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jtag: linuxgpiod: finalize emulation of libgpiod v2 API for older versions

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This finalizes the work that has begun to emulate v2 API
for older libgpiod versions.

It also add the required autotools/pkg-config stuff to
detect the available libgpiod version.

Change-Id: I2c3a60ce607ed9601b01d22d5d9b8af953944941
Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/8226
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins
This commit is contained in:
Michael Heimpold
2024-04-20 19:01:30 +02:00
committed by Antonio Borneo
parent c92cc6b570
commit 9e2a11c2f2
2 changed files with 314 additions and 124 deletions
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17
configure.ac
View File

@@ -583,12 +583,19 @@ PKG_CHECK_MODULES([LIBFTDI], [libftdi1], [
PKG_CHECK_MODULES([LIBFTDI], [libftdi], [use_libftdi=yes], [use_libftdi=no])
])
PKG_CHECK_MODULES([LIBGPIOD], [libgpiod < 2.0], [
PKG_CHECK_MODULES([LIBGPIOD], [libgpiod >= 2.0] , [
use_libgpiod=yes
AC_DEFINE([HAVE_LIBGPIOD_V1], [1], [define if libgpiod is version v1.x])
PKG_CHECK_EXISTS([libgpiod >= 1.5],
[AC_DEFINE([HAVE_LIBGPIOD1_FLAGS_BIAS], [1], [define if libgpiod v1 has line request flags bias])])
], [use_libgpiod=no])
], [
PKG_CHECK_MODULES([LIBGPIOD], [libgpiod], [
use_libgpiod=yes
AC_DEFINE([HAVE_LIBGPIOD_V1], [1], [define if libgpiod is version v1.x])
PKG_CHECK_EXISTS([libgpiod >= 1.5],
[AC_DEFINE([HAVE_LIBGPIOD1_FLAGS_BIAS], [1], [define if libgpiod v1 has line request flags bias])])
], [
use_libgpiod=no
])
])
PKG_CHECK_MODULES([LIBJAYLINK], [libjaylink >= 0.2],
[use_libjaylink=yes], [use_libjaylink=no])

421
src/jtag/drivers/linuxgpiod.c
View File

@@ -39,8 +39,6 @@
#define GPIOD_LINE_BIAS_PULL_UP GPIOD_LINE_REQUEST_FLAG_BIAS_PULL_UP
#define GPIOD_LINE_BIAS_PULL_DOWN GPIOD_LINE_REQUEST_FLAG_BIAS_PULL_DOWN
#define gpiod_request_config gpiod_line_request_config
struct gpiod_line_settings {
int direction;
int value;
@@ -49,48 +47,20 @@ struct gpiod_line_settings {
int active_low;
};
struct gpiod_line_config {
unsigned int gpio_num;
struct gpiod_line_settings *line_settings;
};
static struct gpiod_line_settings *gpiod_line_settings_new(void)
{
static struct gpiod_line_settings my;
struct gpiod_line_settings *rv;
my = (struct gpiod_line_settings) { 0 };
rv = calloc(sizeof(struct gpiod_line_settings), 1);
if (!rv)
return NULL;
return &my;
}
static struct gpiod_line_config *gpiod_line_config_new(void)
{
static struct gpiod_line_config my;
my = (struct gpiod_line_config) { 0 };
return &my;
}
static struct gpiod_request_config *gpiod_request_config_new(void)
{
static struct gpiod_request_config my;
my = (struct gpiod_request_config) { NULL, 0, 0 };
return &my;
return rv;
}
static void gpiod_line_settings_free(struct gpiod_line_settings *settings)
{
}
static void gpiod_line_config_free(struct gpiod_line_config *config)
{
}
static void gpiod_request_config_free(struct gpiod_request_config *config)
{
free(settings);
}
static int gpiod_line_settings_set_direction(struct gpiod_line_settings *settings,
@@ -123,12 +93,6 @@ static void gpiod_line_settings_set_active_low(struct gpiod_line_settings *setti
settings->active_low = GPIOD_LINE_REQUEST_FLAG_ACTIVE_LOW;
}
static void gpiod_request_config_set_consumer(struct gpiod_request_config *config,
const char *consumer)
{
config->consumer = consumer;
}
#ifdef HAVE_LIBGPIOD1_FLAGS_BIAS
static int gpiod_line_settings_set_bias(struct gpiod_line_settings *settings, int bias)
