#include <linux/console.h>
#include <linux/delay.h>
#include <linux/io.h>
-
-#if defined(CONFIG_PPC_MERGE)
#include <linux/of.h>
#include <linux/of_platform.h>
-#else
-#include <linux/platform_device.h>
-#endif
#include <asm/mpc52xx.h>
#include <asm/mpc512x.h>
* it's cleared, then a memset(...,0,...) should be added to
* the console_init
*/
-#if defined(CONFIG_PPC_MERGE)
+
/* lookup table for matching device nodes to index numbers */
static struct device_node *mpc52xx_uart_nodes[MPC52xx_PSC_MAXNUM];
static void mpc52xx_uart_of_enumerate(void);
-#endif
#define PSC(port) ((struct mpc52xx_psc __iomem *)((port)->membase))
#define uart_console(port) (0)
#endif
-#if defined(CONFIG_PPC_MERGE)
-static struct of_device_id mpc52xx_uart_of_match[] = {
-#ifdef CONFIG_PPC_MPC52xx
- { .compatible = "fsl,mpc5200-psc-uart", .data = &mpc52xx_psc_ops, },
- /* binding used by old lite5200 device trees: */
- { .compatible = "mpc5200-psc-uart", .data = &mpc52xx_psc_ops, },
- /* binding used by efika: */
- { .compatible = "mpc5200-serial", .data = &mpc52xx_psc_ops, },
-#endif
-#ifdef CONFIG_PPC_MPC512x
- { .compatible = "fsl,mpc5121-psc-uart", .data = &mpc512x_psc_ops, },
- {},
-#endif
-};
-#if defined(CONFIG_PPC_MERGE)
-static const struct of_device_id mpc52xx_uart_of_match[] = {
- {.type = "serial",
- .compatible = "mpc5200-psc-uart",
-#endif
- {},
-};
-#endif
-
-#endif
-
/* ======================================================================== */
/* PSC fifo operations for isolating differences between 52xx and 512x */
/* ======================================================================== */
/* Search for bus-frequency property in this node or a parent */
static unsigned long mpc52xx_getuartclk(void *p)
{
-#if defined(CONFIG_PPC_MERGE)
/*
* 5200 UARTs have a / 32 prescaler
* but the generic serial code assumes 16
* so return ipb freq / 2
*/
return mpc52xx_find_ipb_freq(p) / 2;
-#else
- pr_debug("unexpected call to mpc52xx_getuartclk with arch/ppc\n");
- return NULL;
-#endif
}
static struct psc_ops mpc52xx_psc_ops = {
static void
mpc52xx_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
- /* Not implemented */
+ if (mctrl & TIOCM_RTS)
+ out_8(&PSC(port)->op1, MPC52xx_PSC_OP_RTS);
+ else
+ out_8(&PSC(port)->op0, MPC52xx_PSC_OP_RTS);
}
static unsigned int
mpc52xx_uart_get_mctrl(struct uart_port *port)
{
- /* Not implemented */
- return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+ unsigned int ret = TIOCM_DSR;
+ u8 status = in_8(&PSC(port)->mpc52xx_psc_ipcr);
+
+ if (!(status & MPC52xx_PSC_CTS))
+ ret |= TIOCM_CTS;
+ if (!(status & MPC52xx_PSC_DCD))
+ ret |= TIOCM_CAR;
+
+ return ret;
}
static void
static void
mpc52xx_uart_enable_ms(struct uart_port *port)
{
- /* Not implemented */
+ struct mpc52xx_psc __iomem *psc = PSC(port);
+
+ /* clear D_*-bits by reading them */
+ in_8(&psc->mpc52xx_psc_ipcr);
+ /* enable CTS and DCD as IPC interrupts */
+ out_8(&psc->mpc52xx_psc_acr, MPC52xx_PSC_IEC_CTS | MPC52xx_PSC_IEC_DCD);
+
+ port->read_status_mask |= MPC52xx_PSC_IMR_IPC;
+ out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
