fwk: Add host command for privacy switches

Signed-off-by: Daniel Schaefer <dhs@frame.work>

Author: JohnAZoidberg

zephyr/program/lotus/azalea/gpio.dtsi

@@ -59,7 +59,7 @@
 		ec_smb_da7 {
 			gpios = <&gpiob 2 GPIO_INPUT>;
 		};
-		mic_sw {
+		gpio_mic_sw: mic_sw {
 			gpios = <&gpioc 1 GPIO_INPUT>;
 		};
 		gpio_on_off_btn_l: on_off_btn_l {
@@ -157,7 +157,7 @@
 		gpio_apu_ec_int2_l: apu_ec_int2_l {
 			gpios = <&gpio7 4 GPIO_ODR_HIGH>;	/* EC notify host HID interrupt 2*/
 		};
-		cam_sw {
+		gpio_cam_sw: cam_sw {
 			gpios = <&gpio9 3 GPIO_INPUT>;
 		};
 		gpio_spok: pwr_3v5v_pg {

zephyr/program/lotus/include/board_host_command.h

@@ -240,6 +240,16 @@ struct ec_params_standalone_mode {
 	uint8_t enable;
 } __ec_align1;
 
+/*****************************************************************************/
+/*
+ * This command returns the current state of the camera and microphone privacy switches
+ */
+#define EC_CMD_PRIVACY_SWITCHES_CHECK_MODE 0x3E14
+
+struct ec_response_privacy_switches_check {
+	uint8_t microphone;
+	uint8_t camera;
+} __ec_align1;
 
 /*****************************************************************************/
 /*

zephyr/program/lotus/lotus/gpio.dtsi

@@ -77,7 +77,7 @@
 		ec_smb_da7 {
 			gpios = <&gpiob 2 GPIO_INPUT>;
 		};
-		mic_sw {
+		gpio_mic_sw: mic_sw {
 			gpios = <&gpioc 1 GPIO_INPUT>;
 		};
 		gpu_b_gpio00_ec {
@@ -257,7 +257,7 @@
 		i2c_int_tp_2 {
 			gpios = <&gpio9 6 GPIO_INPUT>;		/* HUB board TP module */
 		};
-		cam_sw {
+		gpio_cam_sw: cam_sw {
 			gpios = <&gpio9 3 GPIO_INPUT>;
 		};
 		gpio_spok: spok {

zephyr/program/lotus/src/board_host_command.c

@@ -417,6 +417,27 @@ static enum ec_status host_command_uefi_app_btn_status(struct host_cmd_handler_a
 DECLARE_HOST_COMMAND(EC_CMD_UEFI_APP_BTN_STATUS, host_command_uefi_app_btn_status, EC_VER_MASK(0));
 #endif /* CONFIG_BOARD_LOTUS */
 
+static enum ec_status privacy_switches_check(struct host_cmd_handler_args *args)
+{
+	struct ec_response_privacy_switches_check *r = args->response;
+
+	/*
+	 * Camera is low when off, microphone is high when off
+	 * Return 0 when off/close and 1 when high/open
+	 */
+	r->microphone = !gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_mic_sw));
+	r->camera = gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_cam_sw));
+
+	CPRINTS("Microphone switch open: %d", r->microphone);
+	CPRINTS("Camera switch open: %d", r->camera);
+
+	args->response_size = sizeof(*r);
+
+	return EC_RES_SUCCESS;
+
+}
+DECLARE_HOST_COMMAND(EC_CMD_PRIVACY_SWITCHES_CHECK_MODE, privacy_switches_check, EC_VER_MASK(0));
+
 /*******************************************************************************/
 /*                       EC console command for Project                        */
 /*******************************************************************************/