linuxgpiod: Allow using multiple GPIO chips.
Allow passing optional gpiochip number before gpio number. If no optional chip number is passed, the one from the 'gpiochip' configuration directive is used. Change-Id: I16933d81581d9af4d1600c5f9fdbc832ef3fda94 Signed-off-by: Laszlo Sitzer <dlsitzer@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/6742 Tested-by: jenkins Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Laszlo Sitzer
Antonio Borneo
parent
d674018432
commit
c892f1055d
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@ -29,8 +29,26 @@ static int swclk_gpio = -1;
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static int swdio_gpio = -1;
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static int led_gpio = -1;
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static int gpiochip = -1;
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static int tck_gpiochip = -1;
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static int tms_gpiochip = -1;
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static int tdi_gpiochip = -1;
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static int tdo_gpiochip = -1;
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static int trst_gpiochip = -1;
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static int srst_gpiochip = -1;
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static int swclk_gpiochip = -1;
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static int swdio_gpiochip = -1;
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static int led_gpiochip = -1;
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static struct gpiod_chip *gpiod_chip_tck;
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static struct gpiod_chip *gpiod_chip_tms;
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static struct gpiod_chip *gpiod_chip_tdi;
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static struct gpiod_chip *gpiod_chip_tdo;
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static struct gpiod_chip *gpiod_chip_trst;
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static struct gpiod_chip *gpiod_chip_srst;
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static struct gpiod_chip *gpiod_chip_swclk;
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static struct gpiod_chip *gpiod_chip_swdio;
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static struct gpiod_chip *gpiod_chip_led;
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static struct gpiod_chip *gpiod_chip;
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static struct gpiod_line *gpiod_tck;
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static struct gpiod_line *gpiod_tms;
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static struct gpiod_line *gpiod_tdi;
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@ -273,12 +291,31 @@ static int linuxgpiod_quit(void)
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helper_release(gpiod_tdi);
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helper_release(gpiod_tdo);
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gpiod_chip_close(gpiod_chip);
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if (gpiod_chip_led != NULL)
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gpiod_chip_close(gpiod_chip_led);
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if (gpiod_chip_srst != NULL)
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gpiod_chip_close(gpiod_chip_srst);
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if (gpiod_chip_swdio != NULL)
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gpiod_chip_close(gpiod_chip_swdio);
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if (gpiod_chip_swclk != NULL)
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gpiod_chip_close(gpiod_chip_swclk);
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if (gpiod_chip_trst != NULL)
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gpiod_chip_close(gpiod_chip_trst);
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if (gpiod_chip_tms != NULL)
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gpiod_chip_close(gpiod_chip_tms);
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if (gpiod_chip_tck != NULL)
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gpiod_chip_close(gpiod_chip_tck);
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if (gpiod_chip_tdi != NULL)
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gpiod_chip_close(gpiod_chip_tdi);
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if (gpiod_chip_tdo != NULL)
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gpiod_chip_close(gpiod_chip_tdo);
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return ERROR_OK;
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}
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static struct gpiod_line *helper_get_line(const char *label, unsigned int offset, int val, int dir, int flags)
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static struct gpiod_line *helper_get_line(const char *label,
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struct gpiod_chip *gpiod_chip, unsigned int offset,
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int val, int dir, int flags)
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{
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struct gpiod_line *line;
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int retval;
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@ -304,19 +341,25 @@ static struct gpiod_line *helper_get_line(const char *label, unsigned int offset
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return line;
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}
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static struct gpiod_line *helper_get_input_line(const char *label, unsigned int offset)
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static struct gpiod_line *helper_get_input_line(const char *label,
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struct gpiod_chip *gpiod_chip, unsigned int offset)
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{
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return helper_get_line(label, offset, 0, GPIOD_LINE_REQUEST_DIRECTION_INPUT, 0);
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return helper_get_line(label, gpiod_chip, offset, 0,
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GPIOD_LINE_REQUEST_DIRECTION_INPUT, 0);
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}
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static struct gpiod_line *helper_get_output_line(const char *label, unsigned int offset, int val)
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static struct gpiod_line *helper_get_output_line(const char *label,
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struct gpiod_chip *gpiod_chip, unsigned int offset, int val)
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{
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return helper_get_line(label, offset, val, GPIOD_LINE_REQUEST_DIRECTION_OUTPUT, 0);
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return helper_get_line(label, gpiod_chip, offset, val,
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GPIOD_LINE_REQUEST_DIRECTION_OUTPUT, 0);
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}
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static struct gpiod_line *helper_get_open_drain_output_line(const char *label, unsigned int offset, int val)
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static struct gpiod_line *helper_get_open_drain_output_line(const char *label,
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struct gpiod_chip *gpiod_chip, unsigned int offset, int val)
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{
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return helper_get_line(label, offset, val, GPIOD_LINE_REQUEST_DIRECTION_OUTPUT, GPIOD_LINE_REQUEST_FLAG_OPEN_DRAIN);
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return helper_get_line(label, gpiod_chip, offset, val,
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GPIOD_LINE_REQUEST_DIRECTION_OUTPUT, GPIOD_LINE_REQUEST_FLAG_OPEN_DRAIN);
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}
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static int linuxgpiod_init(void)
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@ -325,12 +368,6 @@ static int linuxgpiod_init(void)
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bitbang_interface = &linuxgpiod_bitbang;
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gpiod_chip = gpiod_chip_open_by_number(gpiochip);
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if (!gpiod_chip) {
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LOG_ERROR("Cannot open LinuxGPIOD gpiochip %d", gpiochip);
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return ERROR_JTAG_INIT_FAILED;
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}
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/*
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* Configure TDO as an input, and TDI, TCK, TMS, TRST, SRST
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* as outputs. Drive TDI and TCK low, and TMS/TRST/SRST high.
