intelfb: add preliminary i2c support
Adds code to unregister the I2C buses in the cleanup function.
Signed-off-by: Dennis Munsie <dmunsie@cecropia.com>
diff --git a/drivers/video/intelfb/intelfb.h b/drivers/video/intelfb/intelfb.h
index 6ef38c9..abdadc2 100644
--- a/drivers/video/intelfb/intelfb.h
+++ b/drivers/video/intelfb/intelfb.h
@@ -367,6 +367,7 @@
#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 d735723..c1113d6 100644
--- a/drivers/video/intelfb/intelfb_i2c.c
+++ b/drivers/video/intelfb/intelfb_i2c.c
@@ -182,3 +182,19 @@
}
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 f412b5a..f6e30b3 100644
--- a/drivers/video/intelfb/intelfbdrv.c
+++ b/drivers/video/intelfb/intelfbdrv.c
@@ -474,6 +474,11 @@
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)