@@ -145,18 +109,180 @@ static int gpiod_line_settings_set_bias(struct gpiod_line_settings *settings, in
if (bias == GPIOD_LINE_BIAS_DISABLED)
return 0;
LOG_WARNING("linuxgpiod: ignoring request for pull-%s: not supported by gpiod v%s",
LOG_WARNING("linuxgpiod: ignoring request for pull-%s: not supported by libgpiod v%s",
(bias == GPIOD_LINE_BIAS_PULL_UP) ? "up" : "down",
gpiod_version_string());
return -1;
return 0;
}
#endif /* HAVE_LIBGPIOD1_FLAGS_BIAS */
struct gpiod_line_config {
unsigned int gpio_num;
struct gpiod_line_settings *line_settings;
};
static struct gpiod_line_config *gpiod_line_config_new(void)
{
struct gpiod_line_config *rv;
rv = calloc(sizeof(struct gpiod_line_config), 1);
if (!rv)
return NULL;
return rv;
}
static void gpiod_line_config_free(struct gpiod_line_config *config)
{
free(config);
}
static int gpiod_line_config_add_line_settings(struct gpiod_line_config *config,
const unsigned int *offsets, size_t num_offsets, struct gpiod_line_settings *settings)
{
assert(num_offsets == 1);
config->gpio_num = *offsets;
config->line_settings = settings;
return 0;
}
struct gpiod_request_config {
const char *consumer;
};
static struct gpiod_request_config *gpiod_request_config_new(void)
{
struct gpiod_request_config *rv;
rv = calloc(sizeof(struct gpiod_request_config), 1);
if (!rv)
return NULL;
return rv;
}
static void gpiod_request_config_free(struct gpiod_request_config *config)
{
free(config);
}
static void gpiod_request_config_set_consumer(struct gpiod_request_config *config,
const char *consumer)
{
config->consumer = consumer;
}
struct gpiod_line_request {
struct gpiod_line *gpio_line;
struct gpiod_chip *chip;
struct gpiod_request_config *req_cfg;
struct gpiod_line_config *line_cfg;
};
static void gpiod_line_request_release(struct gpiod_line_request *request);
static struct gpiod_line_request *gpiod_chip_request_lines(struct gpiod_chip *chip,
struct gpiod_request_config *req_cfg, struct gpiod_line_config *line_cfg)
{
struct gpiod_line_request *line_req;
int rv, flags = 0;
assert(req_cfg);
line_req = calloc(sizeof(struct gpiod_line_request), 1);
if (!line_req)
return NULL;
line_req->gpio_line = gpiod_chip_get_line(chip, line_cfg->gpio_num);
if (!line_req->gpio_line) {
free(line_req);
return NULL;
}
/* remember stuff in case we need to reconfigure later */
line_req->chip = chip;
line_req->req_cfg = gpiod_request_config_new();
*line_req->req_cfg = *req_cfg;
line_req->line_cfg = line_cfg;
flags |= line_cfg->line_settings->drive;
flags |= line_cfg->line_settings->bias;
flags |= line_cfg->line_settings->active_low;
struct gpiod_line_request_config config = {
.consumer = line_req->req_cfg->consumer,
.request_type = line_cfg->line_settings->direction,
.flags = flags,
};
rv = gpiod_line_request(line_req->gpio_line, &config, line_cfg->line_settings->value);
if (rv < 0) {
gpiod_line_request_release(line_req);
return NULL;
}
return line_req;
}
static int gpiod_line_request_get_value(struct gpiod_line_request *request,
__attribute__((unused)) unsigned int offset)
{
return gpiod_line_get_value(request->gpio_line);
}
static int gpiod_line_request_set_value(struct gpiod_line_request *request,
__attribute__((unused)) unsigned int offset, int value)
{
return gpiod_line_set_value(request->gpio_line, value);
}
static void gpiod_line_request_release(struct gpiod_line_request *request)
{
gpiod_request_config_free(request->req_cfg);
gpiod_line_release(request->gpio_line);
free(request);
}
static int gpiod_line_request_reconfigure_lines(struct gpiod_line_request *request,