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@ -343,27 +380,54 @@ static int linuxgpiod_init(void)
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goto out_error;
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}
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gpiod_tdo = helper_get_input_line("tdo", tdo_gpio);
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gpiod_chip_tdo = gpiod_chip_open_by_number(tdo_gpiochip);
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if (!gpiod_chip_tdo) {
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LOG_ERROR("Cannot open LinuxGPIOD tdo_gpiochip %d", tdo_gpiochip);
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goto out_error;
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}
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gpiod_chip_tdi = gpiod_chip_open_by_number(tdi_gpiochip);
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if (!gpiod_chip_tdi) {
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LOG_ERROR("Cannot open LinuxGPIOD tdi_gpiochip %d", tdi_gpiochip);
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goto out_error;
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}
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gpiod_chip_tck = gpiod_chip_open_by_number(tck_gpiochip);
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if (!gpiod_chip_tck) {
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LOG_ERROR("Cannot open LinuxGPIOD tck_gpiochip %d", tck_gpiochip);
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goto out_error;
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}
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gpiod_chip_tms = gpiod_chip_open_by_number(tms_gpiochip);
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if (!gpiod_chip_tms) {
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LOG_ERROR("Cannot open LinuxGPIOD tms_gpiochip %d", tms_gpiochip);
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goto out_error;
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}
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gpiod_tdo = helper_get_input_line("tdo", gpiod_chip_tdo, tdo_gpio);
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if (!gpiod_tdo)
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goto out_error;
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gpiod_tdi = helper_get_output_line("tdi", tdi_gpio, 0);
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gpiod_tdi = helper_get_output_line("tdi", gpiod_chip_tdi, tdi_gpio, 0);
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if (!gpiod_tdi)
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goto out_error;
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gpiod_tck = helper_get_output_line("tck", tck_gpio, 0);
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gpiod_tck = helper_get_output_line("tck", gpiod_chip_tck, tck_gpio, 0);
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if (!gpiod_tck)
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goto out_error;
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gpiod_tms = helper_get_output_line("tms", tms_gpio, 1);
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gpiod_tms = helper_get_output_line("tms", gpiod_chip_tms, tms_gpio, 1);
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if (!gpiod_tms)
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goto out_error;
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if (is_gpio_valid(trst_gpio)) {
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gpiod_chip_trst = gpiod_chip_open_by_number(trst_gpiochip);
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if (!gpiod_chip_trst) {
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LOG_ERROR("Cannot open LinuxGPIOD trst_gpiochip %d", trst_gpiochip);
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goto out_error;
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}
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if (jtag_get_reset_config() & RESET_TRST_OPEN_DRAIN)
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gpiod_trst = helper_get_open_drain_output_line("trst", trst_gpio, 1);
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gpiod_trst = helper_get_open_drain_output_line("trst", gpiod_chip_trst, trst_gpio, 1);
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else
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gpiod_trst = helper_get_output_line("trst", trst_gpio, 1);
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gpiod_trst = helper_get_output_line("trst", gpiod_chip_trst, trst_gpio, 1);
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if (!gpiod_trst)
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goto out_error;
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@ -376,27 +440,50 @@ static int linuxgpiod_init(void)
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goto out_error;
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}
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gpiod_swclk = helper_get_output_line("swclk", swclk_gpio, 1);
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gpiod_chip_swclk = gpiod_chip_open_by_number(swclk_gpiochip);
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if (!gpiod_chip_swclk) {
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LOG_ERROR("Cannot open LinuxGPIOD swclk_gpiochip %d", swclk_gpiochip);
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goto out_error;
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}
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gpiod_chip_swdio = gpiod_chip_open_by_number(swdio_gpiochip);
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if (!gpiod_chip_swdio) {
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LOG_ERROR("Cannot open LinuxGPIOD swdio_gpiochip %d", swdio_gpiochip);
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goto out_error;
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}
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gpiod_swclk = helper_get_output_line("swclk", gpiod_chip_swclk, swclk_gpio, 1);
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if (!gpiod_swclk)
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goto out_error;
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gpiod_swdio = helper_get_output_line("swdio", swdio_gpio, 1);
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gpiod_swdio = helper_get_output_line("swdio", gpiod_chip_swdio, swdio_gpio, 1);
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if (!gpiod_swdio)
