h1. Samsung-RIL

Samsung-RIL is the Radio Interface Layer that implements the Samsung IPC protocol and interfaces [[libsamsung-ipc]] and the Android framework:
<pre>
Modem <=> Linux kernel <=> libsamsung-ipc <=> Samsung-RIL <=> Android framework <=> Android applications
</pre>

Samsung-RIL is device-independent: it means that all the device-specific code takes place in [[libsamsung-ipc]], not in Samsung-RIL directly.

h2. Development

Samsung-RIL sources are hosted at: https://gitorious.org/replicant/hardware_ril_samsung-ril branch @master@
It is aimed that Samsung-RIL can work on any Android version from gingerbread to jellybean in the master branch.

h2. Status

Only GSM messages are supported for now: there is no CDMA support at all.

Global status: 

|_. RIL request/response |_. Functionality |_. Status |
| RIL_REQUEST_GET_SIM_STATUS | SIM status report  | Working |
| RIL_REQUEST_ENTER_SIM_PIN | SIM pin unlock | Working |
| RIL_REQUEST_ENTER_SIM_PUK | SIM puk unlock | Should work, untested |
| RIL_REQUEST_ENTER_SIM_PIN2 | SIM pin2 unlock | Should work, untested |
| RIL_REQUEST_ENTER_SIM_PUK2 | SIM puk unlock | Should work, untested |
| RIL_REQUEST_CHANGE_SIM_PIN | SIM pin change | Working |
| RIL_REQUEST_CHANGE_SIM_PIN2 | SIM pin2 change | Missing |
| RIL_REQUEST_ENTER_NETWORK_DEPERSONALIZATION | ? | Missing |
| RIL_REQUEST_GET_CURRENT_CALLS | Current calls report | Working |
| RIL_REQUEST_DIAL | Outgoing call | Working |
| RIL_REQUEST_GET_IMSI | IMSI report | Working |
| RIL_REQUEST_HANGUP | End call | Working |
| RIL_REQUEST_HANGUP_WAITING_OR_BACKGROUND | End waiting/bg call | Missing |
| RIL_REQUEST_HANGUP_FOREGROUND_RESUME_BACKGROUND | End current call and resume waiting call | Missing |
| RIL_REQUEST_SWITCH_WAITING_OR_HOLDING_AND_ACTIVE | Switch current/waiting-holding calls | Missing |
| RIL_REQUEST_SWITCH_HOLDING_AND_ACTIVE | Switch current/holding calls | Missing |
| RIL_REQUEST_CONFERENCE | Start a conference call | Missing |
| RIL_REQUEST_UDUB | Send user determined used busy | Missing |
| RIL_REQUEST_LAST_CALL_FAIL_CAUSE | Last call termination cause | Not working properly |
| RIL_REQUEST_SIGNAL_STRENGTH | Signal strength | Working |
| RIL_REQUEST_VOICE_REGISTRATION_STATE | GSM registration state report | Working |
| RIL_REQUEST_DATA_REGISTRATION_STATE | GPRS registration state report | Working |
| RIL_REQUEST_OPERATOR | Operator report | Working |
| RIL_REQUEST_RADIO_POWER | Modem power control | Working |
| RIL_REQUEST_DTMF | DTMF tones | Working |
| RIL_REQUEST_SEND_SMS | Send SMS | Working |
| RIL_REQUEST_SEND_SMS_EXPECT_MORE | Send multiple SMS | Working |
| RIL_REQUEST_SETUP_DATA_CALL | Start GPRS call | Working |
| RIL_REQUEST_SIM_IO | SIM I/O | Working |
| RIL_REQUEST_SEND_USSD | Send USSD message | Not working properly? |
| RIL_REQUEST_CANCEL_USSD | Cancel USSD | Should work |
| RIL_REQUEST_GET_CLIR | ? | Missing |
| RIL_REQUEST_SET_CLIR | ? | Missing |
| RIL_REQUEST_QUERY_CALL_FORWARD_STATUS |  |  |
| RIL_REQUEST_SET_CALL_FORWARD |  |  |
| RIL_REQUEST_QUERY_CALL_WAITING |  |  |
| RIL_REQUEST_SET_CALL_WAITING |  |  |
| RIL_REQUEST_SMS_ACKNOWLEDGE |  |  |
| RIL_REQUEST_GET_IMEI |  |  |
| RIL_REQUEST_GET_IMEISV |  |  |
| RIL_REQUEST_ANSWER |  |  |
| RIL_REQUEST_DEACTIVATE_DATA_CALL |  |  |
| RIL_REQUEST_QUERY_FACILITY_LOCK |  |  |
| RIL_REQUEST_SET_FACILITY_LOCK |  |  |
| RIL_REQUEST_CHANGE_BARRING_PASSWORD |  |  |
| RIL_REQUEST_QUERY_NETWORK_SELECTION_MODE |  |  |
| RIL_REQUEST_SET_NETWORK_SELECTION_AUTOMATIC |  |  |
| RIL_REQUEST_SET_NETWORK_SELECTION_MANUAL |  |  |
| RIL_REQUEST_QUERY_AVAILABLE_NETWORKS |  |  |
| RIL_REQUEST_DTMF_START |  |  |
| RIL_REQUEST_DTMF_STOP |  |  |
| RIL_REQUEST_BASEBAND_VERSION |  |  |
| RIL_REQUEST_SEPARATE_CONNECTION |  |  |
| RIL_REQUEST_SET_MUTE |  |  |
| RIL_REQUEST_GET_MUTE |  |  |
| RIL_REQUEST_QUERY_CLIP |  |  |
