Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

16 files changed, 4829 insertions, 0 deletions

diff --git a/drivers/video/fbdev/geode/Kconfig b/drivers/video/fbdev/geode/Kconfig
new file mode 100644
index 000000000..85bc14b6f
--- /dev/null
+++ b/drivers/video/fbdev/geode/Kconfig
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Geode family framebuffer configuration
+#
+config FB_GEODE
+	bool "AMD Geode family framebuffer support"
+	depends on FB && PCI && (X86_32 || (X86 && COMPILE_TEST))
+	depends on !UML
+	help
+	  Say 'Y' here to allow you to select framebuffer drivers for
+	  the AMD Geode family of processors.
+
+config FB_GEODE_LX
+	tristate "AMD Geode LX framebuffer support"
+	depends on FB && FB_GEODE
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  Framebuffer driver for the display controller integrated into the
+	  AMD Geode LX processors.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called lxfb.
+
+	  If unsure, say N.
+
+config FB_GEODE_GX
+	tristate "AMD Geode GX framebuffer support"
+	depends on FB && FB_GEODE
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  Framebuffer driver for the display controller integrated into the
+	  AMD Geode GX processors.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called gxfb.
+
+	  If unsure, say N.
+
+config FB_GEODE_GX1
+	tristate "AMD Geode GX1 framebuffer support"
+	depends on FB && FB_GEODE
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	help
+	  Framebuffer driver for the display controller integrated into the
+	  AMD Geode GX1 processor.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called gx1fb.
+
+	  If unsure, say N.
diff --git a/drivers/video/fbdev/geode/Makefile b/drivers/video/fbdev/geode/Makefile
new file mode 100644
index 000000000..16ba8a71d
--- /dev/null
+++ b/drivers/video/fbdev/geode/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for the Geode family framebuffer drivers
+
+obj-$(CONFIG_FB_GEODE_GX1) += gx1fb.o
+obj-$(CONFIG_FB_GEODE_GX)  += gxfb.o
+obj-$(CONFIG_FB_GEODE_LX)  += lxfb.o
+
+gx1fb-objs := gx1fb_core.o display_gx1.o video_cs5530.o
+gxfb-objs  := gxfb_core.o display_gx.o video_gx.o suspend_gx.o
+lxfb-objs  := lxfb_core.o lxfb_ops.o
diff --git a/drivers/video/fbdev/geode/display_gx.c b/drivers/video/fbdev/geode/display_gx.c
new file mode 100644
index 000000000..b5f25dffd
--- /dev/null
+++ b/drivers/video/fbdev/geode/display_gx.c
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Geode GX display controller.
+ *
+ *   Copyright (C) 2005 Arcom Control Systems Ltd.
+ *
+ *   Portions from AMD's original 2.4 driver:
+ *     Copyright (C) 2004 Advanced Micro Devices, Inc.
+ */
+#include <linux/spinlock.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/div64.h>
+#include <asm/delay.h>
+#include <linux/cs5535.h>
+
+#include "gxfb.h"
+
+unsigned int gx_frame_buffer_size(void)
+{
+	unsigned int val;
+
+	if (!cs5535_has_vsa2()) {
+		uint32_t hi, lo;
+
+		/* The number of pages is (PMAX - PMIN)+1 */
+		rdmsr(MSR_GLIU_P2D_RO0, lo, hi);
+
+		/* PMAX */
+		val = ((hi & 0xff) << 12) | ((lo & 0xfff00000) >> 20);
+		/* PMIN */
+		val -= (lo & 0x000fffff);
+		val += 1;
+
+		/* The page size is 4k */
+		return (val << 12);
+	}
+
+	/* FB size can be obtained from the VSA II */
+	/* Virtual register class = 0x02 */
+	/* VG_MEM_SIZE(512Kb units) = 0x00 */
+
+	outw(VSA_VR_UNLOCK, VSA_VRC_INDEX);
+	outw(VSA_VR_MEM_SIZE, VSA_VRC_INDEX);
+
+	val = (unsigned int)(inw(VSA_VRC_DATA)) & 0xFFl;
+	return (val << 19);
+}
+
+int gx_line_delta(int xres, int bpp)
+{
+	/* Must be a multiple of 8 bytes. */
+	return (xres * (bpp >> 3) + 7) & ~0x7;
+}
+
+void gx_set_mode(struct fb_info *info)
+{
+	struct gxfb_par *par = info->par;
+	u32 gcfg, dcfg;
+	int hactive, hblankstart, hsyncstart, hsyncend, hblankend, htotal;
+	int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
+
+	/* Unlock the display controller registers. */
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
+
+	gcfg = read_dc(par, DC_GENERAL_CFG);
+	dcfg = read_dc(par, DC_DISPLAY_CFG);
+
+	/* Disable the timing generator. */
+	dcfg &= ~DC_DISPLAY_CFG_TGEN;
+	write_dc(par, DC_DISPLAY_CFG, dcfg);
+
+	/* Wait for pending memory requests before disabling the FIFO load. */
+	udelay(100);
+
+	/* Disable FIFO load and compression. */
+	gcfg &= ~(DC_GENERAL_CFG_DFLE | DC_GENERAL_CFG_CMPE |
+			DC_GENERAL_CFG_DECE);
+	write_dc(par, DC_GENERAL_CFG, gcfg);
+
+	/* Setup DCLK and its divisor. */
+	gx_set_dclk_frequency(info);
+
+	/*
+	 * Setup new mode.
+	 */
+
+	/* Clear all unused feature bits. */
+	gcfg &= DC_GENERAL_CFG_YUVM | DC_GENERAL_CFG_VDSE;
+	dcfg = 0;
+
+	/* Set FIFO priority (default 6/5) and enable. */
+	/* FIXME: increase fifo priority for 1280x1024 and higher modes? */
+	gcfg |= (6 << DC_GENERAL_CFG_DFHPEL_SHIFT) |
+		(5 << DC_GENERAL_CFG_DFHPSL_SHIFT) | DC_GENERAL_CFG_DFLE;
+
+	/* Framebuffer start offset. */
+	write_dc(par, DC_FB_ST_OFFSET, 0);
+
+	/* Line delta and line buffer length. */
+	write_dc(par, DC_GFX_PITCH, info->fix.line_length >> 3);
+	write_dc(par, DC_LINE_SIZE,
+		((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2);
+
+
+	/* Enable graphics and video data and unmask address lines. */
+	dcfg |= DC_DISPLAY_CFG_GDEN | DC_DISPLAY_CFG_VDEN |
+		DC_DISPLAY_CFG_A20M | DC_DISPLAY_CFG_A18M;
+
+	/* Set pixel format. */
+	switch (info->var.bits_per_pixel) {
+	case 8:
+		dcfg |= DC_DISPLAY_CFG_DISP_MODE_8BPP;
+		break;
+	case 16:
+		dcfg |= DC_DISPLAY_CFG_DISP_MODE_16BPP;
+		break;
+	case 32:
+		dcfg |= DC_DISPLAY_CFG_DISP_MODE_24BPP;
+		dcfg |= DC_DISPLAY_CFG_PALB;
+		break;
+	}
+
+	/* Enable timing generator. */
+	dcfg |= DC_DISPLAY_CFG_TGEN;
+
+	/* Horizontal and vertical timings. */
+	hactive = info->var.xres;
+	hblankstart = hactive;
+	hsyncstart = hblankstart + info->var.right_margin;
+	hsyncend =  hsyncstart + info->var.hsync_len;
+	hblankend = hsyncend + info->var.left_margin;
+	htotal = hblankend;
+
+	vactive = info->var.yres;
+	vblankstart = vactive;
+	vsyncstart = vblankstart + info->var.lower_margin;
+	vsyncend =  vsyncstart + info->var.vsync_len;
+	vblankend = vsyncend + info->var.upper_margin;
+	vtotal = vblankend;
+
+	write_dc(par, DC_H_ACTIVE_TIMING, (hactive - 1)    |
+			((htotal - 1) << 16));
+	write_dc(par, DC_H_BLANK_TIMING, (hblankstart - 1) |
+			((hblankend - 1) << 16));
+	write_dc(par, DC_H_SYNC_TIMING, (hsyncstart - 1)   |
+			((hsyncend - 1) << 16));
+
+	write_dc(par, DC_V_ACTIVE_TIMING, (vactive - 1)    |
+			((vtotal - 1) << 16));
+	write_dc(par, DC_V_BLANK_TIMING, (vblankstart - 1) |
+			((vblankend - 1) << 16));
+	write_dc(par, DC_V_SYNC_TIMING, (vsyncstart - 1)   |
+			((vsyncend - 1) << 16));
+
+	/* Write final register values. */
+	write_dc(par, DC_DISPLAY_CFG, dcfg);
+	write_dc(par, DC_GENERAL_CFG, gcfg);
+
+	gx_configure_display(info);
+
+	/* Relock display controller registers */
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
+}
+
+void gx_set_hw_palette_reg(struct fb_info *info, unsigned regno,
+		unsigned red, unsigned green, unsigned blue)
+{
+	struct gxfb_par *par = info->par;
+	int val;
+
+	/* Hardware palette is in RGB 8-8-8 format. */
+	val  = (red   << 8) & 0xff0000;
+	val |= (green)      & 0x00ff00;
+	val |= (blue  >> 8) & 0x0000ff;
+
+	write_dc(par, DC_PAL_ADDRESS, regno);
+	write_dc(par, DC_PAL_DATA, val);
+}
diff --git a/drivers/video/fbdev/geode/display_gx1.c b/drivers/video/fbdev/geode/display_gx1.c
new file mode 100644
index 000000000..f5c4ef177
--- /dev/null
+++ b/drivers/video/fbdev/geode/display_gx1.c
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * drivers/video/geode/display_gx1.c
+ *   -- Geode GX1 display controller
+ *
+ * Copyright (C) 2005 Arcom Control Systems Ltd.
+ *
+ * Based on AMD's original 2.4 driver:
+ *   Copyright (C) 2004 Advanced Micro Devices, Inc.
+ */
+#include <linux/spinlock.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/div64.h>
+#include <asm/delay.h>
+
+#include "geodefb.h"
+#include "display_gx1.h"
+
+static DEFINE_SPINLOCK(gx1_conf_reg_lock);
+
+static u8 gx1_read_conf_reg(u8 reg)
+{
+	u8 val, ccr3;
+	unsigned long flags;
+
+	spin_lock_irqsave(&gx1_conf_reg_lock, flags);
+
+	outb(CONFIG_CCR3, 0x22);
+	ccr3 = inb(0x23);
+	outb(CONFIG_CCR3, 0x22);
+	outb(ccr3 | CONFIG_CCR3_MAPEN, 0x23);
+	outb(reg, 0x22);
+	val = inb(0x23);
+	outb(CONFIG_CCR3, 0x22);
+	outb(ccr3, 0x23);
+
+	spin_unlock_irqrestore(&gx1_conf_reg_lock, flags);
+
+	return val;
+}
+
+unsigned gx1_gx_base(void)
+{
+	return (gx1_read_conf_reg(CONFIG_GCR) & 0x03) << 30;
+}
+
+int gx1_frame_buffer_size(void)
+{
+	void __iomem *mc_regs;
+	u32 bank_cfg;
+	int d;
+	unsigned dram_size = 0, fb_base;
+
+	mc_regs = ioremap(gx1_gx_base() + 0x8400, 0x100);
+	if (!mc_regs)
+		return -ENOMEM;
+
+
+	/* Calculate the total size of both DIMM0 and DIMM1. */
+	bank_cfg = readl(mc_regs + MC_BANK_CFG);
+
+	for (d = 0; d < 2; d++) {
+		if ((bank_cfg & MC_BCFG_DIMM0_PG_SZ_MASK) != MC_BCFG_DIMM0_PG_SZ_NO_DIMM)
+			dram_size += 0x400000 << ((bank_cfg & MC_BCFG_DIMM0_SZ_MASK) >> 8);
+		bank_cfg >>= 16; /* look at DIMM1 next */
+	}
+
+	fb_base = (readl(mc_regs + MC_GBASE_ADD) & MC_GADD_GBADD_MASK) << 19;
+
+	iounmap(mc_regs);
+
+	return dram_size - fb_base;
+}
+
+static void gx1_set_mode(struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+	u32 gcfg, tcfg, ocfg, dclk_div, val;
+	int hactive, hblankstart, hsyncstart, hsyncend, hblankend, htotal;
+	int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
+
+	/* Unlock the display controller registers. */
+	readl(par->dc_regs + DC_UNLOCK);
+	writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK);
+
+	gcfg = readl(par->dc_regs + DC_GENERAL_CFG);
+	tcfg = readl(par->dc_regs + DC_TIMING_CFG);
+
+	/* Blank the display and disable the timing generator. */
+	tcfg &= ~(DC_TCFG_BLKE | DC_TCFG_TGEN);
+	writel(tcfg, par->dc_regs + DC_TIMING_CFG);
+
+	/* Wait for pending memory requests before disabling the FIFO load. */
+	udelay(100);
+
+	/* Disable FIFO load and compression. */
+	gcfg &= ~(DC_GCFG_DFLE | DC_GCFG_CMPE | DC_GCFG_DECE);
+	writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+
+	/* Setup DCLK and its divisor. */
+	gcfg &= ~DC_GCFG_DCLK_MASK;
+	writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+
+	par->vid_ops->set_dclk(info);
+
+	dclk_div = DC_GCFG_DCLK_DIV_1; /* FIXME: may need to divide DCLK by 2 sometimes? */
+	gcfg |= dclk_div;
+	writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+
+	/* Wait for the clock generatation to settle.  This is needed since
+	 * some of the register writes that follow require that clock to be
+	 * present. */
+	udelay(1000); /* FIXME: seems a little long */
+
+	/*
+	 * Setup new mode.
+	 */
+
+	/* Clear all unused feature bits. */
+	gcfg = DC_GCFG_VRDY | dclk_div;
+
+	/* Set FIFO priority (default 6/5) and enable. */
+	/* FIXME: increase fifo priority for 1280x1024 modes? */
+	gcfg |= (6 << DC_GCFG_DFHPEL_POS) | (5 << DC_GCFG_DFHPSL_POS) | DC_GCFG_DFLE;
+
+	/* FIXME: Set pixel and line double bits if necessary. */
+
+	/* Framebuffer start offset. */
+	writel(0, par->dc_regs + DC_FB_ST_OFFSET);
+
+	/* Line delta and line buffer length. */
+	writel(info->fix.line_length >> 2, par->dc_regs + DC_LINE_DELTA);
+	writel(((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2,
+	       par->dc_regs + DC_BUF_SIZE);
+
+	/* Output configuration. Enable panel data, set pixel format. */
+	ocfg = DC_OCFG_PCKE | DC_OCFG_PDEL | DC_OCFG_PDEH;
+	if (info->var.bits_per_pixel == 8) ocfg |= DC_OCFG_8BPP;
+
+	/* Enable timing generator, sync and FP data. */
+	tcfg = DC_TCFG_FPPE | DC_TCFG_HSYE | DC_TCFG_VSYE | DC_TCFG_BLKE
+		| DC_TCFG_TGEN;
+
+	/* Horizontal and vertical timings. */
+	hactive = info->var.xres;
+	hblankstart = hactive;
+	hsyncstart = hblankstart + info->var.right_margin;
+	hsyncend =  hsyncstart + info->var.hsync_len;
+	hblankend = hsyncend + info->var.left_margin;
+	htotal = hblankend;
+
+	vactive = info->var.yres;
+	vblankstart = vactive;
+	vsyncstart = vblankstart + info->var.lower_margin;
+	vsyncend =  vsyncstart + info->var.vsync_len;
+	vblankend = vsyncend + info->var.upper_margin;
+	vtotal = vblankend;
+
+	val = (hactive - 1) | ((htotal - 1) << 16);
+	writel(val, par->dc_regs + DC_H_TIMING_1);
+	val = (hblankstart - 1) | ((hblankend - 1) << 16);
+	writel(val, par->dc_regs + DC_H_TIMING_2);
+	val = (hsyncstart - 1) | ((hsyncend - 1) << 16);
+	writel(val, par->dc_regs + DC_H_TIMING_3);
+	writel(val, par->dc_regs + DC_FP_H_TIMING);
+	val = (vactive - 1) | ((vtotal - 1) << 16);
+	writel(val, par->dc_regs + DC_V_TIMING_1);
+	val = (vblankstart - 1) | ((vblankend - 1) << 16);
+	writel(val, par->dc_regs + DC_V_TIMING_2);
+	val = (vsyncstart - 1) | ((vsyncend - 1) << 16);
+	writel(val, par->dc_regs + DC_V_TIMING_3);
+	val = (vsyncstart - 2) | ((vsyncend - 2) << 16);
+	writel(val, par->dc_regs + DC_FP_V_TIMING);
+
+	/* Write final register values. */
+	writel(ocfg, par->dc_regs + DC_OUTPUT_CFG);
+	writel(tcfg, par->dc_regs + DC_TIMING_CFG);
+	udelay(1000); /* delay after TIMING_CFG. FIXME: perhaps a little long */
+	writel(gcfg, par->dc_regs + DC_GENERAL_CFG);
+
+	par->vid_ops->configure_display(info);
+
+	/* Relock display controller registers */
+	writel(0, par->dc_regs + DC_UNLOCK);
+
+	/* FIXME: write line_length and bpp to Graphics Pipeline GP_BLT_STATUS
+	 * register. */
+}
+
+static void gx1_set_hw_palette_reg(struct fb_info *info, unsigned regno,
+				   unsigned red, unsigned green, unsigned blue)
+{
+	struct geodefb_par *par = info->par;
+	int val;
+
+	/* Hardware palette is in RGB 6-6-6 format. */
+	val  = (red   <<  2) & 0x3f000;
+	val |= (green >>  4) & 0x00fc0;
+	val |= (blue  >> 10) & 0x0003f;
+
+	writel(regno, par->dc_regs + DC_PAL_ADDRESS);
+	writel(val, par->dc_regs + DC_PAL_DATA);
+}
+
+const struct geode_dc_ops gx1_dc_ops = {
+	.set_mode	 = gx1_set_mode,
+	.set_palette_reg = gx1_set_hw_palette_reg,
+};
diff --git a/drivers/video/fbdev/geode/display_gx1.h b/drivers/video/fbdev/geode/display_gx1.h
new file mode 100644
index 000000000..61370b30f
--- /dev/null
+++ b/drivers/video/fbdev/geode/display_gx1.h
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * drivers/video/geode/display_gx1.h
+ *   -- Geode GX1 display controller
+ *
+ * Copyright (C) 2005 Arcom Control Systems Ltd.
+ *
+ * Based on AMD's original 2.4 driver:
+ *   Copyright (C) 2004 Advanced Micro Devices, Inc.
