#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/tty.h>
+#include <linux/ratelimit.h>
#include <linux/tty_flip.h>
#include <linux/serial_reg.h>
#include <linux/serial_core.h>
unsigned char lsr_saved_flags;
#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
unsigned char msr_saved_flags;
-
- /*
- * We provide a per-port pm hook.
- */
- void (*pm)(struct uart_port *port,
- unsigned int state, unsigned int old);
};
struct irq_info {
.fifo_size = 128,
.tx_loadsz = 128,
.fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
- .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP,
+ /* UART_CAP_EFR breaks billionon CF bluetooth card. */
+ .flags = UART_CAP_FIFO | UART_CAP_SLEEP,
},
[PORT_16654] = {
.name = "ST16654",
writeb(value, p->membase + offset);
}
+/* Save the LCR value so it can be re-written when a Busy Detect IRQ occurs. */
+static inline void dwapb_save_out_value(struct uart_port *p, int offset,
+ int value)
+{
+ struct uart_8250_port *up =
+ container_of(p, struct uart_8250_port, port);
+
+ if (offset == UART_LCR)
+ up->lcr = value;
+}
+
+/* Read the IER to ensure any interrupt is cleared before returning from ISR. */
+static inline void dwapb_check_clear_ier(struct uart_port *p, int offset)
+{
+ if (offset == UART_TX || offset == UART_IER)
+ p->serial_in(p, UART_IER);
+}
+
static void dwapb_serial_out(struct uart_port *p, int offset, int value)
{
int save_offset = offset;
offset = map_8250_out_reg(p, offset) << p->regshift;
- /* Save the LCR value so it can be re-written when a
- * Busy Detect interrupt occurs. */
- if (save_offset == UART_LCR) {
- struct uart_8250_port *up = (struct uart_8250_port *)p;
- up->lcr = value;
- }
+ dwapb_save_out_value(p, save_offset, value);
writeb(value, p->membase + offset);
- /* Read the IER to ensure any interrupt is cleared before
- * returning from ISR. */
- if (save_offset == UART_TX || save_offset == UART_IER)
- value = p->serial_in(p, UART_IER);
+ dwapb_check_clear_ier(p, save_offset);
+}
+
+static void dwapb32_serial_out(struct uart_port *p, int offset, int value)
+{
+ int save_offset = offset;
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ dwapb_save_out_value(p, save_offset, value);
+ writel(value, p->membase + offset);
+ dwapb_check_clear_ier(p, save_offset);
}
static unsigned int io_serial_in(struct uart_port *p, int offset)
static void set_io_from_upio(struct uart_port *p)
{
- struct uart_8250_port *up = (struct uart_8250_port *)p;
+ struct uart_8250_port *up =
+ container_of(p, struct uart_8250_port, port);
switch (p->iotype) {
case UPIO_HUB6:
p->serial_in = hub6_serial_in;
p->serial_out = dwapb_serial_out;
break;
+ case UPIO_DWAPB32:
+ p->serial_in = mem32_serial_in;
+ p->serial_out = dwapb32_serial_out;
+ break;
+
default:
p->serial_in = io_serial_in;
p->serial_out = io_serial_out;
case UPIO_MEM32:
case UPIO_AU:
case UPIO_DWAPB:
+ case UPIO_DWAPB32:
p->serial_out(p, offset, value);
p->serial_in(p, UART_LCR); /* safe, no side-effects */
break;
{
if (p->capabilities & UART_CAP_SLEEP) {
if (p->capabilities & UART_CAP_EFR) {
- serial_outp(p, UART_LCR, 0xBF);
+ serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_B);
serial_outp(p, UART_EFR, UART_EFR_ECB);
serial_outp(p, UART_LCR, 0);
}
serial_outp(p, UART_IER, sleep ? UART_IERX_SLEEP : 0);
if (p->capabilities & UART_CAP_EFR) {
- serial_outp(p, UART_LCR, 0xBF);
+ serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_B);
serial_outp(p, UART_EFR, 0);
serial_outp(p, UART_LCR, 0);
}
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
serial_outp(up, UART_MCR, UART_MCR_LOOP);
- serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
old_dl = serial_dl_read(up);
serial_dl_write(up, 0x0001);
serial_outp(up, UART_LCR, 0x03);
serial_inp(up, UART_RX);
serial_outp(up, UART_FCR, old_fcr);
serial_outp(up, UART_MCR, old_mcr);
- serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
serial_dl_write(up, old_dl);
serial_outp(up, UART_LCR, old_lcr);
unsigned int id;
old_lcr = serial_inp(p, UART_LCR);
- serial_outp(p, UART_LCR, UART_LCR_DLAB);
+ serial_outp(p, UART_LCR, UART_LCR_CONF_MODE_A);
old_dll = serial_inp(p, UART_DLL);
old_dlm = serial_inp(p, UART_DLM);
* recommended for new designs).
