MIPS: qi_lb60: Migrate to devicetree

Move all the platform data to devicetree.

The only bit dropped is the PWM beeper, which requires the PWM driver
to be updated. I figured it's okay to remove it here since it's really
a non-critical device, and it'll be re-introduced soon enough.

The other change is the CS line of the SPI is now set as active low. The
SPI core would have forced "active low" anyway, unless the 'spi-cs-high'
property is set.

In the process of moving to devicetree, we also switched to new drivers:
- We use the simple-audio-card and simple-amplifier drivers instead of
  the custom ASoC code;
- We use the new Ingenic DRM driver coupled with the GiantPlus GPM940B0
  DRM panel driver instead of the old framebuffer driver;
- We use the new jz4780-dma driver instead of the old jz4740-dma one;
- We use the ingenic-nand and jz4740-ecc drivers instead of the old
  jz4740-nand driver;
- We use ingenic-battery instead of jz4740-battery;
- We use iio-hwmon instead of jz4740-hwmon;
- We use ingenic-iio instead of the old jz4740-adc MFD driver.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
[paul.burton@mips.com:
    Drop the unused & undocumented ili8960 spi@0 node.]
Signed-off-by: Paul Burton <paul.burton@mips.com>

arch/mips/boot/dts/ingenic/qi_lb60.dts

@@ -4,6 +4,16 @@
 #include "jz4740.dtsi"
 #include <dt-bindings/gpio/gpio.h>
 
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/iio/adc/ingenic,adc.h>
+#include <dt-bindings/input/input.h>
+
+#define KEY_QI_QI	KEY_F13
+#define KEY_QI_UPRED	KEY_RIGHTALT
+#define KEY_QI_VOLUP	KEY_VOLUMEUP
+#define KEY_QI_VOLDOWN	KEY_VOLUMEDOWN
+#define KEY_QI_FN	KEY_LEFTCTRL
+
 / {
 	compatible = "qi,lb60", "ingenic,jz4740";
 
@@ -11,7 +21,16 @@ chosen {
 		stdout-path = &uart0;
 	};
 
