text: // 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/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->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 &= 0xffff;
  	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 & 0xFF000000);
  	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_check_var	= lxfb_check_var,
  	.fb_set_par	= lxfb_set_par,
  	.fb_setcolreg	= lxfb_setcolreg,
  	.fb_blank       = lxfb_blank,
  	/* No HW acceleration for now. */
  	.fb_fillrect	= cfb_fillrect,
  	.fb_copyarea	= cfb_copyarea,
  	.fb_imageblit	= cfb_imageblit,
  };
  
  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->flags		= FBINFO_DEFAULT;
  	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;
  
  	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;
  
  	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");
  