*/
up->acr = 0;
- serial_out(up, UART_LCR, 0xBF);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
serial_out(up, UART_EFR, UART_EFR_ECB);
serial_out(up, UART_LCR, 0x00);
id1 = serial_icr_read(up, UART_ID1);
/*
* Exar ST16C2550 "A2" devices incorrectly detect as
* having an EFR, and report an ID of 0x0201. See
- * http://www.exar.com/info.php?pdf=dan180_oct2004.pdf
+ * http://linux.derkeiler.com/Mailing-Lists/Kernel/2004-11/4812.html
*/
if (autoconfig_read_divisor_id(up) == 0x0201 && size_fifo(up) == 16)
return 1;
* Check for presence of the EFR when DLAB is set.
* Only ST16C650V1 UARTs pass this test.
*/
- serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
if (serial_in(up, UART_EFR) == 0) {
serial_outp(up, UART_EFR, 0xA8);
if (serial_in(up, UART_EFR) != 0) {
* Maybe it requires 0xbf to be written to the LCR.
* (other ST16C650V2 UARTs, TI16C752A, etc)
*/
- serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
if (serial_in(up, UART_EFR) == 0 && !broken_efr(up)) {
DEBUG_AUTOCONF("EFRv2 ");
autoconfig_has_efr(up);
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
status1 = serial_in(up, UART_IIR) >> 5;
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
- serial_outp(up, UART_LCR, UART_LCR_DLAB);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_A);
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE);
status2 = serial_in(up, UART_IIR) >> 5;
serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO);
* We also initialise the EFR (if any) to zero for later. The
* EFR occupies the same register location as the FCR and IIR.
*/
- serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
serial_outp(up, UART_EFR, 0);
serial_outp(up, UART_LCR, 0);
static void serial8250_stop_tx(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
__stop_tx(up);
static void serial8250_start_tx(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
if (!(up->ier & UART_IER_THRI)) {
up->ier |= UART_IER_THRI;
static void serial8250_stop_rx(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
up->ier &= ~UART_IER_RLSI;
up->port.read_status_mask &= ~UART_LSR_DR;
static void serial8250_enable_ms(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
/* no MSR capabilities */
if (up->bugs & UART_BUG_NOMSR)
handled = 1;
end = NULL;
- } else if (up->port.iotype == UPIO_DWAPB &&
+ } else if ((up->port.iotype == UPIO_DWAPB ||
+ up->port.iotype == UPIO_DWAPB32) &&
(iir & UART_IIR_BUSY) == UART_IIR_BUSY) {
/* The DesignWare APB UART has an Busy Detect (0x07)
* interrupt meaning an LCR write attempt occured while the
if (l == i->head && pass_counter++ > PASS_LIMIT) {
/* If we hit this, we're dead. */
- printk(KERN_ERR "serial8250: too much work for "
- "irq%d\n", irq);
+ printk_ratelimited(KERN_ERR
+ "serial8250: too much work for irq%d\n", irq);
break;
}
} while (l != end);
mutex_unlock(&hash_mutex);
}
-/* Base timer interval for polling */
-static inline int poll_timeout(int timeout)
-{
- return timeout > 6 ? (timeout / 2 - 2) : 1;
-}
-
/*
* This function is used to handle ports that do not have an
* interrupt. This doesn't work very well for 16450's, but gives
iir = serial_in(up, UART_IIR);
if (!(iir & UART_IIR_NO_INT))
serial8250_handle_port(up);
- mod_timer(&up->timer, jiffies + poll_timeout(up->port.timeout));
+ mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port));
}
static void serial8250_backup_timeout(unsigned long data)
/* Standard timer interval plus 0.2s to keep the port running */
mod_timer(&up->timer,
- jiffies + poll_timeout(up->port.timeout) + HZ / 5);
+ jiffies + uart_poll_timeout(&up->port) + HZ / 5);
}
static unsigned int serial8250_tx_empty(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned long flags;
unsigned int lsr;
static unsigned int serial8250_get_mctrl(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned int status;
unsigned int ret;
static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned char mcr = 0;
if (mctrl & TIOCM_RTS)
static void serial8250_break_ctl(struct uart_port *port, int break_state)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned long flags;
spin_lock_irqsave(&up->port.lock, flags);
unsigned int status, tmout = 10000;
/* Wait up to 10ms for the character(s) to be sent. */
- do {
+ for (;;) {
status = serial_in(up, UART_LSR);
up->lsr_saved_flags |= status & LSR_SAVE_FLAGS;
+ if ((status & bits) == bits)
+ break;
if (--tmout == 0)
break;
udelay(1);
- } while ((status & bits) != bits);
+ }
/* Wait up to 1s for flow control if necessary */
if (up->port.flags & UPF_CONS_FLOW) {
static int serial8250_get_poll_char(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned char lsr = serial_inp(up, UART_LSR);
if (!(lsr & UART_LSR_DR))
unsigned char c)
{
unsigned int ier;
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
/*
* First save the IER then disable the interrupts
static int serial8250_startup(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned long flags;
unsigned char lsr, iir;
int retval;
+ up->port.fifosize = uart_config[up->port.type].fifo_size;
+ up->tx_loadsz = uart_config[up->port.type].tx_loadsz;
up->capabilities = uart_config[up->port.type].flags;
up->mcr = 0;
if (up->port.type == PORT_16C950) {
/* Wake up and initialize UART */
up->acr = 0;
- serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
serial_outp(up, UART_EFR, UART_EFR_ECB);
serial_outp(up, UART_IER, 0);
serial_outp(up, UART_LCR, 0);
if (up->port.type == PORT_16850) {
unsigned char fctr;
- serial_outp(up, UART_LCR, 0xbf);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
fctr = serial_inp(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX);
serial_outp(up, UART_FCTR, fctr | UART_FCTR_TRGD | UART_FCTR_RX);
up->timer.function = serial8250_backup_timeout;
up->timer.data = (unsigned long)up;
mod_timer(&up->timer, jiffies +
- poll_timeout(up->port.timeout) + HZ / 5);
+ uart_poll_timeout(port) + HZ / 5);
}
/*
*/
if (!is_real_interrupt(up->port.irq)) {
up->timer.data = (unsigned long)up;
- mod_timer(&up->timer, jiffies + poll_timeout(up->port.timeout));
+ mod_timer(&up->timer, jiffies + uart_poll_timeout(port));
} else {
retval = serial_link_irq_chain(up);
if (retval)
static void serial8250_shutdown(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned long flags;
/*
serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
unsigned char cval, fcr = 0;
unsigned long flags;
unsigned int baud, quot;
if (termios->c_cflag & CRTSCTS)
efr |= UART_EFR_CTS;
- serial_outp(up, UART_LCR, 0xBF);
