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|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details:
*
* Copyright (C) 2014 Ammonit Measurement GmbH
* Author: Aleksander Morgado <aleksander@aleksander.es>
*/
#include "mm-common-cinterion.h"
#include "mm-base-modem-at.h"
static MMIfaceModemLocation *iface_modem_location_parent;
/*****************************************************************************/
#define CINTERION_LOCATION_CONTEXT_TAG "cinterion-location-tag"
static GQuark cinterion_location_context_quark;
/*****************************************************************************/
typedef enum {
FEATURE_SUPPORT_UNKNOWN,
FEATURE_NOT_SUPPORTED,
FEATURE_SUPPORTED,
} FeatureSupport;
typedef struct {
MMModemLocationSource enabled_sources;
FeatureSupport sgpss_support;
} LocationContext;
static void
location_context_free (LocationContext *ctx)
{
g_slice_free (LocationContext, ctx);
}
static LocationContext *
get_location_context (MMBaseModem *self)
{
LocationContext *ctx;
if (G_UNLIKELY (!cinterion_location_context_quark))
cinterion_location_context_quark = (g_quark_from_static_string (
CINTERION_LOCATION_CONTEXT_TAG));
ctx = g_object_get_qdata (G_OBJECT (self), cinterion_location_context_quark);
if (!ctx) {
/* Create context and keep it as object data */
ctx = g_slice_new (LocationContext);
ctx->enabled_sources = MM_MODEM_LOCATION_SOURCE_NONE;
ctx->sgpss_support = FEATURE_SUPPORT_UNKNOWN;
g_object_set_qdata_full (
G_OBJECT (self),
cinterion_location_context_quark,
ctx,
(GDestroyNotify)location_context_free);
}
return ctx;
}
/*****************************************************************************/
/* Location capabilities loading (Location interface) */
typedef struct {
MMModemLocationSource sources;
} LoadCapabilitiesContext;
static void
load_capabilities_context_free (LoadCapabilitiesContext *ctx)
{
g_slice_free (LoadCapabilitiesContext, ctx);
}
MMModemLocationSource
mm_common_cinterion_location_load_capabilities_finish (MMIfaceModemLocation *self,
GAsyncResult *res,
GError **error)
{
gssize aux;
if ((aux = g_task_propagate_int (G_TASK (res), error)) < 0)
return MM_MODEM_LOCATION_SOURCE_NONE;
return (MMModemLocationSource) aux;
}
static void probe_gps_features (GTask *task);
static void
sgpss_test_ready (MMBaseModem *self,
GAsyncResult *res,
GTask *task)
{
LocationContext *location_ctx;
location_ctx = get_location_context (self);
if (!mm_base_modem_at_command_finish (self, res, NULL))
location_ctx->sgpss_support = FEATURE_NOT_SUPPORTED;
else
location_ctx->sgpss_support = FEATURE_SUPPORTED;
probe_gps_features (task);
}
static void
probe_gps_features (GTask *task)
{
LoadCapabilitiesContext *ctx;
MMBaseModem *self;
LocationContext *location_ctx;
ctx = (LoadCapabilitiesContext *) g_task_get_task_data (task);
self = MM_BASE_MODEM (g_task_get_source_object (task));
location_ctx = get_location_context (self);
/* Need to check if SGPSS supported... */
if (location_ctx->sgpss_support == FEATURE_SUPPORT_UNKNOWN) {
mm_base_modem_at_command (self, "AT^SGPSS=?", 3, TRUE, (GAsyncReadyCallback) sgpss_test_ready, task);
return;
}
/* All GPS features probed, check if GPS supported */
if (location_ctx->sgpss_support == FEATURE_SUPPORTED) {
mm_dbg ("GPS commands supported: GPS capabilities enabled");
ctx->sources |= (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW |
MM_MODEM_LOCATION_SOURCE_GPS_UNMANAGED);
} else
mm_dbg ("No GPS command supported: no GPS capabilities");
g_task_return_int (task, (gssize) ctx->sources);
g_object_unref (task);
}
static void
parent_load_capabilities_ready (MMIfaceModemLocation *self,
GAsyncResult *res,
GTask *task)
{
LoadCapabilitiesContext *ctx;
GError *error = NULL;
ctx = (LoadCapabilitiesContext *) g_task_get_task_data (task);
ctx->sources = iface_modem_location_parent->load_capabilities_finish (self, res, &error);
if (error) {
g_task_return_error (task, error);
g_object_unref (task);
return;
}
/* Now our own check. If we don't have any GPS port, we're done */
if (!mm_base_modem_peek_port_gps (MM_BASE_MODEM (self))) {
mm_dbg ("No GPS data port found: no GPS capabilities");
g_task_return_boolean (task, TRUE);
g_object_unref (task);
return;
}
/* Probe all GPS features */
