From 08164ea6580063bc17a3e98fb696b9cff5ab4d2b Mon Sep 17 00:00:00 2001
From: "shengyang.chen" <shengyang.chen@starfivetech.com>
Date: Fri, 17 Jun 2022 15:04:44 +0800
Subject: [PATCH] riscv:linux:driver:drm:rgb2hdmi

update rgb2hdmi driver support

Signed-off-by:shengyang.chenshengyang.chen@starfivetech.com
---
 arch/riscv/boot/dts/starfive/jh7110-common.dtsi  |  6 +-
 arch/riscv/boot/dts/starfive/jh7110_pinctrl.dtsi | 10 +--
 drivers/gpu/drm/verisilicon/README               | 81 ++++++++++++++++++++++--
 drivers/gpu/drm/verisilicon/inno_hdmi.c          |  4 +-
 drivers/gpu/drm/verisilicon/vs_dc.c              | 34 +++++++++-
 drivers/gpu/drm/verisilicon/vs_drv.c             |  3 +
 6 files changed, 123 insertions(+), 15 deletions(-)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
index b08b333..cd24d62 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
@@ -666,6 +666,8 @@
 
 &hdmi_output {
 	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgb_pad_pins>;
 
 	ports {
 		#address-cells = <1>;
@@ -712,8 +714,8 @@
 };
 
 &mipi_dsi {
-	pinctrl-names = "default";
-	pinctrl-0 = <&mipitx_pins>;
+	//pinctrl-names = "default";
+	//pinctrl-0 = <&mipitx_pins>;
 	status = "disabled";
 };
 
diff --git a/arch/riscv/boot/dts/starfive/jh7110_pinctrl.dtsi b/arch/riscv/boot/dts/starfive/jh7110_pinctrl.dtsi
index 956cd79..af0b352 100644
--- a/arch/riscv/boot/dts/starfive/jh7110_pinctrl.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110_pinctrl.dtsi
@@ -258,8 +258,8 @@
 
 	i2c3_pins: i2c3-pins {
 		i2c3-pins-scl {
-			sf,pins = <PAD_GPIO38>;
-			sf,pinmux = <PAD_GPIO38_FUNC_SEL 0>;
+			sf,pins = <PAD_GPIO27>;
+			sf,pinmux = <PAD_GPIO27_FUNC_SEL 0>;
 			sf,pin-ioconfig = <IO(GPIO_IE(1)|(GPIO_PU(1)))>;
 			sf,pin-gpio-dout = <GPO_LOW>;
 			sf,pin-gpio-doen = <OEN_I2C3_IC_CLK_OE>;
@@ -267,8 +267,8 @@
 		};
 
 		i2c3-pins-sda {
-			sf,pins = <PAD_GPIO39>;
-			sf,pinmux = <PAD_GPIO39_FUNC_SEL 0>;
+			sf,pins = <PAD_GPIO26>;
+			sf,pinmux = <PAD_GPIO26_FUNC_SEL 0>;
 			sf,pin-ioconfig = <IO(GPIO_IE(1)|(GPIO_PU(1)))>;
 			sf,pin-gpio-dout = <GPO_LOW>;
 			sf,pin-gpio-doen = <OEN_I2C3_IC_DATA_OE>;
@@ -930,7 +930,7 @@
 		rgb-0-pins {
 			sf,pins = <PAD_GPIO36>;
 			sf,pinmux = <PAD_GPIO36_FUNC_SEL 1>;
-			sf,pin-ioconfig = <IO(GPIO_IE(0))>;
+			sf,pin-ioconfig = <IO(GPIO_IE(0)|GPIO_SLEW(1)|GPIO_DS(3))>;
 		};
 		rgb-1-pins {
 			sf,pins = <PAD_GPIO37>;
diff --git a/drivers/gpu/drm/verisilicon/README b/drivers/gpu/drm/verisilicon/README
index b8225f4..6037b0a 100644
--- a/drivers/gpu/drm/verisilicon/README
+++ b/drivers/gpu/drm/verisilicon/README
@@ -1,4 +1,4 @@
-build drm need to config：
+build drm need to config:
 # CONFIG_DRM_I2C_ADV7511_CEC is not set
 CONFIG_DRM_VERISILICON=y
 CONFIG_DRM_I2C_ADV7513=y
@@ -8,7 +8,7 @@ CONFIG_DRM_LEGACY=y
 
 
 notes:
-1、DC8200 rgbpad GPIO 和其他模块存在大规模冲突，需要等evb板子做进一步确认
+1、DC8200 rgbpad GPIO 和其他模块存在大规模冲突, 需要等evb板子做进一步确认
 
 2、evb板子当前与hdmi冲突的gpio有
 i2c0 i2c1 i2c2 i2c3 sdio1 tdm
@@ -17,6 +17,8 @@ i2c0 i2c1 i2c2 i2c3 sdio1 tdm
 
