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 (file)
--- 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 d735723..c1113d6 100644 (file)
--- 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 f412b5a..f6e30b3 100644 (file)
--- 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)