drm/display: Move SCDC helpers into display-helper library

SCDC is the Status and Control Data Channel for HDMI. Move the SCDC
helpers into display/ and split the header into files for core and
helpers. Update all affected drivers. No functional changes.

To avoid the proliferation of Kconfig options, SCDC is part of DRM's
support for HDMI. If necessary, a new option could make SCDC an
independent feature.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220421073108.19226-9-tzimmermann@suse.de

12 files changed, 13 insertions, 10 deletions

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 746a3a4953f3..15fe3163f822 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -63,7 +63,7 @@ drm_kms_helper-y := drm_bridge_connector.o drm_crtc_helper.o \
 		drm_plane_helper.o drm_atomic_helper.o \
 		drm_kms_helper_common.o \
 		drm_simple_kms_helper.o drm_modeset_helper.o \
-		drm_scdc_helper.o drm_gem_atomic_helper.o \
+		drm_gem_atomic_helper.o \
 		drm_gem_framebuffer_helper.o \
 		drm_atomic_state_helper.o drm_damage_helper.o \
 		drm_format_helper.o drm_self_refresh_helper.o drm_rect.o
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 9ddab6c09814..3e1be9894ed1 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -26,13 +26,13 @@
 
 #include <drm/bridge/dw_hdmi.h>
 #include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_scdc_helper.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_of.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_scdc_helper.h>
 
 #include "dw-hdmi-audio.h"
 #include "dw-hdmi-cec.h"
diff --git a/drivers/gpu/drm/display/Makefile b/drivers/gpu/drm/display/Makefile
index db644e7a550d..52cdda1180d9 100644
--- a/drivers/gpu/drm/display/Makefile
+++ b/drivers/gpu/drm/display/Makefile
@@ -8,7 +8,8 @@ drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_HELPER) += drm_dp_dual_mode_helper.o
 						      drm_dp_mst_topology.o \
 						      drm_dsc_helper.o
 drm_display_helper-$(CONFIG_DRM_DISPLAY_HDCP_HELPER) += drm_hdcp_helper.o
-drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_HELPER) += drm_hdmi_helper.o
+drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_HELPER) += drm_hdmi_helper.o \
+							drm_scdc_helper.o
 drm_display_helper-$(CONFIG_DRM_DP_AUX_CHARDEV) += drm_dp_aux_dev.o
 drm_display_helper-$(CONFIG_DRM_DP_CEC) += drm_dp_cec.o
 
diff --git a/drivers/gpu/drm/drm_scdc_helper.c b/drivers/gpu/drm/display/drm_scdc_helper.c
index 48a382464d54..81881e81ceae 100644
--- a/drivers/gpu/drm/drm_scdc_helper.c
+++ b/drivers/gpu/drm/display/drm_scdc_helper.c
@@ -21,11 +21,12 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
 
+#include <drm/display/drm_scdc_helper.h>
 #include <drm/drm_print.h>
-#include <drm/drm_scdc_helper.h>
 
 /**
  * DOC: scdc helpers
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 8d5f0cbbf0b4..7a8482b75071 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -42,7 +42,6 @@
 #include <drm/drm_edid.h>
 #include <drm/drm_encoder.h>
 #include <drm/drm_print.h>
-#include <drm/drm_scdc_helper.h>
 
 #include "drm_crtc_internal.h"
 
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 027cc4cc38d9..dd02afaac43f 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -27,8 +27,8 @@
 
 #include <linux/string_helpers.h>
 
+#include <drm/display/drm_scdc_helper.h>
 #include <drm/drm_privacy_screen_consumer.h>
-#include <drm/drm_scdc_helper.h>
 
 #include "i915_drv.h"
 #include "intel_audio.h"
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index ce47ae5bab20..1ae09431f53a 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -34,10 +34,10 @@
 
 #include <drm/display/drm_hdcp_helper.h>
 #include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_scdc_helper.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_edid.h>
-#include <drm/drm_scdc_helper.h>
 #include <drm/intel_lpe_audio.h>
 
 #include "i915_debugfs.h"
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 8ebe142c173c..34760164c271 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -5,6 +5,7 @@ config DRM_NOUVEAU
 	select IOMMU_API
 	select FW_LOADER
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HELPER
 	select DRM_KMS_HELPER
 	select DRM_TTM
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 45db61ac2bfe..4347f0b61797 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -34,13 +34,13 @@
 #include <linux/iopoll.h>
 
 #include <drm/display/drm_dp_helper.h>
+#include <drm/display/drm_scdc_helper.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_scdc_helper.h>
 #include <drm/drm_vblank.h>
 
 #include <nvif/push507c.h>
diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig
index 93c935902330..c36323f1c7e6 100644
--- a/drivers/gpu/drm/tegra/Kconfig
+++ b/drivers/gpu/drm/tegra/Kconfig
@@ -6,6 +6,7 @@ config DRM_TEGRA
 	depends on DRM
 	depends on OF
 	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_HDMI_HELPER
 	select DRM_DISPLAY_HELPER
 	select DRM_DP_AUX_BUS
 	select DRM_KMS_HELPER
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index 47b6c8e190cc..8af632740673 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -17,11 +17,11 @@
 #include <soc/tegra/pmc.h>
 
 #include <drm/display/drm_dp_helper.h>
+#include <drm/display/drm_scdc_helper.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_debugfs.h>
 #include <drm/drm_file.h>
 #include <drm/drm_panel.h>
-#include <drm/drm_scdc_helper.h>
 #include <drm/drm_simple_kms_helper.h>
 
 #include "dc.h"
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 650b555e7d36..6aadb65eb640 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -32,10 +32,10 @@
  */
 
 #include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_scdc_helper.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
-#include <drm/drm_scdc_helper.h>
 #include <linux/clk.h>
 #include <linux/component.h>
 #include <linux/i2c.h>