[PATCH v2 5/7] tty: xuartps: Rebrand driver as Cadence UART

Sören Brinkmann
2014-03-11T15:47:06Z

On Tue, 2014-03-11 at 09:50AM +0100, Michal Simek wrote:
> On 03/10/2014 10:40 PM, Soren Brinkmann wrote:
> > 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 exception is PORT_XUARTPS, which stays as is, due to its
> > exposure to user space.
> >
> > Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
> > ---
> > drivers/tty/serial/Kconfig | 9 +-
> > drivers/tty/serial/xilinx_uartps.c | 908 +++++++++++++++++++------------------
> > include/uapi/linux/serial_core.h | 2 +-
> > 3 files changed, 471 insertions(+), 448 deletions(-)
> >
> > diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
> > index a3815eaed421..1294284342bc 100644
> > --- a/drivers/tty/serial/Kconfig
> > +++ b/drivers/tty/serial/Kconfig
> > @@ -1368,18 +1368,19 @@ config SERIAL_MXS_AUART_CONSOLE
> > Enable a MXS AUART port to be the system console.
> >
> > config SERIAL_XILINX_PS_UART
> > - tristate "Xilinx PS UART support"
> > + tristate "Cadence (Xilinx Zynq) UART support"
> > depends on OF
> > select SERIAL_CORE
> > help
> > - This driver supports the Xilinx PS UART port.
> > + This driver supports the Cadence UART. It is found e.g. in Xilinx
> > + Zynq.
> >
> > config SERIAL_XILINX_PS_UART_CONSOLE
> > - bool "Xilinx PS UART console support"
> > + bool "Cadence UART console support"
> > depends on SERIAL_XILINX_PS_UART=y
> > select SERIAL_CORE_CONSOLE
> > help
> > - Enable a Xilinx PS UART port to be the system console.
> > + Enable a Cadence UART port to be the system console.
> >
> > config SERIAL_AR933X
> > tristate "AR933X serial port support"
> > diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
> > index a39c2d290902..f8729eabe302 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_OFFSET);
> > + cdns_uart_writel(CDNS_UART_IXR_TXEMPTY | CDNS_UART_IXR_PARITY |
> > + CDNS_UART_IXR_FRAMING | CDNS_UART_IXR_OVERRUN |
> > + CDNS_UART_IXR_RXTRIG | CDNS_UART_IXR_TOUT,
> > + CDNS_UART_IER_OFFSET);
> >
> > return retval;
> > }
> >
> > /**
> > - * xuartps_shutdown - Called when an application closes a xuartps port
> > + * cdns_uart_shutdown - Called when an application closes a cdns_uart port
> > * @port: Handle to the uart port structure
> > */
> > -static void xuartps_shutdown(struct uart_port *port)
> > +static void cdns_uart_shutdown(struct uart_port *port)
> > {
> > int status;
> >
> > /* Disable interrupts */
> > - status = xuartps_readl(XUARTPS_IMR_OFFSET);
> > - xuartps_writel(status, XUARTPS_IDR_OFFSET);
> > + status = cdns_uart_readl(CDNS_UART_IMR_OFFSET);
> > + cdns_uart_writel(status, CDNS_UART_IDR_OFFSET);
> >
> > /* 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);
> > free_irq(port->irq, port);
> > }
> >
> > /**
> > - * xuartps_type - Set UART type to xuartps port
> > + * cdns_uart_type - Set UART type to cdns_uart port
> > * @port: Handle to the uart port structure
> > *
> > * Return: string on success, NULL otherwise
> > */
> > -static const char *xuartps_type(struct uart_port *port)
> > +static const char *cdns_uart_type(struct uart_port *port)
> > {
> > - return port->type == PORT_XUARTPS ? XUARTPS_NAME : NULL;
> > + return port->type == PORT_XUARTPS ? CDNS_UART_NAME : NULL;
> > }
> >
> > /**
> > - * xuartps_verify_port - Verify the port params
> > + * cdns_uart_verify_port - Verify the port params
> > * @port: Handle to the uart port structure
> > * @ser: Handle to the structure whose members are compared
> > *
> > * Return: 0 on success, negative errno otherwise.
> > */
> > -static int xuartps_verify_port(struct uart_port *port,
> > +static int cdns_uart_verify_port(struct uart_port *port,
> > struct serial_struct *ser)
> > {
> > if (ser->type != PORT_UNKNOWN && ser->type != PORT_XUARTPS)
> > @@ -846,167 +854,167 @@ static int xuartps_verify_port(struct uart_port *port,
> > }
> >
> > /**
> > - * xuartps_request_port - Claim the memory region attached to xuartps port,
> > - * called when the driver adds a xuartps port via
> > + * cdns_uart_request_port - Claim the memory region attached to cdns_uart port,
> > + * called when the driver adds a cdns_uart port via
> > * uart_add_one_port()
> > * @port: Handle to the uart port structure
> > *
> > * Return: 0 on success, negative errno otherwise.
