[mirror_ubuntu-bionic-kernel.git] / drivers / video / geode / lxfb_core.c

/*
 * Geode LX framebuffer driver.
 *
 * Copyright (C) 2007 Advanced Micro Devices, Inc.
 * Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 */

#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 "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[] __initdata = {
	/* 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 },
};

#ifdef CONFIG_OLPC
#include <asm/olpc.h>

static struct fb_videomode olpc_dcon_modedb[] __initdata = {
	/* 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 __init 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);
	}
}

#else
static void __init get_modedb(struct fb_videomode **modedb, unsigned int *size)
{
	*modedb = (struct fb_videomode *) geode_modedb;
	*size = ARRAY_SIZE(geode_modedb);
}
#endif

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 __init 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 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 * __init 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;
}

#ifdef CONFIG_PM
static int lxfb_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct fb_info *info = pci_get_drvdata(pdev);

	if (state.event == PM_EVENT_SUSPEND) {
		acquire_console_sem();
		lx_powerdown(info);
		fb_set_suspend(info, 1);
		release_console_sem();
	}

	/* 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 lxfb_resume(struct pci_dev *pdev)
{
	struct fb_info *info = pci_get_drvdata(pdev);
	int ret;

	acquire_console_sem();
	ret = lx_powerup(info);
	if (ret) {
		printk(KERN_ERR "lxfb:  power up failed!\n");
		return ret;
	}

	fb_set_suspend(info, 0);
	release_console_sem();
	return 0;
}
#else
#define lxfb_suspend NULL
#define lxfb_resume NULL
#endif

static int __init 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);
	printk(KERN_INFO "fb%d: %s frame buffer device\n",
		info->node, 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);
	}

	if (info) {
		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);
	pci_set_drvdata(pdev, NULL);
	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 struct pci_driver lxfb_driver = {
	.name		= "lxfb",
	.id_table	= lxfb_id_table,
	.probe		= lxfb_probe,
	.remove		= lxfb_remove,
	.suspend	= lxfb_suspend,
	.resume		= lxfb_resume,
};

