fbdev: Remove support for Carillo Ranch driver

As far as anybody can tell, this product never shipped. If it did,
it shipped in 2007 and nobody has access to one any more. Remove the
fbdev driver and the backlight driver.

Signed-off-by: Matthew Wilcox (Oracle) <[e-mail]>
Signed-off-by: Helge Deller <[e-mail]>

drivers/video/backlight/Kconfig

···
 	  If you have an HP Jornada 700 series,
 	  say Y to include backlight control driver.
 
-config BACKLIGHT_CARILLO_RANCH
-	tristate "Intel Carillo Ranch Backlight Driver"
-	depends on LCD_CLASS_DEVICE && PCI && X86 && FB_LE80578
-	help
-	  If you have a Intel LE80578 (Carillo Ranch) say Y to enable the
-	  backlight driver.
-
 config BACKLIGHT_PWM
 	tristate "Generic PWM based Backlight Driver"
 	depends on PWM

drivers/video/backlight/Makefile

···
 obj-$(CONFIG_BACKLIGHT_APPLE)		+= apple_bl.o
 obj-$(CONFIG_BACKLIGHT_AS3711)		+= as3711_bl.o
 obj-$(CONFIG_BACKLIGHT_BD6107)		+= bd6107.o
-obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH)	+= cr_bllcd.o
 obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE)	+= backlight.o
 obj-$(CONFIG_BACKLIGHT_DA903X)		+= da903x_bl.o
 obj-$(CONFIG_BACKLIGHT_DA9052)		+= da9052_bl.o

drivers/video/backlight/cr_bllcd.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (c) Intel Corp. 2007.
- * All Rights Reserved.
- *
- * Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
- * develop this driver.
- *
- * This file is part of the Carillo Ranch video subsystem driver.
- *
- * Authors:
- *   Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
- *   Alan Hourihane <alanh-at-tungstengraphics-dot-com>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/mutex.h>
-#include <linux/fb.h>
-#include <linux/backlight.h>
-#include <linux/lcd.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-
-/* The LVDS- and panel power controls sits on the
- * GPIO port of the ISA bridge.
- */
-
-#define CRVML_DEVICE_LPC    0x27B8
-#define CRVML_REG_GPIOBAR   0x48
-#define CRVML_REG_GPIOEN    0x4C
-#define CRVML_GPIOEN_BIT    (1 << 4)
-#define CRVML_PANEL_PORT    0x38
-#define CRVML_LVDS_ON       0x00000001
-#define CRVML_PANEL_ON      0x00000002
-#define CRVML_BACKLIGHT_OFF 0x00000004
-
-/* The PLL Clock register sits on Host bridge */
-#define CRVML_DEVICE_MCH   0x5001
-#define CRVML_REG_MCHBAR   0x44
-#define CRVML_REG_MCHEN    0x54
-#define CRVML_MCHEN_BIT    (1 << 28)
-#define CRVML_MCHMAP_SIZE  4096
-#define CRVML_REG_CLOCK    0xc3c
-#define CRVML_CLOCK_SHIFT  8
-#define CRVML_CLOCK_MASK   0x00000f00
-
-static struct pci_dev *lpc_dev;
-static u32 gpio_bar;
-
-struct cr_panel {
-	struct backlight_device *cr_backlight_device;
-	struct lcd_device *cr_lcd_device;
-};
-
-static int cr_backlight_set_intensity(struct backlight_device *bd)
-{
-	u32 addr = gpio_bar + CRVML_PANEL_PORT;
-	u32 cur = inl(addr);
-
-	if (backlight_get_brightness(bd) == 0) {
-		/* OFF */
-		cur |= CRVML_BACKLIGHT_OFF;
-		outl(cur, addr);
-	} else {
-		/* FULL ON */
-		cur &= ~CRVML_BACKLIGHT_OFF;
-		outl(cur, addr);
-	}
-
-	return 0;
-}
-
-static int cr_backlight_get_intensity(struct backlight_device *bd)
-{
-	u32 addr = gpio_bar + CRVML_PANEL_PORT;
-	u32 cur = inl(addr);
-	u8 intensity;
-
-	if (cur & CRVML_BACKLIGHT_OFF)
-		intensity = 0;
-	else
-		intensity = 1;
-
-	return intensity;
-}
-
-static const struct backlight_ops cr_backlight_ops = {
-	.get_brightness = cr_backlight_get_intensity,
-	.update_status = cr_backlight_set_intensity,
-};
-
-static void cr_panel_on(void)
-{
-	u32 addr = gpio_bar + CRVML_PANEL_PORT;
-	u32 cur = inl(addr);
-
-	if (!(cur & CRVML_PANEL_ON)) {
-		/* Make sure LVDS controller is down. */
-		if (cur & 0x00000001) {
-			cur &= ~CRVML_LVDS_ON;
-			outl(cur, addr);
-		}
-		/* Power up Panel */
-		schedule_timeout(HZ / 10);
-		cur |= CRVML_PANEL_ON;
-		outl(cur, addr);
-	}
-
-	/* Power up LVDS controller */
-
-	if (!(cur & CRVML_LVDS_ON)) {
-		schedule_timeout(HZ / 10);
-		outl(cur | CRVML_LVDS_ON, addr);
-	}
-}
-
-static void cr_panel_off(void)
-{
-	u32 addr = gpio_bar + CRVML_PANEL_PORT;
-	u32 cur = inl(addr);
-
-	/* Power down LVDS controller first to avoid high currents */
-	if (cur & CRVML_LVDS_ON) {
-		cur &= ~CRVML_LVDS_ON;
-		outl(cur, addr);
-	}
-	if (cur & CRVML_PANEL_ON) {
-		schedule_timeout(HZ / 10);
-		outl(cur & ~CRVML_PANEL_ON, addr);
-	}
-}
-
-static int cr_lcd_set_power(struct lcd_device *ld, int power)
-{
-	if (power == FB_BLANK_UNBLANK)
-		cr_panel_on();
-	if (power == FB_BLANK_POWERDOWN)
-		cr_panel_off();
-
-	return 0;
-}
-
-static struct lcd_ops cr_lcd_ops = {
-	.set_power = cr_lcd_set_power,
-};
-
-static int cr_backlight_probe(struct platform_device *pdev)
-{
-	struct backlight_properties props;
-	struct backlight_device *bdp;
-	struct lcd_device *ldp;
-	struct cr_panel *crp;
-	u8 dev_en;
-
-	lpc_dev = pci_get_device(PCI_VENDOR_ID_INTEL,
-					CRVML_DEVICE_LPC, NULL);
-	if (!lpc_dev) {
-		pr_err("INTEL CARILLO RANCH LPC not found.\n");
-		return -ENODEV;
-	}
-
-	pci_read_config_byte(lpc_dev, CRVML_REG_GPIOEN, &dev_en);
-	if (!(dev_en & CRVML_GPIOEN_BIT)) {
-		pr_err("Carillo Ranch GPIO device was not enabled.\n");
-		pci_dev_put(lpc_dev);
-		return -ENODEV;
-	}
-
-	memset(&props, 0, sizeof(struct backlight_properties));
-	props.type = BACKLIGHT_RAW;
-	bdp = devm_backlight_device_register(&pdev->dev, "cr-backlight",
-					&pdev->dev, NULL, &cr_backlight_ops,
-					&props);
-	if (IS_ERR(bdp)) {
-		pci_dev_put(lpc_dev);
-		return PTR_ERR(bdp);
-	}
-
-	ldp = devm_lcd_device_register(&pdev->dev, "cr-lcd", &pdev->dev, NULL,
-					&cr_lcd_ops);
-	if (IS_ERR(ldp)) {
-		pci_dev_put(lpc_dev);
-		return PTR_ERR(ldp);
-	}
-
-	pci_read_config_dword(lpc_dev, CRVML_REG_GPIOBAR,
-			      &gpio_bar);
-	gpio_bar &= ~0x3F;
-
-	crp = devm_kzalloc(&pdev->dev, sizeof(*crp), GFP_KERNEL);
-	if (!crp) {
-		pci_dev_put(lpc_dev);
-		return -ENOMEM;
-	}
-
-	crp->cr_backlight_device = bdp;
-	crp->cr_lcd_device = ldp;
-	crp->cr_backlight_device->props.power = FB_BLANK_UNBLANK;
-	crp->cr_backlight_device->props.brightness = 0;
-	cr_backlight_set_intensity(crp->cr_backlight_device);
-	cr_lcd_set_power(crp->cr_lcd_device, FB_BLANK_UNBLANK);
-
-	platform_set_drvdata(pdev, crp);
-
-	return 0;
-}
-
-static void cr_backlight_remove(struct platform_device *pdev)
-{
-	struct cr_panel *crp = platform_get_drvdata(pdev);
-
-	crp->cr_backlight_device->props.power = FB_BLANK_POWERDOWN;
-	crp->cr_backlight_device->props.brightness = 0;
-	crp->cr_backlight_device->props.max_brightness = 0;
-	cr_backlight_set_intensity(crp->cr_backlight_device);
-	cr_lcd_set_power(crp->cr_lcd_device, FB_BLANK_POWERDOWN);
-	pci_dev_put(lpc_dev);
-}
-
-static struct platform_driver cr_backlight_driver = {
-	.probe = cr_backlight_probe,
-	.remove_new = cr_backlight_remove,
-	.driver = {
-		   .name = "cr_backlight",
-		   },
-};
-
-static struct platform_device *crp;
-
-static int __init cr_backlight_init(void)
-{
-	int ret = platform_driver_register(&cr_backlight_driver);
-
-	if (ret)
-		return ret;
-
-	crp = platform_device_register_simple("cr_backlight", -1, NULL, 0);
-	if (IS_ERR(crp)) {
-		platform_driver_unregister(&cr_backlight_driver);
-		return PTR_ERR(crp);
-	}
-
-	pr_info("Carillo Ranch Backlight Driver Initialized.\n");
-
-	return 0;
-}
-
-static void __exit cr_backlight_exit(void)
-{
-	platform_device_unregister(crp);
-	platform_driver_unregister(&cr_backlight_driver);
-}
-
-module_init(cr_backlight_init);
-module_exit(cr_backlight_exit);
-
-MODULE_AUTHOR("Tungsten Graphics Inc.");
-MODULE_DESCRIPTION("Carillo Ranch Backlight Driver");
-MODULE_LICENSE("GPL");