+ */
+#ifndef __DISPLAY_GX1_H__
+#define __DISPLAY_GX1_H__
+
+unsigned gx1_gx_base(void);
+int gx1_frame_buffer_size(void);
+
+extern const struct geode_dc_ops gx1_dc_ops;
+
+/* GX1 configuration I/O registers */
+
+#define CONFIG_CCR3 0xc3
+#  define CONFIG_CCR3_MAPEN 0x10
+#define CONFIG_GCR  0xb8
+
+/* Memory controller registers */
+
+#define MC_BANK_CFG		0x08
+#  define MC_BCFG_DIMM0_SZ_MASK		0x00000700
+#  define MC_BCFG_DIMM0_PG_SZ_MASK	0x00000070
+#  define MC_BCFG_DIMM0_PG_SZ_NO_DIMM	0x00000070
+
+#define MC_GBASE_ADD		0x14
+#  define MC_GADD_GBADD_MASK		0x000003ff
+
+/* Display controller registers */
+
+#define DC_PAL_ADDRESS		0x70
+#define DC_PAL_DATA		0x74
+
+#define DC_UNLOCK		0x00
+#  define DC_UNLOCK_CODE		0x00004758
+
+#define DC_GENERAL_CFG		0x04
+#  define DC_GCFG_DFLE			0x00000001
+#  define DC_GCFG_CURE			0x00000002
+#  define DC_GCFG_VCLK_DIV		0x00000004
+#  define DC_GCFG_PLNO			0x00000004
+#  define DC_GCFG_PPC			0x00000008
+#  define DC_GCFG_CMPE			0x00000010
+#  define DC_GCFG_DECE			0x00000020
+#  define DC_GCFG_DCLK_MASK		0x000000C0
+#  define DC_GCFG_DCLK_DIV_1		0x00000080
+#  define DC_GCFG_DFHPSL_MASK		0x00000F00
+#  define DC_GCFG_DFHPSL_POS			 8
+#  define DC_GCFG_DFHPEL_MASK		0x0000F000
+#  define DC_GCFG_DFHPEL_POS			12
+#  define DC_GCFG_CIM_MASK		0x00030000
+#  define DC_GCFG_CIM_POS			16
+#  define DC_GCFG_FDTY			0x00040000
+#  define DC_GCFG_RTPM			0x00080000
+#  define DC_GCFG_DAC_RS_MASK		0x00700000
+#  define DC_GCFG_DAC_RS_POS			20
+#  define DC_GCFG_CKWR			0x00800000
+#  define DC_GCFG_LDBL			0x01000000
+#  define DC_GCFG_DIAG			0x02000000
+#  define DC_GCFG_CH4S			0x04000000
+#  define DC_GCFG_SSLC			0x08000000
+#  define DC_GCFG_VIDE			0x10000000
+#  define DC_GCFG_VRDY			0x20000000
+#  define DC_GCFG_DPCK			0x40000000
+#  define DC_GCFG_DDCK			0x80000000
+
+#define DC_TIMING_CFG		0x08
+#  define DC_TCFG_FPPE			0x00000001
+#  define DC_TCFG_HSYE			0x00000002
+#  define DC_TCFG_VSYE			0x00000004
+#  define DC_TCFG_BLKE			0x00000008
+#  define DC_TCFG_DDCK			0x00000010
+#  define DC_TCFG_TGEN			0x00000020
+#  define DC_TCFG_VIEN			0x00000040
+#  define DC_TCFG_BLNK			0x00000080
+#  define DC_TCFG_CHSP			0x00000100
+#  define DC_TCFG_CVSP			0x00000200
+#  define DC_TCFG_FHSP			0x00000400
+#  define DC_TCFG_FVSP			0x00000800
+#  define DC_TCFG_FCEN			0x00001000
+#  define DC_TCFG_CDCE			0x00002000
+#  define DC_TCFG_PLNR			0x00002000
+#  define DC_TCFG_INTL			0x00004000
+#  define DC_TCFG_PXDB			0x00008000
+#  define DC_TCFG_BKRT			0x00010000
+#  define DC_TCFG_PSD_MASK		0x000E0000
+#  define DC_TCFG_PSD_POS			17
+#  define DC_TCFG_DDCI			0x08000000
+#  define DC_TCFG_SENS			0x10000000
+#  define DC_TCFG_DNA			0x20000000
+#  define DC_TCFG_VNA			0x40000000
+#  define DC_TCFG_VINT			0x80000000
+
+#define DC_OUTPUT_CFG		0x0C
+#  define DC_OCFG_8BPP			0x00000001
+#  define DC_OCFG_555			0x00000002
+#  define DC_OCFG_PCKE			0x00000004
+#  define DC_OCFG_FRME			0x00000008
+#  define DC_OCFG_DITE			0x00000010
+#  define DC_OCFG_2PXE			0x00000020
+#  define DC_OCFG_2XCK			0x00000040
+#  define DC_OCFG_2IND			0x00000080
+#  define DC_OCFG_34ADD			0x00000100
+#  define DC_OCFG_FRMS			0x00000200
+#  define DC_OCFG_CKSL			0x00000400
+#  define DC_OCFG_PRMP			0x00000800
+#  define DC_OCFG_PDEL			0x00001000
+#  define DC_OCFG_PDEH			0x00002000
+#  define DC_OCFG_CFRW			0x00004000
+#  define DC_OCFG_DIAG			0x00008000
+
+#define DC_FB_ST_OFFSET		0x10
+#define DC_CB_ST_OFFSET		0x14
+#define DC_CURS_ST_OFFSET	0x18
+#define DC_ICON_ST_OFFSET	0x1C
+#define DC_VID_ST_OFFSET	0x20
+#define DC_LINE_DELTA		0x24
+#define DC_BUF_SIZE		0x28
+
+#define DC_H_TIMING_1		0x30
+#define DC_H_TIMING_2		0x34
+#define DC_H_TIMING_3		0x38
+#define DC_FP_H_TIMING		0x3C
+
+#define DC_V_TIMING_1		0x40
+#define DC_V_TIMING_2		0x44
+#define DC_V_TIMING_3		0x48
+#define DC_FP_V_TIMING		0x4C
+
+#define DC_CURSOR_X		0x50
+#define DC_ICON_X		0x54
+#define DC_V_LINE_CNT		0x54
+#define DC_CURSOR_Y		0x58
+#define DC_ICON_Y		0x5C
+#define DC_SS_LINE_CMP		0x5C
+#define DC_CURSOR_COLOR		0x60
+#define DC_ICON_COLOR		0x64
+#define DC_BORDER_COLOR		0x68
+#define DC_PAL_ADDRESS		0x70
+#define DC_PAL_DATA		0x74
+#define DC_DFIFO_DIAG		0x78
+#define DC_CFIFO_DIAG		0x7C
+
+#endif /* !__DISPLAY_GX1_H__ */
diff --git a/drivers/video/fbdev/geode/geodefb.h b/drivers/video/fbdev/geode/geodefb.h
new file mode 100644
index 000000000..11937bf17
--- /dev/null
+++ b/drivers/video/fbdev/geode/geodefb.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * drivers/video/geode/geodefb.h
+ *   -- Geode framebuffer driver
+ *
+ * Copyright (C) 2005 Arcom Control Systems Ltd.
+ */
+#ifndef __GEODEFB_H__
+#define __GEODEFB_H__
+
+struct geodefb_info;
+
+struct geode_dc_ops {
+	void (*set_mode)(struct fb_info *);
+	void (*set_palette_reg)(struct fb_info *, unsigned, unsigned, unsigned, unsigned);
+};
+
+struct geode_vid_ops {
+	void (*set_dclk)(struct fb_info *);
+	void (*configure_display)(struct fb_info *);
+	int  (*blank_display)(struct fb_info *, int blank_mode);
+};
+
+struct geodefb_par {
+	int enable_crt;
+	int panel_x; /* dimensions of an attached flat panel, non-zero => enable panel */
+	int panel_y;
+	void __iomem *dc_regs;
+	void __iomem *vid_regs;
+	const struct geode_dc_ops  *dc_ops;
+	const struct geode_vid_ops *vid_ops;
+};
+
+#endif /* !__GEODEFB_H__ */
diff --git a/drivers/video/fbdev/geode/gx1fb_core.c b/drivers/video/fbdev/geode/gx1fb_core.c
new file mode 100644
index 000000000..1514c653a
--- /dev/null
+++ b/drivers/video/fbdev/geode/gx1fb_core.c
@@ -0,0 +1,475 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * drivers/video/geode/gx1fb_core.c
+ *   -- Geode GX1 framebuffer driver
+ *
+ * Copyright (C) 2005 Arcom Control Systems Ltd.
+ */
+
+#include <linux/aperture.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include "geodefb.h"
+#include "display_gx1.h"
+#include "video_cs5530.h"
+
+static char mode_option[32] = "640x480-16@60";
+static int  crt_option = 1;
+static char panel_option[32] = "";
+
+/* Modes relevant to the GX1 (taken from modedb.c) */
+static const struct fb_videomode gx1_modedb[] = {
+	/* 640x480-60 VESA */
+	{ NULL, 60, 640, 480, 39682,  48, 16, 33, 10, 96, 2,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 640x480-75 VESA */
+	{ NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 640x480-85 VESA */
+	{ NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 800x600-60 VESA */
+	{ NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 800x600-75 VESA */
+	{ NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 800x600-85 VESA */
+	{ NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1024x768-60 VESA */
+	{ NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1024x768-75 VESA */
+	{ NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1024x768-85 VESA */
+	{ NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x960-60 VESA */
+	{ NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x960-85 VESA */
+	{ NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x1024-60 VESA */
+	{ NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x1024-75 VESA */
+	{ NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x1024-85 VESA */
+	{ NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+};
+
+static int gx1_line_delta(int xres, int bpp)
+{
+	int line_delta = xres * (bpp >> 3);
+
+	if (line_delta > 2048)
+		line_delta = 4096;
+	else if (line_delta > 1024)
+		line_delta = 2048;
+	else
+		line_delta = 1024;
+	return line_delta;
+}
+
+static int gx1fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+
+	/* Maximum resolution is 1280x1024. */
+	if (var->xres > 1280 || var->yres > 1024)
+		return -EINVAL;
+
+	if (par->panel_x && (var->xres > par->panel_x || var->yres > par->panel_y))
+		return -EINVAL;
+
+	/* Only 16 bpp and 8 bpp is supported by the hardware. */
+	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;
+		var->transp.offset = 0; var->transp.length = 0;
+	} 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;
+		var->transp.offset = 0; var->transp.length = 0;
+	} else
+		return -EINVAL;
+
+	/* Enough video memory? */
+	if (gx1_line_delta(var->xres, var->bits_per_pixel) * var->yres > info->fix.smem_len)
+		return -EINVAL;
+
+	/* FIXME: Check timing parameters here? */
+
+	return 0;
+}
+
+static int gx1fb_set_par(struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+
+	if (info->var.bits_per_pixel == 16)
+		info->fix.visual = FB_VISUAL_TRUECOLOR;
+	else
+		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+	info->fix.line_length = gx1_line_delta(info->var.xres, info->var.bits_per_pixel);
+
+	par->dc_ops->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 gx1fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			   unsigned blue, unsigned transp,
+			   struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+
+	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;
+
+		par->dc_ops->set_palette_reg(info, regno, red, green, blue);
+	}
+
+	return 0;
+}
+
+static int gx1fb_blank(int blank_mode, struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+
+	return par->vid_ops->blank_display(info, blank_mode);
+}
+
+static int gx1fb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
+{
+	struct geodefb_par *par = info->par;
+	unsigned gx_base;
+	int fb_len;
+	int ret;
+
+	gx_base = gx1_gx_base();
+	if (!gx_base)
+		return -ENODEV;
+
+	ret = pci_enable_device(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = pci_request_region(dev, 0, "gx1fb (video)");
+	if (ret < 0)
+		return ret;
+	par->vid_regs = pci_ioremap_bar(dev, 0);
+	if (!par->vid_regs)
+		return -ENOMEM;
+
+	if (!request_mem_region(gx_base + 0x8300, 0x100, "gx1fb (display controller)"))
+		return -EBUSY;
+	par->dc_regs = ioremap(gx_base + 0x8300, 0x100);
+	if (!par->dc_regs)
+		return -ENOMEM;
+
+	if ((fb_len = gx1_frame_buffer_size()) < 0)
+		return -ENOMEM;
+	info->fix.smem_start = gx_base + 0x800000;
+	info->fix.smem_len = fb_len;
+	info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
+	if (!info->screen_base)
+		return -ENOMEM;
+
+	dev_info(&dev->dev, "%d Kibyte of video memory at 0x%lx\n",
+		 info->fix.smem_len / 1024, info->fix.smem_start);
+
+	return 0;
+}
+
+static int parse_panel_option(struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+
+	if (strcmp(panel_option, "") != 0) {
+		int x, y;
+		char *s;
+		x = simple_strtol(panel_option, &s, 10);
+		if (!x)
+			return -EINVAL;
+		y = simple_strtol(s + 1, NULL, 10);
+		if (!y)
+			return -EINVAL;
+		par->panel_x = x;
+		par->panel_y = y;
+	}
+	return 0;
+}
+
+static const struct fb_ops gx1fb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_check_var	= gx1fb_check_var,
+	.fb_set_par	= gx1fb_set_par,
+	.fb_setcolreg	= gx1fb_setcolreg,
+	.fb_blank       = gx1fb_blank,
+	/* No HW acceleration for now. */
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+};
+
+static struct fb_info *gx1fb_init_fbinfo(struct device *dev)
+{
+	struct geodefb_par *par;
+	struct fb_info *info;
+
+	/* Alloc enough space for the pseudo palette. */
+	info = framebuffer_alloc(sizeof(struct geodefb_par) + sizeof(u32) * 16, dev);
+	if (!info)
+		return NULL;
+
+	par = info->par;
+
+	strcpy(info->fix.id, "GX1");
+
+	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		= &gx1fb_ops;
+	info->flags		= FBINFO_DEFAULT;
+	info->node		= -1;
+
+	info->pseudo_palette	= (void *)par + sizeof(struct geodefb_par);
+
+	info->var.grayscale	= 0;
+
+	/* CRT and panel options */
+	par->enable_crt = crt_option;
+	if (parse_panel_option(info) < 0)
+		printk(KERN_WARNING "gx1fb: invalid 'panel' option -- disabling flat panel\n");
+	if (!par->panel_x)
+		par->enable_crt = 1; /* fall back to CRT if no panel is specified */
+
+	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
+		framebuffer_release(info);
+		return NULL;
+	}
+	return info;
+}
+
+static int gx1fb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct geodefb_par *par;
+	struct fb_info *info;
+	int ret;
+
+	ret = aperture_remove_conflicting_pci_devices(pdev, "gx1fb");
+	if (ret)
+		return ret;
+
+	info = gx1fb_init_fbinfo(&pdev->dev);
+	if (!info)
+		return -ENOMEM;
+	par = info->par;
+
+	/* GX1 display controller and CS5530 video device */
+	par->dc_ops  = &gx1_dc_ops;
+	par->vid_ops = &cs5530_vid_ops;
+
+	if ((ret = gx1fb_map_video_memory(info, pdev)) < 0) {
+		dev_err(&pdev->dev, "failed to map frame buffer or controller registers\n");
+		goto err;
+	}
+
+	ret = fb_find_mode(&info->var, info, mode_option,
+			   gx1_modedb, ARRAY_SIZE(gx1_modedb), NULL, 16);
+	if (ret == 0 || ret == 4) {
+		dev_err(&pdev->dev, "could not find valid video mode\n");
+		ret = -EINVAL;
+		goto err;
+	}
+
+        /* Clear the frame buffer of garbage. */
+        memset_io(info->screen_base, 0, info->fix.smem_len);
+
+	gx1fb_check_var(&info->var, info);
+	gx1fb_set_par(info);
+
+	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->vid_regs) {
+		iounmap(par->vid_regs);
+		pci_release_region(pdev, 1);
+	}
+	if (par->dc_regs) {
+		iounmap(par->dc_regs);
+		release_mem_region(gx1_gx_base() + 0x8300, 0x100);
+	}
+
+	fb_dealloc_cmap(&info->cmap);
+	framebuffer_release(info);
+
+	return ret;
+}
+
+static void gx1fb_remove(struct pci_dev *pdev)
+{
+	struct fb_info *info = pci_get_drvdata(pdev);
+	struct geodefb_par *par = info->par;
+
+	unregister_framebuffer(info);
+
+	iounmap((void __iomem *)info->screen_base);
+	pci_release_region(pdev, 0);
+
+	iounmap(par->vid_regs);
+	pci_release_region(pdev, 1);
+
+	iounmap(par->dc_regs);
+	release_mem_region(gx1_gx_base() + 0x8300, 0x100);
+
+	fb_dealloc_cmap(&info->cmap);
+
+	framebuffer_release(info);
+}
+
+#ifndef MODULE
+static void __init gx1fb_setup(char *options)
+{
+	char *this_opt;
+
+	if (!options || !*options)
+		return;
+
+	while ((this_opt = strsep(&options, ","))) {
+		if (!*this_opt)
+			continue;
+
+		if (!strncmp(this_opt, "mode:", 5))
+			strscpy(mode_option, this_opt + 5, sizeof(mode_option));
+		else if (!strncmp(this_opt, "crt:", 4))
+			crt_option = !!simple_strtoul(this_opt + 4, NULL, 0);
+		else if (!strncmp(this_opt, "panel:", 6))
+			strscpy(panel_option, this_opt + 6, sizeof(panel_option));
+		else
+			strscpy(mode_option, this_opt, sizeof(mode_option));
+	}
+}
+#endif
+
+static struct pci_device_id gx1fb_id_table[] = {
+	{ PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_VIDEO,
+	  PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
+	  0xff0000, 0 },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, gx1fb_id_table);
+
+static struct pci_driver gx1fb_driver = {
+	.name		= "gx1fb",
+	.id_table	= gx1fb_id_table,
+	.probe		= gx1fb_probe,
+	.remove		= gx1fb_remove,
+};
+
+static int __init gx1fb_init(void)
+{
+#ifndef MODULE
+	char *option = NULL;
+
+	if (fb_get_options("gx1fb", &option))
+		return -ENODEV;
+	gx1fb_setup(option);
+#endif
+	return pci_register_driver(&gx1fb_driver);
+}
+
+static void gx1fb_cleanup(void)
+{
+	pci_unregister_driver(&gx1fb_driver);
+}
+
+module_init(gx1fb_init);
+module_exit(gx1fb_cleanup);
+
+module_param_string(mode, mode_option, sizeof(mode_option), 0444);
+MODULE_PARM_DESC(mode, "video mode (<x>x<y>[-<bpp>][@<refr>])");
+
+module_param_named(crt, crt_option, int, 0444);
+MODULE_PARM_DESC(crt, "enable CRT output. 0 = off, 1 = on (default)");
+
+module_param_string(panel, panel_option, sizeof(panel_option), 0444);
+MODULE_PARM_DESC(panel, "size of attached flat panel (<x>x<y>)");
+
+MODULE_DESCRIPTION("framebuffer driver for the AMD Geode GX1");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/fbdev/geode/gxfb.h b/drivers/video/fbdev/geode/gxfb.h
new file mode 100644
index 000000000..792c111c2
--- /dev/null
+++ b/drivers/video/fbdev/geode/gxfb.h
@@ -0,0 +1,349 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2008 Andres Salomon <dilinger@debian.org>
+ *
+ * Geode GX2 header information
+ */
+#ifndef _GXFB_H_
+#define _GXFB_H_
+
+#include <linux/io.h>
+
+#define GP_REG_COUNT   (0x50 / 4)
+#define DC_REG_COUNT   (0x90 / 4)
+#define VP_REG_COUNT   (0x138 / 8)
+#define FP_REG_COUNT   (0x68 / 8)
+
+#define DC_PAL_COUNT   0x104
+
+struct gxfb_par {
+	int enable_crt;
+	void __iomem *dc_regs;
+	void __iomem *vid_regs;
+	void __iomem *gp_regs;
+	int powered_down;
+
+	/* register state, for power management functionality */
+	struct {
+		uint64_t padsel;
+		uint64_t dotpll;
+	} msr;
+
+	uint32_t gp[GP_REG_COUNT];
+	uint32_t dc[DC_REG_COUNT];
+	uint64_t vp[VP_REG_COUNT];
+	uint64_t fp[FP_REG_COUNT];
+
+	uint32_t pal[DC_PAL_COUNT];
+};
+
+unsigned int gx_frame_buffer_size(void);
+int gx_line_delta(int xres, int bpp);
+void gx_set_mode(struct fb_info *info);
+void gx_set_hw_palette_reg(struct fb_info *info, unsigned regno,
+		unsigned red, unsigned green, unsigned blue);
+
+void gx_set_dclk_frequency(struct fb_info *info);
+void gx_configure_display(struct fb_info *info);
+int gx_blank_display(struct fb_info *info, int blank_mode);
+
+int gx_powerdown(struct fb_info *info);
+int gx_powerup(struct fb_info *info);
+
+/* Graphics Processor registers (table 6-23 from the data book) */
+enum gp_registers {
+	GP_DST_OFFSET = 0,
+	GP_SRC_OFFSET,
+	GP_STRIDE,
+	GP_WID_HEIGHT,
+
+	GP_SRC_COLOR_FG,
+	GP_SRC_COLOR_BG,
+	GP_PAT_COLOR_0,
+	GP_PAT_COLOR_1,
+
+	GP_PAT_COLOR_2,
+	GP_PAT_COLOR_3,
+	GP_PAT_COLOR_4,
+	GP_PAT_COLOR_5,
+
+	GP_PAT_DATA_0,
+	GP_PAT_DATA_1,
+	GP_RASTER_MODE,
+	GP_VECTOR_MODE,
+
+	GP_BLT_MODE,
+	GP_BLT_STATUS,
+	GP_HST_SRC,
+	GP_BASE_OFFSET, /* 0x4c */
+};
+
+#define GP_BLT_STATUS_BLT_PENDING	(1 << 2)
+#define GP_BLT_STATUS_BLT_BUSY		(1 << 0)
+
+
+/* Display Controller registers (table 6-38 from the data book) */
+enum dc_registers {
+	DC_UNLOCK = 0,
+	DC_GENERAL_CFG,
+	DC_DISPLAY_CFG,
+	DC_RSVD_0,
+
+	DC_FB_ST_OFFSET,
+	DC_CB_ST_OFFSET,
+	DC_CURS_ST_OFFSET,
+	DC_ICON_ST_OFFSET,
+
+	DC_VID_Y_ST_OFFSET,
+	DC_VID_U_ST_OFFSET,
+	DC_VID_V_ST_OFFSET,
+	DC_RSVD_1,
+
+	DC_LINE_SIZE,
+	DC_GFX_PITCH,
+	DC_VID_YUV_PITCH,
+	DC_RSVD_2,
+
+	DC_H_ACTIVE_TIMING,
+	DC_H_BLANK_TIMING,
+	DC_H_SYNC_TIMING,
+	DC_RSVD_3,
+
+	DC_V_ACTIVE_TIMING,
+	DC_V_BLANK_TIMING,
+	DC_V_SYNC_TIMING,
+	DC_RSVD_4,
+
+	DC_CURSOR_X,
+	DC_CURSOR_Y,
+	DC_ICON_X,
+	DC_LINE_CNT,
+
+	DC_PAL_ADDRESS,
+	DC_PAL_DATA,
+	DC_DFIFO_DIAG,
+	DC_CFIFO_DIAG,
+
+	DC_VID_DS_DELTA,
+	DC_GLIU0_MEM_OFFSET,
+	DC_RSVD_5,
+	DC_DV_ACC, /* 0x8c */
+};
+
+#define DC_UNLOCK_LOCK			0x00000000
+#define DC_UNLOCK_UNLOCK		0x00004758	/* magic value */
+
+#define DC_GENERAL_CFG_YUVM		(1 << 20)
+#define DC_GENERAL_CFG_VDSE		(1 << 19)
+#define DC_GENERAL_CFG_DFHPEL_SHIFT	12
+#define DC_GENERAL_CFG_DFHPSL_SHIFT	8
+#define DC_GENERAL_CFG_DECE		(1 << 6)
+#define DC_GENERAL_CFG_CMPE		(1 << 5)
+#define DC_GENERAL_CFG_VIDE		(1 << 3)
+#define DC_GENERAL_CFG_ICNE		(1 << 2)
+#define DC_GENERAL_CFG_CURE		(1 << 1)
+#define DC_GENERAL_CFG_DFLE		(1 << 0)
+
+#define DC_DISPLAY_CFG_A20M		(1 << 31)
+#define DC_DISPLAY_CFG_A18M		(1 << 30)
+#define DC_DISPLAY_CFG_PALB		(1 << 25)
+#define DC_DISPLAY_CFG_DISP_MODE_24BPP	(1 << 9)
+#define DC_DISPLAY_CFG_DISP_MODE_16BPP	(1 << 8)
+#define DC_DISPLAY_CFG_DISP_MODE_8BPP	(0)
+#define DC_DISPLAY_CFG_VDEN		(1 << 4)
+#define DC_DISPLAY_CFG_GDEN		(1 << 3)
+#define DC_DISPLAY_CFG_TGEN		(1 << 0)
+
+
+/*
+ * Video Processor registers (table 6-54).