#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");
Commit	Line	Data
3968cb49 JC	1	/*
	2	* Geode LX framebuffer driver.
	3	*
	4	* Copyright (C) 2007 Advanced Micro Devices, Inc.
	5	* Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/kernel.h>
	15	#include <linux/errno.h>
	16	#include <linux/string.h>
	17	#include <linux/console.h>
	18	#include <linux/mm.h>
564820d4	19	#include <linux/suspend.h>
3968cb49 JC	20	#include <linux/delay.h>
	21	#include <linux/fb.h>
	22	#include <linux/init.h>
	23	#include <linux/pci.h>
	24	#include <linux/uaccess.h>
	25
	26	#include "lxfb.h"
	27
	28	static char *mode_option;
	29	static int noclear, nopanel, nocrt;
c805df3d	30	static int vram;
564820d4	31	static int vt_switch;
3968cb49 JC	32
	33	/* Most of these modes are sorted in ascending order, but
	34	* since the first entry in this table is the "default" mode,
	35	* we try to make it something sane - 640x480-60 is sane
	36	*/
	37
3553a2fa	38	static struct fb_videomode geode_modedb[] __initdata = {
3968cb49 JC	39	/* 640x480-60 */
	40	{ NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,
	41	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	42	FB_VMODE_NONINTERLACED, 0 },
	43	/* 640x400-70 */
	44	{ NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2,
	45	FB_SYNC_HOR_HIGH_ACT,
	46	FB_VMODE_NONINTERLACED, 0 },
	47	/* 640x480-70 */
	48	{ NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3,
	49	0, FB_VMODE_NONINTERLACED, 0 },
	50	/* 640x480-72 */
	51	{ NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3,
	52	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	53	FB_VMODE_NONINTERLACED, 0 },
	54	/* 640x480-75 */
	55	{ NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
	56	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	57	FB_VMODE_NONINTERLACED, 0 },
	58	/* 640x480-85 */
	59	{ NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3,
	60	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	61	FB_VMODE_NONINTERLACED, 0 },
	62	/* 640x480-90 */
	63	{ NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3,
	64	0, FB_VMODE_NONINTERLACED, 0 },
	65	/* 640x480-100 */
	66	{ NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3,
	67	0, FB_VMODE_NONINTERLACED, 0 },
	68	/* 640x480-60 */
	69	{ NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2,
	70	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	71	FB_VMODE_NONINTERLACED, 0 },
	72	/* 800x600-56 */
	73	{ NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2,
	74	0, FB_VMODE_NONINTERLACED, 0 },
	75	/* 800x600-60 */
	76	{ NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4,
	77	0, FB_VMODE_NONINTERLACED, 0 },
	78	/* 800x600-70 */
	79	{ NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3,
	80	0, FB_VMODE_NONINTERLACED, 0 },
	81	/* 800x600-72 */
	82	{ NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6,
	83	0, FB_VMODE_NONINTERLACED, 0 },
	84	/* 800x600-75 */
	85	{ NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3,
	86	0, FB_VMODE_NONINTERLACED, 0 },
	87	/* 800x600-85 */
	88	{ NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3,
	89	0, FB_VMODE_NONINTERLACED, 0 },
	90	/* 800x600-90 */
	91	{ NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3,
	92	0, FB_VMODE_NONINTERLACED, 0 },
	93	/* 800x600-100 */
	94	{ NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3,
	95	0, FB_VMODE_NONINTERLACED, 0 },
	96	/* 800x600-60 */
	97	{ NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4,
	98	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	99	FB_VMODE_NONINTERLACED, 0 },
	100	/* 1024x768-60 */
	101	{ NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
	102	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
103	FB_VMODE_NONINTERLACED, 0 },
104	/* 1024x768-70 */
105	{ NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6,
106	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
107	FB_VMODE_NONINTERLACED, 0 },
108	/* 1024x768-72 */
109	{ NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3,
110	0, FB_VMODE_NONINTERLACED, 0 },
111	/* 1024x768-75 */
112	{ NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3,
113	0, FB_VMODE_NONINTERLACED, 0 },
114	/* 1024x768-85 */
