132 	size_t buf_len;  member
226 				 dev->buf_len, dma->direction);  in at91_twi_dma_cleanup()
235 	if (!dev->buf_len)  in at91_twi_write_next_byte()
242 	if (--dev->buf_len == 0)  in at91_twi_write_next_byte()
246 	dev_dbg(dev->dev, "wrote 0x%x, to go %d\n", *dev->buf, dev->buf_len);  in at91_twi_write_next_byte()
256 			 dev->buf_len, DMA_TO_DEVICE);  in at91_twi_write_data_dma_callback()
278 	if (!dev->buf_len)  in at91_twi_write_data_dma()
284 	dma_addr = dma_map_single(dev->dev, dev->buf, dev->buf_len,  in at91_twi_write_data_dma()
300 		part1_len = dev->buf_len & ~0x3;  in at91_twi_write_data_dma()
307 		part2_len = dev->buf_len & 0x3;  in at91_twi_write_data_dma()
323 		sg_dma_len(&dma->sg[0]) = dev->buf_len;  in at91_twi_write_data_dma()
354 	if (!dev->buf_len) {  in at91_twi_read_next_byte()
361 	--dev->buf_len;  in at91_twi_read_next_byte()
372 			dev->buf_len += *dev->buf;  in at91_twi_read_next_byte()
373 			dev->msg->len = dev->buf_len + 1;  in at91_twi_read_next_byte()
375 					 dev->buf_len);  in at91_twi_read_next_byte()
379 			dev->buf_len = 1;  in at91_twi_read_next_byte()
384 	if (!dev->pdata->has_alt_cmd && dev->buf_len == 1)  in at91_twi_read_next_byte()
387 	dev_dbg(dev->dev, "read 0x%x, to go %d\n", *dev->buf, dev->buf_len);  in at91_twi_read_next_byte()
398 			 dev->buf_len, DMA_FROM_DEVICE);  in at91_twi_read_data_dma_callback()
402 		dev->buf += dev->buf_len - 2;  in at91_twi_read_data_dma_callback()
403 		dev->buf_len = 2;  in at91_twi_read_data_dma_callback()
415 	size_t buf_len;  in at91_twi_read_data_dma()  local
417 	buf_len = (dev->pdata->has_alt_cmd) ? dev->buf_len : dev->buf_len - 2;  in at91_twi_read_data_dma()
422 	dma_addr = dma_map_single(dev->dev, dev->buf, buf_len, DMA_FROM_DEVICE);  in at91_twi_read_data_dma()
430 	if (dev->fifo_size && IS_ALIGNED(buf_len, 4)) {  in at91_twi_read_data_dma()
443 	sg_dma_len(&dma->sg[0]) = buf_len;  in at91_twi_read_data_dma()
595 		(dev->msg->flags & I2C_M_RD) ? "read" : "write", dev->buf_len);  in at91_do_twi_transfer()
618 	if (!dev->buf_len) {  in at91_do_twi_transfer()
625 		if (!has_alt_cmd && dev->buf_len <= 1 &&  in at91_do_twi_transfer()
638 		if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {  in at91_do_twi_transfer()
648 		if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {  in at91_do_twi_transfer()
760 	dev->buf_len = m_start->len;  in at91_twi_xfer()