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path: root/drivers/net/irda/smsc-ircc2.c
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Diffstat (limited to 'drivers/net/irda/smsc-ircc2.c')
-rw-r--r--drivers/net/irda/smsc-ircc2.c161
1 files changed, 102 insertions, 59 deletions
diff --git a/drivers/net/irda/smsc-ircc2.c b/drivers/net/irda/smsc-ircc2.c
index dd89bda1f13..ec94ecdb103 100644
--- a/drivers/net/irda/smsc-ircc2.c
+++ b/drivers/net/irda/smsc-ircc2.c
@@ -53,6 +53,7 @@
#include <linux/rtnetlink.h>
#include <linux/serial_reg.h>
#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/dma.h>
@@ -213,14 +214,15 @@ static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base);
/* Power Management */
-static int smsc_ircc_suspend(struct device *dev, pm_message_t state, u32 level);
-static int smsc_ircc_resume(struct device *dev, u32 level);
+static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state);
+static int smsc_ircc_resume(struct platform_device *dev);
-static struct device_driver smsc_ircc_driver = {
- .name = SMSC_IRCC2_DRIVER_NAME,
- .bus = &platform_bus_type,
+static struct platform_driver smsc_ircc_driver = {
.suspend = smsc_ircc_suspend,
.resume = smsc_ircc_resume,
+ .driver = {
+ .name = SMSC_IRCC2_DRIVER_NAME,
+ },
};
/* Transceivers for SMSC-ircc */
@@ -345,7 +347,7 @@ static int __init smsc_ircc_init(void)
IRDA_DEBUG(1, "%s\n", __FUNCTION__);
- ret = driver_register(&smsc_ircc_driver);
+ ret = platform_driver_register(&smsc_ircc_driver);
if (ret) {
IRDA_ERROR("%s, Can't register driver!\n", driver_name);
return ret;
@@ -377,7 +379,7 @@ static int __init smsc_ircc_init(void)
}
if (ret)
- driver_unregister(&smsc_ircc_driver);
+ platform_driver_unregister(&smsc_ircc_driver);
return ret;
}
@@ -490,7 +492,7 @@ static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u
err = PTR_ERR(self->pldev);
goto err_out5;
}
- dev_set_drvdata(&self->pldev->dev, self);
+ platform_set_drvdata(self->pldev, self);
IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
dev_count++;
@@ -638,21 +640,14 @@ static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self)
*/
static void smsc_ircc_init_chip(struct smsc_ircc_cb *self)
{
- int iobase, ir_mode, ctrl, fast;
-
- IRDA_ASSERT(self != NULL, return;);
-
- iobase = self->io.fir_base;
- ir_mode = IRCC_CFGA_IRDA_SIR_A;
- ctrl = 0;
- fast = 0;
+ int iobase = self->io.fir_base;
register_bank(iobase, 0);
outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
outb(0x00, iobase + IRCC_MASTER);
register_bank(iobase, 1);
- outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | ir_mode),
+ outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A),
iobase + IRCC_SCE_CFGA);
#ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */
@@ -666,10 +661,10 @@ static void smsc_ircc_init_chip(struct smsc_ircc_cb *self)
outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD);
register_bank(iobase, 4);
- outb((inb(iobase + IRCC_CONTROL) & 0x30) | ctrl, iobase + IRCC_CONTROL);
+ outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL);
register_bank(iobase, 0);
- outb(fast, iobase + IRCC_LCR_A);
+ outb(0, iobase + IRCC_LCR_A);
smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
@@ -1556,6 +1551,46 @@ static int ircc_is_receiving(struct smsc_ircc_cb *self)
}
#endif /* unused */
+static int smsc_ircc_request_irq(struct smsc_ircc_cb *self)
+{
+ int error;
+
+ error = request_irq(self->io.irq, smsc_ircc_interrupt, 0,
+ self->netdev->name, self->netdev);
+ if (error)
+ IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n",
+ __FUNCTION__, self->io.irq, error);
+
+ return error;
+}
+
+static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&self->lock, flags);
+
+ self->io.speed = 0;
+ smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
+
+ spin_unlock_irqrestore(&self->lock, flags);
+}
+
+static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self)
+{
+ int iobase = self->io.fir_base;
+ unsigned long flags;
+
+ spin_lock_irqsave(&self->lock, flags);
+
+ register_bank(iobase, 0);
+ outb(0, iobase + IRCC_IER);
+ outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
+ outb(0x00, iobase + IRCC_MASTER);
+
+ spin_unlock_irqrestore(&self->lock, flags);
+}
+
/*
* Function smsc_ircc_net_open (dev)
@@ -1567,7 +1602,6 @@ static int smsc_ircc_net_open(struct net_device *dev)
