X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fvideo%2Fau1100fb.c;h=d63c3f485853e52eb9b351bd7991295c05df1ebe;hb=c93983bf517c100a31e40ef087e19bd3d7aa2d28;hp=a5129806172fb0684980eb685cf9a84f20fe58e7;hpb=1ef43204f4bd24dcd3156185b19b31b6b4151ae9;p=powerpc.git

diff --git a/drivers/video/au1100fb.c b/drivers/video/au1100fb.c
index a512980617..d63c3f4858 100644
--- a/drivers/video/au1100fb.c
+++ b/drivers/video/au1100fb.c
@@ -7,6 +7,8 @@
  *  	Karl Lessard <klessard@sunrisetelecom.com>
  *  	<c.pellegrin@exadron.com>
  *
+ * PM support added by Rodolfo Giometti <giometti@linux.it>
+ *
  * Copyright 2002 MontaVista Software
  * Author: MontaVista Software, Inc.
  *		ppopov@mvista.com or source@mvista.com
@@ -49,6 +51,7 @@
 #include <linux/interrupt.h>
 #include <linux/ctype.h>
 #include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
 
 #include <asm/mach-au1x00/au1000.h>
 
@@ -213,10 +216,13 @@ int au1100fb_setmode(struct au1100fb_device *fbdev)
  */
 int au1100fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi)
 {
-	struct au1100fb_device *fbdev = to_au1100fb_device(fbi);
-	u32 *palette = fbdev->regs->lcd_pallettebase;
+	struct au1100fb_device *fbdev;
+	u32 *palette;
 	u32 value;
 
+	fbdev = to_au1100fb_device(fbi);
+	palette = fbdev->regs->lcd_pallettebase;
+
 	if (regno > (AU1100_LCD_NBR_PALETTE_ENTRIES - 1))
 		return -EINVAL;
 
@@ -315,9 +321,11 @@ int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi)
  */
 int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi)
 {
-	struct au1100fb_device *fbdev = to_au1100fb_device(fbi);
+	struct au1100fb_device *fbdev;
 	int dy;
 
+	fbdev = to_au1100fb_device(fbi);
+
 	print_dbg("fb_pan_display %p %p", var, fbi);
 
 	if (!var || !fbdev) {
@@ -379,12 +387,14 @@ void au1100fb_fb_rotate(struct fb_info *fbi, int angle)
  * Map video memory in user space. We don't use the generic fb_mmap method mainly
  * to allow the use of the TLB streaming flag (CCA=6)
  */
-int au1100fb_fb_mmap(struct fb_info *fbi, struct file *file, struct vm_area_struct *vma)
+int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
 {
-	struct au1100fb_device *fbdev = to_au1100fb_device(fbi);
+	struct au1100fb_device *fbdev;
 	unsigned int len;
 	unsigned long start=0, off;
 
+	fbdev = to_au1100fb_device(fbi);
+
 	if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
 		return -EINVAL;
 	}
@@ -406,7 +416,7 @@ int au1100fb_fb_mmap(struct fb_info *fbi, struct file *file, struct vm_area_stru
 
 	vma->vm_flags |= VM_IO;
 
-	if (io_remap_page_range(vma, vma->vm_start, off,
+	if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
 				vma->vm_end - vma->vm_start,
 				vma->vm_page_prot)) {
 		return -EAGAIN;
@@ -466,7 +476,7 @@ int au1100fb_drv_probe(struct device *dev)
 
 	if (!request_mem_region(au1100fb_fix.mmio_start, au1100fb_fix.mmio_len,
 				DRIVER_NAME)) {
-		print_err("fail to lock memory region at 0x%08x",
+		print_err("fail to lock memory region at 0x%08lx",
 				au1100fb_fix.mmio_start);
 		return -EBUSY;
 	}
@@ -594,17 +604,52 @@ int au1100fb_drv_remove(struct device *dev)
 	return 0;
 }
 
-int au1100fb_drv_suspend(struct device *dev, u32 state, u32 level)
+#ifdef CONFIG_PM
+static u32 sys_clksrc;
+static struct au1100fb_regs fbregs;
+
+int au1100fb_drv_suspend(struct device *dev, pm_message_t state)
 {
-	/* TODO */
+	struct au1100fb_device *fbdev = dev_get_drvdata(dev);
+
+	if (!fbdev)
+		return 0;
+
+	/* Save the clock source state */
+	sys_clksrc = au_readl(SYS_CLKSRC);
+
+	/* Blank the LCD */
+	au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info);
+
+	/* Stop LCD clocking */
+	au_writel(sys_clksrc & ~SYS_CS_ML_MASK, SYS_CLKSRC);
+
+	memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs));
+
 	return 0;
 }
 
-int au1100fb_drv_resume(struct device *dev, u32 level)
+int au1100fb_drv_resume(struct device *dev)
 {
-	/* TODO */
+	struct au1100fb_device *fbdev = dev_get_drvdata(dev);
+
+	if (!fbdev)
+		return 0;
+
+	memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs));
+
+	/* Restart LCD clocking */
+	au_writel(sys_clksrc, SYS_CLKSRC);
+
+	/* Unblank the LCD */
+	au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info);
+
 	return 0;
 }
+#else
+#define au1100fb_drv_suspend NULL
+#define au1100fb_drv_resume NULL
+#endif
 
 static struct device_driver au1100fb_driver = {
 	.name		= "au1100-lcd",