Skip to content

Commit

Permalink
[PATCH] smsc-ircc2: add to sysfs as platform device, new PM
Browse files Browse the repository at this point in the history 
IRDA: smsc-ircc2 - add sysfs support (platform device and driver) and
      switch power management to the new scheme.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Jean Tourrilhes <jt@hpl.hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
  • Loading branch information
Dmitry Torokhov authored and Linus Torvalds committed Sep 7, 2005
1 parent 80a9058 commit 6bb3b2c
Showing 1 changed file with 65 additions and 56 deletions.
121 changes: 65 additions & 56 deletions drivers/net/irda/smsc-ircc2.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,6 @@ MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>");
MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver");
MODULE_LICENSE("GPL");


static int ircc_dma = 255;
module_param(ircc_dma, int, 0);
MODULE_PARM_DESC(ircc_dma, "DMA channel");
Expand Down Expand Up @@ -144,17 +143,20 @@ struct smsc_ircc_cb {
int tx_len; /* Number of frames in tx_buff */

int transceiver;
struct pm_dev *pmdev;
struct platform_device *pldev;
};

/* Constants */

static const char *driver_name = "smsc-ircc2";
#define SMSC_IRCC2_DRIVER_NAME "smsc-ircc2"

#define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED 9600
#define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER 1
#define SMSC_IRCC2_C_NET_TIMEOUT 0
#define SMSC_IRCC2_C_SIR_STOP 0

static const char *driver_name = SMSC_IRCC2_DRIVER_NAME;

/* Prototypes */

static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq);
Expand Down Expand Up @@ -187,7 +189,6 @@ static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cm
static void smsc_ircc_timeout(struct net_device *dev);
#endif
static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev);
static int smsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data);
static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self);
static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self);
static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed);
Expand All @@ -212,10 +213,15 @@ static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base);

/* Power Management */

static void smsc_ircc_suspend(struct smsc_ircc_cb *self);
static void smsc_ircc_wakeup(struct smsc_ircc_cb *self);
static int smsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data);
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 struct device_driver smsc_ircc_driver = {
.name = SMSC_IRCC2_DRIVER_NAME,
.bus = &platform_bus_type,
.suspend = smsc_ircc_suspend,
.resume = smsc_ircc_resume,
};

/* Transceivers for SMSC-ircc */

Expand Down Expand Up @@ -335,34 +341,42 @@ static inline void register_bank(int iobase, int bank)
*/
static int __init smsc_ircc_init(void)
{
int ret = -ENODEV;
int ret;

IRDA_DEBUG(1, "%s\n", __FUNCTION__);

ret = driver_register(&smsc_ircc_driver);
if (ret) {
IRDA_ERROR("%s, Can't register driver!\n", driver_name);
return ret;
}

dev_count = 0;

if (ircc_fir > 0 && ircc_sir > 0) {
IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir);
IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir);

if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq) == 0)
return 0;
if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq))
ret = -ENODEV;
} else {

return -ENODEV;
}
/* try user provided configuration register base address */
if (ircc_cfg > 0) {
IRDA_MESSAGE(" Overriding configuration address "
"0x%04x\n", ircc_cfg);
if (!smsc_superio_fdc(ircc_cfg))
ret = 0;
if (!smsc_superio_lpc(ircc_cfg))
ret = 0;
}

/* try user provided configuration register base address */
if (ircc_cfg > 0) {
IRDA_MESSAGE(" Overriding configuration address 0x%04x\n",
ircc_cfg);
if (!smsc_superio_fdc(ircc_cfg))
ret = 0;
if (!smsc_superio_lpc(ircc_cfg))
if (smsc_ircc_look_for_chips() > 0)
ret = 0;
}

if (smsc_ircc_look_for_chips() > 0)
ret = 0;
if (ret)
driver_unregister(&smsc_ircc_driver);

return ret;
}
Expand Down Expand Up @@ -420,7 +434,7 @@ static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u
dev->irq = self->io.irq = irq;

/* Need to store self somewhere */
dev_self[dev_count++] = self;
dev_self[dev_count] = self;
spin_lock_init(&self->lock);

self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE;
Expand Down Expand Up @@ -469,14 +483,22 @@ static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u
goto err_out4;
}

self->pmdev = pm_register(PM_SYS_DEV, PM_SYS_IRDA, smsc_ircc_pmproc);
if (self->pmdev)
self->pmdev->data = self;
self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME,
dev_count, NULL, 0);
if (IS_ERR(self->pldev)) {
err = PTR_ERR(self->pldev);
goto err_out5;
}
dev_set_drvdata(&self->pldev->dev, self);

IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
dev_count++;

return 0;

err_out5:
unregister_netdev(self->netdev);

err_out4:
dma_free_coherent(NULL, self->tx_buff.truesize,
self->tx_buff.head, self->tx_buff_dma);
Expand All @@ -485,7 +507,7 @@ static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u
self->rx_buff.head, self->rx_buff_dma);
err_out2:
free_netdev(self->netdev);
dev_self[--dev_count] = NULL;
dev_self[dev_count] = NULL;
err_out1:
release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
Expand Down Expand Up @@ -1626,44 +1648,31 @@ static int smsc_ircc_net_close(struct net_device *dev)
return 0;
}


static void smsc_ircc_suspend(struct smsc_ircc_cb *self)
static int smsc_ircc_suspend(struct device *dev, pm_message_t state, u32 level)
{
struct smsc_ircc_cb *self = dev_get_drvdata(dev);

IRDA_MESSAGE("%s, Suspending\n", driver_name);

if (!self->io.suspended) {
if (level == SUSPEND_DISABLE && !self->io.suspended) {
smsc_ircc_net_close(self->netdev);
self->io.suspended = 1;
}

return 0;
}

static void smsc_ircc_wakeup(struct smsc_ircc_cb *self)
static int smsc_ircc_resume(struct device *dev, u32 level)
{
if (!self->io.suspended)
return;
struct smsc_ircc_cb *self = dev_get_drvdata(dev);

/* The code was doing a "cli()" here, but this can't be right.
* If you need protection, do it in net_open with a spinlock
* or give a good reason. - Jean II */
if (level == RESUME_ENABLE && self->io.suspended) {

smsc_ircc_net_open(self->netdev);
smsc_ircc_net_open(self->netdev);
self->io.suspended = 0;

IRDA_MESSAGE("%s, Waking up\n", driver_name);
}

static int smsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data)
{
struct smsc_ircc_cb *self = (struct smsc_ircc_cb*) dev->data;
if (self) {
switch (rqst) {
case PM_SUSPEND:
smsc_ircc_suspend(self);
break;
case PM_RESUME:
smsc_ircc_wakeup(self);
break;
}
}
IRDA_MESSAGE("%s, Waking up\n", driver_name);
}
return 0;
}

Expand All @@ -1682,10 +1691,7 @@ static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)

IRDA_ASSERT(self != NULL, return -1;);

iobase = self->io.fir_base;

if (self->pmdev)
pm_unregister(self->pmdev);
platform_device_unregister(self->pldev);

/* Remove netdevice */
unregister_netdev(self->netdev);
Expand All @@ -1694,6 +1700,7 @@ static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
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);
Expand Down Expand Up @@ -1740,6 +1747,8 @@ static void __exit smsc_ircc_cleanup(void)
if (dev_self[i])
smsc_ircc_close(dev_self[i]);
}

driver_unregister(&smsc_ircc_driver);
}

/*
Expand Down

0 comments on commit 6bb3b2c

Please sign in to comment.