brcm63xx: switch to hardware led controllers

Instead of bit banging SPI to talk to the GPIO chip, use the hardware
led controllers intended for controlling the LEDs.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

11 files changed, 238 insertions, 195 deletions

diff --git a/target/linux/brcm63xx/config-4.4 b/target/linux/brcm63xx/config-4.4
index 337c14c..f8ba4a0 100644
--- a/target/linux/brcm63xx/config-4.4
+++ b/target/linux/brcm63xx/config-4.4
@@ -80,7 +80,6 @@ CONFIG_GENERIC_SCHED_CLOCK=y
 CONFIG_GENERIC_SMP_IDLE_THREAD=y
 CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GPIOLIB=y
-CONFIG_GPIO_74X164=y
 CONFIG_GPIO_BCM63XX=y
 CONFIG_GPIO_DEVRES=y
 CONFIG_GPIO_GENERIC=y
@@ -139,6 +138,8 @@ CONFIG_IRQ_MIPS_CPU=y
 CONFIG_IRQ_WORK=y
 CONFIG_KEXEC=y
 CONFIG_KEXEC_CORE=y
+CONFIG_LEDS_BCM6328=y
+CONFIG_LEDS_BCM6358=y
 CONFIG_LEDS_GPIO=y
 CONFIG_LIBFDT=y
 CONFIG_MDIO_BOARDINFO=y
@@ -221,8 +222,6 @@ CONFIG_SERIAL_BCM63XX_CONSOLE=y
 CONFIG_SPI=y
 CONFIG_SPI_BCM63XX=y
 CONFIG_SPI_BCM63XX_HSSPI=y
-CONFIG_SPI_BITBANG=y
-CONFIG_SPI_GPIO=y
 CONFIG_SPI_MASTER=y
 CONFIG_SQUASHFS_EMBEDDED=y
 CONFIG_SRCU=y
diff --git a/target/linux/brcm63xx/dts/bcm6318.dtsi b/target/linux/brcm63xx/dts/bcm6318.dtsi
index c1dcad3..7c45051 100644
--- a/target/linux/brcm63xx/dts/bcm6318.dtsi
+++ b/target/linux/brcm63xx/dts/bcm6318.dtsi
@@ -166,6 +166,14 @@
 			};
 		};
 
+		leds: led-controller@10000200 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-leds";
+			reg = <0x10000200 0x24>;
+			status = "disabled";
+		};
+
 		hsspi: spi@10003000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/target/linux/brcm63xx/dts/bcm63268.dtsi b/target/linux/brcm63xx/dts/bcm63268.dtsi
index d64fe19..94c7dd0 100644
--- a/target/linux/brcm63xx/dts/bcm63268.dtsi
+++ b/target/linux/brcm63xx/dts/bcm63268.dtsi
@@ -210,5 +210,13 @@
 			interrupts = <6>;
 			/* clocks = <&clkctl 16>; */
 		};
+
+		leds: led-controller@10001900 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-leds";
+			reg = <0x10001900 0x24>;
+			status = "disabled";
+		};
 	};
 };
diff --git a/target/linux/brcm63xx/dts/bcm6328.dtsi b/target/linux/brcm63xx/dts/bcm6328.dtsi
index 0bb41cf..7a79aed 100644
--- a/target/linux/brcm63xx/dts/bcm6328.dtsi
+++ b/target/linux/brcm63xx/dts/bcm6328.dtsi
@@ -151,6 +151,14 @@
 			};
 		};
 
+		leds: led-controller@10000800 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-leds";
+			reg = <0x10000800 0x24>;
+			status = "disabled";
+		};
+
 		hsspi: spi@10001000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/target/linux/brcm63xx/dts/bcm6358.dtsi b/target/linux/brcm63xx/dts/bcm6358.dtsi
index 36b19e7..8feb3dd 100644
--- a/target/linux/brcm63xx/dts/bcm6358.dtsi
+++ b/target/linux/brcm63xx/dts/bcm6358.dtsi
@@ -155,6 +155,14 @@
 			reg = <0xfffe0098 0x4>;
 		};
 