| RIL_REQUEST_LAST_DATA_CALL_FAIL_CAUSE |  |  |
| RIL_REQUEST_DATA_CALL_LIST |  |  |
| RIL_REQUEST_RESET_RADIO |  |  |
| RIL_REQUEST_OEM_HOOK_RAW |  |  |
| RIL_REQUEST_OEM_HOOK_STRINGS |  |  |
| RIL_REQUEST_SCREEN_STATE |  |  |
| RIL_REQUEST_SET_SUPP_SVC_NOTIFICATION |  |  |
| RIL_REQUEST_WRITE_SMS_TO_SIM |  |  |
| RIL_REQUEST_DELETE_SMS_ON_SIM |  |  |
| RIL_REQUEST_SET_BAND_MODE |  |  |
| RIL_REQUEST_QUERY_AVAILABLE_BAND_MODE |  |  |
| RIL_REQUEST_STK_GET_PROFILE |  |  |
| RIL_REQUEST_STK_SET_PROFILE |  |  |
| RIL_REQUEST_STK_SEND_ENVELOPE_COMMAND |  |  |
| RIL_REQUEST_STK_SEND_TERMINAL_RESPONSE |  |  |
| RIL_REQUEST_STK_HANDLE_CALL_SETUP_REQUESTED_FROM_SIM |  |  |
| RIL_REQUEST_EXPLICIT_CALL_TRANSFER |  |  |
| RIL_REQUEST_SET_PREFERRED_NETWORK_TYPE |  |  |
| RIL_REQUEST_GET_PREFERRED_NETWORK_TYPE |  |  |
| RIL_REQUEST_GET_NEIGHBORING_CELL_IDS |  |  |
| RIL_REQUEST_SET_LOCATION_UPDATES |  |  |
| RIL_REQUEST_CDMA_SET_SUBSCRIPTION_SOURCE |  |  |
| RIL_REQUEST_CDMA_SET_ROAMING_PREFERENCE |  |  |
| RIL_REQUEST_CDMA_QUERY_ROAMING_PREFERENCE |  |  |
| RIL_REQUEST_SET_TTY_MODE |  |  |
| RIL_REQUEST_QUERY_TTY_MODE |  |  |
| RIL_REQUEST_CDMA_SET_PREFERRED_VOICE_PRIVACY_MODE |  |  |
| RIL_REQUEST_CDMA_QUERY_PREFERRED_VOICE_PRIVACY_MODE |  |  |
| RIL_REQUEST_CDMA_FLASH |  |  |
| RIL_REQUEST_CDMA_BURST_DTMF |  |  |
| RIL_REQUEST_CDMA_VALIDATE_AND_WRITE_AKEY |  |  |
| RIL_REQUEST_CDMA_SEND_SMS |  |  |
| RIL_REQUEST_CDMA_SMS_ACKNOWLEDGE |  |  |
| RIL_REQUEST_GSM_GET_BROADCAST_SMS_CONFIG |  |  |
| RIL_REQUEST_GSM_SET_BROADCAST_SMS_CONFIG |  |  |
| RIL_REQUEST_GSM_SMS_BROADCAST_ACTIVATION |  |  |
| RIL_REQUEST_CDMA_GET_BROADCAST_SMS_CONFIG |  |  |
| RIL_REQUEST_CDMA_SET_BROADCAST_SMS_CONFIG |  |  |
| RIL_REQUEST_CDMA_SMS_BROADCAST_ACTIVATION |  |  |
| RIL_REQUEST_CDMA_SUBSCRIPTION |  |  |
| RIL_REQUEST_CDMA_WRITE_SMS_TO_RUIM |  |  |
| RIL_REQUEST_CDMA_DELETE_SMS_ON_RUIM |  |  |
| RIL_REQUEST_DEVICE_IDENTITY |  |  |
| RIL_REQUEST_EXIT_EMERGENCY_CALLBACK_MODE |  |  |
| RIL_REQUEST_GET_SMSC_ADDRESS |  |  |
| RIL_REQUEST_SET_SMSC_ADDRESS |  |  |
| RIL_REQUEST_REPORT_SMS_MEMORY_STATUS |  |  |
| RIL_REQUEST_REPORT_STK_SERVICE_IS_RUNNING |  |  |
| RIL_REQUEST_CDMA_GET_SUBSCRIPTION_SOURCE |  |  |
| RIL_REQUEST_ISIM_AUTHENTICATION |  |  |
| RIL_REQUEST_ACKNOWLEDGE_INCOMING_GSM_SMS_WITH_PDU |  |  |
| RIL_REQUEST_STK_SEND_ENVELOPE_WITH_STATUS |  |  |
| RIL_UNSOL_RESPONSE_BASE |  |  |
| RIL_UNSOL_RESPONSE_RADIO_STATE_CHANGED |  |  |
| RIL_UNSOL_RESPONSE_CALL_STATE_CHANGED |  |  |
| RIL_UNSOL_RESPONSE_VOICE_NETWORK_STATE_CHANGED |  |  |
| RIL_UNSOL_RESPONSE_NEW_SMS |  |  |
| RIL_UNSOL_RESPONSE_NEW_SMS_STATUS_REPORT |  |  |
| RIL_UNSOL_RESPONSE_NEW_SMS_ON_SIM |  |  |
| RIL_UNSOL_ON_USSD |  |  |
| RIL_UNSOL_ON_USSD_REQUEST |  |  |
| RIL_UNSOL_NITZ_TIME_RECEIVED |  |  |
| RIL_UNSOL_SIGNAL_STRENGTH |  |  |
| RIL_UNSOL_DATA_CALL_LIST_CHANGED |  |  |
| RIL_UNSOL_SUPP_SVC_NOTIFICATION |  |  |
| RIL_UNSOL_STK_SESSION_END |  |  |
| RIL_UNSOL_STK_PROACTIVE_COMMAND |  |  |
| RIL_UNSOL_STK_EVENT_NOTIFY |  |  |
| RIL_UNSOL_STK_CALL_SETUP |  |  |
| RIL_UNSOL_SIM_SMS_STORAGE_FULL |  |  |
| RIL_UNSOL_SIM_REFRESH |  |  |
| RIL_UNSOL_CALL_RING |  |  |
| RIL_UNSOL_RESPONSE_SIM_STATUS_CHANGED |  |  |
| RIL_UNSOL_RESPONSE_CDMA_NEW_SMS |  |  |
| RIL_UNSOL_RESPONSE_NEW_BROADCAST_SMS |  |  |
| RIL_UNSOL_CDMA_RUIM_SMS_STORAGE_FULL |  |  |
| RIL_UNSOL_RESTRICTED_STATE_CHANGED |  |  |
| RIL_UNSOL_ENTER_EMERGENCY_CALLBACK_MODE |  |  |
| RIL_UNSOL_CDMA_CALL_WAITING |  |  |
| RIL_UNSOL_CDMA_OTA_PROVISION_STATUS |  |  |
| RIL_UNSOL_CDMA_INFO_REC |  |  |
| RIL_UNSOL_OEM_HOOK_RAW |  |  |
| RIL_UNSOL_RINGBACK_TONE |  |  |
| RIL_UNSOL_RESEND_INCALL_MUTE |  |  |
| RIL_UNSOL_CDMA_SUBSCRIPTION_SOURCE_CHANGED |  |  |
| RIL_UNSOL_CDMA_PRL_CHANGED |  |  |
| RIL_UNSOL_EXIT_EMERGENCY_CALLBACK_MODE |  |  |
| RIL_UNSOL_RIL_CONNECTED |  |  |


