xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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 <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang
2015-07-27 14:03:38 +02:00
committed by Wolfram Sang
parent 9bccc70a12
commit cfa0327b0d
3 changed files with 21 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/i2c/i2c-core.c
View File

@@ -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);