Lines Matching refs:dev
21 static void i2c_dw_configure_fifo_slave(struct dw_i2c_dev *dev)
24 regmap_write(dev->map, DW_IC_TX_TL, 0);
25 regmap_write(dev->map, DW_IC_RX_TL, 0);
28 regmap_write(dev->map, DW_IC_CON, dev->slave_cfg);
29 regmap_write(dev->map, DW_IC_INTR_MASK, DW_IC_INTR_SLAVE_MASK);
34 * @dev: device private data
40 static int i2c_dw_init_slave(struct dw_i2c_dev *dev)
44 ret = i2c_dw_acquire_lock(dev);
49 __i2c_dw_disable(dev);
52 if (dev->sda_hold_time)
53 regmap_write(dev->map, DW_IC_SDA_HOLD, dev->sda_hold_time);
55 i2c_dw_configure_fifo_slave(dev);
56 i2c_dw_release_lock(dev);
63 struct dw_i2c_dev *dev = i2c_get_adapdata(slave->adapter);
65 if (dev->slave)
69 pm_runtime_get_sync(dev->dev);
75 __i2c_dw_disable_nowait(dev);
76 regmap_write(dev->map, DW_IC_SAR, slave->addr);
77 dev->slave = slave;
79 __i2c_dw_enable(dev);
81 dev->cmd_err = 0;
82 dev->msg_write_idx = 0;
83 dev->msg_read_idx = 0;
84 dev->msg_err = 0;
85 dev->status = STATUS_IDLE;
86 dev->abort_source = 0;
87 dev->rx_outstanding = 0;
94 struct dw_i2c_dev *dev = i2c_get_adapdata(slave->adapter);
96 dev->disable_int(dev);
97 dev->disable(dev);
98 synchronize_irq(dev->irq);
99 dev->slave = NULL;
100 pm_runtime_put(dev->dev);
105 static u32 i2c_dw_read_clear_intrbits_slave(struct dw_i2c_dev *dev)
121 regmap_read(dev->map, DW_IC_INTR_STAT, &stat);
131 regmap_read(dev->map, DW_IC_CLR_TX_ABRT, &dummy);
133 regmap_read(dev->map, DW_IC_CLR_RX_UNDER, &dummy);
135 regmap_read(dev->map, DW_IC_CLR_RX_OVER, &dummy);
137 regmap_read(dev->map, DW_IC_CLR_TX_OVER, &dummy);
139 regmap_read(dev->map, DW_IC_CLR_RX_DONE, &dummy);
141 regmap_read(dev->map, DW_IC_CLR_ACTIVITY, &dummy);
143 regmap_read(dev->map, DW_IC_CLR_STOP_DET, &dummy);
145 regmap_read(dev->map, DW_IC_CLR_START_DET, &dummy);
147 regmap_read(dev->map, DW_IC_CLR_GEN_CALL, &dummy);
157 static int i2c_dw_irq_handler_slave(struct dw_i2c_dev *dev)
162 regmap_read(dev->map, DW_IC_ENABLE, &enabled);
163 regmap_read(dev->map, DW_IC_RAW_INTR_STAT, &raw_stat);
164 regmap_read(dev->map, DW_IC_STATUS, &tmp);
167 if (!enabled || !(raw_stat & ~DW_IC_INTR_ACTIVITY) || !dev->slave)
170 stat = i2c_dw_read_clear_intrbits_slave(dev);
171 dev_dbg(dev->dev,
176 if (dev->status != STATUS_WRITE_IN_PROGRESS) {
177 dev->status = STATUS_WRITE_IN_PROGRESS;
178 i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_REQUESTED,
182 regmap_read(dev->map, DW_IC_DATA_CMD, &tmp);
184 if (!i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_RECEIVED,
186 dev_vdbg(dev->dev, "Byte %X acked!", val);
191 regmap_read(dev->map, DW_IC_CLR_RD_REQ, &tmp);
193 dev->status = STATUS_READ_IN_PROGRESS;
194 if (!i2c_slave_event(dev->slave,
197 regmap_write(dev->map, DW_IC_DATA_CMD, val);
202 if (!i2c_slave_event(dev->slave, I2C_SLAVE_READ_PROCESSED,
204 regmap_read(dev->map, DW_IC_CLR_RX_DONE, &tmp);
208 dev->status = STATUS_IDLE;
209 i2c_slave_event(dev->slave, I2C_SLAVE_STOP, &val);
217 struct dw_i2c_dev *dev = dev_id;
220 ret = i2c_dw_irq_handler_slave(dev);
222 complete(&dev->cmd_complete);
233 void i2c_dw_configure_slave(struct dw_i2c_dev *dev)
235 dev->functionality = I2C_FUNC_SLAVE | DW_IC_DEFAULT_FUNCTIONALITY;
237 dev->slave_cfg = DW_IC_CON_RX_FIFO_FULL_HLD_CTRL |
240 dev->mode = DW_IC_SLAVE;
244 int i2c_dw_probe_slave(struct dw_i2c_dev *dev)
246 struct i2c_adapter *adap = &dev->adapter;
249 init_completion(&dev->cmd_complete);
251 dev->init = i2c_dw_init_slave;
252 dev->disable = i2c_dw_disable;
253 dev->disable_int = i2c_dw_disable_int;
255 ret = i2c_dw_init_regmap(dev);
259 ret = i2c_dw_set_sda_hold(dev);
263 ret = i2c_dw_set_fifo_size(dev);
267 ret = dev->init(dev);
275 adap->dev.parent = dev->dev;
276 i2c_set_adapdata(adap, dev);
278 ret = devm_request_irq(dev->dev, dev->irq, i2c_dw_isr_slave,
279 IRQF_SHARED, dev_name(dev->dev), dev);
281 dev_err(dev->dev, "failure requesting irq %i: %d\n",
282 dev->irq, ret);
288 dev_err(dev->dev, "failure adding adapter: %d\n", ret);