linuxgpiod.c File Reference

Include dependency graph for linuxgpiod.c:

Go to the source code of this file.

Functions
static int	helper_get_line (enum adapter_gpio_config_index idx)
static void	helper_release (enum adapter_gpio_config_index idx)
static bool	is_gpio_config_valid (enum adapter_gpio_config_index idx)
static int	linuxgpiod_blink (int on)
static int	linuxgpiod_init (void)
static bool	linuxgpiod_jtag_mode_possible (void)
static int	linuxgpiod_quit (void)
static bb_value_t	linuxgpiod_read (void)
static int	linuxgpiod_reset (int trst, int srst)
static bool	linuxgpiod_swd_mode_possible (void)
static int	linuxgpiod_swd_write (int swclk, int swdio)
static void	linuxgpiod_swdio_drive (bool is_output)
static int	linuxgpiod_swdio_read (void)
static int	linuxgpiod_write (int tck, int tms, int tdi)

Variables
static const struct adapter_gpio_config *	adapter_gpio_config
static struct gpiod_chip *	gpiod_chip [ADAPTER_GPIO_IDX_NUM] = {}
static struct gpiod_line *	gpiod_line [ADAPTER_GPIO_IDX_NUM] = {}
static bool	last_stored
static int	last_swclk
static int	last_swdio
struct adapter_driver	linuxgpiod_adapter_driver
static struct bitbang_interface	linuxgpiod_bitbang
static struct jtag_interface	linuxgpiod_interface
static const char *const	linuxgpiod_transport [] = { "swd", "jtag", NULL }
static bool	swdio_input

Function Documentation

helper_get_line()

static int helper_get_line ( enum adapter_gpio_config_index  idx )

static

Definition at line 278 of file linuxgpiod.c.

References ADAPTER_GPIO_DRIVE_MODE_OPEN_DRAIN, ADAPTER_GPIO_DRIVE_MODE_OPEN_SOURCE, ADAPTER_GPIO_DRIVE_MODE_PUSH_PULL, adapter_gpio_get_name(), ADAPTER_GPIO_INIT_STATE_ACTIVE, ADAPTER_GPIO_INIT_STATE_INACTIVE, ADAPTER_GPIO_INIT_STATE_INPUT, ADAPTER_GPIO_PULL_DOWN, ADAPTER_GPIO_PULL_NONE, ADAPTER_GPIO_PULL_UP, config, ERROR_JTAG_INIT_FAILED, ERROR_OK, gpiod_chip, gpiod_line, is_gpio_config_valid(), LOG_ERROR, and LOG_WARNING.

Referenced by linuxgpiod_init().

helper_release()

static void helper_release ( enum adapter_gpio_config_index  idx )

inlinestatic

Definition at line 257 of file linuxgpiod.c.

References gpiod_chip, gpiod_line, and NULL.

Referenced by linuxgpiod_quit().

is_gpio_config_valid()

static bool is_gpio_config_valid ( enum adapter_gpio_config_index  idx )

static

Definition at line 38 of file linuxgpiod.c.

References adapter_gpio_config::chip_num, and adapter_gpio_config::gpio_num.

Referenced by helper_get_line(), linuxgpiod_jtag_mode_possible(), and linuxgpiod_swd_mode_possible().

linuxgpiod_blink()

static int linuxgpiod_blink ( int  on )

static

Definition at line 183 of file linuxgpiod.c.

linuxgpiod_init()

static int linuxgpiod_init ( void  )

static

Definition at line 365 of file linuxgpiod.c.

References adapter_gpio_get_config(), ADAPTER_GPIO_IDX_LED, ADAPTER_GPIO_IDX_SRST, ADAPTER_GPIO_IDX_SWCLK, ADAPTER_GPIO_IDX_SWDIO, ADAPTER_GPIO_IDX_SWDIO_DIR, ADAPTER_GPIO_IDX_TCK, ADAPTER_GPIO_IDX_TDI, ADAPTER_GPIO_IDX_TDO, ADAPTER_GPIO_IDX_TMS, ADAPTER_GPIO_IDX_TRST, ADAPTER_GPIO_INIT_STATE_INPUT, ERROR_JTAG_INIT_FAILED, ERROR_OK, helper_get_line(), linuxgpiod_bitbang, linuxgpiod_jtag_mode_possible(), linuxgpiod_quit(), linuxgpiod_swd_mode_possible(), LOG_ERROR, LOG_INFO, transport_is_jtag(), and transport_is_swd().

linuxgpiod_jtag_mode_possible()

static bool linuxgpiod_jtag_mode_possible ( void  )

static

Definition at line 235 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_TCK, ADAPTER_GPIO_IDX_TDI, ADAPTER_GPIO_IDX_TDO, ADAPTER_GPIO_IDX_TMS, and is_gpio_config_valid().

Referenced by linuxgpiod_init().

linuxgpiod_quit()

static int linuxgpiod_quit ( void  )

static

Definition at line 269 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_NUM, ERROR_OK, helper_release(), and LOG_DEBUG.

