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sh-sci: allow single port platform devices 

Allow registration of single port sh-sci platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-01-21 15:13:50 +00:00 committed by Paul Mundt
parent a5660adae8
commit 0ee7071292
1 changed files with 72 additions and 53 deletions
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125
drivers/serial/sh-sci.c
View File

@ -1221,6 +1221,70 @@ static int __devexit sci_remove(struct platform_device *dev)
return 0;
}
static int __devinit sci_probe_single(struct platform_device *dev,
unsigned int index,
struct plat_sci_port *p,
struct sci_port *sciport)
{
struct sh_sci_priv *priv = platform_get_drvdata(dev);
unsigned long flags;
int ret;
/* Sanity check */
if (unlikely(index >= SCI_NPORTS)) {
dev_notice(&dev->dev, "Attempting to register port "
"%d when only %d are available.\n",
index+1, SCI_NPORTS);
dev_notice(&dev->dev, "Consider bumping "
"CONFIG_SERIAL_SH_SCI_NR_UARTS!\n");
return 0;
}
sciport->port.mapbase = p->mapbase;
if (p->mapbase && !p->membase) {
if (p->flags & UPF_IOREMAP) {
p->membase = ioremap_nocache(p->mapbase, 0x40);
if (IS_ERR(p->membase))
return PTR_ERR(p->membase);
} else {
/*
* For the simple (and majority of) cases
* where we don't need to do any remapping,
* just cast the cookie directly.
*/
p->membase = (void __iomem *)p->mapbase;
}
}
sciport->port.membase = p->membase;
sciport->port.irq = p->irqs[SCIx_TXI_IRQ];
sciport->port.flags = p->flags;
sciport->port.dev = &dev->dev;
sciport->type = sciport->port.type = p->type;
memcpy(&sciport->irqs, &p->irqs, sizeof(p->irqs));
ret = uart_add_one_port(&sci_uart_driver, &sciport->port);
if (ret) {
if (p->flags & UPF_IOREMAP)
iounmap(p->membase);
return ret;
}
INIT_LIST_HEAD(&sciport->node);
spin_lock_irqsave(&priv->lock, flags);
list_add(&sciport->node, &priv->ports);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
/*
* Register a set of serial devices attached to a platform device. The
* list is terminated with a zero flags entry, which means we expect
@ -1232,7 +1296,6 @@ static int __devinit sci_probe(struct platform_device *dev)
struct plat_sci_port *p = dev->dev.platform_data;
struct sh_sci_priv *priv;
int i, ret = -EINVAL;
unsigned long flags;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
@ -1247,60 +1310,16 @@ static int __devinit sci_probe(struct platform_device *dev)
cpufreq_register_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER);
#endif
for (i = 0; p && p->flags != 0; p++, i++) {
struct sci_port *sciport = &sci_ports[i];
/* Sanity check */
if (unlikely(i == SCI_NPORTS)) {
dev_notice(&dev->dev, "Attempting to register port "
"%d when only %d are available.\n",
i+1, SCI_NPORTS);
dev_notice(&dev->dev, "Consider bumping "
"CONFIG_SERIAL_SH_SCI_NR_UARTS!\n");
break;
}
sciport->port.mapbase = p->mapbase;
if (p->mapbase && !p->membase) {
if (p->flags & UPF_IOREMAP) {
p->membase = ioremap_nocache(p->mapbase, 0x40);
if (IS_ERR(p->membase)) {
ret = PTR_ERR(p->membase);
goto err_unreg;
}
} else {
/*
* For the simple (and majority of) cases
* where we don't need to do any remapping,
* just cast the cookie directly.
*/
p->membase = (void __iomem *)p->mapbase;
}
}
sciport->port.membase = p->membase;
sciport->port.irq = p->irqs[SCIx_TXI_IRQ];
sciport->port.flags = p->flags;
sciport->port.dev = &dev->dev;
sciport->type = sciport->port.type = p->type;
memcpy(&sciport->irqs, &p->irqs, sizeof(p->irqs));
ret = uart_add_one_port(&sci_uart_driver, &sciport->port);
if (ret && (p->flags & UPF_IOREMAP)) {
iounmap(p->membase);
if (dev->id != -1) {
ret = sci_probe_single(dev, dev->id, p, &sci_ports[dev->id]);
if (ret)
goto err_unreg;
} else {
for (i = 0; p && p->flags != 0; p++, i++) {
ret = sci_probe_single(dev, i, p, &sci_ports[i]);
if (ret)
goto err_unreg;
}
INIT_LIST_HEAD(&sciport->node);
spin_lock_irqsave(&priv->lock, flags);
list_add(&sciport->node, &priv->ports);
spin_unlock_irqrestore(&priv->lock, flags);
}
#ifdef CONFIG_SH_STANDARD_BIOS