diff options
Diffstat (limited to 'recipes-kernel/linux/files/uart-1.0.patch')
| -rw-r--r-- | recipes-kernel/linux/files/uart-1.0.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/recipes-kernel/linux/files/uart-1.0.patch b/recipes-kernel/linux/files/uart-1.0.patch new file mode 100644 index 0000000..06e8fdc --- /dev/null +++ b/recipes-kernel/linux/files/uart-1.0.patch @@ -0,0 +1,44 @@ +diff --git a/drivers/tty/serial/intel_quark_uart.c b/drivers/tty/serial/intel_quark_uart.c +index 5bb6a00..2297691 100755 +--- a/drivers/tty/serial/intel_quark_uart.c ++++ b/drivers/tty/serial/intel_quark_uart.c +@@ -769,6 +769,12 @@ static int handle_rx_to(struct x1000_port *priv) + return 0; + } while (rx_size == buf->size); + ++ if(!rx_size){ ++ quark_uart_hal_fifo_reset(priv, QUARK_UART_HAL_CLR_ALL_FIFO); ++ ret = quark_uart_hal_set_fifo(priv, QUARK_UART_HAL_DMA_MODE0, ++ QUARK_UART_HAL_FIFO_DIS, QUARK_UART_HAL_TRIGGER1); ++ return 0; ++ } + return QUARK_UART_HANDLED_RX_INT; + } + +@@ -1059,16 +1065,16 @@ static void quark_uart_work(struct work_struct *work) + return; + } + /* Configure TX */ +- priv->tx_conf.src_addr = sg_dma_address(priv->sg_tx_p); +- priv->tx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; +- priv->tx_conf.src_maxburst = LNW_DMA_MSIZE_1; +- priv->tx_conf.dst_addr = QUARK_UART_AHB_REG_BASE + QUARK_UART_THR; /* Wants an AHB address */ +- priv->tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; +- priv->tx_conf.dst_maxburst = LNW_DMA_MSIZE_4; +- priv->tx_conf.direction = DMA_MEM_TO_DEV; +- priv->tx_conf.device_fc = false; +- +- dmaengine_slave_config(priv->tx_chan, &priv->tx_conf); ++ priv->dmas_tx.dma_slave.src_addr = sg_dma_address(priv->sg_tx_p); ++ priv->dmas_tx.dma_slave.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; ++ priv->dmas_tx.dma_slave.src_maxburst = LNW_DMA_MSIZE_1; ++ priv->dmas_tx.dma_slave.dst_addr = QUARK_UART_AHB_REG_BASE + QUARK_UART_THR; /* Wants an AHB address */ ++ priv->dmas_tx.dma_slave.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; ++ priv->dmas_tx.dma_slave.dst_maxburst = LNW_DMA_MSIZE_4; ++ priv->dmas_tx.dma_slave.direction = DMA_MEM_TO_DEV; ++ priv->dmas_tx.dma_slave.device_fc = false; ++ ++ dmaengine_slave_config(priv->tx_chan, &priv->dmas_tx.dma_slave); + desc = dmaengine_prep_slave_sg(priv->tx_chan, + priv->sg_tx_p, priv->nent, DMA_MEM_TO_DEV, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); |