drivers/video/fbdev/Kconfig

···
 
 	  If unsure, say Y.
 
-config FB_LE80578
-	tristate "Intel LE80578 (Vermilion) support"
-	depends on FB && PCI && X86
-	select FB_IOMEM_HELPERS
-	select FB_MODE_HELPERS
-	select VIDEO_NOMODESET
-	help
-	  This driver supports the LE80578 (Vermilion Range) chipset
-
-config FB_CARILLO_RANCH
-	tristate "Intel Carillo Ranch support"
-	depends on FB_LE80578 && FB && PCI && X86
-	help
-	  This driver supports the LE80578 (Carillo Ranch) board
-
 config FB_INTEL
 	tristate "Intel 830M/845G/852GM/855GM/865G/915G/945G/945GM/965G/965GM support"
 	depends on FB && PCI && X86 && AGP_INTEL && EXPERT

drivers/video/fbdev/Makefile

···
 obj-$(CONFIG_FB_FM2)              += fm2fb.o
 obj-$(CONFIG_FB_VT8623)           += vt8623fb.o
 obj-$(CONFIG_FB_TRIDENT)          += tridentfb.o
-obj-$(CONFIG_FB_LE80578)          += vermilion/
 obj-$(CONFIG_FB_S3)               += s3fb.o
 obj-$(CONFIG_FB_ARK)              += arkfb.o
 obj-$(CONFIG_FB_STI)              += stifb.o

drivers/video/fbdev/vermilion/Makefile

···
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_FB_LE80578) += vmlfb.o
-obj-$(CONFIG_FB_CARILLO_RANCH) += crvml.o
-
-vmlfb-objs := vermilion.o
-crvml-objs := cr_pll.o

drivers/video/fbdev/vermilion/cr_pll.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (c) Intel Corp. 2007.
- * All Rights Reserved.
- *
- * Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
- * develop this driver.
- *
- * This file is part of the Carillo Ranch video subsystem driver.
- *
- * Authors:
- *   Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
- *   Alan Hourihane <alanh-at-tungstengraphics-dot-com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/errno.h>
-#include <linux/fb.h>
-#include "vermilion.h"
-
-/* The PLL Clock register sits on Host bridge */
-#define CRVML_DEVICE_MCH   0x5001
-#define CRVML_REG_MCHBAR   0x44
-#define CRVML_REG_MCHEN    0x54
-#define CRVML_MCHEN_BIT    (1 << 28)
-#define CRVML_MCHMAP_SIZE  4096
-#define CRVML_REG_CLOCK    0xc3c
-#define CRVML_CLOCK_SHIFT  8
-#define CRVML_CLOCK_MASK   0x00000f00
-
-static struct pci_dev *mch_dev;
-static u32 mch_bar;
-static void __iomem *mch_regs_base;
-static u32 saved_clock;
-
-static const unsigned crvml_clocks[] = {
-	6750,
-	13500,
-	27000,
-	29700,
-	37125,
-	54000,
-	59400,
-	74250,
-	120000
-	    /*
-	     * There are more clocks, but they are disabled on the CR board.
-	     */
-};
-
-static const u32 crvml_clock_bits[] = {
-	0x0a,
-	0x09,
-	0x08,
-	0x07,
-	0x06,
-	0x05,
-	0x04,
-	0x03,
-	0x0b
-};
-
-static const unsigned crvml_num_clocks = ARRAY_SIZE(crvml_clocks);
-
-static int crvml_sys_restore(struct vml_sys *sys)
-{
-	void __iomem *clock_reg = mch_regs_base + CRVML_REG_CLOCK;
-
-	iowrite32(saved_clock, clock_reg);
-	ioread32(clock_reg);
-
-	return 0;
-}
-
-static int crvml_sys_save(struct vml_sys *sys)
-{
-	void __iomem *clock_reg = mch_regs_base + CRVML_REG_CLOCK;
-
-	saved_clock = ioread32(clock_reg);
-
-	return 0;
-}
-
-static int crvml_nearest_index(const struct vml_sys *sys, int clock)
-{
-	int i;
-	int cur_index = 0;
-	int cur_diff;
-	int diff;
-
-	cur_diff = clock - crvml_clocks[0];
-	cur_diff = (cur_diff < 0) ? -cur_diff : cur_diff;
-	for (i = 1; i < crvml_num_clocks; ++i) {
-		diff = clock - crvml_clocks[i];
-		diff = (diff < 0) ? -diff : diff;
-		if (diff < cur_diff) {
-			cur_index = i;
-			cur_diff = diff;
-		}
-	}
-	return cur_index;
-}
-
-static int crvml_nearest_clock(const struct vml_sys *sys, int clock)
-{
-	return crvml_clocks[crvml_nearest_index(sys, clock)];
-}
-
-static int crvml_set_clock(struct vml_sys *sys, int clock)
-{
-	void __iomem *clock_reg = mch_regs_base + CRVML_REG_CLOCK;
-	int index;
-	u32 clock_val;
-
-	index = crvml_nearest_index(sys, clock);
-
-	if (crvml_clocks[index] != clock)
-		return -EINVAL;
-
-	clock_val = ioread32(clock_reg) & ~CRVML_CLOCK_MASK;
-	clock_val = crvml_clock_bits[index] << CRVML_CLOCK_SHIFT;
-	iowrite32(clock_val, clock_reg);
-	ioread32(clock_reg);
-
-	return 0;
-}
-
-static struct vml_sys cr_pll_ops = {
-	.name = "Carillo Ranch",
-	.save = crvml_sys_save,
-	.restore = crvml_sys_restore,
-	.set_clock = crvml_set_clock,
-	.nearest_clock = crvml_nearest_clock,
-};
-
-static int __init cr_pll_init(void)
-{
-	int err;
-	u32 dev_en;
-
-	mch_dev = pci_get_device(PCI_VENDOR_ID_INTEL,
-					CRVML_DEVICE_MCH, NULL);
-	if (!mch_dev) {
-		printk(KERN_ERR
-		       "Could not find Carillo Ranch MCH device.\n");
-		return -ENODEV;
-	}
-
-	pci_read_config_dword(mch_dev, CRVML_REG_MCHEN, &dev_en);
-	if (!(dev_en & CRVML_MCHEN_BIT)) {
-		printk(KERN_ERR
-		       "Carillo Ranch MCH device was not enabled.\n");
-		pci_dev_put(mch_dev);
-		return -ENODEV;
-	}
-
-	pci_read_config_dword(mch_dev, CRVML_REG_MCHBAR,
-			      &mch_bar);
-	mch_regs_base =
-	    ioremap(mch_bar, CRVML_MCHMAP_SIZE);
-	if (!mch_regs_base) {
-		printk(KERN_ERR
-		       "Carillo Ranch MCH device was not enabled.\n");
-		pci_dev_put(mch_dev);
-		return -ENODEV;
-	}
-
-	err = vmlfb_register_subsys(&cr_pll_ops);
-	if (err) {
-		printk(KERN_ERR
-		       "Carillo Ranch failed to initialize vml_sys.\n");
-		iounmap(mch_regs_base);
-		pci_dev_put(mch_dev);
-		return err;
-	}
-
-	return 0;
-}
-
-static void __exit cr_pll_exit(void)
-{
-	vmlfb_unregister_subsys(&cr_pll_ops);
-
-	iounmap(mch_regs_base);
-	pci_dev_put(mch_dev);
-}
-
-module_init(cr_pll_init);
-module_exit(cr_pll_exit);
-
-MODULE_AUTHOR("Tungsten Graphics Inc.");
-MODULE_DESCRIPTION("Carillo Ranch PLL Driver");
-MODULE_LICENSE("GPL");

