drivers: gpu: add VGLite gpu driver

Signed-off-by: 黄子懿 <[email protected]>

arch/riscv/boot/dts/canaan/k230.dtsi

@@ -383,6 +383,24 @@
 			clock-frequency = <400000>;
 			status = "disabled";
 		};
+
+		gpu: gpu@90800000 {
+			compatible = "verisilicon,gc8000ul";
+			reg = <0x0 0x90800000 0x0 0x1000>;
+			interrupts = <135 IRQ_TYPE_LEVEL_HIGH>;
+			power-domains = <&sysctl_power K230_PM_DOMAIN_DISP>;
+			resets = <
+				&sysctl_reset
+				K230_RESET_V2P5D_REG_OFFSET
+				K230_RESET_V2P5D_TYPE
+				K230_RESET_V2P5D_DONE_BIT
+				K230_RESET_V2P5D_ASSERT_BIT
+			>;
+			reset-names = "vglite";
+			clocks = <&disp_gpu>;
+			clock-names = "vglite";
+			status = "okay";
+		};
 	};
 };
 #include "k230_clock_provider.dtsi"

arch/riscv/configs/k230_defconfig

@@ -277,3 +277,4 @@ CONFIG_I2C_DESIGNWARE_PLATFORM=y
 CONFIG_INPUT_TOUCHSCREEN=y
 CONFIG_TOUCHSCREEN_EDT_FT5X06=y
 CONFIG_INPUT_EVDEV=y
+CONFIG_GPU_VGLITE=y

drivers/gpu/Makefile

@@ -2,6 +2,6 @@
 # drm/tegra depends on host1x, so if both drivers are built-in care must be
 # taken to initialize them in the correct order. Link order is the only way
 # to ensure this currently.
-obj-y			+= host1x/ drm/ vga/
+obj-y			+= host1x/ drm/ vga/ vglite/
 obj-$(CONFIG_IMX_IPUV3_CORE)	+= ipu-v3/
 obj-$(CONFIG_TRACE_GPU_MEM)		+= trace/

drivers/gpu/vglite/Kconfig

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config GPU_VGLITE
+	tristate "VGLite device driver"
+	help
+	  Add support for Verisilicon VGLite GPU driver.
+	  This driver is for single-thread context
+	  use. Make sure to control the GPU in single
+	  thread.

drivers/gpu/vglite/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+vglite-objs			:= vg_lite_hal.o vg_lite_kernel.o
+obj-$(CONFIG_GPU_VGLITE)	+= vglite.o