ARM:mstar: SAR adc driver

linux-chenxing · Jul 11, 2021 · fb1c5e9 · fb1c5e9
1 parent 92bc4e2
commit fb1c5e9
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diff --git a/arch/arm/boot/dts/mstar-infinity.dtsi b/arch/arm/boot/dts/mstar-infinity.dtsi
@@ -53,3 +53,7 @@
 		      <&pinctrl 26 68 6>;
 	status = "okay";
 };
+
+&sar {
+	compatible = "mstar,msc313e-sar";
+};
diff --git a/arch/arm/boot/dts/mstar-mercury5-ssc8336.dtsi b/arch/arm/boot/dts/mstar-mercury5-ssc8336.dtsi
@@ -42,3 +42,7 @@
 			      /*<&intc_fiq 23 IRQ_TYPE_LEVEL_HIGH>;*/
 	status = "okay";
 };
+
+&sar {
+	compatible = "mstar,ssc8336-sar";
+};
diff --git a/arch/arm/boot/dts/mstar-v7.dtsi b/arch/arm/boot/dts/mstar-v7.dtsi
@@ -307,6 +307,46 @@
 				status = "disabled";
 			};
 
+			sar: sar@2800 {
+				reg = <0x2800 0x200>;
+				interrupts-extended = <&intc_irq GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>,
+						      <&wakeintc 1 IRQ_TYPE_LEVEL_HIGH>,
+						      <&wakeintc 6 IRQ_TYPE_LEVEL_HIGH>,
+						      <&intc_fiq GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>,
+						      <&intc_fiq GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>,
+						      <&intc_fiq GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
+						      <&intc_fiq GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-names = "sar",
+						  "wakeup",
+						  "wakeup_gpio",
+						  "sar_gpio0",
+						  "sar_gpio1",
+						  "sar_gpio2",
+						  "sar_gpio3";
+				clock-names = "sar_clk";
+				clocks = <&pm_muxes MSC313_PM_MUXES_SAR>;
+				#gpio-cells = <2>;
+				mstar,pmsleep = <&pmsleep>;
+				wakeup-source;
+				status = "disabled";
+				sar0_gpio0_pins: sar0_gpio0 {
+					function = "sar0";
+					groups = "sar_gpio0";
+				};
+				sar1_gpio1_pins: sar1_gpio1 {
+					function = "sar1";
+					groups = "sar_gpio1";
+				};
+				sar2_gpio2_pins: sar2_gpio2 {
+					function = "sar2";
+					groups = "sar_gpio2";
+				};
+				sar3_gpio3_pins: sar3_gpio3 {
+					function = "sar3";
+					groups = "sar_gpio3";
+				};
+			};
+
 			wdt: wdt@6000 {
 				compatible = "mstar,msc313e-wdt";
 				reg = <0x6000 0x1f>;

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
@@ -1268,4 +1268,21 @@ config XILINX_XADC
 	  The driver can also be build as a module. If so, the module will be called
 	  xilinx-xadc.
 
+config MSC313E_SAR
+	tristate "MStar MSC313E SAR driver"
+	depends on ARCH_MSTARV7 || COMPILE_TEST
+	depends on HAS_IOMEM
+	default ARCH_MSTARV7
+	select REGMAP_MMIO
+        select GENERIC_PINCTRL_GROUPS
+        select GENERIC_PINMUX_FUNCTIONS
+        select GENERIC_PINCONF
+        select GPIOLIB_IRQCHIP
+	select IRQ_DOMAIN_HIERARCHY
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	imply SENSORS_IIO_HWMON
+	help
+	  Say yes here to have support for the MSC313E SAR.
+
 endmenu
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
@@ -114,3 +114,4 @@ obj-$(CONFIG_VIPERBOARD_ADC) += viperboard_adc.o
 xilinx-xadc-y := xilinx-xadc-core.o xilinx-xadc-events.o
 obj-$(CONFIG_XILINX_XADC) += xilinx-xadc.o
 obj-$(CONFIG_SD_ADC_MODULATOR) += sd_adc_modulator.o
+obj-$(CONFIG_MSC313E_SAR) += msc313e_sar.o