STRUCT FF_RAMP_EFFEC(9) Input Subsystem STRUCT FF_RAMP_EFFEC(9)NAME
struct_ff_ramp_effect - defines parameters of a ramp force-feedback effect
SYNOPSIS
struct ff_ramp_effect {
__s16 start_level;
__s16 end_level;
struct ff_envelope envelope;
};
MEMBERS
start_level
beginning strength of the effect; may be negative
end_level
final strength of the effect; may be negative
envelope
envelope data
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 STRUCT FF_RAMP_EFFEC(9)
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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;
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
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.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 STRUCT MATRIX_KEYPAD(9)
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