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This extends the pinctrl-sandbox driver to support pin muxing, and adds a test for that behaviour. The test is done in C and not python (like the existing tests for the pinctrl uclass) because it needs to call pinctrl_select_state. Another option could be to add a command that invokes pinctrl_select_state and then test everything in test/py/tests/test_pinmux.py. The pinctrl-sandbox driver now mimics the way that many pinmux devices work. There are two groups of pins which are muxed together, as well as four pins which are muxed individually. I have tried to test all normal paths. However, very few error cases are explicitly checked for. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
20 lines
453 B
C
20 lines
453 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
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*/
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#ifndef SANDBOX_PINMUX_H
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#define SANDBOX_PINMUX_H
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#define SANDBOX_PINMUX_UART 0
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#define SANDBOX_PINMUX_I2C 1
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#define SANDBOX_PINMUX_SPI 2
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#define SANDBOX_PINMUX_I2S 3
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#define SANDBOX_PINMUX_GPIO 4
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#define SANDBOX_PINMUX_CS 5
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#define SANDBOX_PINMUX_PWM 6
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#define SANDBOX_PINMUX(pin, func) ((func) << 16 | (pin))
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#endif /* SANDBOX_PINMUX_H */
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