drm/radeon/kms: initial radeon displayport porting

This is enough to retrieve EDID and DPCP.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 19 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 135693d5437e..ce1cdc748f1f 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -33,6 +33,7 @@
 #include <drm_crtc.h>
 #include <drm_mode.h>
 #include <drm_edid.h>
+#include <drm_dp_helper.h>
 #include <linux/i2c.h>
 #include <linux/i2c-id.h>
 #include <linux/i2c-algo-bit.h>
@@ -164,10 +165,14 @@ struct radeon_pll {
 };
 
 struct radeon_i2c_chan {
-        struct drm_device *dev;
         struct i2c_adapter adapter;
-        struct i2c_algo_bit_data algo;
+        struct drm_device *dev;
+        union {
+                struct i2c_algo_dp_aux_data dp;
+                struct i2c_algo_bit_data bit;
+        } algo;
         struct radeon_i2c_bus_rec rec;
+        uint8_t i2c_id;
 };
 
 /* mostly for macs, but really any system without connector tables */
@@ -328,6 +333,9 @@ struct radeon_encoder {
 struct radeon_connector_atom_dig {
         uint32_t igp_lane_info;
         bool linkb;
+        uint16_t uc_i2c_id;
+        struct radeon_i2c_chan *dp_i2c_bus;
+        u8 dpcp[8];
 };
 
 struct radeon_connector {
@@ -344,6 +352,8 @@ struct radeon_connector {
         void *con_priv;
         bool dac_load_detect;
         uint16_t connector_object_id;
+        /* need to keep this for display port */
+//      
 };
 
 struct radeon_framebuffer {
@@ -351,6 +361,13 @@ struct radeon_framebuffer {
         struct drm_gem_object *obj;
 };
 
+extern int radeon_dp_getsinktype(struct radeon_connector *radeon_connector);
+extern void radeon_dp_getdpcp(struct radeon_connector *connector);
+extern int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
+                                uint8_t write_byte, uint8_t *read_byte);
+
+extern struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev,
+                                                    const char *name, bool dp, u8 i2c_id);
 extern struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
                                                  struct radeon_i2c_bus_rec *rec,
                                                  const char *name);