115	{ NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3,
116	0, FB_VMODE_NONINTERLACED, 0 },
117	/* 1024x768-90 */
118	{ NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3,
119	0, FB_VMODE_NONINTERLACED, 0 },
120	/* 1024x768-100 */
121	{ NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3,
122	0, FB_VMODE_NONINTERLACED, 0 },
123	/* 1024x768-60 */
124	{ NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
125	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
126	FB_VMODE_NONINTERLACED, 0 },
127	/* 1152x864-60 */
128	{ NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
129	0, FB_VMODE_NONINTERLACED, 0 },
130	/* 1152x864-70 */
131	{ NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3,
132	0, FB_VMODE_NONINTERLACED, 0 },
133	/* 1152x864-72 */
134	{ NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3,
135	0, FB_VMODE_NONINTERLACED, 0 },
136	/* 1152x864-75 */
137	{ NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
138	0, FB_VMODE_NONINTERLACED, 0 },
139	/* 1152x864-85 */
140	{ NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3,
141	0, FB_VMODE_NONINTERLACED, 0 },
142	/* 1152x864-90 */
143	{ NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3,
144	0, FB_VMODE_NONINTERLACED, 0 },
145	/* 1152x864-100 */
146	{ NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3,
147	0, FB_VMODE_NONINTERLACED, 0 },
148	/* 1152x864-60 */
149	{ NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
150	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
151	FB_VMODE_NONINTERLACED, 0 },
152	/* 1280x1024-60 */
153	{ NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
154	0, FB_VMODE_NONINTERLACED, 0 },
155	/* 1280x1024-70 */
156	{ NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3,
157	0, FB_VMODE_NONINTERLACED, 0 },
158	/* 1280x1024-72 */
159	{ NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3,
160	0, FB_VMODE_NONINTERLACED, 0 },
161	/* 1280x1024-75 */
162	{ NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3,
163	0, FB_VMODE_NONINTERLACED, 0 },
164	/* 1280x1024-85 */
165	{ NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3,
166	0, FB_VMODE_NONINTERLACED, 0 },
167	/* 1280x1024-90 */
168	{ NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3,
169	0, FB_VMODE_NONINTERLACED, 0 },
170	/* 1280x1024-100 */
171	{ NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3,
172	0, FB_VMODE_NONINTERLACED, 0 },
173	/* 1280x1024-60 */
174	{ NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
175	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
176	FB_VMODE_NONINTERLACED, 0 },
177	/* 1600x1200-60 */
178	{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
179	0, FB_VMODE_NONINTERLACED, 0 },
180	/* 1600x1200-70 */
181	{ NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
182	0, FB_VMODE_NONINTERLACED, 0 },
183	/* 1600x1200-72 */
184	{ NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3,
185	0, FB_VMODE_NONINTERLACED, 0 },
186	/* 1600x1200-75 */
187	{ NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
188	0, FB_VMODE_NONINTERLACED, 0 },
189	/* 1600x1200-85 */
190	{ NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
191	0, FB_VMODE_NONINTERLACED, 0 },
192	/* 1600x1200-90 */
193	{ NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3,
194	0, FB_VMODE_NONINTERLACED, 0 },
195	/* 1600x1200-100 */
196	{ NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3,
197	0, FB_VMODE_NONINTERLACED, 0 },
198	/* 1600x1200-60 */
199	{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
200	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
201	FB_VMODE_NONINTERLACED, 0 },
202	/* 1920x1440-60 */
203	{ NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3,
204	0, FB_VMODE_NONINTERLACED, 0 },
205	/* 1920x1440-70 */
206	{ NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3,
207	0, FB_VMODE_NONINTERLACED, 0 },
208	/* 1920x1440-72 */
209	{ NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3,
210	0, FB_VMODE_NONINTERLACED, 0 },
211	/* 1920x1440-75 */
212	{ NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
213	0, FB_VMODE_NONINTERLACED, 0 },
214	/* 1920x1440-85 */
215	{ NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3,
