Merge branch 'devel-map-io' into omap-for-linus

2 files changed, 86 insertions, 19 deletions

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index b4b6deceed1..43f0639b1c1 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -175,6 +175,7 @@ struct imxfb_info {
 
 	struct imx_fb_videomode *mode;
 	int			num_modes;
+	struct backlight_device *bl;
 
 	void (*lcd_power)(int);
 	void (*backlight_power)(int);
@@ -449,6 +450,73 @@ static int imxfb_set_par(struct fb_info *info)
 	return 0;
 }
 
+
+
+static int imxfb_bl_get_brightness(struct backlight_device *bl)
+{
+	struct imxfb_info *fbi = bl_get_data(bl);
+
+	return readl(fbi->regs + LCDC_PWMR) & 0xFF;
+}
+
+static int imxfb_bl_update_status(struct backlight_device *bl)
+{
+	struct imxfb_info *fbi = bl_get_data(bl);
+	int brightness = bl->props.brightness;
+
+	if (bl->props.power != FB_BLANK_UNBLANK)
+		brightness = 0;
+	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
+		brightness = 0;
+
+	fbi->pwmr = (fbi->pwmr & ~0xFF) | brightness;
+
+	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
+		clk_enable(fbi->clk);
+	writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
+	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
+		clk_disable(fbi->clk);
+
+	return 0;
+}
+
+static const struct backlight_ops imxfb_lcdc_bl_ops = {
+	.update_status = imxfb_bl_update_status,
+	.get_brightness = imxfb_bl_get_brightness,
+};
+
+static void imxfb_init_backlight(struct imxfb_info *fbi)
+{
+	struct backlight_properties props;
+	struct backlight_device	*bl;
+
+	if (fbi->bl)
+		return;
+
+	memset(&props, 0, sizeof(struct backlight_properties));
+	props.max_brightness = 0xff;
+	writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
+
+	bl = backlight_device_register("imxfb-bl", &fbi->pdev->dev, fbi,
+				       &imxfb_lcdc_bl_ops, &props);
+	if (IS_ERR(bl)) {
+		dev_err(&fbi->pdev->dev, "error %ld on backlight register\n",
+				PTR_ERR(bl));
+		return;
+	}
+
+	fbi->bl = bl;
+	bl->props.power = FB_BLANK_UNBLANK;
+	bl->props.fb_blank = FB_BLANK_UNBLANK;
+	bl->props.brightness = imxfb_bl_get_brightness(bl);
+}
+
+static void imxfb_exit_backlight(struct imxfb_info *fbi)
+{
+	if (fbi->bl)
+		backlight_device_unregister(fbi->bl);
+}
+
 static void imxfb_enable_controller(struct imxfb_info *fbi)
 {
 	pr_debug("Enabling LCD controller\n");
@@ -579,7 +647,6 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 			fbi->regs + LCDC_SIZE);
 
 	writel(fbi->pcr, fbi->regs + LCDC_PCR);
-	writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
 	writel(fbi->lscr1, fbi->regs + LCDC_LSCR1);
 	writel(fbi->dmacr, fbi->regs + LCDC_DMACR);
 
@@ -779,6 +846,8 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	}
 
 	imxfb_enable_controller(fbi);
+	fbi->pdev = pdev;
+	imxfb_init_backlight(fbi);
 
 	return 0;
 
@@ -816,6 +885,7 @@ static int __devexit imxfb_remove(struct platform_device *pdev)
 
 	imxfb_disable_controller(fbi);
 
+	imxfb_exit_backlight(fbi);
 	unregister_framebuffer(info);
 
 	pdata = pdev->dev.platform_data;
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index 3b1237ad85e..f6fdc2085f3 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -25,7 +25,7 @@
 #include <linux/list.h>
 #include <linux/slab.h>
 #include <linux/seq_file.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
 #include <linux/completion.h>
 #include <linux/debugfs.h>
 #include <linux/jiffies.h>
@@ -525,10 +525,8 @@ early_param("vram", omap_vram_early_vram);
  * Called from map_io. We need to call to this early enough so that we
  * can reserve the fixed SDRAM regions before VM could get hold of them.
  */
-void __init omap_vram_reserve_sdram(void)
+void __init omap_vram_reserve_sdram_memblock(void)
 {
-	struct bootmem_data	*bdata;
-	unsigned long		sdram_start, sdram_size;
 	u32 paddr;
 	u32 size = 0;
 
@@ -555,29 +553,28 @@ void __init omap_vram_reserve_sdram(void)
 
 	size = PAGE_ALIGN(size);
 
-	bdata = NODE_DATA(0)->bdata;
-	sdram_start = bdata->node_min_pfn << PAGE_SHIFT;
-	sdram_size = (bdata->node_low_pfn << PAGE_SHIFT) - sdram_start;
-
 	if (paddr) {
-		if ((paddr & ~PAGE_MASK) || paddr < sdram_start ||
-				paddr + size > sdram_start + sdram_size) {
+		struct memblock_property res;
+
+		res.base = paddr;
+		res.size = size;
+		if ((paddr & ~PAGE_MASK) || memblock_find(&res) ||
+		    res.base != paddr || res.size != size) {
 			pr_err("Illegal SDRAM region for VRAM\n");
 			return;
 		}
 
-		if (reserve_bootmem(paddr, size, BOOTMEM_EXCLUSIVE) < 0) {
-			pr_err("FB: failed to reserve VRAM\n");
+		if (memblock_is_region_reserved(paddr, size)) {
+			pr_err("FB: failed to reserve VRAM - busy\n");
 			return;
 		}
-	} else {
-		if (size > sdram_size) {
-			pr_err("Illegal SDRAM size for VRAM\n");
+
+		if (memblock_reserve(paddr, size) < 0) {
+			pr_err("FB: failed to reserve VRAM - no memory\n");
 			return;
 		}
-
-		paddr = virt_to_phys(alloc_bootmem_pages(size));
-		BUG_ON(paddr & ~PAGE_MASK);
+	} else {
+		paddr = memblock_alloc_base(size, PAGE_SIZE, MEMBLOCK_REAL_LIMIT);
 	}
 
 	omap_vram_add_region(paddr, size);