drivers: modem: add support for Quectel EG800Q

Added support for Quectel EG800Q LTE Cat 1bis modem.

Signed-off-by: Vytautas Virvičius <vytautas@virvicius.dev>

drivers/modem/Kconfig.cellular

@@ -19,7 +19,8 @@ config MODEM_CELLULAR
 		    DT_HAS_U_BLOX_SARA_R5_ENABLED || DT_HAS_SWIR_HL7800_ENABLED || \
 		    DT_HAS_TELIT_ME910G1_ENABLED || DT_HAS_TELIT_ME310G1_ENABLED || \
 		    DT_HAS_QUECTEL_EG25_G_ENABLED || DT_HAS_NORDIC_NRF91_SLM_ENABLED || \
-		    DT_HAS_SQN_GM02S_ENABLED || DT_HAS_U_BLOX_LARA_R6_ENABLED)
+		    DT_HAS_SQN_GM02S_ENABLED || DT_HAS_U_BLOX_LARA_R6_ENABLED || \
+		    DT_HAS_QUECTEL_EG800Q_ENABLED)
 	help
 	  This driver uses the generic 3gpp AT commands, along
 	  with the standard protocols CMUX and PPP, to configure

drivers/modem/modem_cellular.c

@@ -525,7 +525,8 @@ MODEM_CHAT_MATCHES_DEFINE(dial_abort_matches,
 			  MODEM_CHAT_MATCH("NO CARRIER", "", NULL),
 			  MODEM_CHAT_MATCH("NO DIALTONE", "", NULL));
 
-#if DT_HAS_COMPAT_STATUS_OKAY(swir_hl7800) || DT_HAS_COMPAT_STATUS_OKAY(sqn_gm02s)
+#if DT_HAS_COMPAT_STATUS_OKAY(swir_hl7800) || DT_HAS_COMPAT_STATUS_OKAY(sqn_gm02s) ||		   \
+	DT_HAS_COMPAT_STATUS_OKAY(quectel_eg800q)
 MODEM_CHAT_MATCH_DEFINE(connect_match, "CONNECT", "", NULL);
 #endif
 
@@ -2022,6 +2023,54 @@ MODEM_CHAT_SCRIPT_DEFINE(quectel_eg25_g_periodic_chat_script,
 			 modem_cellular_chat_callback_handler, 4);
 #endif
 
+#if DT_HAS_COMPAT_STATUS_OKAY(quectel_eg800q)
+MODEM_CHAT_SCRIPT_CMDS_DEFINE(quectel_eg800q_init_chat_script_cmds,
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("ATE0", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CFUN?", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CFUN=4", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CMEE=1", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CEREG=1", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CEREG?", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CGSN", imei_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CGMM", cgmm_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CGMI", cgmi_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CGMR", cgmr_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CIMI", cimi_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CMUX=0,0,5,127", ok_match));
+
+MODEM_CHAT_SCRIPT_DEFINE(quectel_eg800q_init_chat_script, quectel_eg800q_init_chat_script_cmds,
+			 abort_matches, modem_cellular_chat_callback_handler, 30);
+
+MODEM_CHAT_SCRIPT_CMDS_DEFINE(quectel_eg800q_dial_chat_script_cmds,
+			      MODEM_CHAT_SCRIPT_CMD_RESP_MULT("AT+CGACT=0,1", allow_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CGDCONT=1,\"IP\","
+							 "\""CONFIG_MODEM_CELLULAR_APN"\"",
+							 ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CFUN=1", ok_match),
+			      /* this at command is required as a small delay before performing
+			       * dialing, otherwise we get 'NO CARRIER' and abort
+			       */
+			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 500),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("ATD*99***1#", connect_match),);
+
+MODEM_CHAT_SCRIPT_DEFINE(quectel_eg800q_dial_chat_script, quectel_eg800q_dial_chat_script_cmds,
+			 dial_abort_matches, modem_cellular_chat_callback_handler, 10);
+
+MODEM_CHAT_SCRIPT_CMDS_DEFINE(quectel_eg800q_periodic_chat_script_cmds,
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CEREG?", ok_match),
+			      MODEM_CHAT_SCRIPT_CMD_RESP("AT+CSQ", csq_match));
+
+MODEM_CHAT_SCRIPT_DEFINE(quectel_eg800q_periodic_chat_script,
+			 quectel_eg800q_periodic_chat_script_cmds, abort_matches,
+			 modem_cellular_chat_callback_handler, 4);
+#endif
+
 #if DT_HAS_COMPAT_STATUS_OKAY(simcom_sim7080)
 MODEM_CHAT_SCRIPT_CMDS_DEFINE(simcom_sim7080_init_chat_script_cmds,
 			      MODEM_CHAT_SCRIPT_CMD_RESP_NONE("AT", 100),
@@ -2551,6 +2600,25 @@ MODEM_CHAT_SCRIPT_DEFINE(sqn_gm02s_periodic_chat_script,
 				       &quectel_eg25_g_dial_chat_script,                           \
 				       &quectel_eg25_g_periodic_chat_script, NULL)
 
