static int srst_gpio = -1;
static int swclk_gpio = -1;
static int swdio_gpio = -1;
+static int led_gpio = -1;
static int gpiochip = -1;
static struct gpiod_chip *gpiod_chip;
static struct gpiod_line *gpiod_swclk;
static struct gpiod_line *gpiod_swdio;
static struct gpiod_line *gpiod_srst;
+static struct gpiod_line *gpiod_led;
static int last_swclk;
static int last_swdio;
return ERROR_OK;
}
+static int linuxgpiod_blink(int on)
+{
+ int retval;
+
+ if (!gpiod_led)
+ return ERROR_OK;
+
+ retval = gpiod_line_set_value(gpiod_led, on);
+ if (retval < 0)
+ LOG_WARNING("Fail set led");
+ return retval;
+}
+
static struct bitbang_interface linuxgpiod_bitbang = {
.read = linuxgpiod_read,
.write = linuxgpiod_write,
.swdio_read = linuxgpiod_swdio_read,
.swdio_drive = linuxgpiod_swdio_drive,
.swd_write = linuxgpiod_swd_write,
- .blink = NULL,
+ .blink = linuxgpiod_blink,
};
/*
LOG_DEBUG("linuxgpiod_reset");
/* assume active low */
- if (gpiod_srst != NULL) {
+ if (gpiod_srst) {
retval1 = gpiod_line_set_value(gpiod_srst, srst ? 0 : 1);
if (retval1 < 0)
LOG_WARNING("set srst value failed");
}
/* assume active low */
- if (gpiod_trst != NULL) {
+ if (gpiod_trst) {
retval2 = gpiod_line_set_value(gpiod_trst, trst ? 0 : 1);
if (retval2 < 0)
LOG_WARNING("set trst value failed");
static int linuxgpiod_quit(void)
{
+ helper_release(gpiod_led);
helper_release(gpiod_srst);
helper_release(gpiod_swdio);
helper_release(gpiod_swclk);
return ERROR_OK;
}
-static struct gpiod_line *helper_get_input_line(const char *label, unsigned int offset)
+static struct gpiod_line *helper_get_line(const char *label, unsigned int offset, int val, int dir, int flags)
{
struct gpiod_line *line;
int retval;
line = gpiod_chip_get_line(gpiod_chip, offset);
- if (line == NULL) {
+ if (!line) {
LOG_ERROR("Error get line %s", label);
return NULL;
}
- retval = gpiod_line_request_input(line, "OpenOCD");
+ struct gpiod_line_request_config config = {
+ .consumer = "OpenOCD",
+ .request_type = dir,
+ .flags = flags,
+ };
+
+ retval = gpiod_line_request(line, &config, val);
if (retval < 0) {
- LOG_ERROR("Error request_input line %s", label);
+ LOG_ERROR("Error requesting gpio line %s", label);
return NULL;
}
return line;
}
-static struct gpiod_line *helper_get_output_line(const char *label, unsigned int offset, int val)
+static struct gpiod_line *helper_get_input_line(const char *label, unsigned int offset)
{
- struct gpiod_line *line;
- int retval;
-
- line = gpiod_chip_get_line(gpiod_chip, offset);
- if (line == NULL) {
- LOG_ERROR("Error get line %s", label);
- return NULL;
- }
+ return helper_get_line(label, offset, 0, GPIOD_LINE_REQUEST_DIRECTION_INPUT, 0);
+}
- retval = gpiod_line_request_output(line, "OpenOCD", val);
- if (retval < 0) {
- LOG_ERROR("Error request_output line %s", label);
- return NULL;
- }
+static struct gpiod_line *helper_get_output_line(const char *label, unsigned int offset, int val)
+{
+ return helper_get_line(label, offset, val, GPIOD_LINE_REQUEST_DIRECTION_OUTPUT, 0);
+}
- return line;
+static struct gpiod_line *helper_get_open_drain_output_line(const char *label, unsigned int offset, int val)
+{
+ return helper_get_line(label, offset, val, GPIOD_LINE_REQUEST_DIRECTION_OUTPUT, GPIOD_LINE_REQUEST_FLAG_OPEN_DRAIN);
}
static int linuxgpiod_init(void)
bitbang_interface = &linuxgpiod_bitbang;
gpiod_chip = gpiod_chip_open_by_number(gpiochip);
- if (gpiod_chip == NULL) {
+ if (!gpiod_chip) {
LOG_ERROR("Cannot open LinuxGPIOD gpiochip %d", gpiochip);
return ERROR_JTAG_INIT_FAILED;
}
}
gpiod_tdo = helper_get_input_line("tdo", tdo_gpio);
- if (gpiod_tdo == NULL)
+ if (!gpiod_tdo)
goto out_error;
gpiod_tdi = helper_get_output_line("tdi", tdi_gpio, 0);
- if (gpiod_tdi == NULL)
+ if (!gpiod_tdi)
goto out_error;
gpiod_tck = helper_get_output_line("tck", tck_gpio, 0);
- if (gpiod_tck == NULL)
+ if (!gpiod_tck)
goto out_error;
gpiod_tms = helper_get_output_line("tms", tms_gpio, 1);
- if (gpiod_tms == NULL)
+ if (!gpiod_tms)
goto out_error;
if (is_gpio_valid(trst_gpio)) {
