drm/radeon/kms: unify i2c handling

[pandora-kernel.git] / drivers / gpu / drm / radeon / radeon_i2c.c

diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c
index 5def6f5..e71f2eb 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_i2c.c
+++ b/drivers/gpu/drm/radeon/radeon_i2c.c
@@ -960,6 +960,59 @@ void radeon_i2c_destroy(struct radeon_i2c_chan *i2c)
        kfree(i2c);
 }
 
+/* Add the default buses */
+void radeon_i2c_init(struct radeon_device *rdev)
+{
+       if (rdev->is_atom_bios)
+               radeon_atombios_i2c_init(rdev);
+       else
+               radeon_combios_i2c_init(rdev);
+}
+
+/* remove all the buses */
+void radeon_i2c_fini(struct radeon_device *rdev)
+{
+       int i;
+
+       for (i = 0; i < RADEON_MAX_I2C_BUS; i++) {
+               if (rdev->i2c_bus[i]) {
+                       radeon_i2c_destroy(rdev->i2c_bus[i]);
+                       rdev->i2c_bus[i] = NULL;
+               }
+       }
+}
+
+/* Add additional buses */
+void radeon_i2c_add(struct radeon_device *rdev,
+                   struct radeon_i2c_bus_rec *rec,
+                   const char *name)
+{
+       struct drm_device *dev = rdev->ddev;
+       int i;
+
+       for (i = 0; i < RADEON_MAX_I2C_BUS; i++) {
+               if (!rdev->i2c_bus[i]) {
+                       rdev->i2c_bus[i] = radeon_i2c_create(dev, rec, name);
+                       return;
+               }
+       }
+}
+
+/* looks up bus based on id */
+struct radeon_i2c_chan *radeon_i2c_lookup(struct radeon_device *rdev,
+                                         struct radeon_i2c_bus_rec *i2c_bus)
+{
+       int i;
+
+       for (i = 0; i < RADEON_MAX_I2C_BUS; i++) {
+               if (rdev->i2c_bus[i] &&
+                   (rdev->i2c_bus[i]->rec.i2c_id == i2c_bus->i2c_id)) {
+                       return rdev->i2c_bus[i];
+               }
+       }
+       return NULL;
+}
+
 struct drm_encoder *radeon_best_encoder(struct drm_connector *connector)
 {
        return NULL;