3a0b75880a
Per datasheet, "HIGH AND LOW LIMIT REGISTERS", the lower 4 bit of the limit registers are unused and always report 0. The lower 4 bit should not be used for temperature comparisons, so mask the unused bits before storing the limits. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Cédric Le Goater <clg@kaod.org> Message-Id: <20240906154911.86803-6-philmd@linaro.org> [PMD: Update tests/qtest/ files] Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/*
|
|
* QTest testcase for Broadcom Serial Controller (BSC)
|
|
*
|
|
* Copyright (c) 2024 Rayhan Faizel <rayhan.faizel@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: MIT
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "libqtest-single.h"
|
|
|
|
#include "hw/i2c/bcm2835_i2c.h"
|
|
#include "hw/sensor/tmp105_regs.h"
|
|
|
|
static const uint32_t bsc_base_addrs[] = {
|
|
0x3f205000, /* I2C0 */
|
|
0x3f804000, /* I2C1 */
|
|
0x3f805000, /* I2C2 */
|
|
};
|
|
|
|
static void bcm2835_i2c_init_transfer(uint32_t base_addr, bool read)
|
|
{
|
|
/* read flag is bit 0 so we can write it directly */
|
|
int interrupt = read ? BCM2835_I2C_C_INTR : BCM2835_I2C_C_INTT;
|
|
|
|
writel(base_addr + BCM2835_I2C_C,
|
|
BCM2835_I2C_C_I2CEN | BCM2835_I2C_C_INTD |
|
|
BCM2835_I2C_C_ST | BCM2835_I2C_C_CLEAR | interrupt | read);
|
|
}
|
|
|
|
static void test_i2c_read_write(gconstpointer data)
|
|
{
|
|
uint32_t i2cdata;
|
|
intptr_t index = (intptr_t) data;
|
|
uint32_t base_addr = bsc_base_addrs[index];
|
|
|
|
/* Write to TMP105 register */
|
|
writel(base_addr + BCM2835_I2C_A, 0x50);
|
|
writel(base_addr + BCM2835_I2C_DLEN, 3);
|
|
|
|
bcm2835_i2c_init_transfer(base_addr, 0);
|
|
|
|
writel(base_addr + BCM2835_I2C_FIFO, TMP105_REG_T_HIGH);
|
|
writel(base_addr + BCM2835_I2C_FIFO, 0xde);
|
|
writel(base_addr + BCM2835_I2C_FIFO, 0xad);
|
|
|
|
/* Clear flags */
|
|
writel(base_addr + BCM2835_I2C_S, BCM2835_I2C_S_DONE | BCM2835_I2C_S_ERR |
|
|
BCM2835_I2C_S_CLKT);
|
|
|
|
/* Read from TMP105 register */
|
|
writel(base_addr + BCM2835_I2C_A, 0x50);
|
|
writel(base_addr + BCM2835_I2C_DLEN, 1);
|
|
|
|
bcm2835_i2c_init_transfer(base_addr, 0);
|
|
|
|
writel(base_addr + BCM2835_I2C_FIFO, TMP105_REG_T_HIGH);
|
|
|
|
writel(base_addr + BCM2835_I2C_DLEN, 2);
|
|
bcm2835_i2c_init_transfer(base_addr, 1);
|
|
|
|
i2cdata = readl(base_addr + BCM2835_I2C_FIFO);
|
|
g_assert_cmpint(i2cdata, ==, 0xde);
|
|
|
|
i2cdata = readl(base_addr + BCM2835_I2C_FIFO);
|
|
g_assert_cmpint(i2cdata, ==, 0xa0);
|
|
|
|
/* Clear flags */
|
|
writel(base_addr + BCM2835_I2C_S, BCM2835_I2C_S_DONE | BCM2835_I2C_S_ERR |
|
|
BCM2835_I2C_S_CLKT);
|
|
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int ret;
|
|
int i;
|
|
|
|
g_test_init(&argc, &argv, NULL);
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
g_autofree char *test_name =
|
|
g_strdup_printf("/bcm2835/bcm2835-i2c%d/read_write", i);
|
|
qtest_add_data_func(test_name, (void *)(intptr_t) i,
|
|
test_i2c_read_write);
|
|
}
|
|
|
|
/* Run I2C tests with TMP105 slaves on all three buses */
|
|
qtest_start("-M raspi3b "
|
|
"-device tmp105,address=0x50,bus=i2c-bus.0 "
|
|
"-device tmp105,address=0x50,bus=i2c-bus.1 "
|
|
"-device tmp105,address=0x50,bus=i2c-bus.2");
|
|
ret = g_test_run();
|
|
qtest_end();
|
|
|
|
return ret;
|
|
}
|