Merge ../linux-2.6

1 files changed, 251 insertions, 69 deletions

diff --git a/drivers/net/irda/nsc-ircc.c b/drivers/net/irda/nsc-ircc.c
index ee717d0e939..83141a3ff54 100644
--- a/drivers/net/irda/nsc-ircc.c
+++ b/drivers/net/irda/nsc-ircc.c
@@ -12,6 +12,7 @@
  *     Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no>
  *     Copyright (c) 1998 Lichen Wang, <lwang@actisys.com>
  *     Copyright (c) 1998 Actisys Corp., www.actisys.com
+ *     Copyright (c) 2000-2004 Jean Tourrilhes <jt@hpl.hp.com>
  *     All Rights Reserved
  *      
  *     This program is free software; you can redistribute it and/or 
@@ -53,14 +54,13 @@
 #include <linux/init.h>
 #include <linux/rtnetlink.h>
 #include <linux/dma-mapping.h>
+#include <linux/pnp.h>
+#include <linux/platform_device.h>
 
 #include <asm/io.h>
 #include <asm/dma.h>
 #include <asm/byteorder.h>
 
-#include <linux/pm.h>
-#include <linux/pm_legacy.h>
-
 #include <net/irda/wrapper.h>
 #include <net/irda/irda.h>
 #include <net/irda/irda_device.h>
@@ -72,14 +72,27 @@
 
 static char *driver_name = "nsc-ircc";
 
+/* Power Management */
+#define NSC_IRCC_DRIVER_NAME                  "nsc-ircc"
+static int nsc_ircc_suspend(struct platform_device *dev, pm_message_t state);
+static int nsc_ircc_resume(struct platform_device *dev);
+
+static struct platform_driver nsc_ircc_driver = {
+	.suspend	= nsc_ircc_suspend,
+	.resume		= nsc_ircc_resume,
+	.driver		= {
+		.name	= NSC_IRCC_DRIVER_NAME,
+	},
+};
+
 /* Module parameters */
 static int qos_mtt_bits = 0x07;  /* 1 ms or more */
 static int dongle_id;
 
 /* Use BIOS settions by default, but user may supply module parameters */
-static unsigned int io[]  = { ~0, ~0, ~0, ~0 };
-static unsigned int irq[] = { 0, 0, 0, 0, 0 };
-static unsigned int dma[] = { 0, 0, 0, 0, 0 };
+static unsigned int io[]  = { ~0, ~0, ~0, ~0, ~0 };
+static unsigned int irq[] = {  0,  0,  0,  0,  0 };
+static unsigned int dma[] = {  0,  0,  0,  0,  0 };
 
 static int nsc_ircc_probe_108(nsc_chip_t *chip, chipio_t *info);
 static int nsc_ircc_probe_338(nsc_chip_t *chip, chipio_t *info);
@@ -87,6 +100,7 @@ static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info);
 static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info);
 static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info);
 static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info);
+static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id);
 
 /* These are the known NSC chips */
 static nsc_chip_t chips[] = {
@@ -101,11 +115,12 @@ static nsc_chip_t chips[] = {
 	/* Contributed by Jan Frey - IBM A30/A31 */
 	{ "PC8739x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xea, 0xff, 
 	  nsc_ircc_probe_39x, nsc_ircc_init_39x },
+	{ "IBM", { 0x2e, 0x4e, 0x0 }, 0x20, 0xf4, 0xff,
+ 	  nsc_ircc_probe_39x, nsc_ircc_init_39x },
 	{ NULL }
 };
 
-/* Max 4 instances for now */
-static struct nsc_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
+static struct nsc_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL, NULL };
 
 static char *dongle_types[] = {
 	"Differential serial interface",
@@ -126,8 +141,24 @@ static char *dongle_types[] = {
 	"No dongle connected",
 };
 
+/* PNP probing */
+static chipio_t pnp_info;
+static const struct pnp_device_id nsc_ircc_pnp_table[] = {
+	{ .id = "NSC6001", .driver_data = 0 },
+	{ .id = "IBM0071", .driver_data = 0 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(pnp, nsc_ircc_pnp_table);
+
+static struct pnp_driver nsc_ircc_pnp_driver = {
+	.name = "nsc-ircc",
+	.id_table = nsc_ircc_pnp_table,
+	.probe = nsc_ircc_pnp_probe,
+};
+
 /* Some prototypes */
-static int  nsc_ircc_open(int i, chipio_t *info);
+static int  nsc_ircc_open(chipio_t *info);
 static int  nsc_ircc_close(struct nsc_ircc_cb *self);
 static int  nsc_ircc_setup(chipio_t *info);
 static void nsc_ircc_pio_receive(struct nsc_ircc_cb *self);
@@ -146,7 +177,10 @@ static int  nsc_ircc_net_open(struct net_device *dev);
 static int  nsc_ircc_net_close(struct net_device *dev);
 static int  nsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 static struct net_device_stats *nsc_ircc_net_get_stats(struct net_device *dev);
-static int nsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data);
+
+/* Globals */
+static int pnp_registered;
+static int pnp_succeeded;
 