drivers/video/fbdev/vermilion/vermilion.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (c) Intel Corp. 2007.
- * All Rights Reserved.
- *
- * Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
- * develop this driver.
- *
- * This file is part of the Vermilion Range fb driver.
- *
- * Authors:
- *   Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- *   Michel Dänzer <michel-at-tungstengraphics-dot-com>
- *   Alan Hourihane <alanh-at-tungstengraphics-dot-com>
- */
-
-#include <linux/aperture.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/fb.h>
-#include <linux/pci.h>
-#include <asm/set_memory.h>
-#include <asm/tlbflush.h>
-#include <linux/mmzone.h>
-
-/* #define VERMILION_DEBUG */
-
-#include "vermilion.h"
-
-#define MODULE_NAME "vmlfb"
-
-#define VML_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
-
-static struct mutex vml_mutex;
-static struct list_head global_no_mode;
-static struct list_head global_has_mode;
-static struct fb_ops vmlfb_ops;
-static struct vml_sys *subsys = NULL;
-static char *vml_default_mode = "1024x768@60";
-static const struct fb_videomode defaultmode = {
-	NULL, 60, 1024, 768, 12896, 144, 24, 29, 3, 136, 6,
-	0, FB_VMODE_NONINTERLACED
-};
-
-static u32 vml_mem_requested = (10 * 1024 * 1024);
-static u32 vml_mem_contig = (4 * 1024 * 1024);
-static u32 vml_mem_min = (4 * 1024 * 1024);
-
-static u32 vml_clocks[] = {
-	6750,
-	13500,
-	27000,
-	29700,
-	37125,
-	54000,
-	59400,
-	74250,
-	120000,
-	148500
-};
-
-static u32 vml_num_clocks = ARRAY_SIZE(vml_clocks);
-
-/*
- * Allocate a contiguous vram area and make its linear kernel map
- * uncached.
- */
-
-static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order,
-				 unsigned min_order)
-{
-	gfp_t flags;
-	unsigned long i;
-
-	max_order++;
-	do {
-		/*
-		 * Really try hard to get the needed memory.
-		 * We need memory below the first 32MB, so we
-		 * add the __GFP_DMA flag that guarantees that we are
-		 * below the first 16MB.
-		 */
-
-		flags = __GFP_DMA | __GFP_HIGH | __GFP_KSWAPD_RECLAIM;
-		va->logical =
-			 __get_free_pages(flags, --max_order);
-	} while (va->logical == 0 && max_order > min_order);
-
-	if (!va->logical)
-		return -ENOMEM;
-
-	va->phys = virt_to_phys((void *)va->logical);
-	va->size = PAGE_SIZE << max_order;
-	va->order = max_order;
-
-	/*
-	 * It seems like __get_free_pages only ups the usage count
-	 * of the first page. This doesn't work with fault mapping, so
-	 * up the usage count once more (XXX: should use split_page or
-	 * compound page).
-	 */
-
-	memset((void *)va->logical, 0x00, va->size);
-	for (i = va->logical; i < va->logical + va->size; i += PAGE_SIZE) {
-		get_page(virt_to_page(i));
-	}
-
-	/*
-	 * Change caching policy of the linear kernel map to avoid
-	 * mapping type conflicts with user-space mappings.
-	 */
-	set_pages_uc(virt_to_page(va->logical), va->size >> PAGE_SHIFT);
-
-	printk(KERN_DEBUG MODULE_NAME
-	       ": Allocated %ld bytes vram area at 0x%08lx\n",
-	       va->size, va->phys);
-
-	return 0;
-}
-
-/*
- * Free a contiguous vram area and reset its linear kernel map
- * mapping type.
- */
-
-static void vmlfb_free_vram_area(struct vram_area *va)
-{
-	unsigned long j;
-
-	if (va->logical) {
-
-		/*
-		 * Reset the linear kernel map caching policy.
-		 */
-
-		set_pages_wb(virt_to_page(va->logical),
-				 va->size >> PAGE_SHIFT);
-
-		/*
-		 * Decrease the usage count on the pages we've used
-		 * to compensate for upping when allocating.
-		 */
-
-		for (j = va->logical; j < va->logical + va->size;
-		     j += PAGE_SIZE) {
-			(void)put_page_testzero(virt_to_page(j));
-		}
-
-		printk(KERN_DEBUG MODULE_NAME
-		       ": Freeing %ld bytes vram area at 0x%08lx\n",
-		       va->size, va->phys);
-		free_pages(va->logical, va->order);
-
-		va->logical = 0;
-	}
-}
-
-/*
- * Free allocated vram.
- */
-
-static void vmlfb_free_vram(struct vml_info *vinfo)
-{
-	int i;
-
-	for (i = 0; i < vinfo->num_areas; ++i) {
-		vmlfb_free_vram_area(&vinfo->vram[i]);
-	}
-	vinfo->num_areas = 0;
-}
-
-/*
- * Allocate vram. Currently we try to allocate contiguous areas from the
- * __GFP_DMA zone and puzzle them together. A better approach would be to
- * allocate one contiguous area for scanout and use one-page allocations for
- * offscreen areas. This requires user-space and GPU virtual mappings.
- */
-
-static int vmlfb_alloc_vram(struct vml_info *vinfo,
-			    size_t requested,
-			    size_t min_total, size_t min_contig)
-{
-	int i, j;
-	int order;
-	int contiguous;
-	int err;
-	struct vram_area *va;
-	struct vram_area *va2;
-
-	vinfo->num_areas = 0;
-	for (i = 0; i < VML_VRAM_AREAS; ++i) {
-		va = &vinfo->vram[i];
-		order = 0;
-
-		while (requested > (PAGE_SIZE << order) && order <= MAX_PAGE_ORDER)
-			order++;
-
-		err = vmlfb_alloc_vram_area(va, order, 0);
-
-		if (err)
-			break;
-
-		if (i == 0) {
-			vinfo->vram_start = va->phys;
-			vinfo->vram_logical = (void __iomem *) va->logical;
-			vinfo->vram_contig_size = va->size;
-			vinfo->num_areas = 1;
-		} else {
-			contiguous = 0;
-
-			for (j = 0; j < i; ++j) {
-				va2 = &vinfo->vram[j];
-				if (va->phys + va->size == va2->phys ||
-				    va2->phys + va2->size == va->phys) {
-					contiguous = 1;
-					break;
-				}
-			}
-
-			if (contiguous) {
-				vinfo->num_areas++;
-				if (va->phys < vinfo->vram_start) {
-					vinfo->vram_start = va->phys;
-					vinfo->vram_logical =
-						(void __iomem *)va->logical;
-				}
-				vinfo->vram_contig_size += va->size;
-			} else {
-				vmlfb_free_vram_area(va);
-				break;
-			}
-		}
-
-		if (requested < va->size)
-			break;
-		else
-			requested -= va->size;
-	}
-
-	if (vinfo->vram_contig_size > min_total &&
-	    vinfo->vram_contig_size > min_contig) {
-
-		printk(KERN_DEBUG MODULE_NAME
-		       ": Contiguous vram: %ld bytes at physical 0x%08lx.\n",
-		       (unsigned long)vinfo->vram_contig_size,
-		       (unsigned long)vinfo->vram_start);
-
-		return 0;
-	}
-
