Skip to content

L
linux
Commit 1b0646a0 authored by Russell King's avatar Russell King Committed by Russell King
Browse files
Options

[ARM] Convert AMBA PL010 driver to use 'uart_amba_port' 

Use a pointer to struct uart_amba_port throughout the driver
rather than a mixture of that and struct uart_port.
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 7531a1c2
Hide whitespace changes
Inline Side-by-side
Showing with 134 additions and 124 deletions
drivers/serial/amba-pl010.c
View file @ 1b0646a0
...@@ -77,73 +77,77 @@ struct uart_amba_port { ...@@ -77,73 +77,77 @@ struct uart_amba_port {
static void pl010_stop_tx(struct uart_port *port) static void pl010_stop_tx(struct uart_port *port)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int cr; unsigned int cr;
cr = readb(port->membase + UART010_CR); cr = readb(uap->port.membase + UART010_CR);
cr &= ~UART010_CR_TIE; cr &= ~UART010_CR_TIE;
writel(cr, port->membase + UART010_CR); writel(cr, uap->port.membase + UART010_CR);
} }
static void pl010_start_tx(struct uart_port *port) static void pl010_start_tx(struct uart_port *port)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int cr; unsigned int cr;
cr = readb(port->membase + UART010_CR); cr = readb(uap->port.membase + UART010_CR);
cr |= UART010_CR_TIE; cr |= UART010_CR_TIE;
writel(cr, port->membase + UART010_CR); writel(cr, uap->port.membase + UART010_CR);
} }
static void pl010_stop_rx(struct uart_port *port) static void pl010_stop_rx(struct uart_port *port)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int cr; unsigned int cr;
cr = readb(port->membase + UART010_CR); cr = readb(uap->port.membase + UART010_CR);
cr &= ~(UART010_CR_RIE | UART010_CR_RTIE); cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
writel(cr, port->membase + UART010_CR); writel(cr, uap->port.membase + UART010_CR);
} }
static void pl010_enable_ms(struct uart_port *port) static void pl010_enable_ms(struct uart_port *port)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int cr; unsigned int cr;
cr = readb(port->membase + UART010_CR); cr = readb(uap->port.membase + UART010_CR);
cr |= UART010_CR_MSIE; cr |= UART010_CR_MSIE;
writel(cr, port->membase + UART010_CR); writel(cr, uap->port.membase + UART010_CR);
} }
static void pl010_rx_chars(struct uart_port *port) static void pl010_rx_chars(struct uart_amba_port *uap)
{ {
struct tty_struct *tty = port->info->tty; struct tty_struct *tty = uap->port.info->tty;
unsigned int status, ch, flag, rsr, max_count = 256; unsigned int status, ch, flag, rsr, max_count = 256;
status = readb(port->membase + UART01x_FR); status = readb(uap->port.membase + UART01x_FR);
while (UART_RX_DATA(status) && max_count--) { while (UART_RX_DATA(status) && max_count--) {
ch = readb(port->membase + UART01x_DR); ch = readb(uap->port.membase + UART01x_DR);
flag = TTY_NORMAL; flag = TTY_NORMAL;
port->icount.rx++; uap->port.icount.rx++;
/* /*
* Note that the error handling code is * Note that the error handling code is
* out of the main execution path * out of the main execution path
*/ */
rsr = readb(port->membase + UART01x_RSR) | UART_DUMMY_RSR_RX; rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
if (unlikely(rsr & UART01x_RSR_ANY)) { if (unlikely(rsr & UART01x_RSR_ANY)) {
writel(0, port->membase + UART01x_ECR); writel(0, uap->port.membase + UART01x_ECR);
if (rsr & UART01x_RSR_BE) { if (rsr & UART01x_RSR_BE) {
rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE); rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
port->icount.brk++; uap->port.icount.brk++;
if (uart_handle_break(port)) if (uart_handle_break(&uap->port))
goto ignore_char; goto ignore_char;
} else if (rsr & UART01x_RSR_PE) } else if (rsr & UART01x_RSR_PE)
port->icount.parity++; uap->port.icount.parity++;
else if (rsr & UART01x_RSR_FE) else if (rsr & UART01x_RSR_FE)
port->icount.frame++; uap->port.icount.frame++;
if (rsr & UART01x_RSR_OE) if (rsr & UART01x_RSR_OE)
port->icount.overrun++; uap->port.icount.overrun++;
