Lines Matching refs:tx_ch
381 desc = dmaengine_prep_slave_single(stm32port->tx_ch, in stm32_transmit_chars_dma()
400 dma_async_issue_pending(stm32port->tx_ch); in stm32_transmit_chars_dma()
435 if (stm32_port->tx_ch) in stm32_transmit_chars()
469 if ((sr & USART_SR_TXE) && !(stm32_port->tx_ch)) in stm32_interrupt()
1166 stm32port->tx_ch = dma_request_slave_channel(dev, "tx"); in stm32_of_dma_tx_probe()
1167 if (!stm32port->tx_ch) { in stm32_of_dma_tx_probe()
1184 ret = dmaengine_slave_config(stm32port->tx_ch, &config); in stm32_of_dma_tx_probe()
1199 dma_release_channel(stm32port->tx_ch); in stm32_of_dma_tx_probe()
1200 stm32port->tx_ch = NULL; in stm32_of_dma_tx_probe()
1294 if (stm32_port->tx_ch) in stm32_serial_remove()
1295 dma_release_channel(stm32_port->tx_ch); in stm32_serial_remove()