-	printk(KERN_ERR MODULE_NAME
-	       ": Could not allocate requested minimal amount of vram.\n");
-
-	vmlfb_free_vram(vinfo);
-
-	return -ENOMEM;
-}
-
-/*
- * Find the GPU to use with our display controller.
- */
-
-static int vmlfb_get_gpu(struct vml_par *par)
-{
-	mutex_lock(&vml_mutex);
-
-	par->gpu = pci_get_device(PCI_VENDOR_ID_INTEL, VML_DEVICE_GPU, NULL);
-
-	if (!par->gpu) {
-		mutex_unlock(&vml_mutex);
-		return -ENODEV;
-	}
-
-	mutex_unlock(&vml_mutex);
-
-	if (pci_enable_device(par->gpu) < 0) {
-		pci_dev_put(par->gpu);
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-/*
- * Find a contiguous vram area that contains a given offset from vram start.
- */
-static int vmlfb_vram_offset(struct vml_info *vinfo, unsigned long offset)
-{
-	unsigned long aoffset;
-	unsigned i;
-
-	for (i = 0; i < vinfo->num_areas; ++i) {
-		aoffset = offset - (vinfo->vram[i].phys - vinfo->vram_start);
-
-		if (aoffset < vinfo->vram[i].size) {
-			return 0;
-		}
-	}
-
-	return -EINVAL;
-}
-
-/*
- * Remap the MMIO register spaces of the VDC and the GPU.
- */
-
-static int vmlfb_enable_mmio(struct vml_par *par)
-{
-	int err;
-
-	par->vdc_mem_base = pci_resource_start(par->vdc, 0);
-	par->vdc_mem_size = pci_resource_len(par->vdc, 0);
-	if (!request_mem_region(par->vdc_mem_base, par->vdc_mem_size, "vmlfb")) {
-		printk(KERN_ERR MODULE_NAME
-		       ": Could not claim display controller MMIO.\n");
-		return -EBUSY;
-	}
-	par->vdc_mem = ioremap(par->vdc_mem_base, par->vdc_mem_size);
-	if (par->vdc_mem == NULL) {
-		printk(KERN_ERR MODULE_NAME
-		       ": Could not map display controller MMIO.\n");
-		err = -ENOMEM;
-		goto out_err_0;
-	}
-
-	par->gpu_mem_base = pci_resource_start(par->gpu, 0);
-	par->gpu_mem_size = pci_resource_len(par->gpu, 0);
-	if (!request_mem_region(par->gpu_mem_base, par->gpu_mem_size, "vmlfb")) {
-		printk(KERN_ERR MODULE_NAME ": Could not claim GPU MMIO.\n");
-		err = -EBUSY;
-		goto out_err_1;
-	}
-	par->gpu_mem = ioremap(par->gpu_mem_base, par->gpu_mem_size);
-	if (par->gpu_mem == NULL) {
-		printk(KERN_ERR MODULE_NAME ": Could not map GPU MMIO.\n");
-		err = -ENOMEM;
-		goto out_err_2;
-	}
-
-	return 0;
-
-out_err_2:
-	release_mem_region(par->gpu_mem_base, par->gpu_mem_size);
-out_err_1:
-	iounmap(par->vdc_mem);
-out_err_0:
-	release_mem_region(par->vdc_mem_base, par->vdc_mem_size);
-	return err;
-}
-
-/*
- * Unmap the VDC and GPU register spaces.
- */
-
-static void vmlfb_disable_mmio(struct vml_par *par)
-{
-	iounmap(par->gpu_mem);
-	release_mem_region(par->gpu_mem_base, par->gpu_mem_size);
-	iounmap(par->vdc_mem);
-	release_mem_region(par->vdc_mem_base, par->vdc_mem_size);
-}
-
-/*
- * Release and uninit the VDC and GPU.
- */
-
-static void vmlfb_release_devices(struct vml_par *par)
-{
-	if (atomic_dec_and_test(&par->refcount)) {
-		pci_disable_device(par->gpu);
-		pci_disable_device(par->vdc);
-	}
-}
-
-/*
- * Free up allocated resources for a device.
- */
-
-static void vml_pci_remove(struct pci_dev *dev)
-{
-	struct fb_info *info;
-	struct vml_info *vinfo;
-	struct vml_par *par;
-
-	info = pci_get_drvdata(dev);
-	if (info) {
-		vinfo = container_of(info, struct vml_info, info);
-		par = vinfo->par;
-		mutex_lock(&vml_mutex);
-		unregister_framebuffer(info);
-		fb_dealloc_cmap(&info->cmap);
-		vmlfb_free_vram(vinfo);
-		vmlfb_disable_mmio(par);
-		vmlfb_release_devices(par);
-		kfree(vinfo);
-		kfree(par);
-		mutex_unlock(&vml_mutex);
-	}
-}
-
-static void vmlfb_set_pref_pixel_format(struct fb_var_screeninfo *var)
-{
-	switch (var->bits_per_pixel) {
-	case 16:
-		var->blue.offset = 0;
-		var->blue.length = 5;
-		var->green.offset = 5;
-		var->green.length = 5;
-		var->red.offset = 10;
-		var->red.length = 5;
-		var->transp.offset = 15;
-		var->transp.length = 1;
-		break;
-	case 32:
-		var->blue.offset = 0;
-		var->blue.length = 8;
-		var->green.offset = 8;
-		var->green.length = 8;
-		var->red.offset = 16;
-		var->red.length = 8;
-		var->transp.offset = 24;
-		var->transp.length = 0;
-		break;
-	default:
-		break;
-	}
-
-	var->blue.msb_right = var->green.msb_right =
-	    var->red.msb_right = var->transp.msb_right = 0;
-}
-
-/*
- * Device initialization.
- * We initialize one vml_par struct per device and one vml_info
- * struct per pipe. Currently we have only one pipe.
- */
-
-static int vml_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
-{
-	struct vml_info *vinfo;
-	struct fb_info *info;
-	struct vml_par *par;
-	int err;
-
-	err = aperture_remove_conflicting_pci_devices(dev, "vmlfb");
-	if (err)
-		return err;
-
-	par = kzalloc(sizeof(*par), GFP_KERNEL);
-	if (par == NULL)
-		return -ENOMEM;
-
-	vinfo = kzalloc(sizeof(*vinfo), GFP_KERNEL);
-	if (vinfo == NULL) {
-		err = -ENOMEM;
-		goto out_err_0;
-	}
-
-	vinfo->par = par;
-	par->vdc = dev;
-	atomic_set(&par->refcount, 1);
-
-	switch (id->device) {
-	case VML_DEVICE_VDC:
-		if ((err = vmlfb_get_gpu(par)))
-			goto out_err_1;
-		pci_set_drvdata(dev, &vinfo->info);
-		break;
-	default:
-		err = -ENODEV;
-		goto out_err_1;
-	}
-
-	info = &vinfo->info;
-	info->flags = FBINFO_PARTIAL_PAN_OK;
-
-	err = vmlfb_enable_mmio(par);
-	if (err)
-		goto out_err_2;
-
-	err = vmlfb_alloc_vram(vinfo, vml_mem_requested,
-			       vml_mem_contig, vml_mem_min);
-	if (err)
-		goto out_err_3;
-
-	strcpy(info->fix.id, "Vermilion Range");
-	info->fix.mmio_start = 0;
-	info->fix.mmio_len = 0;
-	info->fix.smem_start = vinfo->vram_start;
-	info->fix.smem_len = vinfo->vram_contig_size;
-	info->fix.type = FB_TYPE_PACKED_PIXELS;
-	info->fix.visual = FB_VISUAL_TRUECOLOR;
-	info->fix.ypanstep = 1;
-	info->fix.xpanstep = 1;
-	info->fix.ywrapstep = 0;
-	info->fix.accel = FB_ACCEL_NONE;
-	info->screen_base = vinfo->vram_logical;
-	info->pseudo_palette = vinfo->pseudo_palette;
-	info->par = par;
-	info->fbops = &vmlfb_ops;
-	info->device = &dev->dev;
-
-	INIT_LIST_HEAD(&vinfo->head);
-	vinfo->pipe_disabled = 1;
-	vinfo->cur_blank_mode = FB_BLANK_UNBLANK;
-
-	info->var.grayscale = 0;