+#define MODEM_CELLULAR_DEVICE_QUECTEL_EG800Q(inst)                                                 \
+	MODEM_PPP_DEFINE(MODEM_CELLULAR_INST_NAME(ppp, inst), NULL, 98, 1500, 64);                 \
+                                                                                                   \
+	static struct modem_cellular_data MODEM_CELLULAR_INST_NAME(data, inst) = {                 \
+		.chat_delimiter = "\r",                                                            \
+		.chat_filter = "\n",                                                               \
+		.ppp = &MODEM_CELLULAR_INST_NAME(ppp, inst),                                       \
+	};                                                                                         \
+                                                                                                   \
+	MODEM_CELLULAR_DEFINE_AND_INIT_USER_PIPES(inst,                                            \
+						  (user_pipe_0, 3),                                \
+						  (user_pipe_1, 4))                                \
+                                                                                                   \
+	MODEM_CELLULAR_DEFINE_INSTANCE(inst, 1500, 500, 15000, 5000, false,                        \
+				       NULL,                                                       \
+				       &quectel_eg800q_init_chat_script,                           \
+				       &quectel_eg800q_dial_chat_script,                           \
+				       &quectel_eg800q_periodic_chat_script, NULL)
+
 #define MODEM_CELLULAR_DEVICE_SIMCOM_SIM7080(inst)                                                 \
 	MODEM_PPP_DEFINE(MODEM_CELLULAR_INST_NAME(ppp, inst), NULL, 98, 1500, 64);                 \
                                                                                                    \
@@ -2729,6 +2797,10 @@ DT_INST_FOREACH_STATUS_OKAY(MODEM_CELLULAR_DEVICE_QUECTEL_BG95)
 DT_INST_FOREACH_STATUS_OKAY(MODEM_CELLULAR_DEVICE_QUECTEL_EG25_G)
 #undef DT_DRV_COMPAT
 
+#define DT_DRV_COMPAT quectel_eg800q
+DT_INST_FOREACH_STATUS_OKAY(MODEM_CELLULAR_DEVICE_QUECTEL_EG800Q)
+#undef DT_DRV_COMPAT
+
 #define DT_DRV_COMPAT simcom_sim7080
 DT_INST_FOREACH_STATUS_OKAY(MODEM_CELLULAR_DEVICE_SIMCOM_SIM7080)
 #undef DT_DRV_COMPAT

dts/bindings/modem/quectel,eg800q.yaml

@@ -0,0 +1,10 @@
+description: Quectel EG800Q modem
+
+compatible: "quectel,eg800q"
+
+include: uart-device.yaml
+
+properties:
+  mdm-power-gpios:
+    type: phandle-array
+    required: true

subsys/modem/Kconfig

@@ -35,7 +35,7 @@ config MODEM_CMUX_DEFAULT_MTU_127
 		      DT_HAS_SIMCOM_SIM7080_ENABLED || DT_HAS_U_BLOX_SARA_R4_ENABLED || \
 		      DT_HAS_U_BLOX_SARA_R5_ENABLED || DT_HAS_SWIR_HL7800_ENABLED || \
 		      DT_HAS_TELIT_ME910G1_ENABLED || DT_HAS_TELIT_ME310G1_ENABLED || \
-		      DT_HAS_SQN_GM02S_ENABLED)
+		      DT_HAS_SQN_GM02S_ENABLED || DT_HAS_QUECTEL_EG800Q_ENABLED)
 	help
 	  Use the default MTU size of 127 bytes for the CMUX module on certain modems.
 	  This must match the AT+CMUX commands in the modem_cellular driver.