tty: xuartps: Rebrand driver as Cadence UART

Zynq's UART is Cadence IP. Make this visible in the prompt in kconfig
and additional comments in the driver.
This also renames functions and symbols, as far as possible without
breaking user space API, to reflect the Cadence origin. This is achieved
through simple search and replace:
 - s/XUARTPS/CDNS_UART/g
 - s/xuartps/cdns_uart/g
The only exceptions are PORT_XUARTPS and the driver name, which stay as is,
due to their exposure to user space. As well as the - no legacy -
compatibility string 'xlnx,xuartps'

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 465 insertions, 443 deletions

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index f9a2c2fc03c4..8809775e2ba3 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1,5 +1,5 @@
 /*
- * Xilinx PS UART driver
+ * Cadence UART driver (found in Xilinx Zynq)
  *
  * 2011 - 2014 (C) Xilinx Inc.
  *
@@ -8,6 +8,10 @@
  * License as published by the Free Software Foundation;
  * either version 2 of the License, or (at your option) any
  * later version.
+ *
+ * This driver has originally been pushed by Xilinx using a Zynq-branding. This
+ * still shows in the naming of this file, the kconfig symbols and some symbols
+ * in the code.
  */
 
 #if defined(CONFIG_SERIAL_XILINX_PS_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
@@ -27,16 +31,16 @@
 #include <linux/of.h>
 #include <linux/module.h>
 
-#define XUARTPS_TTY_NAME	"ttyPS"
-#define XUARTPS_NAME		"xuartps"
-#define XUARTPS_MAJOR		0	/* use dynamic node allocation */
-#define XUARTPS_MINOR		0	/* works best with devtmpfs */
-#define XUARTPS_NR_PORTS	2
-#define XUARTPS_FIFO_SIZE	64	/* FIFO size */
-#define XUARTPS_REGISTER_SPACE	0xFFF
+#define CDNS_UART_TTY_NAME	"ttyPS"
+#define CDNS_UART_NAME		"xuartps"
+#define CDNS_UART_MAJOR		0	/* use dynamic node allocation */
+#define CDNS_UART_MINOR		0	/* works best with devtmpfs */
+#define CDNS_UART_NR_PORTS	2
+#define CDNS_UART_FIFO_SIZE	64	/* FIFO size */
+#define CDNS_UART_REGISTER_SPACE	0xFFF
 
-#define xuartps_readl(offset)		ioread32(port->membase + offset)
-#define xuartps_writel(val, offset)	iowrite32(val, port->membase + offset)
+#define cdns_uart_readl(offset)		ioread32(port->membase + offset)
+#define cdns_uart_writel(val, offset)	iowrite32(val, port->membase + offset)
 
 /* Rx Trigger level */
 static int rx_trigger_level = 56;
@@ -49,35 +53,35 @@ module_param(rx_timeout, uint, S_IRUGO);
 MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255");
 
 /* Register offsets for the UART. */
-#define XUARTPS_CR_OFFSET	0x00  /* Control Register */
-#define XUARTPS_MR_OFFSET	0x04  /* Mode Register */
-#define XUARTPS_IER_OFFSET	0x08  /* Interrupt Enable */
-#define XUARTPS_IDR_OFFSET	0x0C  /* Interrupt Disable */
-#define XUARTPS_IMR_OFFSET	0x10  /* Interrupt Mask */
-#define XUARTPS_ISR_OFFSET	0x14  /* Interrupt Status */
-#define XUARTPS_BAUDGEN_OFFSET	0x18  /* Baud Rate Generator */
-#define XUARTPS_RXTOUT_OFFSET	0x1C  /* RX Timeout */
-#define XUARTPS_RXWM_OFFSET	0x20  /* RX FIFO Trigger Level */
-#define XUARTPS_MODEMCR_OFFSET	0x24  /* Modem Control */
-#define XUARTPS_MODEMSR_OFFSET	0x28  /* Modem Status */
-#define XUARTPS_SR_OFFSET	0x2C  /* Channel Status */
-#define XUARTPS_FIFO_OFFSET	0x30  /* FIFO */
-#define XUARTPS_BAUDDIV_OFFSET	0x34  /* Baud Rate Divider */
-#define XUARTPS_FLOWDEL_OFFSET	0x38  /* Flow Delay */
-#define XUARTPS_IRRX_PWIDTH_OFFSET 0x3C /* IR Minimum Received Pulse Width */
-#define XUARTPS_IRTX_PWIDTH_OFFSET 0x40 /* IR Transmitted pulse Width */
-#define XUARTPS_TXWM_OFFSET	0x44  /* TX FIFO Trigger Level */
+#define CDNS_UART_CR_OFFSET		0x00  /* Control Register */
+#define CDNS_UART_MR_OFFSET		0x04  /* Mode Register */
+#define CDNS_UART_IER_OFFSET		0x08  /* Interrupt Enable */
+#define CDNS_UART_IDR_OFFSET		0x0C  /* Interrupt Disable */
+#define CDNS_UART_IMR_OFFSET		0x10  /* Interrupt Mask */
+#define CDNS_UART_ISR_OFFSET		0x14  /* Interrupt Status */
+#define CDNS_UART_BAUDGEN_OFFSET	0x18  /* Baud Rate Generator */
+#define CDNS_UART_RXTOUT_OFFSET		0x1C  /* RX Timeout */
+#define CDNS_UART_RXWM_OFFSET		0x20  /* RX FIFO Trigger Level */
+#define CDNS_UART_MODEMCR_OFFSET	0x24  /* Modem Control */
+#define CDNS_UART_MODEMSR_OFFSET	0x28  /* Modem Status */
+#define CDNS_UART_SR_OFFSET		0x2C  /* Channel Status */
+#define CDNS_UART_FIFO_OFFSET		0x30  /* FIFO */
+#define CDNS_UART_BAUDDIV_OFFSET	0x34  /* Baud Rate Divider */
+#define CDNS_UART_FLOWDEL_OFFSET	0x38  /* Flow Delay */
+#define CDNS_UART_IRRX_PWIDTH_OFFSET	0x3C  /* IR Min Received Pulse Width */
+#define CDNS_UART_IRTX_PWIDTH_OFFSET	0x40  /* IR Transmitted pulse Width */
+#define CDNS_UART_TXWM_OFFSET		0x44  /* TX FIFO Trigger Level */
 
