Lines Matching refs:to

9 - leds-gpio: drivers/leds/leds-gpio.c will handle LEDs connected to  GPIO
13   i.e. a LED will turn on/off in response to a GPIO line going high or low
17   can generate interrupts in response to a key press. Also supports debounce.
20   GPIO line cannot generate interrupts, so it needs to be periodically polled
23 - gpio_mouse: drivers/input/mouse/gpio_mouse.c is used to provide a mouse with
24   up to three buttons by simply using GPIOs and no mouse port. You can cut the
25   mouse cable and connect the wires to GPIO lines or solder a mouse connector
26   to the lines for a more permanent solution of this type.
28 - gpio-beeper: drivers/input/misc/gpio-beeper.c is used to provide a beep from
29   an external speaker connected to a GPIO line.
36 - extcon-gpio: drivers/extcon/extcon-gpio.c is used when you need to read an
40 - restart-gpio: drivers/power/gpio-restart.c is used to restart/reboot the
42   userspace can issue the right system call to restart the system.
44 - poweroff-gpio: drivers/power/gpio-poweroff.c is used to power the system down
46   userspace can issue the right system call to power down the system.
48 - gpio-gate-clock: drivers/clk/clk-gpio-gate.c is used to control a gated clock
51 - i2c-gpio: drivers/i2c/busses/i2c-gpio.c is used to drive an I2C bus
53   appear as any other I2C bus to the system and makes it possible to connect
56 - spi_gpio: drivers/spi/spi-gpio.c is used to drive an SPI bus (variable number
59   and makes it possible to connect drivers for SPI devices on the bus like
61   to this SPI by using the mmc_spi host from the MMC/SD card subsystem.
63 - w1-gpio: drivers/w1/masters/w1-gpio.c is used to drive a one-wire bus using
67 - gpio-fan: drivers/hwmon/gpio-fan.c is used to control a fan for cooling the
68   system, connected to a GPIO line (and optionally a GPIO alarm line),
69   presenting all the right in-kernel and sysfs interfaces to make your system
72 - gpio-regulator: drivers/regulator/gpio-regulator.c is used to control a
76 - gpio-wdt: drivers/watchdog/gpio_wdt.c is used to provide a watchdog timer
77   that will periodically "ping" a hardware connected to a GPIO line by toggling
78   it from 1-to-0-to-1. If that hardware does not recieve its "ping"
81 - gpio-nand: drivers/mtd/nand/gpio.c is used to connect a NAND flash chip to
86 Apart from this there are special GPIO drivers in subsystems like MMC/SD to
88 to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The
90 usually connected directly to the flash.
92 Use those instead of talking directly to the GPIOs using sysfs; they integrate
93 with kernel frameworks better than your userspace code could. Needless to say,