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@@ -18,8 +18,8 @@
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DECLARE_GLOBAL_DATA_PTR;
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-struct dm_sandbox_i2c_emul_priv {
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- struct udevice *emul;
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+struct sandbox_i2c_priv {
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+ bool test_mode;
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};
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static int get_emul(struct udevice *dev, struct udevice **devp,
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@@ -47,17 +47,25 @@ static int get_emul(struct udevice *dev, struct udevice **devp,
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return 0;
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}
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+void sandbox_i2c_set_test_mode(struct udevice *bus, bool test_mode)
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+{
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+ struct sandbox_i2c_priv *priv = dev_get_priv(bus);
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+
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+ priv->test_mode = test_mode;
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+}
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+
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static int sandbox_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
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int nmsgs)
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{
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struct dm_i2c_bus *i2c = dev_get_uclass_priv(bus);
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+ struct sandbox_i2c_priv *priv = dev_get_priv(bus);
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struct dm_i2c_ops *ops;
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struct udevice *emul, *dev;
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bool is_read;
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int ret;
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/* Special test code to return success but with no emulation */
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- if (msg->addr == SANDBOX_I2C_TEST_ADDR)
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+ if (priv->test_mode && msg->addr == SANDBOX_I2C_TEST_ADDR)
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return 0;
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ret = i2c_get_chip(bus, msg->addr, 1, &dev);
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@@ -68,15 +76,18 @@ static int sandbox_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
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if (ret)
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return ret;
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- /*
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- * For testing, don't allow writing above 100KHz for writes and
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- * 400KHz for reads
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- */
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- is_read = nmsgs > 1;
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- if (i2c->speed_hz > (is_read ? 400000 : 100000)) {
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- debug("%s: Max speed exceeded\n", __func__);
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- return -EINVAL;
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+ if (priv->test_mode) {
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+ /*
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+ * For testing, don't allow writing above 100KHz for writes and
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+ * 400KHz for reads.
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+ */
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+ is_read = nmsgs > 1;
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+ if (i2c->speed_hz > (is_read ? 400000 : 100000)) {
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+ debug("%s: Max speed exceeded\n", __func__);
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+ return -EINVAL;
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+ }
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}
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+
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return ops->xfer(emul, msg, nmsgs);
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}
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@@ -94,4 +105,5 @@ U_BOOT_DRIVER(i2c_sandbox) = {
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.id = UCLASS_I2C,
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.of_match = sandbox_i2c_ids,
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.ops = &sandbox_i2c_ops,
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+ .priv_auto_alloc_size = sizeof(struct sandbox_i2c_priv),
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};
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