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struct_matrix_keypad_platform_data(9) [centos man page]

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. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRUCT MATRIX_KEYPAD(9)

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GPIOLED(4)						   BSD Kernel Interfaces Manual 						GPIOLED(4)

gpioled -- GPIO LED generic device driver SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device gpio device gpioled DESCRIPTION
The gpioled driver provides glue to attach a led(4) compatible device to a GPIO pin. Each LED in the system has a name which is used to export a device as /dev/led/<name>. The GPIO pin can then be controlled by writing to this device as described in led(4). On a device.hints(5) based system, like MIPS, these values are configurable for gpioled: hint.gpioled.%d.at The gpiobus you are attaching to. Normally assigned to gpiobus0. hint.gpioled.%d.name Arbitrary name of device in /dev/led/ to create for led(4). hint.gpioled.%d.pins Which pin on the GPIO interface to map to this instance. Please note that this mask should only ever have one bit set (any other bits - i.e., pins - will be ignored). On a FDT(4) based system, like ARM, the DTS part for a gpioled device usually looks like: gpio: gpio { gpio-controller; ... led0 { compatible = "gpioled"; gpios = <&gpio 16 2 0>; /* GPIO pin 16. */ name = "ok"; }; led1 { compatible = "gpioled"; gpios = <&gpio 17 2 0>; /* GPIO pin 17. */ name = "user-led1"; }; }; Optionally, you can choose to combine all the LEDs under a single ``gpio-leds'' compatible node: simplebus0 { ... leds { compatible = "gpio-leds"; led0 { gpios = <&gpio 16 2 0>; name = "ok" }; led1 { gpios = <&gpio 17 2 0>; name = "user-led1" }; }; }; Both methods are equally supported and it is possible to have the LEDs defined with any sort of mix between the methods. The only restric- tion is that a GPIO pin cannot be mapped by two different (gpio)leds. For more details about the gpios property, please consult /usr/src/sys/boot/fdt/dts/bindings-gpio.txt. The property name is the arbitrary name of the device in /dev/led/ to create for led(4). SEE ALSO
fdt(4), gpio(4), gpioiic(4), led(4) HISTORY
The gpioled manual page first appeared in FreeBSD 10.1. AUTHORS
This manual page was written by Luiz Otavio O Souza. BSD
May 14, 2014 BSD
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