216	0, FB_VMODE_NONINTERLACED, 0 },
217	};
218
3553a2fa AS	219	#ifdef CONFIG_OLPC
	220	#include <asm/olpc.h>
	221
	222	static struct fb_videomode olpc_dcon_modedb[] __initdata = {
	223	/* The only mode the DCON has is 1200x900 */
	224	{ NULL, 50, 1200, 900, 17460, 24, 8, 4, 5, 8, 3,
	225	FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	226	FB_VMODE_NONINTERLACED, 0 }
	227	};
	228
	229	static void __init get_modedb(struct fb_videomode *modedb, unsigned int size)
	230	{
	231	if (olpc_has_dcon()) {
	232	modedb = (struct fb_videomode ) olpc_dcon_modedb;
	233	*size = ARRAY_SIZE(olpc_dcon_modedb);
	234	} else {
	235	modedb = (struct fb_videomode ) geode_modedb;
	236	*size = ARRAY_SIZE(geode_modedb);
	237	}
	238	}
	239
	240	#else
	241	static void __init get_modedb(struct fb_videomode *modedb, unsigned int size)
	242	{
	243	modedb = (struct fb_videomode ) geode_modedb;
	244	*size = ARRAY_SIZE(geode_modedb);
	245	}
	246	#endif
	247
3968cb49 JC	248	static int lxfb_check_var(struct fb_var_screeninfo var, struct fb_info info)
	249	{
	250	if (var->xres > 1920 \|\| var->yres > 1440)
	251	return -EINVAL;
	252
	253	if (var->bits_per_pixel == 32) {
	254	var->red.offset = 16; var->red.length = 8;
	255	var->green.offset = 8; var->green.length = 8;
	256	var->blue.offset = 0; var->blue.length = 8;
	257	} else if (var->bits_per_pixel == 16) {
	258	var->red.offset = 11; var->red.length = 5;
	259	var->green.offset = 5; var->green.length = 6;
	260	var->blue.offset = 0; var->blue.length = 5;
	261	} else if (var->bits_per_pixel == 8) {
	262	var->red.offset = 0; var->red.length = 8;
	263	var->green.offset = 0; var->green.length = 8;
	264	var->blue.offset = 0; var->blue.length = 8;
	265	} else
	266	return -EINVAL;
	267
	268	var->transp.offset = 0; var->transp.length = 0;
	269
	270	/* Enough video memory? */
	271	if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres)
	272	> info->fix.smem_len)
	273	return -EINVAL;
	274
	275	return 0;
	276	}
	277
	278	static int lxfb_set_par(struct fb_info *info)
	279	{
067f1293	280	if (info->var.bits_per_pixel > 8)
3968cb49	281	info->fix.visual = FB_VISUAL_TRUECOLOR;
067f1293	282	else
3968cb49	283	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
3968cb49 JC	284
	285	info->fix.line_length = lx_get_pitch(info->var.xres,
	286	info->var.bits_per_pixel);
	287
	288	lx_set_mode(info);
	289	return 0;
	290	}
	291
	292	static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
	293	{
	294	chan &= 0xffff;
	295	chan >>= 16 - bf->length;
	296	return chan << bf->offset;
	297	}
	298
	299	static int lxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
	300	unsigned blue, unsigned transp,
	301	struct fb_info *info)
	302	{
	303	if (info->var.grayscale) {
	304	/* grayscale = 0.30R + 0.59G + 0.11B /
	305	red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
	306	}
	307
	308	/* Truecolor has hardware independent palette */
	309	if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
	310	u32 *pal = info->pseudo_palette;
	311	u32 v;
	312
	313	if (regno >= 16)
	314	return -EINVAL;
	315
	316	v = chan_to_field(red, &info->var.red);
	317	v \|= chan_to_field(green, &info->var.green);
	318	v \|= chan_to_field(blue, &info->var.blue);
	319
	320	pal[regno] = v;
	321	} else {
	322	if (regno >= 256)
	323	return -EINVAL;
	324
	325	lx_set_palette_reg(info, regno, red, green, blue);
	326	}
	327
	328	return 0;
	329	}
	330
	331	static int lxfb_blank(int blank_mode, struct fb_info *info)
	332	{
	333	return lx_blank_display(info, blank_mode);
	334	}
	335
	336
	337	static int __init lxfb_map_video_memory(struct fb_info *info,
	338	struct pci_dev *dev)
	339	{
	340	struct lxfb_par *par = info->par;
	341	int ret;
	342
	343	ret = pci_enable_device(dev);
	344
	345	if (ret)
	346	return ret;
	347
348	ret = pci_request_region(dev, 0, "lxfb-framebuffer");
349
350	if (ret)
351	return ret;
352
353	ret = pci_request_region(dev, 1, "lxfb-gp");
354
355	if (ret)
356	return ret;
357
358	ret = pci_request_region(dev, 2, "lxfb-vg");
359
360	if (ret)
361	return ret;
362
31f51fa8	363	ret = pci_request_region(dev, 3, "lxfb-vp");
3968cb49 JC	364
	365	if (ret)
	366	return ret;
	367
	368	info->fix.smem_start = pci_resource_start(dev, 0);