+		leds: led-controller@fffe00d0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6358-leds";
+			reg = <0xfffe00d0 0x8>;
+			status = "disabled";
+		};
+
 		lsspi: spi@fffe0800 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/target/linux/brcm63xx/dts/bcm6362.dtsi b/target/linux/brcm63xx/dts/bcm6362.dtsi
index 11edf71..076fc6a 100644
--- a/target/linux/brcm63xx/dts/bcm6362.dtsi
+++ b/target/linux/brcm63xx/dts/bcm6362.dtsi
@@ -254,5 +254,13 @@
 			interrupts = <5>;
 			/* clocks = <&clkctl 16>; */
 		};
+
+		leds: led-controller@10001900 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-leds";
+			reg = <0x10001900 0x24>;
+			status = "disabled";
+		};
 	};
 };
diff --git a/target/linux/brcm63xx/dts/bcm6368.dtsi b/target/linux/brcm63xx/dts/bcm6368.dtsi
index a49f24a..3efe76c 100644
--- a/target/linux/brcm63xx/dts/bcm6368.dtsi
+++ b/target/linux/brcm63xx/dts/bcm6368.dtsi
@@ -262,6 +262,14 @@
 			reg = <0x100000b8 0x4>;
 		};
 
+		leds: led-controller@100000d0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6358-leds";
+			reg = <0x100000d0 0x8>;
+			status = "disabled";
+		};
+
 		lsspi: spi@10000800 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/target/linux/brcm63xx/dts/ct-6373.dts b/target/linux/brcm63xx/dts/ct-6373.dts
index 8e6eb45..8ddcacb 100644
--- a/target/linux/brcm63xx/dts/ct-6373.dts
+++ b/target/linux/brcm63xx/dts/ct-6373.dts
@@ -12,26 +12,6 @@
 		bootargs = "root=/dev/mtdblock2 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200";
 	};
 
-	spi-gpio {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		compatible = "spi-gpio";
-
-		gpio-mosi = <&pinctrl 7 0>;
-		gpio-sck = <&pinctrl 6 0>;
-		num-chipselects = <0>;
-
-		hc595: gpio-spi-controller@0 {
-			compatible = "fairchild,74hc595";
-			reg = <0>;
-			registers-number = <1>;
-			spi-max-frequency = <100000>;
-
-			gpio-controller;
-			#gpio-cells = <2>;
-		};
-	};
-
 	gpio-keys-polled {
 		compatible = "gpio-keys-polled";
 		#address-cells = <1>;
@@ -62,22 +42,37 @@
 			label = "CT6373-1:green:wlan";
 			gpios = <&pinctrl 9 1>;
 		};
-		dsl_green {
-			label = "CT6373-1:green:adsl";
-			gpios = <&hc595 0 1>;
-		};
-		line_green {
-			label = "CT6373-1:green:line";
-			gpios = <&hc595 1 1>;
-		};
-		fxs1_green {
-			label = "CT6373-1:green:fxs1";
-			gpios = <&hc595 2 1>;
-		};
-		fxs2_green {
-			label = "CT6373-1:green:fxs2";
-			gpios = <&hc595 3 1>;
-		};
+	};
+};
+
+&leds {
+	status = "ok";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_serial_led>;
+
+	led@0 {
+		reg = <0>;
+		active-low;
+		label = "CT6373-1:green:adsl";
+	};
+
+	led@1 {
+		reg = <1>;
+		active-low;
+		label = "CT6373-1:green:line";
+	};
+
+	led@2 {
+		reg = <2>;
+		active-low;
+		label = "CT6373-1:green:fxs1";
+	};
+
+	led@3 {
+		reg = <3>;
+		active-low;
+		label = "CT6373-1:green:fxs2";
 	};
 };
 
diff --git a/target/linux/brcm63xx/dts/homehub2a.dts b/target/linux/brcm63xx/dts/homehub2a.dts
index 0d51c87..6192687 100644
--- a/target/linux/brcm63xx/dts/homehub2a.dts
+++ b/target/linux/brcm63xx/dts/homehub2a.dts
@@ -12,27 +12,6 @@
 		bootargs = "root=/dev/mtdblock2 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200";
 	};
 
-	spi-gpio {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		compatible = "spi-gpio";
-
-		gpio-mosi = <&pinctrl 7 0>;
-		gpio-sck = <&pinctrl 6 0>;
-		cs-gpios = <&pinctrl 5 0>;
-		num-chipselects = <1>;
-
-		hc595: gpio-spi-controller@0 {
-			compatible = "fairchild,74hc595";
-			reg = <0>;
-			registers-number = <2>;
-			spi-max-frequency = <100000>;
-
-			gpio-controller;
-			#gpio-cells = <2>;
-		};
-	};
-
 	gpio-keys-polled {
 		compatible = "gpio-keys-polled";
 		#address-cells = <1>;
@@ -56,71 +35,103 @@
 			linux,code = <KEY_WPS_BUTTON>;
 		};
 	};
+};
 