probe_gps_features (task);
}
void
mm_common_cinterion_location_load_capabilities (MMIfaceModemLocation *self,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
LoadCapabilitiesContext *ctx;
task = g_task_new (self, NULL, callback, user_data);
ctx = g_slice_new0 (LoadCapabilitiesContext);
ctx->sources = MM_MODEM_LOCATION_SOURCE_NONE;
g_task_set_task_data (task, ctx, (GDestroyNotify) load_capabilities_context_free);
/* Chain up parent's setup */
iface_modem_location_parent->load_capabilities (
self,
(GAsyncReadyCallback)parent_load_capabilities_ready,
task);
}
/*****************************************************************************/
/* Disable location gathering (Location interface) */
typedef enum {
DISABLE_LOCATION_GATHERING_GPS_STEP_FIRST,
DISABLE_LOCATION_GATHERING_GPS_STEP_SGPSS,
DISABLE_LOCATION_GATHERING_GPS_STEP_LAST,
} DisableLocationGatheringGpsStep;
typedef struct {
MMModemLocationSource source;
DisableLocationGatheringGpsStep gps_step;
GError *sgpss_error;
} DisableLocationGatheringContext;
static void
disable_location_gathering_context_free (DisableLocationGatheringContext *ctx)
{
if (ctx->sgpss_error)
g_error_free (ctx->sgpss_error);
g_slice_free (DisableLocationGatheringContext, ctx);
}
gboolean
mm_common_cinterion_disable_location_gathering_finish (MMIfaceModemLocation *self,
GAsyncResult *res,
GError **error)
{
return g_task_propagate_boolean (G_TASK (res), error);
}
static void disable_location_gathering_context_gps_step (GTask *task);
static void
disable_sgpss_ready (MMBaseModem *self,
GAsyncResult *res,
GTask *task)
{
DisableLocationGatheringContext *ctx;
ctx = (DisableLocationGatheringContext *) g_task_get_task_data (task);
/* Store error, if any, and continue */
g_assert (!ctx->sgpss_error);
mm_base_modem_at_command_finish (self, res, &ctx->sgpss_error);
ctx->gps_step++;
disable_location_gathering_context_gps_step (task);
}
static void
disable_location_gathering_context_gps_step (GTask *task)
{
DisableLocationGatheringContext *ctx;
MMBaseModem *self;
LocationContext *location_ctx;
self = MM_BASE_MODEM (g_task_get_source_object (task));
ctx = (DisableLocationGatheringContext *) g_task_get_task_data (task);
location_ctx = get_location_context (MM_BASE_MODEM (self));
switch (ctx->gps_step) {
case DISABLE_LOCATION_GATHERING_GPS_STEP_FIRST:
ctx->gps_step++;
/* Fall down to next step */
case DISABLE_LOCATION_GATHERING_GPS_STEP_SGPSS:
g_assert (location_ctx->sgpss_support == FEATURE_SUPPORTED);
mm_base_modem_at_command (MM_BASE_MODEM (self),
"AT^SGPSS=0",
3, FALSE, (GAsyncReadyCallback) disable_sgpss_ready, task);
return;
case DISABLE_LOCATION_GATHERING_GPS_STEP_LAST:
/* Only use the GPS port in NMEA/RAW setups */
if (ctx->source & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW)) {
MMPortSerialGps *gps_port;
/* Even if we get an error here, we try to close the GPS port */
gps_port = mm_base_modem_peek_port_gps (self);
if (gps_port)
mm_port_serial_close (MM_PORT_SERIAL (gps_port));
}
if (ctx->sgpss_error) {
g_task_return_error (task, ctx->sgpss_error);
g_clear_error (&ctx->sgpss_error);
} else
g_task_return_boolean (task, TRUE);
g_object_unref (task);
return;
}
}
static void
internal_disable_location_gathering (GTask *task)
{
DisableLocationGatheringContext *ctx;
LocationContext *location_ctx;
gboolean stop_gps = FALSE;
ctx = (DisableLocationGatheringContext *) g_task_get_task_data (task);
location_ctx = get_location_context (MM_BASE_MODEM (g_task_get_source_object (task)));
/* Only stop GPS engine if no GPS-related sources enabled */
if (ctx->source & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW |
MM_MODEM_LOCATION_SOURCE_GPS_UNMANAGED)) {
location_ctx->enabled_sources &= ~ctx->source;
if (!(location_ctx->enabled_sources & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW |
MM_MODEM_LOCATION_SOURCE_GPS_UNMANAGED)))
stop_gps = TRUE;
}
/* Run GPS stop sequence only if required to do so */
if (stop_gps) {
disable_location_gathering_context_gps_step (task);
return;
}
/* For any other location (e.g. 3GPP), or if still some GPS needed, just return */
g_task_return_boolean (task, TRUE);
g_object_unref (task);
}
static void
parent_disable_location_gathering_ready (MMIfaceModemLocation *self,