 
 
+===============================================================================================
+
 build drm mipi-dsi need to config:
 # CONFIG_DRM_I2C_ADV7511_CEC is not set
 CONFIG_DRM_VERISILICON=y
@@ -25,12 +27,13 @@ CONFIG_DRM_LEGACY=y
 CONFIG_STARFIVE_DSI=y
 CONFIG_PHY_M31_DPHY_RX0=y
 #STARFIVE_INNO_HDMI is not set
+#CONFIG_DRM_I2C_NXP_TDA998X is not set
 # CONFIG_DRM_VGEM is not set
 # CONFIG_DRM_VKMS is not set
 
 notes:
 1.
-测试mipi-dsi时，在编译前需要打开的dts节点有：
+测试mipi-dsi时,在编译前需要打开的dts节点有:
 jh7110.dtsi: 
 dc8200, encoder: display-encoder, mipi_dphy, mipi_dsi, mipi_panel
 
@@ -40,7 +43,75 @@ jh7100-common.dtsi:
 
 2.
 evb板子当前与mipi-dsi冲突的gpio有:
-i2c0, i2c3, hdmi(inno), hdmi_output(rgb), sdio1(mmc1)
+sdio1(mmc1)
 
 调试mipi-dsi的时候建议在jh7100-common.dtsi文件
-将这些模块的pin的结点进行注释或者将node disabled
\ No newline at end of file
+将这些模块的pin的结点进行注释或者将node disabled
+
+3.
+mipi-dsi通路目前和rgb2hdmi通路是互斥的,
+不能同时打开。使用某一个时需要关闭另一个
+如：
+使用mipi-dsi需要关闭
+CONFIG_DRM_I2C_NXP_TDA998X
+
+
+===============================================================================================
+
+
+build rgb2hdmi channel need to config:
+
+CONFIG_DRM=y
+CONFIG_DRM_I2C_NXP_TDA998X=y
+CONFIG_DRM_VERISILICON=y
+CONFIG_STARFIVE_INNO_HDMI=y
+# CONFIG_DRM_IMG_NULLDISP is not set
+CONFIG_DRM_LEGACY=y
+# CONFIG_STARFIVE_DSI is not set
+
+
+notes:
+1.
+evb板子当前与tda998x-rgb2hdmi通路存在gpio冲突的模块有
+pdm0, i2srx_3ch, pwmdac, spi0~spi6, inno_hdmi, tdm, i2c0, can1, ptc, vin_sysctl, pcie0
+调试tda998x-rgb2hdmi通路的时候建议在jh7110-common.dtsi文件
+将这些模块的pin的结点进行注释或者将node disabled(&hdmi节点比较特殊,详见3)
+
+2.
+mipi-dsi通路目前和rgb2hdmi通路是互斥的
+不能同时打开。使用某一个时需要关闭另一个
+如：
+使用rgb2hdmi需要关闭
+CONFIG_STARFIVE_DSI
+
+3.
+关于&hdmi节点
+在使用rgb2hdmi时需要将其打开(status = "okay";)
+并将其引用的pin(pinctrl-0 = <&inno_hdmi_pins>;) 注释掉
+如:
+&hdmi {
+	status = "okay";//okay				//rgb need this, connector/encoder problem
+	//pinctrl-names = "default";		//if rgb, comment them
+	//pinctrl-0 = <&inno_hdmi_pins>;	//if rgb, comment them
+
+	hdmi_in: port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		hdmi_in_lcdc: endpoint@0 {
+			reg = <0>;
+			remote-endpoint = <&dc_out_dpi1>;
+		};
+	};
+};
+
+4.
+测试rgb2hdmi需要打开的dts节点有:
+jh7110.dtsi:
+hdmi_output, hdmi, dc8200
+
+jh7110-common.dtsi:
+&hdmi_output, &hdmi(详见3), &dc8200, &i2c2
+
+关闭节点:
+jh7100-common.dtsi:
+&encoder
\ No newline at end of file
diff --git a/drivers/gpu/drm/verisilicon/inno_hdmi.c b/drivers/gpu/drm/verisilicon/inno_hdmi.c
index f15ce1a..40fe808 100644
--- a/drivers/gpu/drm/verisilicon/inno_hdmi.c
+++ b/drivers/gpu/drm/verisilicon/inno_hdmi.c
@@ -1153,7 +1153,9 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
 		goto err_disable_clk;
 	}
 	//inno_hdmi_set_pinmux();//20220601 disable for testing dts pinctrl setting
-	//inno_hdmi_init(hdmi);
+#ifdef CONFIG_DRM_I2C_NXP_TDA998X
+	inno_hdmi_init(hdmi);
+#endif
 	//inno_hdmi_get_edid(hdmi,51200000, data);//20220525
 	inno_hdmi_reset(hdmi);
 
