1 files changed, 35 insertions, 15 deletions

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index f135dbead07..caad3689b4e 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -131,7 +131,9 @@ struct imxfb_rgb {
 struct imxfb_info {
 	struct platform_device  *pdev;
 	void __iomem		*regs;
-	struct clk		*clk;
+	struct clk		*clk_ipg;
+	struct clk		*clk_ahb;
+	struct clk		*clk_per;
 
 	/*
 	 * These are the addresses we mapped
@@ -340,7 +342,7 @@ static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 
 	pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel);
 
-	lcd_clk = clk_get_rate(fbi->clk);
+	lcd_clk = clk_get_rate(fbi->clk_per);
 
 	tmp = var->pixclock * (unsigned long long)lcd_clk;
 
@@ -455,11 +457,17 @@ static int imxfb_bl_update_status(struct backlight_device *bl)
 
 	fbi->pwmr = (fbi->pwmr & ~0xFF) | brightness;
 
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		clk_enable(fbi->clk);
+	if (bl->props.fb_blank != FB_BLANK_UNBLANK) {
+		clk_prepare_enable(fbi->clk_ipg);
+		clk_prepare_enable(fbi->clk_ahb);
+		clk_prepare_enable(fbi->clk_per);
+	}
 	writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		clk_disable(fbi->clk);
+	if (bl->props.fb_blank != FB_BLANK_UNBLANK) {
+		clk_disable_unprepare(fbi->clk_per);
+		clk_disable_unprepare(fbi->clk_ahb);
+		clk_disable_unprepare(fbi->clk_ipg);
+	}
 
 	return 0;
 }
@@ -522,7 +530,9 @@ static void imxfb_enable_controller(struct imxfb_info *fbi)
 	 */
 	writel(RMCR_LCDC_EN_MX1, fbi->regs + LCDC_RMCR);
 
-	clk_enable(fbi->clk);
+	clk_prepare_enable(fbi->clk_ipg);
+	clk_prepare_enable(fbi->clk_ahb);
+	clk_prepare_enable(fbi->clk_per);
 
 	if (fbi->backlight_power)
 		fbi->backlight_power(1);
@@ -539,7 +549,9 @@ static void imxfb_disable_controller(struct imxfb_info *fbi)
 	if (fbi->lcd_power)
 		fbi->lcd_power(0);
 
-	clk_disable(fbi->clk);
+	clk_disable_unprepare(fbi->clk_per);
+	clk_disable_unprepare(fbi->clk_ipg);
+	clk_disable_unprepare(fbi->clk_ahb);
 
 	writel(0, fbi->regs + LCDC_RMCR);
 }
@@ -770,10 +782,21 @@ static int __init imxfb_probe(struct platform_device *pdev)
 		goto failed_req;
 	}
 
-	fbi->clk = clk_get(&pdev->dev, NULL);
-	if (IS_ERR(fbi->clk)) {
-		ret = PTR_ERR(fbi->clk);
-		dev_err(&pdev->dev, "unable to get clock: %d\n", ret);
+	fbi->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
+	if (IS_ERR(fbi->clk_ipg)) {
+		ret = PTR_ERR(fbi->clk_ipg);
+		goto failed_getclock;
+	}
+
+	fbi->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
+	if (IS_ERR(fbi->clk_ahb)) {
+		ret = PTR_ERR(fbi->clk_ahb);
+		goto failed_getclock;
+	}
+
+	fbi->clk_per = devm_clk_get(&pdev->dev, "per");
+	if (IS_ERR(fbi->clk_per)) {
+		ret = PTR_ERR(fbi->clk_per);
 		goto failed_getclock;
 	}
 
@@ -858,7 +881,6 @@ failed_platform_init:
 failed_map:
 	iounmap(fbi->regs);
 failed_ioremap:
-	clk_put(fbi->clk);
 failed_getclock:
 	release_mem_region(res->start, resource_size(res));
 failed_req:
@@ -895,8 +917,6 @@ static int __devexit imxfb_remove(struct platform_device *pdev)
 
 	iounmap(fbi->regs);
 	release_mem_region(res->start, resource_size(res));
-	clk_disable(fbi->clk);
-	clk_put(fbi->clk);
 
 	platform_set_drvdata(pdev, NULL);