147 				 dev->buf_len, dma->direction);  in at91_twi_dma_cleanup()
156 	if (!dev->buf_len)  in at91_twi_write_next_byte()
163 	if (--dev->buf_len == 0) {  in at91_twi_write_next_byte()
169 	dev_dbg(dev->dev, "wrote 0x%x, to go %zu\n", *dev->buf, dev->buf_len);  in at91_twi_write_next_byte()
179 			 dev->buf_len, DMA_TO_DEVICE);  in at91_twi_write_data_dma_callback()
201 	if (!dev->buf_len)  in at91_twi_write_data_dma()
207 	dma_addr = dma_map_single(dev->dev, dev->buf, dev->buf_len,  in at91_twi_write_data_dma()
223 		part1_len = dev->buf_len & ~0x3;  in at91_twi_write_data_dma()
230 		part2_len = dev->buf_len & 0x3;  in at91_twi_write_data_dma()
246 		sg_dma_len(&dma->sg[0]) = dev->buf_len;  in at91_twi_write_data_dma()
277 	if (!dev->buf_len) {  in at91_twi_read_next_byte()
284 	--dev->buf_len;  in at91_twi_read_next_byte()
295 			dev->buf_len += *dev->buf;  in at91_twi_read_next_byte()
296 			dev->msg->len = dev->buf_len + 1;  in at91_twi_read_next_byte()
298 					 dev->buf_len);  in at91_twi_read_next_byte()
302 			dev->buf_len = 1;  in at91_twi_read_next_byte()
307 	if (!dev->use_alt_cmd && dev->buf_len == 1)  in at91_twi_read_next_byte()
310 	dev_dbg(dev->dev, "read 0x%x, to go %zu\n", *dev->buf, dev->buf_len);  in at91_twi_read_next_byte()
321 			 dev->buf_len, DMA_FROM_DEVICE);  in at91_twi_read_data_dma_callback()
325 		dev->buf += dev->buf_len - 2;  in at91_twi_read_data_dma_callback()
326 		dev->buf_len = 2;  in at91_twi_read_data_dma_callback()
338 	size_t buf_len;  in at91_twi_read_data_dma()  local
340 	buf_len = (dev->use_alt_cmd) ? dev->buf_len : dev->buf_len - 2;  in at91_twi_read_data_dma()
345 	dma_addr = dma_map_single(dev->dev, dev->buf, buf_len, DMA_FROM_DEVICE);  in at91_twi_read_data_dma()
353 	if (dev->fifo_size && IS_ALIGNED(buf_len, 4)) {  in at91_twi_read_data_dma()
366 	sg_dma_len(&dma->sg[0]) = buf_len;  in at91_twi_read_data_dma()
526 		(dev->msg->flags & I2C_M_RD) ? "read" : "write", dev->buf_len);  in at91_do_twi_transfer()
549 	if (!dev->buf_len) {  in at91_do_twi_transfer()
556 		if (!dev->use_alt_cmd && dev->buf_len <= 1 &&  in at91_do_twi_transfer()
569 		if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {  in at91_do_twi_transfer()
579 		if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {  in at91_do_twi_transfer()
586 				       (dev->buf_len ? AT91_TWI_TXRDY : 0));  in at91_do_twi_transfer()
701 	dev->buf_len = m_start->len;  in at91_twi_xfer()