struct gpiod_line_config *line_cfg)
{
int rv, flags = 0;
/* in libgpiod v1 we have to release the line and re-aquire it */
gpiod_line_release(request->gpio_line);
request->gpio_line = gpiod_chip_get_line(request->chip, request->line_cfg->gpio_num);
if (!request->gpio_line)
return -1;
flags |= line_cfg->line_settings->drive;
flags |= line_cfg->line_settings->bias;
flags |= line_cfg->line_settings->active_low;
struct gpiod_line_request_config config = {
.consumer = request->req_cfg->consumer,
.request_type = line_cfg->line_settings->direction,
.flags = flags,
};
rv = gpiod_line_request(request->gpio_line, &config, line_cfg->line_settings->value);
if (rv < 0)
return -1;
/* remember updated line_cfg */
request->line_cfg = line_cfg;
return 0;
}
#endif /* HAVE_LIBGPIOD_V1 */
static struct gpiod_chip *gpiod_chip[ADAPTER_GPIO_IDX_NUM] = {};
static struct gpiod_line *gpiod_line[ADAPTER_GPIO_IDX_NUM] = {};
static struct gpiod_line_settings *gpiod_line_settings[ADAPTER_GPIO_IDX_NUM] = {};
static struct gpiod_line_config *gpiod_line_config[ADAPTER_GPIO_IDX_NUM] = {};
static struct gpiod_line_request *gpiod_line_req[ADAPTER_GPIO_IDX_NUM] = {};
static int last_swclk;
static int last_swdio;
@@ -165,6 +291,20 @@ static bool swdio_input;
static const struct adapter_gpio_config *adapter_gpio_config;
/* Helper to get/set a single line */
static int linuxgpiod_line_get_value(enum adapter_gpio_config_index idx)
{
return gpiod_line_request_get_value(gpiod_line_req[idx],
adapter_gpio_config[idx].gpio_num);
}
static int linuxgpiod_line_set_value(enum adapter_gpio_config_index idx, int value)
{
return gpiod_line_request_set_value(gpiod_line_req[idx],
adapter_gpio_config[idx].gpio_num,
value);
}
/*
* Helper function to determine if gpio config is valid
*
@@ -182,7 +322,7 @@ static enum bb_value linuxgpiod_read(void)
{
int retval;
retval = gpiod_line_get_value(gpiod_line[ADAPTER_GPIO_IDX_TDO]);
retval = linuxgpiod_line_get_value(ADAPTER_GPIO_IDX_TDO);
if (retval < 0) {
LOG_WARNING("reading tdo failed");
return 0;
@@ -215,20 +355,20 @@ static int linuxgpiod_write(int tck, int tms, int tdi)
}
if (tdi != last_tdi) {
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_TDI], tdi);
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_TDI, tdi);
if (retval < 0)
LOG_WARNING("writing tdi failed");
}
if (tms != last_tms) {
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_TMS], tms);
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_TMS, tms);
if (retval < 0)
LOG_WARNING("writing tms failed");
}
/* write clk last */
if (tck != last_tck) {
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_TCK], tck);
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_TCK, tck);
if (retval < 0)
LOG_WARNING("writing tck failed");
}
@@ -244,7 +384,7 @@ static int linuxgpiod_swdio_read(void)
{
int retval;
retval = gpiod_line_get_value(gpiod_line[ADAPTER_GPIO_IDX_SWDIO]);
retval = linuxgpiod_line_get_value(ADAPTER_GPIO_IDX_SWDIO);
if (retval < 0) {
LOG_WARNING("Fail read swdio");
return 0;
@@ -257,30 +397,54 @@ static void linuxgpiod_swdio_drive(bool is_output)
{
int retval;
/*
* FIXME: change direction requires release and re-require the line
* https://stackoverflow.com/questions/58735140/
* this would change in future libgpiod
*/
gpiod_line_release(gpiod_line[ADAPTER_GPIO_IDX_SWDIO]);
if (is_output) {
if (gpiod_line[ADAPTER_GPIO_IDX_SWDIO_DIR]) {
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_SWDIO_DIR], 1);
if (gpiod_line_req[ADAPTER_GPIO_IDX_SWDIO_DIR]) {