diff --git a/drivers/gpu/drm/verisilicon/vs_dc.c b/drivers/gpu/drm/verisilicon/vs_dc.c
index 13291f9..3e26baa 100644
--- a/drivers/gpu/drm/verisilicon/vs_dc.c
+++ b/drivers/gpu/drm/verisilicon/vs_dc.c
@@ -805,6 +805,11 @@ static int dc_vout_clk_rst_init(struct device *dev, struct vs_dc *dc)
 
 int sys_vout_mux_config(void)
 {
+	#ifdef CONFIG_DRM_I2C_NXP_TDA998X//tda998x-rgb2hdmi
+		SET_U0_LCD_DATA_MAPPING_DPI_DP_SEL(0);//DC8200_INTERFACE_DPI
+		SET_U0_LCD_DATA_MAPPING_DP_RGB_FMT(0);//0-RGB888
+		SET_U0_DISPLAY_PANEL_MUX_PANEL_SEL(0);//panel 0
+	#else
     if(1){
 		SET_U0_HDMI_DATA_MAPPING_DPI_DP_SEL(0);
 		SET_U0_HDMI_DATA_MAPPING_DPI_BIT_DEPTH(0);
@@ -813,13 +818,20 @@ int sys_vout_mux_config(void)
 		SET_U2_DISPLAY_PANEL_MUX_PANEL_SEL(0);
 
     }
+	#endif
     return 0;
 }
 
 int sys_dispctrl_clk(void)
 {
-	_SWITCH_CLOCK_CLK_U0_DC8200_CLK_PIX0_SOURCE_CLK_HDMITX0_PIXELCLK_;
-	//_SWITCH_CLOCK_CLK_U0_DC8200_CLK_PIX0_SOURCE_CLK_DC8200_PIX0_;
+	#ifdef CONFIG_DRM_I2C_NXP_TDA998X//tda998x-rgb2hdmi
+		_SWITCH_CLOCK_CLK_U0_DC8200_CLK_PIX1_SOURCE_CLK_HDMITX0_PIXELCLK_;
+		_SWITCH_CLOCK_CLK_U0_DC8200_CLK_PIX0_SOURCE_CLK_HDMITX0_PIXELCLK_;
+		//_ENABLE_CLOCK_CLK_DOM_VOUT_TOP_LCD_CLK_;//disabled standard
+	#else
+		_SWITCH_CLOCK_CLK_U0_DC8200_CLK_PIX0_SOURCE_CLK_HDMITX0_PIXELCLK_;
+		//_SWITCH_CLOCK_CLK_U0_DC8200_CLK_PIX0_SOURCE_CLK_DC8200_PIX0_;
+	#endif
 
     return 0;
 }
@@ -891,6 +903,7 @@ static int dc_init(struct device *dev)
 		return ret;
 	}
 	#ifdef CONFIG_STARFIVE_DSI
+	dev_info(dev, "dc mipi channel\n");
 	dc->vout_src = devm_clk_get(dev, "vout_src");
 	if (IS_ERR(dc->vout_src)){
 		dev_err(dev,"failed to get dc->vout_src\n");
@@ -907,6 +920,23 @@ static int dc_init(struct device *dev)
 		return ret;
 	}
 	#endif
+
+	#ifdef CONFIG_DRM_I2C_NXP_TDA998X
+	_ENABLE_CLOCK_CLK_DOM_VOUT_TOP_LCD_CLK_;
+	/*
+	dev_info(dev, "dc rgb2hdmi channel\n");
+	dc->vout_top_lcd = devm_clk_get(dev, "vout_top_lcd");
+	if (IS_ERR(dc->vout_top_lcd)){
+		dev_err(dev,"failed to get dc->vout_top_lcd\n");
+		return PTR_ERR(dc->vout_top_lcd);
+	}
+	ret = clk_prepare_enable(dc->vout_top_lcd);
+	if (ret) {
+		dev_err(dev, "failed to prepare/enable vout_top_lcd\n");
+		return ret;
+	}
+	*/
+	#endif
 	printk("====> %s, %d.\n", __func__, __LINE__);
 
 	ret = dc_hw_init(&dc->hw);
diff --git a/drivers/gpu/drm/verisilicon/vs_drv.c b/drivers/gpu/drm/verisilicon/vs_drv.c
index 3529586..0508da6 100644
--- a/drivers/gpu/drm/verisilicon/vs_drv.c
+++ b/drivers/gpu/drm/verisilicon/vs_drv.c
@@ -314,6 +314,9 @@ static struct platform_driver *drm_sub_drivers[] = {
 	/* encoder */
 	//&simple_encoder_driver,
 	//&starfive_encoder_driver,
+#ifdef CONFIG_DRM_I2C_NXP_TDA998X
+	&simple_encoder_driver,
+#endif
 
 #ifdef CONFIG_VERISILICON_VIRTUAL_DISPLAY
 	&virtual_display_platform_driver,
-- 
2.7.4