-	mmc_power: fixedregulator {
+	vcc: regulator@0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc";
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	mmc_power: regulator@1 {
 		compatible = "regulator-fixed";
 		regulator-name = "mmc_vcc";
 		gpio = <&gpd 2 0>;
@@ -19,6 +38,196 @@ mmc_power: fixedregulator {
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 	};
+
+	amp_supply: regulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "amp_supply";
+		gpio = <&gpd 4 0>;
+		enable-active-high;
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	amp: analog-amplifier {
+		compatible = "simple-audio-amplifier";
+		enable-gpios = <&gpb 29 GPIO_ACTIVE_HIGH>;
+		VCC-supply = <&amp_supply>;
+	};
+
+	sound {
+		compatible = "simple-audio-card";
+
+		simple-audio-card,name = "QI LB60";
+		simple-audio-card,format = "i2s";
+
+		simple-audio-card,widgets =
+			"Speaker", "Speaker",
+			"Microphone", "Mic";
+		simple-audio-card,routing =
+			"MIC", "Mic",
+			"Speaker", "OUTL",
+			"Speaker", "OUTR",
+			"INL", "LOUT",
+			"INL", "ROUT";
+
+		simple-audio-card,aux-devs = <&amp>;
+
+		simple-audio-card,bitclock-master = <&dai_codec>;
+		simple-audio-card,frame-master = <&dai_codec>;
+
+		dai_cpu: simple-audio-card,cpu {
+			sound-dai = <&aic>;
+		};
+
+		dai_codec: simple-audio-card,codec {
+			sound-dai = <&codec>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		key {
+			label = "Power";
+			wakeup-source;
+			linux,code = <KEY_POWER>;
+			gpios = <&gpd 29 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keyboard {
+		compatible = "gpio-matrix-keypad";
+
+		col-scan-delay-us = <10>;
+		debounce-delay-ms = <10>;
+		wakeup-source;
+
+		row-gpios = <&gpd 18 0 &gpd 19 0 &gpd 20 0 &gpd 21 0
+			     &gpd 22 0 &gpd 23 0 &gpd 24 0 &gpd 26 0>;
+		col-gpios = <&gpc 10 0 &gpc 11 0 &gpc 12 0 &gpc 13 0
+			     &gpc 14 0 &gpc 15 0 &gpc 16 0 &gpc 17 0>;
+		gpio-activelow;
+
+		linux,keymap = <
+			MATRIX_KEY(0, 0, KEY_F1)	/* S2 */
+			MATRIX_KEY(0, 1, KEY_F2)	/* S3 */
+			MATRIX_KEY(0, 2, KEY_F3)	/* S4 */
+			MATRIX_KEY(0, 3, KEY_F4)	/* S5 */
+			MATRIX_KEY(0, 4, KEY_F5)	/* S6 */
+			MATRIX_KEY(0, 5, KEY_F6)	/* S7 */
+			MATRIX_KEY(0, 6, KEY_F7)	/* S8 */
+
+			MATRIX_KEY(1, 0, KEY_Q)	/* S10 */
+			MATRIX_KEY(1, 1, KEY_W)	/* S11 */
+			MATRIX_KEY(1, 2, KEY_E)	/* S12 */
+			MATRIX_KEY(1, 3, KEY_R)	/* S13 */
+			MATRIX_KEY(1, 4, KEY_T)	/* S14 */
+			MATRIX_KEY(1, 5, KEY_Y)	/* S15 */
+			MATRIX_KEY(1, 6, KEY_U)	/* S16 */
+			MATRIX_KEY(1, 7, KEY_I)	/* S17 */
+			MATRIX_KEY(2, 0, KEY_A)	/* S18 */
+			MATRIX_KEY(2, 1, KEY_S)	/* S19 */
+			MATRIX_KEY(2, 2, KEY_D)	/* S20 */
+			MATRIX_KEY(2, 3, KEY_F)	/* S21 */
+			MATRIX_KEY(2, 4, KEY_G)	/* S22 */
+			MATRIX_KEY(2, 5, KEY_H)	/* S23 */
+			MATRIX_KEY(2, 6, KEY_J)	/* S24 */
+			MATRIX_KEY(2, 7, KEY_K)	/* S25 */
+			MATRIX_KEY(3, 0, KEY_ESC)	/* S26 */
+			MATRIX_KEY(3, 1, KEY_Z)	/* S27 */
+			MATRIX_KEY(3, 2, KEY_X)	/* S28 */
+			MATRIX_KEY(3, 3, KEY_C)	/* S29 */
+			MATRIX_KEY(3, 4, KEY_V)	/* S30 */
+			MATRIX_KEY(3, 5, KEY_B)	/* S31 */
+			MATRIX_KEY(3, 6, KEY_N)	/* S32 */
+			MATRIX_KEY(3, 7, KEY_M)	/* S33 */
+			MATRIX_KEY(4, 0, KEY_TAB)	/* S34 */
+			MATRIX_KEY(4, 1, KEY_CAPSLOCK)	/* S35 */
+			MATRIX_KEY(4, 2, KEY_BACKSLASH)	/* S36 */
+			MATRIX_KEY(4, 3, KEY_APOSTROPHE)	/* S37 */
+			MATRIX_KEY(4, 4, KEY_COMMA)	/* S38 */
+			MATRIX_KEY(4, 5, KEY_DOT)	/* S39 */
+			MATRIX_KEY(4, 6, KEY_SLASH)	/* S40 */
+			MATRIX_KEY(4, 7, KEY_UP)	/* S41 */
+			MATRIX_KEY(5, 0, KEY_O)	/* S42 */
+			MATRIX_KEY(5, 1, KEY_L)	/* S43 */
+			MATRIX_KEY(5, 2, KEY_EQUAL)	/* S44 */
+			MATRIX_KEY(5, 3, KEY_QI_UPRED)	/* S45 */
+			MATRIX_KEY(5, 4, KEY_SPACE)	/* S46 */
+			MATRIX_KEY(5, 5, KEY_QI_QI)	/* S47 */
+			MATRIX_KEY(5, 6, KEY_RIGHTCTRL)	/* S48 */
+			MATRIX_KEY(5, 7, KEY_LEFT)	/* S49 */
+			MATRIX_KEY(6, 0, KEY_F8)	/* S50 */
+			MATRIX_KEY(6, 1, KEY_P)	/* S51 */
+			MATRIX_KEY(6, 2, KEY_BACKSPACE)/* S52 */
+			MATRIX_KEY(6, 3, KEY_ENTER)	/* S53 */
+			MATRIX_KEY(6, 4, KEY_QI_VOLUP)	/* S54 */
+			MATRIX_KEY(6, 5, KEY_QI_VOLDOWN)	/* S55 */
+			MATRIX_KEY(6, 6, KEY_DOWN)	/* S56 */
+			MATRIX_KEY(6, 7, KEY_RIGHT)	/* S57 */
+
+			MATRIX_KEY(7, 0, KEY_LEFTSHIFT)	/* S58 */
+			MATRIX_KEY(7, 1, KEY_LEFTALT) /* S59 */
+			MATRIX_KEY(7, 2, KEY_QI_FN)	/* S60 */
+			>;
+	};
+
+	spi {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		sck-gpios = <&gpc 23 GPIO_ACTIVE_HIGH>;
+		mosi-gpios = <&gpc 22 GPIO_ACTIVE_HIGH>;
+		cs-gpios = <&gpc 21 GPIO_ACTIVE_LOW>;
+		num-chipselects = <1>;
+	};
+
+	usb_charger: charger {
+		compatible = "gpio-charger";
+		charger-type = "usb-sdp";
+		gpios = <&gpd 28 GPIO_ACTIVE_LOW>;
+		status-gpios = <&gpc 27 GPIO_ACTIVE_LOW>;
+	};
+
+	simple_battery: battery {
+		compatible = "simple-battery";
+		voltage-min-design-microvolt = <3600000>;
+		voltage-max-design-microvolt = <4200000>;
+	};
+
+	pmu {
+		compatible = "ingenic,jz4740-battery";
+		io-channels = <&adc INGENIC_ADC_BATTERY>;
+		io-channel-names = "battery";
+		power-supplies = <&usb_charger>;
+		monitored-battery = <&simple_battery>;
+	};
+
+	hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&adc INGENIC_ADC_AUX>;
+	};
+
+	panel: panel {
+		compatible = "giantplus,gpm940b0";
+
+		power-supply = <&vcc>;
+
+		port {
+			panel_input: endpoint {
+				remote-endpoint = <&panel_output>;
+			};
+		};
+	};
+
+	usb_phy: usb-phy {
+		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
+
+		vcc-supply = <&vcc>;
+	};
 };
 