-	info->var.bits_per_pixel = 16;
-	vmlfb_set_pref_pixel_format(&info->var);
-
-	if (!fb_find_mode
-	    (&info->var, info, vml_default_mode, NULL, 0, &defaultmode, 16)) {
-		printk(KERN_ERR MODULE_NAME ": Could not find initial mode\n");
-	}
-
-	if (fb_alloc_cmap(&info->cmap, 256, 1) < 0) {
-		err = -ENOMEM;
-		goto out_err_4;
-	}
-
-	err = register_framebuffer(info);
-	if (err) {
-		printk(KERN_ERR MODULE_NAME ": Register framebuffer error.\n");
-		goto out_err_5;
-	}
-
-	printk("Initialized vmlfb\n");
-
-	return 0;
-
-out_err_5:
-	fb_dealloc_cmap(&info->cmap);
-out_err_4:
-	vmlfb_free_vram(vinfo);
-out_err_3:
-	vmlfb_disable_mmio(par);
-out_err_2:
-	vmlfb_release_devices(par);
-out_err_1:
-	kfree(vinfo);
-out_err_0:
-	kfree(par);
-	return err;
-}
-
-static int vmlfb_open(struct fb_info *info, int user)
-{
-	/*
-	 * Save registers here?
-	 */
-	return 0;
-}
-
-static int vmlfb_release(struct fb_info *info, int user)
-{
-	/*
-	 * Restore registers here.
-	 */
-
-	return 0;
-}
-
-static int vml_nearest_clock(int clock)
-{
-
-	int i;
-	int cur_index;
-	int cur_diff;
-	int diff;
-
-	cur_index = 0;
-	cur_diff = clock - vml_clocks[0];
-	cur_diff = (cur_diff < 0) ? -cur_diff : cur_diff;
-	for (i = 1; i < vml_num_clocks; ++i) {
-		diff = clock - vml_clocks[i];
-		diff = (diff < 0) ? -diff : diff;
-		if (diff < cur_diff) {
-			cur_index = i;
-			cur_diff = diff;
-		}
-	}
-	return vml_clocks[cur_index];
-}
-
-static int vmlfb_check_var_locked(struct fb_var_screeninfo *var,
-				  struct vml_info *vinfo)
-{
-	u32 pitch;
-	u64 mem;
-	int nearest_clock;
-	int clock;
-	int clock_diff;
-	struct fb_var_screeninfo v;
-
-	v = *var;
-	clock = PICOS2KHZ(var->pixclock);
-
-	if (subsys && subsys->nearest_clock) {
-		nearest_clock = subsys->nearest_clock(subsys, clock);
-	} else {
-		nearest_clock = vml_nearest_clock(clock);
-	}
-
-	/*
-	 * Accept a 20% diff.
-	 */
-
-	clock_diff = nearest_clock - clock;
-	clock_diff = (clock_diff < 0) ? -clock_diff : clock_diff;
-	if (clock_diff > clock / 5) {
-#if 0
-		printk(KERN_DEBUG MODULE_NAME ": Diff failure. %d %d\n",clock_diff,clock);
-#endif
-		return -EINVAL;
-	}
-
-	v.pixclock = KHZ2PICOS(nearest_clock);
-
-	if (var->xres > VML_MAX_XRES || var->yres > VML_MAX_YRES) {
-		printk(KERN_DEBUG MODULE_NAME ": Resolution failure.\n");
-		return -EINVAL;
-	}
-	if (var->xres_virtual > VML_MAX_XRES_VIRTUAL) {
-		printk(KERN_DEBUG MODULE_NAME
-		       ": Virtual resolution failure.\n");
-		return -EINVAL;
-	}
-	switch (v.bits_per_pixel) {
-	case 0 ... 16:
-		v.bits_per_pixel = 16;
-		break;
-	case 17 ... 32:
-		v.bits_per_pixel = 32;
-		break;
-	default:
-		printk(KERN_DEBUG MODULE_NAME ": Invalid bpp: %d.\n",
-		       var->bits_per_pixel);
-		return -EINVAL;
-	}
-
-	pitch = ALIGN((var->xres * var->bits_per_pixel) >> 3, 0x40);
-	mem = (u64)pitch * var->yres_virtual;
-	if (mem > vinfo->vram_contig_size) {
-		return -ENOMEM;
-	}
-
-	switch (v.bits_per_pixel) {
-	case 16:
-		if (var->blue.offset != 0 ||
-		    var->blue.length != 5 ||
-		    var->green.offset != 5 ||
-		    var->green.length != 5 ||
-		    var->red.offset != 10 ||
-		    var->red.length != 5 ||
-		    var->transp.offset != 15 || var->transp.length != 1) {
-			vmlfb_set_pref_pixel_format(&v);
-		}
-		break;
-	case 32:
-		if (var->blue.offset != 0 ||
-		    var->blue.length != 8 ||
-		    var->green.offset != 8 ||
-		    var->green.length != 8 ||
-		    var->red.offset != 16 ||
-		    var->red.length != 8 ||
-		    (var->transp.length != 0 && var->transp.length != 8) ||
-		    (var->transp.length == 8 && var->transp.offset != 24)) {
-			vmlfb_set_pref_pixel_format(&v);
-		}
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	*var = v;
-
-	return 0;
-}
-
-static int vmlfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
-{
-	struct vml_info *vinfo = container_of(info, struct vml_info, info);
-	int ret;
-
-	mutex_lock(&vml_mutex);
-	ret = vmlfb_check_var_locked(var, vinfo);
-	mutex_unlock(&vml_mutex);
-
-	return ret;
-}
-
-static void vml_wait_vblank(struct vml_info *vinfo)
-{
-	/* Wait for vblank. For now, just wait for a 50Hz cycle (20ms)) */
-	mdelay(20);
-}
-
-static void vmlfb_disable_pipe(struct vml_info *vinfo)
-{
-	struct vml_par *par = vinfo->par;
-
-	/* Disable the MDVO pad */
-	VML_WRITE32(par, VML_RCOMPSTAT, 0);
-	while (!(VML_READ32(par, VML_RCOMPSTAT) & VML_MDVO_VDC_I_RCOMP)) ;
-
-	/* Disable display planes */
-	VML_WRITE32(par, VML_DSPCCNTR,
-		    VML_READ32(par, VML_DSPCCNTR) & ~VML_GFX_ENABLE);
-	(void)VML_READ32(par, VML_DSPCCNTR);
-	/* Wait for vblank for the disable to take effect */
-	vml_wait_vblank(vinfo);
-
-	/* Next, disable display pipes */
-	VML_WRITE32(par, VML_PIPEACONF, 0);
-	(void)VML_READ32(par, VML_PIPEACONF);
-
-	vinfo->pipe_disabled = 1;
-}
-
-#ifdef VERMILION_DEBUG
-static void vml_dump_regs(struct vml_info *vinfo)
-{
-	struct vml_par *par = vinfo->par;
-
-	printk(KERN_DEBUG MODULE_NAME ": Modesetting register dump:\n");
-	printk(KERN_DEBUG MODULE_NAME ": \tHTOTAL_A         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_HTOTAL_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tHBLANK_A         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_HBLANK_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tHSYNC_A          : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_HSYNC_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tVTOTAL_A         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_VTOTAL_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tVBLANK_A         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_VBLANK_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tVSYNC_A          : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_VSYNC_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tDSPCSTRIDE       : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_DSPCSTRIDE));
-	printk(KERN_DEBUG MODULE_NAME ": \tDSPCSIZE         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_DSPCSIZE));