+ * There is space for 64 bit values, but we never use more than the
+ * lower 32 bits.  The actual register save/restore code only bothers
+ * to restore those 32 bits.
+ */
+enum vp_registers {
+	VP_VCFG = 0,
+	VP_DCFG,
+
+	VP_VX,
+	VP_VY,
+
+	VP_VS,
+	VP_VCK,
+
+	VP_VCM,
+	VP_GAR,
+
+	VP_GDR,
+	VP_RSVD_0,
+
+	VP_MISC,
+	VP_CCS,
+
+	VP_RSVD_1,
+	VP_RSVD_2,
+
+	VP_RSVD_3,
+	VP_VDC,
+
+	VP_VCO,
+	VP_CRC,
+
+	VP_CRC32,
+	VP_VDE,
+
+	VP_CCK,
+	VP_CCM,
+
+	VP_CC1,
+	VP_CC2,
+
+	VP_A1X,
+	VP_A1Y,
+
+	VP_A1C,
+	VP_A1T,
+
+	VP_A2X,
+	VP_A2Y,
+
+	VP_A2C,
+	VP_A2T,
+
+	VP_A3X,
+	VP_A3Y,
+
+	VP_A3C,
+	VP_A3T,
+
+	VP_VRR,
+	VP_AWT,
+
+	VP_VTM, /* 0x130 */
+};
+
+#define VP_VCFG_VID_EN			(1 << 0)
+
+#define VP_DCFG_DAC_VREF		(1 << 26)
+#define VP_DCFG_GV_GAM			(1 << 21)
+#define VP_DCFG_VG_CK			(1 << 20)
+#define VP_DCFG_CRT_SYNC_SKW_DEFAULT	(1 << 16)
+#define VP_DCFG_CRT_SYNC_SKW		((1 << 14) | (1 << 15) | (1 << 16))
+#define VP_DCFG_CRT_VSYNC_POL		(1 << 9)
+#define VP_DCFG_CRT_HSYNC_POL		(1 << 8)
+#define VP_DCFG_FP_DATA_EN		(1 << 7)	/* undocumented */
+#define VP_DCFG_FP_PWR_EN		(1 << 6)	/* undocumented */
+#define VP_DCFG_DAC_BL_EN		(1 << 3)
+#define VP_DCFG_VSYNC_EN		(1 << 2)
+#define VP_DCFG_HSYNC_EN		(1 << 1)
+#define VP_DCFG_CRT_EN			(1 << 0)
+
+#define VP_MISC_GAM_EN			(1 << 0)
+#define VP_MISC_DACPWRDN		(1 << 10)
+#define VP_MISC_APWRDN			(1 << 11)
+
+
+/*
+ * Flat Panel registers (table 6-55).
+ * Also 64 bit registers; see above note about 32-bit handling.
+ */
+
+/* we're actually in the VP register space, starting at address 0x400 */
+#define VP_FP_START		0x400
+
+enum fp_registers {
+	FP_PT1 = 0,
+	FP_PT2,
+
+	FP_PM,
+	FP_DFC,
+
+	FP_BLFSR,
+	FP_RLFSR,
+
+	FP_FMI,
+	FP_FMD,
+
+	FP_RSVD_0,
+	FP_DCA,
+
+	FP_DMD,
+	FP_CRC,
+
+	FP_FBB, /* 0x460 */
+};
+
+#define FP_PT1_VSIZE_SHIFT		16		/* undocumented? */
+#define FP_PT1_VSIZE_MASK		0x7FF0000	/* undocumented? */
+
+#define FP_PT2_HSP			(1 << 22)
+#define FP_PT2_VSP			(1 << 23)
+
+#define FP_PM_P				(1 << 24)       /* panel power on */
+#define FP_PM_PANEL_PWR_UP		(1 << 3)        /* r/o */
+#define FP_PM_PANEL_PWR_DOWN		(1 << 2)        /* r/o */
+#define FP_PM_PANEL_OFF			(1 << 1)        /* r/o */
+#define FP_PM_PANEL_ON			(1 << 0)        /* r/o */
+
+#define FP_DFC_NFI			((1 << 4) | (1 << 5) | (1 << 6))
+
+
+/* register access functions */
+
+static inline uint32_t read_gp(struct gxfb_par *par, int reg)
+{
+	return readl(par->gp_regs + 4*reg);
+}
+
+static inline void write_gp(struct gxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->gp_regs + 4*reg);
+}
+
+static inline uint32_t read_dc(struct gxfb_par *par, int reg)
+{
+	return readl(par->dc_regs + 4*reg);
+}
+
+static inline void write_dc(struct gxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->dc_regs + 4*reg);
+}
+
+static inline uint32_t read_vp(struct gxfb_par *par, int reg)
+{
+	return readl(par->vid_regs + 8*reg);
+}
+
+static inline void write_vp(struct gxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->vid_regs + 8*reg);
+}
+
+static inline uint32_t read_fp(struct gxfb_par *par, int reg)
+{
+	return readl(par->vid_regs + 8*reg + VP_FP_START);
+}
+
+static inline void write_fp(struct gxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->vid_regs + 8*reg + VP_FP_START);
+}
+
+
+/* MSRs are defined in linux/cs5535.h; their bitfields are here */
+
+#define MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3	(1 << 3)
+#define MSR_GLCP_SYS_RSTPLL_DOTPREMULT2	(1 << 2)
+#define MSR_GLCP_SYS_RSTPLL_DOTPREDIV2	(1 << 1)
+
+#define MSR_GLCP_DOTPLL_LOCK		(1 << 25)	/* r/o */
+#define MSR_GLCP_DOTPLL_BYPASS		(1 << 15)
+#define MSR_GLCP_DOTPLL_DOTRESET	(1 << 0)
+
+#define MSR_GX_MSR_PADSEL_MASK		0x3FFFFFFF	/* undocumented? */
+#define MSR_GX_MSR_PADSEL_TFT		0x1FFFFFFF	/* undocumented? */
+
+#define MSR_GX_GLD_MSR_CONFIG_FP	(1 << 3)
+
+#endif
diff --git a/drivers/video/fbdev/geode/gxfb_core.c b/drivers/video/fbdev/geode/gxfb_core.c
new file mode 100644
index 000000000..2527bd80e
--- /dev/null
+++ b/drivers/video/fbdev/geode/gxfb_core.c
@@ -0,0 +1,541 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Geode GX framebuffer driver.
+ *
+ *   Copyright (C) 2006 Arcom Control Systems Ltd.
+ *
+ * This driver assumes that the BIOS has created a virtual PCI device header
+ * for the video device. The PCI header is assumed to contain the following
+ * BARs:
+ *
+ *    BAR0 - framebuffer memory
+ *    BAR1 - graphics processor registers
+ *    BAR2 - display controller registers
+ *    BAR3 - video processor and flat panel control registers.
+ *
+ * 16 MiB of framebuffer memory is assumed to be available.
+ */
+#include <linux/aperture.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/console.h>
+#include <linux/suspend.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/cs5535.h>
+
+#include <asm/olpc.h>
+
+#include "gxfb.h"
+
+static char *mode_option;
+static int vram;
+static int vt_switch;
+
+/* Modes relevant to the GX (taken from modedb.c) */
+static struct fb_videomode gx_modedb[] = {
+	/* 640x480-60 VESA */
+	{ NULL, 60, 640, 480, 39682,  48, 16, 33, 10, 96, 2,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 640x480-75 VESA */
+	{ NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 640x480-85 VESA */
+	{ NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 800x600-60 VESA */
+	{ NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 800x600-75 VESA */
+	{ NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 800x600-85 VESA */
+	{ NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1024x768-60 VESA */
+	{ NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6,
+	  0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1024x768-75 VESA */
+	{ NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1024x768-85 VESA */
+	{ NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x960-60 VESA */
+	{ NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x960-85 VESA */
+	{ NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x1024-60 VESA */
+	{ NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x1024-75 VESA */
+	{ NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1280x1024-85 VESA */
+	{ NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1600x1200-60 VESA */
+	{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1600x1200-75 VESA */
+	{ NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+	/* 1600x1200-85 VESA */
+	{ NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
+};
+
+static struct fb_videomode gx_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 *) gx_dcon_modedb;
+		*size = ARRAY_SIZE(gx_dcon_modedb);
+	} else {
+		*modedb = (struct fb_videomode *) gx_modedb;
+		*size = ARRAY_SIZE(gx_modedb);
+	}
+}
+
+static int gxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	if (var->xres > 1600 || var->yres > 1200)
+		return -EINVAL;
+	if ((var->xres > 1280 || var->yres > 1024) && var->bits_per_pixel > 16)
+		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 (gx_line_delta(var->xres, var->bits_per_pixel) * var->yres > info->fix.smem_len)
+		return -EINVAL;
+
+	/* FIXME: Check timing parameters here? */
+
+	return 0;
+}
+
+static int gxfb_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 = gx_line_delta(info->var.xres, info->var.bits_per_pixel);
+
+	gx_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 gxfb_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;
+
+		gx_set_hw_palette_reg(info, regno, red, green, blue);
+	}
+
+	return 0;
+}
+
+static int gxfb_blank(int blank_mode, struct fb_info *info)
+{
+	return gx_blank_display(info, blank_mode);
+}
+
+static int gxfb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
+{
+	struct gxfb_par *par = info->par;
+	int ret;
+
+	ret = pci_enable_device(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = pci_request_region(dev, 3, "gxfb (video processor)");
+	if (ret < 0)
+		return ret;
+	par->vid_regs = pci_ioremap_bar(dev, 3);
+	if (!par->vid_regs)
+		return -ENOMEM;
+
+	ret = pci_request_region(dev, 2, "gxfb (display controller)");
+	if (ret < 0)
+		return ret;
+	par->dc_regs = pci_ioremap_bar(dev, 2);
+	if (!par->dc_regs)
+		return -ENOMEM;
+
+	ret = pci_request_region(dev, 1, "gxfb (graphics processor)");
+	if (ret < 0)
+		return ret;
+	par->gp_regs = pci_ioremap_bar(dev, 1);
+
+	if (!par->gp_regs)
+		return -ENOMEM;
+
+	ret = pci_request_region(dev, 0, "gxfb (framebuffer)");
+	if (ret < 0)
+		return ret;
+
+	info->fix.smem_start = pci_resource_start(dev, 0);
+	info->fix.smem_len = vram ? vram : gx_frame_buffer_size();
+	info->screen_base = ioremap_wc(info->fix.smem_start,
+				       info->fix.smem_len);
+	if (!info->screen_base)
+		return -ENOMEM;
+
+	/* Set the 16MiB aligned base address of the graphics memory region
+	 * in the display controller */
+
+	write_dc(par, DC_GLIU0_MEM_OFFSET, info->fix.smem_start & 0xFF000000);
+
+	dev_info(&dev->dev, "%d KiB of video memory at 0x%lx\n",
+		 info->fix.smem_len / 1024, info->fix.smem_start);
+
+	return 0;
+}
+
+static const struct fb_ops gxfb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_check_var	= gxfb_check_var,
+	.fb_set_par	= gxfb_set_par,
+	.fb_setcolreg	= gxfb_setcolreg,
+	.fb_blank       = gxfb_blank,
+	/* No HW acceleration for now. */
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+};
+
+static struct fb_info *gxfb_init_fbinfo(struct device *dev)
+{
+	struct gxfb_par *par;
+	struct fb_info *info;
+
+	/* Alloc enough space for the pseudo palette. */
+	info = framebuffer_alloc(sizeof(struct gxfb_par) + sizeof(u32) * 16,
+			dev);
+	if (!info)
+		return NULL;
+
+	par = info->par;
+
+	strcpy(info->fix.id, "Geode GX");
+
+	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		= &gxfb_ops;
+	info->flags		= FBINFO_DEFAULT;
+	info->node		= -1;
+
+	info->pseudo_palette	= (void *)par + sizeof(struct gxfb_par);
+
+	info->var.grayscale	= 0;
+
+	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
+		framebuffer_release(info);
+		return NULL;
+	}
+
+	return info;
+}
+
+static int __maybe_unused gxfb_suspend(struct device *dev)
+{
+	struct fb_info *info = dev_get_drvdata(dev);
+
+	console_lock();
+	gx_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 gxfb_resume(struct device *dev)
+{
+	struct fb_info *info = dev_get_drvdata(dev);
+	int ret;
+
+	console_lock();
+	ret = gx_powerup(info);
+	if (ret) {
+		printk(KERN_ERR "gxfb:  power up failed!\n");
+		return ret;
+	}
+
+	fb_set_suspend(info, 0);
+	console_unlock();
+	return 0;
+}
+
+static int gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct gxfb_par *par;
+	struct fb_info *info;
+	int ret;
+	unsigned long val;
+
+	struct fb_videomode *modedb_ptr;
+	unsigned int modedb_size;
+
+	ret = aperture_remove_conflicting_pci_devices(pdev, "gxfb");
+	if (ret)
+		return ret;
+
+	info = gxfb_init_fbinfo(&pdev->dev);
+	if (!info)
+		return -ENOMEM;
+	par = info->par;
+
+	if ((ret = gxfb_map_video_memory(info, pdev)) < 0) {
+		dev_err(&pdev->dev, "failed to map frame buffer or controller registers\n");
+		goto err;
+	}
+
+	/* Figure out if this is a TFT or CRT part */
+
+	rdmsrl(MSR_GX_GLD_MSR_CONFIG, val);
+
+	if ((val & MSR_GX_GLD_MSR_CONFIG_FP) == MSR_GX_GLD_MSR_CONFIG_FP)
+		par->enable_crt = 0;
+	else
+		par->enable_crt = 1;
+
+	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 frame buffer of garbage. */
+        memset_io(info->screen_base, 0, info->fix.smem_len);
+
+	gxfb_check_var(&info->var, info);
+	gxfb_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->vid_regs) {
+		iounmap(par->vid_regs);
+		pci_release_region(pdev, 3);
+	}
+	if (par->dc_regs) {
+		iounmap(par->dc_regs);
+		pci_release_region(pdev, 2);
+	}
+	if (par->gp_regs) {
+		iounmap(par->gp_regs);
+		pci_release_region(pdev, 1);
+	}
+
+	fb_dealloc_cmap(&info->cmap);
+	framebuffer_release(info);
+	return ret;
+}
+
+static void gxfb_remove(struct pci_dev *pdev)
+{
+	struct fb_info *info = pci_get_drvdata(pdev);
+	struct gxfb_par *par = info->par;
+
+	unregister_framebuffer(info);
+
+	iounmap((void __iomem *)info->screen_base);
+	pci_release_region(pdev, 0);
+
+	iounmap(par->vid_regs);
+	pci_release_region(pdev, 3);
+
+	iounmap(par->dc_regs);
+	pci_release_region(pdev, 2);
+
+	iounmap(par->gp_regs);
+	pci_release_region(pdev, 1);
+
+	fb_dealloc_cmap(&info->cmap);
+
+	framebuffer_release(info);
+}
+
+static const struct pci_device_id gxfb_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_GX_VIDEO) },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, gxfb_id_table);
+
+static const struct dev_pm_ops gxfb_pm_ops = {
+#ifdef CONFIG_PM_SLEEP
+	.suspend	= gxfb_suspend,
+	.resume		= gxfb_resume,
+	.freeze		= NULL,
+	.thaw		= gxfb_resume,
+	.poweroff	= NULL,
+	.restore	= gxfb_resume,
+#endif
+};
+
+static struct pci_driver gxfb_driver = {
+	.name		= "gxfb",
+	.id_table	= gxfb_id_table,
+	.probe		= gxfb_probe,
+	.remove		= gxfb_remove,
+	.driver.pm	= &gxfb_pm_ops,
+};
+
+#ifndef MODULE
+static int __init gxfb_setup(char *options)
+{
+
+	char *opt;
+
+	if (!options || !*options)
+		return 0;
+
+	while ((opt = strsep(&options, ",")) != NULL) {
+		if (!*opt)
+			continue;
+
+		mode_option = opt;
+	}
+
+	return 0;
+}
+#endif
+
+static int __init gxfb_init(void)
+{
+#ifndef MODULE
+	char *option = NULL;
+
+	if (fb_get_options("gxfb", &option))
+		return -ENODEV;
+
+	gxfb_setup(option);
+#endif
+	return pci_register_driver(&gxfb_driver);
+}
+
+static void __exit gxfb_cleanup(void)
+{
+	pci_unregister_driver(&gxfb_driver);
+}
+
+module_init(gxfb_init);
+module_exit(gxfb_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 GX");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/fbdev/geode/lxfb.h b/drivers/video/fbdev/geode/lxfb.h
new file mode 100644
index 000000000..d37b32dbc
--- /dev/null
+++ b/drivers/video/fbdev/geode/lxfb.h
@@ -0,0 +1,443 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Geode LX framebuffer driver
+ *
+ * Copyright (C) 2006-2007, Advanced Micro Devices,Inc.
