libsigrok
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00001 /* 00002 * This file is part of the sigrok project. 00003 * 00004 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> 00005 * 00006 * This program is free software: you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation, either version 3 of the License, or 00009 * (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this program. If not, see <http://www.gnu.org/licenses/>. 00018 */ 00019 00020 #include <stdlib.h> 00021 #include <stdio.h> 00022 #include <sys/types.h> 00023 #include <dirent.h> 00024 #include <string.h> 00025 #include <glib.h> 00026 #include "sigrok.h" 00027 #include "sigrok-internal.h" 00028 00029 /* 00030 * This enumerates which driver capabilities correspond to user-settable 00031 * options. 00032 */ 00033 /* TODO: This shouldn't be a global. */ 00034 SR_API struct sr_hwcap_option sr_hwcap_options[] = { 00035 {SR_HWCAP_SAMPLERATE, SR_T_UINT64, "Sample rate", "samplerate"}, 00036 {SR_HWCAP_CAPTURE_RATIO, SR_T_UINT64, "Pre-trigger capture ratio", "captureratio"}, 00037 {SR_HWCAP_PATTERN_MODE, SR_T_CHAR, "Pattern generator mode", "pattern"}, 00038 {SR_HWCAP_RLE, SR_T_BOOL, "Run Length Encoding", "rle"}, 00039 {0, 0, NULL, NULL}, 00040 }; 00041 00042 #ifdef HAVE_LA_DEMO 00043 extern SR_PRIV struct sr_dev_driver demo_driver_info; 00044 #endif 00045 #ifdef HAVE_LA_OLS 00046 extern SR_PRIV struct sr_dev_driver ols_driver_info; 00047 #endif 00048 #ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE 00049 extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info; 00050 #endif 00051 #ifdef HAVE_LA_ASIX_SIGMA 00052 extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info; 00053 #endif 00054 #ifdef HAVE_LA_CHRONOVU_LA8 00055 extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info; 00056 #endif 00057 #ifdef HAVE_LA_LINK_MSO19 00058 extern SR_PRIV struct sr_dev_driver link_mso19_driver_info; 00059 #endif 00060 #ifdef HAVE_LA_ALSA 00061 extern SR_PRIV struct sr_dev_driver alsa_driver_info; 00062 #endif 00063 #ifdef HAVE_LA_FX2LAFW 00064 extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info; 00065 #endif 00066 00067 static struct sr_dev_driver *drivers_list[] = { 00068 #ifdef HAVE_LA_DEMO 00069 &demo_driver_info, 00070 #endif 00071 #ifdef HAVE_LA_OLS 00072 &ols_driver_info, 00073 #endif 00074 #ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE 00075 &zeroplus_logic_cube_driver_info, 00076 #endif 00077 #ifdef HAVE_LA_ASIX_SIGMA 00078 &asix_sigma_driver_info, 00079 #endif 00080 #ifdef HAVE_LA_CHRONOVU_LA8 00081 &chronovu_la8_driver_info, 00082 #endif 00083 #ifdef HAVE_LA_LINK_MSO19 00084 &link_mso19_driver_info, 00085 #endif 00086 #ifdef HAVE_LA_ALSA 00087 &alsa_driver_info, 00088 #endif 00089 #ifdef HAVE_LA_FX2LAFW 00090 &fx2lafw_driver_info, 00091 #endif 00092 NULL, 00093 }; 00094 00095 /** 00096 * Return the list of supported hardware drivers. 00097 * 00098 * @return Pointer to the NULL-terminated list of hardware driver pointers. 00099 */ 00100 SR_API struct sr_dev_driver **sr_driver_list(void) 00101 { 00102 return drivers_list; 00103 } 00104 00105 /** 00106 * Initialize a hardware driver. 00107 * 00108 * The specified driver is initialized, and all devices discovered by the 00109 * driver are instantiated. 00110 * 00111 * @param driver The driver to initialize. 00112 * 00113 * @return The number of devices found and instantiated by the driver. 00114 */ 00115 SR_API int sr_driver_init(struct sr_dev_driver *driver) 00116 { 00117 int num_devs, num_probes, i, j; 00118 int num_initialized_devs = 0; 00119 struct sr_dev *dev; 00120 char **probe_names; 00121 00122 sr_dbg("initializing %s driver", driver->name); 00123 num_devs = driver->init(NULL); 00124 for (i = 0; i < num_devs; i++) { 00125 num_probes = GPOINTER_TO_INT( 00126 driver->dev_info_get(i, SR_DI_NUM_PROBES)); 00127 probe_names = (char **)driver->dev_info_get(i, 00128 SR_DI_PROBE_NAMES); 00129 00130 if (!probe_names) { 00131 sr_warn("hwdriver: %s: driver %s does not return a " 00132 "list of probe names", __func__, driver->name); 00133 continue; 00134 } 00135 00136 dev = sr_dev_new(driver, i); 00137 for (j = 0; j < num_probes; j++) 00138 sr_dev_probe_add(dev, probe_names[j]); 00139 num_initialized_devs++; 00140 } 00141 00142 return num_initialized_devs; 00143 } 00144 00145 SR_PRIV void sr_hw_cleanup_all(void) 00146 { 00147 int i; 00148 struct sr_dev_driver **drivers; 00149 00150 drivers = sr_driver_list(); 00151 for (i = 0; drivers[i]; i++) { 00152 if (drivers[i]->cleanup) 00153 drivers[i]->cleanup(); 00154 } 00155 } 00156 00157 SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int index, int status, 00158 const char *vendor, const char *model, const char *version) 00159 { 00160 struct sr_dev_inst *sdi; 00161 00162 if (!