-	printk(KERN_DEBUG MODULE_NAME ": \tDSPCPOS          : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_DSPCPOS));
-	printk(KERN_DEBUG MODULE_NAME ": \tDSPARB           : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_DSPARB));
-	printk(KERN_DEBUG MODULE_NAME ": \tDSPCADDR         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_DSPCADDR));
-	printk(KERN_DEBUG MODULE_NAME ": \tBCLRPAT_A        : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_BCLRPAT_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tCANVSCLR_A       : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_CANVSCLR_A));
-	printk(KERN_DEBUG MODULE_NAME ": \tPIPEASRC         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_PIPEASRC));
-	printk(KERN_DEBUG MODULE_NAME ": \tPIPEACONF        : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_PIPEACONF));
-	printk(KERN_DEBUG MODULE_NAME ": \tDSPCCNTR         : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_DSPCCNTR));
-	printk(KERN_DEBUG MODULE_NAME ": \tRCOMPSTAT        : 0x%08x\n",
-	       (unsigned)VML_READ32(par, VML_RCOMPSTAT));
-	printk(KERN_DEBUG MODULE_NAME ": End of modesetting register dump.\n");
-}
-#endif
-
-static int vmlfb_set_par_locked(struct vml_info *vinfo)
-{
-	struct vml_par *par = vinfo->par;
-	struct fb_info *info = &vinfo->info;
-	struct fb_var_screeninfo *var = &info->var;
-	u32 htotal, hactive, hblank_start, hblank_end, hsync_start, hsync_end;
-	u32 vtotal, vactive, vblank_start, vblank_end, vsync_start, vsync_end;
-	u32 dspcntr;
-	int clock;
-
-	vinfo->bytes_per_pixel = var->bits_per_pixel >> 3;
-	vinfo->stride = ALIGN(var->xres_virtual * vinfo->bytes_per_pixel, 0x40);
-	info->fix.line_length = vinfo->stride;
-
-	if (!subsys)
-		return 0;
-
-	htotal =
-	    var->xres + var->right_margin + var->hsync_len + var->left_margin;
-	hactive = var->xres;
-	hblank_start = var->xres;
-	hblank_end = htotal;
-	hsync_start = hactive + var->right_margin;
-	hsync_end = hsync_start + var->hsync_len;
-
-	vtotal =
-	    var->yres + var->lower_margin + var->vsync_len + var->upper_margin;
-	vactive = var->yres;
-	vblank_start = var->yres;
-	vblank_end = vtotal;
-	vsync_start = vactive + var->lower_margin;
-	vsync_end = vsync_start + var->vsync_len;
-
-	dspcntr = VML_GFX_ENABLE | VML_GFX_GAMMABYPASS;
-	clock = PICOS2KHZ(var->pixclock);
-
-	if (subsys->nearest_clock) {
-		clock = subsys->nearest_clock(subsys, clock);
-	} else {
-		clock = vml_nearest_clock(clock);
-	}
-	printk(KERN_DEBUG MODULE_NAME
-	       ": Set mode Hfreq : %d kHz, Vfreq : %d Hz.\n", clock / htotal,
-	       ((clock / htotal) * 1000) / vtotal);
-
-	switch (var->bits_per_pixel) {
-	case 16:
-		dspcntr |= VML_GFX_ARGB1555;
-		break;
-	case 32:
-		if (var->transp.length == 8)
-			dspcntr |= VML_GFX_ARGB8888 | VML_GFX_ALPHAMULT;
-		else
-			dspcntr |= VML_GFX_RGB0888;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	vmlfb_disable_pipe(vinfo);
-	mb();
-
-	if (subsys->set_clock)
-		subsys->set_clock(subsys, clock);
-	else
-		return -EINVAL;
-
-	VML_WRITE32(par, VML_HTOTAL_A, ((htotal - 1) << 16) | (hactive - 1));
-	VML_WRITE32(par, VML_HBLANK_A,
-		    ((hblank_end - 1) << 16) | (hblank_start - 1));
-	VML_WRITE32(par, VML_HSYNC_A,
-		    ((hsync_end - 1) << 16) | (hsync_start - 1));
-	VML_WRITE32(par, VML_VTOTAL_A, ((vtotal - 1) << 16) | (vactive - 1));
-	VML_WRITE32(par, VML_VBLANK_A,
-		    ((vblank_end - 1) << 16) | (vblank_start - 1));
-	VML_WRITE32(par, VML_VSYNC_A,
-		    ((vsync_end - 1) << 16) | (vsync_start - 1));
-	VML_WRITE32(par, VML_DSPCSTRIDE, vinfo->stride);
-	VML_WRITE32(par, VML_DSPCSIZE,
-		    ((var->yres - 1) << 16) | (var->xres - 1));
-	VML_WRITE32(par, VML_DSPCPOS, 0x00000000);
-	VML_WRITE32(par, VML_DSPARB, VML_FIFO_DEFAULT);
-	VML_WRITE32(par, VML_BCLRPAT_A, 0x00000000);
-	VML_WRITE32(par, VML_CANVSCLR_A, 0x00000000);
-	VML_WRITE32(par, VML_PIPEASRC,
-		    ((var->xres - 1) << 16) | (var->yres - 1));
-
-	wmb();
-	VML_WRITE32(par, VML_PIPEACONF, VML_PIPE_ENABLE);
-	wmb();
-	VML_WRITE32(par, VML_DSPCCNTR, dspcntr);
-	wmb();
-	VML_WRITE32(par, VML_DSPCADDR, (u32) vinfo->vram_start +
-		    var->yoffset * vinfo->stride +
-		    var->xoffset * vinfo->bytes_per_pixel);
-
-	VML_WRITE32(par, VML_RCOMPSTAT, VML_MDVO_PAD_ENABLE);
-
-	while (!(VML_READ32(par, VML_RCOMPSTAT) &
-		 (VML_MDVO_VDC_I_RCOMP | VML_MDVO_PAD_ENABLE))) ;
-
-	vinfo->pipe_disabled = 0;
-#ifdef VERMILION_DEBUG
-	vml_dump_regs(vinfo);
-#endif
-
-	return 0;
-}
-
-static int vmlfb_set_par(struct fb_info *info)
-{
-	struct vml_info *vinfo = container_of(info, struct vml_info, info);
-	int ret;
-
-	mutex_lock(&vml_mutex);
-	list_move(&vinfo->head, (subsys) ? &global_has_mode : &global_no_mode);
-	ret = vmlfb_set_par_locked(vinfo);
-
-	mutex_unlock(&vml_mutex);
-	return ret;
-}
-
-static int vmlfb_blank_locked(struct vml_info *vinfo)
-{
-	struct vml_par *par = vinfo->par;
-	u32 cur = VML_READ32(par, VML_PIPEACONF);
-
-	switch (vinfo->cur_blank_mode) {
-	case FB_BLANK_UNBLANK:
-		if (vinfo->pipe_disabled) {
-			vmlfb_set_par_locked(vinfo);
-		}
-		VML_WRITE32(par, VML_PIPEACONF, cur & ~VML_PIPE_FORCE_BORDER);
-		(void)VML_READ32(par, VML_PIPEACONF);
-		break;
-	case FB_BLANK_NORMAL:
-		if (vinfo->pipe_disabled) {
-			vmlfb_set_par_locked(vinfo);
-		}
-		VML_WRITE32(par, VML_PIPEACONF, cur | VML_PIPE_FORCE_BORDER);
-		(void)VML_READ32(par, VML_PIPEACONF);
-		break;
-	case FB_BLANK_VSYNC_SUSPEND:
-	case FB_BLANK_HSYNC_SUSPEND:
-		if (!vinfo->pipe_disabled) {
-			vmlfb_disable_pipe(vinfo);
-		}
-		break;
-	case FB_BLANK_POWERDOWN:
-		if (!vinfo->pipe_disabled) {
-			vmlfb_disable_pipe(vinfo);
-		}
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int vmlfb_blank(int blank_mode, struct fb_info *info)
-{
-	struct vml_info *vinfo = container_of(info, struct vml_info, info);
-	int ret;
-
-	mutex_lock(&vml_mutex);
-	vinfo->cur_blank_mode = blank_mode;
-	ret = vmlfb_blank_locked(vinfo);
