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Suggested-by: Peter Hurley Signed-off-by: Soren Brinkmann --- v4: - added this patch --- drivers/tty/serial/xilinx_uartps.c | 221 ++++++++++++++++++------------------- 1 file changed, 106 insertions(+), 115 deletions(-) diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 0eecba88298f..3ff6e3c2347c 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -50,24 +50,24 @@ module_param(rx_timeout, uint, S_IRUGO); MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255"); /* Register offsets for the UART. */ -#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 */ +#define CDNS_UART_CR 0x00 /* Control Register */ +#define CDNS_UART_MR 0x04 /* Mode Register */ +#define CDNS_UART_IER 0x08 /* Interrupt Enable */ +#define CDNS_UART_IDR 0x0C /* Interrupt Disable */ +#define CDNS_UART_IMR 0x10 /* Interrupt Mask */ +#define CDNS_UART_ISR 0x14 /* Interrupt Status */ +#define CDNS_UART_BAUDGEN 0x18 /* Baud Rate Generator */ +#define CDNS_UART_RXTOUT 0x1C /* RX Timeout */ +#define CDNS_UART_RXWM 0x20 /* RX FIFO Trigger Level */ +#define CDNS_UART_MODEMCR 0x24 /* Modem Control */ +#define CDNS_UART_MODEMSR 0x28 /* Modem Status */ +#define CDNS_UART_SR 0x2C /* Channel Status */ +#define CDNS_UART_FIFO 0x30 /* FIFO */ +#define CDNS_UART_BAUDDIV 0x34 /* Baud Rate Divider */ +#define CDNS_UART_FLOWDEL 0x38 /* Flow Delay */ +#define CDNS_UART_IRRX_PWIDTH 0x3C /* IR Min Received Pulse Width */ +#define CDNS_UART_IRTX_PWIDTH 0x40 /* IR Transmitted pulse Width */ +#define CDNS_UART_TXWM 0x44 /* TX FIFO Trigger Level */ /* Control Register Bit Definitions */ #define CDNS_UART_CR_STOPBRK 0x00000100 /* Stop TX break */ @@ -184,15 +184,14 @@ static void cdns_uart_handle_rx(struct uart_port *port, unsigned int isrstatus) * there's another non-zero byte at the end of the sequence. */ if (isrstatus & CDNS_UART_IXR_FRAMING) { - while (!(readl(port->membase + CDNS_UART_SR_OFFSET) & + while (!(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_RXEMPTY)) { - if (!readl(port->membase + CDNS_UART_FIFO_OFFSET)) { + if (!readl(port->membase + CDNS_UART_FIFO)) { port->read_status_mask |= CDNS_UART_IXR_BRK; isrstatus &= ~CDNS_UART_IXR_FRAMING; } } - writel(CDNS_UART_IXR_FRAMING, - port->membase + CDNS_UART_ISR_OFFSET); + writel(CDNS_UART_IXR_FRAMING, port->membase + CDNS_UART_ISR); } /* drop byte with parity error if IGNPAR specified */ @@ -205,12 +204,11 @@ static void cdns_uart_handle_rx(struct uart_port *port, unsigned int isrstatus) if (!(isrstatus & (CDNS_UART_IXR_TOUT | CDNS_UART_IXR_RXTRIG))) return; - while (!(readl(port->membase + CDNS_UART_SR_OFFSET) & - CDNS_UART_SR_RXEMPTY)) { + while (!(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_RXEMPTY)) { u32 data; char status = TTY_NORMAL; - data = readl(port->membase + CDNS_UART_FIFO_OFFSET); + data = readl(port->membase + CDNS_UART_FIFO); /* Non-NULL byte after BREAK is garbage (99%) */ if (data && (port->read_status_mask & CDNS_UART_IXR_BRK)) { @@ -259,7 +257,7 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id) /* Read the interrupt status register to determine which * interrupt(s) is/are active. */ - isrstatus = readl(port->membase + CDNS_UART_ISR_OFFSET); + isrstatus = readl(port->membase + CDNS_UART_ISR); if (isrstatus & CDNS_UART_RX_IRQS) cdns_uart_handle_rx(port, isrstatus); @@ -268,7 +266,7 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id) if ((isrstatus & CDNS_UART_IXR_TXEMPTY) == CDNS_UART_IXR_TXEMPTY) { if (uart_circ_empty(&port->state->xmit)) { writel(CDNS_UART_IXR_TXEMPTY, - port->membase + CDNS_UART_IDR_OFFSET); + port->membase + CDNS_UART_IDR); } else { numbytes = port->fifosize; /* Break if no more data available in the UART buffer */ @@ -281,7 +279,7 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id) */ writel(port->state->xmit.buf[ port->state->xmit.tail], - port->membase + CDNS_UART_FIFO_OFFSET); + port->membase + CDNS_UART_FIFO); port->icount.tx++; @@ -299,7 +297,7 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id) } } - writel(isrstatus, port->membase + CDNS_UART_ISR_OFFSET); + writel(isrstatus, port->membase + CDNS_UART_ISR); /* be sure to release the lock and tty before leaving */ spin_unlock_irqrestore(&port->lock, flags); @@ -389,14 +387,14 @@ static unsigned int cdns_uart_set_baud_rate(struct uart_port *port, &div8); /* Write new divisors to hardware */ - mreg = readl(port->membase + CDNS_UART_MR_OFFSET); + mreg = readl(port->membase + CDNS_UART_MR); if (div8) mreg |= CDNS_UART_MR_CLKSEL; else mreg &= ~CDNS_UART_MR_CLKSEL; - writel(mreg, port->membase + CDNS_UART_MR_OFFSET); - writel(cd, port->membase + CDNS_UART_BAUDGEN_OFFSET); - writel(bdiv, port->membase + CDNS_UART_BAUDDIV_OFFSET); + writel(mreg, port->membase + CDNS_UART_MR); + writel(cd, port->membase + CDNS_UART_BAUDGEN); + writel(bdiv, port->membase + CDNS_UART_BAUDDIV); cdns_uart->baud = baud; return calc_baud; @@ -443,9 +441,9 @@ static int cdns_uart_clk_notifier_cb(struct notifier_block *nb, spin_lock_irqsave(&cdns_uart->port->lock, flags); /* Disable the TX and RX to set baud rate */ - ctrl_reg = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg |= CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl_reg, port->membase + CDNS_UART_CR); spin_unlock_irqrestore(&cdns_uart->port->lock, flags); @@ -470,11 +468,11 @@ static int cdns_uart_clk_notifier_cb(struct notifier_block *nb, spin_lock_irqsave(&cdns_uart->port->lock, flags); /* Set TX/RX Reset */ - ctrl_reg = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg |= CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl_reg, port->membase + CDNS_UART_CR); - while (readl(port->membase + CDNS_UART_CR_OFFSET) & + while (readl(port->membase + CDNS_UART_CR) & (CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST)) cpu_relax(); @@ -483,11 +481,11 @@ static int cdns_uart_clk_notifier_cb(struct notifier_block *nb, * enable bit and RX enable bit to enable the transmitter and * receiver. */ - writel(rx_timeout, port->membase + CDNS_UART_RXTOUT_OFFSET); - ctrl_reg = readl(port->membase + CDNS_UART_CR_OFFSET); + writel(rx_timeout, port->membase + CDNS_UART_RXTOUT); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg &= ~(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS); ctrl_reg |= CDNS_UART_CR_TX_EN | CDNS_UART_CR_RX_EN; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl_reg, port->membase + CDNS_UART_CR); spin_unlock_irqrestore(&cdns_uart->port->lock, flags); @@ -513,15 +511,15 @@ static void cdns_uart_start_tx(struct uart_port *port) * Set the TX enable bit and clear the TX disable bit to enable the * transmitter. */ - status = readl(port->membase + CDNS_UART_CR_OFFSET); + status = readl(port->membase + CDNS_UART_CR); status &= ~CDNS_UART_CR_TX_DIS; status |= CDNS_UART_CR_TX_EN; - writel(status, port->membase + CDNS_UART_CR_OFFSET); + writel(status, port->membase + CDNS_UART_CR); if (uart_circ_empty(&port->state->xmit)) return; - while (numbytes-- && ((readl(port->membase + CDNS_UART_SR_OFFSET) & + while (numbytes-- && ((readl(port->membase + CDNS_UART_SR) & 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)) @@ -531,7 +529,7 @@ static void cdns_uart_start_tx(struct uart_port *port) * write it to the cdns_uart's TX_FIFO register. */ writel(port->state->xmit.buf[port->state->xmit.tail], - port->membase + CDNS_UART_FIFO_OFFSET); + port->membase + CDNS_UART_FIFO); port->icount.tx++; /* Adjust the tail of the UART buffer and wrap @@ -540,9 +538,9 @@ static void cdns_uart_start_tx(struct uart_port *port) port->state->xmit.tail = (port->state->xmit.tail + 1) & (UART_XMIT_SIZE - 1); } - writel(CDNS_UART_IXR_TXEMPTY, port->membase + CDNS_UART_ISR_OFFSET); + writel(CDNS_UART_IXR_TXEMPTY, port->membase + CDNS_UART_ISR); /* Enable the TX Empty interrupt */ - writel(CDNS_UART_IXR_TXEMPTY, port->membase + CDNS_UART_IER_OFFSET); + writel(CDNS_UART_IXR_TXEMPTY, port->membase + CDNS_UART_IER); if (uart_circ_chars_pending(&port->state->xmit) < WAKEUP_CHARS) uart_write_wakeup(port); @@ -556,10 +554,10 @@ static void cdns_uart_stop_tx(struct uart_port *port) { unsigned int regval; - regval = readl(port->membase + CDNS_UART_CR_OFFSET); + regval = readl(port->membase + CDNS_UART_CR); regval |= CDNS_UART_CR_TX_DIS; /* Disable the transmitter */ - writel(regval, port->membase + CDNS_UART_CR_OFFSET); + writel(regval, port->membase + CDNS_UART_CR); } /** @@ -571,12 +569,12 @@ static void cdns_uart_stop_rx(struct uart_port *port) unsigned int regval; /* Disable RX IRQs */ - writel(CDNS_UART_RX_IRQS, port->membase + CDNS_UART_IDR_OFFSET); + writel(CDNS_UART_RX_IRQS, port->membase + CDNS_UART_IDR); /* Disable the receiver */ - regval = readl(port->membase + CDNS_UART_CR_OFFSET); + regval = readl(port->membase + CDNS_UART_CR); regval |= CDNS_UART_CR_RX_DIS; - writel(regval, port->membase + CDNS_UART_CR_OFFSET); + writel(regval, port->membase + CDNS_UART_CR); } /** @@ -589,7 +587,7 @@ static unsigned int cdns_uart_tx_empty(struct uart_port *port) { unsigned int status; - status = readl(port->membase + CDNS_UART_SR_OFFSET) & + status = readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_TXEMPTY; return status ? TIOCSER_TEMT : 0; } @@ -607,15 +605,15 @@ static void cdns_uart_break_ctl(struct uart_port *port, int ctl) spin_lock_irqsave(&port->lock, flags); - status = readl(port->membase + CDNS_UART_CR_OFFSET); + status = readl(port->membase + CDNS_UART_CR); if (ctl == -1) writel(CDNS_UART_CR_STARTBRK | status, - port->membase + CDNS_UART_CR_OFFSET); + port->membase + CDNS_UART_CR); else { if ((status & CDNS_UART_CR_STOPBRK) == 0) writel(CDNS_UART_CR_STOPBRK | status, - port->membase + CDNS_UART_CR_OFFSET); + port->membase + CDNS_UART_CR); } spin_unlock_irqrestore(&port->lock, flags); } @@ -638,18 +636,18 @@ static void cdns_uart_set_termios(struct uart_port *port, spin_lock_irqsave(&port->lock, flags); /* Wait for the transmit FIFO to empty before making changes */ - if (!(readl(port->membase + CDNS_UART_CR_OFFSET) & + if (!(readl(port->membase + CDNS_UART_CR) & CDNS_UART_CR_TX_DIS)) { - while (!(readl(port->membase + CDNS_UART_SR_OFFSET) & + while (!