rsr &= port->read_status_mask; rsr &= uap->port.read_status_mask;
if (rsr & UART01x_RSR_BE) if (rsr & UART01x_RSR_BE)
flag = TTY_BREAK; flag = TTY_BREAK;
...@@ -153,53 +157,52 @@ static void pl010_rx_chars(struct uart_port *port) ...@@ -153,53 +157,52 @@ static void pl010_rx_chars(struct uart_port *port)
flag = TTY_FRAME; flag = TTY_FRAME;
} }
if (uart_handle_sysrq_char(port, ch)) if (uart_handle_sysrq_char(&uap->port, ch))
goto ignore_char; goto ignore_char;
uart_insert_char(port, rsr, UART01x_RSR_OE, ch, flag); uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
ignore_char: ignore_char:
status = readb(port->membase + UART01x_FR); status = readb(uap->port.membase + UART01x_FR);
} }
tty_flip_buffer_push(tty); tty_flip_buffer_push(tty);
return; return;
} }
static void pl010_tx_chars(struct uart_port *port) static void pl010_tx_chars(struct uart_amba_port *uap)
{ {
struct circ_buf *xmit = &port->info->xmit; struct circ_buf *xmit = &uap->port.info->xmit;
int count; int count;
if (port->x_char) { if (uap->port.x_char) {
writel(port->x_char, port->membase + UART01x_DR); writel(uap->port.x_char, uap->port.membase + UART01x_DR);
port->icount.tx++; uap->port.icount.tx++;
port->x_char = 0; uap->port.x_char = 0;
return; return;
} }
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
pl010_stop_tx(port); pl010_stop_tx(&uap->port);
return; return;
} }
count = port->fifosize >> 1; count = uap->port.fifosize >> 1;
do { do {
writel(xmit->buf[xmit->tail], port->membase + UART01x_DR); writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++; uap->port.icount.tx++;
if (uart_circ_empty(xmit)) if (uart_circ_empty(xmit))
break; break;
} while (--count > 0); } while (--count > 0);
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(port); uart_write_wakeup(&uap->port);
if (uart_circ_empty(xmit)) if (uart_circ_empty(xmit))
pl010_stop_tx(port); pl010_stop_tx(&uap->port);
} }
static void pl010_modem_status(struct uart_port *port) static void pl010_modem_status(struct uart_amba_port *uap)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int status, delta; unsigned int status, delta;
writel(0, uap->port.membase + UART010_ICR); writel(0, uap->port.membase + UART010_ICR);
...@@ -226,47 +229,50 @@ static void pl010_modem_status(struct uart_port *port) ...@@ -226,47 +229,50 @@ static void pl010_modem_status(struct uart_port *port)
static irqreturn_t pl010_int(int irq, void *dev_id) static irqreturn_t pl010_int(int irq, void *dev_id)
{ {
struct uart_port *port = dev_id; struct uart_amba_port *uap = dev_id;
unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT; unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT;
int handled = 0; int handled = 0;
spin_lock(&port->lock); spin_lock(&uap->port.lock);
status = readb(port->membase + UART010_IIR); status = readb(uap->port.membase + UART010_IIR);
if (status) { if (status) {
do { do {
if (status & (UART010_IIR_RTIS | UART010_IIR_RIS)) if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
pl010_rx_chars(port); pl010_rx_chars(uap);
if (status & UART010_IIR_MIS) if (status & UART010_IIR_MIS)
pl010_modem_status(port); pl010_modem_status(uap);
if (status & UART010_IIR_TIS) if (status & UART010_IIR_TIS)
pl010_tx_chars(port); pl010_tx_chars(uap);
if (pass_counter-- == 0) if (pass_counter-- == 0)
break; break;
status = readb(port->membase + UART010_IIR); status = readb(uap->port.membase + UART010_IIR);
} while (status & (UART010_IIR_RTIS | UART010_IIR_RIS | } while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
UART010_IIR_TIS)); UART010_IIR_TIS));
handled = 1; handled = 1;
} }
spin_unlock(&port->lock); spin_unlock(&uap->port.lock);
return IRQ_RETVAL(handled); return IRQ_RETVAL(handled);
} }
static unsigned int pl010_tx_empty(struct uart_port *port) static unsigned int pl010_tx_empty(struct uart_port *port)
{ {
return readb(port->membase + UART01x_FR) & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT; struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int status = readb(uap->port.membase + UART01x_FR);
