Merge branch 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/…

…kernel/git/daeinki/drm-exynos into drm-next

   This pull request includes i80 interface support, module auto-loading
   ipp consolidation, and trivail fixups and cleanups.

Summary:
- Add i80 interface support. For this, we added some features to
  Exynos drm framework, which don't affect any other SoC and common
  framework because they are specific to Exynos drm.
- Add module auto-loading support. For this, sub drivers of Exynos drm
  exports their of match tables to userspace. This allows modules to be
  loaded automatically based on devicetree information
- Consolidate ipp driver. This patch just just includes cleanups and
  a littl bit refactoring codes.

If there is any problem, please kindly let me know.

* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: (38 commits)
  drm/exynos: g2d: let exynos_g2d_get_ver_ioctl fail
  drm/exynos: g2d: make ioctls more robust
  drm/exynos: hdmi: add null check for hdmiphy_port
  drm/exynos: control blending of mixer graphic layer 0
  drm/exynos: Add MODULE_DEVICE_TABLE entries for various components
  Subject: Revert "drm/exynos: remove MODULE_DEVICE_TABLE definitions"
  Subject: Revert "drm/exynos: fix module build error"
  drm/exynos/ipp: simplify ipp_find_driver
  drm/exynos/ipp: simplify ipp_create_id
  drm/exynos/ipp: remove redundant messages
  drm/exynos/ipp: simplify ipp_find_obj
  drm/exynos/ipp: remove useless registration checks
  drm/exynos/ipp: simplify memory check function
  drm/exynos/ipp: remove incorrect checks of list_first_entry result
  drm/exynos/ipp: remove temporary variable
  drm/exynos/ipp: correct address type
  drm/exynos/ipp: remove struct exynos_drm_ipp_private
  drm/exynos/ipp: remove unused field from exynos_drm_ipp_private
  drm/exynos/ipp: remove type casting
  drm/exynos: g2d: add exynos4212 as a compatible device.
  ...

Documentation/devicetree/bindings/video/exynos_dsim.txt

@@ -1,7 +1,9 @@
 Exynos MIPI DSI Master
 
 Required properties:
-  - compatible: "samsung,exynos4210-mipi-dsi"
+  - compatible: value should be one of the following
+		"samsung,exynos4210-mipi-dsi" /* for Exynos4 SoCs */
+		"samsung,exynos5410-mipi-dsi" /* for Exynos5410/5420/5440 SoCs */
   - reg: physical base address and length of the registers set for the device
   - interrupts: should contain DSI interrupt
   - clocks: list of clock specifiers, must contain an entry for each required

Documentation/devicetree/bindings/video/exynos_mixer.txt

@@ -4,8 +4,9 @@ Required properties:
 - compatible: value should be one of the following:
 	1) "samsung,exynos5-mixer" <DEPRECATED>
 	2) "samsung,exynos4210-mixer"
-	3) "samsung,exynos5250-mixer"
-	4) "samsung,exynos5420-mixer"
+	3) "samsung,exynos4212-mixer"
+	4) "samsung,exynos5250-mixer"
+	5) "samsung,exynos5420-mixer"
 
 - reg: physical base address of the mixer and length of memory mapped
 	region.