+ * Copyright (c) 2008  Andres Salomon <dilinger@debian.org>
+ */
+#ifndef _LXFB_H_
+#define _LXFB_H_
+
+#include <linux/fb.h>
+
+#define GP_REG_COUNT	(0x7c / 4)
+#define DC_REG_COUNT	(0xf0 / 4)
+#define VP_REG_COUNT	(0x158 / 8)
+#define FP_REG_COUNT	(0x60 / 8)
+
+#define DC_PAL_COUNT	0x104
+#define DC_HFILT_COUNT	0x100
+#define DC_VFILT_COUNT	0x100
+#define VP_COEFF_SIZE	0x1000
+#define VP_PAL_COUNT	0x100
+
+#define OUTPUT_CRT   0x01
+#define OUTPUT_PANEL 0x02
+
+struct lxfb_par {
+	int output;
+
+	void __iomem *gp_regs;
+	void __iomem *dc_regs;
+	void __iomem *vp_regs;
+	int powered_down;
+
+	/* register state, for power mgmt functionality */
+	struct {
+		uint64_t padsel;
+		uint64_t dotpll;
+		uint64_t dfglcfg;
+		uint64_t dcspare;
+	} msr;
+
+	uint32_t gp[GP_REG_COUNT];
+	uint32_t dc[DC_REG_COUNT];
+	uint64_t vp[VP_REG_COUNT];
+	uint64_t fp[FP_REG_COUNT];
+
+	uint32_t dc_pal[DC_PAL_COUNT];
+	uint32_t vp_pal[VP_PAL_COUNT];
+	uint32_t hcoeff[DC_HFILT_COUNT * 2];
+	uint32_t vcoeff[DC_VFILT_COUNT];
+	uint32_t vp_coeff[VP_COEFF_SIZE / 4];
+};
+
+static inline unsigned int lx_get_pitch(unsigned int xres, int bpp)
+{
+	return (((xres * (bpp >> 3)) + 7) & ~7);
+}
+
+void lx_set_mode(struct fb_info *);
+unsigned int lx_framebuffer_size(void);
+int lx_blank_display(struct fb_info *, int);
+void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
+			unsigned int, unsigned int);
+
+int lx_powerdown(struct fb_info *info);
+int lx_powerup(struct fb_info *info);
+
+/* Graphics Processor registers (table 6-29 from the data book) */
+enum gp_registers {
+	GP_DST_OFFSET = 0,
+	GP_SRC_OFFSET,
+	GP_STRIDE,
+	GP_WID_HEIGHT,
+
+	GP_SRC_COLOR_FG,
+	GP_SRC_COLOR_BG,
+	GP_PAT_COLOR_0,
+	GP_PAT_COLOR_1,
+
+	GP_PAT_COLOR_2,
+	GP_PAT_COLOR_3,
+	GP_PAT_COLOR_4,
+	GP_PAT_COLOR_5,
+
+	GP_PAT_DATA_0,
+	GP_PAT_DATA_1,
+	GP_RASTER_MODE,
+	GP_VECTOR_MODE,
+
+	GP_BLT_MODE,
+	GP_BLT_STATUS,
+	GP_HST_SRC,
+	GP_BASE_OFFSET,
+
+	GP_CMD_TOP,
+	GP_CMD_BOT,
+	GP_CMD_READ,
+	GP_CMD_WRITE,
+
+	GP_CH3_OFFSET,
+	GP_CH3_MODE_STR,
+	GP_CH3_WIDHI,
+	GP_CH3_HSRC,
+
+	GP_LUT_INDEX,
+	GP_LUT_DATA,
+	GP_INT_CNTRL, /* 0x78 */
+};
+
+#define GP_BLT_STATUS_CE		(1 << 4)	/* cmd buf empty */
+#define GP_BLT_STATUS_PB		(1 << 0)	/* primitive busy */
+
+
+/* Display Controller registers (table 6-47 from the data book) */
+enum dc_registers {
+	DC_UNLOCK = 0,
+	DC_GENERAL_CFG,
+	DC_DISPLAY_CFG,
+	DC_ARB_CFG,
+
+	DC_FB_ST_OFFSET,
+	DC_CB_ST_OFFSET,
+	DC_CURS_ST_OFFSET,
+	DC_RSVD_0,
+
+	DC_VID_Y_ST_OFFSET,
+	DC_VID_U_ST_OFFSET,
+	DC_VID_V_ST_OFFSET,
+	DC_DV_TOP,
+
+	DC_LINE_SIZE,
+	DC_GFX_PITCH,
+	DC_VID_YUV_PITCH,
+	DC_RSVD_1,
+
+	DC_H_ACTIVE_TIMING,
+	DC_H_BLANK_TIMING,
+	DC_H_SYNC_TIMING,
+	DC_RSVD_2,
+
+	DC_V_ACTIVE_TIMING,
+	DC_V_BLANK_TIMING,
+	DC_V_SYNC_TIMING,
+	DC_FB_ACTIVE,
+
+	DC_CURSOR_X,
+	DC_CURSOR_Y,
+	DC_RSVD_3,
+	DC_LINE_CNT,
+
+	DC_PAL_ADDRESS,
+	DC_PAL_DATA,
+	DC_DFIFO_DIAG,
+	DC_CFIFO_DIAG,
+
+	DC_VID_DS_DELTA,
+	DC_GLIU0_MEM_OFFSET,
+	DC_DV_CTL,
+	DC_DV_ACCESS,
+
+	DC_GFX_SCALE,
+	DC_IRQ_FILT_CTL,
+	DC_FILT_COEFF1,
+	DC_FILT_COEFF2,
+
+	DC_VBI_EVEN_CTL,
+	DC_VBI_ODD_CTL,
+	DC_VBI_HOR,
+	DC_VBI_LN_ODD,
+
+	DC_VBI_LN_EVEN,
+	DC_VBI_PITCH,
+	DC_CLR_KEY,
+	DC_CLR_KEY_MASK,
+
+	DC_CLR_KEY_X,
+	DC_CLR_KEY_Y,
+	DC_IRQ,
+	DC_RSVD_4,
+
+	DC_RSVD_5,
+	DC_GENLK_CTL,
+	DC_VID_EVEN_Y_ST_OFFSET,
+	DC_VID_EVEN_U_ST_OFFSET,
+
+	DC_VID_EVEN_V_ST_OFFSET,
+	DC_V_ACTIVE_EVEN_TIMING,
+	DC_V_BLANK_EVEN_TIMING,
+	DC_V_SYNC_EVEN_TIMING,	/* 0xec */
+};
+
+#define DC_UNLOCK_LOCK			0x00000000
+#define DC_UNLOCK_UNLOCK		0x00004758	/* magic value */
+
+#define DC_GENERAL_CFG_FDTY		(1 << 17)
+#define DC_GENERAL_CFG_DFHPEL_SHIFT	(12)
+#define DC_GENERAL_CFG_DFHPSL_SHIFT	(8)
+#define DC_GENERAL_CFG_VGAE		(1 << 7)
+#define DC_GENERAL_CFG_DECE		(1 << 6)
+#define DC_GENERAL_CFG_CMPE		(1 << 5)
+#define DC_GENERAL_CFG_VIDE		(1 << 3)
+#define DC_GENERAL_CFG_DFLE		(1 << 0)
+
+#define DC_DISPLAY_CFG_VISL		(1 << 27)
+#define DC_DISPLAY_CFG_PALB		(1 << 25)
+#define DC_DISPLAY_CFG_DCEN		(1 << 24)
+#define DC_DISPLAY_CFG_DISP_MODE_24BPP	(1 << 9)
+#define DC_DISPLAY_CFG_DISP_MODE_16BPP	(1 << 8)
+#define DC_DISPLAY_CFG_DISP_MODE_8BPP	(0)
+#define DC_DISPLAY_CFG_TRUP		(1 << 6)
+#define DC_DISPLAY_CFG_VDEN		(1 << 4)
+#define DC_DISPLAY_CFG_GDEN		(1 << 3)
+#define DC_DISPLAY_CFG_TGEN		(1 << 0)
+
+#define DC_DV_TOP_DV_TOP_EN		(1 << 0)
+
+#define DC_DV_CTL_DV_LINE_SIZE		((1 << 10) | (1 << 11))
+#define DC_DV_CTL_DV_LINE_SIZE_1K	(0)
+#define DC_DV_CTL_DV_LINE_SIZE_2K	(1 << 10)
+#define DC_DV_CTL_DV_LINE_SIZE_4K	(1 << 11)
+#define DC_DV_CTL_DV_LINE_SIZE_8K	((1 << 10) | (1 << 11))
+#define DC_DV_CTL_CLEAR_DV_RAM		(1 << 0)
+
+#define DC_IRQ_FILT_CTL_H_FILT_SEL	(1 << 10)
+
+#define DC_CLR_KEY_CLR_KEY_EN		(1 << 24)
+
+#define DC_IRQ_VIP_VSYNC_IRQ_STATUS	(1 << 21)	/* undocumented? */
+#define DC_IRQ_STATUS			(1 << 20)	/* undocumented? */
+#define DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK	(1 << 1)
+#define DC_IRQ_MASK			(1 << 0)
+
+#define DC_GENLK_CTL_FLICK_SEL_MASK	(0x0F << 28)
+#define DC_GENLK_CTL_ALPHA_FLICK_EN	(1 << 25)
+#define DC_GENLK_CTL_FLICK_EN		(1 << 24)
+#define DC_GENLK_CTL_GENLK_EN		(1 << 18)
+
+
+/*
+ * Video Processor registers (table 6-71).
+ * There is space for 64 bit values, but we never use more than the
+ * lower 32 bits.  The actual register save/restore code only bothers
+ * to restore those 32 bits.
+ */
+enum vp_registers {
+	VP_VCFG = 0,
+	VP_DCFG,
+
+	VP_VX,
+	VP_VY,
+
+	VP_SCL,
+	VP_VCK,
+
+	VP_VCM,
+	VP_PAR,
+
+	VP_PDR,
+	VP_SLR,
+
+	VP_MISC,
+	VP_CCS,
+
+	VP_VYS,
+	VP_VXS,
+
+	VP_RSVD_0,
+	VP_VDC,
+
+	VP_RSVD_1,
+	VP_CRC,
+
+	VP_CRC32,
+	VP_VDE,
+
+	VP_CCK,
+	VP_CCM,
+
+	VP_CC1,
+	VP_CC2,
+
+	VP_A1X,
+	VP_A1Y,
+
+	VP_A1C,
+	VP_A1T,
+
+	VP_A2X,
+	VP_A2Y,
+
+	VP_A2C,
+	VP_A2T,
+
+	VP_A3X,
+	VP_A3Y,
+
+	VP_A3C,
+	VP_A3T,
+
+	VP_VRR,
+	VP_AWT,
+
+	VP_VTM,
+	VP_VYE,
+
+	VP_A1YE,
+	VP_A2YE,
+
+	VP_A3YE,	/* 0x150 */
+
+	VP_VCR = 0x1000, /* 0x1000 - 0x1fff */
+};
+
+#define VP_VCFG_VID_EN			(1 << 0)
+
+#define VP_DCFG_GV_GAM			(1 << 21)
+#define VP_DCFG_PWR_SEQ_DELAY		((1 << 17) | (1 << 18) | (1 << 19))
+#define VP_DCFG_PWR_SEQ_DELAY_DEFAULT	(1 << 19)	/* undocumented */
+#define VP_DCFG_CRT_SYNC_SKW		((1 << 14) | (1 << 15) | (1 << 16))
+#define VP_DCFG_CRT_SYNC_SKW_DEFAULT	(1 << 16)
+#define VP_DCFG_CRT_VSYNC_POL		(1 << 9)
+#define VP_DCFG_CRT_HSYNC_POL		(1 << 8)
+#define VP_DCFG_DAC_BL_EN		(1 << 3)
+#define VP_DCFG_VSYNC_EN		(1 << 2)
+#define VP_DCFG_HSYNC_EN		(1 << 1)
+#define VP_DCFG_CRT_EN			(1 << 0)
+
+#define VP_MISC_APWRDN			(1 << 11)
+#define VP_MISC_DACPWRDN		(1 << 10)
+#define VP_MISC_BYP_BOTH		(1 << 0)
+
+
+/*
+ * Flat Panel registers (table 6-71).
+ * Also 64 bit registers; see above note about 32-bit handling.
+ */
+
+/* we're actually in the VP register space, starting at address 0x400 */
+#define VP_FP_START	0x400
+
+enum fp_registers {
+	FP_PT1 = 0,
+	FP_PT2,
+
+	FP_PM,
+	FP_DFC,
+
+	FP_RSVD_0,
+	FP_RSVD_1,
+
+	FP_RSVD_2,
+	FP_RSVD_3,
+
+	FP_RSVD_4,
+	FP_DCA,
+
+	FP_DMD,
+	FP_CRC, /* 0x458 */
+};
+
+#define FP_PT2_HSP			(1 << 22)
+#define FP_PT2_VSP			(1 << 23)
+#define FP_PT2_SCRC			(1 << 27)	/* shfclk free */
+
+#define FP_PM_P				(1 << 24)	/* panel power ctl */
+#define FP_PM_PANEL_PWR_UP		(1 << 3)	/* r/o */
+#define FP_PM_PANEL_PWR_DOWN		(1 << 2)	/* r/o */
+#define FP_PM_PANEL_OFF			(1 << 1)	/* r/o */
+#define FP_PM_PANEL_ON			(1 << 0)	/* r/o */
+
+#define FP_DFC_BC			((1 << 4) | (1 << 5) | (1 << 6))
+
+
+/* register access functions */
+
+static inline uint32_t read_gp(struct lxfb_par *par, int reg)
+{
+	return readl(par->gp_regs + 4*reg);
+}
+
+static inline void write_gp(struct lxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->gp_regs + 4*reg);
+}
+
+static inline uint32_t read_dc(struct lxfb_par *par, int reg)
+{
+	return readl(par->dc_regs + 4*reg);
+}
+
+static inline void write_dc(struct lxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->dc_regs + 4*reg);
+}
+
+static inline uint32_t read_vp(struct lxfb_par *par, int reg)
+{
+	return readl(par->vp_regs + 8*reg);
+}
+
+static inline void write_vp(struct lxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->vp_regs + 8*reg);
+}
+
+static inline uint32_t read_fp(struct lxfb_par *par, int reg)
+{
+	return readl(par->vp_regs + 8*reg + VP_FP_START);
+}
+
+static inline void write_fp(struct lxfb_par *par, int reg, uint32_t val)
+{
+	writel(val, par->vp_regs + 8*reg + VP_FP_START);
+}
+
+
+/* MSRs are defined in linux/cs5535.h; their bitfields are here */
+
+#define MSR_GLCP_DOTPLL_LOCK		(1 << 25)	/* r/o */
+#define MSR_GLCP_DOTPLL_HALFPIX		(1 << 24)
+#define MSR_GLCP_DOTPLL_BYPASS		(1 << 15)
+#define MSR_GLCP_DOTPLL_DOTRESET	(1 << 0)
+
+/* note: this is actually the VP's GLD_MSR_CONFIG */
+#define MSR_LX_GLD_MSR_CONFIG_FMT	((1 << 3) | (1 << 4) | (1 << 5))
+#define MSR_LX_GLD_MSR_CONFIG_FMT_FP	(1 << 3)
+#define MSR_LX_GLD_MSR_CONFIG_FMT_CRT	(0)
+#define MSR_LX_GLD_MSR_CONFIG_FPC	(1 << 15)	/* FP *and* CRT */
+
+#define MSR_LX_MSR_PADSEL_TFT_SEL_LOW	0xDFFFFFFF	/* ??? */
+#define MSR_LX_MSR_PADSEL_TFT_SEL_HIGH	0x0000003F	/* ??? */
+
+#define MSR_LX_SPARE_MSR_DIS_CFIFO_HGO	(1 << 11)	/* undocumented */
+#define MSR_LX_SPARE_MSR_VFIFO_ARB_SEL	(1 << 10)	/* undocumented */
+#define MSR_LX_SPARE_MSR_WM_LPEN_OVRD	(1 << 9)	/* undocumented */
+#define MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M	(1 << 8)	/* undocumented */
+#define MSR_LX_SPARE_MSR_DIS_INIT_V_PRI	(1 << 7)	/* undocumented */
+#define MSR_LX_SPARE_MSR_DIS_VIFO_WM	(1 << 6)
+#define MSR_LX_SPARE_MSR_DIS_CWD_CHECK	(1 << 5)	/* undocumented */
+#define MSR_LX_SPARE_MSR_PIX8_PAN_FIX	(1 << 4)	/* undocumented */
+#define MSR_LX_SPARE_MSR_FIRST_REQ_MASK	(1 << 1)	/* undocumented */
+
+#endif
diff --git a/drivers/video/fbdev/geode/lxfb_core.c b/drivers/video/fbdev/geode/lxfb_core.c
new file mode 100644
index 000000000..41fda4984
--- /dev/null
+++ b/drivers/video/fbdev/geode/lxfb_core.c
@@ -0,0 +1,679 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Geode LX framebuffer driver.
+ *
+ * Copyright (C) 2007 Advanced Micro Devices, Inc.
+ * Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
+ */
+
+#include <linux/aperture.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/console.h>
+#include <linux/mm.h>
+#include <linux/suspend.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/uaccess.h>
+
+#include <asm/olpc.h>
+
+#include "lxfb.h"
+
+static char *mode_option;
+static int noclear, nopanel, nocrt;
+static int vram;
+static int vt_switch;
+
+/* Most of these modes are sorted in ascending order, but
+ * since the first entry in this table is the "default" mode,
+ * we try to make it something sane - 640x480-60 is sane
+ */
+
+static struct fb_videomode geode_modedb[] = {
+	/* 640x480-60 */
+	{ NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 640x400-70 */
+	{ NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2,
+	  FB_SYNC_HOR_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 640x480-70 */
+	{ NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 640x480-72 */
+	{ NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 640x480-75 */
+	{ NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 640x480-85 */
+	{ NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 640x480-90 */
+	{ NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 640x480-100 */
+	{ NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 640x480-60 */
+	{ NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-56 */
+	{ NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-60 */
+	{ NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-70 */
+	{ NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-72 */
+	{ NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-75 */
+	{ NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-85 */
+	{ NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-90 */
+	{ NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-100 */
+	{ NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 800x600-60 */
+	{ NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-60 */
+	{ NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-70 */
+	{ NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-72 */
+	{ NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-75 */
+	{ NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-85 */
+	{ NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-90 */
+	{ NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-100 */
+	{ NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1024x768-60 */
+	{ NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-60 */
+	{ NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-70 */
+	{ NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-72 */
+	{ NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-75 */
+	{ NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-85 */
+	{ NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-90 */
+	{ NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-100 */
+	{ NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1152x864-60 */
+	{ NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-60 */
+	{ NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-70 */
+	{ NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-72 */
+	{ NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-75 */
+	{ NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-85 */
+	{ NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-90 */
+	{ NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-100 */
+	{ NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1280x1024-60 */
+	{ NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-60 */
+	{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-70 */
+	{ NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-72 */
+	{ NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-75 */
+	{ NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-85 */
+	{ NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-90 */
+	{ NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-100 */
+	{ NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1600x1200-60 */
+	{ NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 },
+	/* 1920x1440-60 */
+	{ NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1920x1440-70 */
+	{ NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1920x1440-72 */
+	{ NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1920x1440-75 */
+	{ NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+	/* 1920x1440-85 */
+	{ NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3,
+	  0, FB_VMODE_NONINTERLACED, 0 },
+};
+
+static struct fb_videomode olpc_dcon_modedb[] = {
+	/* The only mode the DCON has is 1200x900 */
+	{ NULL, 50, 1200, 900, 17460, 24, 8, 4, 5, 8, 3,
+	  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	  FB_VMODE_NONINTERLACED, 0 }
+};
+
+static void get_modedb(struct fb_videomode **modedb, unsigned int *size)
+{
+	if (olpc_has_dcon()) {
+		*modedb = (struct fb_videomode *) olpc_dcon_modedb;
+		*size = ARRAY_SIZE(olpc_dcon_modedb);
+	} else {
+		*modedb = (struct fb_videomode *) geode_modedb;
+		*size = ARRAY_SIZE(geode_modedb);
+	}
+}
+
+static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	if (!var->pixclock)
+		return -EINVAL;
+
+	if (var->xres > 1920 || var->yres > 1440)
+		return -EINVAL;
+
+	if (var->bits_per_pixel == 32) {
+		var->red.offset   = 16; var->red.length   = 8;
+		var->green.offset =  8; var->green.length = 8;
+		var->blue.offset  =  0; var->blue.length  = 8;
+	} else if (var->bits_per_pixel == 16) {
+		var->red.offset   = 11; var->red.length   = 5;
+		var->green.offset =  5; var->green.length = 6;
+		var->blue.offset  =  0; var->blue.length  = 5;
+	} else if (var->bits_per_pixel == 8) {
+		var->red.offset   = 0; var->red.length   = 8;
+		var->green.offset = 0; var->green.length = 8;
+		var->blue.offset  = 0; var->blue.length  = 8;
+	} else
+		return -EINVAL;
+
+	var->transp.offset = 0; var->transp.length = 0;
+
+	/* Enough video memory? */
+	if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres)
+	    > info->fix.smem_len)
+	  return -EINVAL;
+
+	return 0;
+}
+
+static int lxfb_set_par(struct fb_info *info)
+{
+	if (info->var.bits_per_pixel > 8)
+		info->fix.visual = FB_VISUAL_TRUECOLOR;
+	else
+		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+
+	info->fix.line_length = lx_get_pitch(info->var.xres,
+		info->var.bits_per_pixel);
+
+	lx_set_mode(info);
+	return 0;
+}
+
+static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
+{
+	chan &= 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;
+
+	ret = aperture_remove_conflicting_pci_devices(pdev, "lxfb");
+	if (ret)
+		return ret;
+
+	info = lxfb_init_fbinfo(&pdev->dev);
+
+	if (info == NULL)
+		return -ENOMEM;
+
+	par = info->par;
+
+	ret = lxfb_map_video_memory(info, pdev);
+
+	if (ret < 0) {
+		dev_err(&pdev->dev,
+			"failed to map frame buffer or controller registers\n");
+		goto err;
+	}
+
+	/* Set up the desired outputs */
+
+	par->output = 0;
+	par->output |= (nopanel) ? 0 : OUTPUT_PANEL;
+	par->output |= (nocrt) ? 0 : OUTPUT_CRT;
+
+	/* Set up the mode database */
+
+	get_modedb(&modedb_ptr, &modedb_size);
+	ret = fb_find_mode(&info->var, info, mode_option,
+			   modedb_ptr, modedb_size, NULL, 16);
+
+	if (ret == 0 || ret == 4) {
+		dev_err(&pdev->dev, "could not find valid video mode\n");
+		ret = -EINVAL;
+		goto err;
+	}
+
+	/* Clear the screen of garbage, unless noclear was specified,
+	 * in which case we assume the user knows what he is doing */
+
+	if (!noclear)
+		memset_io(info->screen_base, 0, info->fix.smem_len);
+
+	/* Set the mode */
+
+	lxfb_check_var(&info->var, info);
+	lxfb_set_par(info);
+
+	pm_set_vt_switch(vt_switch);
+
+	if (register_framebuffer(info) < 0) {
+		ret = -EINVAL;
+		goto err;
+	}
+	pci_set_drvdata(pdev, info);
+	fb_info(info, "%s frame buffer device\n", info->fix.id);
+
+	return 0;
+
+err:
+	if (info->screen_base) {
+		iounmap(info->screen_base);
+		pci_release_region(pdev, 0);
+	}
+	if (par->gp_regs) {
+		iounmap(par->gp_regs);
+		pci_release_region(pdev, 1);
+	}
+	if (par->dc_regs) {
+		iounmap(par->dc_regs);
+		pci_release_region(pdev, 2);
+	}
+	if (par->vp_regs) {
+		iounmap(par->vp_regs);
+		pci_release_region(pdev, 3);
+	}
+
+	fb_dealloc_cmap(&info->cmap);
+	framebuffer_release(info);
+
+	return ret;
+}
+
+static void lxfb_remove(struct pci_dev *pdev)
+{
+	struct fb_info *info = pci_get_drvdata(pdev);
+	struct lxfb_par *par = info->par;
+
+	unregister_framebuffer(info);
+
+	iounmap(info->screen_base);
+	pci_release_region(pdev, 0);
+
+	iounmap(par->gp_regs);
+	pci_release_region(pdev, 1);
+
+	iounmap(par->dc_regs);
+	pci_release_region(pdev, 2);
+
+	iounmap(par->vp_regs);
+	pci_release_region(pdev, 3);
+
+	fb_dealloc_cmap(&info->cmap);
+	framebuffer_release(info);
+}
+
+static struct pci_device_id lxfb_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, lxfb_id_table);
+
+static const struct dev_pm_ops lxfb_pm_ops = {
+#ifdef CONFIG_PM_SLEEP
+	.suspend	= lxfb_suspend,
+	.resume		= lxfb_resume,
+	.freeze		= NULL,
+	.thaw		= lxfb_resume,
+	.poweroff	= NULL,
+	.restore	= lxfb_resume,
+#endif
+};
+
+static struct pci_driver lxfb_driver = {
+	.name		= "lxfb",
+	.id_table	= lxfb_id_table,
+	.probe		= lxfb_probe,
+	.remove		= lxfb_remove,
+	.driver.pm	= &lxfb_pm_ops,
+};
+
+#ifndef MODULE
+static int __init lxfb_setup(char *options)
+{
+	char *opt;
+
+	if (!options || !*options)
+		return 0;
+
+	while ((opt = strsep(&options, ",")) != NULL) {
+		if (!*opt)
+			continue;
+
+		if (!strcmp(opt, "noclear"))
+			noclear = 1;
+		else if (!strcmp(opt, "nopanel"))
+			nopanel = 1;
+		else if (!strcmp(opt, "nocrt"))
+			nocrt = 1;
+		else
+			mode_option = opt;
+	}
+
+	return 0;
+}
+#endif
+
+static int __init lxfb_init(void)
+{
+#ifndef MODULE
+	char *option = NULL;
+
+	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");
diff --git a/drivers/video/fbdev/geode/lxfb_ops.c b/drivers/video/fbdev/geode/lxfb_ops.c
new file mode 100644
index 000000000..32baaf59f
--- /dev/null
+++ b/drivers/video/fbdev/geode/lxfb_ops.c
@@ -0,0 +1,838 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Geode LX framebuffer driver
+ *
+ * Copyright (C) 2006-2007, Advanced Micro Devices,Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/uaccess.h>
+#include <linux/delay.h>
+#include <linux/cs5535.h>
+
+#include "lxfb.h"
+
+/* TODO
+ * Support panel scaling
+ * Add acceleration
+ * Add support for interlacing (TV out)
+ * Support compression
+ */
+
+/* This is the complete list of PLL frequencies that we can set -
+ * we will choose the closest match to the incoming clock.
+ * freq is the frequency of the dotclock * 1000 (for example,
+ * 24823 = 24.983 Mhz).
+ * pllval is the corresponding PLL value
+*/
+
+static const struct {
+  unsigned int pllval;
+  unsigned int freq;
+} pll_table[] = {
+  { 0x000131AC,   6231 },
+  { 0x0001215D,   6294 },
+  { 0x00011087,   6750 },
+  { 0x0001216C,   7081 },
+  { 0x0001218D,   7140 },
+  { 0x000110C9,   7800 },
+  { 0x00013147,   7875 },
+  { 0x000110A7,   8258 },
+  { 0x00012159,   8778 },
+  { 0x00014249,   8875 },
+  { 0x00010057,   9000 },
+  { 0x0001219A,   9472 },
+  { 0x00012158,   9792 },
+  { 0x00010045,  10000 },
+  { 0x00010089,  10791 },
+  { 0x000110E7,  11225 },
+  { 0x00012136,  11430 },
+  { 0x00013207,  12375 },
+  { 0x00012187,  12500 },
+  { 0x00014286,  14063 },
+  { 0x000110E5,  15016 },
+  { 0x00014214,  16250 },
+  { 0x00011105,  17045 },
+  { 0x000131E4,  18563 },
+  { 0x00013183,  18750 },
+  { 0x00014284,  19688 },
+  { 0x00011104,  20400 },
+  { 0x00016363,  23625 },
+  { 0x000031AC,  24923 },
+  { 0x0000215D,  25175 },
+  { 0x00001087,  27000 },
+  { 0x0000216C,  28322 },
+  { 0x0000218D,  28560 },
+  { 0x000010C9,  31200 },
+  { 0x00003147,  31500 },
+  { 0x000010A7,  33032 },
+  { 0x00002159,  35112 },
+  { 0x00004249,  35500 },
+  { 0x00000057,  36000 },
+  { 0x0000219A,  37889 },
+  { 0x00002158,  39168 },
+  { 0x00000045,  40000 },
+  { 0x00000089,  43163 },
+  { 0x000010E7,  44900 },
+  { 0x00002136,  45720 },
+  { 0x00003207,  49500 },
+  { 0x00002187,  50000 },
+  { 0x00004286,  56250 },
+  { 0x000010E5,  60065 },
+  { 0x00004214,  65000 },
+  { 0x00001105,  68179 },
+  { 0x000031E4,  74250 },
+  { 0x00003183,  75000 },
+  { 0x00004284,  78750 },
+  { 0x00001104,  81600 },
+  { 0x00006363,  94500 },
+  { 0x00005303,  97520 },
+  { 0x00002183, 100187 },
+  { 0x00002122, 101420 },
+  { 0x00001081, 108000 },
+  { 0x00006201, 113310 },
+  { 0x00000041, 119650 },
+  { 0x000041A1, 129600 },
+  { 0x00002182, 133500 },
+  { 0x000041B1, 135000 },
+  { 0x00000051, 144000 },
+  { 0x000041E1, 148500 },
+  { 0x000062D1, 157500 },
+  { 0x000031A1, 162000 },
+  { 0x00000061, 169203 },
+  { 0x00004231, 172800 },
+  { 0x00002151, 175500 },
+  { 0x000052E1, 189000 },
+  { 0x00000071, 192000 },
+  { 0x00003201, 198000 },
+  { 0x00004291, 202500 },
+  { 0x00001101, 204750 },
+  { 0x00007481, 218250 },
+  { 0x00004170, 229500 },
+  { 0x00006210, 234000 },
+  { 0x00003140, 251182 },
+  { 0x00006250, 261000 },
+  { 0x000041C0, 278400 },
+  { 0x00005220, 280640 },
+  { 0x00000050, 288000 },
+  { 0x000041E0, 297000 },
+  { 0x00002130, 320207 }
+};
+
+
+static void lx_set_dotpll(u32 pllval)
+{
+	u32 dotpll_lo, dotpll_hi;
+	int i;
+
+	rdmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
+
+	if ((dotpll_lo & MSR_GLCP_DOTPLL_LOCK) && (dotpll_hi == pllval))
+		return;
+
+	dotpll_hi = pllval;
+	dotpll_lo &= ~(MSR_GLCP_DOTPLL_BYPASS | MSR_GLCP_DOTPLL_HALFPIX);
+	dotpll_lo |= MSR_GLCP_DOTPLL_DOTRESET;
+
+	wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
+
+	/* Wait 100us for the PLL to lock */
+
+	udelay(100);
+
+	/* Now, loop for the lock bit */
+
+	for (i = 0; i < 1000; i++) {
+		rdmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
+		if (dotpll_lo & MSR_GLCP_DOTPLL_LOCK)
+			break;
+	}
+
+	/* Clear the reset bit */
+
+	dotpll_lo &= ~MSR_GLCP_DOTPLL_DOTRESET;
+	wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
+}
+
+/* Set the clock based on the frequency specified by the current mode */
+
+static void lx_set_clock(struct fb_info *info)
+{
+	unsigned int diff, min, best = 0;
+	unsigned int freq, i;
+
+	freq = (unsigned int) (1000000000 / info->var.pixclock);
+
+	min = abs(pll_table[0].freq - freq);
+
+	for (i = 0; i < ARRAY_SIZE(pll_table); i++) {
+		diff = abs(pll_table[i].freq - freq);
+		if (diff < min) {
+			min = diff;
+			best = i;
+		}
+	}
+
+	lx_set_dotpll(pll_table[best].pllval & 0x00017FFF);
+}
+
+static void lx_graphics_disable(struct fb_info *info)
+{
+	struct lxfb_par *par = info->par;
+	unsigned int val, gcfg;
+
+	/* Note:  This assumes that the video is in a quitet state */
+
+	write_vp(par, VP_A1T, 0);
+	write_vp(par, VP_A2T, 0);
+	write_vp(par, VP_A3T, 0);
+
+	/* Turn off the VGA and video enable */
+	val = read_dc(par, DC_GENERAL_CFG) & ~(DC_GENERAL_CFG_VGAE |
+			DC_GENERAL_CFG_VIDE);
+
+	write_dc(par, DC_GENERAL_CFG, val);
+
+	val = read_vp(par, VP_VCFG) & ~VP_VCFG_VID_EN;
+	write_vp(par, VP_VCFG, val);
+
+	write_dc(par, DC_IRQ, DC_IRQ_MASK | DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK |
+			DC_IRQ_STATUS | DC_IRQ_VIP_VSYNC_IRQ_STATUS);
+
+	val = read_dc(par, DC_GENLK_CTL) & ~DC_GENLK_CTL_GENLK_EN;
+	write_dc(par, DC_GENLK_CTL, val);
+
+	val = read_dc(par, DC_CLR_KEY);
+	write_dc(par, DC_CLR_KEY, val & ~DC_CLR_KEY_CLR_KEY_EN);
+
+	/* turn off the panel */
+	write_fp(par, FP_PM, read_fp(par, FP_PM) & ~FP_PM_P);
+
+	val = read_vp(par, VP_MISC) | VP_MISC_DACPWRDN;
+	write_vp(par, VP_MISC, val);
+
+	/* Turn off the display */
+
+	val = read_vp(par, VP_DCFG);
+	write_vp(par, VP_DCFG, val & ~(VP_DCFG_CRT_EN | VP_DCFG_HSYNC_EN |
+			VP_DCFG_VSYNC_EN | VP_DCFG_DAC_BL_EN));
+
+	gcfg = read_dc(par, DC_GENERAL_CFG);
+	gcfg &= ~(DC_GENERAL_CFG_CMPE | DC_GENERAL_CFG_DECE);
+	write_dc(par, DC_GENERAL_CFG, gcfg);
+
+	/* Turn off the TGEN */
+	val = read_dc(par, DC_DISPLAY_CFG);
+	val &= ~DC_DISPLAY_CFG_TGEN;
+	write_dc(par, DC_DISPLAY_CFG, val);
+
+	/* Wait 1000 usecs to ensure that the TGEN is clear */
+	udelay(1000);
+
+	/* Turn off the FIFO loader */
+
+	gcfg &= ~DC_GENERAL_CFG_DFLE;