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goto out_error;
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}
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if (is_gpio_valid(srst_gpio)) {
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gpiod_chip_srst = gpiod_chip_open_by_number(srst_gpiochip);
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if (!gpiod_chip_srst) {
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LOG_ERROR("Cannot open LinuxGPIOD srst_gpiochip %d", srst_gpiochip);
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goto out_error;
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}
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if (jtag_get_reset_config() & RESET_SRST_PUSH_PULL)
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gpiod_srst = helper_get_output_line("srst", srst_gpio, 1);
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gpiod_srst = helper_get_output_line("srst", gpiod_chip_srst, srst_gpio, 1);
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else
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gpiod_srst = helper_get_open_drain_output_line("srst", srst_gpio, 1);
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gpiod_srst = helper_get_open_drain_output_line("srst", gpiod_chip_srst, srst_gpio, 1);
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if (!gpiod_srst)
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goto out_error;
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}
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if (is_gpio_valid(led_gpio)) {
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gpiod_led = helper_get_output_line("led", led_gpio, 0);
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gpiod_chip_led = gpiod_chip_open_by_number(led_gpiochip);
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if (!gpiod_chip_led) {
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LOG_ERROR("Cannot open LinuxGPIOD led_gpiochip %d", led_gpiochip);
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goto out_error;
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}
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gpiod_led = helper_get_output_line("led", gpiod_chip_led, led_gpio, 0);
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if (!gpiod_led)
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goto out_error;
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}
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@ -409,6 +496,21 @@ out_error:
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return ERROR_JTAG_INIT_FAILED;
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}
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COMMAND_HELPER(linuxgpiod_helper_gpionum, const char *name, int *chip, int *line)
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{
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int i = 0;
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if (CMD_ARGC > 2)
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return ERROR_COMMAND_SYNTAX_ERROR;
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if (CMD_ARGC == 2) {
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], *chip);
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i = 1;
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}
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if (CMD_ARGC > 0)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[i], *line);
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command_print(CMD, "LinuxGPIOD %s: chip = %d, num = %d", name, *chip, *line);
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return ERROR_OK;
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}
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COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionums)
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{
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if (CMD_ARGC == 4) {
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@ -429,56 +531,38 @@ COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionums)
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COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionum_tck)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tck_gpio);
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command_print(CMD, "LinuxGPIOD num: tck = %d", tck_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "tck", &tck_gpiochip,
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&tck_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionum_tms)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tms_gpio);
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command_print(CMD, "LinuxGPIOD num: tms = %d", tms_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "tms", &tms_gpiochip,
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&tms_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionum_tdo)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tdo_gpio);
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command_print(CMD, "LinuxGPIOD num: tdo = %d", tdo_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "tdo", &tdo_gpiochip,
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&tdo_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionum_tdi)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], tdi_gpio);
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command_print(CMD, "LinuxGPIOD num: tdi = %d", tdi_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "tdi", &tdi_gpiochip,
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&tdi_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionum_srst)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], srst_gpio);
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command_print(CMD, "LinuxGPIOD num: srst = %d", srst_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "srst", &srst_gpiochip,
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&srst_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_jtag_gpionum_trst)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], trst_gpio);
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command_print(CMD, "LinuxGPIOD num: trst = %d", trst_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "trst", &trst_gpiochip,
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&trst_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_swd_gpionums)
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@ -499,35 +583,36 @@ COMMAND_HANDLER(linuxgpiod_handle_swd_gpionums)
