drivers: modem: modem_cellular: fix HL7800 communication timeout

HL7800 may enter sleep, blocking init without proper config.

Signed-off-by: Zafer SEN <zafersn93@gmail.com>

Author: zafersn

drivers/modem/modem_cellular.c

@@ -154,6 +154,7 @@ struct modem_cellular_config {
 	const struct device *uart;
 	struct gpio_dt_spec power_gpio;
 	struct gpio_dt_spec reset_gpio;
+	struct gpio_dt_spec wake_gpio;
 	uint16_t power_pulse_duration_ms;
 	uint16_t reset_pulse_duration_ms;
 	uint16_t startup_time_ms;
@@ -599,6 +600,10 @@ static int modem_cellular_on_idle_state_enter(struct modem_cellular_data *data)
 	const struct modem_cellular_config *config =
 		(const struct modem_cellular_config *)data->dev->config;
 
+	if (modem_cellular_gpio_is_enabled(&config->wake_gpio)) {
+		gpio_pin_set_dt(&config->wake_gpio, 0);
+	}
+
 	if (modem_cellular_gpio_is_enabled(&config->reset_gpio)) {
 		gpio_pin_set_dt(&config->reset_gpio, 1);
 	}
@@ -662,6 +667,10 @@ static int modem_cellular_on_idle_state_leave(struct modem_cellular_data *data)
 		gpio_pin_set_dt(&config->reset_gpio, 0);
 	}
 
+	if (modem_cellular_gpio_is_enabled(&config->wake_gpio)) {
+		gpio_pin_set_dt(&config->wake_gpio, 1);
+	}
+
 	return 0;
 }
 
@@ -670,6 +679,10 @@ static int modem_cellular_on_reset_pulse_state_enter(struct modem_cellular_data
 	const struct modem_cellular_config *config =
 		(const struct modem_cellular_config *)data->dev->config;
 
+	if (modem_cellular_gpio_is_enabled(&config->wake_gpio)) {
+		gpio_pin_set_dt(&config->wake_gpio, 0);
+	}
+
 	gpio_pin_set_dt(&config->reset_gpio, 1);
 	modem_cellular_start_timer(data, K_MSEC(config->reset_pulse_duration_ms));
 	return 0;
@@ -698,6 +711,11 @@ static int modem_cellular_on_reset_pulse_state_leave(struct modem_cellular_data
 		(const struct modem_cellular_config *)data->dev->config;
 
 	gpio_pin_set_dt(&config->reset_gpio, 0);
+
+	if (modem_cellular_gpio_is_enabled(&config->wake_gpio)) {
+		gpio_pin_set_dt(&config->wake_gpio, 1);
+	}
+
 	modem_cellular_stop_timer(data);
 	return 0;
 }
@@ -1715,6 +1733,10 @@ static int modem_cellular_init(const struct device *dev)
 
 	k_sem_init(&data->suspended_sem, 0, 1);
 
+	if (modem_cellular_gpio_is_enabled(&config->wake_gpio)) {
+		gpio_pin_configure_dt(&config->wake_gpio, GPIO_OUTPUT_INACTIVE);
+	}
+
 	if (modem_cellular_gpio_is_enabled(&config->power_gpio)) {
 		gpio_pin_configure_dt(&config->power_gpio, GPIO_OUTPUT_INACTIVE);
 	}
@@ -2127,10 +2149,16 @@ MODEM_CHAT_SCRIPT_DEFINE(u_blox_lara_r6_periodic_chat_script,
 
 #if DT_HAS_COMPAT_STATUS_OKAY(swir_hl7800)
 MODEM_CHAT_SCRIPT_CMDS_DEFINE(swir_hl7800_init_chat_script_cmds,
-			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 100),
-			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 100),
-			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 100),
-			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 100),
+			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 1000),
+			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 1000),
+			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 1000),
+			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 1000),
+			      /* Turn off sleep mode */
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+KSLEEP=2", ok_match),
+			      /* Turn off PSM */
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CPSMS=0", ok_match),
+			      /* Turn off eDRX */
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CEDRXS=0", ok_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP("ATE0", ok_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CFUN=1", ok_match),
 			      MODEM_CHAT_SCRIPT_CMD_RESP_MULT("AT+CGACT=0", allow_match),
@@ -2388,6 +2416,7 @@ MODEM_CHAT_SCRIPT_DEFINE(sqn_gm02s_periodic_chat_script,
 		.uart = DEVICE_DT_GET(DT_INST_BUS(inst)),                                          \
 		.power_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, mdm_power_gpios, {}),                 \
 		.reset_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, mdm_reset_gpios, {}),                 \
+		.wake_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, mdm_wake_gpios, {}),                   \
 		.power_pulse_duration_ms = (power_ms),                                             \
 		.reset_pulse_duration_ms = (reset_ms),                                             \
 		.startup_time_ms  = (startup_ms),                                                  \