base/regmap/regmap-sccb.c

1 // SPDX-License-Identifier: GPL-2.0
2 // Register map access API - SCCB support
11  * sccb_is_available - Check if the adapter supports SCCB protocol
31  * regmap_sccb_read - Read data from SCCB slave device
36  * This executes the 2-phase write transmission cycle that is followed by a
37  * 2-phase read transmission cycle, returning negative errno else zero on
47 	i2c_lock_bus(i2c->adapter, I2C_LOCK_SEGMENT);  in regmap_sccb_read()
49 	ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags,  in regmap_sccb_read()
54 	ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags,  in regmap_sccb_read()
61 	i2c_unlock_bus(i2c->adapter, I2C_LOCK_SEGMENT);  in regmap_sccb_read()
67  * regmap_sccb_write - Write data to SCCB slave device
72  * This executes the SCCB 3-phase write transmission cycle, returning negative
91 	if (config->val_bits == 8 && config->reg_bits == 8 &&  in regmap_get_sccb_bus()
92 			sccb_is_available(i2c->adapter))  in regmap_get_sccb_bus()
95 	return ERR_PTR(-ENOTSUPP);  in regmap_get_sccb_bus()
108 	return __regmap_init(&i2c->dev, bus, &i2c->dev, config,  in __regmap_init_sccb()
123 	return __devm_regmap_init(&i2c->dev, bus, &i2c->dev, config,  in __devm_regmap_init_sccb()