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_SWDIO_DIR, 1);
if (retval < 0)
LOG_WARNING("Fail set swdio_dir");
LOG_WARNING("Failed to set swdio_dir=1");
}
retval = gpiod_line_request_output(gpiod_line[ADAPTER_GPIO_IDX_SWDIO], "OpenOCD", 1);
retval = gpiod_line_settings_set_direction(gpiod_line_settings[ADAPTER_GPIO_IDX_SWDIO],
GPIOD_LINE_DIRECTION_OUTPUT);
if (retval < 0)
LOG_WARNING("Fail request_output line swdio");
LOG_WARNING("Failed to set new direction of swdio");
retval = gpiod_line_settings_set_output_value(gpiod_line_settings[ADAPTER_GPIO_IDX_SWDIO],
GPIOD_LINE_VALUE_ACTIVE);
if (retval < 0)
LOG_WARNING("Failed to set output value of swdio");
retval = gpiod_line_config_add_line_settings(gpiod_line_config[ADAPTER_GPIO_IDX_SWDIO],
&adapter_gpio_config[ADAPTER_GPIO_IDX_SWDIO].gpio_num, 1,
gpiod_line_settings[ADAPTER_GPIO_IDX_SWDIO]);
if (retval < 0)
LOG_WARNING("Failed to apply output configuration to swdio");
retval = gpiod_line_request_reconfigure_lines(gpiod_line_req[ADAPTER_GPIO_IDX_SWDIO],
gpiod_line_config[ADAPTER_GPIO_IDX_SWDIO]);
if (retval < 0)
LOG_WARNING("Failed to switch swdio to output");
} else {
retval = gpiod_line_request_input(gpiod_line[ADAPTER_GPIO_IDX_SWDIO], "OpenOCD");
retval = gpiod_line_settings_set_direction(gpiod_line_settings[ADAPTER_GPIO_IDX_SWDIO],
GPIOD_LINE_DIRECTION_INPUT);
if (retval < 0)
LOG_WARNING("Fail request_input line swdio");
if (gpiod_line[ADAPTER_GPIO_IDX_SWDIO_DIR]) {
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_SWDIO_DIR], 0);
LOG_WARNING("Failed to switch swdio to output");
retval = gpiod_line_config_add_line_settings(gpiod_line_config[ADAPTER_GPIO_IDX_SWDIO],
&adapter_gpio_config[ADAPTER_GPIO_IDX_SWDIO].gpio_num, 1,
gpiod_line_settings[ADAPTER_GPIO_IDX_SWDIO]);
if (retval < 0)
LOG_WARNING("Failed to apply input configuration to swdio");
retval = gpiod_line_request_reconfigure_lines(gpiod_line_req[ADAPTER_GPIO_IDX_SWDIO],
gpiod_line_config[ADAPTER_GPIO_IDX_SWDIO]);
if (retval < 0)
LOG_WARNING("Failed to switch swdio to input");
if (gpiod_line_req[ADAPTER_GPIO_IDX_SWDIO_DIR]) {
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_SWDIO_DIR, 0);
if (retval < 0)
LOG_WARNING("Fail set swdio_dir");
LOG_WARNING("Failed to set swdio_dir=0");
}
}
@@ -294,7 +458,7 @@ static int linuxgpiod_swd_write(int swclk, int swdio)
if (!swdio_input) {
if (!last_stored || swdio != last_swdio) {
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_SWDIO], swdio);
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_SWDIO, swdio);
if (retval < 0)
LOG_WARNING("Fail set swdio");
}
@@ -302,7 +466,7 @@ static int linuxgpiod_swd_write(int swclk, int swdio)
/* write swclk last */
if (!last_stored || swclk != last_swclk) {
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_SWCLK], swclk);
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_SWCLK, swclk);
if (retval < 0)
LOG_WARNING("Fail set swclk");
}
@@ -321,7 +485,7 @@ static int linuxgpiod_blink(bool on)
if (!is_gpio_config_valid(ADAPTER_GPIO_IDX_LED))
return ERROR_OK;
retval = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_LED], on ? 1 : 0);
retval = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_LED, on);
if (retval < 0)
LOG_WARNING("Fail set led");
return retval;
@@ -348,17 +512,17 @@ static int linuxgpiod_reset(int trst, int srst)
LOG_DEBUG("linuxgpiod_reset");
/*
* active low behaviour handled by "adaptor gpio" command and
* active low behavior handled by "adaptor gpio" command and
* GPIOD_LINE_REQUEST_FLAG_ACTIVE_LOW flag when requesting the line.