 /*
  * Function nsc_ircc_init ()
@@ -158,28 +192,36 @@ static int __init nsc_ircc_init(void)
 {
 	chipio_t info;
 	nsc_chip_t *chip;
-	int ret = -ENODEV;
+	int ret;
 	int cfg_base;
 	int cfg, id;
 	int reg;
 	int i = 0;
 
+	ret = platform_driver_register(&nsc_ircc_driver);
+        if (ret) {
+                IRDA_ERROR("%s, Can't register driver!\n", driver_name);
+                return ret;
+        }
+
+ 	/* Register with PnP subsystem to detect disable ports */
+	ret = pnp_register_driver(&nsc_ircc_pnp_driver);
+
+ 	if (ret >= 0)
+ 		pnp_registered = 1;
+
+	ret = -ENODEV;
+
 	/* Probe for all the NSC chipsets we know about */
-	for (chip=chips; chip->name ; chip++) {
+	for (chip = chips; chip->name ; chip++) {
 		IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __FUNCTION__,
 			   chip->name);
 		
 		/* Try all config registers for this chip */
-		for (cfg=0; cfg<3; cfg++) {
+		for (cfg = 0; cfg < ARRAY_SIZE(chip->cfg); cfg++) {
 			cfg_base = chip->cfg[cfg];
 			if (!cfg_base)
 				continue;
-			
-			memset(&info, 0, sizeof(chipio_t));
-			info.cfg_base = cfg_base;
-			info.fir_base = io[i];
-			info.dma = dma[i];
-			info.irq = irq[i];
 
 			/* Read index register */
 			reg = inb(cfg_base);
@@ -194,24 +236,65 @@ static int __init nsc_ircc_init(void)
 			if ((id & chip->cid_mask) == chip->cid_value) {
 				IRDA_DEBUG(2, "%s() Found %s chip, revision=%d\n",
 					   __FUNCTION__, chip->name, id & ~chip->cid_mask);
-				/* 
-				 * If the user supplies the base address, then
-				 * we init the chip, if not we probe the values
-				 * set by the BIOS
-				 */				
-				if (io[i] < 0x2000) {
-					chip->init(chip, &info);
-				} else
-					chip->probe(chip, &info);
 
-				if (nsc_ircc_open(i, &info) == 0)
-					ret = 0;
+				/*
+				 * If we found a correct PnP setting,
+				 * we first try it.
+				 */
+				if (pnp_succeeded) {
+					memset(&info, 0, sizeof(chipio_t));
+					info.cfg_base = cfg_base;
+					info.fir_base = pnp_info.fir_base;
+					info.dma = pnp_info.dma;
+					info.irq = pnp_info.irq;
+
+					if (info.fir_base < 0x2000) {
+						IRDA_MESSAGE("%s, chip->init\n", driver_name);
+						chip->init(chip, &info);
+					} else
+						chip->probe(chip, &info);
+
+					if (nsc_ircc_open(&info) >= 0)
+						ret = 0;
+				}
+
+				/*
+				 * Opening based on PnP values failed.
+				 * Let's fallback to user values, or probe
+				 * the chip.
+				 */
+				if (ret) {
+					IRDA_DEBUG(2, "%s, PnP init failed\n", driver_name);
+					memset(&info, 0, sizeof(chipio_t));
+					info.cfg_base = cfg_base;
+					info.fir_base = io[i];
+					info.dma = dma[i];
+					info.irq = irq[i];
+
+					/*
+					 * If the user supplies the base address, then
+					 * we init the chip, if not we probe the values
+					 * set by the BIOS
+					 */
+					if (io[i] < 0x2000) {
+						chip->init(chip, &info);
+					} else
+						chip->probe(chip, &info);
+
+					if (nsc_ircc_open(&info) >= 0)
+						ret = 0;
+				}
 				i++;
 			} else {
 				IRDA_DEBUG(2, "%s(), Wrong chip id=0x%02x\n", __FUNCTION__, id);
 			}
 		} 
-		
+	}
+
+	if (ret) {
+		platform_driver_unregister(&nsc_ircc_driver);
+		pnp_unregister_driver(&nsc_ircc_pnp_driver);
+		pnp_registered = 0;
 	}
 
 	return ret;
@@ -227,12 +310,17 @@ static void __exit nsc_ircc_cleanup(void)
 {
 	int i;
 
