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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glassebcab482014-10-13 23:42:10 -06002/*
3 * Copyright (C) 2013 Google, Inc
Simon Glassebcab482014-10-13 23:42:10 -06004 */
5
6#include <common.h>
7#include <dm.h>
8#include <fdtdec.h>
9#include <spi.h>
10#include <spi_flash.h>
Joe Hershbergere721b882015-05-20 14:27:27 -050011#include <asm/state.h>
Simon Glassebcab482014-10-13 23:42:10 -060012#include <dm/device-internal.h>
13#include <dm/test.h>
14#include <dm/uclass-internal.h>
Simon Glassebcab482014-10-13 23:42:10 -060015#include <dm/util.h>
Joe Hershbergere721b882015-05-20 14:27:27 -050016#include <test/ut.h>
Simon Glassebcab482014-10-13 23:42:10 -060017
18/* Test that we can find buses and chip-selects */
Joe Hershbergere721b882015-05-20 14:27:27 -050019static int dm_test_spi_find(struct unit_test_state *uts)
Simon Glassebcab482014-10-13 23:42:10 -060020{
21 struct sandbox_state *state = state_get_current();
22 struct spi_slave *slave;
23 struct udevice *bus, *dev;
24 const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 1;
25 struct spi_cs_info info;
Simon Glass008dcdd2018-06-11 13:07:16 -060026 ofnode node;
Simon Glassebcab482014-10-13 23:42:10 -060027
28 ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_SPI, busnum,
29 false, &bus));
30
31 /*
Simon Glass91195482016-07-05 17:10:10 -060032 * The post_bind() method will bind devices to chip selects. Check
33 * this then remove the emulation and the slave device.
Simon Glassebcab482014-10-13 23:42:10 -060034 */
35 ut_asserteq(0, uclass_get_device_by_seq(UCLASS_SPI, busnum, &bus));
36 ut_assertok(spi_cs_info(bus, cs, &info));
Simon Glass008dcdd2018-06-11 13:07:16 -060037 node = dev_ofnode(info.dev);
Stefan Roese706865a2017-03-20 12:51:48 +010038 device_remove(info.dev, DM_REMOVE_NORMAL);
Simon Glassebcab482014-10-13 23:42:10 -060039 device_unbind(info.dev);
40
41 /*
42 * Even though the device is gone, the sandbox SPI drivers always
43 * reports that CS 0 is present
44 */
45 ut_assertok(spi_cs_info(bus, cs, &info));
Simon Glassd0cff032015-01-25 08:27:12 -070046 ut_asserteq_ptr(NULL, info.dev);
Simon Glassebcab482014-10-13 23:42:10 -060047
48 /* This finds nothing because we removed the device */
49 ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev));
50 ut_asserteq(-ENODEV, spi_get_bus_and_cs(busnum, cs, speed, mode,
51 NULL, 0, &bus, &slave));
52
53 /*
54 * This forces the device to be re-added, but there is no emulation
55 * connected so the probe will fail. We require that bus is left
56 * alone on failure, and that the spi_get_bus_and_cs() does not add
57 * a 'partially-inited' device.
58 */
59 ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev));
60 ut_asserteq(-ENOENT, spi_get_bus_and_cs(busnum, cs, speed, mode,
61 "spi_flash_std", "name", &bus,
62 &slave));
Simon Glassd0cff032015-01-25 08:27:12 -070063 sandbox_sf_unbind_emul(state_get_current(), busnum, cs);
Simon Glassebcab482014-10-13 23:42:10 -060064 ut_assertok(spi_cs_info(bus, cs, &info));
Simon Glassd0cff032015-01-25 08:27:12 -070065 ut_asserteq_ptr(NULL, info.dev);
Simon Glassebcab482014-10-13 23:42:10 -060066
67 /* Add the emulation and try again */
Simon Glass008dcdd2018-06-11 13:07:16 -060068 ut_assertok(sandbox_sf_bind_emul(state, busnum, cs, bus, node,
Simon Glassebcab482014-10-13 23:42:10 -060069 "name"));
70 ut_assertok(spi_find_bus_and_cs(busnum, cs, &bus, &dev));
71 ut_assertok(spi_get_bus_and_cs(busnum, cs, speed, mode,
72 "spi_flash_std", "name", &bus, &slave));
73
74 ut_assertok(spi_cs_info(bus, cs, &info));
75 ut_asserteq_ptr(info.dev, slave->dev);
76
77 /* We should be able to add something to another chip select */
Simon Glass008dcdd2018-06-11 13:07:16 -060078 ut_assertok(sandbox_sf_bind_emul(state, busnum, cs_b, bus, node,
Simon Glassebcab482014-10-13 23:42:10 -060079 "name"));
Bin Mengbfcd9292019-09-09 06:00:03 -070080 ut_asserteq(-EINVAL, spi_get_bus_and_cs(busnum, cs_b, speed, mode,
Simon Glassebcab482014-10-13 23:42:10 -060081 "spi_flash_std", "name", &bus, &slave));
Bin Mengbfcd9292019-09-09 06:00:03 -070082 ut_asserteq(-EINVAL, spi_cs_info(bus, cs_b, &info));
83 ut_asserteq_ptr(NULL, info.dev);
Simon Glassebcab482014-10-13 23:42:10 -060084
85 /*
86 * Since we are about to destroy all devices, we must tell sandbox
87 * to forget the emulation device
88 */
89 sandbox_sf_unbind_emul(state_get_current(), busnum, cs);
90 sandbox_sf_unbind_emul(state_get_current(), busnum, cs_b);
91
92 return 0;
93}
94DM_TEST(dm_test_spi_find, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
95
96/* Test that sandbox SPI works correctly */
Joe Hershbergere721b882015-05-20 14:27:27 -050097static int dm_test_spi_xfer(struct unit_test_state *uts)
Simon Glassebcab482014-10-13 23:42:10 -060098{
99 struct spi_slave *slave;
100 struct udevice *bus;
101 const int busnum = 0, cs = 0, mode = 0;
102 const char dout[5] = {0x9f};
103 unsigned char din[5];
104
105 ut_assertok(spi_get_bus_and_cs(busnum, cs, 1000000, mode, NULL, 0,
106 &bus, &slave));
107 ut_assertok(spi_claim_bus(slave));
108 ut_assertok(spi_xfer(slave, 40, dout, din,
109 SPI_XFER_BEGIN | SPI_XFER_END));
110 ut_asserteq(0xff, din[0]);
111 ut_asserteq(0x20, din[1]);
112 ut_asserteq(0x20, din[2]);
113 ut_asserteq(0x15, din[3]);
114 spi_release_bus(slave);
115
116 /*
117 * Since we are about to destroy all devices, we must tell sandbox
118 * to forget the emulation device
119 */
Lukasz Majewski56c40462020-06-04 23:11:53 +0800120#if CONFIG_IS_ENABLED(DM_SPI_FLASH)
Simon Glassebcab482014-10-13 23:42:10 -0600121 sandbox_sf_unbind_emul(state_get_current(), busnum, cs);
122#endif
123
124 return 0;
125}
126DM_TEST(dm_test_spi_xfer, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);