GAsyncResult *res,
GTask *task)
{
DisableLocationGatheringContext *ctx;
GError *error = NULL;
ctx = (DisableLocationGatheringContext *) g_task_get_task_data (task);
if (!iface_modem_location_parent->disable_location_gathering_finish (self, res, &error)) {
/* Errors when disabling non-GPS sources are fatal */
if (!(ctx->source & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW |
MM_MODEM_LOCATION_SOURCE_GPS_UNMANAGED))) {
g_task_return_error (task, error);
g_object_unref (task);
return;
}
/* Ignore errors when disabling GPS, we can try with AT commands */
g_error_free (error);
}
internal_disable_location_gathering (task);
}
void
mm_common_cinterion_disable_location_gathering (MMIfaceModemLocation *self,
MMModemLocationSource source,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
DisableLocationGatheringContext *ctx;
task = g_task_new (self, NULL, callback, user_data);
ctx = g_slice_new0 (DisableLocationGatheringContext);
ctx->source = source;
ctx->gps_step = DISABLE_LOCATION_GATHERING_GPS_STEP_FIRST;
g_task_set_task_data (task, ctx, (GDestroyNotify) disable_location_gathering_context_free);
/* Chain up parent's gathering enable */
if (iface_modem_location_parent->disable_location_gathering) {
iface_modem_location_parent->disable_location_gathering (
self,
source,
(GAsyncReadyCallback)parent_disable_location_gathering_ready,
task);
return;
}
internal_disable_location_gathering (task);
}
/*****************************************************************************/
/* Enable location gathering (Location interface) */
typedef enum {
ENABLE_LOCATION_GATHERING_GPS_STEP_FIRST,
ENABLE_LOCATION_GATHERING_GPS_STEP_SGPSS,
ENABLE_LOCATION_GATHERING_GPS_STEP_LAST,
} EnableLocationGatheringGpsStep;
typedef struct {
MMModemLocationSource source;
EnableLocationGatheringGpsStep gps_step;
gboolean sgpss_success;
} EnableLocationGatheringContext;
static void
enable_location_gathering_context_free (EnableLocationGatheringContext *ctx)
{
g_slice_free (EnableLocationGatheringContext, ctx);
}
gboolean
mm_common_cinterion_enable_location_gathering_finish (MMIfaceModemLocation *self,
GAsyncResult *res,
GError **error)
{
return g_task_propagate_boolean (G_TASK (res), error);
}
static void enable_location_gathering_context_gps_step (GTask *task);
static void
enable_sgpss_ready (MMBaseModem *self,
GAsyncResult *res,
GTask *task)
{
EnableLocationGatheringContext *ctx;
GError *error = NULL;
ctx = (EnableLocationGatheringContext *) g_task_get_task_data (task);
if (!mm_base_modem_at_command_finish (self, res, &error)) {
g_task_return_error (task, error);
g_object_unref (task);
return;
}
/* Flag as success with this method */
ctx->sgpss_success = TRUE;
/* And jump to last step */
ctx->gps_step = ENABLE_LOCATION_GATHERING_GPS_STEP_LAST;
enable_location_gathering_context_gps_step (task);
}
static void
enable_location_gathering_context_gps_step (GTask *task)
{
EnableLocationGatheringContext *ctx;
MMBaseModem *self;
LocationContext *location_ctx;
self = MM_BASE_MODEM (g_task_get_source_object (task));
ctx = (EnableLocationGatheringContext *) g_task_get_task_data (task);
location_ctx = get_location_context (MM_BASE_MODEM (self));
switch (ctx->gps_step) {
case ENABLE_LOCATION_GATHERING_GPS_STEP_FIRST:
ctx->gps_step++;
/* Fall down to next step */
case ENABLE_LOCATION_GATHERING_GPS_STEP_SGPSS:
g_assert (location_ctx->sgpss_support == FEATURE_SUPPORTED);
mm_base_modem_at_command (MM_BASE_MODEM (self),
"AT^SGPSS=4",
3, FALSE, (GAsyncReadyCallback) enable_sgpss_ready, task);
return;
case ENABLE_LOCATION_GATHERING_GPS_STEP_LAST:
g_assert (ctx->sgpss_success);
/* Only use the GPS port in NMEA/RAW setups */
if (ctx->source & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW)) {
MMPortSerialGps *gps_port;
GError *error = NULL;
gps_port = mm_base_modem_peek_port_gps (self);
if (!gps_port || !mm_port_serial_open (MM_PORT_SERIAL (gps_port), &error)) {
if (error)
g_task_return_error (task, error);
else
g_task_return_new_error (task, MM_CORE_ERROR, MM_CORE_ERROR_FAILED,
"Couldn't open raw GPS serial port");
g_object_unref (task);
return;
}
}
/* Success */
g_task_return_boolean (task, TRUE);
g_object_unref (task);
return;
}
}
static void