}
static void
MPC52xx_PSC_MODE_ONE_STOP_5_BITS :
MPC52xx_PSC_MODE_ONE_STOP;
+ if (new->c_cflag & CRTSCTS) {
+ mr1 |= MPC52xx_PSC_MODE_RXRTS;
+ mr2 |= MPC52xx_PSC_MODE_TXCTS;
+ }
baud = uart_get_baud_rate(port, new, old, 0, port->uartclk/16);
quot = uart_get_divisor(port, baud);
/* Update the per-port timeout */
uart_update_timeout(port, new->c_cflag, baud);
- /* Do our best to flush TX & RX, so we don't loose anything */
- /* But we don't wait indefinitly ! */
+ /* Do our best to flush TX & RX, so we don't lose anything */
+ /* But we don't wait indefinitely ! */
j = 5000000; /* Maximum wait */
/* FIXME Can't receive chars since set_termios might be called at early
* boot for the console, all stuff is not yet ready to receive at that
out_8(&psc->ctur, ctr >> 8);
out_8(&psc->ctlr, ctr & 0xff);
+ if (UART_ENABLE_MS(port, new->c_cflag))
+ mpc52xx_uart_enable_ms(port);
+
/* Reenable TX & RX */
out_8(&psc->command, MPC52xx_PSC_TX_ENABLE);
out_8(&psc->command, MPC52xx_PSC_RX_ENABLE);
static inline int
mpc52xx_uart_int_rx_chars(struct uart_port *port)
{
- struct tty_struct *tty = port->info->tty;
+ struct tty_struct *tty = port->info->port.tty;
unsigned char ch, flag;
unsigned short status;
if (status & MPC52xx_PSC_SR_RB) {
flag = TTY_BREAK;
uart_handle_break(port);
- } else if (status & MPC52xx_PSC_SR_PE)
+ port->icount.brk++;
+ } else if (status & MPC52xx_PSC_SR_PE) {
flag = TTY_PARITY;
- else if (status & MPC52xx_PSC_SR_FE)
+ port->icount.parity++;
+ }
+ else if (status & MPC52xx_PSC_SR_FE) {
flag = TTY_FRAME;
+ port->icount.frame++;
+ }
/* Clear error condition */
out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT);
* affect the current character
*/
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ port->icount.overrun++;
}
}
+ spin_unlock(&port->lock);
tty_flip_buffer_push(tty);
+ spin_lock(&port->lock);
return psc_ops->raw_rx_rdy(port);
}
struct uart_port *port = dev_id;
unsigned long pass = ISR_PASS_LIMIT;
unsigned int keepgoing;
+ u8 status;
spin_lock(&port->lock);
if (psc_ops->tx_rdy(port))
keepgoing |= mpc52xx_uart_int_tx_chars(port);
+ status = in_8(&PSC(port)->mpc52xx_psc_ipcr);
+ if (status & MPC52xx_PSC_D_DCD)
+ uart_handle_dcd_change(port, !(status & MPC52xx_PSC_DCD));
+
+ if (status & MPC52xx_PSC_D_CTS)
+ uart_handle_cts_change(port, !(status & MPC52xx_PSC_CTS));
+
/* Limit number of iteration */
if (!(--pass))
keepgoing = 0;
/* CT{U,L}R are write-only ! */
*baud = CONFIG_SERIAL_MPC52xx_CONSOLE_BAUD;
-#if !defined(CONFIG_PPC_MERGE)
- if (__res.bi_baudrate)
- *baud = __res.bi_baudrate;
-#endif
/* Parse them */
switch (mr1 & MPC52xx_PSC_MODE_BITS_MASK) {
psc_ops->cw_restore_ints(port);
}
-#if !defined(CONFIG_PPC_MERGE)
-static int __init
-mpc52xx_console_setup(struct console *co, char *options)
-{
- struct uart_port *port = &mpc52xx_uart_ports[co->index];
-
- int baud = CONFIG_SERIAL_MPC52xx_CONSOLE_BAUD;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
-
- if (co->index < 0 || co->index >= MPC52xx_PSC_MAXNUM)
- return -EINVAL;
-
- /* Basic port init. Needed since we use some uart_??? func before
