Lines Matching refs:dma_chan
124 struct dma_chan *rx_dma_chan;
125 struct dma_chan *tx_dma_chan;
941 struct dma_chan *dma_chan; in tegra_uart_dma_channel_allocate() local
947 dma_chan = dma_request_slave_channel_reason(tup->uport.dev, in tegra_uart_dma_channel_allocate()
949 if (IS_ERR(dma_chan)) { in tegra_uart_dma_channel_allocate()
950 ret = PTR_ERR(dma_chan); in tegra_uart_dma_channel_allocate()
963 dma_release_channel(dma_chan); in tegra_uart_dma_channel_allocate()
969 tup->rx_dma_chan = dma_chan; in tegra_uart_dma_channel_allocate()
978 dma_release_channel(dma_chan); in tegra_uart_dma_channel_allocate()
985 tup->tx_dma_chan = dma_chan; in tegra_uart_dma_channel_allocate()
990 ret = dmaengine_slave_config(dma_chan, &dma_sconfig); in tegra_uart_dma_channel_allocate()