tea5767_kernel_driver

This is a Linux I2C Platform Device Driver for cheap TEA5767 Radio Tuner modules you can find on Amazon: https://www.amazon.com/TEA5767-Stereo-FM-Radio-Telescopic/dp/B01J3UOUE4/ref=sr_1_4?keywords=tea5767&qid=1579200160&sr=8-4

This driver is not to be confused with Philips TEA5767 chip driver, which is already available at https://github.com/spotify/linux/blob/master/drivers/media/common/tuners/tea5767.c

Adding to Your System

Adding to Kernel Makefile

Add to your misc driver Makefile as such:

diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 16d1c85cfced..8d7fb682f0b9 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -59,3 +59,4 @@ obj-$(CONFIG_ASPEED_LPC_SNOOP)	+= aspeed-lpc-snoop.o
 obj-$(CONFIG_PCI_ENDPOINT_TEST)	+= pci_endpoint_test.o
 obj-$(CONFIG_OCXL)		        += ocxl/
 obj-$(CONFIG_MISC_RTSX)		+= cardreader/
+obj-y                                  += tea5767_fm_tuner.o

Adding to Devicetree

Add to your devicetree as such:

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index 18c0f9599d3a..b09fe6f19259 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -314,6 +314,14 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c1_pins>;
 	clock-frequency = <100000>;
+	status = "okay";
+
+	tea5767@60 {
+		compatible = "mozcelikors,tea5767";
+		reg = <0x60>;
+		minstation = <88000>;
+		maxstation = <108000>;
+	};
 };
 
 &i2c2 {

Communicating with the Driver

Load i2c_dev to be able to communicate using sysfs.

modprobe i2c_dev

Mute

echo "1" > /sys/class/i2c-dev/i2c-1/device/1-0060/tea5767/mute

Unmute

echo "0" > /sys/class/i2c-dev/i2c-1/device/1-0060/tea5767/mute

Check Mute Status

cat /sys/class/i2c-dev/i2c-1/device/1-0060/tea5767/mute

Get Current Station Frequency

cat /sys/class/i2c-dev/i2c-1/device/1-0060/tea5767/station

Get Available Stations

cat /sys/class/i2c-dev/i2c-1/device/1-0060/tea5767/stationlist

Tune into a Station (Frequency in kHZ)

echo 97200 > /sys/class/i2c-dev/i2c-1/device/1-0060/tea5767/station