1 files changed, 189 insertions, 0 deletions

diff --git a/drivers/input/misc/sparcspkr.c b/drivers/input/misc/sparcspkr.c
new file mode 100644
index 000000000000..cdc3fb3d5f46
--- /dev/null
+++ b/drivers/input/misc/sparcspkr.c
@@ -0,0 +1,189 @@
+/*
+ *  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)
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.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_DESCRIPTION("PC Speaker beeper driver");
+MODULE_LICENSE("GPL");
+
+static unsigned long beep_iobase;
+
+static char *sparcspkr_isa_name = "Sparc ISA Speaker";
+static char *sparcspkr_ebus_name = "Sparc EBUS Speaker";
+static char *sparcspkr_phys = "sparc/input0";
+static struct input_dev sparcspkr_dev;
+
+DEFINE_SPINLOCK(beep_lock);
+
+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 = sparcspkr_phys;
+        sparcspkr_dev.id.bustype = BUS_ISA;
+        sparcspkr_dev.id.vendor = 0x001f;
+        sparcspkr_dev.id.product = 0x0001;
+        sparcspkr_dev.id.version = 0x0100;
+}
+
+static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+        unsigned int count = 0;
+        unsigned long flags;
+
+        if (type != EV_SND)
+                return -1;
+
+        switch (code) {
+                case SND_BELL: if (value) value = 1000;
+                case SND_TONE: break;
+                default: return -1;
+        }
+
+        if (value > 20 && value < 32767)
+                count = 1193182 / value;
+
+        spin_lock_irqsave(&beep_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);
+        } else {
+                if (beep_iobase & 0x2UL)
+                        outb(0, beep_iobase);
+                else
+                        outl(0, beep_iobase);
+        }
+
+        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;
+
+        init_sparcspkr_struct();
+
+        sparcspkr_dev.name = sparcspkr_ebus_name;
+        sparcspkr_dev.event = ebus_spkr_event;
+
+        input_register_device(&sparcspkr_dev);
+
+        printk(KERN_INFO "input: %s\n", sparcspkr_ebus_name);
+        return 0;
+}
+
+#ifdef CONFIG_SPARC64
+static int isa_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+        unsigned int count = 0;
+        unsigned long flags;
+
+        if (type != EV_SND)
+                return -1;
+
+        switch (code) {
+                case SND_BELL: if (value) value = 1000;
+                case SND_TONE: break;
+                default: return -1;
+        }
+
+        if (value > 20 && value < 32767)
+                count = 1193182 / value;
+
+        spin_lock_irqsave(&beep_lock, flags);
+
+        if (count) {
+                /* enable counter 2 */
+                outb(inb(beep_iobase + 0x61) | 3, beep_iobase + 0x61);
+                /* set command for counter 2, 2 byte write */
+                outb(0xB6, beep_iobase + 0x43);
+                /* select desired HZ */
+                outb(count & 0xff, beep_iobase + 0x42);
+                outb((count >> 8) & 0xff, beep_iobase + 0x42);
+        } else {
+                /* disable counter 2 */
+                outb(inb_p(beep_iobase + 0x61) & 0xFC, beep_iobase + 0x61);
+        }
+
+        spin_unlock_irqrestore(&beep_lock, flags);
+
+        return 0;
+}
+
+static int __init init_isa_beep(struct sparc_isa_device *isa_dev)
+{
+        beep_iobase = isa_dev->resource.start;
+
+        init_sparcspkr_struct();
+
+        sparcspkr_dev.name = sparcspkr_isa_name;
+        sparcspkr_dev.event = isa_spkr_event;
+        sparcspkr_dev.id.bustype = BUS_ISA;
+
+        input_register_device(&sparcspkr_dev);
+
+        printk(KERN_INFO "input: %s\n", sparcspkr_isa_name);
+        return 0;
+}
+#endif
+
+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);
+                }
+        }
+#endif
+
+        return -ENODEV;
+}
+
+static void __exit sparcspkr_exit(void)
+{
+        input_unregister_device(&sparcspkr_dev);
+}
+
+module_init(sparcspkr_init);
+module_exit(sparcspkr_exit);