-	mutex_unlock(&vml_mutex);
-	return ret;
-}
-
-static int vmlfb_pan_display(struct fb_var_screeninfo *var,
-			     struct fb_info *info)
-{
-	struct vml_info *vinfo = container_of(info, struct vml_info, info);
-	struct vml_par *par = vinfo->par;
-
-	mutex_lock(&vml_mutex);
-	VML_WRITE32(par, VML_DSPCADDR, (u32) vinfo->vram_start +
-		    var->yoffset * vinfo->stride +
-		    var->xoffset * vinfo->bytes_per_pixel);
-	(void)VML_READ32(par, VML_DSPCADDR);
-	mutex_unlock(&vml_mutex);
-
-	return 0;
-}
-
-static int vmlfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
-			   u_int transp, struct fb_info *info)
-{
-	u32 v;
-
-	if (regno >= 16)
-		return -EINVAL;
-
-	if (info->var.grayscale) {
-		red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
-	}
-
-	if (info->fix.visual != FB_VISUAL_TRUECOLOR)
-		return -EINVAL;
-
-	red = VML_TOHW(red, info->var.red.length);
-	blue = VML_TOHW(blue, info->var.blue.length);
-	green = VML_TOHW(green, info->var.green.length);
-	transp = VML_TOHW(transp, info->var.transp.length);
-
-	v = (red << info->var.red.offset) |
-	    (green << info->var.green.offset) |
-	    (blue << info->var.blue.offset) |
-	    (transp << info->var.transp.offset);
-
-	switch (info->var.bits_per_pixel) {
-	case 16:
-		((u32 *) info->pseudo_palette)[regno] = v;
-		break;
-	case 24:
-	case 32:
-		((u32 *) info->pseudo_palette)[regno] = v;
-		break;
-	}
-	return 0;
-}
-
-static int vmlfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
-{
-	struct vml_info *vinfo = container_of(info, struct vml_info, info);
-	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-	int ret;
-	unsigned long prot;
-
-	ret = vmlfb_vram_offset(vinfo, offset);
-	if (ret)
-		return -EINVAL;
-
-	prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK;
-	pgprot_val(vma->vm_page_prot) =
-		prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
-
-	return vm_iomap_memory(vma, vinfo->vram_start,
-			vinfo->vram_contig_size);
-}
-
-static int vmlfb_sync(struct fb_info *info)
-{
-	return 0;
-}
-
-static int vmlfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
-{
-	return -EINVAL;	/* just to force soft_cursor() call */
-}
-
-static struct fb_ops vmlfb_ops = {
-	.owner = THIS_MODULE,
-	.fb_open = vmlfb_open,
-	.fb_release = vmlfb_release,
-	__FB_DEFAULT_IOMEM_OPS_RDWR,
-	.fb_check_var = vmlfb_check_var,
-	.fb_set_par = vmlfb_set_par,
-	.fb_blank = vmlfb_blank,
-	.fb_pan_display = vmlfb_pan_display,
-	__FB_DEFAULT_IOMEM_OPS_DRAW,
-	.fb_cursor = vmlfb_cursor,
-	.fb_sync = vmlfb_sync,
-	.fb_mmap = vmlfb_mmap,
-	.fb_setcolreg = vmlfb_setcolreg
-};
-
-static const struct pci_device_id vml_ids[] = {
-	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, VML_DEVICE_VDC)},
-	{0}
-};
-
-static struct pci_driver vmlfb_pci_driver = {
-	.name = "vmlfb",
-	.id_table = vml_ids,
-	.probe = vml_pci_probe,
-	.remove = vml_pci_remove,
-};
-
-static void __exit vmlfb_cleanup(void)
-{
-	pci_unregister_driver(&vmlfb_pci_driver);
-}
-
-static int __init vmlfb_init(void)
-{
-
-#ifndef MODULE
-	char *option = NULL;
-#endif
-
-	if (fb_modesetting_disabled("vmlfb"))
-		return -ENODEV;
-
-#ifndef MODULE
-	if (fb_get_options(MODULE_NAME, &option))
-		return -ENODEV;
-#endif
-
-	printk(KERN_DEBUG MODULE_NAME ": initializing\n");
-	mutex_init(&vml_mutex);
-	INIT_LIST_HEAD(&global_no_mode);
-	INIT_LIST_HEAD(&global_has_mode);
-
-	return pci_register_driver(&vmlfb_pci_driver);
-}
-
-int vmlfb_register_subsys(struct vml_sys *sys)
-{
-	struct vml_info *entry;
-	struct list_head *list;
-	u32 save_activate;
-
-	mutex_lock(&vml_mutex);
-	if (subsys != NULL) {
-		subsys->restore(subsys);
-	}
-	subsys = sys;
-	subsys->save(subsys);
-
-	/*
-	 * We need to restart list traversal for each item, since we
-	 * release the list mutex in the loop.
-	 */
-
-	list = global_no_mode.next;
-	while (list != &global_no_mode) {
-		list_del_init(list);
-		entry = list_entry(list, struct vml_info, head);
-
-		/*
-		 * First, try the current mode which might not be
-		 * completely validated with respect to the pixel clock.
-		 */
-
-		if (!vmlfb_check_var_locked(&entry->info.var, entry)) {
-			vmlfb_set_par_locked(entry);
-			list_add_tail(list, &global_has_mode);
-		} else {
-
-			/*
-			 * Didn't work. Try to find another mode,
-			 * that matches this subsys.
-			 */
-
-			mutex_unlock(&vml_mutex);
-			save_activate = entry->info.var.activate;
-			entry->info.var.bits_per_pixel = 16;
-			vmlfb_set_pref_pixel_format(&entry->info.var);
-			if (fb_find_mode(&entry->info.var,
-					 &entry->info,
-					 vml_default_mode, NULL, 0, NULL, 16)) {
-				entry->info.var.activate |=
-				    FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
-				fb_set_var(&entry->info, &entry->info.var);
-			} else {
-				printk(KERN_ERR MODULE_NAME
-				       ": Sorry. no mode found for this subsys.\n");
-			}
-			entry->info.var.activate = save_activate;
-			mutex_lock(&vml_mutex);
-		}
-		vmlfb_blank_locked(entry);
-		list = global_no_mode.next;
-	}
-	mutex_unlock(&vml_mutex);
-
-	printk(KERN_DEBUG MODULE_NAME ": Registered %s subsystem.\n",
-				subsys->name ? subsys->name : "unknown");
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(vmlfb_register_subsys);
-
-void vmlfb_unregister_subsys(struct vml_sys *sys)
-{
-	struct vml_info *entry, *next;
-
-	mutex_lock(&vml_mutex);
-	if (subsys != sys) {
-		mutex_unlock(&vml_mutex);
-		return;
-	}
-	subsys->restore(subsys);
-	subsys = NULL;
-	list_for_each_entry_safe(entry, next, &global_has_mode, head) {
-		printk(KERN_DEBUG MODULE_NAME ": subsys disable pipe\n");
-		vmlfb_disable_pipe(entry);
-		list_move_tail(&entry->head, &global_no_mode);
-	}
-	mutex_unlock(&vml_mutex);
-}
-
-EXPORT_SYMBOL_GPL(vmlfb_unregister_subsys);
-
-module_init(vmlfb_init);
-module_exit(vmlfb_cleanup);
-
-MODULE_AUTHOR("Tungsten Graphics");
-MODULE_DESCRIPTION("Initialization of the Vermilion display devices");
-MODULE_VERSION("1.0.0");
-MODULE_LICENSE("GPL");