> > */
> > -static int xuartps_request_port(struct uart_port *port)
> > +static int cdns_uart_request_port(struct uart_port *port)
> > {
> > - if (!request_mem_region(port->mapbase, XUARTPS_REGISTER_SPACE,
> > - XUARTPS_NAME)) {
> > + if (!request_mem_region(port->mapbase, CDNS_UART_REGISTER_SPACE,
> > + CDNS_UART_NAME)) {
> > return -ENOMEM;
> > }
> >
> > - port->membase = ioremap(port->mapbase, XUARTPS_REGISTER_SPACE);
> > + port->membase = ioremap(port->mapbase, CDNS_UART_REGISTER_SPACE);
> > if (!port->membase) {
> > dev_err(port->dev, "Unable to map registers\n");
> > - release_mem_region(port->mapbase, XUARTPS_REGISTER_SPACE);
> > + release_mem_region(port->mapbase, CDNS_UART_REGISTER_SPACE);
> > return -ENOMEM;
> > }
> > return 0;
> > }
> >
> > /**
> > - * xuartps_release_port - Release UART port
> > + * cdns_uart_release_port - Release UART port
> > * @port: Handle to the uart port structure
> > *
> > - * Release the memory region attached to a xuartps port. Called when the
> > - * driver removes a xuartps port via uart_remove_one_port().
> > + * Release the memory region attached to a cdns_uart port. Called when the
> > + * driver removes a cdns_uart port via uart_remove_one_port().
> > */
> > -static void xuartps_release_port(struct uart_port *port)
> > +static void cdns_uart_release_port(struct uart_port *port)
> > {
> > - release_mem_region(port->mapbase, XUARTPS_REGISTER_SPACE);
> > + release_mem_region(port->mapbase, CDNS_UART_REGISTER_SPACE);
> > iounmap(port->membase);
> > port->membase = NULL;
> > }
> >
> > /**
> > - * xuartps_config_port - Configure UART port
> > + * cdns_uart_config_port - Configure UART port
> > * @port: Handle to the uart port structure
> > * @flags: If any
> > */
> > -static void xuartps_config_port(struct uart_port *port, int flags)
> > +static void cdns_uart_config_port(struct uart_port *port, int flags)
> > {
> > - if (flags & UART_CONFIG_TYPE && xuartps_request_port(port) == 0)
> > + if (flags & UART_CONFIG_TYPE && cdns_uart_request_port(port) == 0)
> > port->type = PORT_XUARTPS;
> > }
> >
> > /**
> > - * xuartps_get_mctrl - Get the modem control state
> > + * cdns_uart_get_mctrl - Get the modem control state
> > * @port: Handle to the uart port structure
> > *
> > * Return: The modem control state
> > */
> > -static unsigned int xuartps_get_mctrl(struct uart_port *port)
> > +static unsigned int cdns_uart_get_mctrl(struct uart_port *port)
> > {
> > return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
> > }
> >
> > -static void xuartps_set_mctrl(struct uart_port *port, unsigned int mctrl)
> > +static void cdns_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
> > {
> > /* N/A */
> > }
> >
> > -static void xuartps_enable_ms(struct uart_port *port)
> > +static void cdns_uart_enable_ms(struct uart_port *port)
> > {
> > /* N/A */
> > }
> >
> > #ifdef CONFIG_CONSOLE_POLL
> > -static int xuartps_poll_get_char(struct uart_port *port)
> > +static int cdns_uart_poll_get_char(struct uart_port *port)
> > {
> > u32 imr;
> > int c;
> >
> > /* Disable all interrupts */
> > - imr = xuartps_readl(XUARTPS_IMR_OFFSET);
> > - xuartps_writel(imr, XUARTPS_IDR_OFFSET);
> > + imr = cdns_uart_readl(CDNS_UART_IMR_OFFSET);
> > + cdns_uart_writel(imr, CDNS_UART_IDR_OFFSET);
> >
> > /* Check if FIFO is empty */
> > - if (xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_RXEMPTY)
> > + if (cdns_uart_readl(CDNS_UART_SR_OFFSET) & CDNS_UART_SR_RXEMPTY)