(sdi = g_try_malloc(sizeof(struct sr_dev_inst)))) { 00163 sr_err("hwdriver: %s: sdi malloc failed", __func__); 00164 return NULL; 00165 } 00166 00167 sdi->index = index; 00168 sdi->status = status; 00169 sdi->inst_type = -1; 00170 sdi->vendor = vendor ? g_strdup(vendor) : NULL; 00171 sdi->model = model ? g_strdup(model) : NULL; 00172 sdi->version = version ? g_strdup(version) : NULL; 00173 sdi->priv = NULL; 00174 00175 return sdi; 00176 } 00177 00178 SR_PRIV struct sr_dev_inst *sr_dev_inst_get(GSList *dev_insts, int dev_index) 00179 { 00180 struct sr_dev_inst *sdi; 00181 GSList *l; 00182 00183 for (l = dev_insts; l; l = l->next) { 00184 sdi = (struct sr_dev_inst *)(l->data); 00185 if (sdi->index == dev_index) 00186 return sdi; 00187 } 00188 sr_warn("could not find device index %d instance", dev_index); 00189 00190 return NULL; 00191 } 00192 00193 SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi) 00194 { 00195 g_free(sdi->priv); 00196 g_free(sdi->vendor); 00197 g_free(sdi->model); 00198 g_free(sdi->version); 00199 g_free(sdi); 00200 } 00201 00202 #ifdef HAVE_LIBUSB_1_0 00203 00204 SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus, 00205 uint8_t address, struct libusb_device_handle *hdl) 00206 { 00207 struct sr_usb_dev_inst *udi; 00208 00209 if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) { 00210 sr_err("hwdriver: %s: udi malloc failed", __func__); 00211 return NULL; 00212 } 00213 00214 udi->bus = bus; 00215 udi->address = address; 00216 udi->devhdl = hdl; /* TODO: Check if this is NULL? */ 00217 00218 return udi; 00219 } 00220 00221 SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb) 00222 { 00223 /* Avoid compiler warnings. */ 00224 (void)usb; 00225 00226 /* Nothing to do for this device instance type. */ 00227 } 00228 00229 #endif 00230 00231 SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port, 00232 int fd) 00233 { 00234 struct sr_serial_dev_inst *serial; 00235 00236 if (!(serial = g_try_malloc(sizeof(struct sr_serial_dev_inst)))) { 00237 sr_err("hwdriver: %s: serial malloc failed", __func__); 00238 return NULL; 00239 } 00240 00241 serial->port = g_strdup(port); 00242 serial->fd = fd; 00243 00244 return serial; 00245 } 00246 00247 SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial) 00248 { 00249 g_free(serial->port); 00250 } 00251 00252 /** 00253 * Find out if a hardware driver has a specific capability. 00254 * 00255 * @param driver The hardware driver in which to search for the capability. 00256 * @param hwcap The capability to find in the list. 00257 * 00258 * @return TRUE if the specified capability exists in the specified driver, 00259 * FALSE otherwise. Also, if 'driver' is NULL or the respective driver 00260 * returns an invalid capability list, FALSE is returned. 00261 */ 00262 SR_API gboolean sr_driver_hwcap_exists(struct sr_dev_driver *driver, int hwcap) 00263 { 00264 int *hwcaps, i; 00265 00266 if (!driver) { 00267 sr_err("hwdriver: %s: driver was NULL", __func__); 00268 return FALSE; 00269 } 00270 00271 if (!(hwcaps = driver->hwcap_get_all())) { 00272 sr_err("hwdriver: %s: hwcap_get_all() returned NULL", __func__); 00273 return FALSE; 00274 } 00275 00276 for (i = 0; hwcaps[i]; i++) { 00277 if (hwcaps[i] == hwcap) 00278 return TRUE; 00279 } 00280 00281 return FALSE; 00282 } 00283 00284 /** 00285 * Get a hardware driver capability option. 00286 * 00287 * @param hwcap The capability to get. 00288 * 00289 * @return A pointer to a struct with information about the parameter, or NULL 00290 * if the capability was not found. 00291 */ 00292 SR_API struct sr_hwcap_option *sr_hw_hwcap_get(int hwcap) 00293 { 00294 int i; 00295 00296 for (i = 0; sr_hwcap_options[i].hwcap; i++) { 00297 if (sr_hwcap_options[i].hwcap == hwcap) 00298 return &sr_hwcap_options[i]; 00299 } 00300 00301 return NULL; 00302 } 00303 00304 /* Unnecessary level of indirection follows. */ 00305 00306 SR_PRIV int sr_source_remove(int fd) 00307 { 00308 return sr_session_source_remove(fd); 00309 } 00310 00311 SR_PRIV int sr_source_add(int fd, int events, int timeout, 00312 sr_receive_data_callback_t cb, void *cb_data) 00313 { 00314 return sr_session_source_add(fd, events, timeout, cb, cb_data); 00315 }