ramips: add alsa support

add the SDK alsa driver. this has only been tested on mt7628/88 and wm8960.
mt7620 is only compile tested.

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 47205

target/linux/ramips/dts/mt7628an.dtsi

@@ -105,6 +105,39 @@
 			};
 		};
 
+		i2c@900 {
+			compatible = "mediatek,mt7628-i2c";
+			reg = <0x900 0x100>;
+
+			resets = <&rstctrl 16>;
+			reset-names = "i2c";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "disabled";
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&i2c_pins>;
+		};
+
+		i2s@a00 {
+			compatible = "ralink,mt7620a-i2s";
+			reg = <0xa00 0x100>;
+
+			resets = <&rstctrl 17>;
+			reset-names = "i2s";
+
+			interrupt-parent = <&intc>;
+			interrupts = <10>;
+
+			dmas = <&gdma 2>,
+				<&gdma 3>;
+			dma-names = "tx", "rx";
+
+			status = "disabled";
+		};
+
 		spi@b00 {
 			compatible = "ralink,mt7621-spi";
 			reg = <0xb00 0x100>;
@@ -178,6 +211,49 @@
 
 			status = "disabled";
 		};
+
+		pwm@5000 {
+			compatible = "mediatek,mt7628-pwm";
+			reg = <0x5000 0x1000>;
+
+			resets = <&rstctrl 31>;
+			reset-names = "pwm";
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&pwm0_pins>, <&pwm1_pins>;
+
+			status = "disabled";
+		};
+
+		pcm@2000 {
+			compatible = "ralink,mt7620a-pcm";
+			reg = <0x2000 0x800>;
+
+			resets = <&rstctrl 11>;
+			reset-names = "pcm";
+
+			interrupt-parent = <&intc>;
+			interrupts = <4>;
+
+			status = "disabled";
+		};
+
+		gdma: gdma@2800 {
+			compatible = "ralink,mt7620a-gdma", "ralink,rt2880-gdma";
+			reg = <0x2800 0x800>;
+
+			resets = <&rstctrl 14>;
+			reset-names = "dma";
+
+			interrupt-parent = <&intc>;
+			interrupts = <7>;
+
+			#dma-cells = <1>;
+			#dma-channels = <16>;
+			#dma-requests = <16>;
+
+			status = "disabled";
+		};
 	};
 
 	pinctrl {
@@ -195,6 +271,20 @@
 			};
 		};
 
+		spi_cs1_pins: spi_cs1 {
+			spi_cs1 {
+				ralink,group = "spi cs1";
+				ralink,function = "spi cs1";
+			};
+		};
+
+		i2c_pins: i2c {
+			i2c {
+				ralink,group = "i2c";
+				ralink,function = "i2c";
+			};
+		};
+
 		uart0_pins: uartlite {
 			uartlite {
 				ralink,group = "uart0";
@@ -222,6 +312,27 @@
 				ralink,function = "sdxc";
 			};
 		};
+
+		pwm0_pins: pwm0 {
+			pwm0 {
+				ralink,group = "pwm0";
+				ralink,function = "pwm0";
+			};
+		};
+
+		pwm1_pins: pwm1 {
+			pwm1 {
+				ralink,group = "pwm1";
+				ralink,function = "pwm1";
+			};
+		};
+
+		pcm_i2s_pins: i2s {
+			i2s {
+				ralink,group = "i2s";
+				ralink,function = "pcm";
+			};
+		};
 	};
 
 	rstctrl: rstctrl {

target/linux/ramips/modules.mk

@@ -56,7 +56,7 @@ $(eval $(call KernelPackage,i2c-mt7621))
 
 define KernelPackage/sound-mt7620
   TITLE:=MT7620 PCM/I2S Alsa Driver
-  DEPENDS:=@TARGET_ramips_mt7620 +kmod-sound-soc-core +kmod-regmap
+  DEPENDS:=@TARGET_ramips_mt7620 +kmod-sound-soc-core +kmod-regmap @BROKEN
   KCONFIG:= \
 	CONFIG_SND_MT7620_SOC_I2S \
 	CONFIG_SND_MT7620_SOC_WM8960
@@ -73,3 +73,30 @@ define KernelPackage/sound-mt7620/description
 endef
 
 $(eval $(call KernelPackage,sound-mt7620))
+
+
+define KernelPackage/sound-mtk
+  TITLE:=Mediatek I2S Alsa Driver
+  DEPENDS:= +kmod-sound-soc-core +kmod-regmap +kmod-i2c-ralink @(TARGET_ramips_mt7628||TARGET_ramips_mt7688||TARGET_ramips_mt7620)
+  KCONFIG:= \
+	CONFIG_SND_MT76XX_SOC \
+	CONFIG_SND_MT76XX_I2S \
+	CONFIG_SND_MT76XX_PCM \
+	CONFIG_SND_SOC_WM8960
+  FILES:= \
+	$(LINUX_DIR)/sound/soc/mtk/ralink_gdma.ko \
+	$(LINUX_DIR)/sound/soc/mtk/snd-soc-mt76xx-i2s-ctl.ko \
+	$(LINUX_DIR)/sound/soc/mtk/snd-soc-mt76xx-i2s.ko \
+	$(LINUX_DIR)/sound/soc/mtk/snd-soc-mt76xx-pcm.ko \
+	$(LINUX_DIR)/sound/soc/mtk/snd-soc-mt76xx-machine.ko \
+	$(LINUX_DIR)/sound/soc/mtk/i2c_wm8960.ko \
+	$(LINUX_DIR)/sound/soc/codecs/snd-soc-wm8960.ko
+  AUTOLOAD:=$(call AutoLoad,90,ralink_gdma snd-soc-wm8960 i2c_wm8960 snd-soc-mt76xx-i2s-ctl snd-soc-mt76xx-i2s snd-soc-mt76xx-pcm snd-soc-mt76xx-machine)
+  $(call AddDepends/sound)
+endef
+
+define KernelPackage/sound-mtk/description
+ Alsa modules for ralink i2s controller.
+endef
+
+$(eval $(call KernelPackage,sound-mtk))

target/linux/ramips/mt7620/config-3.18

@@ -166,6 +166,8 @@ CONFIG_SOC_MT7620=y
 # CONFIG_SOC_RT288X is not set
 # CONFIG_SOC_RT305X is not set
 # CONFIG_SOC_RT3883 is not set
+CONFIG_SND_MT76XX_SOC_MT7620=y
+# CONFIG_SND_MT76XX_SOC_MT7628 is not set
 CONFIG_SPI=y
 CONFIG_SPI_MASTER=y
 # CONFIG_SPI_MT7621 is not set

target/linux/ramips/mt7628/config-3.18

@@ -164,6 +164,8 @@ CONFIG_SOC_MT7620=y
 # CONFIG_SOC_RT288X is not set
 # CONFIG_SOC_RT305X is not set
 # CONFIG_SOC_RT3883 is not set
+# CONFIG_SND_MT76XX_SOC_MT7620 is not set
+CONFIG_SND_MT76XX_SOC_MT7628=y
 CONFIG_SPI=y
 CONFIG_SPI_MASTER=y
 CONFIG_SPI_MT7621=y