drivers/video/fbdev/vermilion/vermilion.h

···
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (c) Intel Corp. 2007.
- * All Rights Reserved.
- *
- * Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
- * develop this driver.
- *
- * This file is part of the Vermilion Range fb driver.
- *
- * Authors:
- *   Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-#ifndef _VERMILION_H_
-#define _VERMILION_H_
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/atomic.h>
-#include <linux/mutex.h>
-
-#define VML_DEVICE_GPU 0x5002
-#define VML_DEVICE_VDC 0x5009
-
-#define VML_VRAM_AREAS 3
-#define VML_MAX_XRES 1024
-#define VML_MAX_YRES 768
-#define VML_MAX_XRES_VIRTUAL 1040
-
-/*
- * Display controller registers:
- */
-
-/* Display controller 10-bit color representation */
-
-#define VML_R_MASK                   0x3FF00000
-#define VML_R_SHIFT                  20
-#define VML_G_MASK                   0x000FFC00
-#define VML_G_SHIFT                  10
-#define VML_B_MASK                   0x000003FF
-#define VML_B_SHIFT                  0
-
-/* Graphics plane control */
-#define VML_DSPCCNTR                 0x00072180
-#define VML_GFX_ENABLE               0x80000000
-#define VML_GFX_GAMMABYPASS          0x40000000
-#define VML_GFX_ARGB1555             0x0C000000
-#define VML_GFX_RGB0888              0x18000000
-#define VML_GFX_ARGB8888             0x1C000000
-#define VML_GFX_ALPHACONST           0x02000000
-#define VML_GFX_ALPHAMULT            0x01000000
-#define VML_GFX_CONST_ALPHA          0x000000FF
-
-/* Graphics plane start address. Pixel aligned. */
-#define VML_DSPCADDR                 0x00072184
-
-/* Graphics plane stride register. */
-#define VML_DSPCSTRIDE               0x00072188
-
-/* Graphics plane position register. */
-#define VML_DSPCPOS                  0x0007218C
-#define VML_POS_YMASK                0x0FFF0000
-#define VML_POS_YSHIFT               16
-#define VML_POS_XMASK                0x00000FFF
-#define VML_POS_XSHIFT               0
-
-/* Graphics plane height and width */
-#define VML_DSPCSIZE                 0x00072190
-#define VML_SIZE_HMASK               0x0FFF0000
-#define VML_SIZE_HSHIFT              16
-#define VML_SISE_WMASK               0x00000FFF
-#define VML_SIZE_WSHIFT              0
-
-/* Graphics plane gamma correction lookup table registers (129 * 32 bits) */
-#define VML_DSPCGAMLUT               0x00072200
-
-/* Pixel video output configuration register */
-#define VML_PVOCONFIG                0x00061140
-#define VML_CONFIG_BASE              0x80000000
-#define VML_CONFIG_PIXEL_SWAP        0x04000000
-#define VML_CONFIG_DE_INV            0x01000000
-#define VML_CONFIG_HREF_INV          0x00400000
-#define VML_CONFIG_VREF_INV          0x00100000
-#define VML_CONFIG_CLK_INV           0x00040000
-#define VML_CONFIG_CLK_DIV2          0x00010000
-#define VML_CONFIG_ESTRB_INV         0x00008000
-
-/* Pipe A Horizontal total register */
-#define VML_HTOTAL_A                 0x00060000
-#define VML_HTOTAL_MASK              0x1FFF0000
-#define VML_HTOTAL_SHIFT             16
-#define VML_HTOTAL_VAL               8192
-#define VML_HACTIVE_MASK             0x000007FF
-#define VML_HACTIVE_SHIFT            0
-#define VML_HACTIVE_VAL              4096
-
-/* Pipe A Horizontal Blank register */
-#define VML_HBLANK_A                 0x00060004
-#define VML_HBLANK_END_MASK          0x1FFF0000
-#define VML_HBLANK_END_SHIFT         16
-#define VML_HBLANK_END_VAL           8192
-#define VML_HBLANK_START_MASK        0x00001FFF
-#define VML_HBLANK_START_SHIFT       0
-#define VML_HBLANK_START_VAL         8192
-
-/* Pipe A Horizontal Sync register */
-#define VML_HSYNC_A                  0x00060008
-#define VML_HSYNC_END_MASK           0x1FFF0000
-#define VML_HSYNC_END_SHIFT          16
-#define VML_HSYNC_END_VAL            8192
-#define VML_HSYNC_START_MASK         0x00001FFF
-#define VML_HSYNC_START_SHIFT        0
-#define VML_HSYNC_START_VAL          8192
-
-/* Pipe A Vertical total register */
-#define VML_VTOTAL_A                 0x0006000C
-#define VML_VTOTAL_MASK              0x1FFF0000
-#define VML_VTOTAL_SHIFT             16
-#define VML_VTOTAL_VAL               8192
-#define VML_VACTIVE_MASK             0x000007FF
-#define VML_VACTIVE_SHIFT            0
-#define VML_VACTIVE_VAL              4096
-
-/* Pipe A Vertical Blank register */
-#define VML_VBLANK_A                 0x00060010
-#define VML_VBLANK_END_MASK          0x1FFF0000
-#define VML_VBLANK_END_SHIFT         16
-#define VML_VBLANK_END_VAL           8192
-#define VML_VBLANK_START_MASK        0x00001FFF
-#define VML_VBLANK_START_SHIFT       0
-#define VML_VBLANK_START_VAL         8192
-
-/* Pipe A Vertical Sync register */
-#define VML_VSYNC_A                  0x00060014
-#define VML_VSYNC_END_MASK           0x1FFF0000
-#define VML_VSYNC_END_SHIFT          16
-#define VML_VSYNC_END_VAL            8192
-#define VML_VSYNC_START_MASK         0x00001FFF
-#define VML_VSYNC_START_SHIFT        0
-#define VML_VSYNC_START_VAL          8192
-
-/* Pipe A Source Image size (minus one - equal to active size)
- * Programmable while pipe is enabled.
- */
-#define VML_PIPEASRC                 0x0006001C
-#define VML_PIPEASRC_HMASK           0x0FFF0000
-#define VML_PIPEASRC_HSHIFT          16
-#define VML_PIPEASRC_VMASK           0x00000FFF
-#define VML_PIPEASRC_VSHIFT          0
-
-/* Pipe A Border Color Pattern register (10 bit color) */
-#define VML_BCLRPAT_A                0x00060020
-
-/* Pipe A Canvas Color register  (10 bit color) */
-#define VML_CANVSCLR_A               0x00060024
-
-/* Pipe A Configuration register */
-#define VML_PIPEACONF                0x00070008
-#define VML_PIPE_BASE                0x00000000
-#define VML_PIPE_ENABLE              0x80000000
-#define VML_PIPE_FORCE_BORDER        0x02000000
-#define VML_PIPE_PLANES_OFF          0x00080000
-#define VML_PIPE_ARGB_OUTPUT_MODE    0x00040000
-
-/* Pipe A FIFO setting */
-#define VML_DSPARB                   0x00070030
-#define VML_FIFO_DEFAULT             0x00001D9C
-
-/* MDVO rcomp status & pads control register */
-#define VML_RCOMPSTAT                0x00070048
-#define VML_MDVO_VDC_I_RCOMP         0x80000000
-#define VML_MDVO_POWERSAVE_OFF       0x00000008
-#define VML_MDVO_PAD_ENABLE          0x00000004
-#define VML_MDVO_PULLDOWN_ENABLE     0x00000001
-
-struct vml_par {
-	struct pci_dev *vdc;
-	u64 vdc_mem_base;
-	u64 vdc_mem_size;
-	char __iomem *vdc_mem;
-
-	struct pci_dev *gpu;
-	u64 gpu_mem_base;
-	u64 gpu_mem_size;
-	char __iomem *gpu_mem;
-
-	atomic_t refcount;
-};
-
-struct vram_area {
-	unsigned long logical;
-	unsigned long phys;
-	unsigned long size;
-	unsigned order;
-};
-
-struct vml_info {
-	struct fb_info info;
-	struct vml_par *par;
-	struct list_head head;
-	struct vram_area vram[VML_VRAM_AREAS];
-	u64 vram_start;
-	u64 vram_contig_size;
-	u32 num_areas;
-	void __iomem *vram_logical;
-	u32 pseudo_palette[16];
-	u32 stride;
-	u32 bytes_per_pixel;
-	atomic_t vmas;
-	int cur_blank_mode;
-	int pipe_disabled;
-};
-
-/*
- * Subsystem
- */
-
-struct vml_sys {
-	char *name;
-
-	/*
-	 * Save / Restore;
-	 */
-
-	int (*save) (struct vml_sys * sys);
-	int (*restore) (struct vml_sys * sys);
-
-	/*
-	 * PLL programming;
-	 */
-
-	int (*set_clock) (struct vml_sys * sys, int clock);
-	int (*nearest_clock) (const struct vml_sys * sys, int clock);
-};
-
-extern int vmlfb_register_subsys(struct vml_sys *sys);
-extern void vmlfb_unregister_subsys(struct vml_sys *sys);
-
-#define VML_READ32(_par, _offset) \
-	(ioread32((_par)->vdc_mem + (_offset)))
-#define VML_WRITE32(_par, _offset, _value)				\
-	iowrite32(_value, (_par)->vdc_mem + (_offset))
-
-#endif