* 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/platform_device.h>
+#include <linux/of_device.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");
-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 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 int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+static u32 bbc_count_to_reg(struct bbc_beep_info *info, unsigned int count)
{
+ u32 val, clock_freq = info->clock_freq;
+ int i;
+
+ if (!count)
+ return 0;
+
+ 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 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;
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 (beep_iobase & 0x2UL)
- outb(!!count, beep_iobase);
- else
- outl(!!count, beep_iobase);
+ if (count) {
+ 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 {
+ outb(0x00, info->regs + 0);
+ }
- 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)
+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;
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;
}
-#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;
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->dev.parent = dev;
- input_dev->evbit[0] = BIT(EV_SND);
- input_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
+ input_dev->evbit[0] = BIT_MASK(EV_SND);
+ input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
- input_dev->event = beep_event;
+ input_dev->event = state->event;
error = input_register_device(input_dev);
if (error) {
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 sparcspkr_shutdown(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);
return 0;
}
-static void sparcspkr_shutdown(struct platform_device *dev)
+static int __devinit bbc_beep_probe(struct of_device *op, const struct of_device_id *match)
{
+ 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;
+
+ dev_set_drvdata(&op->dev, state);
+
+ err = sparcspkr_probe(&op->dev);
+ if (err)
+ goto out_clear_drvdata;
+
+ return 0;
+
+out_clear_drvdata:
+ dev_set_drvdata(&op->dev, NULL);
+ of_iounmap(&op->resource[0], info->regs, 6);
+
+out_free:
+ kfree(state);
+out_err:
+ return err;
+}
+
+static int bbc_remove(struct of_device *op)
+{
+ struct sparcspkr_state *state = dev_get_drvdata(&op->dev);
+ struct input_dev *input_dev = state->input_dev;
+ struct bbc_beep_info *info = &state->u.bbc;
+
/* 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);
+
+ of_iounmap(&op->resource[0], info->regs, 6);
+
+ dev_set_drvdata(&op->dev, NULL);
+ kfree(state);
+
+ return 0;
}
-static struct platform_driver sparcspkr_platform_driver = {
- .driver = {
- .name = "sparcspkr",
- .owner = THIS_MODULE,
+static struct of_device_id bbc_beep_match[] = {
+ {
+ .name = "beep",
+ .compatible = "SUNW,bbc-beep",
},
- .probe = sparcspkr_probe,
- .remove = __devexit_p(sparcspkr_remove),
- .shutdown = sparcspkr_shutdown,
+ {},
};
-static struct platform_device *sparcspkr_platform_device;
+static struct of_platform_driver bbc_beep_driver = {
+ .name = "bbcbeep",
+ .match_table = bbc_beep_match,
+ .probe = bbc_beep_probe,
+ .remove = __devexit_p(bbc_remove),
+ .shutdown = sparcspkr_shutdown,
+};
-static int __init sparcspkr_drv_init(void)
+static int __devinit grover_beep_probe(struct of_device *op, const struct of_device_id *match)
{
- int error;
+ struct sparcspkr_state *state;
+ struct grover_beep_info *info;
+ int err = -ENOMEM;
- error = platform_driver_register(&sparcspkr_platform_driver);
- if (error)
- return error;
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ goto out_err;
- sparcspkr_platform_device = platform_device_alloc("sparcspkr", -1);
- if (!sparcspkr_platform_device) {
- error = -ENOMEM;
- goto err_unregister_driver;
- }
+ 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;
- error = platform_device_add(sparcspkr_platform_device);
- if (error)
- goto err_free_device;
+ info->enable_reg = of_ioremap(&op->resource[3], 0, 1, "grover beep enable");
+ if (!info->enable_reg)
+ goto out_unmap_freq_regs;
+
+ dev_set_drvdata(&op->dev, state);
+
+ err = sparcspkr_probe(&op->dev);
+ if (err)
+ goto out_clear_drvdata;
return 0;
- err_free_device:
- platform_device_put(sparcspkr_platform_device);
- err_unregister_driver:
- platform_driver_unregister(&sparcspkr_platform_driver);
+out_clear_drvdata:
+ dev_set_drvdata(&op->dev, NULL);
+ of_iounmap(&op->resource[3], info->enable_reg, 1);
- return error;
+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 of_device *op)
+{
+ struct sparcspkr_state *state = dev_get_drvdata(&op->dev);
+ 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);
+
+ dev_set_drvdata(&op->dev, NULL);
+ kfree(state);
+
+ return 0;
+}
+
+static struct of_device_id grover_beep_match[] = {
+ {
+ .name = "beep",
+ .compatible = "SUNW,smbus-beep",
+ },
+ {},
+};
+
+static struct of_platform_driver grover_beep_driver = {
+ .name = "groverbeep",
+ .match_table = grover_beep_match,
+ .probe = grover_beep_probe,
+ .remove = __devexit_p(grover_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_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_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(&bbc_beep_driver,
+ &of_platform_bus_type);
+
+ if (!err) {
+ err = of_register_driver(&grover_beep_driver,
+ &of_platform_bus_type);
+ if (err)
+ of_unregister_driver(&bbc_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(&bbc_beep_driver);
+ of_unregister_driver(&grover_beep_driver);
}
module_init(sparcspkr_init);
projects / linux-2.6-omap-h63xx.git / blobdiff