internal_enable_location_gathering (GTask *task)
{
EnableLocationGatheringContext *ctx;
LocationContext *location_ctx;
gboolean start_gps = FALSE;
ctx = (EnableLocationGatheringContext *) g_task_get_task_data (task);
location_ctx = get_location_context (MM_BASE_MODEM (g_task_get_source_object (task)));
/* NMEA and RAW are both enabled in the same way */
if (ctx->source & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW |
MM_MODEM_LOCATION_SOURCE_GPS_UNMANAGED)) {
/* Only start GPS engine if not done already */
if (!(location_ctx->enabled_sources & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW |
MM_MODEM_LOCATION_SOURCE_GPS_UNMANAGED)))
start_gps = TRUE;
location_ctx->enabled_sources |= ctx->source;
}
if (start_gps) {
enable_location_gathering_context_gps_step (task);
return;
}
/* For any other location (e.g. 3GPP), or if GPS already running just return */
g_task_return_boolean (task, TRUE);
g_object_unref (task);
}
static void
parent_enable_location_gathering_ready (MMIfaceModemLocation *self,
GAsyncResult *res,
GTask *task)
{
EnableLocationGatheringContext *ctx;
GError *error = NULL;
ctx = (EnableLocationGatheringContext *) g_task_get_task_data (task);
if (!iface_modem_location_parent->enable_location_gathering_finish (self, res, &error)) {
/* Errors when enabling non-GPS sources are fatal */
if (!(ctx->source & (MM_MODEM_LOCATION_SOURCE_GPS_NMEA |
MM_MODEM_LOCATION_SOURCE_GPS_RAW |
MM_MODEM_LOCATION_SOURCE_GPS_UNMANAGED))) {
g_task_return_error (task, error);
g_object_unref (task);
return;
}
/* Ignore errors when enabling GPS, we can try with AT commands */
g_error_free (error);
}
/* Now our own enabling */
internal_enable_location_gathering (task);
}
void
mm_common_cinterion_enable_location_gathering (MMIfaceModemLocation *self,
MMModemLocationSource source,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
EnableLocationGatheringContext *ctx;
task = g_task_new (self, NULL, callback, user_data);
ctx = g_slice_new0 (EnableLocationGatheringContext);
ctx->source = source;
ctx->gps_step = ENABLE_LOCATION_GATHERING_GPS_STEP_FIRST;
g_task_set_task_data (task, ctx, (GDestroyNotify) enable_location_gathering_context_free);
/* Chain up parent's gathering enable */
iface_modem_location_parent->enable_location_gathering (
self,
source,
(GAsyncReadyCallback)parent_enable_location_gathering_ready,
task);
}
/*****************************************************************************/
/* Setup ports (Broadband modem class) */
static void
trace_received (MMPortSerialGps *port,
const gchar *trace,
MMIfaceModemLocation *self)
{
/* Helper to debug GPS location related issues. Don't depend on a real GPS
* fix for debugging, just use some random values to update */
#if 0
if (g_str_has_prefix (trace, "$GPGGA")) {
GString *str;
GDateTime *now;
now = g_date_time_new_now_utc ();
str = g_string_new ("");
g_string_append_printf (str,
"$GPGGA,%02u%02u%02u,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47",
g_date_time_get_hour (now),
g_date_time_get_minute (now),
g_date_time_get_second (now));
mm_iface_modem_location_gps_update (self, str->str);
g_string_free (str, TRUE);
g_date_time_unref (now);
return;
}
#endif
mm_iface_modem_location_gps_update (self, trace);
}
void
mm_common_cinterion_setup_gps_port (MMBroadbandModem *self)
{
MMPortSerialGps *gps_data_port;
gps_data_port = mm_base_modem_peek_port_gps (MM_BASE_MODEM (self));
if (gps_data_port) {
/* It may happen that the modem was started with GPS already enabled, or
* maybe ModemManager got rebooted and it was left enabled before. We'll make
* sure that it is disabled when we initialize the modem */
mm_base_modem_at_command_full (MM_BASE_MODEM (self),
mm_base_modem_peek_best_at_port (MM_BASE_MODEM (self), NULL),
"AT^SGPSS=0",
3, FALSE, FALSE, NULL, NULL, NULL);
/* Add handler for the NMEA traces */
mm_port_serial_gps_add_trace_handler (gps_data_port,
(MMPortSerialGpsTraceFn)trace_received,
self,
NULL);
}
}
/*****************************************************************************/
void
mm_common_cinterion_peek_parent_location_interface (MMIfaceModemLocation *iface)
{
iface_modem_location_parent = g_type_interface_peek_parent (iface);
}
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