diff options
Diffstat (limited to 'board/cr50_a1/gpio.inc')
| -rw-r--r-- | board/cr50_a1/gpio.inc | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/board/cr50_a1/gpio.inc b/board/cr50_a1/gpio.inc new file mode 100644 index 0000000000..8c518b8cf7 --- /dev/null +++ b/board/cr50_a1/gpio.inc @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2014 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* Inputs with interrupt handlers are first for efficiency */ + +/* User Push buttons */ +GPIO(SW_N, 0, 0, GPIO_INT_RISING, button_event) +GPIO(SW_S, 0, 1, GPIO_INT_RISING, button_event) +GPIO(SW_W, 0, 2, GPIO_INT_RISING, button_event) +GPIO(SW_E, 0, 3, GPIO_INT_RISING, button_event) + +/* We can't trigger on both rising and falling edge, so attach each button + * to two input GPIOs. */ +GPIO(SW_N_, 1, 0, GPIO_INT_FALLING, button_event) +GPIO(SW_S_, 1, 1, GPIO_INT_FALLING, button_event) +GPIO(SW_W_, 1, 2, GPIO_INT_FALLING, button_event) +GPIO(SW_E_, 1, 3, GPIO_INT_FALLING, button_event) + +/* User GPIO LEDs */ +GPIO(LED_2, 0, 4, GPIO_OUT_LOW, NULL) +GPIO(LED_3, 0, 5, GPIO_OUT_LOW, NULL) +GPIO(LED_4, 0, 6, GPIO_OUT_LOW, NULL) +GPIO(LED_5, 0, 7, GPIO_OUT_LOW, NULL) +GPIO(LED_6, 0, 8, GPIO_OUT_LOW, NULL) +GPIO(LED_7, 0, 9, GPIO_OUT_LOW, NULL) + +/* Unimplemented signals which we need to emulate for now */ +UNIMPLEMENTED(ENTERING_RW) + +/* The Cr50 ARM core has no alternate functions, so we repurpose that + * macro to describe the PINMUX setup. The args are + * + * 1. The ARM core GPIO or SoC peripheral function to connect + * 2. The pinmux DIO pad to connect to + * 3. <ignored> + * 4. MODULE_GPIO, to prevent being called by gpio_config_module() + * 5. flags to specify the direction if the GPIO isn't enough + */ + +/* The serial port is one of the SoC peripheral functions */ +ALTERNATE(FUNC(UART0_TX), DIO(A0), 0, MODULE_GPIO, DIO_OUTPUT) +ALTERNATE(FUNC(UART0_RX), DIO(A1), 0, MODULE_GPIO, DIO_INPUT) + +/* Inputs */ +ALTERNATE(SW_N, DIO(M0), 0, MODULE_GPIO, 0) +ALTERNATE(SW_S, DIO(M1), 0, MODULE_GPIO, 0) +ALTERNATE(SW_W, DIO(M2), 0, MODULE_GPIO, 0) +ALTERNATE(SW_E, DIO(M3), 0, MODULE_GPIO, 0) + +/* Aliased Inputs, connected to the same pins */ +ALTERNATE(SW_N_, DIO(M0), 0, MODULE_GPIO, 0) +ALTERNATE(SW_S_, DIO(M1), 0, MODULE_GPIO, 0) +ALTERNATE(SW_W_, DIO(M2), 0, MODULE_GPIO, 0) +ALTERNATE(SW_E_, DIO(M3), 0, MODULE_GPIO, 0) + +/* Outputs - also mark as inputs so we can read back from the driven pin */ +ALTERNATE(LED_2, DIO(A9), 0, MODULE_GPIO, DIO_INPUT) +ALTERNATE(LED_3, DIO(A10), 0, MODULE_GPIO, DIO_INPUT) +ALTERNATE(LED_4, DIO(A11), 0, MODULE_GPIO, DIO_INPUT) +ALTERNATE(LED_5, DIO(A12), 0, MODULE_GPIO, DIO_INPUT) +ALTERNATE(LED_6, DIO(A13), 0, MODULE_GPIO, DIO_INPUT) +ALTERNATE(LED_7, DIO(A14), 0, MODULE_GPIO, DIO_INPUT) |