1 files changed, 273 insertions, 93 deletions

diff --git a/drivers/input/misc/sparcspkr.c b/drivers/input/misc/sparcspkr.c
index 29d97b12be7..65fd3150919 100644
--- a/drivers/input/misc/sparcspkr.c
+++ b/drivers/input/misc/sparcspkr.c
@@ -2,43 +2,70 @@
  *  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, 2008 David S. Miller (davem@davemloft.net)
  */
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/input.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
 
 #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");
 
-static unsigned long beep_iobase;
-static struct input_dev *sparcspkr_dev;
+struct grover_beep_info {
+	void __iomem	*freq_regs;
+	void __iomem	*enable_reg;
+};
+
+struct bbc_beep_info {
+	u32		clock_freq;
+	void __iomem	*regs;
+};
+
+struct sparcspkr_state {
+	const char		*name;
+	int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);
+	spinlock_t		lock;
+	struct input_dev	*input_dev;
+	union {
+		struct grover_beep_info grover;
+		struct bbc_beep_info bbc;
+	} u;
+};
+
+static u32 bbc_count_to_reg(struct bbc_beep_info *info, unsigned int count)
+{
+	u32 val, clock_freq = info->clock_freq;
+	int i;
 
-DEFINE_SPINLOCK(beep_lock);
+	if (!count)
+		return 0;
 
-static void __init init_sparcspkr_struct(void)
-{
-	sparcspkr_dev->evbit[0] = BIT(EV_SND);
-	sparcspkr_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
-
-	sparcspkr_dev->phys = "sparc/input0";
-	sparcspkr_dev->id.bustype = BUS_ISA;
-	sparcspkr_dev->id.vendor = 0x001f;
-	sparcspkr_dev->id.product = 0x0001;
-	sparcspkr_dev->id.version = 0x0100;
+	if (count <= clock_freq >> 20)
+		return 1 << 18;
+
+	if (count >= clock_freq >> 12)
+		return 1 << 10;
+
+	val = 1 << 18;
+	for (i = 19; i >= 11; i--) {
+		val >>= 1;
+		if (count <= clock_freq >> i)
+			break;
+	}
+
+	return val;
 }
 
-static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+static int bbc_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
+	struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent);
+	struct bbc_beep_info *info = &state->u.bbc;
 	unsigned int count = 0;
 	unsigned long flags;
 
@@ -54,47 +81,29 @@ 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);
+	count = bbc_count_to_reg(info, count);
+
+	spin_lock_irqsave(&state->lock, flags);
 
-	/* EBUS speaker only has on/off state, the frequency does not
-	 * appear to be programmable.
-	 */
 	if (count) {
-		if (beep_iobase & 0x2UL)
-			outb(1, beep_iobase);
-		else
-			outl(1, beep_iobase);
+		outb(0x01,                 info->regs + 0);
+		outb(0x00,                 info->regs + 2);
+		outb((count >> 16) & 0xff, info->regs + 3);
+		outb((count >>  8) & 0xff, info->regs + 4);
+		outb(0x00,                 info->regs + 5);
 	} else {
-		if (beep_iobase & 0x2UL)
-			outb(0, beep_iobase);
-		else
-			outl(0, beep_iobase);
+		outb(0x00,                 info->regs + 0);
 	}
 
-	spin_unlock_irqrestore(&beep_lock, flags);
-
-	return 0;
-}
-
-static int __init init_ebus_beep(struct linux_ebus_device *edev)
-{
-	beep_iobase = edev->resource[0].start;
-
-	sparcspkr_dev = input_allocate_device();
-	if (!sparcspkr_dev)
-		return -ENOMEM;
-
-	sparcspkr_dev->name = "Sparc EBUS Speaker";
-	sparcspkr_dev->event = ebus_spkr_event;
-
-	input_register_device(sparcspkr_dev);
+	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)
+static int grover_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
+	struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent);
+	struct grover_beep_info *info = &state->u.grover;
 	unsigned int count = 0;
 	unsigned long flags;
 
