1I2C_NEW_SECONDARY_DE(9) I2C and SMBus Subsystem I2C_NEW_SECONDARY_DE(9)
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6 i2c_new_secondary_device - Helper to get the instantiated secondary
7 address and create the associated device
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10 struct i2c_client *
11 i2c_new_secondary_device(struct i2c_client * client,
12 const char * name,
13 u16 default_addr);
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16 client
17 Handle to the primary client
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19 name
20 Handle to specify which secondary address to get
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22 default_addr
23 Used as a fallback if no secondary address was specified
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26 can sleep
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29 I2C clients can be composed of multiple I2C slaves bound together in a
30 single component. The I2C client driver then binds to the master I2C
31 slave and needs to create I2C dummy clients to communicate with all the
32 other slaves.
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34 This function creates and returns an I2C dummy client whose I2C address
35 is retrieved from the platform firmware based on the given slave name.
36 If no address is specified by the firmware default_addr is used.
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38 On DT-based platforms the address is retrieved from the “reg” property
39 entry cell whose “reg-names” value matches the slave name.
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41 This returns the new i2c client, which should be saved for later use
42 with i2c_unregister_device; or NULL to indicate an error.
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45Kernel Hackers Manual 3.10 June 2019 I2C_NEW_SECONDARY_DE(9)