , 1200 , 4938 , 304 , 64 , 46 , 1 , 192 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-85 */
{ NULL, 85 , 1600 , 1200 , 4357 , 304 , 64 , 46 , 1 , 192 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-90 */
{ NULL, 90 , 1600 , 1200 , 3981 , 304 , 128 , 60 , 1 , 176 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-100 */
{ NULL, 100 , 1600 , 1200 , 3563 , 304 , 128 , 67 , 1 , 176 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1600x1200-60 */
{ NULL, 60 , 1600 , 1200 , 6172 , 304 , 64 , 46 , 1 , 192 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 },
/* 1920x1440-60 */
{ NULL, 60 , 1920 , 1440 , 4273 , 344 , 128 , 56 , 1 , 208 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1920x1440-70 */
{ NULL, 70 , 1920 , 1440 , 3593 , 360 , 152 , 55 , 8 , 208 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1920x1440-72 */
{ NULL, 72 , 1920 , 1440 , 3472 , 360 , 152 , 68 , 4 , 208 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1920x1440-75 */
{ NULL, 75 , 1920 , 1440 , 3367 , 352 , 144 , 56 , 1 , 224 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
/* 1920x1440-85 */
{ NULL, 85 , 1920 , 1440 , 2929 , 368 , 152 , 68 , 1 , 216 , 3 ,
0 , FB_VMODE_NONINTERLACED, 0 },
};
static struct fb_videomode olpc_dcon_modedb[] = {
/* The only mode the DCON has is 1200x900 */
{ NULL, 50 , 1200 , 900 , 17460 , 24 , 8 , 4 , 5 , 8 , 3 ,
FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED, 0 }
};
static void get_modedb(struct fb_videomode **modedb, unsigned int *size)
{
if (olpc_has_dcon()) {
*modedb = (struct fb_videomode *) olpc_dcon_modedb;
*size = ARRAY_SIZE(olpc_dcon_modedb);
} else {
*modedb = (struct fb_videomode *) geode_modedb;
*size = ARRAY_SIZE(geode_modedb);
}
}
static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
if (!var->pixclock)
return -EINVAL;
if (var->xres > 1920 || var->yres > 1440 )
return -EINVAL;
if (var->bits_per_pixel == 32 ) {
var->red.offset = 16 ; var->red.length = 8 ;
var->green.offset = 8 ; var->green.length = 8 ;
var->blue.offset = 0 ; var->blue.length = 8 ;
} else if (var->bits_per_pixel == 16 ) {
var->red.offset = 11 ; var->red.length = 5 ;
var->green.offset = 5 ; var->green.length = 6 ;
var->blue.offset = 0 ; var->blue.length = 5 ;
} else if (var->bits_per_pixel == 8 ) {
var->red.offset = 0 ; var->red.length = 8 ;
var->green.offset = 0 ; var->green.length = 8 ;
var->blue.offset = 0 ; var->blue.length = 8 ;
} else
return -EINVAL;
var->transp.offset = 0 ; var->transp.length = 0 ;
/* Enough video memory? */
if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres)
> info->fix.smem_len)
return -EINVAL;
return 0 ;
}
static int lxfb_set_par(struct fb_info *info)
{
if (info->var.bits_per_pixel > 8 )
info->fix.visual = FB_VISUAL_TRUECOLOR;
else
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
info->fix.line_length = lx_get_pitch(info->var.xres,
info->var.bits_per_pixel);
lx_set_mode(info);
return 0 ;
}
static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
{
chan &= 0 xffff;
chan >>= 16 - bf->length;
return chan << bf->offset;
}
static int lxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *info)
{
if (info->var.grayscale) {
/* grayscale = 0.30*R + 0.59*G + 0.11*B */
red = green = blue = (red * 77 + green * 151 + blue * 28 ) >> 8 ;
}
/* Truecolor has hardware independent palette */
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
u32 *pal = info->pseudo_palette;
u32 v;
if (regno >= 16 )
return -EINVAL;
v = chan_to_field(red, &info->var.red);
v |= chan_to_field(green, &info->var.green);