> > c = NO_POLL_CHAR;
> > else /* Read a character */
> > - c = (unsigned char) xuartps_readl(XUARTPS_FIFO_OFFSET);
> > + c = (unsigned char) cdns_uart_readl(CDNS_UART_FIFO_OFFSET);
> >
> > /* Enable interrupts */
> > - xuartps_writel(imr, XUARTPS_IER_OFFSET);
> > + cdns_uart_writel(imr, CDNS_UART_IER_OFFSET);
> >
> > return c;
> > }
> >
> > -static void xuartps_poll_put_char(struct uart_port *port, unsigned char c)
> > +static void cdns_uart_poll_put_char(struct uart_port *port, unsigned char c)
> > {
> > u32 imr;
> >
> > /* Disable all interrupts */
> > - imr = xuartps_readl(XUARTPS_IMR_OFFSET);
> > - xuartps_writel(imr, XUARTPS_IDR_OFFSET);
> > + imr = cdns_uart_readl(CDNS_UART_IMR_OFFSET);
> > + cdns_uart_writel(imr, CDNS_UART_IDR_OFFSET);
> >
> > /* Wait until FIFO is empty */
> > - while (!(xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_TXEMPTY))
> > + while (!(cdns_uart_readl(CDNS_UART_SR_OFFSET) & CDNS_UART_SR_TXEMPTY))
> > cpu_relax();
> >
> > /* Write a character */
> > - xuartps_writel(c, XUARTPS_FIFO_OFFSET);
> > + cdns_uart_writel(c, CDNS_UART_FIFO_OFFSET);
> >
> > /* Wait until FIFO is empty */
> > - while (!(xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_TXEMPTY))
> > + while (!(cdns_uart_readl(CDNS_UART_SR_OFFSET) & CDNS_UART_SR_TXEMPTY))
> > cpu_relax();
> >
> > /* Enable interrupts */
> > - xuartps_writel(imr, XUARTPS_IER_OFFSET);
> > + cdns_uart_writel(imr, CDNS_UART_IER_OFFSET);
> >
> > return;
> > }
> > #endif
> >
> > -static struct uart_ops xuartps_ops = {
> > - .set_mctrl = xuartps_set_mctrl,
> > - .get_mctrl = xuartps_get_mctrl,
> > - .enable_ms = xuartps_enable_ms,
> > - .start_tx = xuartps_start_tx,
> > - .stop_tx = xuartps_stop_tx,
> > - .stop_rx = xuartps_stop_rx,
> > - .tx_empty = xuartps_tx_empty,
> > - .break_ctl = xuartps_break_ctl,
> > - .set_termios = xuartps_set_termios,
> > - .startup = xuartps_startup,
> > - .shutdown = xuartps_shutdown,
> > - .type = xuartps_type,
> > - .verify_port = xuartps_verify_port,
> > - .request_port = xuartps_request_port,
> > - .release_port = xuartps_release_port,
> > - .config_port = xuartps_config_port,
> > +static struct uart_ops cdns_uart_ops = {
> > + .set_mctrl = cdns_uart_set_mctrl,
> > + .get_mctrl = cdns_uart_get_mctrl,
> > + .enable_ms = cdns_uart_enable_ms,
> > + .start_tx = cdns_uart_start_tx,
> > + .stop_tx = cdns_uart_stop_tx,
> > + .stop_rx = cdns_uart_stop_rx,
> > + .tx_empty = cdns_uart_tx_empty,
> > + .break_ctl = cdns_uart_break_ctl,
> > + .set_termios = cdns_uart_set_termios,
> > + .startup = cdns_uart_startup,
> > + .shutdown = cdns_uart_shutdown,
> > + .type = cdns_uart_type,
> > + .verify_port = cdns_uart_verify_port,
> > + .request_port = cdns_uart_request_port,
> > + .release_port = cdns_uart_release_port,
> > + .config_port = cdns_uart_config_port,
> > #ifdef CONFIG_CONSOLE_POLL
> > - .poll_get_char = xuartps_poll_get_char,
> > - .poll_put_char = xuartps_poll_put_char,
> > + .poll_get_char = cdns_uart_poll_get_char,
> > + .poll_put_char = cdns_uart_poll_put_char,
> > #endif
> > };
> >
> > -static struct uart_port xuartps_port[2];
> > +static struct uart_port cdns_uart_port[2];
> >
> > /**
> > - * xuartps_get_port - Configure the port from the platform device resource info
> > + * cdns_uart_get_port - Configure the port from platform device resource info
> > *
> > * Return: Pointer to a uart_port or NULL for failure
> > */
