video: omap: add panel driver

The previous version of am335x-fb.c contained the functionalities of two
drivers that this patch has split. It was a video type driver that used
the same registration compatible string that now registers a panel type
driver. The proof of this is that two compatible strings were referred
to within the same driver.
There are now two drivers, each with its own compatible string,
functions and API.
Furthermore, the panel driver, in addition to decoding the display
timings, is now also able to manage the backlight.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>

11 files changed, 141 insertions, 44 deletions

diff --git a/arch/arm/dts/am335x-brppt1-mmc.dts b/arch/arm/dts/am335x-brppt1-mmc.dts
index 6f919711f0a..bd2f6c2e3e1 100644
--- a/arch/arm/dts/am335x-brppt1-mmc.dts
+++ b/arch/arm/dts/am335x-brppt1-mmc.dts
@@ -53,8 +53,6 @@
 		bkl-pwm = <&pwmbacklight>;
 		bkl-tps = <&tps_bl>;
 
-		u-boot,dm-pre-reloc;
-
 		panel-info {
 			ac-bias		= <255>;
 			ac-bias-intrpt	= <0>;
@@ -238,8 +236,19 @@
 	status = "okay";
 };
 
-&lcdc {
-	status = "disabled";
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+				status = "disabled";
+			};
+		};
+	};
 };
 
 &elm {
diff --git a/arch/arm/dts/am335x-brppt1-nand.dts b/arch/arm/dts/am335x-brppt1-nand.dts
index 9d4340f5914..67c609739fc 100644
--- a/arch/arm/dts/am335x-brppt1-nand.dts
+++ b/arch/arm/dts/am335x-brppt1-nand.dts
@@ -53,8 +53,6 @@
 		bkl-pwm = <&pwmbacklight>;
 		bkl-tps = <&tps_bl>;
 
-		u-boot,dm-pre-reloc;
-
 		panel-info {
 			ac-bias		= <255>;
 			ac-bias-intrpt	= <0>;
@@ -228,8 +226,19 @@
 	status = "disabled";
 };
 
-&lcdc {
-	status = "disabled";
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+				status = "disabled";
+			};
+		};
+	};
 };
 
 &elm {
diff --git a/arch/arm/dts/am335x-brppt1-spi.dts b/arch/arm/dts/am335x-brppt1-spi.dts
index c078af8fbae..ce3dce204d6 100644
--- a/arch/arm/dts/am335x-brppt1-spi.dts
+++ b/arch/arm/dts/am335x-brppt1-spi.dts
@@ -54,8 +54,6 @@
 		bkl-pwm = <&pwmbacklight>;
 		bkl-tps = <&tps_bl>;
 
-		u-boot,dm-pre-reloc;
-
 		panel-info {
 			ac-bias		= <255>;
 			ac-bias-intrpt	= <0>;
@@ -259,8 +257,19 @@
 	status = "okay";
 };
 
-&lcdc {
-	status = "disabled";
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+				status = "disabled";
+			};
+		};
+	};
 };
 
 &elm {
diff --git a/arch/arm/dts/am335x-brsmarc1.dts b/arch/arm/dts/am335x-brsmarc1.dts
index 7e9516e8f88..25cdb111648 100644
--- a/arch/arm/dts/am335x-brsmarc1.dts
+++ b/arch/arm/dts/am335x-brsmarc1.dts
@@ -59,7 +59,6 @@
 		/*backlight = <&tps_bl>; */
 		compatible = "ti,tilcdc,panel";
 		status = "okay";
-		u-boot,dm-pre-reloc;
 
 		panel-info {
 			ac-bias		= <255>;
@@ -298,10 +297,21 @@
 	status = "okay";
 };
 
-&lcdc {
-	status = "okay";
-	ti,no-reset-on-init;
-	ti,no-idle-on-init;
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+				status = "okay";
+				ti,no-reset-on-init;
+				ti,no-idle-on-init;
+			};
+		};
+	};
 };
 
 &elm {
diff --git a/arch/arm/dts/am335x-brxre1.dts b/arch/arm/dts/am335x-brxre1.dts
index 6091a12fb70..485c8e3613d 100644
--- a/arch/arm/dts/am335x-brxre1.dts
+++ b/arch/arm/dts/am335x-brxre1.dts
@@ -79,8 +79,6 @@
 
 		backlight = <&tps_bl>;
 
-		u-boot,dm-pre-reloc;
-
 		panel-info {
 			ac-bias		= <255>;
 			ac-bias-intrpt	= <0>;
@@ -254,10 +252,21 @@
 	status = "okay";
 };
 