v |= chan_to_field(blue, &info->var.blue);
pal[regno] = v;
} else {
if (regno >= 256 )
return -EINVAL;
lx_set_palette_reg(info, regno, red, green, blue);
}
return 0 ;
}
static int lxfb_blank(int blank_mode, struct fb_info *info)
{
return lx_blank_display(info, blank_mode);
}
static int lxfb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
{
struct lxfb_par *par = info->par;
int ret;
ret = pci_enable_device(dev);
if (ret)
return ret;
ret = pci_request_region(dev, 0 , "lxfb-framebuffer" );
if (ret)
return ret;
ret = pci_request_region(dev, 1 , "lxfb-gp" );
if (ret)
return ret;
ret = pci_request_region(dev, 2 , "lxfb-vg" );
if (ret)
return ret;
ret = pci_request_region(dev, 3 , "lxfb-vp" );
if (ret)
return ret;
info->fix.smem_start = pci_resource_start(dev, 0 );
info->fix.smem_len = vram ? vram : lx_framebuffer_size();
info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
ret = -ENOMEM;
if (info->screen_base == NULL)
return ret;
par->gp_regs = pci_ioremap_bar(dev, 1 );
if (par->gp_regs == NULL)
return ret;
par->dc_regs = pci_ioremap_bar(dev, 2 );
if (par->dc_regs == NULL)
return ret;
par->vp_regs = pci_ioremap_bar(dev, 3 );
if (par->vp_regs == NULL)
return ret;
write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
write_dc(par, DC_GLIU0_MEM_OFFSET, info->fix.smem_start & 0 xFF000000);
write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n" ,
info->fix.smem_len / 1024 , info->fix.smem_start);
return 0 ;
}
static const struct fb_ops lxfb_ops = {
.owner = THIS_MODULE,
FB_DEFAULT_IOMEM_OPS,
.fb_check_var = lxfb_check_var,
.fb_set_par = lxfb_set_par,
.fb_setcolreg = lxfb_setcolreg,
.fb_blank = lxfb_blank,
};
static struct fb_info *lxfb_init_fbinfo(struct device *dev)
{
struct lxfb_par *par;
struct fb_info *info;
/* Alloc enough space for the pseudo palette. */
info = framebuffer_alloc(sizeof (struct lxfb_par) + sizeof (u32) * 16 ,
dev);
if (!info)
return NULL;
par = info->par;
strcpy(info->fix.id, "Geode LX" );
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.type_aux = 0 ;
info->fix.xpanstep = 0 ;
info->fix.ypanstep = 0 ;
info->fix.ywrapstep = 0 ;
info->fix.accel = FB_ACCEL_NONE;
info->var.nonstd = 0 ;
info->var.activate = FB_ACTIVATE_NOW;
info->var.height = -1 ;
info->var.width = -1 ;
info->var.accel_flags = 0 ;
info->var.vmode = FB_VMODE_NONINTERLACED;
info->fbops = &lxfb_ops;
info->node = -1 ;
info->pseudo_palette = (void *)par + sizeof (struct lxfb_par);
if (fb_alloc_cmap(&info->cmap, 256 , 0 ) < 0 ) {
framebuffer_release(info);
return NULL;
}
info->var.grayscale = 0 ;
return info;
}
static int __maybe_unused lxfb_suspend(struct device *dev)
{
struct fb_info *info = dev_get_drvdata(dev);
console_lock();
lx_powerdown(info);
fb_set_suspend(info, 1 );
console_unlock();
/* there's no point in setting PCI states; we emulate PCI, so
* we don't end up getting power savings anyways */
return 0 ;
}
static int __maybe_unused lxfb_resume(struct device *dev)
{
struct fb_info *info = dev_get_drvdata(dev);
int ret;
console_lock();
ret = lx_powerup(info);
if (ret) {
printk(KERN_ERR "lxfb: power up failed!\n" );
return ret;
}
fb_set_suspend(info, 0 );
console_unlock();
return 0 ;
}
static int lxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct lxfb_par *par;
struct fb_info *info;
int ret;
struct fb_videomode *modedb_ptr;
unsigned int modedb_size;
ret = aperture_remove_conflicting_pci_devices(pdev, "lxfb" );
if (ret)
return ret;
info = lxfb_init_fbinfo(&pdev->dev);
if (info == NULL)
return -ENOMEM;
par = info->par;