> > -static struct uart_port *xuartps_get_port(void)
> > +static struct uart_port *cdns_uart_get_port(void)
> > {
> > struct uart_port *port;
> > int id;
> >
> > /* Find the next unused port */
> > - for (id = 0; id < XUARTPS_NR_PORTS; id++)
> > - if (xuartps_port[id].mapbase == 0)
> > + for (id = 0; id < CDNS_UART_NR_PORTS; id++)
> > + if (cdns_uart_port[id].mapbase == 0)
> > break;
> >
> > - if (id >= XUARTPS_NR_PORTS)
> > + if (id >= CDNS_UART_NR_PORTS)
> > return NULL;
> >
> > - port = &xuartps_port[id];
> > + port = &cdns_uart_port[id];
> >
> > /* At this point, we've got an empty uart_port struct, initialize it */
> > spin_lock_init(&port->lock);
> > @@ -1016,8 +1024,8 @@ static struct uart_port *xuartps_get_port(void)
> > port->type = PORT_UNKNOWN;
> > port->iotype = UPIO_MEM32;
> > port->flags = UPF_BOOT_AUTOCONF;
> > - port->ops = &xuartps_ops;
> > - port->fifosize = XUARTPS_FIFO_SIZE;
> > + port->ops = &cdns_uart_ops;
> > + port->fifosize = CDNS_UART_FIFO_SIZE;
> > port->line = id;
> > port->dev = NULL;
> > return port;
> > @@ -1025,37 +1033,37 @@ static struct uart_port *xuartps_get_port(void)
> >
> > #ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
> > /**
> > - * xuartps_console_wait_tx - Wait for the TX to be full
> > + * cdns_uart_console_wait_tx - Wait for the TX to be full
> > * @port: Handle to the uart port structure
> > */
> > -static void xuartps_console_wait_tx(struct uart_port *port)
> > +static void cdns_uart_console_wait_tx(struct uart_port *port)
> > {
> > - while ((xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_TXEMPTY)
> > - != XUARTPS_SR_TXEMPTY)
> > + while ((cdns_uart_readl(CDNS_UART_SR_OFFSET) & CDNS_UART_SR_TXEMPTY)
> > + != CDNS_UART_SR_TXEMPTY)
> > barrier();
> > }
> >
> > /**
> > - * xuartps_console_putchar - write the character to the FIFO buffer
> > + * cdns_uart_console_putchar - write the character to the FIFO buffer
> > * @port: Handle to the uart port structure
> > * @ch: Character to be written
> > */
> > -static void xuartps_console_putchar(struct uart_port *port, int ch)
> > +static void cdns_uart_console_putchar(struct uart_port *port, int ch)
> > {
> > - xuartps_console_wait_tx(port);
> > - xuartps_writel(ch, XUARTPS_FIFO_OFFSET);
> > + cdns_uart_console_wait_tx(port);
> > + cdns_uart_writel(ch, CDNS_UART_FIFO_OFFSET);
> > }
> >
> > /**
> > - * xuartps_console_write - perform write operation
> > + * cdns_uart_console_write - perform write operation
> > * @co: Handle to the console
> > * @s: Pointer to character array
> > * @count: No of characters
> > */
> > -static void xuartps_console_write(struct console *co, const char *s,
> > +static void cdns_uart_console_write(struct console *co, const char *s,
> > unsigned int count)
> > {
> > - struct uart_port *port = &xuartps_port[co->index];
> > + struct uart_port *port = &cdns_uart_port[co->index];
> > unsigned long flags;
> > unsigned int imr, ctrl;
> > int locked = 1;
> > @@ -1066,45 +1074,45 @@ static void xuartps_console_write(struct console *co, const char *s,
> > spin_lock_irqsave(&port->lock, flags);
> >
> > /* save and disable interrupt */
> > - imr = xuartps_readl(XUARTPS_IMR_OFFSET);
> > - xuartps_writel(imr, XUARTPS_IDR_OFFSET);
> > + imr = cdns_uart_readl(CDNS_UART_IMR_OFFSET);
> > + cdns_uart_writel(imr, CDNS_UART_IDR_OFFSET);
> >
> > /*
> > * Make sure that the tx part is enabled. Set the TX enable bit and
> > * clear the TX disable bit to enable the transmitter.
