3 files changed, 97 insertions, 31 deletions

diff --git a/drivers/video/nvidia/nv_accel.c b/drivers/video/nvidia/nv_accel.c
index f377a29ec97a..4aefb8f41637 100644
--- a/drivers/video/nvidia/nv_accel.c
+++ b/drivers/video/nvidia/nv_accel.c
@@ -300,6 +300,9 @@ int nvidiafb_sync(struct fb_info *info)
 {
 	struct nvidia_par *par = info->par;
 
+	if (info->state != FBINFO_STATE_RUNNING)
+		return 0;
+
 	if (!par->lockup)
 		NVFlush(par);
 
@@ -313,6 +316,9 @@ void nvidiafb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
 {
 	struct nvidia_par *par = info->par;
 
+	if (info->state != FBINFO_STATE_RUNNING)
+		return;
+
 	if (par->lockup)
 		return cfb_copyarea(info, region);
 
@@ -329,6 +335,9 @@ void nvidiafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 	struct nvidia_par *par = info->par;
 	u32 color;
 
+	if (info->state != FBINFO_STATE_RUNNING)
+		return;
+
 	if (par->lockup)
 		return cfb_fillrect(info, rect);
 
@@ -412,6 +421,9 @@ void nvidiafb_imageblit(struct fb_info *info, const struct fb_image *image)
 {
 	struct nvidia_par *par = info->par;
 
+	if (info->state != FBINFO_STATE_RUNNING)
+		return;
+
 	if (image->depth == 1 && !par->lockup)
 		nvidiafb_mono_color_expand(info, image);
 	else
diff --git a/drivers/video/nvidia/nv_type.h b/drivers/video/nvidia/nv_type.h
index e4a5b1da71c4..acdc26693402 100644
--- a/drivers/video/nvidia/nv_type.h
+++ b/drivers/video/nvidia/nv_type.h
@@ -129,6 +129,7 @@ struct nvidia_par {
 	int fpHeight;
 	int PanelTweak;
 	int paneltweak;
+	int pm_state;
 	u32 crtcSync_read;
 	u32 fpSyncs;
 	u32 dmaPut;
diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c
index a7c4e5e8ead6..c758b386f146 100644
--- a/drivers/video/nvidia/nvidia.c
+++ b/drivers/video/nvidia/nvidia.c
@@ -21,6 +21,7 @@
 #include <linux/fb.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/console.h>
 #ifdef CONFIG_MTRR
 #include <asm/mtrr.h>
 #endif
@@ -615,6 +616,30 @@ static int nvidia_panel_tweak(struct nvidia_par *par,
    return tweak;
 }
 
+static void nvidia_vga_protect(struct nvidia_par *par, int on)
+{
+	unsigned char tmp;
+
+	if (on) {
+		/*
+		 * Turn off screen and disable sequencer.
+		 */
+		tmp = NVReadSeq(par, 0x01);
+
+		NVWriteSeq(par, 0x00, 0x01);		/* Synchronous Reset */
+		NVWriteSeq(par, 0x01, tmp | 0x20);	/* disable the display */
+	} else {
+		/*
+		 * Reenable sequencer, then turn on screen.
+		 */
+
+		tmp = NVReadSeq(par, 0x01);
+
+		NVWriteSeq(par, 0x01, tmp & ~0x20);	/* reenable display */
+		NVWriteSeq(par, 0x00, 0x03);		/* End Reset */
+	}
+}
+
 static void nvidia_save_vga(struct nvidia_par *par,
 			    struct _riva_hw_state *state)
 {
@@ -643,9 +668,9 @@ static void nvidia_save_vga(struct nvidia_par *par,
 
 #undef DUMP_REG
 
-static void nvidia_write_regs(struct nvidia_par *par)
+static void nvidia_write_regs(struct nvidia_par *par,
+			      struct _riva_hw_state *state)
 {
-	struct _riva_hw_state *state = &par->ModeReg;
 	int i;
 