 &ext {
@@ -34,7 +243,84 @@ &uart0 {
 	pinctrl-0 = <&pins_uart0>;
 };
 
+&uart1 {
+	status = "disabled";
+};
+
+&nemc {
+	nandc: nand-controller@1 {
+		compatible = "ingenic,jz4740-nand";
+		reg = <1 0 0x4000000>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ingenic,bch-controller = <&ecc>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&pins_nemc>;
+
+		rb-gpios = <&gpc 30 GPIO_ACTIVE_LOW>;
+
+		nand@1 {
+			reg = <1>;
+
+			nand-ecc-step-size = <512>;
+			nand-ecc-strength = <4>;
+			nand-ecc-mode = "hw";
+			nand-is-boot-medium;
+			nand-on-flash-bbt;
+
+			partitions {
+				compatible = "fixed-partitions";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				partition@0 {
+					label = "boot";
+					reg = <0x0 0x400000>;
+				};
+
+				partition@400000 {
+					label = "kernel";
+					reg = <0x400000 0x400000>;
+				};
+
+				partition@800000 {
+					label = "rootfs";
+					reg = <0x800000 0x0>;
+				};
+			};
+		};
+	};
+};
+
+&lcd {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pins_lcd>;
+
+	port {
+		panel_output: endpoint {
+			remote-endpoint = <&panel_input>;
+		};
+	};
+};
+
+&udc {
+	phys = <&usb_phy>;
+};
+
 &pinctrl {
+	pins_lcd: lcd {
+		function = "lcd";
+		groups = "lcd-8bit";
+	};
+
+	pins_nemc: nemc {
+		function = "nand";
+		groups = "nand-cs1";
+	};
+
 	pins_uart0: uart0 {
 		function = "uart0";
 		groups = "uart0-data";

arch/mips/jz4740/Makefile

@@ -10,10 +10,6 @@ obj-y += prom.o time.o reset.o setup.o \
 
 CFLAGS_setup.o = -I$(src)/../../../scripts/dtc/libfdt
 
-# board specific support
-
-obj-$(CONFIG_JZ4740_QI_LB60)	+= board-qi_lb60.o
-
 # PM support
 
 obj-$(CONFIG_PM) += pm.o