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[RFC,5/5] simple test case for the I2C alias functionality

Message ID 20191231161400.1688-6-wsa+renesas@sang-engineering.com
State RFC
Headers show
Series i2c: implement mechanism to retrieve an alias device | expand

Commit Message

Wolfram Sang Dec. 31, 2019, 4:14 p.m. UTC 
Not for upstream!

Not-Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/i2c/i2c-core-base.c |  2 +-
 sound/soc/codecs/ak4642.c   | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index 0cc4a5c49a15..97d3e9f8dfa7 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -1307,7 +1307,7 @@  static int i2c_register_adapter(struct i2c_adapter *adap)
 		adap->lock_ops = &i2c_adapter_lock_ops;
 
 	adap->locked_flags = 0;
-	adap->alias_idx = 0x08;	/* first valid I2C address */
+	adap->alias_idx = 0x3e;	/* first valid I2C address */
 	rt_mutex_init(&adap->bus_lock);
 	rt_mutex_init(&adap->mux_lock);
 	mutex_init(&adap->userspace_clients_lock);
diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c
index 353237025514..d34476b80b41 100644
--- a/sound/soc/codecs/ak4642.c
+++ b/sound/soc/codecs/ak4642.c
@@ -639,6 +639,25 @@  static int ak4642_i2c_probe(struct i2c_client *i2c,
 	struct regmap *regmap;
 	struct ak4642_priv *priv;
 	struct clk *mcko = NULL;
+struct i2c_client *test, *test2, *test3;
+
+test = i2c_new_alias_device(i2c->adapter);
+printk(KERN_INFO "****** wsa: %08x %08x\n", test->addr, i2c->adapter->alias_idx);
+
+test2 = i2c_new_alias_device(i2c->adapter);
+printk(KERN_INFO "****** wsa: %08x %08x\n", test2->addr, i2c->adapter->alias_idx);
+
+//i2c_unregister_device(test2);
+//printk(KERN_INFO "****** wsa: %08x %08x\n", test2->addr, i2c->adapter->alias_idx);
+
+i2c_unregister_device(test);
+printk(KERN_INFO "****** wsa: %08x %08x\n", test->addr, i2c->adapter->alias_idx);
+
+test = i2c_new_alias_device(i2c->adapter);
+printk(KERN_INFO "****** wsa: %08x %08x\n", test->addr, i2c->adapter->alias_idx);
+
+test3 = i2c_new_alias_device(i2c->adapter);
+printk(KERN_INFO "****** wsa: %08x %08x\n", test3->addr, i2c->adapter->alias_idx);
 
 	if (np) {
 		const struct of_device_id *of_id;
@@ -659,6 +678,7 @@  static int ak4642_i2c_probe(struct i2c_client *i2c,
 		return -EINVAL;
 	}
 
+
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;