return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
} }
static unsigned int pl010_get_mctrl(struct uart_port *port) static unsigned int pl010_get_mctrl(struct uart_port *port)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int result = 0; unsigned int result = 0;
unsigned int status; unsigned int status;
status = readb(port->membase + UART01x_FR); status = readb(uap->port.membase + UART01x_FR);
if (status & UART01x_FR_DCD) if (status & UART01x_FR_DCD)
result |= TIOCM_CAR; result |= TIOCM_CAR;
if (status & UART01x_FR_DSR) if (status & UART01x_FR_DSR)
...@@ -287,17 +293,18 @@ static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl) ...@@ -287,17 +293,18 @@ static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
static void pl010_break_ctl(struct uart_port *port, int break_state) static void pl010_break_ctl(struct uart_port *port, int break_state)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned long flags; unsigned long flags;
unsigned int lcr_h; unsigned int lcr_h;
spin_lock_irqsave(&port->lock, flags); spin_lock_irqsave(&uap->port.lock, flags);
lcr_h = readb(port->membase + UART010_LCRH); lcr_h = readb(uap->port.membase + UART010_LCRH);
if (break_state == -1) if (break_state == -1)
lcr_h |= UART01x_LCRH_BRK; lcr_h |= UART01x_LCRH_BRK;
else else
lcr_h &= ~UART01x_LCRH_BRK; lcr_h &= ~UART01x_LCRH_BRK;
writel(lcr_h, port->membase + UART010_LCRH); writel(lcr_h, uap->port.membase + UART010_LCRH);
spin_unlock_irqrestore(&port->lock, flags); spin_unlock_irqrestore(&uap->port.lock, flags);
} }
static int pl010_startup(struct uart_port *port) static int pl010_startup(struct uart_port *port)
...@@ -308,46 +315,49 @@ static int pl010_startup(struct uart_port *port) ...@@ -308,46 +315,49 @@ static int pl010_startup(struct uart_port *port)
/* /*
* Allocate the IRQ * Allocate the IRQ
*/ */
retval = request_irq(port->irq, pl010_int, 0, "uart-pl010", port); retval = request_irq(uap->port.irq, pl010_int, 0, "uart-pl010", uap);
if (retval) if (retval)
return retval; return retval;
/* /*
* initialise the old status of the modem signals * initialise the old status of the modem signals
*/ */
uap->old_status = readb(port->membase + UART01x_FR) & UART01x_FR_MODEM_ANY; uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
/* /*
* Finally, enable interrupts * Finally, enable interrupts
*/ */
writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE, writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
port->membase + UART010_CR); uap->port.membase + UART010_CR);
return 0; return 0;
} }
static void pl010_shutdown(struct uart_port *port) static void pl010_shutdown(struct uart_port *port)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
/* /*
* Free the interrupt * Free the interrupt
*/ */
free_irq(port->irq, port); free_irq(uap->port.irq, uap);
/* /*
* disable all interrupts, disable the port * disable all interrupts, disable the port
*/ */
writel(0, port->membase + UART010_CR); writel(0, uap->port.membase + UART010_CR);
/* disable break condition and fifos */ /* disable break condition and fifos */
writel(readb(port->membase + UART010_LCRH) & writel(readb(uap->port.membase + UART010_LCRH) &
~(UART01x_LCRH_BRK | UART01x_LCRH_FEN), ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
port->membase + UART010_LCRH); uap->port.membase + UART010_LCRH);
} }
static void static void
pl010_set_termios(struct uart_port *port, struct ktermios *termios, pl010_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old) struct ktermios *old)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int lcr_h, old_cr; unsigned int lcr_h, old_cr;
unsigned long flags; unsigned long flags;
unsigned int baud, quot; unsigned int baud, quot;
...@@ -355,7 +365,7 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios, ...@@ -355,7 +365,7 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios,
/* /*
* Ask the core to calculate the divisor for us. * Ask the core to calculate the divisor for us.
