drm: bridge: analogix/dp: split exynos dp driver to bridge directory

Split the dp core driver from exynos directory to bridge directory,
and rename the core driver to analogix_dp_*, rename the platform
code to exynos_dp.

Beside the new analogix_dp driver would export six hooks.
"analogix_dp_bind()" and "analogix_dp_unbind()"
"analogix_dp_suspned()" and "analogix_dp_resume()"
"analogix_dp_detect()" and "analogix_dp_get_modes()"

The bind/unbind symbols is used for analogix platform driver to connect
with analogix_dp core driver. And the detect/get_modes is used for analogix
platform driver to init the connector.

They reason why connector need register in helper driver is rockchip drm
haven't implement the atomic API, but Exynos drm have implement it, so
there would need two different connector helper functions, that's why we
leave the connector register in helper driver.
Acked-by: Inki Dae <inki.dae@samsung.com>
Tested-by: Caesar Wang <wxt@rock-chips.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

drivers/gpu/drm/bridge/Kconfig

@@ -40,4 +40,6 @@ config DRM_PARADE_PS8622
 	---help---
 	  Parade eDP-LVDS bridge chip driver.
 
+source "drivers/gpu/drm/bridge/analogix/Kconfig"
+
 endmenu

drivers/gpu/drm/bridge/Makefile

@@ -4,3 +4,4 @@ obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o
 obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o
 obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
 obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
+obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/

drivers/gpu/drm/bridge/analogix/Kconfig

+config DRM_ANALOGIX_DP
+	tristate
+	depends on DRM

drivers/gpu/drm/bridge/analogix/Makefile

+analogix_dp-objs := analogix_dp_core.o analogix_dp_reg.o
+obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp.o

drivers/gpu/drm/exynos/exynos_dp_reg.h → drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h

 /*
- * Register definition file for Samsung DP driver
+ * Register definition file for Analogix DP core driver
  *
  * Copyright (C) 2012 Samsung Electronics Co., Ltd.
  * Author: Jingoo Han <jg1.han@samsung.com>
@@ -9,8 +9,8 @@
  * published by the Free Software Foundation.
  */
 
-#ifndef _EXYNOS_DP_REG_H
-#define _EXYNOS_DP_REG_H
+#ifndef _ANALOGIX_DP_REG_H
+#define _ANALOGIX_DP_REG_H
 
 #define EXYNOS_DP_TX_SW_RESET			0x14
 #define EXYNOS_DP_FUNC_EN_1			0x18
@@ -363,4 +363,4 @@
 #define VIDEO_MODE_SLAVE_MODE			(0x1 << 0)
 #define VIDEO_MODE_MASTER_MODE			(0x0 << 0)
 
-#endif /* _EXYNOS_DP_REG_H */
+#endif /* _ANALOGIX_DP_REG_H */

drivers/gpu/drm/exynos/Kconfig

@@ -71,8 +71,9 @@ config DRM_EXYNOS_DSI
 	  This enables support for Exynos MIPI-DSI device.
 
 config DRM_EXYNOS_DP
-	bool "Display Port"
+	bool "EXYNOS specific extensions for Analogix DP driver"
 	depends on DRM_EXYNOS_FIMD || DRM_EXYNOS7_DECON
+	select DRM_ANALOGIX_DP
 	default DRM_EXYNOS
 	select DRM_PANEL
 	help

drivers/gpu/drm/exynos/Makefile

@@ -12,7 +12,7 @@ exynosdrm-$(CONFIG_DRM_EXYNOS5433_DECON)	+= exynos5433_drm_decon.o
 exynosdrm-$(CONFIG_DRM_EXYNOS7_DECON)	+= exynos7_drm_decon.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_DPI)	+= exynos_drm_dpi.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_DSI)	+= exynos_drm_dsi.o
-exynosdrm-$(CONFIG_DRM_EXYNOS_DP)	+= exynos_dp_core.o exynos_dp_reg.o
+exynosdrm-$(CONFIG_DRM_EXYNOS_DP)	+= exynos_dp_core.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_MIXER)	+= exynos_mixer.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI)	+= exynos_hdmi.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_VIDI)	+= exynos_drm_vidi.o

include/drm/bridge/analogix_dp.h

+/*
+ * Analogix DP (Display Port) Core interface driver.
+ *
+ * Copyright (C) 2015 Rockchip Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#ifndef _ANALOGIX_DP_H_
+#define _ANALOGIX_DP_H_
+
+#include <drm/drm_crtc.h>
+
+enum analogix_dp_devtype {
+	EXYNOS_DP,
+};
+
+struct analogix_dp_plat_data {
+	enum analogix_dp_devtype dev_type;
+	struct drm_panel *panel;
+	struct drm_encoder *encoder;
+	struct drm_connector *connector;
+
+	int (*power_on)(struct analogix_dp_plat_data *);
+	int (*power_off)(struct analogix_dp_plat_data *);
+	int (*attach)(struct analogix_dp_plat_data *, struct drm_bridge *,
+		      struct drm_connector *);
+	int (*get_modes)(struct analogix_dp_plat_data *);
+};
+
+int analogix_dp_resume(struct device *dev);
+int analogix_dp_suspend(struct device *dev);
+
+int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
+		     struct analogix_dp_plat_data *plat_data);
+void analogix_dp_unbind(struct device *dev, struct device *master, void *data);
+
+#endif /* _ANALOGIX_DP_H_ */