(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_TXEMPTY)) { cpu_relax(); } } /* Disable the TX and RX to set baud rate */ - ctrl_reg = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg |= CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl_reg, port->membase + CDNS_UART_CR); /* * Min baud rate = 6bps and Max Baud Rate is 10Mbps for 100Mhz clk @@ -668,20 +666,20 @@ static void cdns_uart_set_termios(struct uart_port *port, uart_update_timeout(port, termios->c_cflag, baud); /* Set TX/RX Reset */ - ctrl_reg = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg |= CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl_reg, port->membase + CDNS_UART_CR); /* * 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 = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg &= ~(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS); ctrl_reg |= CDNS_UART_CR_TX_EN | CDNS_UART_CR_RX_EN; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl_reg, port->membase + CDNS_UART_CR); - writel(rx_timeout, port->membase + CDNS_UART_RXTOUT_OFFSET); + writel(rx_timeout, port->membase + CDNS_UART_RXTOUT); port->read_status_mask = CDNS_UART_IXR_TXEMPTY | CDNS_UART_IXR_RXTRIG | CDNS_UART_IXR_OVERRUN | CDNS_UART_IXR_TOUT; @@ -701,7 +699,7 @@ static void cdns_uart_set_termios(struct uart_port *port, CDNS_UART_IXR_TOUT | CDNS_UART_IXR_PARITY | CDNS_UART_IXR_FRAMING | CDNS_UART_IXR_OVERRUN; - mode_reg = readl(port->membase + CDNS_UART_MR_OFFSET); + mode_reg = readl(port->membase + CDNS_UART_MR); /* Handling Data Size */ switch (termios->c_cflag & CSIZE) { @@ -742,7 +740,7 @@ static void cdns_uart_set_termios(struct uart_port *port, cval |= CDNS_UART_MR_PARITY_NONE; } cval |= mode_reg & 1; - writel(cval, port->membase + CDNS_UART_MR_OFFSET); + writel(cval, port->membase + CDNS_UART_MR); spin_unlock_irqrestore(&port->lock, flags); } @@ -763,45 +761,45 @@ static int cdns_uart_startup(struct uart_port *port) /* Disable the TX and RX */ writel(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS, - port->membase + CDNS_UART_CR_OFFSET); + port->membase + CDNS_UART_CR); /* Set the Control Register with TX/RX Enable, TX/RX Reset, * no break chars. */ writel(CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST, - port->membase + CDNS_UART_CR_OFFSET); + port->membase + CDNS_UART_CR); /* * Clear the RX disable bit and then set the RX enable bit to enable * the receiver. */ - status = readl(port->membase + CDNS_UART_CR_OFFSET); + status = readl(port->membase + CDNS_UART_CR); status &= CDNS_UART_CR_RX_DIS; status |= CDNS_UART_CR_RX_EN; - writel(status, port->membase + CDNS_UART_CR_OFFSET); + writel(status, port->membase + CDNS_UART_CR); /* Set the Mode Register with normal mode,8 data bits,1 stop bit, * no parity. */ writel(CDNS_UART_MR_CHMODE_NORM | CDNS_UART_MR_STOPMODE_1_BIT | CDNS_UART_MR_PARITY_NONE | CDNS_UART_MR_CHARLEN_8_BIT, - port->membase + CDNS_UART_MR_OFFSET); + port->membase + CDNS_UART_MR); /* * Set the RX FIFO Trigger level to use most of the FIFO, but it * can be tuned with a module parameter */ - writel(rx_trigger_level, port->membase + CDNS_UART_RXWM_OFFSET); + writel(rx_trigger_level, port->membase + CDNS_UART_RXWM); /* * Receive Timeout register is enabled but it * can be tuned with a module parameter */ - writel(rx_timeout, port->membase + CDNS_UART_RXTOUT_OFFSET); + writel(rx_timeout, port->membase + CDNS_UART_RXTOUT); /* Clear out any pending interrupts before enabling them */ - writel(readl(port->membase + CDNS_UART_ISR_OFFSET), - port->membase + CDNS_UART_ISR_OFFSET); + writel(readl(port->membase + CDNS_UART_ISR), + port->membase + CDNS_UART_ISR); spin_unlock_irqrestore(&port->lock, flags); @@ -813,7 +811,7 @@ static int cdns_uart_startup(struct uart_port *port) } /* Set the Interrupt Registers with desired interrupts */ - writel(CDNS_UART_RX_IRQS, port->membase + CDNS_UART_IER_OFFSET); + writel(CDNS_UART_RX_IRQS, port->membase + CDNS_UART_IER); return 0; } @@ -830,13 +828,13 @@ static void cdns_uart_shutdown(struct uart_port *port) spin_lock_irqsave(&port->lock, flags); /* Disable interrupts */ - status = readl(port->membase + CDNS_UART_IMR_OFFSET); - writel(status, port->membase + CDNS_UART_IDR_OFFSET); - writel(0xffffffff, port->membase + CDNS_UART_ISR_OFFSET); + status = readl(port->membase + CDNS_UART_IMR); + writel(status, port->membase + CDNS_UART_IDR); + writel(0xffffffff, port->membase + CDNS_UART_ISR); /* Disable the TX and RX */ writel(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS, - port->membase + CDNS_UART_CR_OFFSET); + port->membase + CDNS_UART_CR); spin_unlock_irqrestore(&port->lock, flags); @@ -941,7 +939,7 @@ static void cdns_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) { u32 val; - val = readl(port->membase + CDNS_UART_MODEMCR_OFFSET); + val = readl(port->membase + CDNS_UART_MODEMCR); val &= ~(CDNS_UART_MODEMCR_RTS | CDNS_UART_MODEMCR_DTR); @@ -950,7 +948,7 @@ static void cdns_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) if (mctrl & TIOCM_DTR) val |= CDNS_UART_MODEMCR_DTR; - writel(val, port->membase + CDNS_UART_MODEMCR_OFFSET); + writel(val, port->membase + CDNS_UART_MODEMCR); } #ifdef CONFIG_CONSOLE_POLL @@ -962,11 +960,10 @@ static int cdns_uart_poll_get_char(struct uart_port *port) spin_lock_irqsave(&port->lock, flags); /* Check if FIFO is empty */ - if (readl(port->membase + CDNS_UART_SR_OFFSET) & CDNS_UART_SR_RXEMPTY) + if (readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_RXEMPTY) c = NO_POLL_CHAR; else /* Read a character */ - c = (unsigned char) readl( - port->membase + CDNS_UART_FIFO_OFFSET); + c = (unsigned char) readl(port->membase + CDNS_UART_FIFO); spin_unlock_irqrestore(&port->lock, flags); @@ -980,16 +977,14 @@ static void cdns_uart_poll_put_char(struct uart_port *port, unsigned char c) spin_lock_irqsave(&port->lock, flags); /* Wait until FIFO is empty */ - while (!(readl(port->membase + CDNS_UART_SR_OFFSET) & - CDNS_UART_SR_TXEMPTY)) + while (!(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_TXEMPTY)) cpu_relax(); /* Write a character */ - writel(c, port->membase + CDNS_UART_FIFO_OFFSET); + writel(c, port->membase + CDNS_UART_FIFO); /* Wait until FIFO is empty */ - while (!(readl(port->membase + CDNS_UART_SR_OFFSET) & - CDNS_UART_SR_TXEMPTY)) + while (!(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_TXEMPTY)) cpu_relax(); spin_unlock_irqrestore(&port->lock, flags); @@ -1066,8 +1061,7 @@ static struct uart_port *cdns_uart_get_port(int id) */ static void cdns_uart_console_wait_tx(struct uart_port *port) { - while (!(readl(port->membase + CDNS_UART_SR_OFFSET) & - CDNS_UART_SR_TXEMPTY)) + while (!