Lines Matching refs:tx_dma
134 struct sprd_uart_dma tx_dma; member
234 dmaengine_pause(sp->tx_dma.chn); in sprd_stop_tx_dma()
236 dmaengine_tx_status(sp->tx_dma.chn, sp->tx_dma.cookie, &state); in sprd_stop_tx_dma()
238 trans_len = state.residue - sp->tx_dma.phys_addr; in sprd_stop_tx_dma()
240 dma_unmap_single(port->dev, sp->tx_dma.phys_addr, in sprd_stop_tx_dma()
241 sp->tx_dma.trans_len, DMA_TO_DEVICE); in sprd_stop_tx_dma()
244 dmaengine_terminate_all(sp->tx_dma.chn); in sprd_stop_tx_dma()
245 sp->tx_dma.trans_len = 0; in sprd_stop_tx_dma()
255 sp->tx_dma.trans_len = kfifo_out_linear_ptr(&tport->xmit_fifo, &tail, in sprd_tx_buf_remap()
258 sp->tx_dma.phys_addr = dma_map_single(port->dev, tail, in sprd_tx_buf_remap()
259 sp->tx_dma.trans_len, in sprd_tx_buf_remap()
261 return dma_mapping_error(port->dev, sp->tx_dma.phys_addr); in sprd_tx_buf_remap()
273 dma_unmap_single(port->dev, sp->tx_dma.phys_addr, in sprd_complete_tx_dma()
274 sp->tx_dma.trans_len, DMA_TO_DEVICE); in sprd_complete_tx_dma()
276 uart_xmit_advance(port, sp->tx_dma.trans_len); in sprd_complete_tx_dma()
283 sp->tx_dma.trans_len = 0; in sprd_complete_tx_dma()
322 u32 burst = sp->tx_dma.trans_len > SPRD_TX_FIFO_FULL ? in sprd_tx_dma_config()
323 SPRD_TX_FIFO_FULL : sp->tx_dma.trans_len; in sprd_tx_dma_config()
332 ret = dmaengine_slave_config(sp->tx_dma.chn, &cfg); in sprd_tx_dma_config()
336 return sprd_uart_dma_submit(port, &sp->tx_dma, sp->tx_dma.trans_len, in sprd_tx_dma_config()
358 if (sp->tx_dma.trans_len) in sprd_start_tx_dma()
362 sp->tx_dma.trans_len = 0; in sprd_start_tx_dma()
507 if (sp->tx_dma.enable) in sprd_release_dma()
508 dma_release_channel(sp->tx_dma.chn); in sprd_release_dma()
510 sp->tx_dma.enable = false; in sprd_release_dma()
519 sp->tx_dma.enable = true; in sprd_request_dma()
522 sp->tx_dma.chn = dma_request_chan(port->dev, "tx"); in sprd_request_dma()
523 if (IS_ERR(sp->tx_dma.chn)) { in sprd_request_dma()
525 PTR_ERR(sp->tx_dma.chn)); in sprd_request_dma()
526 sp->tx_dma.enable = false; in sprd_request_dma()
543 if (sp->tx_dma.enable) { in sprd_stop_tx()
564 if (sp->tx_dma.enable) { in sprd_start_tx()
698 if (!(sp->rx_dma.enable || sp->tx_dma.enable)) in sprd_uart_dma_startup()