@@ -110,78 +119,249 @@ 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(info->enable_reg) | 3, info->enable_reg);
 		/* set command for counter 2, 2 byte write */
-		outb(0xB6, beep_iobase + 0x43);
+		outb(0xB6, info->freq_regs + 1);
 		/* select desired HZ */
-		outb(count & 0xff, beep_iobase + 0x42);
-		outb((count >> 8) & 0xff, beep_iobase + 0x42);
+		outb(count & 0xff, info->freq_regs + 0);
+		outb((count >> 8) & 0xff, info->freq_regs + 0);
 	} else {
 		/* disable counter 2 */
-		outb(inb_p(beep_iobase + 0x61) & 0xFC, beep_iobase + 0x61);
+		outb(inb_p(info->enable_reg) & 0xFC, info->enable_reg);
 	}
 
-	spin_unlock_irqrestore(&beep_lock, flags);
+	spin_unlock_irqrestore(&state->lock, flags);
 
 	return 0;
 }
 
-static int __init init_isa_beep(struct sparc_isa_device *isa_dev)
+static int sparcspkr_probe(struct device *dev)
 {
-	beep_iobase = isa_dev->resource.start;
+	struct sparcspkr_state *state = dev_get_drvdata(dev);
+	struct input_dev *input_dev;
+	int error;
 
-	sparcspkr_dev = input_allocate_device();
-	if (!sparcspkr_dev)
+	input_dev = input_allocate_device();
+	if (!input_dev)
 		return -ENOMEM;
 
-	init_sparcspkr_struct();
+	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->dev.parent = dev;
+
+	input_dev->evbit[0] = BIT_MASK(EV_SND);
+	input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+
+	input_dev->event = state->event;
 
-	sparcspkr_dev->name = "Sparc ISA Speaker";
-	sparcspkr_dev->event = isa_spkr_event;
+	error = input_register_device(input_dev);
+	if (error) {
+		input_free_device(input_dev);
+		return error;
+	}
 
-	input_register_device(sparcspkr_dev);
+	state->input_dev = input_dev;
 
 	return 0;
 }
-#endif
+
+static void sparcspkr_shutdown(struct platform_device *dev)
+{
+	struct sparcspkr_state *state = platform_get_drvdata(dev);
+	struct input_dev *input_dev = state->input_dev;
+
+	/* turn off the speaker */
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+}
+
+static int bbc_beep_probe(struct platform_device *op)
+{
+	struct sparcspkr_state *state;
+	struct bbc_beep_info *info;
+	struct device_node *dp;
+	int err = -ENOMEM;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		goto out_err;
+
+	state->name = "Sparc BBC Speaker";
+	state->event = bbc_spkr_event;
+	spin_lock_init(&state->lock);
+
+	dp = of_find_node_by_path("/");
+	err = -ENODEV;
+	if (!dp)
+		goto out_free;
+
+	info = &state->u.bbc;
+	info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0);
+	if (!info->clock_freq)
+		goto out_free;
+
+	info->regs = of_ioremap(&op->resource[0], 0, 6, "bbc beep");
+	if (!info->regs)
+		goto out_free;
+
+	platform_set_drvdata(op, state);
+
+	err = sparcspkr_probe(&op->dev);
+	if (err)
+		goto out_clear_drvdata;
+
+	return 0;
+
+out_clear_drvdata:
+	of_iounmap(&op->resource[0], info->regs, 6);
+
+out_free:
+	kfree(state);
+out_err:
+	return err;
+}
+
+static int bbc_remove(struct platform_device *op)
+{
+	struct sparcspkr_state *state = platform_get_drvdata(op);
+	struct input_dev *input_dev = state->input_dev;
+	struct bbc_beep_info *info = &state->u.bbc;
+
+	/* turn off the speaker */
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+
+	input_unregister_device(input_dev);
+
+	of_iounmap(&op->resource[0], info->regs, 6);
+
+	kfree(state);
+
+	return 0;
+}
+
+static const struct of_device_id bbc_beep_match[] = {
+	{
+		.name = "beep",
+		.compatible = "SUNW,bbc-beep",
+	},
+	{},
+};
+
+static struct platform_driver bbc_beep_driver = {
+	.driver = {
+		.name = "bbcbeep",
+		.owner = THIS_MODULE,
+		.of_match_table = bbc_beep_match,
+	},
+	.probe		= bbc_beep_probe,
+	.remove		= bbc_remove,
+	.shutdown	= sparcspkr_shutdown,
+};
+
+static int grover_beep_probe(struct platform_device *op)
+{
+	struct sparcspkr_state *state;
+	struct grover_beep_info *info;
+	int err = -ENOMEM;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		goto out_err;
+
+	state->name = "Sparc Grover Speaker";
+	state->event = grover_spkr_event;
+	spin_lock_init(&state->lock);
+
+	info = &state->u.grover;
+	info->freq_regs = of_ioremap(&op->resource[2], 0, 2, "grover beep freq");
+	if (!info->freq_regs)
+		goto out_free;
+
+	info->enable_reg = of_ioremap(&op->resource[3], 0, 1, "grover beep enable");
+	if (!info->enable_reg)
+		goto out_unmap_freq_regs;
+
+	platform_set_drvdata(op, state);
+
+	err = sparcspkr_probe(&op->dev);
+	if (err)
+		goto out_clear_drvdata;
+
+	return 0;
+
+out_clear_drvdata:
+	of_iounmap(&op->resource[3], info->enable_reg, 1);
+
+out_unmap_freq_regs:
+	of_iounmap(&op->resource[2], info->freq_regs, 2);
+out_free:
+	kfree(state);
+out_err:
+	return err;
+}
+
+static int grover_remove(struct platform_device *op)
+{
+	struct sparcspkr_state *state = platform_get_drvdata(op);
+	struct grover_beep_info *info = &state->u.grover;
+	struct input_dev *input_dev = state->input_dev;
+
+	/* turn off the speaker */
+	state->event(input_dev, EV_SND, SND_BELL, 0);
+
+	input_unregister_device(input_dev);
+
+	of_iounmap(&op->resource[3], info->enable_reg, 1);
+	of_iounmap(&op->resource[2], info->freq_regs, 2);
+
+	kfree(state);
+
+	return 0;
+}
+
+static const struct of_device_id grover_beep_match[] = {
+	{
+		.name = "beep",
+		.compatible = "SUNW,smbus-beep",
+	},
+	{},
+};
+
+static struct platform_driver grover_beep_driver = {
+	.driver = {
+		.name = "groverbeep",
+		.owner = THIS_MODULE,
+		.of_match_table = grover_beep_match,
+	},
+	.probe		= grover_beep_probe,
+	.remove		= grover_remove,
+	.shutdown	= sparcspkr_shutdown,
+};
 
 static int __init sparcspkr_init(void)
 {
-	struct linux_ebus *ebus;
-	struct linux_ebus_device *edev = NULL;
-#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_name, "beep"))
-				return init_ebus_beep(edev);
-		}
-	}
-#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_name, "dma"))
-				return init_isa_beep(isa_dev);
-		}
+	int err = platform_driver_register(&bbc_beep_driver);
+
+	if (!err) {
+		err = platform_driver_register(&grover_beep_driver);
+		if (err)
+			platform_driver_unregister(&bbc_beep_driver);
 	}
-#endif
 
-	return -ENODEV;
+	return err;
 }
 
 static void __exit sparcspkr_exit(void)
 {
-	input_unregister_device(sparcspkr_dev);
+	platform_driver_unregister(&bbc_beep_driver);
+	platform_driver_unregister(&grover_beep_driver);
 }
 
 module_init(sparcspkr_init);