ARM: 6281/1: video/imxfb.c: allow usage without BACKLIGHT_CLASS_DEVICE

From: Eric Bénard <eric@eukrea.com>

This fixes the following build failure:

	drivers/built-in.o: In function `imxfb_probe': mxcmmc.c:(.init.text+0xd04): undefined reference to `backlight_device_register'
	drivers/built-in.o: In function `imxfb_remove': mxcmmc.c:(.devexit.text+0x44): undefined reference to `backlight_device_unregister'

that was introduced by

	7a2bb23 (imxfb: add pwmr controlled backlight support)

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 17 insertions, 2 deletions

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 43f0639b1c10..5c363d026f64 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -40,6 +40,12 @@
  */
 #define DEBUG_VAR 1
 
+#if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || \
+        (defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) && \
+                defined(CONFIG_FB_IMX_MODULE))
+#define PWMR_BACKLIGHT_AVAILABLE
+#endif
+
 #define DRIVER_NAME "imx-fb"
 
 #define LCDC_SSA        0x00
@@ -175,7 +181,9 @@ struct imxfb_info {
 
         struct imx_fb_videomode *mode;
         int                     num_modes;
+#ifdef PWMR_BACKLIGHT_AVAILABLE
         struct backlight_device *bl;
+#endif
 
         void (*lcd_power)(int);
         void (*backlight_power)(int);
@@ -450,8 +458,7 @@ static int imxfb_set_par(struct fb_info *info)
         return 0;
 }
 
-
-
+#ifdef PWMR_BACKLIGHT_AVAILABLE
 static int imxfb_bl_get_brightness(struct backlight_device *bl)
 {
         struct imxfb_info *fbi = bl_get_data(bl);
@@ -516,6 +523,7 @@ static void imxfb_exit_backlight(struct imxfb_info *fbi)
         if (fbi->bl)
                 backlight_device_unregister(fbi->bl);
 }
+#endif
 
 static void imxfb_enable_controller(struct imxfb_info *fbi)
 {
@@ -647,6 +655,9 @@ 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);
+#ifndef PWMR_BACKLIGHT_AVAILABLE
+        writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
+#endif
         writel(fbi->lscr1, fbi->regs + LCDC_LSCR1);
         writel(fbi->dmacr, fbi->regs + LCDC_DMACR);
 
@@ -847,7 +858,9 @@ static int __init imxfb_probe(struct platform_device *pdev)
 
         imxfb_enable_controller(fbi);
         fbi->pdev = pdev;
+#ifdef PWMR_BACKLIGHT_AVAILABLE
         imxfb_init_backlight(fbi);
+#endif
 
         return 0;
 
@@ -885,7 +898,9 @@ static int __devexit imxfb_remove(struct platform_device *pdev)
 
         imxfb_disable_controller(fbi);
 
+#ifdef PWMR_BACKLIGHT_AVAILABLE
         imxfb_exit_backlight(fbi);
+#endif
         unregister_framebuffer(info);
 
         pdata = pdev->dev.platform_data;