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https://github.com/brain-hackers/u-boot-brain
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7f0f1806e3
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>
58 lines
1.7 KiB
C
58 lines
1.7 KiB
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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#include <common.h>
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#include <dm.h>
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#include <dm/pinctrl.h>
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#include <dm/test.h>
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#include <test/ut.h>
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static int dm_test_pinmux(struct unit_test_state *uts)
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{
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char buf[64];
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struct udevice *dev;
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#define test_muxing(selector, expected) do { \
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ut_assertok(pinctrl_get_pin_muxing(dev, selector, buf, sizeof(buf))); \
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ut_asserteq_str(expected, (char *)&buf); \
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} while (0)
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ut_assertok(uclass_get_device_by_name(UCLASS_PINCTRL, "pinctrl", &dev));
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test_muxing(0, "UART TX.");
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test_muxing(1, "UART RX.");
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test_muxing(2, "I2S SCK.");
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test_muxing(3, "I2S SD.");
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test_muxing(4, "I2S WS.");
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test_muxing(5, "GPIO0 bias-pull-up input-disable.");
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test_muxing(6, "GPIO1 drive-open-drain.");
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test_muxing(7, "GPIO2 bias-pull-down input-enable.");
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test_muxing(8, "GPIO3 bias-disable.");
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ut_assertok(pinctrl_select_state(dev, "alternate"));
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test_muxing(0, "I2C SCL drive-open-drain.");
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test_muxing(1, "I2C SDA drive-open-drain.");
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test_muxing(2, "SPI SCLK.");
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test_muxing(3, "SPI MOSI.");
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test_muxing(4, "SPI MISO.");
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test_muxing(5, "SPI CS0.");
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test_muxing(6, "SPI CS1.");
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test_muxing(7, "GPIO2 bias-pull-down input-enable.");
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test_muxing(8, "GPIO3 bias-disable.");
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ut_assertok(pinctrl_select_state(dev, "0"));
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test_muxing(0, "I2C SCL drive-open-drain.");
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test_muxing(1, "I2C SDA drive-open-drain.");
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test_muxing(2, "I2S SCK.");
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test_muxing(3, "I2S SD.");
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test_muxing(4, "I2S WS.");
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test_muxing(5, "GPIO0 bias-pull-up input-disable.");
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test_muxing(6, "GPIO1 drive-open-drain.");
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test_muxing(7, "GPIO2 bias-pull-down input-enable.");
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test_muxing(8, "GPIO3 bias-disable.");
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return 0;
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}
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DM_TEST(dm_test_pinmux, UT_TESTF_SCAN_FDT);
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