ret = lxfb_map_video_memory(info, pdev);
if (ret < 0 ) {
dev_err(&pdev->dev,
"failed to map frame buffer or controller registers\n" );
goto err;
}
/* Set up the desired outputs */
par->output = 0 ;
par->output |= (nopanel) ? 0 : OUTPUT_PANEL;
par->output |= (nocrt) ? 0 : OUTPUT_CRT;
/* Set up the mode database */
get_modedb(&modedb_ptr, &modedb_size);
ret = fb_find_mode(&info->var, info, mode_option,
modedb_ptr, modedb_size, NULL, 16 );
if (ret == 0 || ret == 4 ) {
dev_err(&pdev->dev, "could not find valid video mode\n" );
ret = -EINVAL;
goto err;
}
/* Clear the screen of garbage, unless noclear was specified,
* in which case we assume the user knows what he is doing */
if (!noclear)
memset_io(info->screen_base, 0 , info->fix.smem_len);
/* Set the mode */
lxfb_check_var(&info->var, info);
lxfb_set_par(info);
pm_set_vt_switch(vt_switch);
if (register_framebuffer(info) < 0 ) {
ret = -EINVAL;
goto err;
}
pci_set_drvdata(pdev, info);
fb_info(info, "%s frame buffer device\n" , info->fix.id);
return 0 ;
err:
if (info->screen_base) {
iounmap(info->screen_base);
pci_release_region(pdev, 0 );
}
if (par->gp_regs) {
iounmap(par->gp_regs);
pci_release_region(pdev, 1 );
}
if (par->dc_regs) {
iounmap(par->dc_regs);
pci_release_region(pdev, 2 );
}
if (par->vp_regs) {
iounmap(par->vp_regs);
pci_release_region(pdev, 3 );
}
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
return ret;
}
static void lxfb_remove(struct pci_dev *pdev)
{
struct fb_info *info = pci_get_drvdata(pdev);
struct lxfb_par *par = info->par;
unregister_framebuffer(info);
iounmap(info->screen_base);
pci_release_region(pdev, 0 );
iounmap(par->gp_regs);
pci_release_region(pdev, 1 );
iounmap(par->dc_regs);
pci_release_region(pdev, 2 );
iounmap(par->vp_regs);
pci_release_region(pdev, 3 );
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
static struct pci_device_id lxfb_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
{ 0 , }
};
MODULE_DEVICE_TABLE(pci, lxfb_id_table);
static const struct dev_pm_ops lxfb_pm_ops = {
#ifdef CONFIG_PM_SLEEP
.suspend = lxfb_suspend,
.resume = lxfb_resume,
.freeze = NULL,
.thaw = lxfb_resume,
.poweroff = NULL,
.restore = lxfb_resume,
#endif
};
static struct pci_driver lxfb_driver = {
.name = "lxfb" ,
.id_table = lxfb_id_table,
.probe = lxfb_probe,
.remove = lxfb_remove,
.driver.pm = &lxfb_pm_ops,
};
#ifndef MODULE
static int __init lxfb_setup(char *options)
{
char *opt;
if (!options || !*options)
return 0 ;
while ((opt = strsep(&options, "," )) != NULL) {
if (!*opt)
continue ;
if (!strcmp(opt, "noclear" ))
noclear = 1 ;
else if (!strcmp(opt, "nopanel" ))
nopanel = 1 ;
else if (!strcmp(opt, "nocrt" ))
nocrt = 1 ;
else
mode_option = opt;
}
return 0 ;
}
#endif
static int __init lxfb_init(void )
{
#ifndef MODULE
char *option = NULL;
#endif
if (fb_modesetting_disabled("lxfb" ))
return -ENODEV;
#ifndef MODULE
if (fb_get_options("lxfb" , &option))
return -ENODEV;
lxfb_setup(option);
#endif
return pci_register_driver(&lxfb_driver);
}
static void __exit lxfb_cleanup(void )
{
pci_unregister_driver(&lxfb_driver);
}
module_init(lxfb_init);
module_exit(lxfb_cleanup);
module_param(mode_option, charp, 0 );
MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])" );
module_param(vram, int , 0 );
MODULE_PARM_DESC(vram, "video memory size" );
module_param(vt_switch, int , 0 );
MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume" );
MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX" );
MODULE_LICENSE("GPL" );
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