Referenced by linuxgpiod_init().

linuxgpiod_read()

static bb_value_t linuxgpiod_read ( void  )

static

Definition at line 47 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_TDO, BB_HIGH, BB_LOW, gpiod_line, and LOG_WARNING.

linuxgpiod_reset()

static int linuxgpiod_reset ( int  trst, int  srst  )

static

Definition at line 210 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_SRST, ADAPTER_GPIO_IDX_TRST, ERROR_FAIL, ERROR_OK, gpiod_line, LOG_DEBUG, and LOG_WARNING.

linuxgpiod_swd_mode_possible()

static bool linuxgpiod_swd_mode_possible ( void  )

static

Definition at line 248 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_SWCLK, ADAPTER_GPIO_IDX_SWDIO, and is_gpio_config_valid().

Referenced by linuxgpiod_init().

linuxgpiod_swd_write()

static int linuxgpiod_swd_write ( int  swclk, int  swdio  )

static

Definition at line 157 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_SWCLK, ADAPTER_GPIO_IDX_SWDIO, ERROR_OK, gpiod_line, last_stored, last_swclk, last_swdio, LOG_WARNING, and swdio_input.

linuxgpiod_swdio_drive()

static void linuxgpiod_swdio_drive ( bool  is_output )

static

Definition at line 122 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_SWDIO, ADAPTER_GPIO_IDX_SWDIO_DIR, gpiod_line, last_stored, LOG_WARNING, and swdio_input.

linuxgpiod_swdio_read()

static int linuxgpiod_swdio_read ( void  )

static

Definition at line 109 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_SWDIO, gpiod_line, and LOG_WARNING.

linuxgpiod_write()

static int linuxgpiod_write ( int  tck, int  tms, int  tdi  )

static

Definition at line 66 of file linuxgpiod.c.

References ADAPTER_GPIO_IDX_TCK, ADAPTER_GPIO_IDX_TDI, ADAPTER_GPIO_IDX_TMS, ERROR_OK, gpiod_line, last_tms, and LOG_WARNING.

Variable Documentation

adapter_gpio_config

const struct adapter_gpio_config* adapter_gpio_config

static

Definition at line 30 of file linuxgpiod.c.

gpiod_chip

struct gpiod_chip* gpiod_chip[ADAPTER_GPIO_IDX_NUM] = {}

static

Definition at line 22 of file linuxgpiod.c.

Referenced by helper_get_line(), and helper_release().

gpiod_line

struct gpiod_line* gpiod_line[ADAPTER_GPIO_IDX_NUM] = {}

static

Definition at line 23 of file linuxgpiod.c.

Referenced by helper_get_line(), helper_release(), linuxgpiod_read(), linuxgpiod_reset(), linuxgpiod_swd_write(), linuxgpiod_swdio_drive(), linuxgpiod_swdio_read(), and linuxgpiod_write().

last_stored

bool last_stored

static

Definition at line 27 of file linuxgpiod.c.

Referenced by linuxgpiod_swd_write(), and linuxgpiod_swdio_drive().

last_swclk

int last_swclk

static

Definition at line 25 of file linuxgpiod.c.

Referenced by linuxgpiod_swd_write().

last_swdio

int last_swdio

static

Definition at line 26 of file linuxgpiod.c.

Referenced by linuxgpiod_swd_write().

linuxgpiod_adapter_driver

struct adapter_driver linuxgpiod_adapter_driver

Initial value:

= {
    .name = "linuxgpiod",
    .transports = linuxgpiod_transport,
 
    .init = linuxgpiod_init,
    .quit = linuxgpiod_quit,
    .reset = linuxgpiod_reset,
 
    .jtag_ops = &linuxgpiod_interface,
    .swd_ops = &bitbang_swd,
}

Definition at line 430 of file linuxgpiod.c.

linuxgpiod_bitbang

struct bitbang_interface linuxgpiod_bitbang

static

Initial value:

= {
    .read = linuxgpiod_read,
    .write = linuxgpiod_write,
    .swdio_read = linuxgpiod_swdio_read,
    .swdio_drive = linuxgpiod_swdio_drive,
    .swd_write = linuxgpiod_swd_write,
    .blink = linuxgpiod_blink,
}

Definition at line 183 of file linuxgpiod.c.

Referenced by linuxgpiod_init().

linuxgpiod_interface

struct jtag_interface linuxgpiod_interface

static

Initial value:

= {
    .supported = DEBUG_CAP_TMS_SEQ,
    .execute_queue = bitbang_execute_queue,
}

Definition at line 430 of file linuxgpiod.c.

linuxgpiod_transport

const char* const linuxgpiod_transport[] = { "swd", "jtag", NULL }

static

Definition at line 430 of file linuxgpiod.c.

swdio_input

bool swdio_input

static

Definition at line 28 of file linuxgpiod.c.

Referenced by linuxgpiod_swd_write(), and linuxgpiod_swdio_drive().