 /* Control Register Bit Definitions */
-#define XUARTPS_CR_STOPBRK	0x00000100  /* Stop TX break */
-#define XUARTPS_CR_STARTBRK	0x00000080  /* Set TX break */
-#define XUARTPS_CR_TX_DIS	0x00000020  /* TX disabled. */
-#define XUARTPS_CR_TX_EN	0x00000010  /* TX enabled */
-#define XUARTPS_CR_RX_DIS	0x00000008  /* RX disabled. */
-#define XUARTPS_CR_RX_EN	0x00000004  /* RX enabled */
-#define XUARTPS_CR_TXRST	0x00000002  /* TX logic reset */
-#define XUARTPS_CR_RXRST	0x00000001  /* RX logic reset */
-#define XUARTPS_CR_RST_TO	0x00000040  /* Restart Timeout Counter */
+#define CDNS_UART_CR_STOPBRK	0x00000100  /* Stop TX break */
+#define CDNS_UART_CR_STARTBRK	0x00000080  /* Set TX break */
+#define CDNS_UART_CR_TX_DIS	0x00000020  /* TX disabled. */
+#define CDNS_UART_CR_TX_EN	0x00000010  /* TX enabled */
+#define CDNS_UART_CR_RX_DIS	0x00000008  /* RX disabled. */
+#define CDNS_UART_CR_RX_EN	0x00000004  /* RX enabled */
+#define CDNS_UART_CR_TXRST	0x00000002  /* TX logic reset */
+#define CDNS_UART_CR_RXRST	0x00000001  /* RX logic reset */
+#define CDNS_UART_CR_RST_TO	0x00000040  /* Restart Timeout Counter */
 
 /*
  * Mode Register:
@@ -85,22 +89,22 @@ MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255");
  * format. If this register is modified during transmission or reception,
  * data validity cannot be guaranteed.
  */
-#define XUARTPS_MR_CLKSEL		0x00000001  /* Pre-scalar selection */
-#define XUARTPS_MR_CHMODE_L_LOOP	0x00000200  /* Local loop back mode */
-#define XUARTPS_MR_CHMODE_NORM		0x00000000  /* Normal mode */
+#define CDNS_UART_MR_CLKSEL		0x00000001  /* Pre-scalar selection */
+#define CDNS_UART_MR_CHMODE_L_LOOP	0x00000200  /* Local loop back mode */
+#define CDNS_UART_MR_CHMODE_NORM	0x00000000  /* Normal mode */
 
-#define XUARTPS_MR_STOPMODE_2_BIT	0x00000080  /* 2 stop bits */
-#define XUARTPS_MR_STOPMODE_1_BIT	0x00000000  /* 1 stop bit */
+#define CDNS_UART_MR_STOPMODE_2_BIT	0x00000080  /* 2 stop bits */
+#define CDNS_UART_MR_STOPMODE_1_BIT	0x00000000  /* 1 stop bit */
 
-#define XUARTPS_MR_PARITY_NONE		0x00000020  /* No parity mode */
-#define XUARTPS_MR_PARITY_MARK		0x00000018  /* Mark parity mode */
-#define XUARTPS_MR_PARITY_SPACE		0x00000010  /* Space parity mode */
-#define XUARTPS_MR_PARITY_ODD		0x00000008  /* Odd parity mode */
-#define XUARTPS_MR_PARITY_EVEN		0x00000000  /* Even parity mode */
+#define CDNS_UART_MR_PARITY_NONE	0x00000020  /* No parity mode */
+#define CDNS_UART_MR_PARITY_MARK	0x00000018  /* Mark parity mode */
+#define CDNS_UART_MR_PARITY_SPACE	0x00000010  /* Space parity mode */
+#define CDNS_UART_MR_PARITY_ODD		0x00000008  /* Odd parity mode */
+#define CDNS_UART_MR_PARITY_EVEN	0x00000000  /* Even parity mode */
 
-#define XUARTPS_MR_CHARLEN_6_BIT	0x00000006  /* 6 bits data */
-#define XUARTPS_MR_CHARLEN_7_BIT	0x00000004  /* 7 bits data */
-#define XUARTPS_MR_CHARLEN_8_BIT	0x00000000  /* 8 bits data */
+#define CDNS_UART_MR_CHARLEN_6_BIT	0x00000006  /* 6 bits data */
+#define CDNS_UART_MR_CHARLEN_7_BIT	0x00000004  /* 7 bits data */
+#define CDNS_UART_MR_CHARLEN_8_BIT	0x00000000  /* 8 bits data */
 
 /*
  * Interrupt Registers:
@@ -113,20 +117,20 @@ MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255");
  * Reading either IER or IDR returns 0x00.
  * All four registers have the same bit definitions.
  */
-#define XUARTPS_IXR_TOUT	0x00000100 /* RX Timeout error interrupt */
-#define XUARTPS_IXR_PARITY	0x00000080 /* Parity error interrupt */
-#define XUARTPS_IXR_FRAMING	0x00000040 /* Framing error interrupt */
-#define XUARTPS_IXR_OVERRUN	0x00000020 /* Overrun error interrupt */
-#define XUARTPS_IXR_TXFULL	0x00000010 /* TX FIFO Full interrupt */
-#define XUARTPS_IXR_TXEMPTY	0x00000008 /* TX FIFO empty interrupt */
-#define XUARTPS_ISR_RXEMPTY	0x00000002 /* RX FIFO empty interrupt */
-#define XUARTPS_IXR_RXTRIG	0x00000001 /* RX FIFO trigger interrupt */
-#define XUARTPS_IXR_RXFULL	0x00000004 /* RX FIFO full interrupt. */
-#define XUARTPS_IXR_RXEMPTY	0x00000002 /* RX FIFO empty interrupt. */
-#define XUARTPS_IXR_MASK	0x00001FFF /* Valid bit mask */
+#define CDNS_UART_IXR_TOUT	0x00000100 /* RX Timeout error interrupt */
+#define CDNS_UART_IXR_PARITY	0x00000080 /* Parity error interrupt */
+#define CDNS_UART_IXR_FRAMING	0x00000040 /* Framing error interrupt */
+#define CDNS_UART_IXR_OVERRUN	0x00000020 /* Overrun error interrupt */
+#define CDNS_UART_IXR_TXFULL	0x00000010 /* TX FIFO Full interrupt */
+#define CDNS_UART_IXR_TXEMPTY	0x00000008 /* TX FIFO empty interrupt */
+#define CDNS_UART_ISR_RXEMPTY	0x00000002 /* RX FIFO empty interrupt */
+#define CDNS_UART_IXR_RXTRIG	0x00000001 /* RX FIFO trigger interrupt */
+#define CDNS_UART_IXR_RXFULL	0x00000004 /* RX FIFO full interrupt. */
+#define CDNS_UART_IXR_RXEMPTY	0x00000002 /* RX FIFO empty interrupt. */
+#define CDNS_UART_IXR_MASK	0x00001FFF /* Valid bit mask */
 
