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#ifndef __INCLUDED_TEA6420__ #define __INCLUDED_TEA6420__ /* possible addresses */ #define I2C_TEA6420_1 0x4c #define I2C_TEA6420_2 0x4d struct tea6420_multiplex { int in; /* input of audio switch */ int out; /* output of audio switch */ int gain; /* gain of connection */ }; #define TEA6420_SWITCH _IOW('v',1,struct tea6420_multiplex) #endif