*/ */
baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
quot = uart_get_divisor(port, baud); quot = uart_get_divisor(port, baud);
switch (termios->c_cflag & CSIZE) { switch (termios->c_cflag & CSIZE) {
...@@ -379,66 +389,66 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios, ...@@ -379,66 +389,66 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios,
if (!(termios->c_cflag & PARODD)) if (!(termios->c_cflag & PARODD))
lcr_h |= UART01x_LCRH_EPS; lcr_h |= UART01x_LCRH_EPS;
} }
if (port->fifosize > 1) if (uap->port.fifosize > 1)
lcr_h |= UART01x_LCRH_FEN; lcr_h |= UART01x_LCRH_FEN;
spin_lock_irqsave(&port->lock, flags); spin_lock_irqsave(&uap->port.lock, flags);
/* /*
* Update the per-port timeout. * Update the per-port timeout.
*/ */
uart_update_timeout(port, termios->c_cflag, baud); uart_update_timeout(port, termios->c_cflag, baud);
port->read_status_mask = UART01x_RSR_OE; uap->port.read_status_mask = UART01x_RSR_OE;
if (termios->c_iflag & INPCK) if (termios->c_iflag & INPCK)
port->read_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE; uap->port.read_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
if (termios->c_iflag & (BRKINT | PARMRK)) if (termios->c_iflag & (BRKINT | PARMRK))
port->read_status_mask |= UART01x_RSR_BE; uap->port.read_status_mask |= UART01x_RSR_BE;
/* /*
* Characters to ignore * Characters to ignore
*/ */
port->ignore_status_mask = 0; uap->port.ignore_status_mask = 0;
if (termios->c_iflag & IGNPAR) if (termios->c_iflag & IGNPAR)
port->ignore_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE; uap->port.ignore_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
if (termios->c_iflag & IGNBRK) { if (termios->c_iflag & IGNBRK) {
port->ignore_status_mask |= UART01x_RSR_BE; uap->port.ignore_status_mask |= UART01x_RSR_BE;
/* /*
* If we're ignoring parity and break indicators, * If we're ignoring parity and break indicators,
* ignore overruns too (for real raw support). * ignore overruns too (for real raw support).
*/ */
if (termios->c_iflag & IGNPAR) if (termios->c_iflag & IGNPAR)
port->ignore_status_mask |= UART01x_RSR_OE; uap->port.ignore_status_mask |= UART01x_RSR_OE;
} }
/* /*
* Ignore all characters if CREAD is not set. * Ignore all characters if CREAD is not set.
*/ */
if ((termios->c_cflag & CREAD) == 0) if ((termios->c_cflag & CREAD) == 0)
port->ignore_status_mask |= UART_DUMMY_RSR_RX; uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
/* first, disable everything */ /* first, disable everything */
old_cr = readb(port->membase + UART010_CR) & ~UART010_CR_MSIE; old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
if (UART_ENABLE_MS(port, termios->c_cflag)) if (UART_ENABLE_MS(port, termios->c_cflag))
old_cr |= UART010_CR_MSIE; old_cr |= UART010_CR_MSIE;
writel(0, port->membase + UART010_CR); writel(0, uap->port.membase + UART010_CR);
/* Set baud rate */ /* Set baud rate */
quot -= 1; quot -= 1;
writel((quot & 0xf00) >> 8, port->membase + UART010_LCRM); writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
writel(quot & 0xff, port->membase + UART010_LCRL); writel(quot & 0xff, uap->port.membase + UART010_LCRL);
/* /*
* ----------v----------v----------v----------v----- * ----------v----------v----------v----------v-----
* NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
* ----------^----------^----------^----------^----- * ----------^----------^----------^----------^-----
*/ */
writel(lcr_h, port->membase + UART010_LCRH); writel(lcr_h, uap->port.membase + UART010_LCRH);
writel(old_cr, port->membase + UART010_CR); writel(old_cr, uap->port.membase + UART010_CR);