> > */
> > - ctrl = xuartps_readl(XUARTPS_CR_OFFSET);
> > - xuartps_writel((ctrl & ~XUARTPS_CR_TX_DIS) | XUARTPS_CR_TX_EN,
> > - XUARTPS_CR_OFFSET);
> > + ctrl = cdns_uart_readl(CDNS_UART_CR_OFFSET);
> > + cdns_uart_writel((ctrl & ~CDNS_UART_CR_TX_DIS) | CDNS_UART_CR_TX_EN,
> > + CDNS_UART_CR_OFFSET);
> >
> > - uart_console_write(port, s, count, xuartps_console_putchar);
> > - xuartps_console_wait_tx(port);
> > + uart_console_write(port, s, count, cdns_uart_console_putchar);
> > + cdns_uart_console_wait_tx(port);
> >
> > - xuartps_writel(ctrl, XUARTPS_CR_OFFSET);
> > + cdns_uart_writel(ctrl, CDNS_UART_CR_OFFSET);
> >
> > /* restore interrupt state */
> > - xuartps_writel(imr, XUARTPS_IER_OFFSET);
> > + cdns_uart_writel(imr, CDNS_UART_IER_OFFSET);
> >
> > if (locked)
> > spin_unlock_irqrestore(&port->lock, flags);
> > }
> >
> > /**
> > - * xuartps_console_setup - Initialize the uart to default config
> > + * cdns_uart_console_setup - Initialize the uart to default config
> > * @co: Console handle
> > * @options: Initial settings of uart
> > *
> > * Return: 0 on success, negative errno otherwise.
> > */
> > -static int __init xuartps_console_setup(struct console *co, char *options)
> > +static int __init cdns_uart_console_setup(struct console *co, char *options)
> > {
> > - struct uart_port *port = &xuartps_port[co->index];
> > + struct uart_port *port = &cdns_uart_port[co->index];
> > int baud = 9600;
> > int bits = 8;
> > int parity = 'n';
> > int flow = 'n';
> >
> > - if (co->index < 0 || co->index >= XUARTPS_NR_PORTS)
> > + if (co->index < 0 || co->index >= CDNS_UART_NR_PORTS)
> > return -EINVAL;
> >
> > if (!port->mapbase) {
> > @@ -1118,53 +1126,53 @@ static int __init xuartps_console_setup(struct console *co, char *options)
> > return uart_set_options(port, co, baud, parity, bits, flow);
> > }
> >
> > -static struct uart_driver xuartps_uart_driver;
> > +static struct uart_driver cdns_uart_uart_driver;
> >
> > -static struct console xuartps_console = {
> > - .name = XUARTPS_TTY_NAME,
> > - .write = xuartps_console_write,
> > +static struct console cdns_uart_console = {
> > + .name = CDNS_UART_TTY_NAME,
> > + .write = cdns_uart_console_write,
> > .device = uart_console_device,
> > - .setup = xuartps_console_setup,
> > + .setup = cdns_uart_console_setup,
> > .flags = CON_PRINTBUFFER,
> > .index = -1, /* Specified on the cmdline (e.g. console=ttyPS ) */
> > - .data = &xuartps_uart_driver,
> > + .data = &cdns_uart_uart_driver,
> > };
> >
> > /**
> > - * xuartps_console_init - Initialization call
> > + * cdns_uart_console_init - Initialization call
> > *
> > * Return: 0 on success, negative error otherwise.
> > */
> > -static int __init xuartps_console_init(void)
> > +static int __init cdns_uart_console_init(void)
> > {
> > - register_console(&xuartps_console);
> > + register_console(&cdns_uart_console);
> > return 0;
> > }
> >
> > -console_initcall(xuartps_console_init);
> > +console_initcall(cdns_uart_console_init);
> >
> > #endif /* CONFIG_SERIAL_XILINX_PS_UART_CONSOLE */
> >
> > -static struct uart_driver xuartps_uart_driver = {
> > +static struct uart_driver cdns_uart_uart_driver = {
> > .owner = THIS_MODULE,
> > - .driver_name = XUARTPS_NAME,
> > - .dev_name = XUARTPS_TTY_NAME,
> > - .major = XUARTPS_MAJOR,
> > - .minor = XUARTPS_MINOR,
> > - .nr = XUARTPS_NR_PORTS,
> > + .driver_name = CDNS_UART_NAME,
> > + .dev_name = CDNS_UART_TTY_NAME,
> > + .major = CDNS_UART_MAJOR,
> > + .minor = CDNS_UART_MINOR,
> > + .nr = CDNS_UART_NR_PORTS,
> > #ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
> > - .cons = &xuartps_console,
> > + .cons = &cdns_uart_console,
> > #endif
> > };
> >
> > #ifdef CONFIG_PM_SLEEP
> > /**
> > - * xuartps_suspend - suspend event
> > + * cdns_uart_suspend - suspend event
> > * @device: Pointer to the device structure
> > *
> > * Return: 0
> > */
> > -static int xuartps_suspend(struct device *device)
> > +static int cdns_uart_suspend(struct device *device)
> > {
> > struct uart_port *port = dev_get_drvdata(device);
> > struct tty_struct *tty;
> > @@ -1183,23 +1191,24 @@ static int xuartps_suspend(struct device *device)
> > * Call the API provided in serial_core.c file which handles
> > * the suspend.