-	pm_unregister_all(nsc_ircc_pmproc);
-
-	for (i=0; i < 4; i++) {
+	for (i = 0; i < ARRAY_SIZE(dev_self); i++) {
 		if (dev_self[i])
 			nsc_ircc_close(dev_self[i]);
 	}
+
+	platform_driver_unregister(&nsc_ircc_driver);
+
+	if (pnp_registered)
+ 		pnp_unregister_driver(&nsc_ircc_pnp_driver);
+
+	pnp_registered = 0;
 }
 
 /*
@@ -241,16 +329,26 @@ static void __exit nsc_ircc_cleanup(void)
  *    Open driver instance
  *
  */
-static int __init nsc_ircc_open(int i, chipio_t *info)
+static int __init nsc_ircc_open(chipio_t *info)
 {
 	struct net_device *dev;
 	struct nsc_ircc_cb *self;
-        struct pm_dev *pmdev;
 	void *ret;
-	int err;
+	int err, chip_index;
 
 	IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
 
+
+ 	for (chip_index = 0; chip_index < ARRAY_SIZE(dev_self); chip_index++) {
+		if (!dev_self[chip_index])
+			break;
+	}
+
+	if (chip_index == ARRAY_SIZE(dev_self)) {
+		IRDA_ERROR("%s(), maximum number of supported chips reached!\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+
 	IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name,
 		     info->cfg_base);
 
@@ -271,8 +369,8 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
 	spin_lock_init(&self->lock);
    
 	/* Need to store self somewhere */
-	dev_self[i] = self;
-	self->index = i;
+	dev_self[chip_index] = self;
+	self->index = chip_index;
 
 	/* Initialize IO */
 	self->io.cfg_base  = info->cfg_base;
@@ -351,7 +449,7 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
 
 	/* Check if user has supplied a valid dongle id or not */
 	if ((dongle_id <= 0) ||
-	    (dongle_id >= (sizeof(dongle_types) / sizeof(dongle_types[0]))) ) {
+	    (dongle_id >= ARRAY_SIZE(dongle_types))) {
 		dongle_id = nsc_ircc_read_dongle_id(self->io.fir_base);
 		
 		IRDA_MESSAGE("%s, Found dongle: %s\n", driver_name,
@@ -364,11 +462,18 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
 	self->io.dongle_id = dongle_id;
 	nsc_ircc_init_dongle_interface(self->io.fir_base, dongle_id);
 
-        pmdev = pm_register(PM_SYS_DEV, PM_SYS_IRDA, nsc_ircc_pmproc);
-        if (pmdev)
-                pmdev->data = self;
+ 	self->pldev = platform_device_register_simple(NSC_IRCC_DRIVER_NAME,
+ 						      self->index, NULL, 0);
+ 	if (IS_ERR(self->pldev)) {
+ 		err = PTR_ERR(self->pldev);
+ 		goto out5;
+ 	}
+ 	platform_set_drvdata(self->pldev, self);
 
-	return 0;
+	return chip_index;
+
+ out5:
+ 	unregister_netdev(dev);
  out4:
 	dma_free_coherent(NULL, self->tx_buff.truesize,
 			  self->tx_buff.head, self->tx_buff_dma);
@@ -379,7 +484,7 @@ static int __init nsc_ircc_open(int i, chipio_t *info)
 	release_region(self->io.fir_base, self->io.fir_ext);
  out1:
 	free_netdev(dev);
-	dev_self[i] = NULL;
+	dev_self[chip_index] = NULL;
 	return err;
 }
 
@@ -399,6 +504,8 @@ static int __exit nsc_ircc_close(struct nsc_ircc_cb *self)
 
         iobase = self->io.fir_base;
 
+	platform_device_unregister(self->pldev);
+
 	/* Remove netdevice */
 	unregister_netdev(self->netdev);
 
@@ -806,6 +913,43 @@ static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info)
 	return 0;
 }
 
