21 static void i2c_dw_configure_fifo_slave(struct dw_i2c_dev *dev)  in i2c_dw_configure_fifo_slave()  argument
24 	regmap_write(dev->map, DW_IC_TX_TL, 0);  in i2c_dw_configure_fifo_slave()
25 	regmap_write(dev->map, DW_IC_RX_TL, 0);  in i2c_dw_configure_fifo_slave()
28 	regmap_write(dev->map, DW_IC_CON, dev->slave_cfg);  in i2c_dw_configure_fifo_slave()
29 	regmap_write(dev->map, DW_IC_INTR_MASK, DW_IC_INTR_SLAVE_MASK);  in i2c_dw_configure_fifo_slave()
40 static int i2c_dw_init_slave(struct dw_i2c_dev *dev)  in i2c_dw_init_slave()  argument
44 	ret = i2c_dw_acquire_lock(dev);  in i2c_dw_init_slave()
49 	__i2c_dw_disable(dev);  in i2c_dw_init_slave()
52 	if (dev->sda_hold_time)  in i2c_dw_init_slave()
53 		regmap_write(dev->map, DW_IC_SDA_HOLD, dev->sda_hold_time);  in i2c_dw_init_slave()
55 	i2c_dw_configure_fifo_slave(dev);  in i2c_dw_init_slave()
56 	i2c_dw_release_lock(dev);  in i2c_dw_init_slave()
63 	struct dw_i2c_dev *dev = i2c_get_adapdata(slave->adapter);  in i2c_dw_reg_slave()  local
65 	if (dev->slave)  in i2c_dw_reg_slave()
69 	pm_runtime_get_sync(dev->dev);  in i2c_dw_reg_slave()
75 	__i2c_dw_disable_nowait(dev);  in i2c_dw_reg_slave()
76 	regmap_write(dev->map, DW_IC_SAR, slave->addr);  in i2c_dw_reg_slave()
77 	dev->slave = slave;  in i2c_dw_reg_slave()
79 	__i2c_dw_enable(dev);  in i2c_dw_reg_slave()
81 	dev->status = 0;  in i2c_dw_reg_slave()
88 	struct dw_i2c_dev *dev = i2c_get_adapdata(slave->adapter);  in i2c_dw_unreg_slave()  local
90 	regmap_write(dev->map, DW_IC_INTR_MASK, 0);  in i2c_dw_unreg_slave()
91 	dev->disable(dev);  in i2c_dw_unreg_slave()
92 	synchronize_irq(dev->irq);  in i2c_dw_unreg_slave()
93 	dev->slave = NULL;  in i2c_dw_unreg_slave()
94 	pm_runtime_put(dev->dev);  in i2c_dw_unreg_slave()
99 static u32 i2c_dw_read_clear_intrbits_slave(struct dw_i2c_dev *dev)  in i2c_dw_read_clear_intrbits_slave()  argument
115 	regmap_read(dev->map, DW_IC_INTR_STAT, &stat);  in i2c_dw_read_clear_intrbits_slave()
125 		regmap_read(dev->map, DW_IC_CLR_TX_ABRT, &dummy);  in i2c_dw_read_clear_intrbits_slave()
127 		regmap_read(dev->map, DW_IC_CLR_RX_UNDER, &dummy);  in i2c_dw_read_clear_intrbits_slave()
129 		regmap_read(dev->map, DW_IC_CLR_RX_OVER, &dummy);  in i2c_dw_read_clear_intrbits_slave()
131 		regmap_read(dev->map, DW_IC_CLR_TX_OVER, &dummy);  in i2c_dw_read_clear_intrbits_slave()
133 		regmap_read(dev->map, DW_IC_CLR_RX_DONE, &dummy);  in i2c_dw_read_clear_intrbits_slave()
135 		regmap_read(dev->map, DW_IC_CLR_ACTIVITY, &dummy);  in i2c_dw_read_clear_intrbits_slave()
137 		regmap_read(dev->map, DW_IC_CLR_STOP_DET, &dummy);  in i2c_dw_read_clear_intrbits_slave()
139 		regmap_read(dev->map, DW_IC_CLR_START_DET, &dummy);  in i2c_dw_read_clear_intrbits_slave()
141 		regmap_read(dev->map, DW_IC_CLR_GEN_CALL, &dummy);  in i2c_dw_read_clear_intrbits_slave()
152 	struct dw_i2c_dev *dev = dev_id;  in i2c_dw_isr_slave()  local