Documentation/devicetree/bindings/video/samsung-fimd.txt

@@ -44,6 +44,34 @@ Optional Properties:
 - display-timings: timing settings for FIMD, as described in document [1].
 		Can be used in case timings cannot be provided otherwise
 		or to override timings provided by the panel.
+- samsung,sysreg: handle to syscon used to control the system registers
+- i80-if-timings: timing configuration for lcd i80 interface support.
+  - cs-setup: clock cycles for the active period of address signal is enabled
+              until chip select is enabled.
+              If not specified, the default value(0) will be used.
+  - wr-setup: clock cycles for the active period of CS signal is enabled until
+              write signal is enabled.
+              If not specified, the default value(0) will be used.
+  - wr-active: clock cycles for the active period of CS is enabled.
+               If not specified, the default value(1) will be used.
+  - wr-hold: clock cycles for the active period of CS is disabled until write
+             signal is disabled.
+             If not specified, the default value(0) will be used.
+
+  The parameters are defined as:
+
+    VCLK(internal)  __|??????|_____|??????|_____|??????|_____|??????|_____|??
+                      :            :            :            :            :
+    Address Output  --:<XXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XXXXXXXXXXXX:XX
+                      | cs-setup+1 |            :            :            :
+                      |<---------->|            :            :            :
+    Chip Select     ???????????????|____________:____________:____________|??
+                                   | wr-setup+1 |            | wr-hold+1  |
+                                   |<---------->|            |<---------->|
+    Write Enable    ????????????????????????????|____________|???????????????
+                                                | wr-active+1|
+                                                |<---------->|
+    Video Data      ----------------------------<XXXXXXXXXXXXXXXXXXXXXXXXX>--
 
 The device node can contain 'port' child nodes according to the bindings defined
 in [2]. The following are properties specific to those nodes:

arch/arm/boot/dts/exynos4.dtsi

@@ -608,6 +608,7 @@
 		clocks = <&clock CLK_SCLK_FIMD0>, <&clock CLK_FIMD0>;
 		clock-names = "sclk_fimd", "fimd";
 		samsung,power-domain = <&pd_lcd0>;
+		samsung,sysreg = <&sys_reg>;
 		status = "disabled";
 	};
 };

arch/arm/boot/dts/exynos5.dtsi

@@ -87,6 +87,7 @@
 		reg = <0x14400000 0x40000>;
 		interrupt-names = "fifo", "vsync", "lcd_sys";
 		interrupts = <18 4>, <18 5>, <18 6>;
+		samsung,sysreg = <&sysreg_system_controller>;
 		status = "disabled";
 	};
 

arch/arm/boot/dts/exynos5420.dtsi

@@ -517,6 +517,26 @@
 		phy-names = "dp";
 	};
 
+	mipi_phy: video-phy@10040714 {
+		compatible = "samsung,s5pv210-mipi-video-phy";
+		reg = <0x10040714 12>;
+		#phy-cells = <1>;
+	};
+
+	dsi@14500000 {
+		compatible = "samsung,exynos5410-mipi-dsi";
+		reg = <0x14500000 0x10000>;
+		interrupts = <0 82 0>;
+		samsung,power-domain = <&disp_pd>;
+		phys = <&mipi_phy 1>;
+		phy-names = "dsim";
+		clocks = <&clock CLK_DSIM1>, <&clock CLK_SCLK_MIPI1>;
+		clock-names = "bus_clk", "pll_clk";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
+
 	fimd: fimd@14400000 {
 		samsung,power-domain = <&disp_pd>;
 		clocks = <&clock CLK_SCLK_FIMD1>, <&clock CLK_FIMD1>;

drivers/gpu/drm/exynos/Kconfig

@@ -28,6 +28,7 @@ config DRM_EXYNOS_FIMD
 	bool "Exynos DRM FIMD"
 	depends on DRM_EXYNOS && !FB_S3C
 	select FB_MODE_HELPERS
+	select MFD_SYSCON
 	help
 	  Choose this option if you want to use Exynos FIMD for DRM.
 

drivers/gpu/drm/exynos/exynos_dp_core.c

@@ -1376,6 +1376,7 @@ static const struct of_device_id exynos_dp_match[] = {
 	{ .compatible = "samsung,exynos5-dp" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, exynos_dp_match);
 
 struct platform_driver dp_driver = {
 	.probe		= exynos_dp_probe,
@@ -1390,4 +1391,4 @@ struct platform_driver dp_driver = {
 
 MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
 MODULE_DESCRIPTION("Samsung SoC DP Driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");

drivers/gpu/drm/exynos/exynos_drm_crtc.c

@@ -69,8 +69,10 @@ static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
 
 	if (mode > DRM_MODE_DPMS_ON) {
 		/* wait for the completion of page flip. */
-		wait_event(exynos_crtc->pending_flip_queue,
-				atomic_read(&exynos_crtc->pending_flip) == 0);
+		if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
+				!atomic_read(&exynos_crtc->pending_flip),
+				HZ/20))
+			atomic_set(&exynos_crtc->pending_flip, 0);
 		drm_vblank_off(crtc->dev, exynos_crtc->pipe);
 	}
 
@@ -259,6 +261,7 @@ static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
 			spin_lock_irq(&dev->event_lock);
 			drm_vblank_put(dev, exynos_crtc->pipe);
 			list_del(&event->base.link);
+			atomic_set(&exynos_crtc->pending_flip, 0);
 			spin_unlock_irq(&dev->event_lock);
 
 			goto out;
@@ -508,3 +511,11 @@ int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
 
 	return -EPERM;
 }
+
+void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
+{
+	struct exynos_drm_manager *manager = to_exynos_crtc(crtc)->manager;
+
+	if (manager->ops->te_handler)
+		manager->ops->te_handler(manager);
+}

drivers/gpu/drm/exynos/exynos_drm_crtc.h

@@ -36,4 +36,11 @@ void exynos_drm_crtc_plane_disable(struct drm_crtc *crtc, int zpos);
 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
 					unsigned int out_type);
 
+/*
+ * This function calls the crtc device(manager)'s te_handler() callback
+ * to trigger to transfer video image at the tearing effect synchronization
+ * signal.
+ */
+void exynos_drm_crtc_te_handler(struct drm_crtc *crtc);
+
 #endif

drivers/gpu/drm/exynos/exynos_drm_drv.c

@@ -358,7 +358,7 @@ static int exynos_drm_sys_suspend(struct device *dev)
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
 	pm_message_t message;
 
-	if (pm_runtime_suspended(dev))
+	if (pm_runtime_suspended(dev) || !drm_dev)
 		return 0;
 
 	message.event = PM_EVENT_SUSPEND;
@@ -369,7 +369,7 @@ static int exynos_drm_sys_resume(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
 
-	if (pm_runtime_suspended(dev))
+	if (pm_runtime_suspended(dev) || !drm_dev)
 		return 0;
 
 	return exynos_drm_resume(drm_dev);

drivers/gpu/drm/exynos/exynos_drm_drv.h

@@ -186,6 +186,8 @@ struct exynos_drm_display {
  * @win_commit: apply hardware specific overlay data to registers.
  * @win_enable: enable hardware specific overlay.
  * @win_disable: disable hardware specific overlay.
+ * @te_handler: trigger to transfer video image at the tearing effect
+ *	synchronization signal if there is a page flip request.
  */
 struct exynos_drm_manager;
 struct exynos_drm_manager_ops {
@@ -204,6 +206,7 @@ struct exynos_drm_manager_ops {
 	void (*win_commit)(struct exynos_drm_manager *mgr, int zpos);
 	void (*win_enable)(struct exynos_drm_manager *mgr, int zpos);
 	void (*win_disable)(struct exynos_drm_manager *mgr, int zpos);
+	void (*te_handler)(struct exynos_drm_manager *mgr);
 };
 
 /*
@@ -234,14 +237,9 @@ struct exynos_drm_g2d_private {
 	struct list_head	userptr_list;
 };
 
-struct exynos_drm_ipp_private {
-	struct device	*dev;
-	struct list_head	event_list;
-};
-
 struct drm_exynos_file_private {
 	struct exynos_drm_g2d_private	*g2d_priv;
-	struct exynos_drm_ipp_private	*ipp_priv;
+	struct device			*ipp_dev;
 	struct file			*anon_filp;
 };