c805df3d	369	info->fix.smem_len = vram ? vram : lx_framebuffer_size();
3968cb49 JC	370
	371	info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
	372
	373	ret = -ENOMEM;
	374
	375	if (info->screen_base == NULL)
	376	return ret;
	377
3c36aa5c	378	par->gp_regs = pci_ioremap_bar(dev, 1);
3968cb49 JC	379
	380	if (par->gp_regs == NULL)
	381	return ret;
	382
3c36aa5c	383	par->dc_regs = pci_ioremap_bar(dev, 2);
3968cb49 JC	384
	385	if (par->dc_regs == NULL)
	386	return ret;
	387
3c36aa5c	388	par->vp_regs = pci_ioremap_bar(dev, 3);
3968cb49	389
31f51fa8	390	if (par->vp_regs == NULL)
3968cb49 JC	391	return ret;
3968cb49 JC	392
f5c90e85 AS	393	write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
	394	write_dc(par, DC_GLIU0_MEM_OFFSET, info->fix.smem_start & 0xFF000000);
	395	write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
3968cb49 JC	396
	397	dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",
	398	info->fix.smem_len / 1024, info->fix.smem_start);
	399
	400	return 0;
	401	}
	402
	403	static struct fb_ops lxfb_ops = {
	404	.owner = THIS_MODULE,
	405	.fb_check_var = lxfb_check_var,
	406	.fb_set_par = lxfb_set_par,
	407	.fb_setcolreg = lxfb_setcolreg,
	408	.fb_blank = lxfb_blank,
	409	/* No HW acceleration for now. */
	410	.fb_fillrect = cfb_fillrect,
	411	.fb_copyarea = cfb_copyarea,
	412	.fb_imageblit = cfb_imageblit,
	413	};
	414
	415	static struct fb_info * __init lxfb_init_fbinfo(struct device *dev)
	416	{
	417	struct lxfb_par *par;
	418	struct fb_info *info;
	419
	420	/* Alloc enough space for the pseudo palette. */
	421	info = framebuffer_alloc(sizeof(struct lxfb_par) + sizeof(u32) * 16,
	422	dev);
	423	if (!info)
	424	return NULL;
	425
	426	par = info->par;
	427
	428	strcpy(info->fix.id, "Geode LX");
	429
	430	info->fix.type = FB_TYPE_PACKED_PIXELS;
	431	info->fix.type_aux = 0;
	432	info->fix.xpanstep = 0;
	433	info->fix.ypanstep = 0;
	434	info->fix.ywrapstep = 0;
	435	info->fix.accel = FB_ACCEL_NONE;
	436
	437	info->var.nonstd = 0;
	438	info->var.activate = FB_ACTIVATE_NOW;
	439	info->var.height = -1;
	440	info->var.width = -1;
	441	info->var.accel_flags = 0;
	442	info->var.vmode = FB_VMODE_NONINTERLACED;
	443
	444	info->fbops = &lxfb_ops;
	445	info->flags = FBINFO_DEFAULT;
	446	info->node = -1;
	447
	448	info->pseudo_palette = (void *)par + sizeof(struct lxfb_par);
	449
067f1293 MLP	450	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
	451	framebuffer_release(info);
	452	return NULL;
	453	}
	454
3968cb49 JC	455	info->var.grayscale = 0;
	456
	457	return info;
	458	}
	459
f694e53b AS	460	#ifdef CONFIG_PM
	461	static int lxfb_suspend(struct pci_dev *pdev, pm_message_t state)
	462	{
	463	struct fb_info *info = pci_get_drvdata(pdev);
	464
	465	if (state.event == PM_EVENT_SUSPEND) {
	466	acquire_console_sem();
	467	lx_powerdown(info);
	468	fb_set_suspend(info, 1);
	469	release_console_sem();
	470	}
	471
	472	/* there's no point in setting PCI states; we emulate PCI, so
	473	* we don't end up getting power savings anyways */
	474
	475	return 0;
	476	}
	477
	478	static int lxfb_resume(struct pci_dev *pdev)
	479	{
	480	struct fb_info *info = pci_get_drvdata(pdev);
	481	int ret;
	482
	483	acquire_console_sem();
	484	ret = lx_powerup(info);
	485	if (ret) {
	486	printk(KERN_ERR "lxfb: power up failed!\n");
	487	return ret;
	488	}
	489
	490	fb_set_suspend(info, 0);
	491	release_console_sem();
	492	return 0;
	493	}
	494	#else
	495	#define lxfb_suspend NULL
	496	#define lxfb_resume NULL
	497	#endif
	498
3968cb49 JC	499	static int __init lxfb_probe(struct pci_dev *pdev,
	500	const struct pci_device_id *id)
	501	{
	502	struct lxfb_par *par;
	503	struct fb_info *info;
	504	int ret;
	505
	506	struct fb_videomode *modedb_ptr;
3553a2fa	507	unsigned int modedb_size;
3968cb49 JC	508
	509	info = lxfb_init_fbinfo(&pdev->dev);
	510
	511	if (info == NULL)
	512	return -ENOMEM;
	513
	514	par = info->par;
	515
	516	ret = lxfb_map_video_memory(info, pdev);
	517
	518	if (ret < 0) {
	519	dev_err(&pdev->dev,
	520	"failed to map frame buffer or controller registers\n");
	521	goto err;
	522	}
	523
	524	/* Set up the desired outputs */
	525
	526	par->output = 0;