156 	regmap_read(dev->map, DW_IC_ENABLE, &enabled);  in i2c_dw_isr_slave()
157 	regmap_read(dev->map, DW_IC_RAW_INTR_STAT, &raw_stat);  in i2c_dw_isr_slave()
158 	regmap_read(dev->map, DW_IC_STATUS, &tmp);  in i2c_dw_isr_slave()
161 	if (!enabled || !(raw_stat & ~DW_IC_INTR_ACTIVITY) || !dev->slave)  in i2c_dw_isr_slave()
164 	stat = i2c_dw_read_clear_intrbits_slave(dev);  in i2c_dw_isr_slave()
165 	dev_dbg(dev->dev,  in i2c_dw_isr_slave()
170 		if (!(dev->status & STATUS_WRITE_IN_PROGRESS)) {  in i2c_dw_isr_slave()
171 			dev->status |= STATUS_WRITE_IN_PROGRESS;  in i2c_dw_isr_slave()
172 			dev->status &= ~STATUS_READ_IN_PROGRESS;  in i2c_dw_isr_slave()
173 			i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_REQUESTED,  in i2c_dw_isr_slave()
178 			regmap_read(dev->map, DW_IC_DATA_CMD, &tmp);  in i2c_dw_isr_slave()
180 				i2c_slave_event(dev->slave,  in i2c_dw_isr_slave()
184 			i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_RECEIVED,  in i2c_dw_isr_slave()
186 			regmap_read(dev->map, DW_IC_STATUS, &tmp);  in i2c_dw_isr_slave()
192 			regmap_read(dev->map, DW_IC_CLR_RD_REQ, &tmp);  in i2c_dw_isr_slave()
194 			if (!(dev->status & STATUS_READ_IN_PROGRESS)) {  in i2c_dw_isr_slave()
195 				i2c_slave_event(dev->slave,  in i2c_dw_isr_slave()
198 				dev->status |= STATUS_READ_IN_PROGRESS;  in i2c_dw_isr_slave()
199 				dev->status &= ~STATUS_WRITE_IN_PROGRESS;  in i2c_dw_isr_slave()
201 				i2c_slave_event(dev->slave,  in i2c_dw_isr_slave()
205 			regmap_write(dev->map, DW_IC_DATA_CMD, val);  in i2c_dw_isr_slave()
210 		i2c_slave_event(dev->slave, I2C_SLAVE_STOP, &val);  in i2c_dw_isr_slave()
221 void i2c_dw_configure_slave(struct dw_i2c_dev *dev)  in i2c_dw_configure_slave()  argument
223 	dev->functionality = I2C_FUNC_SLAVE;  in i2c_dw_configure_slave()
225 	dev->slave_cfg = DW_IC_CON_RX_FIFO_FULL_HLD_CTRL |  in i2c_dw_configure_slave()
228 	dev->mode = DW_IC_SLAVE;  in i2c_dw_configure_slave()
232 int i2c_dw_probe_slave(struct dw_i2c_dev *dev)  in i2c_dw_probe_slave()  argument
234 	struct i2c_adapter *adap = &dev->adapter;  in i2c_dw_probe_slave()
237 	dev->init = i2c_dw_init_slave;  in i2c_dw_probe_slave()
238 	dev->disable = i2c_dw_disable;  in i2c_dw_probe_slave()
240 	ret = i2c_dw_init_regmap(dev);  in i2c_dw_probe_slave()
244 	ret = i2c_dw_set_sda_hold(dev);  in i2c_dw_probe_slave()
248 	ret = i2c_dw_set_fifo_size(dev);  in i2c_dw_probe_slave()
252 	ret = dev->init(dev);  in i2c_dw_probe_slave()
260 	adap->dev.parent = dev->dev;  in i2c_dw_probe_slave()
261 	i2c_set_adapdata(adap, dev);  in i2c_dw_probe_slave()
263 	ret = devm_request_irq(dev->dev, dev->irq, i2c_dw_isr_slave,  in i2c_dw_probe_slave()
264 			       IRQF_SHARED, dev_name(dev->dev), dev);  in i2c_dw_probe_slave()
266 		dev_err(dev->dev, "failure requesting irq %i: %d\n",  in i2c_dw_probe_slave()
267 			dev->irq, ret);  in i2c_dw_probe_slave()
273 		dev_err(dev->dev, "failure adding adapter: %d\n", ret);  in i2c_dw_probe_slave()