- * real init for early access */
- spin_lock_init(&port->lock);
- port->uartclk = __res.bi_ipbfreq / 2; /* Look at CTLR doc */
- port->ops = &mpc52xx_uart_ops;
- port->mapbase = MPC52xx_PA(MPC52xx_PSCx_OFFSET(co->index+1));
-
- /* We ioremap ourself */
- port->membase = ioremap(port->mapbase, MPC52xx_PSC_SIZE);
- if (port->membase == NULL)
- return -EINVAL;
-
- /* Setup the port parameters accoding to options */
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
- else
- mpc52xx_console_get_options(port, &baud, &parity, &bits, &flow);
-
- return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-#else
static int __init
mpc52xx_console_setup(struct console *co, char *options)
return uart_set_options(port, co, baud, parity, bits, flow);
}
-#endif /* defined(CONFIG_PPC_MERGE) */
static struct uart_driver mpc52xx_uart_driver;
static int __init
mpc52xx_console_init(void)
{
-#if defined(CONFIG_PPC_MERGE)
mpc52xx_uart_of_enumerate();
-#endif
register_console(&mpc52xx_console);
return 0;
}
.cons = MPC52xx_PSC_CONSOLE,
};
-
-#if !defined(CONFIG_PPC_MERGE)
/* ======================================================================== */
-/* Platform Driver */
+/* OF Platform Driver */
/* ======================================================================== */
-static int __devinit
-mpc52xx_uart_probe(struct platform_device *dev)
-{
- struct resource *res = dev->resource;
-
- struct uart_port *port = NULL;
- int i, idx, ret;
-
- /* Check validity & presence */
- idx = dev->id;
- if (idx < 0 || idx >= MPC52xx_PSC_MAXNUM)
- return -EINVAL;
-
- if (!mpc52xx_match_psc_function(idx, "uart"))
- return -ENODEV;
-
- /* Init the port structure */
- port = &mpc52xx_uart_ports[idx];
-
- spin_lock_init(&port->lock);
- port->uartclk = __res.bi_ipbfreq / 2; /* Look at CTLR doc */
- port->fifosize = 512;
- port->iotype = UPIO_MEM;
- port->flags = UPF_BOOT_AUTOCONF |
- (uart_console(port) ? 0 : UPF_IOREMAP);
- port->line = idx;
- port->ops = &mpc52xx_uart_ops;
- port->dev = &dev->dev;
-
- /* Search for IRQ and mapbase */
- for (i = 0 ; i < dev->num_resources ; i++, res++) {
- if (res->flags & IORESOURCE_MEM)
- port->mapbase = res->start;
- else if (res->flags & IORESOURCE_IRQ)
- port->irq = res->start;
- }
- if (!port->irq || !port->mapbase)
- return -EINVAL;
-
- /* Add the port to the uart sub-system */
- ret = uart_add_one_port(&mpc52xx_uart_driver, port);
- if (!ret)
- platform_set_drvdata(dev, (void *)port);
-
- return ret;
-}
-
-static int
-mpc52xx_uart_remove(struct platform_device *dev)
-{
- struct uart_port *port = (struct uart_port *) platform_get_drvdata(dev);
-
- platform_set_drvdata(dev, NULL);
-
- if (port)
- uart_remove_one_port(&mpc52xx_uart_driver, port);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int
-mpc52xx_uart_suspend(struct platform_device *dev, pm_message_t state)
-{
- struct uart_port *port = (struct uart_port *) platform_get_drvdata(dev);
-
- if (port)
- uart_suspend_port(&mpc52xx_uart_driver, port);
-
- return 0;
-}
-
-static int
-mpc52xx_uart_resume(struct platform_device *dev)