+ serial_outp(up, UART_LCR, UART_LCR_CONF_MODE_B);
serial_outp(up, UART_EFR, efr);
}
port->flags &= ~UPF_HARDPPS_CD;
}
-static void
-serial8250_pm(struct uart_port *port, unsigned int state,
- unsigned int oldstate)
+
+void serial8250_do_pm(struct uart_port *port, unsigned int state,
+ unsigned int oldstate)
{
- struct uart_8250_port *p = (struct uart_8250_port *)port;
+ struct uart_8250_port *p =
+ container_of(port, struct uart_8250_port, port);
serial8250_set_sleep(p, state != 0);
+}
+EXPORT_SYMBOL(serial8250_do_pm);
- if (p->pm)
- p->pm(port, state, oldstate);
+static void
+serial8250_pm(struct uart_port *port, unsigned int state,
+ unsigned int oldstate)
+{
+ if (port->pm)
+ port->pm(port, state, oldstate);
+ else
+ serial8250_do_pm(port, state, oldstate);
}
static unsigned int serial8250_port_size(struct uart_8250_port *pt)
case UPIO_MEM32:
case UPIO_MEM:
case UPIO_DWAPB:
+ case UPIO_DWAPB32:
if (!up->port.mapbase)
break;
case UPIO_MEM32:
case UPIO_MEM:
case UPIO_DWAPB:
+ case UPIO_DWAPB32:
if (!up->port.mapbase)
break;
static void serial8250_release_port(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
serial8250_release_std_resource(up);
if (up->port.type == PORT_RSA)
static int serial8250_request_port(struct uart_port *port)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
int ret = 0;
ret = serial8250_request_std_resource(up);
static void serial8250_config_port(struct uart_port *port, int flags)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
int probeflags = PROBE_ANY;
int ret;
static struct uart_8250_port serial8250_ports[UART_NR];
+static void (*serial8250_isa_config)(int port, struct uart_port *up,
+ unsigned short *capabilities);
+
+void serial8250_set_isa_configurator(
+ void (*v)(int port, struct uart_port *up, unsigned short *capabilities))
+{
+ serial8250_isa_config = v;
+}
+EXPORT_SYMBOL(serial8250_set_isa_configurator);
+
static void __init serial8250_isa_init_ports(void)
{
struct uart_8250_port *up;
up->port.regshift = old_serial_port[i].iomem_reg_shift;
set_io_from_upio(&up->port);
up->port.irqflags |= irqflag;
+ if (serial8250_isa_config != NULL)
+ serial8250_isa_config(i, &up->port, &up->capabilities);
+
}
}
static void serial8250_console_putchar(struct uart_port *port, int ch)
{
- struct uart_8250_port *up = (struct uart_8250_port *)port;
+ struct uart_8250_port *up =
+ container_of(port, struct uart_8250_port, port);
wait_for_xmitr(up, UART_LSR_THRE);
serial_out(up, UART_TX, ch);
.device = uart_console_device,
.setup = serial8250_console_setup,
.early_setup = serial8250_console_early_setup,
- .flags = CON_PRINTBUFFER,
+ .flags = CON_PRINTBUFFER | CON_ANYTIME,
.index = -1,
.data = &serial8250_reg,
};
port.serial_in = p->serial_in;
port.serial_out = p->serial_out;
port.set_termios = p->set_termios;
+ port.pm = p->pm;
port.dev = &dev->dev;
port.irqflags |= irqflag;
ret = serial8250_register_port(&port);
/* Possibly override set_termios call */
if (port->set_termios)
uart->port.set_termios = port->set_termios;
+ if (port->pm)
+ uart->port.pm = port->pm;
+
+ if (serial8250_isa_config != NULL)
+ serial8250_isa_config(0, &uart->port,
+ &uart->capabilities);
ret = uart_add_one_port(&serial8250_reg, &uart->port);
if (ret == 0)
projects / mv-sheeva.git / blobdiff