From 7627899b11ece118b46fbf652e944f9a239f6cd1 Mon Sep 17 00:00:00 2001
From: Dennis Munsie <dmunsie@cecropia.com>
Date: Tue, 20 Jun 2006 14:55:55 -0400
Subject: intelfb: add preliminary i2c support

Adds code to unregister the I2C buses in the cleanup function.

Signed-off-by: Dennis Munsie <dmunsie@cecropia.com>
---
 drivers/video/intelfb/intelfb.h     |  1 +
 drivers/video/intelfb/intelfb_i2c.c | 16 ++++++++++++++++
 drivers/video/intelfb/intelfbdrv.c  |  5 +++++
 3 files changed, 22 insertions(+)

(limited to 'drivers/video')

diff --git a/drivers/video/intelfb/intelfb.h b/drivers/video/intelfb/intelfb.h
index 6ef38c90c4d6..abdadc2a1b47 100644
--- a/drivers/video/intelfb/intelfb.h
+++ b/drivers/video/intelfb/intelfb.h
@@ -367,6 +367,7 @@ extern int intelfb_var_to_depth(const struct fb_var_screeninfo *var);
 
 #ifdef CONFIG_FB_INTEL_I2C
 extern void intelfb_create_i2c_busses(struct intelfb_info *dinfo);
+extern void intelfb_delete_i2c_busses(struct intelfb_info *dinfo);
 #endif
 
 #endif /* _INTELFB_H */
diff --git a/drivers/video/intelfb/intelfb_i2c.c b/drivers/video/intelfb/intelfb_i2c.c
index d73572355c57..c1113d6e941d 100644
--- a/drivers/video/intelfb/intelfb_i2c.c
+++ b/drivers/video/intelfb/intelfb_i2c.c
@@ -182,3 +182,19 @@ void intelfb_create_i2c_busses(struct intelfb_info *dinfo)
 	}
 	dinfo->num_outputs = i;
 }
+
+void intelfb_delete_i2c_busses(struct intelfb_info *dinfo)
+{
+	int i;
+
+	for (i = 0; i < MAX_OUTPUTS; i++) {
+		if (dinfo->output[i].i2c_bus.dinfo) {
+			i2c_bit_del_bus(&dinfo->output[i].i2c_bus.adapter);
+			dinfo->output[i].i2c_bus.dinfo = NULL;
+		}
+		if (dinfo->output[i].ddc_bus.dinfo) {
+			i2c_bit_del_bus(&dinfo->output[i].ddc_bus.adapter);
+			dinfo->output[i].ddc_bus.dinfo = NULL;
+		}
+	}
+}
diff --git a/drivers/video/intelfb/intelfbdrv.c b/drivers/video/intelfb/intelfbdrv.c
index f412b5ab8f98..f6e30b3d1081 100644
--- a/drivers/video/intelfb/intelfbdrv.c
+++ b/drivers/video/intelfb/intelfbdrv.c
@@ -474,6 +474,11 @@ cleanup(struct intelfb_info *dinfo)
 		agp_free_memory(dinfo->gtt_ring_mem);
 	}
 
+#ifdef CONFIG_FB_INTEL_I2C
+	/* un-register I2C bus */
+	intelfb_delete_i2c_busses(dinfo);
+#endif
+
 	if (dinfo->mmio_base)
 		iounmap((void __iomem *)dinfo->mmio_base);
 	if (dinfo->aperture.virtual)
-- 
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