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COMMAND_HANDLER(linuxgpiod_handle_swd_gpionum_swclk)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], swclk_gpio);
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command_print(CMD, "LinuxGPIOD num: swclk = %d", swclk_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "swclk", &swclk_gpiochip,
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&swclk_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_swd_gpionum_swdio)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], swdio_gpio);
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command_print(CMD, "LinuxGPIOD num: swdio = %d", swdio_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "swdio", &swdio_gpiochip,
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&swdio_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_gpionum_led)
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{
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if (CMD_ARGC == 1)
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], led_gpio);
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command_print(CMD, "LinuxGPIOD num: led = %d", led_gpio);
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return ERROR_OK;
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return CALL_COMMAND_HANDLER(linuxgpiod_helper_gpionum, "led", &led_gpiochip,
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&led_gpio);
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}
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COMMAND_HANDLER(linuxgpiod_handle_gpiochip)
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{
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if (CMD_ARGC == 1)
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if (CMD_ARGC == 1) {
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COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], gpiochip);
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tck_gpiochip = gpiochip;
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tms_gpiochip = gpiochip;
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tdi_gpiochip = gpiochip;
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tdo_gpiochip = gpiochip;
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trst_gpiochip = gpiochip;
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srst_gpiochip = gpiochip;
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swclk_gpiochip = gpiochip;
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swdio_gpiochip = gpiochip;
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led_gpiochip = gpiochip;
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}
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command_print(CMD, "LinuxGPIOD gpiochip = %d", gpiochip);
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return ERROR_OK;
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@ -545,43 +630,43 @@ static const struct command_registration linuxgpiod_subcommand_handlers[] = {
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.name = "tck_num",
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.handler = linuxgpiod_handle_jtag_gpionum_tck,
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.mode = COMMAND_CONFIG,
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.help = "gpio number for tck.",
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.usage = "tck",
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.help = "gpio chip number (optional) and gpio number for tck.",
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.usage = "[chip] tck",
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},
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{
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.name = "tms_num",
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.handler = linuxgpiod_handle_jtag_gpionum_tms,
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.mode = COMMAND_CONFIG,
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.help = "gpio number for tms.",
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.usage = "tms",
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.help = "gpio chip number (optional) and gpio number for tms.",
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.usage = "[chip] tms",
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},
|
||||
{
|
||||
.name = "tdo_num",
|
||||
.handler = linuxgpiod_handle_jtag_gpionum_tdo,
|
||||
.mode = COMMAND_CONFIG,
|
||||
.help = "gpio number for tdo.",
|
||||
.usage = "tdo",
|
||||
.help = "gpio chip number (optional) and gpio number for tdo.",
|
||||
.usage = "[chip] tdo",
|
||||
},
|
||||
{
|
||||
.name = "tdi_num",
|
||||
.handler = linuxgpiod_handle_jtag_gpionum_tdi,
|
||||
.mode = COMMAND_CONFIG,
|
||||
.help = "gpio number for tdi.",
|
||||
.usage = "tdi",
|
||||
.help = "gpio chip number (optional) and gpio number for tdi.",
|
||||
.usage = "[chip] tdi",
|
||||
},
|
||||
{
|
||||
.name = "srst_num",
|
||||
.handler = linuxgpiod_handle_jtag_gpionum_srst,
|
||||
.mode = COMMAND_CONFIG,
|
||||
.help = "gpio number for srst.",
|
||||
.usage = "srst",
|
||||
.help = "gpio chip number (optional) and gpio number for srst.",
|
||||
.usage = "[chip] srst",
|
||||
},
|
||||
{
|
||||
.name = "trst_num",
|
||||
.handler = linuxgpiod_handle_jtag_gpionum_trst,
|
||||
.mode = COMMAND_CONFIG,
|
||||
.help = "gpio number for trst.",
|
||||
.usage = "trst",
|
||||
.help = "gpio chip number (optional) and gpio number for trst.",
|
||||
.usage = "[chip] trst",
|
||||
},
|
||||
{
|
||||
.name = "swd_nums",
|
||||
|
|
@ -594,22 +679,22 @@ static const struct command_registration linuxgpiod_subcommand_handlers[] = {
|
|||
.name = "swclk_num",
|
||||
.handler = linuxgpiod_handle_swd_gpionum_swclk,
|
||||
.mode = COMMAND_CONFIG,
|
||||
.help = "gpio number for swclk.",
|
||||
.usage = "swclk",
|
||||
.help = "gpio chip number (optional) and gpio number for swclk.",
|
||||
.usage = "[chip] swclk",
|
||||
},
|
||||
{
|
||||
.name = "swdio_num",
|
||||
.handler = linuxgpiod_handle_swd_gpionum_swdio,
|
||||
.mode = COMMAND_CONFIG,
|
||||
.help = "gpio number for swdio.",
|
||||
.usage = "swdio",
|
||||
.help = "gpio chip number (optional) and gpio number for swdio.",
|
||||
.usage = "[chip] swdio",
|
||||
},
|
||||
{
|
||||
.name = "led_num",
|
||||
.handler = linuxgpiod_handle_gpionum_led,
|
||||
.mode = COMMAND_CONFIG,
|
||||
.help = "gpio number for LED.",
|
||||
.usage = "led",
|
||||
.help = "gpio chip number (optional) and gpio number for LED.",
|
||||
.usage = "[chip] led",
|
||||
},
|
||||
{
|
||||
.name = "gpiochip",
|
||||
|
|
|
|||
Loading…
Reference in New Issue