h1. libsamsung-ipc

libsamsung-ipc is a free implementation of the protocol to speak with modems found in most Samsung devices. It is the low-level library used to communicate with the modem and needs an upper-layer (RIL) to interface with the system.

libsamsung-ipc is shared between SHR and Replicant projects. It's used in both for the Nexus S.

Source code is available under the GPLv2+ at: https://github.com/morphis/libsamsung-ipc (master branch).

The library is mostly complete

h2. ipc-modemctrl

ipc-modemctrl is a deprecated tool that was used at the beginning of the work for talking to the nexus S modem. It implemented basic functionalities (mostly SIM unlocking and network registration).

Usage:
<pre>
usage: ipc-modemctrl <command>
commands:
	start                 bootstrap modem and start read loop
	power-on              power on the modem
	power-off             power off the modem
arguments:
	--debug               enable debug messages
	--pin=[PIN]           provide SIM card PIN
</pre>

Please run ipc-modemctrl like this (from host pc): 

assuming your SIM PIN is 1234. If you don't have any SIM pin, don't pass the --pin argument. 

It should go like this:

<pre>
[I] Got SIM PIN!
[0] Starting modem on FMT client
[1] Starting modem_read_loop on FMT client
[2] Phone is powered up (LPM)!
[I] SIM card found
[I] SIM is initializing
[3] SIM init complete
[4] Modem is ready, requesting normal power mode
[I] SIM card found
[I] SIM is initializing
[3] SIM init complete
[5] Modem is fully ready
[I] Registered with network successfully!
[6] Registered with network! Got PLMN (Mobile Network Code): '20810'
[I] Registered with network successfully!
[6] Registered with network! Got PLMN (Mobile Network Code): '20810'
[I] Registered with network successfully!
[I] Registered with network successfully!
[6] Registered with network! Got PLMN (Mobile Network Code): '20810'
[I] SIM Phone Book init complete
</pre>

h2. ipc-modemctrl Status

We were able to make the following work:
* SMS (Rx/Tx)
* Call (Rx/Tx) BUT NO AUDIO YET
* GPRS 
* SIM I/O (stored contacts, etc)
* SIM PIN unlocking