-	gpio-leds {
-		compatible = "gpio-leds";
+&leds {
+	status = "ok";
 
-		power_red {
-			label = "HOMEHUB2A:red:power";
-			gpios = <&hc595 0 1>;
-		};
-		power_green {
-			label = "HOMEHUB2A:green:power";
-			gpios = <&hc595 1 1>;
-			default-state = "on";
-		};
-		power_blue {
-			label = "HOMEHUB2A:blue:power";
-			gpios = <&hc595 2 1>;
-		};
-		broadband_red {
-			label = "HOMEHUB2A:red:broadband";
-			gpios = <&hc595 3 1>;
-		};
-		broadband_green {
-			label = "HOMEHUB2A:green:broadband";
-			gpios = <&hc595 4 1>;
-		};
-		broadband_blue {
-			label = "HOMEHUB2A:blue:broadband";
-			gpios = <&hc595 5 1>;
-		};
-		wireless_red {
-			label = "HOMEHUB2A:red:wireless";
-			gpios = <&hc595 6 1>;
-		};
-		wireless_green {
-			label = "HOMEHUB2A:green:wireless";
-			gpios = <&hc595 7 1>;
-		};
-		wireless_blue {
-			label = "HOMEHUB2A:blue:wireless";
-			gpios = <&hc595 8 1>;
-		};
-		phone_red {
-			label = "HOMEHUB2A:red:phone";
-			gpios = <&hc595 9 1>;
-		};
-		phone_green {
-			label = "HOMEHUB2A:green:phone";
-			gpios = <&hc595 10 1>;
-		};
-		phone_blue {
-			label = "HOMEHUB2A:blue:phone";
-			gpios = <&hc595 11 1>;
-		};
-		upgrading_red {
-			label = "HOMEHUB2A:red:upgrading";
-			gpios = <&hc595 12 1>;
-		};
-		upgrading_green {
-			label = "HOMEHUB2A:green:upgrading";
-			gpios = <&hc595 13 1>;
-		};
-		upgrading_blue {
-			label = "HOMEHUB2A:blue:upgrading";
-			gpios = <&hc595 14 1>;
-		};
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_serial_led>;
+
+	led@0 {
+		reg = <0>;
+		active-low;
+		label = "HOMEHUB2A:red:power";
+	};
+
+	led@1 {
+		reg = <0>;
+		active-low;
+		label = "HOMEHUB2A:green:power";
+		default-state = "on";
+	};
+
+	led@2 {
+		reg = <2>;
+		active-low;
+		label = "HOMEHUB2A:blue:power";
+	};
+
+	led@3 {
+		reg = <3>;
+		active-low;
+		label = "HOMEHUB2A:red:broadband";
+	};
+
+	led@4 {
+		reg = <4>;
+		active-low;
+		label = "HOMEHUB2A:green:broadband";
+	};
+
+	led@5 {
+		reg = <5>;
+		active-low;
+		label = "HOMEHUB2A:blue:broadband";
+	};
+
+	led@6 {
+		reg = <6>;
+		active-low;
+		label = "HOMEHUB2A:red:wireless";
+	};
+
+	led@7 {
+		reg = <7>;
+		active-low;
+		label = "HOMEHUB2A:green:wireless";
+	};
+
+	led@8 {
+		reg = <8>;
+		active-low;
+		label = "HOMEHUB2A:blue:wireless";
+	};
+
+	led@9 {
+		reg = <9>;
+		active-low;
+		label = "HOMEHUB2A:red:phone";
+	};
+
+	led@10 {
+		reg = <10>;
+		active-low;
+		label = "HOMEHUB2A:green:phone";
+	};
+
+	led@11 {
+		reg = <11>;
+		active-low;
+		label = "HOMEHUB2A:blue:phone";
+	};
+
+	led@12 {
+		reg = <12>;
+		active-low;
+		label = "HOMEHUB2A:red:upgrading";
+	};
+
+	led@13 {
+		reg = <13>;
+		active-low;
+		label = "HOMEHUB2A:green:upgrading";
+	};
+
+	led@14 {
+		reg = <14>;
+		active-low;
+		label = "HOMEHUB2A:blue:upgrading";
 	};
 };
 
diff --git a/target/linux/brcm63xx/dts/nb4-fxc-r1.dts b/target/linux/brcm63xx/dts/nb4-fxc-r1.dts
index 4960afb..e11ec46 100644
--- a/target/linux/brcm63xx/dts/nb4-fxc-r1.dts
+++ b/target/linux/brcm63xx/dts/nb4-fxc-r1.dts
@@ -12,26 +12,6 @@
 		bootargs = "root=/dev/mtdblock2 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200";
 	};
 
