libsigrok/hwdriver.c

360 lines
8.8 KiB
C

/*
* This file is part of the sigrok project.
*
* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
*
* 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 3 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
/*
* This enumerates which driver capabilities correspond to user-settable
* options.
*/
/* TODO: This shouldn't be a global. */
SR_API struct sr_hwcap_option sr_hwcap_options[] = {
/* Driver scanning options. */
{SR_HWOPT_MODEL, SR_T_KEYVALUE, "Model", "model"},
{SR_HWOPT_CONN, SR_T_CHAR, "Connection", "conn"},
{SR_HWOPT_SERIALCOMM, SR_T_CHAR, "Serial communication", "serialcomm"},
/* Device instance options. */
{SR_HWCAP_SAMPLERATE, SR_T_UINT64, "Sample rate", "samplerate"},
{SR_HWCAP_CAPTURE_RATIO, SR_T_UINT64, "Pre-trigger capture ratio", "captureratio"},
{SR_HWCAP_PATTERN_MODE, SR_T_CHAR, "Pattern generator mode", "pattern"},
{SR_HWCAP_RLE, SR_T_BOOL, "Run Length Encoding", "rle"},
{SR_HWCAP_TRIGGER_SLOPE, SR_T_UINT64, "Trigger slope", "triggerslope"},
{SR_HWCAP_TRIGGER_SOURCE, SR_T_CHAR, "Trigger source", "triggersource"},
{SR_HWCAP_HORIZ_TRIGGERPOS, SR_T_FLOAT, "Horizontal trigger position",
"horiz_triggerpos"},
{SR_HWCAP_BUFFERSIZE, SR_T_UINT64, "Buffer size", "buffersize"},
{SR_HWCAP_TIMEBASE, SR_T_RATIONAL_PERIOD, "Time base", "timebase"},
{SR_HWCAP_FILTER, SR_T_CHAR, "Filter targets", "filter"},
{SR_HWCAP_VDIV, SR_T_RATIONAL_VOLT, "Volts/div", "vdiv"},
{SR_HWCAP_COUPLING, SR_T_CHAR, "Coupling", "coupling"},
{0, 0, NULL, NULL},
};
#ifdef HAVE_LA_DEMO
extern SR_PRIV struct sr_dev_driver demo_driver_info;
#endif
#ifdef HAVE_LA_OLS
extern SR_PRIV struct sr_dev_driver ols_driver_info;
#endif
#ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE
extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
#endif
#ifdef HAVE_LA_ASIX_SIGMA
extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info;
#endif
#ifdef HAVE_LA_CHRONOVU_LA8
extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
#endif
#ifdef HAVE_LA_LINK_MSO19
extern SR_PRIV struct sr_dev_driver link_mso19_driver_info;
#endif
#ifdef HAVE_LA_ALSA
extern SR_PRIV struct sr_dev_driver alsa_driver_info;
#endif
#ifdef HAVE_LA_FX2LAFW
extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
#endif
#ifdef HAVE_HW_HANTEK_DSO
extern SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
#endif
#ifdef HAVE_HW_GENERICDMM
extern SR_PRIV struct sr_dev_driver genericdmm_driver_info;
#endif
static struct sr_dev_driver *drivers_list[] = {
#ifdef HAVE_LA_DEMO
&demo_driver_info,
#endif
#ifdef HAVE_LA_OLS
&ols_driver_info,
#endif
#ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE
&zeroplus_logic_cube_driver_info,
#endif
#ifdef HAVE_LA_ASIX_SIGMA
&asix_sigma_driver_info,
#endif
#ifdef HAVE_LA_CHRONOVU_LA8
&chronovu_la8_driver_info,
#endif
#ifdef HAVE_LA_LINK_MSO19
&link_mso19_driver_info,
#endif
#ifdef HAVE_LA_ALSA
&alsa_driver_info,
#endif
#ifdef HAVE_LA_FX2LAFW
&fx2lafw_driver_info,
#endif
#ifdef HAVE_HW_HANTEK_DSO
&hantek_dso_driver_info,
#endif
#ifdef HAVE_HW_GENERICDMM
&genericdmm_driver_info,
#endif
NULL,
};
/**
* Return the list of supported hardware drivers.
*
* @return Pointer to the NULL-terminated list of hardware driver pointers.
*/
SR_API struct sr_dev_driver **sr_driver_list(void)
{
return drivers_list;
}
/**
* Initialize a hardware driver.
*
* @param driver The driver to initialize.
*
* @return SR_OK if all went well, or an error code otherwise.
*/
SR_API int sr_driver_init(struct sr_dev_driver *driver)
{
if (driver->init)
return driver->init();
return SR_OK;
}
/**
* Tell a hardware driver to scan for devices.
*
* @param driver The driver.
* @param options A list of struct sr_hwopt options to pass to the driver's
* scanner.