 /* Goes in read_status_mask for break detection as the HW doesn't do it*/
-#define XUARTPS_IXR_BRK		0x80000000
+#define CDNS_UART_IXR_BRK	0x80000000
 
 /*
  * Channel Status Register:
@@ -134,41 +138,42 @@ MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255");
  * to monitor the status of bits in the channel interrupt status register,
  * even if these are masked out by the interrupt mask register.
  */
-#define XUARTPS_SR_RXEMPTY	0x00000002 /* RX FIFO empty */
-#define XUARTPS_SR_TXEMPTY	0x00000008 /* TX FIFO empty */
-#define XUARTPS_SR_TXFULL	0x00000010 /* TX FIFO full */
-#define XUARTPS_SR_RXTRIG	0x00000001 /* Rx Trigger */
+#define CDNS_UART_SR_RXEMPTY	0x00000002 /* RX FIFO empty */
+#define CDNS_UART_SR_TXEMPTY	0x00000008 /* TX FIFO empty */
+#define CDNS_UART_SR_TXFULL	0x00000010 /* TX FIFO full */
+#define CDNS_UART_SR_RXTRIG	0x00000001 /* Rx Trigger */
 
 /* baud dividers min/max values */
-#define XUARTPS_BDIV_MIN	4
-#define XUARTPS_BDIV_MAX	255
-#define XUARTPS_CD_MAX		65535
+#define CDNS_UART_BDIV_MIN	4
+#define CDNS_UART_BDIV_MAX	255
+#define CDNS_UART_CD_MAX	65535
 
 /**
- * struct xuartps - device data
+ * struct cdns_uart - device data
  * @port:		Pointer to the UART port
- * @refclk:		Reference clock
- * @aperclk:		APB clock
+ * @uartclk:		Reference clock
+ * @pclk:		APB clock
  * @baud:		Current baud rate
  * @clk_rate_change_nb:	Notifier block for clock changes
  */
-struct xuartps {
+struct cdns_uart {
 	struct uart_port	*port;
-	struct clk		*refclk;
-	struct clk		*aperclk;
+	struct clk		*uartclk;
+	struct clk		*pclk;
 	unsigned int		baud;
 	struct notifier_block	clk_rate_change_nb;
 };
-#define to_xuartps(_nb) container_of(_nb, struct xuartps, clk_rate_change_nb);
+#define to_cdns_uart(_nb) container_of(_nb, struct cdns_uart, \
+		clk_rate_change_nb);
 
 /**
- * xuartps_isr - Interrupt handler
+ * cdns_uart_isr - Interrupt handler
  * @irq: Irq number
  * @dev_id: Id of the port
  *
  * Return: IRQHANDLED
  */
-static irqreturn_t xuartps_isr(int irq, void *dev_id)
+static irqreturn_t cdns_uart_isr(int irq, void *dev_id)
 {
 	struct uart_port *port = (struct uart_port *)dev_id;
 	unsigned long flags;
@@ -181,42 +186,42 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
 	/* Read the interrupt status register to determine which
 	 * interrupt(s) is/are active.
 	 */
-	isrstatus = xuartps_readl(XUARTPS_ISR_OFFSET);
+	isrstatus = cdns_uart_readl(CDNS_UART_ISR_OFFSET);
 
 	/*
 	 * There is no hardware break detection, so we interpret framing
 	 * error with all-zeros data as a break sequence. Most of the time,
 	 * there's another non-zero byte at the end of the sequence.
 	 */
-	if (isrstatus & XUARTPS_IXR_FRAMING) {
-		while (!(xuartps_readl(XUARTPS_SR_OFFSET) &
-					XUARTPS_SR_RXEMPTY)) {
-			if (!xuartps_readl(XUARTPS_FIFO_OFFSET)) {
-				port->read_status_mask |= XUARTPS_IXR_BRK;
-				isrstatus &= ~XUARTPS_IXR_FRAMING;
+	if (isrstatus & CDNS_UART_IXR_FRAMING) {
+		while (!(cdns_uart_readl(CDNS_UART_SR_OFFSET) &
+					CDNS_UART_SR_RXEMPTY)) {
+			if (!cdns_uart_readl(CDNS_UART_FIFO_OFFSET)) {
+				port->read_status_mask |= CDNS_UART_IXR_BRK;
+				isrstatus &= ~CDNS_UART_IXR_FRAMING;
 			}
 		}
-		xuartps_writel(XUARTPS_IXR_FRAMING, XUARTPS_ISR_OFFSET);
+		cdns_uart_writel(CDNS_UART_IXR_FRAMING, CDNS_UART_ISR_OFFSET);
 	}
 
 	/* drop byte with parity error if IGNPAR specified */
-	if (isrstatus & port->ignore_status_mask & XUARTPS_IXR_PARITY)
-		isrstatus &= ~(XUARTPS_IXR_RXTRIG | XUARTPS_IXR_TOUT);
+	if (isrstatus & port->ignore_status_mask & CDNS_UART_IXR_PARITY)
+		isrstatus &= ~(CDNS_UART_IXR_RXTRIG | CDNS_UART_IXR_TOUT);
 
 	isrstatus &= port->read_status_mask;
 	isrstatus &= ~port->ignore_status_mask;
 
-	if ((isrstatus & XUARTPS_IXR_TOUT) ||
-		(isrstatus & XUARTPS_IXR_RXTRIG)) {
+	if ((isrstatus & CDNS_UART_IXR_TOUT) ||
+		(isrstatus & CDNS_UART_IXR_RXTRIG)) {
 		/* Receive Timeout Interrupt */
-		while ((xuartps_readl(XUARTPS_SR_OFFSET) &
-			XUARTPS_SR_RXEMPTY) != XUARTPS_SR_RXEMPTY) {
-			data = xuartps_readl(XUARTPS_FIFO_OFFSET);
+		while ((cdns_uart_readl(CDNS_UART_SR_OFFSET) &
+			CDNS_UART_SR_RXEMPTY) != CDNS_UART_SR_RXEMPTY) {
+			data = cdns_uart_readl(CDNS_UART_FIFO_OFFSET);
 