-&lcdc {
-	status = "okay";
-	ti,no-reset-on-init;
-	ti,no-idle-on-init;
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+				status = "okay";
+				ti,no-reset-on-init;
+				ti,no-idle-on-init;
+			};
+		};
+	};
 };
 
 &elm {
diff --git a/arch/arm/dts/am335x-evm-u-boot.dtsi b/arch/arm/dts/am335x-evm-u-boot.dtsi
index 400a1d2cecb..4cf5f9928d5 100644
--- a/arch/arm/dts/am335x-evm-u-boot.dtsi
+++ b/arch/arm/dts/am335x-evm-u-boot.dtsi
@@ -5,13 +5,20 @@
 
 #include "am33xx-u-boot.dtsi"
 
-/ {
-	panel {
-		u-boot,dm-pre-reloc;
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+			};
+		};
 	};
 };
 
-
 &mmc3 {
 	status = "disabled";
 };
diff --git a/arch/arm/dts/am335x-evmsk-u-boot.dtsi b/arch/arm/dts/am335x-evmsk-u-boot.dtsi
index 96798330b1f..1003f4d31ad 100644
--- a/arch/arm/dts/am335x-evmsk-u-boot.dtsi
+++ b/arch/arm/dts/am335x-evmsk-u-boot.dtsi
@@ -7,8 +7,16 @@
 
 #include "am33xx-u-boot.dtsi"
 
-/ {
-	panel {
-		u-boot,dm-pre-reloc;
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+			};
+		};
 	};
 };
diff --git a/arch/arm/dts/am335x-guardian-u-boot.dtsi b/arch/arm/dts/am335x-guardian-u-boot.dtsi
index c866ce83f30..986f58e6648 100644
--- a/arch/arm/dts/am335x-guardian-u-boot.dtsi
+++ b/arch/arm/dts/am335x-guardian-u-boot.dtsi
@@ -10,16 +10,26 @@
 	ocp {
 		u-boot,dm-pre-reloc;
 	};
-
-	panel {
-		u-boot,dm-pre-reloc;
-	};
 };
 
 &l4_wkup {
 	u-boot,dm-pre-reloc;
 };
 
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+			};
+		};
+	};
+};
+
 &mmc1 {
 	u-boot,dm-pre-reloc;
 };
diff --git a/arch/arm/dts/am335x-pdu001-u-boot.dtsi b/arch/arm/dts/am335x-pdu001-u-boot.dtsi
index 4f4fc411f91..686a152fd9d 100644
--- a/arch/arm/dts/am335x-pdu001-u-boot.dtsi
+++ b/arch/arm/dts/am335x-pdu001-u-boot.dtsi
@@ -9,16 +9,26 @@
 	ocp {
 		u-boot,dm-pre-reloc;
 	};
-
-	panel {
-		u-boot,dm-pre-reloc;
-	};
 };
 
 &l4_wkup {
 	u-boot,dm-pre-reloc;
 };
 
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+			};
+		};
+	};
+};
+
 &scm {
 	u-boot,dm-pre-reloc;
 };
diff --git a/arch/arm/dts/am335x-pxm50-u-boot.dtsi b/arch/arm/dts/am335x-pxm50-u-boot.dtsi
index 65ed948c585..e5af9fdf893 100644
--- a/arch/arm/dts/am335x-pxm50-u-boot.dtsi
+++ b/arch/arm/dts/am335x-pxm50-u-boot.dtsi
@@ -7,8 +7,16 @@
 
 #include "am33xx-u-boot.dtsi"
 
-/ {
-	panel {
-		u-boot,dm-pre-reloc;
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+			};
+		};
 	};
 };
diff --git a/arch/arm/dts/am335x-rut-u-boot.dtsi b/arch/arm/dts/am335x-rut-u-boot.dtsi
index b16f75a7647..a38c2dc6072 100644
--- a/arch/arm/dts/am335x-rut-u-boot.dtsi
+++ b/arch/arm/dts/am335x-rut-u-boot.dtsi
@@ -7,8 +7,16 @@
 
 #include "am33xx-u-boot.dtsi"
 
-/ {
-	panel {
-		u-boot,dm-pre-reloc;
+&l4_per {
+
+	segment@300000 {
+
+		target-module@e000 {
+			u-boot,dm-pre-reloc;
+
+			lcdc: lcdc@0 {
+				u-boot,dm-pre-reloc;
+			};
+		};
 	};
 };