tty: serial: fsl_lpuart: add LS1028A support (c2f448cf) · Commits · 戴 / test

drivers/tty/serial/fsl_lpuart.c

+25 −2

Original line number	Diff line number	Diff line
		@@ -234,6 +234,7 @@ static DEFINE_IDA(fsl_lpuart_ida);
		enum lpuart_type {
		VF610_LPUART,
		LS1021A_LPUART,
		LS1028A_LPUART,
		IMX7ULP_LPUART,
		IMX8QXP_LPUART,
		};
		@@ -278,11 +279,16 @@ static const struct lpuart_soc_data vf_data = {
		.iotype = UPIO_MEM,
		};

		static const struct lpuart_soc_data ls_data = {
		static const struct lpuart_soc_data ls1021a_data = {
		.devtype = LS1021A_LPUART,
		.iotype = UPIO_MEM32BE,
		};

		static const struct lpuart_soc_data ls1028a_data = {
		.devtype = LS1028A_LPUART,
		.iotype = UPIO_MEM32,
		};

		static struct lpuart_soc_data imx7ulp_data = {
		.devtype = IMX7ULP_LPUART,
		.iotype = UPIO_MEM32,
		@@ -297,7 +303,8 @@ static struct lpuart_soc_data imx8qxp_data = {

		static const struct of_device_id lpuart_dt_ids[] = {
		{ .compatible = "fsl,vf610-lpuart", .data = &vf_data, },
		{ .compatible = "fsl,ls1021a-lpuart", .data = &ls_data, },
		{ .compatible = "fsl,ls1021a-lpuart", .data = &ls1021a_data, },
		{ .compatible = "fsl,ls1028a-lpuart", .data = &ls1028a_data, },
		{ .compatible = "fsl,imx7ulp-lpuart", .data = &imx7ulp_data, },
		{ .compatible = "fsl,imx8qxp-lpuart", .data = &imx8qxp_data, },
		{ /* sentinel */ }
		@@ -307,6 +314,11 @@ MODULE_DEVICE_TABLE(of, lpuart_dt_ids);
		/* Forward declare this for the dma callbacks*/
		static void lpuart_dma_tx_complete(void *arg);

		static inline bool is_ls1028a_lpuart(struct lpuart_port *sport)
		{
		return sport->devtype == LS1028A_LPUART;
		}

		static inline bool is_imx8qxp_lpuart(struct lpuart_port *sport)
		{
		return sport->devtype == IMX8QXP_LPUART;
		@@ -1626,6 +1638,17 @@ static int lpuart32_startup(struct uart_port *port)
		sport->rxfifo_size = UARTFIFO_DEPTH((temp >> UARTFIFO_RXSIZE_OFF) &
		UARTFIFO_FIFOSIZE_MASK);

		/*
		* The LS1028A has a fixed length of 16 words. Although it supports the
		* RX/TXSIZE fields their encoding is different. Eg the reference manual
		* states 0b101 is 16 words.
		*/
		if (is_ls1028a_lpuart(sport)) {
		sport->rxfifo_size = 16;
		sport->txfifo_size = 16;
		sport->port.fifosize = sport->txfifo_size;
		}

		spin_lock_irqsave(&sport->port.lock, flags);

		lpuart32_setup_watermark_enable(sport);

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