 			/* Non-NULL byte after BREAK is garbage (99%) */
 			if (data && (port->read_status_mask &
-						XUARTPS_IXR_BRK)) {
-				port->read_status_mask &= ~XUARTPS_IXR_BRK;
+						CDNS_UART_IXR_BRK)) {
+				port->read_status_mask &= ~CDNS_UART_IXR_BRK;
 				port->icount.brk++;
 				if (uart_handle_break(port))
 					continue;
@@ -240,17 +245,17 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
 
 			port->icount.rx++;
 
-			if (isrstatus & XUARTPS_IXR_PARITY) {
+			if (isrstatus & CDNS_UART_IXR_PARITY) {
 				port->icount.parity++;
 				status = TTY_PARITY;
-			} else if (isrstatus & XUARTPS_IXR_FRAMING) {
+			} else if (isrstatus & CDNS_UART_IXR_FRAMING) {
 				port->icount.frame++;
 				status = TTY_FRAME;
-			} else if (isrstatus & XUARTPS_IXR_OVERRUN) {
+			} else if (isrstatus & CDNS_UART_IXR_OVERRUN) {
 				port->icount.overrun++;
 			}
 
-			uart_insert_char(port, isrstatus, XUARTPS_IXR_OVERRUN,
+			uart_insert_char(port, isrstatus, CDNS_UART_IXR_OVERRUN,
 					data, status);
 		}
 		spin_unlock(&port->lock);
@@ -259,10 +264,10 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
 	}
 
 	/* Dispatch an appropriate handler */
-	if ((isrstatus & XUARTPS_IXR_TXEMPTY) == XUARTPS_IXR_TXEMPTY) {
+	if ((isrstatus & CDNS_UART_IXR_TXEMPTY) == CDNS_UART_IXR_TXEMPTY) {
 		if (uart_circ_empty(&port->state->xmit)) {
-			xuartps_writel(XUARTPS_IXR_TXEMPTY,
-						XUARTPS_IDR_OFFSET);
+			cdns_uart_writel(CDNS_UART_IXR_TXEMPTY,
+						CDNS_UART_IDR_OFFSET);
 		} else {
 			numbytes = port->fifosize;
 			/* Break if no more data available in the UART buffer */
@@ -270,12 +275,12 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
 				if (uart_circ_empty(&port->state->xmit))
 					break;
 				/* Get the data from the UART circular buffer
-				 * and write it to the xuartps's TX_FIFO
+				 * and write it to the cdns_uart's TX_FIFO
 				 * register.
 				 */
-				xuartps_writel(
+				cdns_uart_writel(
 					port->state->xmit.buf[port->state->xmit.
-					tail], XUARTPS_FIFO_OFFSET);
+					tail], CDNS_UART_FIFO_OFFSET);
 
 				port->icount.tx++;
 
@@ -293,7 +298,7 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
 		}
 	}
 
-	xuartps_writel(isrstatus, XUARTPS_ISR_OFFSET);
+	cdns_uart_writel(isrstatus, CDNS_UART_ISR_OFFSET);
 
 	/* be sure to release the lock and tty before leaving */
 	spin_unlock_irqrestore(&port->lock, flags);
@@ -302,7 +307,7 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
 }
 
 /**
- * xuartps_calc_baud_divs - Calculate baud rate divisors
+ * cdns_uart_calc_baud_divs - Calculate baud rate divisors
  * @clk: UART module input clock
  * @baud: Desired baud rate
  * @rbdiv: BDIV value (return value)
@@ -321,8 +326,8 @@ static irqreturn_t xuartps_isr(int irq, void *dev_id)
  *			baud rate generate register
  *			baud rate clock divisor register
  */
-static unsigned int xuartps_calc_baud_divs(unsigned int clk, unsigned int baud,
-		u32 *rbdiv, u32 *rcd, int *div8)
+static unsigned int cdns_uart_calc_baud_divs(unsigned int clk,
+		unsigned int baud, u32 *rbdiv, u32 *rcd, int *div8)
 {
 	u32 cd, bdiv;
 	unsigned int calc_baud;
@@ -330,16 +335,16 @@ static unsigned int xuartps_calc_baud_divs(unsigned int clk, unsigned int baud,
 	unsigned int bauderror;
 	unsigned int besterror = ~0;
 
-	if (baud < clk / ((XUARTPS_BDIV_MAX + 1) * XUARTPS_CD_MAX)) {
+	if (baud < clk / ((CDNS_UART_BDIV_MAX + 1) * CDNS_UART_CD_MAX)) {
 		*div8 = 1;
 		clk /= 8;
 	} else {
 		*div8 = 0;
 	}
 
-	for (bdiv = XUARTPS_BDIV_MIN; bdiv <= XUARTPS_BDIV_MAX; bdiv++) {
+	for (bdiv = CDNS_UART_BDIV_MIN; bdiv <= CDNS_UART_BDIV_MAX; bdiv++) {
 		cd = DIV_ROUND_CLOSEST(clk, baud * (bdiv + 1));
-		if (cd < 1 || cd > XUARTPS_CD_MAX)
+		if (cd < 1 || cd > CDNS_UART_CD_MAX)
 			continue;
 
 		calc_baud = clk / (cd * (bdiv + 1));
@@ -364,47 +369,47 @@ static unsigned int xuartps_calc_baud_divs(unsigned int clk, unsigned int baud,
 }
 
 /**
- * xuartps_set_baud_rate - Calculate and set the baud rate
+ * cdns_uart_set_baud_rate - Calculate and set the baud rate
  * @port: Handle to the uart port structure
  * @baud: Baud rate to set
  * Return: baud rate, requested baud when possible, or actual baud when there
  *	   was too much error, zero if no valid divisors are found.
  */
-static unsigned int xuartps_set_baud_rate(struct uart_port *port,
+static unsigned int cdns_uart_set_baud_rate(struct uart_port *port,
 		unsigned int baud)
 {
 	unsigned int calc_baud;
 	u32 cd = 0, bdiv = 0;
 	u32 mreg;
 	int div8;
-	struct xuartps *xuartps = port->private_data;
+	struct cdns_uart *cdns_uart = port->private_data;
 
-	calc_baud = xuartps_calc_baud_divs(port->uartclk, baud, &bdiv, &cd,
+	calc_baud = cdns_uart_calc_baud_divs(port->uartclk, baud, &bdiv, &cd,
 			&div8);
 
