i2c/busses/i2c-designware-core.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  * Synopsys DesignWare I2C adapter driver.
5  * Based on the TI DAVINCI I2C adapter driver.
17 #include <linux/i2c.h>
183  * struct dw_i2c_dev - private i2c-designware data
192  * @slave: represent an I2C slave device
205  * @status: i2c master status, one of STATUS_*
207  * @irq: interrupt number for the i2c master
208  * @adapter: i2c subsystem adapter node
212  * @rx_outstanding: current master-rx elements in tx fifo
217  * @fs_hcnt: fast speed HCNT value
218  * @fs_lcnt: fast speed LCNT value
219  * @fp_hcnt: fast plus HCNT value
220  * @fp_lcnt: fast plus LCNT value
228  * @init: function to initialize the I2C hardware
229  * @mode: operation mode - DW_IC_MASTER or DW_IC_SLAVE
286 	int			mode;  member
315 	regmap_write(dev->map, DW_IC_ENABLE, 1);  in __i2c_dw_enable()
320 	regmap_write(dev->map, DW_IC_ENABLE, 0);  in __i2c_dw_disable_nowait()
333 static inline int i2c_dw_probe_slave(struct dw_i2c_dev *dev) { return -EINVAL; }  in i2c_dw_probe_slave()
338 	switch (dev->mode) {  in i2c_dw_probe()
344 		dev_err(dev->dev, "Wrong operation mode: %d\n", dev->mode);  in i2c_dw_probe()
345 		return -EINVAL;  in i2c_dw_probe()
351 	if (i2c_detect_slave_mode(dev->dev))  in i2c_dw_configure()
369 static inline int i2c_dw_acpi_configure(struct device *device) { return -ENODEV; }  in i2c_dw_acpi_configure()