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of/unittest: convert to use an explicit i2c mux core 

Allocate an explicit i2c mux core to handle parent and child adapters
etc. Update the select op to be in terms of the i2c mux core instead
of the child adapter.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Peter Rosin 2016-04-20 08:42:47 +02:00 committed by Wolfram Sang
parent 05e0dfd031
commit b6e3b7171b
1 changed files with 12 additions and 25 deletions
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37
drivers/of/unittest.c
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@ -1692,13 +1692,7 @@ static struct i2c_driver unittest_i2c_dev_driver = {
#if IS_BUILTIN(CONFIG_I2C_MUX)
struct unittest_i2c_mux_data {
int nchans;
struct i2c_adapter *adap[];
};
static int unittest_i2c_mux_select_chan(struct i2c_adapter *adap,
void *client, u32 chan)
static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
{
return 0;
}
@ -1706,11 +1700,11 @@ static int unittest_i2c_mux_select_chan(struct i2c_adapter *adap,
static int unittest_i2c_mux_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int ret, i, nchans, size;
int ret, i, nchans;
struct device *dev = &client->dev;
struct i2c_adapter *adap = to_i2c_adapter(dev->parent);
struct device_node *np = client->dev.of_node, *child;
struct unittest_i2c_mux_data *stm;
struct i2c_mux_core *muxc;
u32 reg, max_reg;
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
@ -1734,25 +1728,20 @@ static int unittest_i2c_mux_probe(struct i2c_client *client,
return -EINVAL;
}
size = offsetof(struct unittest_i2c_mux_data, adap[nchans]);
stm = devm_kzalloc(dev, size, GFP_KERNEL);
if (!stm) {
dev_err(dev, "Out of memory\n");
muxc = i2c_mux_alloc(adap, dev, nchans, 0, 0,
unittest_i2c_mux_select_chan, NULL);
if (!muxc)
return -ENOMEM;
}
stm->nchans = nchans;
for (i = 0; i < nchans; i++) {
stm->adap[i] = i2c_add_mux_adapter(adap, dev, client,
0, i, 0, unittest_i2c_mux_select_chan, NULL);
if (!stm->adap[i]) {
ret = i2c_mux_add_adapter(muxc, 0, i, 0);
if (ret) {
dev_err(dev, "Failed to register mux #%d\n", i);
for (i--; i >= 0; i--)
i2c_del_mux_adapter(stm->adap[i]);
i2c_mux_del_adapters(muxc);
return -ENODEV;
}
}
i2c_set_clientdata(client, stm);
i2c_set_clientdata(client, muxc);
return 0;
};
@ -1761,12 +1750,10 @@ static int unittest_i2c_mux_remove(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct device_node *np = client->dev.of_node;
struct unittest_i2c_mux_data *stm = i2c_get_clientdata(client);
int i;
struct i2c_mux_core *muxc = i2c_get_clientdata(client);
dev_dbg(dev, "%s for node @%s\n", __func__, np->full_name);
for (i = stm->nchans - 1; i >= 0; i--)
i2c_del_mux_adapter(stm->adap[i]);
i2c_mux_del_adapters(muxc);
return 0;
}