 	/* Write new divisors to hardware */
-	mreg = xuartps_readl(XUARTPS_MR_OFFSET);
+	mreg = cdns_uart_readl(CDNS_UART_MR_OFFSET);
 	if (div8)
-		mreg |= XUARTPS_MR_CLKSEL;
+		mreg |= CDNS_UART_MR_CLKSEL;
 	else
-		mreg &= ~XUARTPS_MR_CLKSEL;
-	xuartps_writel(mreg, XUARTPS_MR_OFFSET);
-	xuartps_writel(cd, XUARTPS_BAUDGEN_OFFSET);
-	xuartps_writel(bdiv, XUARTPS_BAUDDIV_OFFSET);
-	xuartps->baud = baud;
+		mreg &= ~CDNS_UART_MR_CLKSEL;
+	cdns_uart_writel(mreg, CDNS_UART_MR_OFFSET);
+	cdns_uart_writel(cd, CDNS_UART_BAUDGEN_OFFSET);
+	cdns_uart_writel(bdiv, CDNS_UART_BAUDDIV_OFFSET);
+	cdns_uart->baud = baud;
 
 	return calc_baud;
 }
 
 #ifdef CONFIG_COMMON_CLK
 /**
- * xuartps_clk_notitifer_cb - Clock notifier callback
+ * cdns_uart_clk_notitifer_cb - Clock notifier callback
  * @nb:		Notifier block
  * @event:	Notify event
  * @data:	Notifier data
  * Return:	NOTIFY_OK or NOTIFY_DONE on success, NOTIFY_BAD on error.
  */
-static int xuartps_clk_notifier_cb(struct notifier_block *nb,
+static int cdns_uart_clk_notifier_cb(struct notifier_block *nb,
 		unsigned long event, void *data)
 {
 	u32 ctrl_reg;
@@ -412,9 +417,9 @@ static int xuartps_clk_notifier_cb(struct notifier_block *nb,
 	int locked = 0;
 	struct clk_notifier_data *ndata = data;
 	unsigned long flags = 0;
-	struct xuartps *xuartps = to_xuartps(nb);
+	struct cdns_uart *cdns_uart = to_cdns_uart(nb);
 
-	port = xuartps->port;
+	port = cdns_uart->port;
 	if (port->suspended)
 		return NOTIFY_OK;
 
@@ -428,20 +433,20 @@ static int xuartps_clk_notifier_cb(struct notifier_block *nb,
 		 * Find out if current baud-rate can be achieved with new clock
 		 * frequency.
 		 */
-		if (!xuartps_calc_baud_divs(ndata->new_rate, xuartps->baud,
+		if (!cdns_uart_calc_baud_divs(ndata->new_rate, cdns_uart->baud,
 					&bdiv, &cd, &div8)) {
 			dev_warn(port->dev, "clock rate change rejected\n");
 			return NOTIFY_BAD;
 		}
 
-		spin_lock_irqsave(&xuartps->port->lock, flags);
+		spin_lock_irqsave(&cdns_uart->port->lock, flags);
 
 		/* Disable the TX and RX to set baud rate */
-		ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
-		ctrl_reg |= XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS;
-		xuartps_writel(ctrl_reg, XUARTPS_CR_OFFSET);
+		ctrl_reg = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+		ctrl_reg |= CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS;
+		cdns_uart_writel(ctrl_reg, CDNS_UART_CR_OFFSET);
 
-		spin_unlock_irqrestore(&xuartps->port->lock, flags);
+		spin_unlock_irqrestore(&cdns_uart->port->lock, flags);
 
 		return NOTIFY_OK;
 	}
@@ -451,25 +456,25 @@ static int xuartps_clk_notifier_cb(struct notifier_block *nb,
 		 * frequency.
 		 */
 
-		spin_lock_irqsave(&xuartps->port->lock, flags);
+		spin_lock_irqsave(&cdns_uart->port->lock, flags);
 
 		locked = 1;
 		port->uartclk = ndata->new_rate;
 
-		xuartps->baud = xuartps_set_baud_rate(xuartps->port,
-				xuartps->baud);
+		cdns_uart->baud = cdns_uart_set_baud_rate(cdns_uart->port,
+				cdns_uart->baud);
 		/* fall through */
 	case ABORT_RATE_CHANGE:
 		if (!locked)
-			spin_lock_irqsave(&xuartps->port->lock, flags);
+			spin_lock_irqsave(&cdns_uart->port->lock, flags);
 
 		/* Set TX/RX Reset */
-		ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
-		ctrl_reg |= XUARTPS_CR_TXRST | XUARTPS_CR_RXRST;
-		xuartps_writel(ctrl_reg, XUARTPS_CR_OFFSET);
+		ctrl_reg = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+		ctrl_reg |= CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST;
+		cdns_uart_writel(ctrl_reg, CDNS_UART_CR_OFFSET);
 
-		while (xuartps_readl(XUARTPS_CR_OFFSET) &
-				(XUARTPS_CR_TXRST | XUARTPS_CR_RXRST))
+		while (cdns_uart_readl(CDNS_UART_CR_OFFSET) &
+				(CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST))
 			cpu_relax();
 
 		/*
@@ -477,13 +482,13 @@ static int xuartps_clk_notifier_cb(struct notifier_block *nb,
 		 * enable bit and RX enable bit to enable the transmitter and
 		 * receiver.
 		 */
-		xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
-		ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
-		ctrl_reg &= ~(XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS);
-		ctrl_reg |= XUARTPS_CR_TX_EN | XUARTPS_CR_RX_EN;
-		xuartps_writel(ctrl_reg, XUARTPS_CR_OFFSET);
+		cdns_uart_writel(rx_timeout, CDNS_UART_RXTOUT_OFFSET);
+		ctrl_reg = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+		ctrl_reg &= ~(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS);
+		ctrl_reg |= CDNS_UART_CR_TX_EN | CDNS_UART_CR_RX_EN;
+		cdns_uart_writel(ctrl_reg, CDNS_UART_CR_OFFSET);
 
-		spin_unlock_irqrestore(&xuartps->port->lock, flags);
+		spin_unlock_irqrestore(&cdns_uart->port->lock, flags);
 
 		return NOTIFY_OK;
 	default:
@@ -493,35 +498,35 @@ static int xuartps_clk_notifier_cb(struct notifier_block *nb,
 #endif
 
 /**
- * xuartps_start_tx -  Start transmitting bytes
+ * cdns_uart_start_tx -  Start transmitting bytes
  * @port: Handle to the uart port structure
  */
-static void xuartps_start_tx(struct uart_port *port)
+static void cdns_uart_start_tx(struct uart_port *port)
 {
 	unsigned int status, numbytes = port->fifosize;
 
 	if (uart_circ_empty(&port->state->xmit) || uart_tx_stopped(port))
 		return;
 
