#undef DEBUG_HARD
#undef USE_CTRL_O_SYSRQ
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/tty.h>
#define PWRDBG(fmt, arg...) printk(KERN_DEBUG fmt , ## arg)
+#ifdef CONFIG_SERIAL_PMACZILOG_TTYS
+#define PMACZILOG_MAJOR TTY_MAJOR
+#define PMACZILOG_MINOR 64
+#define PMACZILOG_NAME "ttyS"
+#else
+#define PMACZILOG_MAJOR 204
+#define PMACZILOG_MINOR 192
+#define PMACZILOG_NAME "ttyPZ"
+#endif
+
/*
* For the sake of early serial console, we can do a pre-probe
static struct uart_driver pmz_uart_reg = {
.owner = THIS_MODULE,
- .driver_name = "ttyS",
- .dev_name = "ttyS",
- .major = TTY_MAJOR,
+ .driver_name = PMACZILOG_NAME,
+ .dev_name = PMACZILOG_NAME,
+ .major = PMACZILOG_MAJOR,
+ .minor = PMACZILOG_MINOR,
};
}
}
-static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap,
- struct pt_regs *regs)
+static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap)
{
struct tty_struct *tty = NULL;
unsigned char ch, r1, drop, error, flag;
}
/* Sanity check, make sure the old bug is no longer happening */
- if (uap->port.info == NULL || uap->port.info->tty == NULL) {
+ if (uap->port.state == NULL || uap->port.state->port.tty == NULL) {
WARN_ON(1);
(void)read_zsdata(uap);
return NULL;
}
- tty = uap->port.info->tty;
+ tty = uap->port.state->port.tty;
while (1) {
error = 0;
if (uap->port.sysrq) {
int swallow;
spin_unlock(&uap->port.lock);
- swallow = uart_handle_sysrq_char(&uap->port, ch, regs);
+ swallow = uart_handle_sysrq_char(&uap->port, ch);
spin_lock(&uap->port.lock);
if (swallow)
goto next_char;
return tty;
}
-static void pmz_status_handle(struct uart_pmac_port *uap, struct pt_regs *regs)
+static void pmz_status_handle(struct uart_pmac_port *uap)
{
unsigned char status;
uart_handle_cts_change(&uap->port,
!(status & CTS));
- wake_up_interruptible(&uap->port.info->delta_msr_wait);
+ wake_up_interruptible(&uap->port.state->port.delta_msr_wait);
}
if (status & BRK_ABRT)
goto ack_tx_int;
}
+ /* Under some circumstances, we see interrupts reported for
+ * a closed channel. The interrupt mask in R1 is clear, but
+ * R3 still signals the interrupts and we see them when taking
+ * an interrupt for the other channel (this could be a qemu
+ * bug but since the ESCC doc doesn't specify precsiely whether
+ * R3 interrup status bits are masked by R1 interrupt enable
+ * bits, better safe than sorry). --BenH.
+ */
+ if (!ZS_IS_OPEN(uap))
+ goto ack_tx_int;
+
if (uap->port.x_char) {
uap->flags |= PMACZILOG_FLAG_TX_ACTIVE;
write_zsdata(uap, uap->port.x_char);
return;
}
- if (uap->port.info == NULL)
+ if (uap->port.state == NULL)
goto ack_tx_int;
- xmit = &uap->port.info->xmit;
+ xmit = &uap->port.state->xmit;
if (uart_circ_empty(xmit)) {
uart_write_wakeup(&uap->port);
goto ack_tx_int;
}
/* Hrm... we register that twice, fixme later.... */
-static irqreturn_t pmz_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t pmz_interrupt(int irq, void *dev_id)
{
struct uart_pmac_port *uap = dev_id;
struct uart_pmac_port *uap_a;
write_zsreg(uap_a, R0, RES_H_IUS);
zssync(uap_a);
if (r3 & CHAEXT)
- pmz_status_handle(uap_a, regs);
+ pmz_status_handle(uap_a);
if (r3 & CHARxIP)
- tty = pmz_receive_chars(uap_a, regs);
+ tty = pmz_receive_chars(uap_a);
if (r3 & CHATxIP)
pmz_transmit_chars(uap_a);
rc = IRQ_HANDLED;
write_zsreg(uap_b, R0, RES_H_IUS);
zssync(uap_b);