spin_unlock_irqrestore(&port->lock, flags); spin_unlock_irqrestore(&uap->port.lock, flags);
} }
static const char *pl010_type(struct uart_port *port) static const char *pl010_type(struct uart_port *port)
...@@ -514,47 +524,48 @@ static struct uart_amba_port *amba_ports[UART_NR]; ...@@ -514,47 +524,48 @@ static struct uart_amba_port *amba_ports[UART_NR];
static void pl010_console_putchar(struct uart_port *port, int ch) static void pl010_console_putchar(struct uart_port *port, int ch)
{ {
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int status; unsigned int status;
do { do {
status = readb(port->membase + UART01x_FR); status = readb(uap->port.membase + UART01x_FR);
barrier(); barrier();
} while (!UART_TX_READY(status)); } while (!UART_TX_READY(status));
writel(ch, port->membase + UART01x_DR); writel(ch, uap->port.membase + UART01x_DR);
} }
static void static void
pl010_console_write(struct console *co, const char *s, unsigned int count) pl010_console_write(struct console *co, const char *s, unsigned int count)
{ {
struct uart_port *port = &amba_ports[co->index]->port; struct uart_amba_port *uap = amba_ports[co->index];
unsigned int status, old_cr; unsigned int status, old_cr;
/* /*
* First save the CR then disable the interrupts * First save the CR then disable the interrupts
*/ */
old_cr = readb(port->membase + UART010_CR); old_cr = readb(uap->port.membase + UART010_CR);
writel(UART01x_CR_UARTEN, port->membase + UART010_CR); writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
uart_console_write(port, s, count, pl010_console_putchar); uart_console_write(&uap->port, s, count, pl010_console_putchar);
/* /*
* Finally, wait for transmitter to become empty * Finally, wait for transmitter to become empty
* and restore the TCR * and restore the TCR
*/ */
do { do {
status = readb(port->membase + UART01x_FR); status = readb(uap->port.membase + UART01x_FR);
barrier(); barrier();
} while (status & UART01x_FR_BUSY); } while (status & UART01x_FR_BUSY);
writel(old_cr, port->membase + UART010_CR); writel(old_cr, uap->port.membase + UART010_CR);
} }
static void __init static void __init
pl010_console_get_options(struct uart_port *port, int *baud, pl010_console_get_options(struct uart_amba_port *uap, int *baud,
int *parity, int *bits) int *parity, int *bits)
{ {
if (readb(port->membase + UART010_CR) & UART01x_CR_UARTEN) { if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
unsigned int lcr_h, quot; unsigned int lcr_h, quot;
lcr_h = readb(port->membase + UART010_LCRH); lcr_h = readb(uap->port.membase + UART010_LCRH);
*parity = 'n'; *parity = 'n';
if (lcr_h & UART01x_LCRH_PEN) { if (lcr_h & UART01x_LCRH_PEN) {
...@@ -569,14 +580,15 @@ pl010_console_get_options(struct uart_port *port, int *baud, ...@@ -569,14 +580,15 @@ pl010_console_get_options(struct uart_port *port, int *baud,
else else
*bits = 8; *bits = 8;
quot = readb(port->membase + UART010_LCRL) | readb(port->membase + UART010_LCRM) << 8; quot = readb(uap->port.membase + UART010_LCRL) |
*baud = port->uartclk / (16 * (quot + 1)); readb(uap->port.membase + UART010_LCRM) << 8;
*baud = uap->port.uartclk / (16 * (quot + 1));
} }
} }
static int __init pl010_console_setup(struct console *co, char *options) static int __init pl010_console_setup(struct console *co, char *options)
{ {
struct uart_port *port; struct uart_amba_port *uap;
int baud = 38400; int baud = 38400;
int bits = 8; int bits = 8;
int parity = 'n'; int parity = 'n';
...@@ -589,16 +601,16 @@ static int __init pl010_console_setup(struct console *co, char *options) ...@@ -589,16 +601,16 @@ static int __init pl010_console_setup(struct console *co, char *options)