gpiod_trst = helper_get_output_line("trst", trst_gpio, 1);
- if (gpiod_trst == NULL)
+ if (!gpiod_trst)
goto out_error;
}
}
}
gpiod_swclk = helper_get_output_line("swclk", swclk_gpio, 1);
- if (gpiod_swclk == NULL)
+ if (!gpiod_swclk)
goto out_error;
gpiod_swdio = helper_get_output_line("swdio", swdio_gpio, 1);
- if (gpiod_swdio == NULL)
+ if (!gpiod_swdio)
goto out_error;
}
if (is_gpio_valid(srst_gpio)) {
- gpiod_srst = helper_get_output_line("srst", srst_gpio, 1);
- if (gpiod_srst == NULL)
+ if (jtag_get_reset_config() & RESET_SRST_PUSH_PULL)
+ gpiod_srst = helper_get_output_line("srst", srst_gpio, 1);
+ else
+ gpiod_srst = helper_get_open_drain_output_line("srst", srst_gpio, 1);
+
+ if (!gpiod_srst)
+ goto out_error;
+ }
+
+ if (is_gpio_valid(led_gpio)) {
+ gpiod_led = helper_get_output_line("led", led_gpio, 0);
+ if (!gpiod_led)
goto out_error;
}
return ERROR_OK;
}
+COMMAND_HANDLER(linuxgpiod_handle_gpionum_led)
+{
+ if (CMD_ARGC == 1)
+ COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], led_gpio);
+
+ command_print(CMD, "LinuxGPIOD num: led = %d", led_gpio);
+ return ERROR_OK;
+}
+
COMMAND_HANDLER(linuxgpiod_handle_gpiochip)
{
if (CMD_ARGC == 1)
return ERROR_OK;
}
-static const struct command_registration linuxgpiod_command_handlers[] = {
+static const struct command_registration linuxgpiod_subcommand_handlers[] = {
{
- .name = "linuxgpiod_jtag_nums",
+ .name = "jtag_nums",
.handler = linuxgpiod_handle_jtag_gpionums,
.mode = COMMAND_CONFIG,
.help = "gpio numbers for tck, tms, tdi, tdo. (in that order)",
.usage = "tck tms tdi tdo",
},
{
- .name = "linuxgpiod_tck_num",
+ .name = "tck_num",
.handler = linuxgpiod_handle_jtag_gpionum_tck,
.mode = COMMAND_CONFIG,
.help = "gpio number for tck.",
.usage = "tck",
},
{
- .name = "linuxgpiod_tms_num",
+ .name = "tms_num",
.handler = linuxgpiod_handle_jtag_gpionum_tms,
.mode = COMMAND_CONFIG,
.help = "gpio number for tms.",
.usage = "tms",
},
{
- .name = "linuxgpiod_tdo_num",
+ .name = "tdo_num",
.handler = linuxgpiod_handle_jtag_gpionum_tdo,
.mode = COMMAND_CONFIG,
.help = "gpio number for tdo.",
.usage = "tdo",
},
{
- .name = "linuxgpiod_tdi_num",
+ .name = "tdi_num",
.handler = linuxgpiod_handle_jtag_gpionum_tdi,
.mode = COMMAND_CONFIG,
.help = "gpio number for tdi.",
.usage = "tdi",
},
{
- .name = "linuxgpiod_srst_num",
+ .name = "srst_num",
.handler = linuxgpiod_handle_jtag_gpionum_srst,
.mode = COMMAND_CONFIG,
.help = "gpio number for srst.",
.usage = "srst",
},
{
- .name = "linuxgpiod_trst_num",
+ .name = "trst_num",
.handler = linuxgpiod_handle_jtag_gpionum_trst,
.mode = COMMAND_CONFIG,
.help = "gpio number for trst.",
.usage = "trst",
},
{
- .name = "linuxgpiod_swd_nums",
+ .name = "swd_nums",
.handler = linuxgpiod_handle_swd_gpionums,
.mode = COMMAND_CONFIG,
.help = "gpio numbers for swclk, swdio. (in that order)",
.usage = "swclk swdio",
},
{
- .name = "linuxgpiod_swclk_num",
+ .name = "swclk_num",
.handler = linuxgpiod_handle_swd_gpionum_swclk,
.mode = COMMAND_CONFIG,
.help = "gpio number for swclk.",
.usage = "swclk",
},
{
- .name = "linuxgpiod_swdio_num",
+ .name = "swdio_num",
.handler = linuxgpiod_handle_swd_gpionum_swdio,
.mode = COMMAND_CONFIG,
.help = "gpio number for swdio.",
.usage = "swdio",
},
{
- .name = "linuxgpiod_gpiochip",
+ .name = "led_num",
+ .handler = linuxgpiod_handle_gpionum_led,
+ .mode = COMMAND_CONFIG,
+ .help = "gpio number for LED.",
+ .usage = "led",
+ },
+ {
+ .name = "gpiochip",
.handler = linuxgpiod_handle_gpiochip,
.mode = COMMAND_CONFIG,
.help = "number of the gpiochip.",
COMMAND_REGISTRATION_DONE
};
+static const struct command_registration linuxgpiod_command_handlers[] = {
+ {
+ .name = "linuxgpiod",
+ .mode = COMMAND_ANY,
+ .help = "perform linuxgpiod management",
+ .chain = linuxgpiod_subcommand_handlers,
+ .usage = "",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
static const char *const linuxgpiod_transport[] = { "swd", "jtag", NULL };
static struct jtag_interface linuxgpiod_interface = {
projects / fw / openocd / blobdiff