> > */
> > - uart_suspend_port(&xuartps_uart_driver, port);
> > + uart_suspend_port(&cdns_uart_uart_driver, port);
> > if (console_suspend_enabled && !may_wake) {
> > - struct xuartps *xuartps = port->private_data;
> > + struct cdns_uart *cdns_uart = port->private_data;
> >
> > - clk_disable(xuartps->refclk);
> > - clk_disable(xuartps->aperclk);
> > + clk_disable(cdns_uart->uartclk);
> > + clk_disable(cdns_uart->pclk);
> > } else {
> > unsigned long flags = 0;
> >
> > spin_lock_irqsave(&port->lock, flags);
> > /* Empty the receive FIFO 1st before making changes */
> > - while (!(xuartps_readl(XUARTPS_SR_OFFSET) & XUARTPS_SR_RXEMPTY))
> > - xuartps_readl(XUARTPS_FIFO_OFFSET);
> > + while (!(cdns_uart_readl(CDNS_UART_SR_OFFSET) &
> > + CDNS_UART_SR_RXEMPTY))
> > + cdns_uart_readl(CDNS_UART_FIFO_OFFSET);
> > /* set RX trigger level to 1 */
> > - xuartps_writel(1, XUARTPS_RXWM_OFFSET);
> > + cdns_uart_writel(1, CDNS_UART_RXWM_OFFSET);
> > /* disable RX timeout interrups */
> > - xuartps_writel(XUARTPS_IXR_TOUT, XUARTPS_IDR_OFFSET);
> > + cdns_uart_writel(CDNS_UART_IXR_TOUT, CDNS_UART_IDR_OFFSET);
> > spin_unlock_irqrestore(&port->lock, flags);
> > }
> >
> > @@ -1207,12 +1216,12 @@ static int xuartps_suspend(struct device *device)
> > }
> >
> > /**
> > - * xuartps_resume - Resume after a previous suspend
> > + * cdns_uart_resume - Resume after a previous suspend
> > * @device: Pointer to the device structure
> > *
> > * Return: 0
> > */
> > -static int xuartps_resume(struct device *device)
> > +static int cdns_uart_resume(struct device *device)
> > {
> > struct uart_port *port = dev_get_drvdata(device);
> > unsigned long flags = 0;
> > @@ -1230,83 +1239,95 @@ static int xuartps_resume(struct device *device)
> > }
> >
> > if (console_suspend_enabled && !may_wake) {
> > - struct xuartps *xuartps = port->private_data;
> > + struct cdns_uart *cdns_uart = port->private_data;
> >
> > - clk_enable(xuartps->aperclk);
> > - clk_enable(xuartps->refclk);
> > + clk_enable(cdns_uart->pclk);
> > + clk_enable(cdns_uart->uartclk);
> >
> > spin_lock_irqsave(&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);
> > - while (xuartps_readl(XUARTPS_CR_OFFSET) &
> > - (XUARTPS_CR_TXRST | XUARTPS_CR_RXRST))
> > + 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 (cdns_uart_readl(CDNS_UART_CR_OFFSET) &
> > + (CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST))
> > cpu_relax();
> >
> > /* restore rx timeout value */
> > - xuartps_writel(rx_timeout, XUARTPS_RXTOUT_OFFSET);
> > + cdns_uart_writel(rx_timeout, CDNS_UART_RXTOUT_OFFSET);
> > /* Enable Tx/Rx */
> > - 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);
> >
> > spin_unlock_irqrestore(&port->lock, flags);
> > } else {
> > spin_lock_irqsave(&port->lock, flags);
> > /* restore original rx trigger level */
> > - xuartps_writel(rx_trigger_level, XUARTPS_RXWM_OFFSET);
> > + cdns_uart_writel(rx_trigger_level, CDNS_UART_RXWM_OFFSET);
> > /* enable RX timeout interrupt */
> > - xuartps_writel(XUARTPS_IXR_TOUT, XUARTPS_IER_OFFSET);
> > + cdns_uart_writel(CDNS_UART_IXR_TOUT, CDNS_UART_IER_OFFSET);
> > spin_unlock_irqrestore(&port->lock, flags);
> > }
> >
> > - return uart_resume_port(&xuartps_uart_driver, port);
> > + return uart_resume_port(&cdns_uart_uart_driver, port);
> > }
> > #endif /* ! CONFIG_PM_SLEEP */
> >
> > -static SIMPLE_DEV_PM_OPS(xuartps_dev_pm_ops, xuartps_suspend, xuartps_resume);
> > +static SIMPLE_DEV_PM_OPS(cdns_uart_dev_pm_ops, cdns_uart_suspend,
> > + cdns_uart_resume);
> >
> > /**
> > - * xuartps_probe - Platform driver probe
> > + * cdns_uart_probe - Platform driver probe
> > * @pdev: Pointer to the platform device structure
> > *
> > * Return: 0 on success, negative error otherwise.
