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-rw-r--r--qemu/tests/tmp105-test.c169
1 files changed, 169 insertions, 0 deletions
diff --git a/qemu/tests/tmp105-test.c b/qemu/tests/tmp105-test.c
new file mode 100644
index 000000000..99db53819
--- /dev/null
+++ b/qemu/tests/tmp105-test.c
@@ -0,0 +1,169 @@
+/*
+ * QTest testcase for the TMP105 temperature sensor
+ *
+ * Copyright (c) 2012 Andreas Färber
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <glib.h>
+
+#include "libqtest.h"
+#include "libqos/i2c.h"
+#include "hw/misc/tmp105_regs.h"
+
+#define OMAP2_I2C_1_BASE 0x48070000
+
+#define TMP105_TEST_ID "tmp105-test"
+#define TMP105_TEST_ADDR 0x49
+
+static I2CAdapter *i2c;
+
+static uint16_t tmp105_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
+{
+ uint8_t resp[1];
+ i2c_send(i2c, addr, &reg, 1);
+ i2c_recv(i2c, addr, resp, 1);
+ return resp[0];
+}
+
+static uint16_t tmp105_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
+{
+ uint8_t resp[2];
+ i2c_send(i2c, addr, &reg, 1);
+ i2c_recv(i2c, addr, resp, 2);
+ return (resp[0] << 8) | resp[1];
+}
+
+static void tmp105_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
+ uint8_t value)
+{
+ uint8_t cmd[2];
+ uint8_t resp[1];
+
+ cmd[0] = reg;
+ cmd[1] = value;
+ i2c_send(i2c, addr, cmd, 2);
+ i2c_recv(i2c, addr, resp, 1);
+ g_assert_cmphex(resp[0], ==, cmd[1]);
+}
+
+static void tmp105_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
+ uint16_t value)
+{
+ uint8_t cmd[3];
+ uint8_t resp[2];
+
+ cmd[0] = reg;
+ cmd[1] = value >> 8;
+ cmd[2] = value & 255;
+ i2c_send(i2c, addr, cmd, 3);
+ i2c_recv(i2c, addr, resp, 2);
+ g_assert_cmphex(resp[0], ==, cmd[1]);
+ g_assert_cmphex(resp[1], ==, cmd[2]);
+}
+
+static int qmp_tmp105_get_temperature(const char *id)
+{
+ QDict *response;
+ int ret;
+
+ response = qmp("{ 'execute': 'qom-get', 'arguments': { 'path': %s, "
+ "'property': 'temperature' } }", id);
+ g_assert(qdict_haskey(response, "return"));
+ ret = qdict_get_int(response, "return");
+ QDECREF(response);
+ return ret;
+}
+
+static void qmp_tmp105_set_temperature(const char *id, int value)
+{
+ QDict *response;
+
+ response = qmp("{ 'execute': 'qom-set', 'arguments': { 'path': %s, "
+ "'property': 'temperature', 'value': %d } }", id, value);
+ g_assert(qdict_haskey(response, "return"));
+ QDECREF(response);
+}
+
+#define TMP105_PRECISION (1000/16)
+static void send_and_receive(void)
+{
+ uint16_t value;
+
+ value = qmp_tmp105_get_temperature(TMP105_TEST_ID);
+ g_assert_cmpuint(value, ==, 0);
+
+ value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE);
+ g_assert_cmphex(value, ==, 0);
+
+ qmp_tmp105_set_temperature(TMP105_TEST_ID, 20000);
+ value = qmp_tmp105_get_temperature(TMP105_TEST_ID);
+ g_assert_cmpuint(value, ==, 20000);
+
+ value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE);
+ g_assert_cmphex(value, ==, 0x1400);
+
+ qmp_tmp105_set_temperature(TMP105_TEST_ID, 20938); /* 20 + 15/16 */
+ value = qmp_tmp105_get_temperature(TMP105_TEST_ID);
+ g_assert_cmpuint(value, >=, 20938 - TMP105_PRECISION/2);
+ g_assert_cmpuint(value, <, 20938 + TMP105_PRECISION/2);
+
+ /* Set config */
+ tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x60);
+ value = tmp105_get8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG);
+ g_assert_cmphex(value, ==, 0x60);
+
+ value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE);
+ g_assert_cmphex(value, ==, 0x14f0);
+
+ /* Set precision to 9, 10, 11 bits. */
+ tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x00);
+ value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE);
+ g_assert_cmphex(value, ==, 0x1480);
+
+ tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x20);
+ value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE);
+ g_assert_cmphex(value, ==, 0x14c0);
+
+ tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x40);
+ value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE);
+ g_assert_cmphex(value, ==, 0x14e0);
+
+ /* stored precision remains the same */
+ value = qmp_tmp105_get_temperature(TMP105_TEST_ID);
+ g_assert_cmpuint(value, >=, 20938 - TMP105_PRECISION/2);
+ g_assert_cmpuint(value, <, 20938 + TMP105_PRECISION/2);
+
+ tmp105_set8(i2c, TMP105_TEST_ADDR, TMP105_REG_CONFIG, 0x60);
+ value = tmp105_get16(i2c, TMP105_TEST_ADDR, TMP105_REG_TEMPERATURE);
+ g_assert_cmphex(value, ==, 0x14f0);
+
+ tmp105_set16(i2c, TMP105_TEST_ADDR, TMP105_REG_T_LOW, 0x1234);
+ tmp105_set16(i2c, TMP105_TEST_ADDR, TMP105_REG_T_HIGH, 0x4231);
+}
+
+int main(int argc, char **argv)
+{
+ QTestState *s = NULL;
+ int ret;
+
+ g_test_init(&argc, &argv, NULL);
+
+ s = qtest_start("-machine n800 "
+ "-device tmp105,bus=i2c-bus.0,id=" TMP105_TEST_ID
+ ",address=0x49");
+ i2c = omap_i2c_create(OMAP2_I2C_1_BASE);
+
+ qtest_add_func("/tmp105/tx-rx", send_and_receive);
+
+ ret = g_test_run();
+
+ if (s) {
+ qtest_quit(s);
+ }
+ g_free(i2c);
+
+ return ret;
+}