+	write_dc(par, DC_GENERAL_CFG, gcfg);
+
+	/* Lastly, wait for the GP to go idle */
+
+	do {
+		val = read_gp(par, GP_BLT_STATUS);
+	} while ((val & GP_BLT_STATUS_PB) || !(val & GP_BLT_STATUS_CE));
+}
+
+static void lx_graphics_enable(struct fb_info *info)
+{
+	struct lxfb_par *par = info->par;
+	u32 temp, config;
+
+	/* Set the video request register */
+	write_vp(par, VP_VRR, 0);
+
+	/* Set up the polarities */
+
+	config = read_vp(par, VP_DCFG);
+
+	config &= ~(VP_DCFG_CRT_SYNC_SKW | VP_DCFG_PWR_SEQ_DELAY |
+			VP_DCFG_CRT_HSYNC_POL | VP_DCFG_CRT_VSYNC_POL);
+
+	config |= (VP_DCFG_CRT_SYNC_SKW_DEFAULT | VP_DCFG_PWR_SEQ_DELAY_DEFAULT
+			| VP_DCFG_GV_GAM);
+
+	if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
+		config |= VP_DCFG_CRT_HSYNC_POL;
+
+	if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
+		config |= VP_DCFG_CRT_VSYNC_POL;
+
+	if (par->output & OUTPUT_PANEL) {
+		u32 msrlo, msrhi;
+
+		write_fp(par, FP_PT1, 0);
+		temp = FP_PT2_SCRC;
+
+		if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
+			temp |= FP_PT2_HSP;
+
+		if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
+			temp |= FP_PT2_VSP;
+
+		write_fp(par, FP_PT2, temp);
+		write_fp(par, FP_DFC, FP_DFC_BC);
+
+		msrlo = MSR_LX_MSR_PADSEL_TFT_SEL_LOW;
+		msrhi = MSR_LX_MSR_PADSEL_TFT_SEL_HIGH;
+
+		wrmsr(MSR_LX_MSR_PADSEL, msrlo, msrhi);
+	}
+
+	if (par->output & OUTPUT_CRT) {
+		config |= VP_DCFG_CRT_EN | VP_DCFG_HSYNC_EN |
+				VP_DCFG_VSYNC_EN | VP_DCFG_DAC_BL_EN;
+	}
+
+	write_vp(par, VP_DCFG, config);
+
+	/* Turn the CRT dacs back on */
+
+	if (par->output & OUTPUT_CRT) {
+		temp = read_vp(par, VP_MISC);
+		temp &= ~(VP_MISC_DACPWRDN | VP_MISC_APWRDN);
+		write_vp(par, VP_MISC, temp);
+	}
+
+	/* Turn the panel on (if it isn't already) */
+	if (par->output & OUTPUT_PANEL)
+		write_fp(par, FP_PM, read_fp(par, FP_PM) | FP_PM_P);
+}
+
+unsigned int lx_framebuffer_size(void)
+{
+	unsigned int val;
+
+	if (!cs5535_has_vsa2()) {
+		uint32_t hi, lo;
+
+		/* The number of pages is (PMAX - PMIN)+1 */
+		rdmsr(MSR_GLIU_P2D_RO0, lo, hi);
+
+		/* PMAX */
+		val = ((hi & 0xff) << 12) | ((lo & 0xfff00000) >> 20);
+		/* PMIN */
+		val -= (lo & 0x000fffff);
+		val += 1;
+
+		/* The page size is 4k */
+		return (val << 12);
+	}
+
+	/* The frame buffer size is reported by a VSM in VSA II */
+	/* Virtual Register Class    = 0x02                     */
+	/* VG_MEM_SIZE (1MB units)   = 0x00                     */
+
+	outw(VSA_VR_UNLOCK, VSA_VRC_INDEX);
+	outw(VSA_VR_MEM_SIZE, VSA_VRC_INDEX);
+
+	val = (unsigned int)(inw(VSA_VRC_DATA)) & 0xFE;
+	return (val << 20);
+}
+
+void lx_set_mode(struct fb_info *info)
+{
+	struct lxfb_par *par = info->par;
+	u64 msrval;
+
+	unsigned int max, dv, val, size;
+
+	unsigned int gcfg, dcfg;
+	int hactive, hblankstart, hsyncstart, hsyncend, hblankend, htotal;
+	int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal;
+
+	/* Unlock the DC registers */
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
+
+	lx_graphics_disable(info);
+
+	lx_set_clock(info);
+
+	/* Set output mode */
+
+	rdmsrl(MSR_LX_GLD_MSR_CONFIG, msrval);
+	msrval &= ~MSR_LX_GLD_MSR_CONFIG_FMT;
+
+	if (par->output & OUTPUT_PANEL) {
+		msrval |= MSR_LX_GLD_MSR_CONFIG_FMT_FP;
+
+		if (par->output & OUTPUT_CRT)
+			msrval |= MSR_LX_GLD_MSR_CONFIG_FPC;
+		else
+			msrval &= ~MSR_LX_GLD_MSR_CONFIG_FPC;
+	} else
+		msrval |= MSR_LX_GLD_MSR_CONFIG_FMT_CRT;
+
+	wrmsrl(MSR_LX_GLD_MSR_CONFIG, msrval);
+
+	/* Clear the various buffers */
+	/* FIXME:  Adjust for panning here */
+
+	write_dc(par, DC_FB_ST_OFFSET, 0);
+	write_dc(par, DC_CB_ST_OFFSET, 0);
+	write_dc(par, DC_CURS_ST_OFFSET, 0);
+
+	/* FIXME: Add support for interlacing */
+	/* FIXME: Add support for scaling */
+
+	val = read_dc(par, DC_GENLK_CTL);
+	val &= ~(DC_GENLK_CTL_ALPHA_FLICK_EN | DC_GENLK_CTL_FLICK_EN |
+			DC_GENLK_CTL_FLICK_SEL_MASK);
+
+	/* Default scaling params */
+
+	write_dc(par, DC_GFX_SCALE, (0x4000 << 16) | 0x4000);
+	write_dc(par, DC_IRQ_FILT_CTL, 0);
+	write_dc(par, DC_GENLK_CTL, val);
+
+	/* FIXME:  Support compression */
+
+	if (info->fix.line_length > 4096)
+		dv = DC_DV_CTL_DV_LINE_SIZE_8K;
+	else if (info->fix.line_length > 2048)
+		dv = DC_DV_CTL_DV_LINE_SIZE_4K;
+	else if (info->fix.line_length > 1024)
+		dv = DC_DV_CTL_DV_LINE_SIZE_2K;
+	else
+		dv = DC_DV_CTL_DV_LINE_SIZE_1K;
+
+	max = info->fix.line_length * info->var.yres;
+	max = (max + 0x3FF) & 0xFFFFFC00;
+
+	write_dc(par, DC_DV_TOP, max | DC_DV_TOP_DV_TOP_EN);
+
+	val = read_dc(par, DC_DV_CTL) & ~DC_DV_CTL_DV_LINE_SIZE;
+	write_dc(par, DC_DV_CTL, val | dv);
+
+	size = info->var.xres * (info->var.bits_per_pixel >> 3);
+
+	write_dc(par, DC_GFX_PITCH, info->fix.line_length >> 3);
+	write_dc(par, DC_LINE_SIZE, (size + 7) >> 3);
+
+	/* Set default watermark values */
+
+	rdmsrl(MSR_LX_SPARE_MSR, msrval);
+
+	msrval &= ~(MSR_LX_SPARE_MSR_DIS_CFIFO_HGO
+			| MSR_LX_SPARE_MSR_VFIFO_ARB_SEL
+			| MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M
+			| MSR_LX_SPARE_MSR_WM_LPEN_OVRD);
+	msrval |= MSR_LX_SPARE_MSR_DIS_VIFO_WM |
+			MSR_LX_SPARE_MSR_DIS_INIT_V_PRI;
+	wrmsrl(MSR_LX_SPARE_MSR, msrval);
+
+	gcfg = DC_GENERAL_CFG_DFLE;   /* Display fifo enable */
+	gcfg |= (0x6 << DC_GENERAL_CFG_DFHPSL_SHIFT) | /* default priority */
+			(0xb << DC_GENERAL_CFG_DFHPEL_SHIFT);
+	gcfg |= DC_GENERAL_CFG_FDTY;  /* Set the frame dirty mode */
+
+	dcfg  = DC_DISPLAY_CFG_VDEN;  /* Enable video data */
+	dcfg |= DC_DISPLAY_CFG_GDEN;  /* Enable graphics */
+	dcfg |= DC_DISPLAY_CFG_TGEN;  /* Turn on the timing generator */
+	dcfg |= DC_DISPLAY_CFG_TRUP;  /* Update timings immediately */
+	dcfg |= DC_DISPLAY_CFG_PALB;  /* Palette bypass in > 8 bpp modes */
+	dcfg |= DC_DISPLAY_CFG_VISL;
+	dcfg |= DC_DISPLAY_CFG_DCEN;  /* Always center the display */
+
+	/* Set the current BPP mode */
+
+	switch (info->var.bits_per_pixel) {
+	case 8:
+		dcfg |= DC_DISPLAY_CFG_DISP_MODE_8BPP;
+		break;
+
+	case 16:
+		dcfg |= DC_DISPLAY_CFG_DISP_MODE_16BPP;
+		break;
+
+	case 32:
+	case 24:
+		dcfg |= DC_DISPLAY_CFG_DISP_MODE_24BPP;
+		break;
+	}
+
+	/* Now - set up the timings */
+
+	hactive = info->var.xres;
+	hblankstart = hactive;
+	hsyncstart = hblankstart + info->var.right_margin;
+	hsyncend =  hsyncstart + info->var.hsync_len;
+	hblankend = hsyncend + info->var.left_margin;
+	htotal = hblankend;
+
+	vactive = info->var.yres;
+	vblankstart = vactive;
+	vsyncstart = vblankstart + info->var.lower_margin;
+	vsyncend =  vsyncstart + info->var.vsync_len;
+	vblankend = vsyncend + info->var.upper_margin;
+	vtotal = vblankend;
+
+	write_dc(par, DC_H_ACTIVE_TIMING, (hactive - 1) | ((htotal - 1) << 16));
+	write_dc(par, DC_H_BLANK_TIMING,
+			(hblankstart - 1) | ((hblankend - 1) << 16));
+	write_dc(par, DC_H_SYNC_TIMING,
+			(hsyncstart - 1) | ((hsyncend - 1) << 16));
+
+	write_dc(par, DC_V_ACTIVE_TIMING, (vactive - 1) | ((vtotal - 1) << 16));
+	write_dc(par, DC_V_BLANK_TIMING,
+			(vblankstart - 1) | ((vblankend - 1) << 16));
+	write_dc(par, DC_V_SYNC_TIMING,
+			(vsyncstart - 1) | ((vsyncend - 1) << 16));
+
+	write_dc(par, DC_FB_ACTIVE,
+			(info->var.xres - 1) << 16 | (info->var.yres - 1));
+
+	/* And re-enable the graphics output */
+	lx_graphics_enable(info);
+
+	/* Write the two main configuration registers */
+	write_dc(par, DC_DISPLAY_CFG, dcfg);
+	write_dc(par, DC_ARB_CFG, 0);
+	write_dc(par, DC_GENERAL_CFG, gcfg);
+
+	/* Lock the DC registers */
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
+}
+
+void lx_set_palette_reg(struct fb_info *info, unsigned regno,
+			unsigned red, unsigned green, unsigned blue)
+{
+	struct lxfb_par *par = info->par;
+	int val;
+
+	/* Hardware palette is in RGB 8-8-8 format. */
+
+	val  = (red   << 8) & 0xff0000;
+	val |= (green)      & 0x00ff00;
+	val |= (blue  >> 8) & 0x0000ff;
+
+	write_dc(par, DC_PAL_ADDRESS, regno);
+	write_dc(par, DC_PAL_DATA, val);
+}
+
+int lx_blank_display(struct fb_info *info, int blank_mode)
+{
+	struct lxfb_par *par = info->par;
+	u32 dcfg, misc, fp_pm;
+	int blank, hsync, vsync;
+
+	/* CRT power saving modes. */
+	switch (blank_mode) {
+	case FB_BLANK_UNBLANK:
+		blank = 0; hsync = 1; vsync = 1;
+		break;
+	case FB_BLANK_NORMAL:
+		blank = 1; hsync = 1; vsync = 1;
+		break;
+	case FB_BLANK_VSYNC_SUSPEND:
+		blank = 1; hsync = 1; vsync = 0;
+		break;
+	case FB_BLANK_HSYNC_SUSPEND:
+		blank = 1; hsync = 0; vsync = 1;
+		break;
+	case FB_BLANK_POWERDOWN:
+		blank = 1; hsync = 0; vsync = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	dcfg = read_vp(par, VP_DCFG);
+	dcfg &= ~(VP_DCFG_DAC_BL_EN | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN |
+			VP_DCFG_CRT_EN);
+	if (!blank)
+		dcfg |= VP_DCFG_DAC_BL_EN | VP_DCFG_CRT_EN;
+	if (hsync)
+		dcfg |= VP_DCFG_HSYNC_EN;
+	if (vsync)
+		dcfg |= VP_DCFG_VSYNC_EN;
+
+	write_vp(par, VP_DCFG, dcfg);
+
+	misc = read_vp(par, VP_MISC);
+
+	if (vsync && hsync)
+		misc &= ~VP_MISC_DACPWRDN;
+	else
+		misc |= VP_MISC_DACPWRDN;
+
+	write_vp(par, VP_MISC, misc);
+
+	/* Power on/off flat panel */
+
+	if (par->output & OUTPUT_PANEL) {
+		fp_pm = read_fp(par, FP_PM);
+		if (blank_mode == FB_BLANK_POWERDOWN)
+			fp_pm &= ~FP_PM_P;
+		else
+			fp_pm |= FP_PM_P;
+		write_fp(par, FP_PM, fp_pm);
+	}
+
+	return 0;
+}
+
+static void lx_save_regs(struct lxfb_par *par)
+{
+	uint32_t filt;
+	int i;
+
+	/* wait for the BLT engine to stop being busy */
+	do {
+		i = read_gp(par, GP_BLT_STATUS);
+	} while ((i & GP_BLT_STATUS_PB) || !(i & GP_BLT_STATUS_CE));
+
+	/* save MSRs */
+	rdmsrl(MSR_LX_MSR_PADSEL, par->msr.padsel);
+	rdmsrl(MSR_GLCP_DOTPLL, par->msr.dotpll);
+	rdmsrl(MSR_LX_GLD_MSR_CONFIG, par->msr.dfglcfg);
+	rdmsrl(MSR_LX_SPARE_MSR, par->msr.dcspare);
+
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
+
+	/* save registers */
+	memcpy(par->gp, par->gp_regs, sizeof(par->gp));
+	memcpy(par->dc, par->dc_regs, sizeof(par->dc));
+	memcpy(par->vp, par->vp_regs, sizeof(par->vp));
+	memcpy(par->fp, par->vp_regs + VP_FP_START, sizeof(par->fp));
+
+	/* save the display controller palette */
+	write_dc(par, DC_PAL_ADDRESS, 0);
+	for (i = 0; i < ARRAY_SIZE(par->dc_pal); i++)
+		par->dc_pal[i] = read_dc(par, DC_PAL_DATA);
+
+	/* save the video processor palette */
+	write_vp(par, VP_PAR, 0);
+	for (i = 0; i < ARRAY_SIZE(par->vp_pal); i++)
+		par->vp_pal[i] = read_vp(par, VP_PDR);
+
+	/* save the horizontal filter coefficients */
+	filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
+	for (i = 0; i < ARRAY_SIZE(par->hcoeff); i += 2) {
+		write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
+		par->hcoeff[i] = read_dc(par, DC_FILT_COEFF1);
+		par->hcoeff[i + 1] = read_dc(par, DC_FILT_COEFF2);
+	}
+
+	/* save the vertical filter coefficients */
+	filt &= ~DC_IRQ_FILT_CTL_H_FILT_SEL;
+	for (i = 0; i < ARRAY_SIZE(par->vcoeff); i++) {
+		write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
+		par->vcoeff[i] = read_dc(par, DC_FILT_COEFF1);
+	}
+
+	/* save video coeff ram */
+	memcpy(par->vp_coeff, par->vp_regs + VP_VCR, sizeof(par->vp_coeff));
+}
+
+static void lx_restore_gfx_proc(struct lxfb_par *par)
+{
+	int i;
+
+	/* a bunch of registers require GP_RASTER_MODE to be set first */
+	write_gp(par, GP_RASTER_MODE, par->gp[GP_RASTER_MODE]);
+
+	for (i = 0; i < ARRAY_SIZE(par->gp); i++) {
+		switch (i) {
+		case GP_RASTER_MODE:
+		case GP_VECTOR_MODE:
+		case GP_BLT_MODE:
+		case GP_BLT_STATUS:
+		case GP_HST_SRC:
+			/* FIXME: restore LUT data */
+		case GP_LUT_INDEX:
+		case GP_LUT_DATA:
+			/* don't restore these registers */
+			break;
+
+		default:
+			write_gp(par, i, par->gp[i]);
+		}
+	}
+}
+
+static void lx_restore_display_ctlr(struct lxfb_par *par)
+{
+	uint32_t filt;
+	int i;
+
+	wrmsrl(MSR_LX_SPARE_MSR, par->msr.dcspare);
+
+	for (i = 0; i < ARRAY_SIZE(par->dc); i++) {
+		switch (i) {
+		case DC_UNLOCK:
+			/* unlock the DC; runs first */
+			write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
+			break;
+
+		case DC_GENERAL_CFG:
+		case DC_DISPLAY_CFG:
+			/* disable all while restoring */
+			write_dc(par, i, 0);
+			break;
+
+		case DC_DV_CTL:
+			/* set all ram to dirty */
+			write_dc(par, i, par->dc[i] | DC_DV_CTL_CLEAR_DV_RAM);
+			break;
+
+		case DC_RSVD_1:
+		case DC_RSVD_2:
+		case DC_RSVD_3:
+		case DC_LINE_CNT:
+		case DC_PAL_ADDRESS:
+		case DC_PAL_DATA:
+		case DC_DFIFO_DIAG:
+		case DC_CFIFO_DIAG:
+		case DC_FILT_COEFF1:
+		case DC_FILT_COEFF2:
+		case DC_RSVD_4:
+		case DC_RSVD_5:
+			/* don't restore these registers */
+			break;
+
+		default:
+			write_dc(par, i, par->dc[i]);
+		}
+	}
+
+	/* restore the palette */
+	write_dc(par, DC_PAL_ADDRESS, 0);
+	for (i = 0; i < ARRAY_SIZE(par->dc_pal); i++)
+		write_dc(par, DC_PAL_DATA, par->dc_pal[i]);
+
+	/* restore the horizontal filter coefficients */
+	filt = par->dc[DC_IRQ_FILT_CTL] | DC_IRQ_FILT_CTL_H_FILT_SEL;
+	for (i = 0; i < ARRAY_SIZE(par->hcoeff); i += 2) {
+		write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
+		write_dc(par, DC_FILT_COEFF1, par->hcoeff[i]);
+		write_dc(par, DC_FILT_COEFF2, par->hcoeff[i + 1]);
+	}
+
+	/* restore the vertical filter coefficients */
+	filt &= ~DC_IRQ_FILT_CTL_H_FILT_SEL;
+	for (i = 0; i < ARRAY_SIZE(par->vcoeff); i++) {
+		write_dc(par, DC_IRQ_FILT_CTL, (filt & 0xffffff00) | i);
+		write_dc(par, DC_FILT_COEFF1, par->vcoeff[i]);
+	}
+}
+
+static void lx_restore_video_proc(struct lxfb_par *par)
+{
+	int i;
+
+	wrmsrl(MSR_LX_GLD_MSR_CONFIG, par->msr.dfglcfg);
+	wrmsrl(MSR_LX_MSR_PADSEL, par->msr.padsel);
+
+	for (i = 0; i < ARRAY_SIZE(par->vp); i++) {
+		switch (i) {
+		case VP_VCFG:
+		case VP_DCFG:
+		case VP_PAR:
+		case VP_PDR:
+		case VP_CCS:
+		case VP_RSVD_0:
+		/* case VP_VDC: */ /* why should this not be restored? */
+		case VP_RSVD_1:
+		case VP_CRC32:
+			/* don't restore these registers */
+			break;
+
+		default:
+			write_vp(par, i, par->vp[i]);
+		}
+	}
+
+	/* restore video processor palette */
+	write_vp(par, VP_PAR, 0);
+	for (i = 0; i < ARRAY_SIZE(par->vp_pal); i++)
+		write_vp(par, VP_PDR, par->vp_pal[i]);
+
+	/* restore video coeff ram */
+	memcpy(par->vp_regs + VP_VCR, par->vp_coeff, sizeof(par->vp_coeff));
+}
+
+static void lx_restore_regs(struct lxfb_par *par)
+{
+	int i;
+
+	lx_set_dotpll((u32) (par->msr.dotpll >> 32));
+	lx_restore_gfx_proc(par);
+	lx_restore_display_ctlr(par);
+	lx_restore_video_proc(par);
+
+	/* Flat Panel */
+	for (i = 0; i < ARRAY_SIZE(par->fp); i++) {
+		switch (i) {
+		case FP_PM:
+		case FP_RSVD_0:
+		case FP_RSVD_1:
+		case FP_RSVD_2:
+		case FP_RSVD_3:
+		case FP_RSVD_4:
+			/* don't restore these registers */
+			break;
+
+		default:
+			write_fp(par, i, par->fp[i]);
+		}
+	}
+
+	/* control the panel */
+	if (par->fp[FP_PM] & FP_PM_P) {
+		/* power on the panel if not already power{ed,ing} on */
+		if (!(read_fp(par, FP_PM) &
+				(FP_PM_PANEL_ON|FP_PM_PANEL_PWR_UP)))
+			write_fp(par, FP_PM, par->fp[FP_PM]);
+	} else {
+		/* power down the panel if not already power{ed,ing} down */
+		if (!(read_fp(par, FP_PM) &
+				(FP_PM_PANEL_OFF|FP_PM_PANEL_PWR_DOWN)))
+			write_fp(par, FP_PM, par->fp[FP_PM]);
+	}
+
+	/* turn everything on */
+	write_vp(par, VP_VCFG, par->vp[VP_VCFG]);
+	write_vp(par, VP_DCFG, par->vp[VP_DCFG]);
+	write_dc(par, DC_DISPLAY_CFG, par->dc[DC_DISPLAY_CFG]);
+	/* do this last; it will enable the FIFO load */
+	write_dc(par, DC_GENERAL_CFG, par->dc[DC_GENERAL_CFG]);
+
+	/* lock the door behind us */
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
+}
+
+int lx_powerdown(struct fb_info *info)
+{
+	struct lxfb_par *par = info->par;
+
+	if (par->powered_down)
+		return 0;
+
+	lx_save_regs(par);
+	lx_graphics_disable(info);
+
+	par->powered_down = 1;
+	return 0;
+}
+
+int lx_powerup(struct fb_info *info)
+{
+	struct lxfb_par *par = info->par;
+
+	if (!par->powered_down)
+		return 0;
+
+	lx_restore_regs(par);
+
+	par->powered_down = 0;
+	return 0;
+}
diff --git a/drivers/video/fbdev/geode/suspend_gx.c b/drivers/video/fbdev/geode/suspend_gx.c
new file mode 100644
index 000000000..8c49d4e98
--- /dev/null
+++ b/drivers/video/fbdev/geode/suspend_gx.c
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2007 Advanced Micro Devices, Inc.