*/ */
if (co->index >= UART_NR) if (co->index >= UART_NR)
co->index = 0; co->index = 0;
if (!amba_ports[co->index]) uap = amba_ports[co->index];
if (!uap)
return -ENODEV; return -ENODEV;
port = &amba_ports[co->index]->port;
if (options) if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow); uart_parse_options(options, &baud, &parity, &bits, &flow);
else else
pl010_console_get_options(port, &baud, &parity, &bits); pl010_console_get_options(uap, &baud, &parity, &bits);
return uart_set_options(port, co, baud, parity, bits, flow); return uart_set_options(&uap->port, co, baud, parity, bits, flow);
} }
static struct uart_driver amba_reg; static struct uart_driver amba_reg;
...@@ -629,7 +641,7 @@ static struct uart_driver amba_reg = { ...@@ -629,7 +641,7 @@ static struct uart_driver amba_reg = {
static int pl010_probe(struct amba_device *dev, void *id) static int pl010_probe(struct amba_device *dev, void *id)
{ {
struct uart_amba_port *port; struct uart_amba_port *uap;
void __iomem *base; void __iomem *base;
int i, ret; int i, ret;
...@@ -642,8 +654,8 @@ static int pl010_probe(struct amba_device *dev, void *id) ...@@ -642,8 +654,8 @@ static int pl010_probe(struct amba_device *dev, void *id)
goto out; goto out;
} }
port = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL); uap = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
if (!port) { if (!uap) {
ret = -ENOMEM; ret = -ENOMEM;
goto out; goto out;
} }
...@@ -654,51 +666,49 @@ static int pl010_probe(struct amba_device *dev, void *id) ...@@ -654,51 +666,49 @@ static int pl010_probe(struct amba_device *dev, void *id)
goto free; goto free;
} }
port->port.dev = &dev->dev; uap->port.dev = &dev->dev;
port->port.mapbase = dev->res.start; uap->port.mapbase = dev->res.start;
port->port.membase = base; uap->port.membase = base;
port->port.iotype = UPIO_MEM; uap->port.iotype = UPIO_MEM;
port->port.irq = dev->irq[0]; uap->port.irq = dev->irq[0];
port->port.uartclk = 14745600; uap->port.uartclk = 14745600;
port->port.fifosize = 16; uap->port.fifosize = 16;
port->port.ops = &amba_pl010_pops; uap->port.ops = &amba_pl010_pops;
port->port.flags = UPF_BOOT_AUTOCONF; uap->port.flags = UPF_BOOT_AUTOCONF;
port->port.line = i; uap->port.line = i;
port->dev = dev; uap->dev = dev;
port->data = dev->dev.platform_data; uap->data = dev->dev.platform_data;
amba_ports[i] = port; amba_ports[i] = uap;
amba_set_drvdata(dev, port); amba_set_drvdata(dev, uap);
ret = uart_add_one_port(&amba_reg, &port->port); ret = uart_add_one_port(&amba_reg, &uap->port);
if (ret) { if (ret) {
amba_set_drvdata(dev, NULL); amba_set_drvdata(dev, NULL);
amba_ports[i] = NULL; amba_ports[i] = NULL;
iounmap(base); iounmap(base);
free: free:
kfree(port); kfree(uap);
} }
out: out:
return ret; return ret;
} }
static int pl010_remove(struct amba_device *dev) static int pl010_remove(struct amba_device *dev)
{ {
struct uart_amba_port *port = amba_get_drvdata(dev); struct uart_amba_port *uap = amba_get_drvdata(dev);
int i; int i;
amba_set_drvdata(dev, NULL); amba_set_drvdata(dev, NULL);
uart_remove_one_port(&amba_reg, &port->port); uart_remove_one_port(&amba_reg, &uap->port);
for (i = 0; i < ARRAY_SIZE(amba_ports); i++) for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
if (amba_ports[i] == port) if (amba_ports[i] == uap)
amba_ports[i] = NULL; amba_ports[i] = NULL;
iounmap(port->port.membase); iounmap(uap->port.membase);
kfree(port); kfree(uap);
return 0; return 0;
} }
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7