*/
if (gpiod_line[ADAPTER_GPIO_IDX_SRST]) {
retval1 = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_SRST], srst);
if (gpiod_line_req[ADAPTER_GPIO_IDX_SRST]) {
retval1 = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_SRST, srst);
if (retval1 < 0)
LOG_WARNING("set srst value failed");
}
if (gpiod_line[ADAPTER_GPIO_IDX_TRST]) {
retval2 = gpiod_line_set_value(gpiod_line[ADAPTER_GPIO_IDX_TRST], trst);
if (gpiod_line_req[ADAPTER_GPIO_IDX_TRST]) {
retval2 = linuxgpiod_line_set_value(ADAPTER_GPIO_IDX_TRST, trst);
if (retval2 < 0)
LOG_WARNING("set trst value failed");
}
@@ -390,9 +554,17 @@ static bool linuxgpiod_swd_mode_possible(void)
static inline void helper_release(enum adapter_gpio_config_index idx)
{
if (gpiod_line[idx]) {
gpiod_line_release(gpiod_line[idx]);
gpiod_line[idx] = NULL;
if (gpiod_line_req[idx]) {
gpiod_line_request_release(gpiod_line_req[idx]);
gpiod_line_req[idx] = NULL;
}
if (gpiod_line_config[idx]) {
gpiod_line_config_free(gpiod_line_config[idx]);
gpiod_line_config[idx] = NULL;
}
if (gpiod_line_settings[idx]) {
gpiod_line_settings_free(gpiod_line_settings[idx]);
gpiod_line_settings[idx] = NULL;
}
if (gpiod_chip[idx]) {
gpiod_chip_close(gpiod_chip[idx]);
@@ -411,97 +583,108 @@ static int linuxgpiod_quit(void)
static int helper_get_line(enum adapter_gpio_config_index idx)
{
struct gpiod_request_config *req_cfg = NULL;
char chip_path[24];
int rv = 0;
if (!is_gpio_config_valid(idx))
return ERROR_OK;
int flags = 0, retval;
snprintf(chip_path, sizeof(chip_path), "/dev/gpiochip%u", adapter_gpio_config[idx].chip_num);
gpiod_chip[idx] = gpiod_chip_open(chip_path);
if (!gpiod_chip[idx]) {
LOG_ERROR("Cannot open LinuxGPIOD chip %d for %s", adapter_gpio_config[idx].chip_num,
adapter_gpio_get_name(idx));
return ERROR_JTAG_INIT_FAILED;
}
gpiod_line[idx] = gpiod_chip_get_line(gpiod_chip[idx], adapter_gpio_config[idx].gpio_num);
if (!gpiod_line[idx]) {
LOG_ERROR("Error get line %s", adapter_gpio_get_name(idx));
return ERROR_JTAG_INIT_FAILED;
}
gpiod_line_settings[idx] = gpiod_line_settings_new();
gpiod_line_config[idx] = gpiod_line_config_new();
req_cfg = gpiod_request_config_new();
struct gpiod_line_settings *line_settings = gpiod_line_settings_new();
struct gpiod_line_config *line_config = gpiod_line_config_new();
struct gpiod_request_config *req_cfg = gpiod_request_config_new();
if (!line_settings || !line_config || !req_cfg) {
if (!gpiod_line_settings[idx] || !gpiod_line_config[idx] || !req_cfg) {
LOG_ERROR("Cannot configure LinuxGPIOD line for %s", adapter_gpio_get_name(idx));
retval = ERROR_JTAG_INIT_FAILED;
goto err_out;
gpiod_request_config_free(req_cfg);
return ERROR_JTAG_INIT_FAILED;
}
gpiod_request_config_set_consumer(req_cfg, "OpenOCD");
switch (adapter_gpio_config[idx].init_state) {
case ADAPTER_GPIO_INIT_STATE_INPUT:
gpiod_line_settings_set_direction(line_settings, GPIOD_LINE_DIRECTION_INPUT);
rv = gpiod_line_settings_set_direction(gpiod_line_settings[idx], GPIOD_LINE_DIRECTION_INPUT);
break;
case ADAPTER_GPIO_INIT_STATE_INACTIVE:
gpiod_line_settings_set_direction(line_settings, GPIOD_LINE_DIRECTION_OUTPUT);
gpiod_line_settings_set_output_value(line_settings, GPIOD_LINE_VALUE_INACTIVE);
rv = gpiod_line_settings_set_direction(gpiod_line_settings[idx], GPIOD_LINE_DIRECTION_OUTPUT);
rv |= gpiod_line_settings_set_output_value(gpiod_line_settings[idx], GPIOD_LINE_VALUE_INACTIVE);
break;
case ADAPTER_GPIO_INIT_STATE_ACTIVE:
