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i2c: support 10 bit and slave addresses in sysfs 'new_device'

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We now have seperate address spaces for 10 bit and we-are-slave clients.
Update the sysfs device instantiation method to support these types by
accepting the address offsets that are assigned to the extra address
spaces. Update the documentation, too.

Signed-off-by: Wolfram Sang <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
This commit is contained in:
Wolfram Sang 2015-07-27 14:03:38 +02:00 • committed by Wolfram Sang
commit cfa0327b0d
3 changed files with 21 additions and 4 deletions
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12
drivers/i2c/i2c-core.c
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@ -1158,6 +1158,16 @@ i2c_sysfs_new_device(struct device *dev, struct device_attribute *attr,
return -EINVAL;
}
if ((info.addr & I2C_ADDR_OFFSET_TEN_BIT) == I2C_ADDR_OFFSET_TEN_BIT) {
info.addr &= ~I2C_ADDR_OFFSET_TEN_BIT;
info.flags |= I2C_CLIENT_TEN;
}
if (info.addr & I2C_ADDR_OFFSET_SLAVE) {
info.addr &= ~I2C_ADDR_OFFSET_SLAVE;
info.flags |= I2C_CLIENT_SLAVE;
}
client = i2c_new_device(adap, &info);
if (!client)
return -EINVAL;
@ -1209,7 +1219,7 @@ i2c_sysfs_delete_device(struct device *dev, struct device_attribute *attr,
i2c_adapter_depth(adap));
list_for_each_entry_safe(client, next, &adap->userspace_clients,
detected) {
if (client->addr == addr) {
if (i2c_encode_flags_to_addr(client) == addr) {
dev_info(dev, "%s: Deleting device %s at 0x%02hx\n",
"delete_device", client->name, client->addr);