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.
15 #include <linux/i2c.h>
192  * struct dw_i2c_dev - private i2c-designware data
202  * @slave: represent an I2C slave device
214  * @status: i2c master status, one of STATUS_*
216  * @sw_mask: SW mask of DW_IC_INTR_MASK used in polling mode
217  * @irq: interrupt number for the i2c master
219  * @adapter: i2c subsystem adapter node
225  * @rx_outstanding: current master-rx elements in tx fifo
230  * @fs_hcnt: fast speed HCNT value
231  * @fs_lcnt: fast speed LCNT value
232  * @fp_hcnt: fast plus HCNT value
233  * @fp_lcnt: fast plus LCNT value
239  *	-1 if there is no semaphore.
241  * @init: function to initialize the I2C hardware
243  * @mode: operation mode - DW_IC_MASTER or DW_IC_SLAVE
300 	int			mode;  member
349 	dev->status |= STATUS_ACTIVE;  in __i2c_dw_enable()
350 	regmap_write(dev->map, DW_IC_ENABLE, 1);  in __i2c_dw_enable()
355 	regmap_write(dev->map, DW_IC_ENABLE, 0);  in __i2c_dw_disable_nowait()
356 	dev->status &= ~STATUS_ACTIVE;  in __i2c_dw_disable_nowait()
362 	unsigned int val = dev->flags & ACCESS_POLLING ? 0 : intr_mask;  in __i2c_dw_write_intr_mask()
364 	regmap_write(dev->map, DW_IC_INTR_MASK, val);  in __i2c_dw_write_intr_mask()
365 	dev->sw_mask = intr_mask;  in __i2c_dw_write_intr_mask()
371 	if (!(dev->flags & ACCESS_POLLING))  in __i2c_dw_read_intr_mask()
372 		regmap_read(dev->map, DW_IC_INTR_MASK, intr_mask);  in __i2c_dw_read_intr_mask()
374 		*intr_mask = dev->sw_mask;  in __i2c_dw_read_intr_mask()
388 static inline int i2c_dw_probe_slave(struct dw_i2c_dev *dev) { return -EINVAL; }  in i2c_dw_probe_slave()
393 	if (i2c_detect_slave_mode(dev->dev))  in i2c_dw_configure()