*
* @return A GSList * of struct sr_dev_inst, or NULL if no devices were found.
* This list must be freed by the caller, but without freeing the data
* pointed to in the list.
*/
SR_API GSList *sr_driver_scan(struct sr_dev_driver *driver, GSList *options)
{
if (driver->scan)
return driver->scan(options);
return NULL;
}
SR_PRIV void sr_hw_cleanup_all(void)
{
int i;
struct sr_dev_driver **drivers;
drivers = sr_driver_list();
for (i = 0; drivers[i]; i++) {
if (drivers[i]->cleanup)
drivers[i]->cleanup();
}
}
SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int index, int status,
const char *vendor, const char *model, const char *version)
{
struct sr_dev_inst *sdi;
if (!(sdi = g_try_malloc(sizeof(struct sr_dev_inst)))) {
sr_err("hwdriver: %s: sdi malloc failed", __func__);
return NULL;
}
sdi->index = index;
sdi->status = status;
sdi->inst_type = -1;
sdi->vendor = vendor ? g_strdup(vendor) : NULL;
sdi->model = model ? g_strdup(model) : NULL;
sdi->version = version ? g_strdup(version) : NULL;
sdi->probes = NULL;
sdi->priv = NULL;
return sdi;
}
SR_PRIV struct sr_dev_inst *sr_dev_inst_get(GSList *dev_insts, int dev_index)
{
struct sr_dev_inst *sdi;
GSList *l;
for (l = dev_insts; l; l = l->next) {
sdi = (struct sr_dev_inst *)(l->data);
if (sdi->index == dev_index)
return sdi;
}
sr_warn("could not find device index %d instance", dev_index);
return NULL;
}
SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi)
{
g_free(sdi->priv);
g_free(sdi->vendor);
g_free(sdi->model);
g_free(sdi->version);
g_free(sdi);
}
SR_PRIV struct sr_probe *sr_probe_new(int index, int type,
gboolean enabled, const char *name)
{
struct sr_probe *probe;
if (!(probe = g_try_malloc0(sizeof(struct sr_probe)))) {
sr_err("hwdriver: probe malloc failed");
return NULL;
}
probe->index = index;
probe->type = type;
probe->enabled = enabled;
if (name)
probe->name = g_strdup(name);
return probe;
}
#ifdef HAVE_LIBUSB_1_0
SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
uint8_t address, struct libusb_device_handle *hdl)
{
struct sr_usb_dev_inst *udi;
if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) {
sr_err("hwdriver: %s: udi malloc failed", __func__);
return NULL;
}
udi->bus = bus;
udi->address = address;
udi->devhdl = hdl;
return udi;
}
SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb)
{
/* Avoid compiler warnings. */
(void)usb;
/* Nothing to do for this device instance type. */
}
#endif
SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port,
int fd)
{
struct sr_serial_dev_inst *serial;
if (!(serial = g_try_malloc(sizeof(struct sr_serial_dev_inst)))) {
sr_err("hwdriver: %s: serial malloc failed", __func__);
return NULL;
}
serial->port = g_strdup(port);
serial->fd = fd;
return serial;
}
SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial)
{
g_free(serial->port);
}
/**
* Find out if a hardware driver has a specific capability.
*
* @param driver The hardware driver in which to search for the capability.
* @param hwcap The capability to find in the list.
*
* @return TRUE if the specified capability exists in the specified driver,
* FALSE otherwise. Also, if 'driver' is NULL or the respective driver
* returns an invalid capability list, FALSE is returned.
*/
SR_API gboolean sr_driver_hwcap_exists(struct sr_dev_driver *driver, int hwcap)
{
const int *hwcaps;
int i;
if (!driver) {
sr_err("hwdriver: %s: driver was NULL", __func__);
return FALSE;
}
if (!(hwcaps = driver->hwcap_get_all())) {
sr_err("hwdriver: %s: hwcap_get_all() returned NULL", __func__);
return FALSE;
}
for (i = 0; hwcaps[i]; i++) {
if (hwcaps[i] == hwcap)
return TRUE;
}
return FALSE;
}
/**
* Get a hardware driver capability option.
*
* @param hwcap The capability to get.
*
* @return A pointer to a struct with information about the parameter, or NULL
* if the capability was not found.
*/
SR_API const struct sr_hwcap_option *sr_hw_hwcap_get(int hwcap)
{
int i;
for (i = 0; sr_hwcap_options[i].hwcap; i++) {
if (sr_hwcap_options[i].hwcap == hwcap)
return &sr_hwcap_options[i];
}
return NULL;
}
/* Unnecessary level of indirection follows. */
SR_PRIV int sr_source_remove(int fd)
{
return sr_session_source_remove(fd);
}
SR_PRIV int sr_source_add(int fd, int events, int timeout,
sr_receive_data_callback_t cb, void *cb_data)
{
return sr_session_source_add(fd, events, timeout, cb, cb_data);
}