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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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/*
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* I2C test
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*
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* For verifying the I2C bus, a full I2C bus scanning is performed.
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*
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* #ifdef CFG_SYS_POST_I2C_ADDRS
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* The test is considered as passed if all the devices and only the devices
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* in the list are found.
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* #ifdef CFG_SYS_POST_I2C_IGNORES
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* Ignore devices listed in CFG_SYS_POST_I2C_IGNORES. These devices
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* are optional or not vital to board functionality.
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* #endif
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* #else [ ! CFG_SYS_POST_I2C_ADDRS ]
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* The test is considered as passed if any I2C device is found.
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* #endif
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*/
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#include <common.h>
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#include <log.h>
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#include <post.h>
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#include <i2c.h>
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#if CFG_POST & CFG_SYS_POST_I2C
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static int i2c_ignore_device(unsigned int chip)
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{
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#ifdef CFG_SYS_POST_I2C_IGNORES
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const unsigned char i2c_ignore_list[] = CFG_SYS_POST_I2C_IGNORES;
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int i;
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for (i = 0; i < sizeof(i2c_ignore_list); i++)
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if (i2c_ignore_list[i] == chip)
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return 1;
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#endif
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return 0;
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}
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int i2c_post_test (int flags)
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{
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unsigned int i;
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#ifndef CFG_SYS_POST_I2C_ADDRS
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/* Start at address 1, address 0 is the general call address */
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for (i = 1; i < 128; i++) {
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if (i2c_ignore_device(i))
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continue;
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if (i2c_probe (i) == 0)
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return 0;
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}
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/* No devices found */
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return -1;
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#else
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unsigned int ret = 0;
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int j;
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unsigned char i2c_addr_list[] = CFG_SYS_POST_I2C_ADDRS;
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/* Start at address 1, address 0 is the general call address */
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for (i = 1; i < 128; i++) {
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if (i2c_ignore_device(i))
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continue;
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if (i2c_probe(i) != 0)
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continue;
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for (j = 0; j < sizeof(i2c_addr_list); ++j) {
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if (i == i2c_addr_list[j]) {
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i2c_addr_list[j] = 0xff;
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break;
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}
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}
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if (j == sizeof(i2c_addr_list)) {
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ret = -1;
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post_log("I2C: addr %02x not expected\n", i);
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}
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}
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for (i = 0; i < sizeof(i2c_addr_list); ++i) {
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if (i2c_addr_list[i] == 0xff)
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continue;
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if (i2c_ignore_device(i2c_addr_list[i]))
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continue;
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post_log("I2C: addr %02x did not respond\n", i2c_addr_list[i]);
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ret = -1;
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}
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return ret;
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#endif
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}
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#endif /* CFG_POST & CFG_SYS_POST_I2C */
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