gpiod_line_settings_set_direction(line_settings, GPIOD_LINE_DIRECTION_OUTPUT);
gpiod_line_settings_set_output_value(line_settings, GPIOD_LINE_VALUE_ACTIVE);
rv = gpiod_line_settings_set_direction(gpiod_line_settings[idx], GPIOD_LINE_DIRECTION_OUTPUT);
rv |= gpiod_line_settings_set_output_value(gpiod_line_settings[idx], GPIOD_LINE_VALUE_ACTIVE);
break;
}
if (rv < 0) {
LOG_ERROR("Error while configuring LinuxGPIOD line init state for %s", adapter_gpio_get_name(idx));
gpiod_request_config_free(req_cfg);
return ERROR_JTAG_INIT_FAILED;
}
switch (adapter_gpio_config[idx].drive) {
case ADAPTER_GPIO_DRIVE_MODE_PUSH_PULL:
gpiod_line_settings_set_drive(line_settings, GPIOD_LINE_DRIVE_PUSH_PULL);
rv = gpiod_line_settings_set_drive(gpiod_line_settings[idx], GPIOD_LINE_DRIVE_PUSH_PULL);
break;
case ADAPTER_GPIO_DRIVE_MODE_OPEN_DRAIN:
gpiod_line_settings_set_drive(line_settings, GPIOD_LINE_DRIVE_OPEN_DRAIN);
rv = gpiod_line_settings_set_drive(gpiod_line_settings[idx], GPIOD_LINE_DRIVE_OPEN_DRAIN);
break;
case ADAPTER_GPIO_DRIVE_MODE_OPEN_SOURCE:
gpiod_line_settings_set_drive(line_settings, GPIOD_LINE_DRIVE_OPEN_SOURCE);
rv = gpiod_line_settings_set_drive(gpiod_line_settings[idx], GPIOD_LINE_DRIVE_OPEN_SOURCE);
break;
}
if (rv < 0) {
LOG_ERROR("Error while configuring LinuxGPIOD line driving for %s", adapter_gpio_get_name(idx));
gpiod_request_config_free(req_cfg);
return ERROR_JTAG_INIT_FAILED;
}
switch (adapter_gpio_config[idx].pull) {
case ADAPTER_GPIO_PULL_NONE:
gpiod_line_settings_set_bias(line_settings, GPIOD_LINE_BIAS_DISABLED);
rv = gpiod_line_settings_set_bias(gpiod_line_settings[idx], GPIOD_LINE_BIAS_DISABLED);
break;
case ADAPTER_GPIO_PULL_UP:
gpiod_line_settings_set_bias(line_settings, GPIOD_LINE_BIAS_PULL_UP);
rv = gpiod_line_settings_set_bias(gpiod_line_settings[idx], GPIOD_LINE_BIAS_PULL_UP);
break;
case ADAPTER_GPIO_PULL_DOWN:
gpiod_line_settings_set_bias(line_settings, GPIOD_LINE_BIAS_PULL_DOWN);
rv = gpiod_line_settings_set_bias(gpiod_line_settings[idx], GPIOD_LINE_BIAS_PULL_DOWN);
break;
}
gpiod_line_settings_set_active_low(line_settings, adapter_gpio_config[idx].active_low);
req_cfg->request_type = line_settings->direction;
req_cfg->flags = flags | line_settings->drive | line_settings->bias | line_settings->active_low;
retval = gpiod_line_request(gpiod_line[idx], req_cfg, line_settings->value);
if (retval < 0) {
LOG_ERROR("Error requesting gpio line %s", adapter_gpio_get_name(idx));
retval = ERROR_JTAG_INIT_FAILED;
goto err_out;
if (rv < 0) {
LOG_ERROR("Error while configuring LinuxGPIOD line biasing for %s", adapter_gpio_get_name(idx));
gpiod_request_config_free(req_cfg);
return ERROR_JTAG_INIT_FAILED;
}
retval = ERROR_OK;
gpiod_line_settings_set_active_low(gpiod_line_settings[idx], adapter_gpio_config[idx].active_low);
rv = gpiod_line_config_add_line_settings(gpiod_line_config[idx],
&adapter_gpio_config[idx].gpio_num, 1,
gpiod_line_settings[idx]);
if (rv < 0) {
LOG_ERROR("Error configuring gpio line %s", adapter_gpio_get_name(idx));
gpiod_request_config_free(req_cfg);
return ERROR_JTAG_INIT_FAILED;
}
gpiod_line_req[idx] = gpiod_chip_request_lines(gpiod_chip[idx], req_cfg, gpiod_line_config[idx]);
err_out:
gpiod_line_settings_free(line_settings);
gpiod_line_config_free(line_config);
gpiod_request_config_free(req_cfg);
return retval;
if (!gpiod_line_req[idx]) {
LOG_ERROR("Error requesting gpio line %s", adapter_gpio_get_name(idx));
return ERROR_JTAG_INIT_FAILED;
}
return ERROR_OK;
}
static int linuxgpiod_init(void)