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libqos: convert I2C to qgraph

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Create an i2c-bus interface, corresponding to the I2CAdapter struct.
Wrap IMXI2C and OMAPI2C with a QOSGraphObject, and add the get_driver
function to retrieve the I2CAdapter.

The conversion is still not complete; for simplicity, i2c_recv and
i2c_send (along with their wrappers) still take an adapter/address
pair.  Fixing that would be complicated until the tests are converted
to qgraph, so it is left for after the conversion.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2019-03-18 13:48:23 +01:00
parent 732c919cf0
commit c0825c63cf
5 changed files with 83 additions and 8 deletions
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40
tests/libqos/i2c-omap.c
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@ -155,20 +155,36 @@ static void omap_i2c_recv(I2CAdapter *i2c, uint8_t addr,
g_assert((data & OMAP_I2C_CON_STP) == 0);
}
void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr)
static void *omap_i2c_get_driver(void *obj, const char *interface)
{
I2CAdapter *i2c = (I2CAdapter *)s;
OMAPI2C *s = obj;
if (!g_strcmp0(interface, "i2c-bus")) {
return &s->parent;
}
fprintf(stderr, "%s not present in omap_i2c\n", interface);
g_assert_not_reached();
}
static void omap_i2c_start_hw(QOSGraphObject *object)
{
OMAPI2C *s = (OMAPI2C *) object;
uint16_t data;
/* verify the mmio address by looking for a known signature */
data = qtest_readw(s->parent.qts, s->addr + OMAP_I2C_REV);
g_assert_cmphex(data, ==, 0x34);
}
void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr)
{
s->addr = addr;
i2c->send = omap_i2c_send;
i2c->recv = omap_i2c_recv;
i2c->qts = qts;
s->obj.get_driver = omap_i2c_get_driver;
s->obj.start_hw = omap_i2c_start_hw;
/* verify the mmio address by looking for a known signature */
data = qtest_readw(qts, addr + OMAP_I2C_REV);
g_assert_cmphex(data, ==, 0x34);
s->parent.send = omap_i2c_send;
s->parent.recv = omap_i2c_recv;
s->parent.qts = qts;
}
I2CAdapter *omap_i2c_create(QTestState *qts, uint64_t addr)
@ -189,3 +205,11 @@ void omap_i2c_free(I2CAdapter *i2c)
s = container_of(i2c, OMAPI2C, parent);
g_free(s);
}
static void omap_i2c_register_nodes(void)
{
qos_node_create_driver("omap_i2c", NULL);
qos_node_produces("omap_i2c", "i2c-bus");
}
libqos_init(omap_i2c_register_nodes);