+/* PNP probing */
+static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id)
+{
+	memset(&pnp_info, 0, sizeof(chipio_t));
+	pnp_info.irq = -1;
+	pnp_info.dma = -1;
+	pnp_succeeded = 1;
+
+	/* There don't seem to be any way to get the cfg_base.
+	 * On my box, cfg_base is in the PnP descriptor of the
+	 * motherboard. Oh well... Jean II */
+
+	if (pnp_port_valid(dev, 0) &&
+		!(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED))
+		pnp_info.fir_base = pnp_port_start(dev, 0);
+
+	if (pnp_irq_valid(dev, 0) &&
+		!(pnp_irq_flags(dev, 0) & IORESOURCE_DISABLED))
+		pnp_info.irq = pnp_irq(dev, 0);
+
+	if (pnp_dma_valid(dev, 0) &&
+		!(pnp_dma_flags(dev, 0) & IORESOURCE_DISABLED))
+		pnp_info.dma = pnp_dma(dev, 0);
+
+	IRDA_DEBUG(0, "%s() : From PnP, found firbase 0x%03X ; irq %d ; dma %d.\n",
+		   __FUNCTION__, pnp_info.fir_base, pnp_info.irq, pnp_info.dma);
+
+	if((pnp_info.fir_base == 0) ||
+	   (pnp_info.irq == -1) || (pnp_info.dma == -1)) {
+		/* Returning an error will disable the device. Yuck ! */
+		//return -EINVAL;
+		pnp_succeeded = 0;
+	}
+
+	return 0;
+}
+
 /*
  * Function nsc_ircc_setup (info)
  *
@@ -2161,45 +2305,83 @@ static struct net_device_stats *nsc_ircc_net_get_stats(struct net_device *dev)
 	return &self->stats;
 }
 
-static void nsc_ircc_suspend(struct nsc_ircc_cb *self)
+static int nsc_ircc_suspend(struct platform_device *dev, pm_message_t state)
 {
-	IRDA_MESSAGE("%s, Suspending\n", driver_name);
+     	struct nsc_ircc_cb *self = platform_get_drvdata(dev);
+ 	int bank;
+	unsigned long flags;
+ 	int iobase = self->io.fir_base;
 
 	if (self->io.suspended)
-		return;
+		return 0;
 
-	nsc_ircc_net_close(self->netdev);
+	IRDA_DEBUG(1, "%s, Suspending\n", driver_name);
 
+	rtnl_lock();
+	if (netif_running(self->netdev)) {
+		netif_device_detach(self->netdev);
+		spin_lock_irqsave(&self->lock, flags);
+		/* Save current bank */
+		bank = inb(iobase+BSR);
+
+		/* Disable interrupts */
+		switch_bank(iobase, BANK0);
+		outb(0, iobase+IER);
+
+		/* Restore bank register */
+		outb(bank, iobase+BSR);
+
+		spin_unlock_irqrestore(&self->lock, flags);
+		free_irq(self->io.irq, self->netdev);
+		disable_dma(self->io.dma);
+	}
 	self->io.suspended = 1;
+	rtnl_unlock();
+
+	return 0;
 }
 
-static void nsc_ircc_wakeup(struct nsc_ircc_cb *self)
+static int nsc_ircc_resume(struct platform_device *dev)
 {
+ 	struct nsc_ircc_cb *self = platform_get_drvdata(dev);
+ 	unsigned long flags;
+
 	if (!self->io.suspended)
-		return;
+		return 0;
 
+	IRDA_DEBUG(1, "%s, Waking up\n", driver_name);
+
+	rtnl_lock();
 	nsc_ircc_setup(&self->io);
-	nsc_ircc_net_open(self->netdev);
-	
-	IRDA_MESSAGE("%s, Waking up\n", driver_name);
+	nsc_ircc_init_dongle_interface(self->io.fir_base, self->io.dongle_id);
 
+	if (netif_running(self->netdev)) {
+		if (request_irq(self->io.irq, nsc_ircc_interrupt, 0,
+				self->netdev->name, self->netdev)) {
+ 		    	IRDA_WARNING("%s, unable to allocate irq=%d\n",
+				     driver_name, self->io.irq);
+
+			/*
+			 * Don't fail resume process, just kill this
+			 * network interface
+			 */
+			unregister_netdevice(self->netdev);
+		} else {
+			spin_lock_irqsave(&self->lock, flags);
+			nsc_ircc_change_speed(self, self->io.speed);
+			spin_unlock_irqrestore(&self->lock, flags);
+			netif_device_attach(self->netdev);
+		}
+
+	} else {
+		spin_lock_irqsave(&self->lock, flags);
+		nsc_ircc_change_speed(self, 9600);
+		spin_unlock_irqrestore(&self->lock, flags);
+	}
 	self->io.suspended = 0;
-}
+	rtnl_unlock();
 
-static int nsc_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data)
-{
-        struct nsc_ircc_cb *self = (struct nsc_ircc_cb*) dev->data;
-        if (self) {
-                switch (rqst) {
-                case PM_SUSPEND:
-                        nsc_ircc_suspend(self);
-                        break;
-                case PM_RESUME:
-                        nsc_ircc_wakeup(self);
-                        break;
-                }
-        }
-	return 0;
+ 	return 0;
 }
 
 MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>");