if (r3 & CHBEXT)
- pmz_status_handle(uap_b, regs);
+ pmz_status_handle(uap_b);
if (r3 & CHBRxIP)
- tty = pmz_receive_chars(uap_b, regs);
+ tty = pmz_receive_chars(uap_b);
if (r3 & CHBTxIP)
pmz_transmit_chars(uap_b);
rc = IRQ_HANDLED;
port->icount.tx++;
port->x_char = 0;
} else {
- struct circ_buf *xmit = &port->info->xmit;
+ struct circ_buf *xmit = &port->state->xmit;
write_zsdata(uap, xmit->buf[xmit->tail]);
zssync(uap);
}
pmz_get_port_A(uap)->flags |= PMACZILOG_FLAG_IS_IRQ_ON;
- if (request_irq(uap->port.irq, pmz_interrupt, SA_SHIRQ, "PowerMac Zilog", uap)) {
+ if (request_irq(uap->port.irq, pmz_interrupt, IRQF_SHARED, "PowerMac Zilog", uap)) {
dev_err(&uap->dev->ofdev.dev,
"Unable to register zs interrupt handler.\n");
pmz_set_scc_power(uap, 0);
}
-static void __pmz_set_termios(struct uart_port *port, struct termios *termios,
- struct termios *old)
+static void __pmz_set_termios(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old)
{
struct uart_pmac_port *uap = to_pmz(port);
unsigned long baud;
if (ZS_IS_ASLEEP(uap))
return;
- memcpy(&uap->termios_cache, termios, sizeof(struct termios));
+ memcpy(&uap->termios_cache, termios, sizeof(struct ktermios));
/* XXX Check which revs of machines actually allow 1 and 4Mb speeds
* on the IR dongle. Note that the IRTTY driver currently doesn't know
}
/* The port lock is not held. */
-static void pmz_set_termios(struct uart_port *port, struct termios *termios,
- struct termios *old)
+static void pmz_set_termios(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old)
{
struct uart_pmac_port *uap = to_pmz(port);
unsigned long flags;
return -EINVAL;
}
+#ifdef CONFIG_CONSOLE_POLL
+
+static int pmz_poll_get_char(struct uart_port *port)
+{
+ struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
+
+ while ((read_zsreg(uap, R0) & Rx_CH_AV) == 0)
+ udelay(5);
+ return read_zsdata(uap);
+}
+
+static void pmz_poll_put_char(struct uart_port *port, unsigned char c)
+{
+ struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
+
+ /* Wait for the transmit buffer to empty. */
+ while ((read_zsreg(uap, R0) & Tx_BUF_EMP) == 0)
+ udelay(5);
+ write_zsdata(uap, c);
+}
+
+#endif
+
static struct uart_ops pmz_pops = {
.tx_empty = pmz_tx_empty,
.set_mctrl = pmz_set_mctrl,
.request_port = pmz_request_port,
.config_port = pmz_config_port,
.verify_port = pmz_verify_port,
+#ifdef CONFIG_CONSOLE_POLL
+ .poll_get_char = pmz_poll_get_char,
+ .poll_put_char = pmz_poll_put_char,
+#endif
};
/*
static int __init pmz_init_port(struct uart_pmac_port *uap)
{
struct device_node *np = uap->node;
- char *conn;
- struct slot_names_prop {
+ const char *conn;
+ const struct slot_names_prop {
int count;
char name[1];
} *slots;
uap->flags &= ~PMACZILOG_FLAG_HAS_DMA;
goto no_dma;
}
- uap->tx_dma_irq = np->intrs[1].line;
- uap->rx_dma_irq = np->intrs[2].line;
+ uap->tx_dma_irq = irq_of_parse_and_map(np, 1);
+ uap->rx_dma_irq = irq_of_parse_and_map(np, 2);
}
no_dma:
/*
* Detect port type
*/
- if (device_is_compatible(np, "cobalt"))
+ if (of_device_is_compatible(np, "cobalt"))
uap->flags |= PMACZILOG_FLAG_IS_INTMODEM;
- conn = get_property(np, "AAPL,connector", &len);
+ conn = of_get_property(np, "AAPL,connector", &len);
if (conn && (strcmp(conn, "infrared") == 0))
uap->flags |= PMACZILOG_FLAG_IS_IRDA;
uap->port_type = PMAC_SCC_ASYNC;