-	spi-gpio {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		compatible = "spi-gpio";
-
-		gpio-mosi = <&pinctrl 7 0>;
-		gpio-sck = <&pinctrl 6 0>;
-		num-chipselects = <0>;
-
-		hc595: gpio-spi-controller@0 {
-			compatible = "fairchild,74hc595";
-			reg = <0>;
-			registers-number = <1>;
-			spi-max-frequency = <100000>;
-
-			gpio-controller;
-			#gpio-cells = <2>;
-		};
-	};
-
 	gpio-keys-polled {
 		compatible = "gpio-keys-polled";
 		#address-cells = <1>;
@@ -84,22 +64,37 @@
 			label = "NB4-FXC-r1:green:service";
 			gpios = <&pinctrl 30 0>;
 		};
-		alarm_white {
-			label = "NB4-FXC-r1:white:alarm";
-			gpios = <&hc595 0 1>;
-		};
-		tv_white {
-			label = "NB4-FXC-r1:white:tv";
-			gpios = <&hc595 2 1>;
-		};
-		tel_white {
-			label = "NB4-FXC-r1:white:tel";
-			gpios = <&hc595 3 1>;
-		};
-		adsl_white {
-			label = "NB4-FXC-r0:white:adsl";
-			gpios = <&hc595 4 1>;
-		};
+	};
+};
+
+&leds {
+	status = "ok";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_serial_led>;
+
+	led@0 {
+		reg = <0>;
+		active-low;
+		label = "NB4-FXC-r1:white:alarm";
+	};
+
+	led@2 {
+		reg = <2>;
+		active-low;
+		label = "NB4-FXC-r1:white:tv";
+	};
+
+	led@3 {
+		reg = <3>;
+		active-low;
+		label = "NB4-FXC-r1:white:tel";
+	};
+
+	led@4 {
+		reg = <4>;
+		active-low;
+		label = "NB4-FXC-r1:white:adsl";
 	};
 };
 
diff --git a/target/linux/brcm63xx/dts/nb4-ser-r0.dts b/target/linux/brcm63xx/dts/nb4-ser-r0.dts
index 128a16a..8a33c66 100644
--- a/target/linux/brcm63xx/dts/nb4-ser-r0.dts
+++ b/target/linux/brcm63xx/dts/nb4-ser-r0.dts
@@ -12,26 +12,6 @@
 		bootargs = "root=/dev/mtdblock2 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200";
 	};
 
-	spi-gpio {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		compatible = "spi-gpio";
-
-		gpio-mosi = <&pinctrl 7 0>;
-		gpio-sck = <&pinctrl 6 0>;
-		num-chipselects = <0>;
-
-		hc595: gpio-spi-controller@0 {
-			compatible = "fairchild,74hc595";
-			reg = <0>;
-			registers-number = <1>;
-			spi-max-frequency = <100000>;
-
-			gpio-controller;
-			#gpio-cells = <2>;
-		};
-	};
-
 	gpio-keys-polled {
 		compatible = "gpio-keys-polled";
 		#address-cells = <1>;
@@ -84,22 +64,37 @@
 			label = "NB4-SER-r0:green:service";
 			gpios = <&pinctrl 30 1>;
 		};
-		alarm_white {
-			label = "NB4-SER-r0:white:alarm";
-			gpios = <&hc595 0 1>;
-		};
-		tv_white {
-			label = "NB4-SER-r0:white:tv";
-			gpios = <&hc595 2 1>;
-		};
-		tel_white {
-			label = "NB4-SER-r0:white:tel";
-			gpios = <&hc595 3 1>;
-		};
-		adsl_white {
-			label = "NB4-SER-r0:white:adsl";
-			gpios = <&hc595 4 1>;
-		};
+	};
+};
+
+&leds {
+	status = "ok";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_serial_led>;
+
+	led@0 {
+		reg = <0>;
+		active-low;
+		label = "NB4-SER-r0:white:alarm";
+	};
+
+	led@2 {
+		reg = <2>;
+		active-low;
+		label = "NB4-SER-r0:white:tv";
+	};
+
+	led@3 {
+		reg = <3>;
+		active-low;
+		label = "NB4-SER-r0:white:tel";
+	};
+
+	led@4 {
+		reg = <4>;
+		active-low;
+		label = "NB4-SER-r0:white:adsl";
 	};
 };