(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_TXEMPTY)) barrier(); } @@ -1079,7 +1073,7 @@ static void cdns_uart_console_wait_tx(struct uart_port *port) static void cdns_uart_console_putchar(struct uart_port *port, int ch) { cdns_uart_console_wait_tx(port); - writel(ch, port->membase + CDNS_UART_FIFO_OFFSET); + writel(ch, port->membase + CDNS_UART_FIFO); } static void __init cdns_early_write(struct console *con, const char *s, @@ -1124,25 +1118,25 @@ static void cdns_uart_console_write(struct console *co, const char *s, spin_lock_irqsave(&port->lock, flags); /* save and disable interrupt */ - imr = readl(port->membase + CDNS_UART_IMR_OFFSET); - writel(imr, port->membase + CDNS_UART_IDR_OFFSET); + imr = readl(port->membase + CDNS_UART_IMR); + writel(imr, port->membase + CDNS_UART_IDR); /* * Make sure that the tx part is enabled. Set the TX enable bit and * clear the TX disable bit to enable the transmitter. */ - ctrl = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl = readl(port->membase + CDNS_UART_CR); ctrl &= ~CDNS_UART_CR_TX_DIS; ctrl |= CDNS_UART_CR_TX_EN; - writel(ctrl, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl, port->membase + CDNS_UART_CR); uart_console_write(port, s, count, cdns_uart_console_putchar); cdns_uart_console_wait_tx(port); - writel(ctrl, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl, port->membase + CDNS_UART_CR); /* restore interrupt state */ - writel(imr, port->membase + CDNS_UART_IER_OFFSET); + writel(imr, port->membase + CDNS_UART_IER); if (locked) spin_unlock_irqrestore(&port->lock, flags); @@ -1254,14 +1248,13 @@ static int cdns_uart_suspend(struct device *device) spin_lock_irqsave(&port->lock, flags); /* Empty the receive FIFO 1st before making changes */ - while (!(readl(port->membase + CDNS_UART_SR_OFFSET) & + while (!(readl(port->membase + CDNS_UART_SR) & CDNS_UART_SR_RXEMPTY)) - readl(port->membase + CDNS_UART_FIFO_OFFSET); + readl(port->membase + CDNS_UART_FIFO); /* set RX trigger level to 1 */ - writel(1, port->membase + CDNS_UART_RXWM_OFFSET); + writel(1, port->membase + CDNS_UART_RXWM); /* disable RX timeout interrups */ - writel(CDNS_UART_IXR_TOUT, - port->membase + CDNS_UART_IDR_OFFSET); + writel(CDNS_UART_IXR_TOUT, port->membase + CDNS_UART_IDR); spin_unlock_irqrestore(&port->lock, flags); } @@ -1300,30 +1293,28 @@ static int cdns_uart_resume(struct device *device) spin_lock_irqsave(&port->lock, flags); /* Set TX/RX Reset */ - ctrl_reg = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg |= CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); - while (readl(port->membase + CDNS_UART_CR_OFFSET) & + writel(ctrl_reg, port->membase + CDNS_UART_CR); + while (readl(port->membase + CDNS_UART_CR) & (CDNS_UART_CR_TXRST | CDNS_UART_CR_RXRST)) cpu_relax(); /* restore rx timeout value */ - writel(rx_timeout, port->membase + CDNS_UART_RXTOUT_OFFSET); + writel(rx_timeout, port->membase + CDNS_UART_RXTOUT); /* Enable Tx/Rx */ - ctrl_reg = readl(port->membase + CDNS_UART_CR_OFFSET); + ctrl_reg = readl(port->membase + CDNS_UART_CR); ctrl_reg &= ~(CDNS_UART_CR_TX_DIS | CDNS_UART_CR_RX_DIS); ctrl_reg |= CDNS_UART_CR_TX_EN | CDNS_UART_CR_RX_EN; - writel(ctrl_reg, port->membase + CDNS_UART_CR_OFFSET); + writel(ctrl_reg, port->membase + CDNS_UART_CR); spin_unlock_irqrestore(&port->lock, flags); } else { spin_lock_irqsave(&port->lock, flags); /* restore original rx trigger level */ - writel(rx_trigger_level, - port->membase + CDNS_UART_RXWM_OFFSET); + writel(rx_trigger_level, port->membase + CDNS_UART_RXWM); /* enable RX timeout interrupt */ - writel(CDNS_UART_IXR_TOUT, - port->membase + CDNS_UART_IER_OFFSET); + writel(CDNS_UART_IXR_TOUT, port->membase + CDNS_UART_IER); spin_unlock_irqrestore(&port->lock, flags); }