/* 1999 Powerbook G3 has slot-names property instead */
- slots = (struct slot_names_prop *)get_property(np, "slot-names", &len);
+ slots = of_get_property(np, "slot-names", &len);
if (slots && slots->count > 0) {
if (strcmp(slots->name, "IrDA") == 0)
uap->flags |= PMACZILOG_FLAG_IS_IRDA;
if (ZS_IS_IRDA(uap))
uap->port_type = PMAC_SCC_IRDA;
if (ZS_IS_INTMODEM(uap)) {
- struct device_node* i2c_modem = find_devices("i2c-modem");
+ struct device_node* i2c_modem =
+ of_find_node_by_name(NULL, "i2c-modem");
if (i2c_modem) {
- char* mid = get_property(i2c_modem, "modem-id", NULL);
+ const char* mid =
+ of_get_property(i2c_modem, "modem-id", NULL);
if (mid) switch(*mid) {
case 0x04 :
case 0x05 :
}
printk(KERN_INFO "pmac_zilog: i2c-modem detected, id: %d\n",
mid ? (*mid) : 0);
+ of_node_put(i2c_modem);
} else {
printk(KERN_INFO "pmac_zilog: serial modem detected\n");
}
* Init remaining bits of "port" structure
*/
uap->port.iotype = UPIO_MEM;
- uap->port.irq = np->intrs[0].line;
+ uap->port.irq = irq_of_parse_and_map(np, 0);
uap->port.uartclk = ZS_CLOCK;
uap->port.fifosize = 1;
uap->port.ops = &pmz_pops;
uap->port.type = PORT_PMAC_ZILOG;
uap->port.flags = 0;
+ /*
+ * Fixup for the port on Gatwick for which the device-tree has
+ * missing interrupts. Normally, the macio_dev would contain
+ * fixed up interrupt info, but we use the device-tree directly
+ * here due to early probing so we need the fixup too.
+ */
+ if (uap->port.irq == NO_IRQ &&
+ np->parent && np->parent->parent &&
+ of_device_is_compatible(np->parent->parent, "gatwick")) {
+ /* IRQs on gatwick are offset by 64 */
+ uap->port.irq = irq_create_mapping(NULL, 64 + 15);
+ uap->tx_dma_irq = irq_create_mapping(NULL, 64 + 4);
+ uap->rx_dma_irq = irq_create_mapping(NULL, 64 + 5);
+ }
+
/* Setup some valid baud rate information in the register
* shadows so we don't write crap there before baud rate is
* first initialized.
if (pm_state.event == mdev->ofdev.dev.power.power_state.event)
return 0;
- pmz_debug("suspend, switching to state %d\n", pm_state);
+ pmz_debug("suspend, switching to state %d\n", pm_state.event);
state = pmz_uart_reg.state + uap->port.line;
mutex_lock(&pmz_irq_mutex);
- mutex_lock(&state->mutex);
+ mutex_lock(&state->port.mutex);
spin_lock_irqsave(&uap->port.lock, flags);
/* Shut the chip down */
pmz_set_scc_power(uap, 0);
- mutex_unlock(&state->mutex);
+ mutex_unlock(&state->port.mutex);
mutex_unlock(&pmz_irq_mutex);
pmz_debug("suspend, switching complete\n");
state = pmz_uart_reg.state + uap->port.line;
mutex_lock(&pmz_irq_mutex);
- mutex_lock(&state->mutex);
+ mutex_lock(&state->port.mutex);
spin_lock_irqsave(&uap->port.lock, flags);
if (!ZS_IS_OPEN(uap) && !ZS_IS_CONS(uap)) {
}
bail:
- mutex_unlock(&state->mutex);
+ mutex_unlock(&state->port.mutex);
mutex_unlock(&pmz_irq_mutex);
/* Right now, we deal with delay by blocking here, I'll be
static int __init pmz_console_setup(struct console *co, char *options);
static struct console pmz_console = {
- .name = "ttyS",
+ .name = PMACZILOG_NAME,
.write = pmz_console_write,
.device = uart_console_device,
.setup = pmz_console_setup,
pmz_uart_reg.nr = pmz_ports_count;
pmz_uart_reg.cons = PMACZILOG_CONSOLE;
- pmz_uart_reg.minor = 64;
/*
* Register this driver with the serial core
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff