17 static inline u32 saa7146_i2c_status(struct saa7146_dev *dev)  in saa7146_i2c_status()  argument
19 	u32 iicsta = saa7146_read(dev, I2C_STATUS);  in saa7146_i2c_status()
112 static int saa7146_i2c_reset(struct saa7146_dev *dev)  in saa7146_i2c_reset()  argument
115 	u32 status = saa7146_i2c_status(dev);  in saa7146_i2c_reset()
118 	saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate);  in saa7146_i2c_reset()
119 	saa7146_write(dev, I2C_TRANSFER, 0);  in saa7146_i2c_reset()
128 		saa7146_write(dev, I2C_STATUS, (dev->i2c_bitrate | MASK_07));  in saa7146_i2c_reset()
129 		saa7146_write(dev, MC2, (MASK_00 | MASK_16));  in saa7146_i2c_reset()
133 		saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate);  in saa7146_i2c_reset()
134 		saa7146_write(dev, MC2, (MASK_00 | MASK_16));  in saa7146_i2c_reset()
139 	status = saa7146_i2c_status(dev);  in saa7146_i2c_reset()
141 	if ( dev->i2c_bitrate != status ) {  in saa7146_i2c_reset()
147 		saa7146_write(dev, I2C_STATUS, (dev->i2c_bitrate | MASK_07));  in saa7146_i2c_reset()
148 		saa7146_write(dev, MC2, (MASK_00 | MASK_16));  in saa7146_i2c_reset()
152 		saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate);  in saa7146_i2c_reset()
153 		saa7146_write(dev, MC2, (MASK_00 | MASK_16));  in saa7146_i2c_reset()
158 		saa7146_write(dev, I2C_STATUS, dev->i2c_bitrate);  in saa7146_i2c_reset()
159 		saa7146_write(dev, MC2, (MASK_00 | MASK_16));  in saa7146_i2c_reset()
164 	status = saa7146_i2c_status(dev);  in saa7146_i2c_reset()
165 	if ( dev->i2c_bitrate != status ) {  in saa7146_i2c_reset()
176 static int saa7146_i2c_writeout(struct saa7146_dev *dev, __le32 *dword, int short_delay)  in saa7146_i2c_writeout()  argument
184 		*dword, saa7146_read(dev, I2C_STATUS), dev->i2c_op);  in saa7146_i2c_writeout()
186 	if( 0 != (SAA7146_USE_I2C_IRQ & dev->ext->flags)) {  in saa7146_i2c_writeout()
188 		saa7146_write(dev, I2C_STATUS,	 dev->i2c_bitrate);  in saa7146_i2c_writeout()
189 		saa7146_write(dev, I2C_TRANSFER, le32_to_cpu(*dword));  in saa7146_i2c_writeout()
191 		dev->i2c_op = 1;  in saa7146_i2c_writeout()
192 		SAA7146_ISR_CLEAR(dev, MASK_16|MASK_17);  in saa7146_i2c_writeout()
193 		SAA7146_IER_ENABLE(dev, MASK_16|MASK_17);  in saa7146_i2c_writeout()
194 		saa7146_write(dev, MC2, (MASK_00 | MASK_16));  in saa7146_i2c_writeout()
197 		timeout = wait_event_interruptible_timeout(dev->i2c_wq, dev->i2c_op == 0, timeout);  in saa7146_i2c_writeout()
198 		if (timeout == -ERESTARTSYS || dev->i2c_op) {  in saa7146_i2c_writeout()
199 			SAA7146_IER_DISABLE(dev, MASK_16|MASK_17);  in saa7146_i2c_writeout()
200 			SAA7146_ISR_CLEAR(dev, MASK_16|MASK_17);  in saa7146_i2c_writeout()
206 				dev->name, __func__);  in saa7146_i2c_writeout()
209 		status = saa7146_read(dev, I2C_STATUS);  in saa7146_i2c_writeout()
211 		saa7146_write(dev, I2C_STATUS,	 dev->i2c_bitrate);  in saa7146_i2c_writeout()
212 		saa7146_write(dev, I2C_TRANSFER, le32_to_cpu(*dword));  in saa7146_i2c_writeout()
213 		saa7146_write(dev, MC2, (MASK_00 | MASK_16));  in saa7146_i2c_writeout()
218 			mc2 = (saa7146_read(dev, MC2) & 0x1);  in saa7146_i2c_writeout()
224 					dev->name, __func__);  in saa7146_i2c_writeout()
231 		saa7146_i2c_status(dev);  in saa7146_i2c_writeout()
233 			status = saa7146_i2c_status(dev);  in saa7146_i2c_writeout()
241 					dev->name, __func__);  in saa7146_i2c_writeout()
285 	*dword = cpu_to_le32(saa7146_read(dev, I2C_TRANSFER));  in saa7146_i2c_writeout()
291 static int saa7146_i2c_transfer(struct saa7146_dev *dev, const struct i2c_msg *msgs, int num, int r…  in saa7146_i2c_transfer()  argument
294 	__le32 *buffer = dev->d_i2c.cpu_addr;  in saa7146_i2c_transfer()
298 	if (mutex_lock_interruptible(&dev->i2c_lock))  in saa7146_i2c_transfer()
312 	if ( count > 3 || 0 != (SAA7146_I2C_SHORT_DELAY & dev->ext->flags) )  in saa7146_i2c_transfer()
317 		err = saa7146_i2c_reset(dev);  in saa7146_i2c_transfer()
325 			err = saa7146_i2c_writeout(dev, &buffer[i], short_delay);  in saa7146_i2c_transfer()
337 				if (-EREMOTEIO == err && 0 != (SAA7146_USE_I2C_IRQ & dev->ext->flags))  in saa7146_i2c_transfer()
369 	if( 0 == dev->revision ) {  in saa7146_i2c_transfer()
371 		saa7146_i2c_reset(dev);  in saa7146_i2c_transfer()
372 		if( 0 != saa7146_i2c_writeout(dev, &zero, short_delay)) {  in saa7146_i2c_transfer()
377 	mutex_unlock(&dev->i2c_lock);  in saa7146_i2c_transfer()
385 	struct saa7146_dev *dev = to_saa7146_dev(v4l2_dev);  in saa7146_i2c_xfer()  local
388 	return saa7146_i2c_transfer(dev, msg, num, adapter->retries);  in saa7146_i2c_xfer()
401 int saa7146_i2c_adapter_prepare(struct saa7146_dev *dev, struct i2c_adapter *i2c_adapter, u32 bitra…  in saa7146_i2c_adapter_prepare()  argument
406 	saa7146_write(dev, MC1, (MASK_08 | MASK_24));  in saa7146_i2c_adapter_prepare()
408 	dev->i2c_bitrate = bitrate;  in saa7146_i2c_adapter_prepare()
409 	saa7146_i2c_reset(dev);  in saa7146_i2c_adapter_prepare()
412 		i2c_set_adapdata(i2c_adapter, &dev->v4l2_dev);  in saa7146_i2c_adapter_prepare()
413 		i2c_adapter->dev.parent    = &dev->pci->dev;  in saa7146_i2c_adapter_prepare()