 	NVTRACE_ENTER();
@@ -694,32 +719,6 @@ static void nvidia_write_regs(struct nvidia_par *par)
 	NVTRACE_LEAVE();
 }
 
-static void nvidia_vga_protect(struct nvidia_par *par, int on)
-{
-	unsigned char tmp;
-
-	if (on) {
-		/*
-		 * Turn off screen and disable sequencer.
-		 */
-		tmp = NVReadSeq(par, 0x01);
-
-		NVWriteSeq(par, 0x00, 0x01);		/* Synchronous Reset */
-		NVWriteSeq(par, 0x01, tmp | 0x20);	/* disable the display */
-	} else {
-		/*
-		 * Reenable sequencer, then turn on screen.
-		 */
-
-		tmp = NVReadSeq(par, 0x01);
-
-		NVWriteSeq(par, 0x01, tmp & ~0x20);	/* reenable display */
-		NVWriteSeq(par, 0x00, 0x03);		/* End Reset */
-	}
-}
-
-
-
 static int nvidia_calc_regs(struct fb_info *info)
 {
 	struct nvidia_par *par = info->par;
@@ -1068,7 +1067,8 @@ static int nvidiafb_set_par(struct fb_info *info)
 
 	nvidia_vga_protect(par, 1);
 
-	nvidia_write_regs(par);
+	nvidia_write_regs(par, &par->ModeReg);
+	NVSetStartAddress(par, 0);
 
 #if defined (__BIG_ENDIAN)
 	/* turn on LFB swapping */
@@ -1377,6 +1377,57 @@ static struct fb_ops nvidia_fb_ops = {
 	.fb_sync        = nvidiafb_sync,
 };
 
+#ifdef CONFIG_PM
+static int nvidiafb_suspend(struct pci_dev *dev, pm_message_t state)
+{
+	struct fb_info *info = pci_get_drvdata(dev);
+	struct nvidia_par *par = info->par;
+
+	acquire_console_sem();
+	par->pm_state = state.event;
+
+	if (state.event == PM_EVENT_FREEZE) {
+		dev->dev.power.power_state = state;
+	} else {
+		fb_set_suspend(info, 1);
+		nvidiafb_blank(FB_BLANK_POWERDOWN, info);
+		nvidia_write_regs(par, &par->SavedReg);
+		pci_save_state(dev);
+		pci_disable_device(dev);
+		pci_set_power_state(dev, pci_choose_state(dev, state));
+	}
+
+	release_console_sem();
+	return 0;
+}
+
+static int nvidiafb_resume(struct pci_dev *dev)
+{
+	struct fb_info *info = pci_get_drvdata(dev);
+	struct nvidia_par *par = info->par;
+
+	acquire_console_sem();
+	pci_set_power_state(dev, PCI_D0);
+
+	if (par->pm_state != PM_EVENT_FREEZE) {
+		pci_restore_state(dev);
+		pci_enable_device(dev);
+		pci_set_master(dev);
+	}
+
+	par->pm_state = PM_EVENT_ON;
+	nvidiafb_set_par(info);
+	fb_set_suspend (info, 0);
+	nvidiafb_blank(FB_BLANK_UNBLANK, info);
+
+	release_console_sem();
+	return 0;
+}
+#else
+#define nvidiafb_suspend NULL
+#define nvidiafb_resume NULL
+#endif
+
 static int __devinit nvidia_set_fbinfo(struct fb_info *info)
 {
 	struct fb_monspecs *specs = &info->monspecs;
@@ -1798,8 +1849,10 @@ static int __devinit nvidiafb_setup(char *options)
 static struct pci_driver nvidiafb_driver = {
 	.name = "nvidiafb",
 	.id_table = nvidiafb_pci_tbl,
-	.probe = nvidiafb_probe,
-	.remove = __exit_p(nvidiafb_remove),
+	.probe    = nvidiafb_probe,
+	.suspend  = nvidiafb_suspend,
+	.resume   = nvidiafb_resume,
+	.remove   = __exit_p(nvidiafb_remove),
 };
 
 /* ------------------------------------------------------------------------- *