Messages in this thread | | | Date | Fri, 18 Apr 2014 19:08:10 +0200 | From | Lars-Peter Clausen <> | Subject | Re: [PATCH v2 2/2] regmap: i2c: fallback to SMBus if the adapter does not support standard I2C |
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> +const struct regmap_bus *regmap_get_i2c_bus(struct i2c_client *i2c, > + const struct regmap_config *config) > +{ > + if (i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C)) > + return ®map_i2c; > + else if (config->val_bits == 16 && > + i2c_check_functionality(i2c->adapter, > + I2C_FUNC_SMBUS_WORD_DATA)) > + return ®map_smbus_word; > + else if (config->val_bits == 8 && > + i2c_check_functionality(i2c->adapter, > + I2C_FUNC_SMBUS_BYTE_DATA)) > + return ®map_smbus_byte;
The fallback code should also check that reg_bits is 8.
> + > + return ERR_PTR(-ENOTSUPP); > +} > +
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