-{
- struct uart_port *port = (struct uart_port *) platform_get_drvdata(dev);
-
- if (port)
- uart_resume_port(&mpc52xx_uart_driver, port);
-
- return 0;
-}
+static struct of_device_id mpc52xx_uart_of_match[] = {
+#ifdef CONFIG_PPC_MPC52xx
+ { .compatible = "fsl,mpc5200-psc-uart", .data = &mpc52xx_psc_ops, },
+ /* binding used by old lite5200 device trees: */
+ { .compatible = "mpc5200-psc-uart", .data = &mpc52xx_psc_ops, },
+ /* binding used by efika: */
+ { .compatible = "mpc5200-serial", .data = &mpc52xx_psc_ops, },
#endif
-
-
-static struct platform_driver mpc52xx_uart_platform_driver = {
- .probe = mpc52xx_uart_probe,
- .remove = mpc52xx_uart_remove,
-#ifdef CONFIG_PM
- .suspend = mpc52xx_uart_suspend,
- .resume = mpc52xx_uart_resume,
+#ifdef CONFIG_PPC_MPC512x
+ { .compatible = "fsl,mpc5121-psc-uart", .data = &mpc512x_psc_ops, },
#endif
- .driver = {
- .owner = THIS_MODULE,
- .name = "mpc52xx-psc",
- },
+ {},
};
-#endif /* !defined(CONFIG_PPC_MERGE) */
-
-
-#if defined(CONFIG_PPC_MERGE)
-/* ======================================================================== */
-/* OF Platform Driver */
-/* ======================================================================== */
static int __devinit
mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match)
return ret;
port->mapbase = res.start;
+ if (!port->mapbase) {
+ dev_dbg(&op->dev, "Could not allocate resources for PSC\n");
+ return -EINVAL;
+ }
+
port->irq = irq_of_parse_and_map(op->node, 0);
+ if (port->irq == NO_IRQ) {
+ dev_dbg(&op->dev, "Could not get irq\n");
+ return -EINVAL;
+ }
dev_dbg(&op->dev, "mpc52xx-psc uart at %p, irq=%x, freq=%i\n",
(void *)port->mapbase, port->irq, port->uartclk);
- if ((port->irq == NO_IRQ) || !port->mapbase) {
- printk(KERN_ERR "Could not allocate resources for PSC\n");
- return -EINVAL;
- }
-
/* Add the port to the uart sub-system */
ret = uart_add_one_port(&mpc52xx_uart_driver, port);
- if (!ret)
- dev_set_drvdata(&op->dev, (void *)port);
+ if (ret) {
+ irq_dispose_mapping(port->irq);
+ return ret;
+ }
- return ret;
+ dev_set_drvdata(&op->dev, (void *)port);
+ return 0;
}
static int
.name = "mpc52xx-psc-uart",
},
};
-#endif /* defined(CONFIG_PPC_MERGE) */
/* ======================================================================== */
return ret;
}
-#if defined(CONFIG_PPC_MERGE)
mpc52xx_uart_of_enumerate();
ret = of_register_platform_driver(&mpc52xx_uart_of_driver);
uart_unregister_driver(&mpc52xx_uart_driver);
return ret;
}
-#else
- psc_ops = &mpc52xx_psc_ops;
- ret = platform_driver_register(&mpc52xx_uart_platform_driver);
- if (ret) {
- printk(KERN_ERR "%s: platform_driver_register failed (%i)\n",
- __FILE__, ret);
- uart_unregister_driver(&mpc52xx_uart_driver);
- return ret;
- }
-#endif
return 0;
}
static void __exit
mpc52xx_uart_exit(void)
{
-#if defined(CONFIG_PPC_MERGE)
of_unregister_platform_driver(&mpc52xx_uart_of_driver);
-#else
- platform_driver_unregister(&mpc52xx_uart_platform_driver);
-#endif
uart_unregister_driver(&mpc52xx_uart_driver);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff