[SPARC64]: Add of_device layer and make ebus/isa use it.

Sparcspkr and power drivers are converted, to make sure it works.
Eventually the SBUS device layer will use this as a sub-class.

I really cannot cut loose on that bit until sparc32 is given the
same infrastructure.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 123 insertions, 95 deletions

diff --git a/drivers/input/misc/sparcspkr.c b/drivers/input/misc/sparcspkr.c
index ed95dc9420dd..42c11fbf3c79 100644
--- a/drivers/input/misc/sparcspkr.c
+++ b/drivers/input/misc/sparcspkr.c
@@ -2,7 +2,7 @@
  *  Driver for PC-speaker like devices found on various Sparc systems.
  *
  *  Copyright (c) 2002 Vojtech Pavlik
- *  Copyright (c) 2002 David S. Miller (davem@redhat.com)
+ *  Copyright (c) 2002, 2006 David S. Miller (davem@davemloft.net)
  */
 #include <linux/config.h>
 #include <linux/kernel.h>
@@ -13,21 +13,23 @@
 
 #include <asm/io.h>
 #include <asm/ebus.h>
-#ifdef CONFIG_SPARC64
 #include <asm/isa.h>
-#endif
 
-MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
+MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 MODULE_DESCRIPTION("Sparc Speaker beeper driver");
 MODULE_LICENSE("GPL");
 
-const char *beep_name;
-static unsigned long beep_iobase;
-static int (*beep_event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
-static DEFINE_SPINLOCK(beep_lock);
+struct sparcspkr_state {
+        const char              *name;
+        unsigned long           iobase;
+        int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
+        spinlock_t              lock;
+        struct input_dev        *input_dev;
+};
 
 static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
+        struct sparcspkr_state *state = dev_get_drvdata(dev->cdev.dev);
         unsigned int count = 0;
         unsigned long flags;
 
@@ -43,24 +45,24 @@ static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned in
         if (value > 20 && value < 32767)
                 count = 1193182 / value;
 
-        spin_lock_irqsave(&beep_lock, flags);
+        spin_lock_irqsave(&state->lock, flags);
 
         /* EBUS speaker only has on/off state, the frequency does not
          * appear to be programmable.
          */
-        if (beep_iobase & 0x2UL)
-                outb(!!count, beep_iobase);
+        if (state->iobase & 0x2UL)
+                outb(!!count, state->iobase);
         else
-                outl(!!count, beep_iobase);
+                outl(!!count, state->iobase);
 
-        spin_unlock_irqrestore(&beep_lock, flags);
+        spin_unlock_irqrestore(&state->lock, flags);
 
         return 0;
 }
 
-#ifdef CONFIG_SPARC64
 static int isa_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
+        struct sparcspkr_state *state = dev_get_drvdata(dev->cdev.dev);
         unsigned int count = 0;
         unsigned long flags;
 
@@ -76,29 +78,29 @@ static int isa_spkr_event(struct input_dev *dev, unsigned int type, unsigned int
         if (value > 20 && value < 32767)
                 count = 1193182 / value;
 
-        spin_lock_irqsave(&beep_lock, flags);
+        spin_lock_irqsave(&state->lock, flags);
 
         if (count) {
                 /* enable counter 2 */
-                outb(inb(beep_iobase + 0x61) | 3, beep_iobase + 0x61);
+                outb(inb(state->iobase + 0x61) | 3, state->iobase + 0x61);
                 /* set command for counter 2, 2 byte write */
-                outb(0xB6, beep_iobase + 0x43);
+                outb(0xB6, state->iobase + 0x43);
                 /* select desired HZ */
-                outb(count & 0xff, beep_iobase + 0x42);
-                outb((count >> 8) & 0xff, beep_iobase + 0x42);
+                outb(count & 0xff, state->iobase + 0x42);
+                outb((count >> 8) & 0xff, state->iobase + 0x42);
         } else {
                 /* disable counter 2 */
-                outb(inb_p(beep_iobase + 0x61) & 0xFC, beep_iobase + 0x61);
+                outb(inb_p(state->iobase + 0x61) & 0xFC, state->iobase + 0x61);
         }
 
-        spin_unlock_irqrestore(&beep_lock, flags);
+        spin_unlock_irqrestore(&state->lock, flags);
 
         return 0;
 }
-#endif
 
-static int __devinit sparcspkr_probe(struct platform_device *dev)
+static int __devinit sparcspkr_probe(struct device *dev)
 {
+        struct sparcspkr_state *state = dev_get_drvdata(dev);
         struct input_dev *input_dev;
         int error;
 
@@ -106,18 +108,18 @@ static int __devinit sparcspkr_probe(struct platform_device *dev)
         if (!input_dev)
                 return -ENOMEM;
 
-        input_dev->name = beep_name;
+        input_dev->name = state->name;
         input_dev->phys = "sparc/input0";
         input_dev->id.bustype = BUS_ISA;
         input_dev->id.vendor = 0x001f;
         input_dev->id.product = 0x0001;
         input_dev->id.version = 0x0100;
-        input_dev->cdev.dev = &dev->dev;
+        input_dev->cdev.dev = dev;
 
         input_dev->evbit[0] = BIT(EV_SND);
         input_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
 
-        input_dev->event = beep_event;
+        input_dev->event = state->event;
 
         error = input_register_device(input_dev);
         if (error) {
@@ -125,111 +127,137 @@ static int __devinit sparcspkr_probe(struct platform_device *dev)
                 return error;
         }
 
-        platform_set_drvdata(dev, input_dev);
+        state->input_dev = input_dev;
 
         return 0;
 }
 
-static int __devexit sparcspkr_remove(struct platform_device *dev)
+static int __devexit sparcspkr_remove(struct of_device *dev)
 {
-        struct input_dev *input_dev = platform_get_drvdata(dev);
+        struct sparcspkr_state *state = dev_get_drvdata(&dev->dev);
+        struct input_dev *input_dev = state->input_dev;
 
-        input_unregister_device(input_dev);
-        platform_set_drvdata(dev, NULL);
         /* turn off the speaker */
-        beep_event(NULL, EV_SND, SND_BELL, 0);
+        state->event(input_dev, EV_SND, SND_BELL, 0);
+
+        input_unregister_device(input_dev);
+
+        dev_set_drvdata(&dev->dev, NULL);
+        kfree(state);
 
         return 0;
 }
 
-static void sparcspkr_shutdown(struct platform_device *dev)
+static int sparcspkr_shutdown(struct of_device *dev)
 {
+        struct sparcspkr_state *state = dev_get_drvdata(&dev->dev);
+        struct input_dev *input_dev = state->input_dev;
+
         /* turn off the speaker */
-        beep_event(NULL, EV_SND, SND_BELL, 0);
+        state->event(input_dev, EV_SND, SND_BELL, 0);
+
+        return 0;
+}
+
+static int __devinit ebus_beep_probe(struct of_device *dev, const struct of_device_id *match)
+{
+        struct linux_ebus_device *edev = to_ebus_device(&dev->dev);
+        struct sparcspkr_state *state;
+        int err;
+
+        state = kzalloc(sizeof(*state), GFP_KERNEL);
+        if (!state)
+                return -ENOMEM;
+
+        state->name = "Sparc EBUS Speaker";
+        state->iobase = edev->resource[0].start;
+        state->event = ebus_spkr_event;
+        spin_lock_init(&state->lock);
+
+        dev_set_drvdata(&dev->dev, state);
+
+        err = sparcspkr_probe(&dev->dev);
+        if (err) {
+                dev_set_drvdata(&dev->dev, NULL);
+                kfree(state);
+        }
+
+        return 0;
 }
 
-static struct platform_driver sparcspkr_platform_driver = {
-        .driver         = {
-                .name   = "sparcspkr",
-                .owner  = THIS_MODULE,
+static struct of_device_id ebus_beep_match[] = {
+        {
+                .name = "beep",
         },
-        .probe          = sparcspkr_probe,
-        .remove         = __devexit_p(sparcspkr_remove),
-        .shutdown       = sparcspkr_shutdown,
+        {},
 };
 
-static struct platform_device *sparcspkr_platform_device;
+static struct of_platform_driver ebus_beep_driver = {
+        .name           = "beep",
+        .match_table    = ebus_beep_match,
+        .probe          = ebus_beep_probe,
+        .remove         = sparcspkr_remove,
+        .shutdown       = sparcspkr_shutdown,
+};
 
-static int __init sparcspkr_drv_init(void)
+static int __devinit isa_beep_probe(struct of_device *dev, const struct of_device_id *match)
 {
-        int error;
+        struct sparc_isa_device *idev = to_isa_device(&dev->dev);
+        struct sparcspkr_state *state;
+        int err;
 
-        error = platform_driver_register(&sparcspkr_platform_driver);
-        if (error)
-                return error;
+        state = kzalloc(sizeof(*state), GFP_KERNEL);
+        if (!state)
+                return -ENOMEM;
 
-        sparcspkr_platform_device = platform_device_alloc("sparcspkr", -1);
-        if (!sparcspkr_platform_device) {
-                error = -ENOMEM;
-                goto err_unregister_driver;
-        }
+        state->name = "Sparc ISA Speaker";
+        state->iobase = idev->resource.start;
+        state->event = isa_spkr_event;
+        spin_lock_init(&state->lock);
+
+        dev_set_drvdata(&dev->dev, state);
 
-        error = platform_device_add(sparcspkr_platform_device);
-        if (error)
-                goto err_free_device;
+        err = sparcspkr_probe(&dev->dev);
+        if (err) {
+                dev_set_drvdata(&dev->dev, NULL);
+                kfree(state);
+        }
 
         return 0;
+}
 
- err_free_device:
-        platform_device_put(sparcspkr_platform_device);
- err_unregister_driver:
-        platform_driver_unregister(&sparcspkr_platform_driver);
+static struct of_device_id isa_beep_match[] = {
+        {
+                .name = "dma",
+        },
+        {},
+};
 
-        return error;
-}
+static struct of_platform_driver isa_beep_driver = {
+        .name           = "beep",
+        .match_table    = isa_beep_match,
+        .probe          = isa_beep_probe,
+        .remove         = sparcspkr_remove,
+        .shutdown       = sparcspkr_shutdown,
+};
 
 static int __init sparcspkr_init(void)
 {
-        struct linux_ebus *ebus;
-        struct linux_ebus_device *edev;
-#ifdef CONFIG_SPARC64
-        struct sparc_isa_bridge *isa_br;
-        struct sparc_isa_device *isa_dev;
-#endif
-
-        for_each_ebus(ebus) {
-                for_each_ebusdev(edev, ebus) {
-                        if (!strcmp(edev->prom_node->name, "beep")) {
-                                beep_name = "Sparc EBUS Speaker";
-                                beep_event = ebus_spkr_event;
-                                beep_iobase = edev->resource[0].start;
-                                return sparcspkr_drv_init();
-                        }
-                }
-        }
-#ifdef CONFIG_SPARC64
-        for_each_isa(isa_br) {
-                for_each_isadev(isa_dev, isa_br) {
-                        /* A hack, the beep device's base lives in
-                         * the DMA isa node.
-                         */
-                        if (!strcmp(isa_dev->prom_node->name, "dma")) {
-                                beep_name = "Sparc ISA Speaker";
-                                beep_event = isa_spkr_event,
-                                beep_iobase = isa_dev->resource.start;
-                                return sparcspkr_drv_init();
-                        }
-                }
+        int err = of_register_driver(&ebus_beep_driver, &ebus_bus_type);
+
+        if (!err) {
+                err = of_register_driver(&isa_beep_driver, &isa_bus_type);
+                if (err)
+                        of_unregister_driver(&ebus_beep_driver);
         }
-#endif
 
-        return -ENODEV;
+        return err;
 }
 
 static void __exit sparcspkr_exit(void)
 {
-        platform_device_unregister(sparcspkr_platform_device);
-        platform_driver_unregister(&sparcspkr_platform_driver);
+        of_unregister_driver(&ebus_beep_driver);
+        of_unregister_driver(&isa_beep_driver);
 }
 
 module_init(sparcspkr_init);