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STRUCT MATRIX_KEYPAD(9) Input Subsystem STRUCT MATRIX_KEYPAD(9)

NAME

struct_matrix_keypad_platform_data - platform-dependent keypad data

SYNOPSIS

struct matrix_keypad_platform_data {


  const struct matrix_keymap_data * keymap_data;


  const unsigned int * row_gpios;


  const unsigned int * col_gpios;


  unsigned int num_row_gpios;


  unsigned int num_col_gpios;


  unsigned int col_scan_delay_us;


  unsigned int debounce_ms;


  unsigned int clustered_irq;


  unsigned int clustered_irq_flags;


  bool active_low;


  bool wakeup;


  bool no_autorepeat;
};

MEMBERS

keymap_data

pointer to matrix_keymap_data

row_gpios

pointer to array of gpio numbers representing rows

col_gpios

pointer to array of gpio numbers reporesenting colums

num_row_gpios

actual number of row gpios used by device

num_col_gpios

actual number of col gpios used by device

col_scan_delay_us

delay, measured in microseconds, that is needed before we can keypad after activating column gpio

debounce_ms

debounce interval in milliseconds

clustered_irq

may be specified if interrupts of all row/column GPIOs are bundled to one single irq

clustered_irq_flags

flags that are needed for the clustered irq

active_low

gpio polarity

wakeup

controls whether the device should be set up as wakeup source

no_autorepeat

disable key autorepeat

DESCRIPTION

This structure represents platform-specific data that use used by matrix_keypad driver to perform proper initialization.

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June 2024 Kernel Hackers Manual 3.10