libsigrok/hwdriver.c

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/*
* This file is part of the sigrok project.
*
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* 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 "sigrok.h"
#include "sigrok-internal.h"
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/*
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* This enumerates which driver capabilities correspond to user-settable
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* options.
*/
/* TODO: This shouldn't be a global. */
SR_API struct sr_hwcap_option sr_hwcap_options[] = {
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{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"},
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{0, 0, NULL, NULL},
};
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#ifdef HAVE_LA_DEMO
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extern SR_PRIV struct sr_dev_driver demo_driver_info;
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#endif
#ifdef HAVE_LA_OLS
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extern SR_PRIV struct sr_dev_driver ols_driver_info;
#endif
#ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE
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extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
#endif
#ifdef HAVE_LA_ASIX_SIGMA
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extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info;
#endif
#ifdef HAVE_LA_CHRONOVU_LA8
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extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
#endif
#ifdef HAVE_LA_LINK_MSO19
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extern SR_PRIV struct sr_dev_driver link_mso19_driver_info;
#endif
#ifdef HAVE_LA_ALSA
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extern SR_PRIV struct sr_dev_driver alsa_driver_info;
#endif
#ifdef HAVE_LA_FX2LAFW
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extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
#endif
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static struct sr_dev_driver *drivers_list[] = {
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#ifdef HAVE_LA_DEMO
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&demo_driver_info,
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#endif
#ifdef HAVE_LA_OLS
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&ols_driver_info,
#endif
#ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE
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&zeroplus_logic_cube_driver_info,
#endif
#ifdef HAVE_LA_ASIX_SIGMA
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&asix_sigma_driver_info,
#endif
#ifdef HAVE_LA_CHRONOVU_LA8
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&chronovu_la8_driver_info,
#endif
#ifdef HAVE_LA_LINK_MSO19
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&link_mso19_driver_info,
#endif
#ifdef HAVE_LA_ALSA
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&alsa_driver_info,
#endif
#ifdef HAVE_LA_FX2LAFW
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&fx2lafw_driver_info,
#endif
NULL,
};
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/**
* Return the list of supported hardware drivers.
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*
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* @return Pointer to the NULL-terminated list of hardware driver pointers.
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*/
SR_API struct sr_dev_driver **sr_driver_list(void)
{
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return drivers_list;
}
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/**
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* Initialize a hardware driver.
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*
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* The specified driver is initialized, and all devices discovered by the
* driver are instantiated.
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*
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* @param driver The driver to initialize.
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*
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* @return The number of devices found and instantiated by the driver.
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*/
SR_API int sr_driver_init(struct sr_dev_driver *driver)
{
int num_devs, num_probes, i, j;
int num_initialized_devs = 0;
struct sr_dev *dev;
char **probe_names;
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sr_dbg("initializing %s driver", driver->name);
num_devs = driver->init(NULL);
for (i = 0; i < num_devs; i++) {
num_probes = GPOINTER_TO_INT(
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driver->dev_info_get(i, SR_DI_NUM_PROBES));
probe_names = (char **)driver->dev_info_get(i,
SR_DI_PROBE_NAMES);
if (!probe_names) {
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sr_warn("hwdriver: %s: driver %s does not return a "
"list of probe names", __func__, driver->name);
continue;
}
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dev = sr_dev_new(driver, i);
for (j = 0; j < num_probes; j++)
sr_dev_probe_add(dev, probe_names[j]);
num_initialized_devs++;
}
return num_initialized_devs;
}
SR_PRIV void sr_hw_cleanup_all(void)
{
int i;
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struct sr_dev_driver **drivers;
drivers = sr_driver_list();
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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,
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const char *vendor, const char *model, const char *version)
{
struct sr_dev_inst *sdi;
if (!(sdi = g_try_malloc(sizeof(struct sr_dev_inst)))) {
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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->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);
}
#ifdef HAVE_LIBUSB_1_0
SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
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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)))) {
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sr_err("hwdriver: %s: udi malloc failed", __func__);
return NULL;
}
udi->bus = bus;
udi->address = address;
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udi->devhdl = hdl; /* TODO: Check if this is NULL? */
return udi;
}
SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb)
{
/* Avoid compiler warnings. */
(void)usb;
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/* 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)))) {
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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);
}
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/**
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* Find out if a hardware driver has a specific capability.
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*
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* @param driver The hardware driver in which to search for the capability.
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* @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.
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*/
SR_API gboolean sr_driver_hwcap_exists(struct sr_dev_driver *driver, int hwcap)
{
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int *hwcaps, 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;
}
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for (i = 0; hwcaps[i]; i++) {
if (hwcaps[i] == hwcap)
return TRUE;
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}
return FALSE;
}
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/**
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* Get a hardware driver capability option.
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*
* @param hwcap The capability to get.
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*
* @return A pointer to a struct with information about the parameter, or NULL
* if the capability was not found.
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*/
SR_API struct sr_hwcap_option *sr_hw_hwcap_get(int hwcap)
{
int i;
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for (i = 0; sr_hwcap_options[i].hwcap; i++) {
if (sr_hwcap_options[i].hwcap == hwcap)
return &sr_hwcap_options[i];
}
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return NULL;
}
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/* Unnecessary level of indirection follows. */
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SR_PRIV int sr_source_remove(int fd)
{
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return sr_session_source_remove(fd);
}
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SR_PRIV int sr_source_add(int fd, int events, int timeout,
sr_receive_data_callback_t cb, void *cb_data)
{
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return sr_session_source_add(fd, events, timeout, cb, cb_data);
}