+ *   Copyright (C) 2008 Andres Salomon <dilinger@debian.org>
+ */
+#include <linux/fb.h>
+#include <asm/io.h>
+#include <asm/msr.h>
+#include <linux/cs5535.h>
+#include <asm/delay.h>
+
+#include "gxfb.h"
+
+static void gx_save_regs(struct gxfb_par *par)
+{
+	int i;
+
+	/* wait for the BLT engine to stop being busy */
+	do {
+		i = read_gp(par, GP_BLT_STATUS);
+	} while (i & (GP_BLT_STATUS_BLT_PENDING | GP_BLT_STATUS_BLT_BUSY));
+
+	/* save MSRs */
+	rdmsrl(MSR_GX_MSR_PADSEL, par->msr.padsel);
+	rdmsrl(MSR_GLCP_DOTPLL, par->msr.dotpll);
+
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
+
+	/* save registers */
+	memcpy(par->gp, par->gp_regs, sizeof(par->gp));
+	memcpy(par->dc, par->dc_regs, sizeof(par->dc));
+	memcpy(par->vp, par->vid_regs, sizeof(par->vp));
+	memcpy(par->fp, par->vid_regs + VP_FP_START, sizeof(par->fp));
+
+	/* save the palette */
+	write_dc(par, DC_PAL_ADDRESS, 0);
+	for (i = 0; i < ARRAY_SIZE(par->pal); i++)
+		par->pal[i] = read_dc(par, DC_PAL_DATA);
+}
+
+static void gx_set_dotpll(uint32_t dotpll_hi)
+{
+	uint32_t dotpll_lo;
+	int i;
+
+	rdmsrl(MSR_GLCP_DOTPLL, dotpll_lo);
+	dotpll_lo |= MSR_GLCP_DOTPLL_DOTRESET;
+	dotpll_lo &= ~MSR_GLCP_DOTPLL_BYPASS;
+	wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
+
+	/* wait for the PLL to lock */
+	for (i = 0; i < 200; i++) {
+		rdmsrl(MSR_GLCP_DOTPLL, dotpll_lo);
+		if (dotpll_lo & MSR_GLCP_DOTPLL_LOCK)
+			break;
+		udelay(1);
+	}
+
+	/* PLL set, unlock */
+	dotpll_lo &= ~MSR_GLCP_DOTPLL_DOTRESET;
+	wrmsr(MSR_GLCP_DOTPLL, dotpll_lo, dotpll_hi);
+}
+
+static void gx_restore_gfx_proc(struct gxfb_par *par)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(par->gp); i++) {
+		switch (i) {
+		case GP_VECTOR_MODE:
+		case GP_BLT_MODE:
+		case GP_BLT_STATUS:
+		case GP_HST_SRC:
+			/* don't restore these registers */
+			break;
+		default:
+			write_gp(par, i, par->gp[i]);
+		}
+	}
+}
+
+static void gx_restore_display_ctlr(struct gxfb_par *par)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(par->dc); i++) {
+		switch (i) {
+		case DC_UNLOCK:
+			/* unlock the DC; runs first */
+			write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
+			break;
+
+		case DC_GENERAL_CFG:
+			/* write without the enables */
+			write_dc(par, i, par->dc[i] & ~(DC_GENERAL_CFG_VIDE |
+					DC_GENERAL_CFG_ICNE |
+					DC_GENERAL_CFG_CURE |
+					DC_GENERAL_CFG_DFLE));
+			break;
+
+		case DC_DISPLAY_CFG:
+			/* write without the enables */
+			write_dc(par, i, par->dc[i] & ~(DC_DISPLAY_CFG_VDEN |
+					DC_DISPLAY_CFG_GDEN |
+					DC_DISPLAY_CFG_TGEN));
+			break;
+
+		case DC_RSVD_0:
+		case DC_RSVD_1:
+		case DC_RSVD_2:
+		case DC_RSVD_3:
+		case DC_RSVD_4:
+		case DC_LINE_CNT:
+		case DC_PAL_ADDRESS:
+		case DC_PAL_DATA:
+		case DC_DFIFO_DIAG:
+		case DC_CFIFO_DIAG:
+		case DC_RSVD_5:
+			/* don't restore these registers */
+			break;
+		default:
+			write_dc(par, i, par->dc[i]);
+		}
+	}
+
+	/* restore the palette */
+	write_dc(par, DC_PAL_ADDRESS, 0);
+	for (i = 0; i < ARRAY_SIZE(par->pal); i++)
+		write_dc(par, DC_PAL_DATA, par->pal[i]);
+}
+
+static void gx_restore_video_proc(struct gxfb_par *par)
+{
+	int i;
+
+	wrmsrl(MSR_GX_MSR_PADSEL, par->msr.padsel);
+
+	for (i = 0; i < ARRAY_SIZE(par->vp); i++) {
+		switch (i) {
+		case VP_VCFG:
+			/* don't enable video yet */
+			write_vp(par, i, par->vp[i] & ~VP_VCFG_VID_EN);
+			break;
+
+		case VP_DCFG:
+			/* don't enable CRT yet */
+			write_vp(par, i, par->vp[i] &
+					~(VP_DCFG_DAC_BL_EN | VP_DCFG_VSYNC_EN |
+					VP_DCFG_HSYNC_EN | VP_DCFG_CRT_EN));
+			break;
+
+		case VP_GAR:
+		case VP_GDR:
+		case VP_RSVD_0:
+		case VP_RSVD_1:
+		case VP_RSVD_2:
+		case VP_RSVD_3:
+		case VP_CRC32:
+		case VP_AWT:
+		case VP_VTM:
+			/* don't restore these registers */
+			break;
+		default:
+			write_vp(par, i, par->vp[i]);
+		}
+	}
+}
+
+static void gx_restore_regs(struct gxfb_par *par)
+{
+	int i;
+
+	gx_set_dotpll((uint32_t) (par->msr.dotpll >> 32));
+	gx_restore_gfx_proc(par);
+	gx_restore_display_ctlr(par);
+	gx_restore_video_proc(par);
+
+	/* Flat Panel */
+	for (i = 0; i < ARRAY_SIZE(par->fp); i++) {
+		if (i != FP_PM && i != FP_RSVD_0)
+			write_fp(par, i, par->fp[i]);
+	}
+}
+
+static void gx_disable_graphics(struct gxfb_par *par)
+{
+	/* shut down the engine */
+	write_vp(par, VP_VCFG, par->vp[VP_VCFG] & ~VP_VCFG_VID_EN);
+	write_vp(par, VP_DCFG, par->vp[VP_DCFG] & ~(VP_DCFG_DAC_BL_EN |
+			VP_DCFG_VSYNC_EN | VP_DCFG_HSYNC_EN | VP_DCFG_CRT_EN));
+
+	/* turn off the flat panel */
+	write_fp(par, FP_PM, par->fp[FP_PM] & ~FP_PM_P);
+
+
+	/* turn off display */
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
+	write_dc(par, DC_GENERAL_CFG, par->dc[DC_GENERAL_CFG] &
+			~(DC_GENERAL_CFG_VIDE | DC_GENERAL_CFG_ICNE |
+			DC_GENERAL_CFG_CURE | DC_GENERAL_CFG_DFLE));
+	write_dc(par, DC_DISPLAY_CFG, par->dc[DC_DISPLAY_CFG] &
+			~(DC_DISPLAY_CFG_VDEN | DC_DISPLAY_CFG_GDEN |
+			DC_DISPLAY_CFG_TGEN));
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
+}
+
+static void gx_enable_graphics(struct gxfb_par *par)
+{
+	uint32_t fp;
+
+	fp = read_fp(par, FP_PM);
+	if (par->fp[FP_PM] & FP_PM_P) {
+		/* power on the panel if not already power{ed,ing} on */
+		if (!(fp & (FP_PM_PANEL_ON|FP_PM_PANEL_PWR_UP)))
+			write_fp(par, FP_PM, par->fp[FP_PM]);
+	} else {
+		/* power down the panel if not already power{ed,ing} down */
+		if (!(fp & (FP_PM_PANEL_OFF|FP_PM_PANEL_PWR_DOWN)))
+			write_fp(par, FP_PM, par->fp[FP_PM]);
+	}
+
+	/* turn everything on */
+	write_vp(par, VP_VCFG, par->vp[VP_VCFG]);
+	write_vp(par, VP_DCFG, par->vp[VP_DCFG]);
+	write_dc(par, DC_DISPLAY_CFG, par->dc[DC_DISPLAY_CFG]);
+	/* do this last; it will enable the FIFO load */
+	write_dc(par, DC_GENERAL_CFG, par->dc[DC_GENERAL_CFG]);
+
+	/* lock the door behind us */
+	write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
+}
+
+int gx_powerdown(struct fb_info *info)
+{
+	struct gxfb_par *par = info->par;
+
+	if (par->powered_down)
+		return 0;
+
+	gx_save_regs(par);
+	gx_disable_graphics(par);
+
+	par->powered_down = 1;
+	return 0;
+}
+
+int gx_powerup(struct fb_info *info)
+{
+	struct gxfb_par *par = info->par;
+
+	if (!par->powered_down)
+		return 0;
+
+	gx_restore_regs(par);
+	gx_enable_graphics(par);
+
+	par->powered_down  = 0;
+	return 0;
+}
diff --git a/drivers/video/fbdev/geode/video_cs5530.c b/drivers/video/fbdev/geode/video_cs5530.c
new file mode 100644
index 000000000..de1c60279
--- /dev/null
+++ b/drivers/video/fbdev/geode/video_cs5530.c
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * drivers/video/geode/video_cs5530.c
+ *   -- CS5530 video device
+ *
+ * Copyright (C) 2005 Arcom Control Systems Ltd.
+ *
+ * Based on AMD's original 2.4 driver:
+ *   Copyright (C) 2004 Advanced Micro Devices, Inc.
+ */
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+
+#include "geodefb.h"
+#include "video_cs5530.h"
+
+/*
+ * CS5530 PLL table. This maps pixclocks to the appropriate PLL register
+ * value.
+ */
+struct cs5530_pll_entry {
+	long pixclock; /* ps */
+	u32 pll_value;
+};
+
+static const struct cs5530_pll_entry cs5530_pll_table[] = {
+	{ 39721, 0x31C45801, }, /*  25.1750 MHz */
+	{ 35308, 0x20E36802, }, /*  28.3220 */
+	{ 31746, 0x33915801, }, /*  31.5000 */
+	{ 27777, 0x31EC4801, }, /*  36.0000 */
+	{ 26666, 0x21E22801, }, /*  37.5000 */
+	{ 25000, 0x33088801, }, /*  40.0000 */
+	{ 22271, 0x33E22801, }, /*  44.9000 */
+	{ 20202, 0x336C4801, }, /*  49.5000 */
+	{ 20000, 0x23088801, }, /*  50.0000 */
+	{ 19860, 0x23088801, }, /*  50.3500 */
+	{ 18518, 0x3708A801, }, /*  54.0000 */
+	{ 17777, 0x23E36802, }, /*  56.2500 */
+	{ 17733, 0x23E36802, }, /*  56.3916 */
+	{ 17653, 0x23E36802, }, /*  56.6444 */
+	{ 16949, 0x37C45801, }, /*  59.0000 */
+	{ 15873, 0x23EC4801, }, /*  63.0000 */
+	{ 15384, 0x37911801, }, /*  65.0000 */
+	{ 14814, 0x37963803, }, /*  67.5000 */
+	{ 14124, 0x37058803, }, /*  70.8000 */
+	{ 13888, 0x3710C805, }, /*  72.0000 */
+	{ 13333, 0x37E22801, }, /*  75.0000 */
+	{ 12698, 0x27915801, }, /*  78.7500 */
+	{ 12500, 0x37D8D802, }, /*  80.0000 */
+	{ 11135, 0x27588802, }, /*  89.8000 */
+	{ 10582, 0x27EC4802, }, /*  94.5000 */
+	{ 10101, 0x27AC6803, }, /*  99.0000 */
+	{ 10000, 0x27088801, }, /* 100.0000 */
+	{  9259, 0x2710C805, }, /* 108.0000 */
+	{  8888, 0x27E36802, }, /* 112.5000 */
+	{  7692, 0x27C58803, }, /* 130.0000 */
+	{  7407, 0x27316803, }, /* 135.0000 */
+	{  6349, 0x2F915801, }, /* 157.5000 */
+	{  6172, 0x2F08A801, }, /* 162.0000 */
+	{  5714, 0x2FB11802, }, /* 175.0000 */
+	{  5291, 0x2FEC4802, }, /* 189.0000 */
+	{  4950, 0x2F963803, }, /* 202.0000 */
+	{  4310, 0x2FB1B802, }, /* 232.0000 */
+};
+
+static void cs5530_set_dclk_frequency(struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+	int i;
+	u32 value;
+	long min, diff;
+
+	/* Search the table for the closest pixclock. */
+	value = cs5530_pll_table[0].pll_value;
+	min = cs5530_pll_table[0].pixclock - info->var.pixclock;
+	if (min < 0) min = -min;
+	for (i = 1; i < ARRAY_SIZE(cs5530_pll_table); i++) {
+		diff = cs5530_pll_table[i].pixclock - info->var.pixclock;
+		if (diff < 0L) diff = -diff;
+		if (diff < min) {
+			min = diff;
+			value = cs5530_pll_table[i].pll_value;
+		}
+	}
+
+	writel(value, par->vid_regs + CS5530_DOT_CLK_CONFIG);
+	writel(value | 0x80000100, par->vid_regs + CS5530_DOT_CLK_CONFIG); /* set reset and bypass */
+	udelay(500); /* wait for PLL to settle */
+	writel(value & 0x7FFFFFFF, par->vid_regs + CS5530_DOT_CLK_CONFIG); /* clear reset */
+	writel(value & 0x7FFFFEFF, par->vid_regs + CS5530_DOT_CLK_CONFIG); /* clear bypass */
+}
+
+static void cs5530_configure_display(struct fb_info *info)
+{
+	struct geodefb_par *par = info->par;
+	u32 dcfg;
+
+	dcfg = readl(par->vid_regs + CS5530_DISPLAY_CONFIG);
+
+	/* Clear bits from existing mode. */
+	dcfg &= ~(CS5530_DCFG_CRT_SYNC_SKW_MASK | CS5530_DCFG_PWR_SEQ_DLY_MASK
+		  | CS5530_DCFG_CRT_HSYNC_POL   | CS5530_DCFG_CRT_VSYNC_POL
+		  | CS5530_DCFG_FP_PWR_EN       | CS5530_DCFG_FP_DATA_EN
+		  | CS5530_DCFG_DAC_PWR_EN      | CS5530_DCFG_VSYNC_EN
+		  | CS5530_DCFG_HSYNC_EN);
+
+	/* Set default sync skew and power sequence delays.  */
+	dcfg |= (CS5530_DCFG_CRT_SYNC_SKW_INIT | CS5530_DCFG_PWR_SEQ_DLY_INIT
+		 | CS5530_DCFG_GV_PAL_BYP);
+
+	/* Enable DACs, hsync and vsync for CRTs */
+	if (par->enable_crt) {
+		dcfg |= CS5530_DCFG_DAC_PWR_EN;
+		dcfg |= CS5530_DCFG_HSYNC_EN | CS5530_DCFG_VSYNC_EN;
+	}
+	/* Enable panel power and data if using a flat panel. */
+	if (par->panel_x > 0) {
+		dcfg |= CS5530_DCFG_FP_PWR_EN;
+		dcfg |= CS5530_DCFG_FP_DATA_EN;
+	}
+
+	/* Sync polarities. */
+	if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
+		dcfg |= CS5530_DCFG_CRT_HSYNC_POL;
+	if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
+		dcfg |= CS5530_DCFG_CRT_VSYNC_POL;
+
+	writel(dcfg, par->vid_regs + CS5530_DISPLAY_CONFIG);
+}
+
+static int cs5530_blank_display(struct fb_info *info, int blank_mode)
+{
+	struct geodefb_par *par = info->par;
+	u32 dcfg;
+	int blank, hsync, vsync;
+
+	switch (blank_mode) {
+	case FB_BLANK_UNBLANK:
+		blank = 0; hsync = 1; vsync = 1;
+		break;
+	case FB_BLANK_NORMAL:
+		blank = 1; hsync = 1; vsync = 1;
+		break;
+	case FB_BLANK_VSYNC_SUSPEND:
+		blank = 1; hsync = 1; vsync = 0;
+		break;
+	case FB_BLANK_HSYNC_SUSPEND:
+		blank = 1; hsync = 0; vsync = 1;
+		break;
+	case FB_BLANK_POWERDOWN:
+		blank = 1; hsync = 0; vsync = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	dcfg = readl(par->vid_regs + CS5530_DISPLAY_CONFIG);
+
+	dcfg &= ~(CS5530_DCFG_DAC_BL_EN | CS5530_DCFG_DAC_PWR_EN
+		  | CS5530_DCFG_HSYNC_EN | CS5530_DCFG_VSYNC_EN
+		  | CS5530_DCFG_FP_DATA_EN | CS5530_DCFG_FP_PWR_EN);
+
+	if (par->enable_crt) {
+		if (!blank)
+			dcfg |= CS5530_DCFG_DAC_BL_EN | CS5530_DCFG_DAC_PWR_EN;
+		if (hsync)
+			dcfg |= CS5530_DCFG_HSYNC_EN;
+		if (vsync)
+			dcfg |= CS5530_DCFG_VSYNC_EN;
+	}
+	if (par->panel_x > 0) {
+		if (!blank)
+			dcfg |= CS5530_DCFG_FP_DATA_EN;
+		if (hsync && vsync)
+			dcfg |= CS5530_DCFG_FP_PWR_EN;
+	}
+
+	writel(dcfg, par->vid_regs + CS5530_DISPLAY_CONFIG);
+
+	return 0;
+}
+
+const struct geode_vid_ops cs5530_vid_ops = {
+	.set_dclk          = cs5530_set_dclk_frequency,
+	.configure_display = cs5530_configure_display,
+	.blank_display     = cs5530_blank_display,
+};
diff --git a/drivers/video/fbdev/geode/video_cs5530.h b/drivers/video/fbdev/geode/video_cs5530.h
new file mode 100644
index 000000000..34ac9bfa1
--- /dev/null
+++ b/drivers/video/fbdev/geode/video_cs5530.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * drivers/video/geode/video_cs5530.h
+ *   -- CS5530 video device
+ *
+ * Copyright (C) 2005 Arcom Control Systems Ltd.
+ *
+ * Based on AMD's original 2.4 driver:
+ *   Copyright (C) 2004 Advanced Micro Devices, Inc.