-	status = xuartps_readl(XUARTPS_CR_OFFSET);
+	status = cdns_uart_readl(CDNS_UART_CR_OFFSET);
 	/* Set the TX enable bit and clear the TX disable bit to enable the
 	 * transmitter.
 	 */
-	xuartps_writel((status & ~XUARTPS_CR_TX_DIS) | XUARTPS_CR_TX_EN,
-		XUARTPS_CR_OFFSET);
+	cdns_uart_writel((status & ~CDNS_UART_CR_TX_DIS) | CDNS_UART_CR_TX_EN,
+		CDNS_UART_CR_OFFSET);
 
-	while (numbytes-- && ((xuartps_readl(XUARTPS_SR_OFFSET) &
-				XUARTPS_SR_TXFULL)) != XUARTPS_SR_TXFULL) {
+	while (numbytes-- && ((cdns_uart_readl(CDNS_UART_SR_OFFSET) &
+				CDNS_UART_SR_TXFULL)) != CDNS_UART_SR_TXFULL) {
 		/* Break if no more data available in the UART buffer */
 		if (uart_circ_empty(&port->state->xmit))
 			break;
 
 		/* Get the data from the UART circular buffer and
-		 * write it to the xuartps's TX_FIFO register.
+		 * write it to the cdns_uart's TX_FIFO register.
 		 */
-		xuartps_writel(
+		cdns_uart_writel(
 			port->state->xmit.buf[port->state->xmit.tail],
-			XUARTPS_FIFO_OFFSET);
+			CDNS_UART_FIFO_OFFSET);
 		port->icount.tx++;
 
 		/* Adjust the tail of the UART buffer and wrap
@@ -530,90 +535,90 @@ static void xuartps_start_tx(struct uart_port *port)
 		port->state->xmit.tail = (port->state->xmit.tail + 1) &
 					(UART_XMIT_SIZE - 1);
 	}
-	xuartps_writel(XUARTPS_IXR_TXEMPTY, XUARTPS_ISR_OFFSET);
+	cdns_uart_writel(CDNS_UART_IXR_TXEMPTY, CDNS_UART_ISR_OFFSET);
 	/* Enable the TX Empty interrupt */
-	xuartps_writel(XUARTPS_IXR_TXEMPTY, XUARTPS_IER_OFFSET);
+	cdns_uart_writel(CDNS_UART_IXR_TXEMPTY, CDNS_UART_IER_OFFSET);
 
 	if (uart_circ_chars_pending(&port->state->xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(port);
 }
 
 /**
- * xuartps_stop_tx - Stop TX
+ * cdns_uart_stop_tx - Stop TX
  * @port: Handle to the uart port structure
  */
-static void xuartps_stop_tx(struct uart_port *port)
+static void cdns_uart_stop_tx(struct uart_port *port)
 {
 	unsigned int regval;
 
-	regval = xuartps_readl(XUARTPS_CR_OFFSET);
-	regval |= XUARTPS_CR_TX_DIS;
+	regval = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+	regval |= CDNS_UART_CR_TX_DIS;
 	/* Disable the transmitter */
-	xuartps_writel(regval, XUARTPS_CR_OFFSET);
+	cdns_uart_writel(regval, CDNS_UART_CR_OFFSET);
 }
 
 /**
- * xuartps_stop_rx - Stop RX
+ * cdns_uart_stop_rx - Stop RX
  * @port: Handle to the uart port structure
  */
-static void xuartps_stop_rx(struct uart_port *port)
+static void cdns_uart_stop_rx(struct uart_port *port)
 {
 	unsigned int regval;
 
-	regval = xuartps_readl(XUARTPS_CR_OFFSET);
-	regval |= XUARTPS_CR_RX_DIS;
+	regval = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+	regval |= CDNS_UART_CR_RX_DIS;
 	/* Disable the receiver */
-	xuartps_writel(regval, XUARTPS_CR_OFFSET);
+	cdns_uart_writel(regval, CDNS_UART_CR_OFFSET);
 }
 
 /**
- * xuartps_tx_empty -  Check whether TX is empty
+ * cdns_uart_tx_empty -  Check whether TX is empty
  * @port: Handle to the uart port structure
  *
  * Return: TIOCSER_TEMT on success, 0 otherwise
  */
-static unsigned int xuartps_tx_empty(struct uart_port *port)
+static unsigned int cdns_uart_tx_empty(struct uart_port *port)
 {
 	unsigned int status;
 
-	status = xuartps_readl(XUARTPS_ISR_OFFSET) & XUARTPS_IXR_TXEMPTY;
+	status = cdns_uart_readl(CDNS_UART_ISR_OFFSET) & CDNS_UART_IXR_TXEMPTY;
 	return status ? TIOCSER_TEMT : 0;
 }
 
 /**
- * xuartps_break_ctl - Based on the input ctl we have to start or stop
+ * cdns_uart_break_ctl - Based on the input ctl we have to start or stop
  *			transmitting char breaks
  * @port: Handle to the uart port structure
  * @ctl: Value based on which start or stop decision is taken
  */
-static void xuartps_break_ctl(struct uart_port *port, int ctl)
+static void cdns_uart_break_ctl(struct uart_port *port, int ctl)
 {
 	unsigned int status;
 	unsigned long flags;
 
 	spin_lock_irqsave(&port->lock, flags);
 
-	status = xuartps_readl(XUARTPS_CR_OFFSET);
+	status = cdns_uart_readl(CDNS_UART_CR_OFFSET);
 
 	if (ctl == -1)
-		xuartps_writel(XUARTPS_CR_STARTBRK | status,
-					XUARTPS_CR_OFFSET);
+		cdns_uart_writel(CDNS_UART_CR_STARTBRK | status,
+					CDNS_UART_CR_OFFSET);
 	else {
-		if ((status & XUARTPS_CR_STOPBRK) == 0)
-			xuartps_writel(XUARTPS_CR_STOPBRK | status,
-					 XUARTPS_CR_OFFSET);
+		if ((status & CDNS_UART_CR_STOPBRK) == 0)
+			cdns_uart_writel(CDNS_UART_CR_STOPBRK | status,
+					 CDNS_UART_CR_OFFSET);
 	}
 	spin_unlock_irqrestore(&port->lock, flags);
 }
 