> > */
> > -static int xuartps_probe(struct platform_device *pdev)
> > +static int cdns_uart_probe(struct platform_device *pdev)
> > {
> > int rc;
> > struct uart_port *port;
> > struct resource *res, *res2;
> > - struct xuartps *xuartps_data;
> > + struct cdns_uart *cdns_uart_data;
> >
> > - xuartps_data = devm_kzalloc(&pdev->dev, sizeof(*xuartps_data),
> > + cdns_uart_data = devm_kzalloc(&pdev->dev, sizeof(*cdns_uart_data),
> > GFP_KERNEL);
> > - if (!xuartps_data)
> > + if (!cdns_uart_data)
> > return -ENOMEM;
> >
> > - xuartps_data->aperclk = devm_clk_get(&pdev->dev, "aper_clk");
> > - if (IS_ERR(xuartps_data->aperclk)) {
> > - dev_err(&pdev->dev, "aper_clk clock not found.\n");
> > - return PTR_ERR(xuartps_data->aperclk);
> > + cdns_uart_data->pclk = devm_clk_get(&pdev->dev, "pclk");
> > + if (IS_ERR(cdns_uart_data->pclk)) {
> > + cdns_uart_data->pclk = devm_clk_get(&pdev->dev, "aper_clk");
> > + if (!IS_ERR(cdns_uart_data->pclk))
> > + dev_err(&pdev->dev, "clock name 'aper_clk' is deprecated.\n");
> > + }
> > + if (IS_ERR(cdns_uart_data->pclk)) {
> > + dev_err(&pdev->dev, "pclk clock not found.\n");
> > + return PTR_ERR(cdns_uart_data->pclk);
> > + }
> > +
> > + cdns_uart_data->uartclk = devm_clk_get(&pdev->dev, "uart_clk");
> > + if (IS_ERR(cdns_uart_data->uartclk)) {
> > + cdns_uart_data->uartclk = devm_clk_get(&pdev->dev, "ref_clk");
> > + if (!IS_ERR(cdns_uart_data->uartclk))
> > + dev_err(&pdev->dev, "clock name 'ref_clk' is deprecated.\n");
> > }
> > - xuartps_data->refclk = devm_clk_get(&pdev->dev, "ref_clk");
> > - if (IS_ERR(xuartps_data->refclk)) {
> > - dev_err(&pdev->dev, "ref_clk clock not found.\n");
> > - return PTR_ERR(xuartps_data->refclk);
> > + if (IS_ERR(cdns_uart_data->uartclk)) {
> > + dev_err(&pdev->dev, "uart_clk clock not found.\n");
> > + return PTR_ERR(cdns_uart_data->uartclk);
> > }
> >
> > - rc = clk_prepare_enable(xuartps_data->aperclk);
> > + rc = clk_prepare_enable(cdns_uart_data->pclk);
> > if (rc) {
> > - dev_err(&pdev->dev, "Unable to enable APER clock.\n");
> > + dev_err(&pdev->dev, "Unable to enable pclk clock.\n");
> > return rc;
> > }
> > - rc = clk_prepare_enable(xuartps_data->refclk);
> > + rc = clk_prepare_enable(cdns_uart_data->uartclk);
> > if (rc) {
> > dev_err(&pdev->dev, "Unable to enable device clock.\n");
> > - goto err_out_clk_dis_aper;
> > + goto err_out_clk_dis_pclk;
> > }
> >
> > res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > @@ -1322,15 +1343,15 @@ static int xuartps_probe(struct platform_device *pdev)
> > }
> >
> > #ifdef CONFIG_COMMON_CLK
> > - xuartps_data->clk_rate_change_nb.notifier_call =
> > - xuartps_clk_notifier_cb;
> > - if (clk_notifier_register(xuartps_data->refclk,
> > - &xuartps_data->clk_rate_change_nb))
> > + cdns_uart_data->clk_rate_change_nb.notifier_call =
> > + cdns_uart_clk_notifier_cb;
> > + if (clk_notifier_register(cdns_uart_data->uartclk,
> > + &cdns_uart_data->clk_rate_change_nb))
> > dev_warn(&pdev->dev, "Unable to register clock notifier.\n");
> > #endif
> >
> > /* Initialize the port structure */
> > - port = xuartps_get_port();
> > + port = cdns_uart_get_port();
> >
> > if (!port) {
> > dev_err(&pdev->dev, "Cannot get uart_port structure\n");
> > @@ -1344,11 +1365,11 @@ static int xuartps_probe(struct platform_device *pdev)