+ */
+#ifndef __VIDEO_CS5530_H__
+#define __VIDEO_CS5530_H__
+
+extern const struct geode_vid_ops cs5530_vid_ops;
+
+/* CS5530 Video device registers */
+
+#define CS5530_VIDEO_CONFIG	0x0000
+#  define CS5530_VCFG_VID_EN			0x00000001
+#  define CS5530_VCFG_VID_REG_UPDATE		0x00000002
+#  define CS5530_VCFG_VID_INP_FORMAT		0x0000000C
+#  define CS5530_VCFG_8_BIT_4_2_0		0x00000004
+#  define CS5530_VCFG_16_BIT_4_2_0		0x00000008
+#  define CS5530_VCFG_GV_SEL			0x00000010
+#  define CS5530_VCFG_CSC_BYPASS		0x00000020
+#  define CS5530_VCFG_X_FILTER_EN		0x00000040
+#  define CS5530_VCFG_Y_FILTER_EN		0x00000080
+#  define CS5530_VCFG_LINE_SIZE_LOWER_MASK	0x0000FF00
+#  define CS5530_VCFG_INIT_READ_MASK		0x01FF0000
+#  define CS5530_VCFG_EARLY_VID_RDY		0x02000000
+#  define CS5530_VCFG_LINE_SIZE_UPPER		0x08000000
+#  define CS5530_VCFG_4_2_0_MODE		0x10000000
+#  define CS5530_VCFG_16_BIT_EN			0x20000000
+#  define CS5530_VCFG_HIGH_SPD_INT		0x40000000
+
+#define CS5530_DISPLAY_CONFIG	0x0004
+#  define CS5530_DCFG_DIS_EN			0x00000001
+#  define CS5530_DCFG_HSYNC_EN			0x00000002
+#  define CS5530_DCFG_VSYNC_EN			0x00000004
+#  define CS5530_DCFG_DAC_BL_EN			0x00000008
+#  define CS5530_DCFG_DAC_PWR_EN		0x00000020
+#  define CS5530_DCFG_FP_PWR_EN			0x00000040
+#  define CS5530_DCFG_FP_DATA_EN		0x00000080
+#  define CS5530_DCFG_CRT_HSYNC_POL		0x00000100
+#  define CS5530_DCFG_CRT_VSYNC_POL		0x00000200
+#  define CS5530_DCFG_FP_HSYNC_POL		0x00000400
+#  define CS5530_DCFG_FP_VSYNC_POL		0x00000800
+#  define CS5530_DCFG_XGA_FP			0x00001000
+#  define CS5530_DCFG_FP_DITH_EN		0x00002000
+#  define CS5530_DCFG_CRT_SYNC_SKW_MASK		0x0001C000
+#  define CS5530_DCFG_CRT_SYNC_SKW_INIT		0x00010000
+#  define CS5530_DCFG_PWR_SEQ_DLY_MASK		0x000E0000
+#  define CS5530_DCFG_PWR_SEQ_DLY_INIT		0x00080000
+#  define CS5530_DCFG_VG_CK			0x00100000
+#  define CS5530_DCFG_GV_PAL_BYP		0x00200000
+#  define CS5530_DCFG_DDC_SCL			0x00400000
+#  define CS5530_DCFG_DDC_SDA			0x00800000
+#  define CS5530_DCFG_DDC_OE			0x01000000
+#  define CS5530_DCFG_16_BIT_EN			0x02000000
+
+#define CS5530_VIDEO_X_POS	0x0008
+#define CS5530_VIDEO_Y_POS	0x000C
+#define CS5530_VIDEO_SCALE	0x0010
+#define CS5530_VIDEO_COLOR_KEY	0x0014
+#define CS5530_VIDEO_COLOR_MASK 0x0018
+#define CS5530_PALETTE_ADDRESS	0x001C
+#define CS5530_PALETTE_DATA	0x0020
+#define CS5530_DOT_CLK_CONFIG	0x0024
+#define CS5530_CRCSIG_TFT_TV	0x0028
+
+#endif /* !__VIDEO_CS5530_H__ */
diff --git a/drivers/video/fbdev/geode/video_gx.c b/drivers/video/fbdev/geode/video_gx.c
new file mode 100644
index 000000000..91dac2aa2
--- /dev/null
+++ b/drivers/video/fbdev/geode/video_gx.c
@@ -0,0 +1,345 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Geode GX video processor device.
+ *
+ *   Copyright (C) 2006 Arcom Control Systems Ltd.
+ *
+ *   Portions from AMD's original 2.4 driver:
+ *     Copyright (C) 2004 Advanced Micro Devices, Inc.
+ */
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/msr.h>
+#include <linux/cs5535.h>
+
+#include "gxfb.h"
+
+
+/*
+ * Tables of register settings for various DOTCLKs.
+ */
+struct gx_pll_entry {
+	long pixclock; /* ps */
+	u32 sys_rstpll_bits;
+	u32 dotpll_value;
+};
+
+#define POSTDIV3 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3)
+#define PREMULT2 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPREMULT2)
+#define PREDIV2  ((u32)MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3)
+
+static const struct gx_pll_entry gx_pll_table_48MHz[] = {
+	{ 40123, POSTDIV3,	    0x00000BF2 },	/*  24.9230 */
+	{ 39721, 0,		    0x00000037 },	/*  25.1750 */
+	{ 35308, POSTDIV3|PREMULT2, 0x00000B1A },	/*  28.3220 */
+	{ 31746, POSTDIV3,	    0x000002D2 },	/*  31.5000 */
+	{ 27777, POSTDIV3|PREMULT2, 0x00000FE2 },	/*  36.0000 */
+	{ 26666, POSTDIV3,	    0x0000057A },	/*  37.5000 */
+	{ 25000, POSTDIV3,	    0x0000030A },	/*  40.0000 */
+	{ 22271, 0,		    0x00000063 },	/*  44.9000 */
+	{ 20202, 0,		    0x0000054B },	/*  49.5000 */
+	{ 20000, 0,		    0x0000026E },	/*  50.0000 */
+	{ 19860, PREMULT2,	    0x00000037 },	/*  50.3500 */
+	{ 18518, POSTDIV3|PREMULT2, 0x00000B0D },	/*  54.0000 */
+	{ 17777, 0,		    0x00000577 },	/*  56.2500 */
+	{ 17733, 0,		    0x000007F7 },	/*  56.3916 */
+	{ 17653, 0,		    0x0000057B },	/*  56.6444 */
+	{ 16949, PREMULT2,	    0x00000707 },	/*  59.0000 */
+	{ 15873, POSTDIV3|PREMULT2, 0x00000B39 },	/*  63.0000 */
+	{ 15384, POSTDIV3|PREMULT2, 0x00000B45 },	/*  65.0000 */
+	{ 14814, POSTDIV3|PREMULT2, 0x00000FC1 },	/*  67.5000 */
+	{ 14124, POSTDIV3,	    0x00000561 },	/*  70.8000 */
+	{ 13888, POSTDIV3,	    0x000007E1 },	/*  72.0000 */
+	{ 13426, PREMULT2,	    0x00000F4A },	/*  74.4810 */
+	{ 13333, 0,		    0x00000052 },	/*  75.0000 */
+	{ 12698, 0,		    0x00000056 },	/*  78.7500 */
+	{ 12500, POSTDIV3|PREMULT2, 0x00000709 },	/*  80.0000 */
+	{ 11135, PREMULT2,	    0x00000262 },	/*  89.8000 */
+	{ 10582, 0,		    0x000002D2 },	/*  94.5000 */
+	{ 10101, PREMULT2,	    0x00000B4A },	/*  99.0000 */
+	{ 10000, PREMULT2,	    0x00000036 },	/* 100.0000 */
+	{  9259, 0,		    0x000007E2 },	/* 108.0000 */
+	{  8888, 0,		    0x000007F6 },	/* 112.5000 */
+	{  7692, POSTDIV3|PREMULT2, 0x00000FB0 },	/* 130.0000 */
+	{  7407, POSTDIV3|PREMULT2, 0x00000B50 },	/* 135.0000 */
+	{  6349, 0,		    0x00000055 },	/* 157.5000 */
+	{  6172, 0,		    0x000009C1 },	/* 162.0000 */
+	{  5787, PREMULT2,	    0x0000002D },	/* 172.798  */
+	{  5698, 0,		    0x000002C1 },	/* 175.5000 */
+	{  5291, 0,		    0x000002D1 },	/* 189.0000 */
+	{  4938, 0,		    0x00000551 },	/* 202.5000 */
+	{  4357, 0,		    0x0000057D },	/* 229.5000 */
+};
+
+static const struct gx_pll_entry gx_pll_table_14MHz[] = {
+	{ 39721, 0, 0x00000037 },	/*  25.1750 */
+	{ 35308, 0, 0x00000B7B },	/*  28.3220 */
+	{ 31746, 0, 0x000004D3 },	/*  31.5000 */
+	{ 27777, 0, 0x00000BE3 },	/*  36.0000 */
+	{ 26666, 0, 0x0000074F },	/*  37.5000 */
+	{ 25000, 0, 0x0000050B },	/*  40.0000 */
+	{ 22271, 0, 0x00000063 },	/*  44.9000 */
+	{ 20202, 0, 0x0000054B },	/*  49.5000 */
+	{ 20000, 0, 0x0000026E },	/*  50.0000 */
+	{ 19860, 0, 0x000007C3 },	/*  50.3500 */
+	{ 18518, 0, 0x000007E3 },	/*  54.0000 */
+	{ 17777, 0, 0x00000577 },	/*  56.2500 */
+	{ 17733, 0, 0x000002FB },	/*  56.3916 */
+	{ 17653, 0, 0x0000057B },	/*  56.6444 */
+	{ 16949, 0, 0x0000058B },	/*  59.0000 */
+	{ 15873, 0, 0x0000095E },	/*  63.0000 */
+	{ 15384, 0, 0x0000096A },	/*  65.0000 */
+	{ 14814, 0, 0x00000BC2 },	/*  67.5000 */
+	{ 14124, 0, 0x0000098A },	/*  70.8000 */
+	{ 13888, 0, 0x00000BE2 },	/*  72.0000 */
+	{ 13333, 0, 0x00000052 },	/*  75.0000 */
+	{ 12698, 0, 0x00000056 },	/*  78.7500 */
+	{ 12500, 0, 0x0000050A },	/*  80.0000 */
+	{ 11135, 0, 0x0000078E },	/*  89.8000 */
+	{ 10582, 0, 0x000002D2 },	/*  94.5000 */
+	{ 10101, 0, 0x000011F6 },	/*  99.0000 */
+	{ 10000, 0, 0x0000054E },	/* 100.0000 */
+	{  9259, 0, 0x000007E2 },	/* 108.0000 */
+	{  8888, 0, 0x000002FA },	/* 112.5000 */
+	{  7692, 0, 0x00000BB1 },	/* 130.0000 */
+	{  7407, 0, 0x00000975 },	/* 135.0000 */
+	{  6349, 0, 0x00000055 },	/* 157.5000 */
+	{  6172, 0, 0x000009C1 },	/* 162.0000 */
+	{  5698, 0, 0x000002C1 },	/* 175.5000 */
+	{  5291, 0, 0x00000539 },	/* 189.0000 */
+	{  4938, 0, 0x00000551 },	/* 202.5000 */
+	{  4357, 0, 0x0000057D },	/* 229.5000 */
+};
+
+void gx_set_dclk_frequency(struct fb_info *info)
+{
+	const struct gx_pll_entry *pll_table;
+	int pll_table_len;
+	int i, best_i;
+	long min, diff;
+	u64 dotpll, sys_rstpll;
+	int timeout = 1000;
+
+	/* Rev. 1 Geode GXs use a 14 MHz reference clock instead of 48 MHz. */
+	if (cpu_data(0).x86_stepping == 1) {
+		pll_table = gx_pll_table_14MHz;
+		pll_table_len = ARRAY_SIZE(gx_pll_table_14MHz);
+	} else {
+		pll_table = gx_pll_table_48MHz;
+		pll_table_len = ARRAY_SIZE(gx_pll_table_48MHz);
+	}
+
+	/* Search the table for the closest pixclock. */
+	best_i = 0;
+	min = abs(pll_table[0].pixclock - info->var.pixclock);
+	for (i = 1; i < pll_table_len; i++) {
+		diff = abs(pll_table[i].pixclock - info->var.pixclock);
+		if (diff < min) {
+			min = diff;
+			best_i = i;
+		}
+	}
+
+	rdmsrl(MSR_GLCP_SYS_RSTPLL, sys_rstpll);
+	rdmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+	/* Program new M, N and P. */
+	dotpll &= 0x00000000ffffffffull;
+	dotpll |= (u64)pll_table[best_i].dotpll_value << 32;
+	dotpll |= MSR_GLCP_DOTPLL_DOTRESET;
+	dotpll &= ~MSR_GLCP_DOTPLL_BYPASS;
+
+	wrmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+	/* Program dividers. */
+	sys_rstpll &= ~( MSR_GLCP_SYS_RSTPLL_DOTPREDIV2
+			 | MSR_GLCP_SYS_RSTPLL_DOTPREMULT2
+			 | MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3 );
+	sys_rstpll |= pll_table[best_i].sys_rstpll_bits;
+
+	wrmsrl(MSR_GLCP_SYS_RSTPLL, sys_rstpll);
+
+	/* Clear reset bit to start PLL. */
+	dotpll &= ~(MSR_GLCP_DOTPLL_DOTRESET);
+	wrmsrl(MSR_GLCP_DOTPLL, dotpll);
+
+	/* Wait for LOCK bit. */
+	do {
+		rdmsrl(MSR_GLCP_DOTPLL, dotpll);
+	} while (timeout-- && !(dotpll & MSR_GLCP_DOTPLL_LOCK));
+}
+
+static void
+gx_configure_tft(struct fb_info *info)
+{
+	struct gxfb_par *par = info->par;
+	unsigned long val;
+	unsigned long fp;
+
+	/* Set up the DF pad select MSR */
+
+	rdmsrl(MSR_GX_MSR_PADSEL, val);
+	val &= ~MSR_GX_MSR_PADSEL_MASK;
+	val |= MSR_GX_MSR_PADSEL_TFT;
+	wrmsrl(MSR_GX_MSR_PADSEL, val);
+
+	/* Turn off the panel */
+
+	fp = read_fp(par, FP_PM);
+	fp &= ~FP_PM_P;
+	write_fp(par, FP_PM, fp);
+
+	/* Set timing 1 */
+
+	fp = read_fp(par, FP_PT1);
+	fp &= FP_PT1_VSIZE_MASK;
+	fp |= info->var.yres << FP_PT1_VSIZE_SHIFT;
+	write_fp(par, FP_PT1, fp);
+
+	/* Timing 2 */
+	/* Set bits that are always on for TFT */
+
+	fp = 0x0F100000;
+
+	/* Configure sync polarity */
+
+	if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
+		fp |= FP_PT2_VSP;
+
+	if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
+		fp |= FP_PT2_HSP;
+
+	write_fp(par, FP_PT2, fp);
+
+	/*  Set the dither control */
+	write_fp(par, FP_DFC, FP_DFC_NFI);
+
+	/* Enable the FP data and power (in case the BIOS didn't) */
+
+	fp = read_vp(par, VP_DCFG);
+	fp |= VP_DCFG_FP_PWR_EN | VP_DCFG_FP_DATA_EN;
+	write_vp(par, VP_DCFG, fp);
+
+	/* Unblank the panel */
+
+	fp = read_fp(par, FP_PM);
+	fp |= FP_PM_P;
+	write_fp(par, FP_PM, fp);
+}
+
+void gx_configure_display(struct fb_info *info)
+{
+	struct gxfb_par *par = info->par;
+	u32 dcfg, misc;
+
+	/* Write the display configuration */
+	dcfg = read_vp(par, VP_DCFG);
+
+	/* Disable hsync and vsync */
+	dcfg &= ~(VP_DCFG_VSYNC_EN | VP_DCFG_HSYNC_EN);
+	write_vp(par, VP_DCFG, dcfg);
+
+	/* Clear bits from existing mode. */
+	dcfg &= ~(VP_DCFG_CRT_SYNC_SKW
+		  | VP_DCFG_CRT_HSYNC_POL   | VP_DCFG_CRT_VSYNC_POL
+		  | VP_DCFG_VSYNC_EN        | VP_DCFG_HSYNC_EN);
+
+	/* Set default sync skew.  */
+	dcfg |= VP_DCFG_CRT_SYNC_SKW_DEFAULT;
+
+	/* Enable hsync and vsync. */
+	dcfg |= VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN;
+
+	misc = read_vp(par, VP_MISC);
+
+	/* Disable gamma correction */
+	misc |= VP_MISC_GAM_EN;
+
+	if (par->enable_crt) {
+
+		/* Power up the CRT DACs */
+		misc &= ~(VP_MISC_APWRDN | VP_MISC_DACPWRDN);
+		write_vp(par, VP_MISC, misc);
+
+		/* Only change the sync polarities if we are running
+		 * in CRT mode.  The FP polarities will be handled in
+		 * gxfb_configure_tft */
+		if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
+			dcfg |= VP_DCFG_CRT_HSYNC_POL;
+		if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
+			dcfg |= VP_DCFG_CRT_VSYNC_POL;
+	} else {
+		/* Power down the CRT DACs if in FP mode */
+		misc |= (VP_MISC_APWRDN | VP_MISC_DACPWRDN);
+		write_vp(par, VP_MISC, misc);
+	}
+
+	/* Enable the display logic */
+	/* Set up the DACS to blank normally */
+
+	dcfg |= VP_DCFG_CRT_EN | VP_DCFG_DAC_BL_EN;
+
+	/* Enable the external DAC VREF? */
+
+	write_vp(par, VP_DCFG, dcfg);
+
+	/* Set up the flat panel (if it is enabled) */
+
+	if (par->enable_crt == 0)
+		gx_configure_tft(info);
+}
+
+int gx_blank_display(struct fb_info *info, int blank_mode)
+{
+	struct gxfb_par *par = info->par;
+	u32 dcfg, fp_pm;
+	int blank, hsync, vsync, crt;
+
+	/* CRT power saving modes. */
+	switch (blank_mode) {
+	case FB_BLANK_UNBLANK:
+		blank = 0; hsync = 1; vsync = 1; crt = 1;
+		break;
+	case FB_BLANK_NORMAL:
+		blank = 1; hsync = 1; vsync = 1; crt = 1;
+		break;
+	case FB_BLANK_VSYNC_SUSPEND:
+		blank = 1; hsync = 1; vsync = 0; crt = 1;
+		break;
+	case FB_BLANK_HSYNC_SUSPEND:
+		blank = 1; hsync = 0; vsync = 1; crt = 1;
+		break;
+	case FB_BLANK_POWERDOWN:
+		blank = 1; hsync = 0; vsync = 0; crt = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+	dcfg = read_vp(par, VP_DCFG);
+	dcfg &= ~(VP_DCFG_DAC_BL_EN | VP_DCFG_HSYNC_EN | VP_DCFG_VSYNC_EN |
+			VP_DCFG_CRT_EN);
+	if (!blank)
+		dcfg |= VP_DCFG_DAC_BL_EN;
+	if (hsync)
+		dcfg |= VP_DCFG_HSYNC_EN;
+	if (vsync)
+		dcfg |= VP_DCFG_VSYNC_EN;
+	if (crt)
+		dcfg |= VP_DCFG_CRT_EN;
+	write_vp(par, VP_DCFG, dcfg);
+
+	/* Power on/off flat panel. */
+
+	if (par->enable_crt == 0) {
+		fp_pm = read_fp(par, FP_PM);
+		if (blank_mode == FB_BLANK_POWERDOWN)
+			fp_pm &= ~FP_PM_P;
+		else
+			fp_pm |= FP_PM_P;
+		write_fp(par, FP_PM, fp_pm);
+	}
+
+	return 0;
+}