{
struct smsc_ircc_cb *self;
char hwname[16];
- unsigned long flags;
IRDA_DEBUG(1, "%s\n", __FUNCTION__);
@@ -1575,6 +1609,11 @@ static int smsc_ircc_net_open(struct net_device *dev)
self = netdev_priv(dev);
IRDA_ASSERT(self != NULL, return 0;);
+ if (self->io.suspended) {
+ IRDA_DEBUG(0, "%s(), device is suspended\n", __FUNCTION__);
+ return -EAGAIN;
+ }
+
if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name,
(void *) dev)) {
IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n",
@@ -1582,11 +1621,7 @@ static int smsc_ircc_net_open(struct net_device *dev)
return -EAGAIN;
}
- spin_lock_irqsave(&self->lock, flags);
- /*smsc_ircc_sir_start(self);*/
- self->io.speed = 0;
- smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
- spin_unlock_irqrestore(&self->lock, flags);
+ smsc_ircc_start_interrupts(self);
/* Give self a hardware name */
/* It would be cool to offer the chip revision here - Jean II */
@@ -1639,37 +1674,63 @@ static int smsc_ircc_net_close(struct net_device *dev)
irlap_close(self->irlap);
self->irlap = NULL;
- free_irq(self->io.irq, dev);
+ smsc_ircc_stop_interrupts(self);
+
+ /* if we are called from smsc_ircc_resume we don't have IRQ reserved */
+ if (!self->io.suspended)
+ free_irq(self->io.irq, dev);
+
disable_dma(self->io.dma);
free_dma(self->io.dma);
return 0;
}
-static int smsc_ircc_suspend(struct device *dev, pm_message_t state, u32 level)
+static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state)
{
- struct smsc_ircc_cb *self = dev_get_drvdata(dev);
+ struct smsc_ircc_cb *self = platform_get_drvdata(dev);
- IRDA_MESSAGE("%s, Suspending\n", driver_name);
+ if (!self->io.suspended) {
+ IRDA_DEBUG(1, "%s, Suspending\n", driver_name);
- if (level == SUSPEND_DISABLE && !self->io.suspended) {
- smsc_ircc_net_close(self->netdev);
+ rtnl_lock();
+ if (netif_running(self->netdev)) {
+ netif_device_detach(self->netdev);
+ smsc_ircc_stop_interrupts(self);
+ free_irq(self->io.irq, self->netdev);
+ disable_dma(self->io.dma);
+ }
self->io.suspended = 1;
+ rtnl_unlock();
}
return 0;
}
-static int smsc_ircc_resume(struct device *dev, u32 level)
+static int smsc_ircc_resume(struct platform_device *dev)
{
- struct smsc_ircc_cb *self = dev_get_drvdata(dev);
-
- if (level == RESUME_ENABLE && self->io.suspended) {
-
- smsc_ircc_net_open(self->netdev);
+ struct smsc_ircc_cb *self = platform_get_drvdata(dev);
+
+ if (self->io.suspended) {
+ IRDA_DEBUG(1, "%s, Waking up\n", driver_name);
+
+ rtnl_lock();
+ smsc_ircc_init_chip(self);
+ if (netif_running(self->netdev)) {
+ if (smsc_ircc_request_irq(self)) {
+ /*
+ * Don't fail resume process, just kill this
+ * network interface
+ */
+ unregister_netdevice(self->netdev);
+ } else {
+ enable_dma(self->io.dma);
+ smsc_ircc_start_interrupts(self);
+ netif_device_attach(self->netdev);
+ }
+ }
self->io.suspended = 0;
-
- IRDA_MESSAGE("%s, Waking up\n", driver_name);
+ rtnl_unlock();
}
return 0;
}
@@ -1682,9 +1743,6 @@ static int smsc_ircc_resume(struct device *dev, u32 level)
*/
static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
{
- int iobase;
- unsigned long flags;
-
IRDA_DEBUG(1, "%s\n", __FUNCTION__);
IRDA_ASSERT(self != NULL, return -1;);
@@ -1694,22 +1752,7 @@ static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
/* Remove netdevice */
unregister_netdev(self->netdev);
- /* Make sure the irq handler is not exectuting */
- spin_lock_irqsave(&self->lock, flags);
-
- /* Stop interrupts */
- iobase = self->io.fir_base;
- register_bank(iobase, 0);
- outb(0, iobase + IRCC_IER);
- outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
- outb(0x00, iobase + IRCC_MASTER);
-#if 0
- /* Reset to SIR mode */
- register_bank(iobase, 1);
- outb(IRCC_CFGA_IRDA_SIR_A|IRCC_CFGA_TX_POLARITY, iobase + IRCC_SCE_CFGA);
- outb(IRCC_CFGB_IR, iobase + IRCC_SCE_CFGB);
-#endif
- spin_unlock_irqrestore(&self->lock, flags);
+ smsc_ircc_stop_interrupts(self);
/* Release the PORTS that this driver is using */
IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__,
@@ -1746,7 +1789,7 @@ static void __exit smsc_ircc_cleanup(void)
smsc_ircc_close(dev_self[i]);
}
- driver_unregister(&smsc_ircc_driver);
+ platform_driver_unregister(&smsc_ircc_driver);
}
/*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-18 10:48:09 +0000