Merge tag 'imx-common-clk' of git://git.pengutronix.de/git/imx/linux-2.6 into next/clock

Sascha Hauer <s.hauer@pengutronix.de> writes:

 ARM i.MX common clock framework support

 Same as with Shawns series this one depends on:
   git://git.linaro.org/people/mturquette/linux.git clk-next
   http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-arm.git clkdev

* tag 'imx-common-clk' of git://git.pengutronix.de/git/imx/linux-2.6: (34 commits)
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM i.MX31: implement clocks using common clock framework
  ARM i.MX27: implement clocks using common clock framework
  ARM i.MX21: implement clocks using common clock framework
  ARM i.MX1: implement clocks using common clock framework
  ARM i.MX25: implement clocks using common clock framework
  ARM: imx: add common clock support for clk busy
  ARM: imx: add common clock support for pfd
  ARM i.MX: Add common clock support for 2bit gate
  ARM: imx: add common clock support for pllv3
  ARM i.MX: Add common clock support for pllv2
  ARM i.MX: Add common clock support for pllv1
  ARM i.MX: prepare for common clock framework
  ARM i.MX3: Make ccm base address a variable
  ARM i.MX timer: request correct clock
  ARM i.MX5: prepare gpc_dvfs_clk
  rtc: imx dryice: Add missing clk_prepare
  ...

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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);