> > port->mapbase = res->start;
> > port->irq = res2->start;
> > port->dev = &pdev->dev;
> > - port->uartclk = clk_get_rate(xuartps_data->refclk);
> > - port->private_data = xuartps_data;
> > - xuartps_data->port = port;
> > + port->uartclk = clk_get_rate(cdns_uart_data->uartclk);
> > + port->private_data = cdns_uart_data;
> > + cdns_uart_data->port = port;
> > platform_set_drvdata(pdev, port);
> > - rc = uart_add_one_port(&xuartps_uart_driver, port);
> > + rc = uart_add_one_port(&cdns_uart_uart_driver, port);
> > if (rc) {
> > dev_err(&pdev->dev,
> > "uart_add_one_port() failed; err=%i\n", rc);
> > @@ -1359,88 +1380,89 @@ static int xuartps_probe(struct platform_device *pdev)
> >
> > err_out_notif_unreg:
> > #ifdef CONFIG_COMMON_CLK
> > - clk_notifier_unregister(xuartps_data->refclk,
> > - &xuartps_data->clk_rate_change_nb);
> > + clk_notifier_unregister(cdns_uart_data->uartclk,
> > + &cdns_uart_data->clk_rate_change_nb);
> > #endif
> > err_out_clk_disable:
> > - clk_disable_unprepare(xuartps_data->refclk);
> > -err_out_clk_dis_aper:
> > - clk_disable_unprepare(xuartps_data->aperclk);
> > + clk_disable_unprepare(cdns_uart_data->uartclk);
> > +err_out_clk_dis_pclk:
> > + clk_disable_unprepare(cdns_uart_data->pclk);
> >
> > return rc;
> > }
> >
> > /**
> > - * xuartps_remove - called when the platform driver is unregistered
> > + * cdns_uart_remove - called when the platform driver is unregistered
> > * @pdev: Pointer to the platform device structure
> > *
> > * Return: 0 on success, negative error otherwise.
> > */
> > -static int xuartps_remove(struct platform_device *pdev)
> > +static int cdns_uart_remove(struct platform_device *pdev)
> > {
> > struct uart_port *port = platform_get_drvdata(pdev);
> > - struct xuartps *xuartps_data = port->private_data;
> > + struct cdns_uart *cdns_uart_data = port->private_data;
> > int rc;
> >
> > - /* Remove the xuartps port from the serial core */
> > + /* Remove the cdns_uart port from the serial core */
> > #ifdef CONFIG_COMMON_CLK
> > - clk_notifier_unregister(xuartps_data->refclk,
> > - &xuartps_data->clk_rate_change_nb);
> > + clk_notifier_unregister(cdns_uart_data->uartclk,
> > + &cdns_uart_data->clk_rate_change_nb);
> > #endif
> > - rc = uart_remove_one_port(&xuartps_uart_driver, port);
> > + rc = uart_remove_one_port(&cdns_uart_uart_driver, port);
> > port->mapbase = 0;
> > - clk_disable_unprepare(xuartps_data->refclk);
> > - clk_disable_unprepare(xuartps_data->aperclk);
> > + clk_disable_unprepare(cdns_uart_data->uartclk);
> > + clk_disable_unprepare(cdns_uart_data->pclk);
> > return rc;
> > }
> >
> > /* Match table for of_platform binding */
> > -static struct of_device_id xuartps_of_match[] = {
> > - { .compatible = "xlnx,xuartps", },
> > +static struct of_device_id cdns_uart_of_match[] = {
> > + { .compatible = "xlnx,cdns_uart", },
> > + { .compatible = "cdns,uart-r1p8", },
> > {}
>
> This doesn't fit with binding doc.
>
> +Required properties:
> +- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
>
> You have removed xlnx,xuartps from driver and introduce new one cdns_uart.
> I think it was done by sed.

Argh, a victim of the search and replace, right. Good catch. It should be
xlnx,xuartps, just as it has been before.

S?ren