 /**
- * xuartps_set_termios - termios operations, handling data length, parity,
+ * cdns_uart_set_termios - termios operations, handling data length, parity,
  *				stop bits, flow control, baud rate
  * @port: Handle to the uart port structure
  * @termios: Handle to the input termios structure
  * @old: Values of the previously saved termios structure
  */
-static void xuartps_set_termios(struct uart_port *port,
+static void cdns_uart_set_termios(struct uart_port *port,
 				struct ktermios *termios, struct ktermios *old)
 {
 	unsigned int cval = 0;
@@ -624,25 +629,26 @@ static void xuartps_set_termios(struct uart_port *port,
 	spin_lock_irqsave(&port->lock, flags);
 
 	/* Empty the receive FIFO 1st before making changes */
-	while ((xuartps_readl(XUARTPS_SR_OFFSET) &
-		 XUARTPS_SR_RXEMPTY) != XUARTPS_SR_RXEMPTY) {
-		xuartps_readl(XUARTPS_FIFO_OFFSET);
+	while ((cdns_uart_readl(CDNS_UART_SR_OFFSET) &
+		 CDNS_UART_SR_RXEMPTY) != CDNS_UART_SR_RXEMPTY) {
+		cdns_uart_readl(CDNS_UART_FIFO_OFFSET);
 	}
 
 	/* Disable the TX and RX to set baud rate */
-	ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
-	ctrl_reg |= XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS;
-	xuartps_writel(ctrl_reg, XUARTPS_CR_OFFSET);
+	ctrl_reg = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+	ctrl_reg |= CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS;
+	cdns_uart_writel(ctrl_reg, CDNS_UART_CR_OFFSET);
 
 	/*
 	 * Min baud rate = 6bps and Max Baud Rate is 10Mbps for 100Mhz clk
 	 * min and max baud should be calculated here based on port->uartclk.
 	 * this way we get a valid baud and can safely call set_baud()
 	 */
-	minbaud = port->uartclk / ((XUARTPS_BDIV_MAX + 1) * XUARTPS_CD_MAX * 8);
-	maxbaud = port->uartclk / (XUARTPS_BDIV_MIN + 1);
+	minbaud = port->uartclk /
+			((CDNS_UART_BDIV_MAX + 1) * CDNS_UART_CD_MAX * 8);
+	maxbaud = port->uartclk / (CDNS_UART_BDIV_MIN + 1);
 	baud = uart_get_baud_rate(port, termios, old, minbaud, maxbaud);
-	baud = xuartps_set_baud_rate(port, baud);
+	baud = cdns_uart_set_baud_rate(port, baud);
 	if (tty_termios_baud_rate(termios))
 		tty_termios_encode_baud_rate(termios, baud, baud);
 
@@ -650,52 +656,52 @@ static void xuartps_set_termios(struct uart_port *port,
 	uart_update_timeout(port, termios->c_cflag, baud);
 
 	/* Set TX/RX Reset */
-	ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
-	ctrl_reg |= XUARTPS_CR_TXRST | XUARTPS_CR_RXRST;
-	xuartps_writel(ctrl_reg, XUARTPS_CR_OFFSET);
+	ctrl_reg = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+	ctrl_reg |= CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST;
+	cdns_uart_writel(ctrl_reg, CDNS_UART_CR_OFFSET);
 
 	/*
 	 * Clear the RX disable and TX disable bits and then set the TX enable
 	 * bit and RX enable bit to enable the transmitter and receiver.
 	 */
-	ctrl_reg = xuartps_readl(XUARTPS_CR_OFFSET);
-	ctrl_reg &= ~(XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS);
-	ctrl_reg |= XUARTPS_CR_TX_EN | XUARTPS_CR_RX_EN;
-	xuartps_writel(ctrl_reg, XUARTPS_CR_OFFSET);
+	ctrl_reg = cdns_uart_readl(CDNS_UART_CR_OFFSET);
+	ctrl_reg &= ~(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS);
+	ctrl_reg |= CDNS_UART_CR_TX_EN | CDNS_UART_CR_RX_EN;
+	cdns_uart_writel(ctrl_reg, CDNS_UART_CR_OFFSET);
 
-	xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
+	cdns_uart_writel(rx_timeout, CDNS_UART_RXTOUT_OFFSET);
 
-	port->read_status_mask = XUARTPS_IXR_TXEMPTY | XUARTPS_IXR_RXTRIG |
-			XUARTPS_IXR_OVERRUN | XUARTPS_IXR_TOUT;
+	port->read_status_mask = CDNS_UART_IXR_TXEMPTY | CDNS_UART_IXR_RXTRIG |
+			CDNS_UART_IXR_OVERRUN | CDNS_UART_IXR_TOUT;
 	port->ignore_status_mask = 0;
 
 	if (termios->c_iflag & INPCK)
-		port->read_status_mask |= XUARTPS_IXR_PARITY |
-		XUARTPS_IXR_FRAMING;
+		port->read_status_mask |= CDNS_UART_IXR_PARITY |
+		CDNS_UART_IXR_FRAMING;
 
 	if (termios->c_iflag & IGNPAR)
-		port->ignore_status_mask |= XUARTPS_IXR_PARITY |
-			XUARTPS_IXR_FRAMING | XUARTPS_IXR_OVERRUN;
+		port->ignore_status_mask |= CDNS_UART_IXR_PARITY |
+			CDNS_UART_IXR_FRAMING | CDNS_UART_IXR_OVERRUN;
 
 	/* ignore all characters if CREAD is not set */
 	if ((termios->c_cflag & CREAD) == 0)
-		port->ignore_status_mask |= XUARTPS_IXR_RXTRIG |
-			XUARTPS_IXR_TOUT | XUARTPS_IXR_PARITY |
-			XUARTPS_IXR_FRAMING | XUARTPS_IXR_OVERRUN;
+		port->ignore_status_mask |= CDNS_UART_IXR_RXTRIG |
+			CDNS_UART_IXR_TOUT | CDNS_UART_IXR_PARITY |
+			CDNS_UART_IXR_FRAMING | CDNS_UART_IXR_OVERRUN;
 
-	mode_reg = xuartps_readl(XUARTPS_MR_OFFSET);
+	mode_reg = cdns_uart_readl(CDNS_UART_MR_OFFSET);
 
