igt_sysfs_path ()

char *
igt_sysfs_path (int device,
                char *path,
                int pathlen,
                int *idx);

This finds the sysfs directory corresponding to device .

igt_sysfs_open ()

int
igt_sysfs_open (int device,
                int *idx);

This opens the sysfs directory corresponding to device for use with igt_sysfs_set() and igt_sysfs_get().

igt_sysfs_open_parameters ()

int
igt_sysfs_open_parameters (int device);

This opens the module parameters directory (under sysfs) corresponding to the device for use with igt_sysfs_set() and igt_sysfs_get().

igt_sysfs_set_parameter ()

bool
igt_sysfs_set_parameter (int device,
                         const char *parameter,
                         const char *fmt,
                         ...);

igt_sysfs_read ()

int
igt_sysfs_read (int dir,
                const char *attr,
                void *data,
                int len);

This reads len bytes from the sysfs file to data

igt_sysfs_write ()

int
igt_sysfs_write (int dir,
                 const char *attr,
                 const void *data,
                 int len);

This writes len bytes from data to the sysfs file.

igt_sysfs_set ()

bool
igt_sysfs_set (int dir,
               const char *attr,
               const char *value);

This writes the value to the sysfs file.

igt_sysfs_get ()

char *
igt_sysfs_get (int dir,
               const char *attr);

This reads the value from the sysfs file.

igt_sysfs_scanf ()

int
igt_sysfs_scanf (int dir,
                 const char *attr,
                 const char *fmt,
                 ...);

scanf() wrapper for sysfs.

igt_sysfs_vprintf ()

int
igt_sysfs_vprintf (int dir,
                   const char *attr,
                   const char *fmt,
                   va_list ap);

igt_sysfs_printf ()

int
igt_sysfs_printf (int dir,
                  const char *attr,
                  const char *fmt,
                  ...);

printf() wrapper for sysfs.

igt_sysfs_get_u32 ()

uint32_t
igt_sysfs_get_u32 (int dir,
                   const char *attr);

Convenience wrapper to read a unsigned 32bit integer from a sysfs file.

igt_sysfs_set_u32 ()

bool
igt_sysfs_set_u32 (int dir,
                   const char *attr,
                   uint32_t value);

Convenience wrapper to write a unsigned 32bit integer to a sysfs file.

igt_sysfs_get_boolean ()

bool
igt_sysfs_get_boolean (int dir,
                       const char *attr);

Convenience wrapper to read a boolean sysfs file.

igt_sysfs_set_boolean ()

bool
igt_sysfs_set_boolean (int dir,
                       const char *attr,
                       bool value);

Convenience wrapper to write a boolean sysfs file.

bind_fbcon ()

void
bind_fbcon (bool enable);

This functions enables/disables the text console running on top of the framebuffer device.

kick_snd_hda_intel ()

void
kick_snd_hda_intel (void);

This functions unbinds the snd_hda_intel driver so the module cand be unloaded.