	527	par->output \|= (nopanel) ? 0 : OUTPUT_PANEL;
	528	par->output \|= (nocrt) ? 0 : OUTPUT_CRT;
	529
	530	/* Set up the mode database */
	531
3553a2fa	532	get_modedb(&modedb_ptr, &modedb_size);
3968cb49 JC	533	ret = fb_find_mode(&info->var, info, mode_option,
	534	modedb_ptr, modedb_size, NULL, 16);
	535
	536	if (ret == 0 \|\| ret == 4) {
	537	dev_err(&pdev->dev, "could not find valid video mode\n");
	538	ret = -EINVAL;
	539	goto err;
	540	}
	541
	542	/* Clear the screen of garbage, unless noclear was specified,
	543	* in which case we assume the user knows what he is doing */
	544
	545	if (!noclear)
	546	memset_io(info->screen_base, 0, info->fix.smem_len);
	547
	548	/* Set the mode */
	549
	550	lxfb_check_var(&info->var, info);
	551	lxfb_set_par(info);
	552
564820d4 AS	553	pm_set_vt_switch(vt_switch);
564820d4 AS	554
3968cb49 JC	555	if (register_framebuffer(info) < 0) {
	556	ret = -EINVAL;
	557	goto err;
	558	}
	559	pci_set_drvdata(pdev, info);
	560	printk(KERN_INFO "fb%d: %s frame buffer device\n",
	561	info->node, info->fix.id);
	562
	563	return 0;
	564
	565	err:
	566	if (info->screen_base) {
	567	iounmap(info->screen_base);
	568	pci_release_region(pdev, 0);
	569	}
	570	if (par->gp_regs) {
	571	iounmap(par->gp_regs);
	572	pci_release_region(pdev, 1);
	573	}
	574	if (par->dc_regs) {
	575	iounmap(par->dc_regs);
	576	pci_release_region(pdev, 2);
	577	}
31f51fa8 AS	578	if (par->vp_regs) {
31f51fa8 AS	579	iounmap(par->vp_regs);
3968cb49 JC	580	pci_release_region(pdev, 3);
	581	}
	582
067f1293 MLP	583	if (info) {
067f1293 MLP	584	fb_dealloc_cmap(&info->cmap);
3968cb49	585	framebuffer_release(info);
067f1293	586	}
3968cb49 JC	587
	588	return ret;
	589	}
	590
	591	static void lxfb_remove(struct pci_dev *pdev)
	592	{
	593	struct fb_info *info = pci_get_drvdata(pdev);
	594	struct lxfb_par *par = info->par;
	595
	596	unregister_framebuffer(info);
	597
	598	iounmap(info->screen_base);
	599	pci_release_region(pdev, 0);
	600
	601	iounmap(par->gp_regs);
	602	pci_release_region(pdev, 1);
	603
	604	iounmap(par->dc_regs);
	605	pci_release_region(pdev, 2);
	606
31f51fa8	607	iounmap(par->vp_regs);
3968cb49 JC	608	pci_release_region(pdev, 3);
3968cb49 JC	609
067f1293	610	fb_dealloc_cmap(&info->cmap);
3968cb49 JC	611	pci_set_drvdata(pdev, NULL);
	612	framebuffer_release(info);
	613	}
	614
	615	static struct pci_device_id lxfb_id_table[] = {
	616	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
	617	{ 0, }
	618	};
	619
	620	MODULE_DEVICE_TABLE(pci, lxfb_id_table);
	621
	622	static struct pci_driver lxfb_driver = {
	623	.name = "lxfb",
	624	.id_table = lxfb_id_table,
	625	.probe = lxfb_probe,
	626	.remove = lxfb_remove,
f694e53b AS	627	.suspend = lxfb_suspend,
f694e53b AS	628	.resume = lxfb_resume,
3968cb49 JC	629	};
	630
	631	#ifndef MODULE
	632	static int __init lxfb_setup(char *options)
	633	{
	634	char *opt;
	635
	636	if (!options \|\| !*options)
	637	return 0;
	638
42b558d5	639	while ((opt = strsep(&options, ",")) != NULL) {
3968cb49 JC	640	if (!*opt)
	641	continue;
	642
c805df3d	643	if (!strcmp(opt, "noclear"))
3968cb49 JC	644	noclear = 1;
	645	else if (!strcmp(opt, "nopanel"))
	646	nopanel = 1;
	647	else if (!strcmp(opt, "nocrt"))
	648	nocrt = 1;
	649	else
	650	mode_option = opt;
	651	}
	652
	653	return 0;
	654	}
	655	#endif
	656
	657	static int __init lxfb_init(void)
	658	{
	659	#ifndef MODULE
	660	char *option = NULL;
	661
	662	if (fb_get_options("lxfb", &option))
	663	return -ENODEV;
	664
	665	lxfb_setup(option);
	666	#endif
	667	return pci_register_driver(&lxfb_driver);
	668	}
	669	static void __exit lxfb_cleanup(void)
	670	{
	671	pci_unregister_driver(&lxfb_driver);
	672	}
	673
	674	module_init(lxfb_init);
	675	module_exit(lxfb_cleanup);
	676
	677	module_param(mode_option, charp, 0);
	678	MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");
	679
c805df3d AS	680	module_param(vram, int, 0);
c805df3d AS	681	MODULE_PARM_DESC(vram, "video memory size");
3968cb49	682
564820d4 AS	683	module_param(vt_switch, int, 0);
	684	MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");
	685
3968cb49 JC	686	MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");
3968cb49 JC	687	MODULE_LICENSE("GPL");