 	/* Handling Data Size */
 	switch (termios->c_cflag & CSIZE) {
 	case CS6:
-		cval |= XUARTPS_MR_CHARLEN_6_BIT;
+		cval |= CDNS_UART_MR_CHARLEN_6_BIT;
 		break;
 	case CS7:
-		cval |= XUARTPS_MR_CHARLEN_7_BIT;
+		cval |= CDNS_UART_MR_CHARLEN_7_BIT;
 		break;
 	default:
 	case CS8:
-		cval |= XUARTPS_MR_CHARLEN_8_BIT;
+		cval |= CDNS_UART_MR_CHARLEN_8_BIT;
 		termios->c_cflag &= ~CSIZE;
 		termios->c_cflag |= CS8;
 		break;
@@ -703,133 +709,135 @@ static void xuartps_set_termios(struct uart_port *port,
 
 	/* Handling Parity and Stop Bits length */
 	if (termios->c_cflag & CSTOPB)
-		cval |= XUARTPS_MR_STOPMODE_2_BIT; /* 2 STOP bits */
+		cval |= CDNS_UART_MR_STOPMODE_2_BIT; /* 2 STOP bits */
 	else
-		cval |= XUARTPS_MR_STOPMODE_1_BIT; /* 1 STOP bit */
+		cval |= CDNS_UART_MR_STOPMODE_1_BIT; /* 1 STOP bit */
 
 	if (termios->c_cflag & PARENB) {
 		/* Mark or Space parity */
 		if (termios->c_cflag & CMSPAR) {
 			if (termios->c_cflag & PARODD)
-				cval |= XUARTPS_MR_PARITY_MARK;
+				cval |= CDNS_UART_MR_PARITY_MARK;
 			else
-				cval |= XUARTPS_MR_PARITY_SPACE;
+				cval |= CDNS_UART_MR_PARITY_SPACE;
 		} else {
 			if (termios->c_cflag & PARODD)
-				cval |= XUARTPS_MR_PARITY_ODD;
+				cval |= CDNS_UART_MR_PARITY_ODD;
 			else
-				cval |= XUARTPS_MR_PARITY_EVEN;
+				cval |= CDNS_UART_MR_PARITY_EVEN;
 		}
 	} else {
-		cval |= XUARTPS_MR_PARITY_NONE;
+		cval |= CDNS_UART_MR_PARITY_NONE;
 	}
 	cval |= mode_reg & 1;
-	xuartps_writel(cval, XUARTPS_MR_OFFSET);
+	cdns_uart_writel(cval, CDNS_UART_MR_OFFSET);
 
 	spin_unlock_irqrestore(&port->lock, flags);
 }
 
 /**
- * xuartps_startup - Called when an application opens a xuartps port
+ * cdns_uart_startup - Called when an application opens a cdns_uart port
  * @port: Handle to the uart port structure
  *
  * Return: 0 on success, negative errno otherwise
  */
-static int xuartps_startup(struct uart_port *port)
+static int cdns_uart_startup(struct uart_port *port)
 {
 	unsigned int retval = 0, status = 0;
 
-	retval = request_irq(port->irq, xuartps_isr, 0, XUARTPS_NAME,
+	retval = request_irq(port->irq, cdns_uart_isr, 0, CDNS_UART_NAME,
 								(void *)port);
 	if (retval)
 		return retval;
 
 	/* Disable the TX and RX */
-	xuartps_writel(XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS,
-						XUARTPS_CR_OFFSET);
+	cdns_uart_writel(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS,
+						CDNS_UART_CR_OFFSET);
 
 	/* Set the Control Register with TX/RX Enable, TX/RX Reset,
 	 * no break chars.
 	 */
-	xuartps_writel(XUARTPS_CR_TXRST | XUARTPS_CR_RXRST,
-				XUARTPS_CR_OFFSET);
+	cdns_uart_writel(CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST,
+				CDNS_UART_CR_OFFSET);
 
-	status = xuartps_readl(XUARTPS_CR_OFFSET);
+	status = cdns_uart_readl(CDNS_UART_CR_OFFSET);
 
 	/* Clear the RX disable and TX disable bits and then set the TX enable
 	 * bit and RX enable bit to enable the transmitter and receiver.
 	 */
-	xuartps_writel((status & ~(XUARTPS_CR_TX_DIS | XUARTPS_CR_RX_DIS))
-			| (XUARTPS_CR_TX_EN | XUARTPS_CR_RX_EN |
-			XUARTPS_CR_STOPBRK), XUARTPS_CR_OFFSET);
+	cdns_uart_writel((status & ~(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS))
+			| (CDNS_UART_CR_TX_EN | CDNS_UART_CR_RX_EN |
+			CDNS_UART_CR_STOPBRK), CDNS_UART_CR_OFFSET);
 
 	/* Set the Mode Register with normal mode,8 data bits,1 stop bit,
 	 * no parity.
 	 */
-	xuartps_writel(XUARTPS_MR_CHMODE_NORM | XUARTPS_MR_STOPMODE_1_BIT
-		| XUARTPS_MR_PARITY_NONE | XUARTPS_MR_CHARLEN_8_BIT,
-		 XUARTPS_MR_OFFSET);
+	cdns_uart_writel(CDNS_UART_MR_CHMODE_NORM | CDNS_UART_MR_STOPMODE_1_BIT
+		| CDNS_UART_MR_PARITY_NONE | CDNS_UART_MR_CHARLEN_8_BIT,
+		 CDNS_UART_MR_OFFSET);
 
 	/*
 	 * Set the RX FIFO Trigger level to use most of the FIFO, but it
 	 * can be tuned with a module parameter
 	 */
-	xuartps_writel(rx_trigger_level, XUARTPS_RXWM_OFFSET);
+	cdns_uart_writel(rx_trigger_level, CDNS_UART_RXWM_OFFSET);
 
 	/*
 	 * Receive Timeout register is enabled but it
 	 * can be tuned with a module parameter
 	 */
-	xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
+	cdns_uart_writel(rx_timeout, CDNS_UART_RXTOUT_OFFSET);
 
 	/* Clear out any pending interrupts before enabling them */
-	xuartps_writel(xuartps_readl(XUARTPS_ISR_OFFSET), XUARTPS_ISR_OFFSET);
+	cdns_uart_writel(cdns_uart_readl(CDNS_UART_ISR_OFFSET),
+			CDNS_UART_ISR_OFFSET);
 
 	/* Set the Interrupt Registers with desired interrupts */
-	xuartps_writel(XUARTPS_IXR_TXEMPTY | XUARTPS_IXR_PARITY |
-		XUARTPS_IXR_FRAMING | XUARTPS_IXR_OVERRUN |
-		XUARTPS_IXR_RXTRIG | XUARTPS_IXR_TOUT, XUARTPS_IER_