[mirror_ubuntu-bionic-kernel.git] / drivers / input / misc / sparcspkr.c

/*
 *  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);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Driver for PC-speaker like devices found on various Sparc systems.
	3	*
	4	* Copyright (c) 2002 Vojtech Pavlik
	5	* Copyright (c) 2002 David S. Miller (davem@redhat.com)
	6	*/
	7	#include <linux/config.h>
	8	#include <linux/kernel.h>
	9	#include <linux/module.h>
	10	#include <linux/init.h>
	11	#include <linux/input.h>
	12
	13	#include <asm/io.h>
	14	#include <asm/ebus.h>
	15	#ifdef CONFIG_SPARC64
	16	#include <asm/isa.h>
	17	#endif
	18
	19	MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
	20	MODULE_DESCRIPTION("PC Speaker beeper driver");
	21	MODULE_LICENSE("GPL");
	22
	23	static unsigned long beep_iobase;
	24
	25	static char *sparcspkr_isa_name = "Sparc ISA Speaker";
	26	static char *sparcspkr_ebus_name = "Sparc EBUS Speaker";
	27	static char *sparcspkr_phys = "sparc/input0";
	28	static struct input_dev sparcspkr_dev;
	29
	30	DEFINE_SPINLOCK(beep_lock);
	31
	32	static void __init init_sparcspkr_struct(void)
	33	{
	34	sparcspkr_dev.evbit[0] = BIT(EV_SND);
	35	sparcspkr_dev.sndbit[0] = BIT(SND_BELL) \| BIT(SND_TONE);
	36
	37	sparcspkr_dev.phys = sparcspkr_phys;
	38	sparcspkr_dev.id.bustype = BUS_ISA;
	39	sparcspkr_dev.id.vendor = 0x001f;
	40	sparcspkr_dev.id.product = 0x0001;
	41	sparcspkr_dev.id.version = 0x0100;
	42	}
	43
	44	static int ebus_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
	45	{
	46	unsigned int count = 0;
	47	unsigned long flags;
	48
	49	if (type != EV_SND)
	50	return -1;
	51
	52	switch (code) {
	53	case SND_BELL: if (value) value = 1000;
	54	case SND_TONE: break;
	55	default: return -1;
	56	}
	57
	58	if (value > 20 && value < 32767)
	59	count = 1193182 / value;
	60
	61	spin_lock_irqsave(&beep_lock, flags);
	62
	63	/* EBUS speaker only has on/off state, the frequency does not
	64	* appear to be programmable.
65	*/
66	if (count) {
67	if (beep_iobase & 0x2UL)
68	outb(1, beep_iobase);
69	else
70	outl(1, beep_iobase);
71	} else {
72	if (beep_iobase & 0x2UL)
73	outb(0, beep_iobase);
74	else
75	outl(0, beep_iobase);
76	}
77
78	spin_unlock_irqrestore(&beep_lock, flags);
79
80	return 0;
81	}
82
83	static int __init init_ebus_beep(struct linux_ebus_device *edev)
84	{
85	beep_iobase = edev->resource[0].start;
86
87	init_sparcspkr_struct();
88
89	sparcspkr_dev.name = sparcspkr_ebus_name;
90	sparcspkr_dev.event = ebus_spkr_event;
91
92	input_register_device(&sparcspkr_dev);
93
94	printk(KERN_INFO "input: %s\n", sparcspkr_ebus_name);
95	return 0;
96	}
97
98	#ifdef CONFIG_SPARC64
99	static int isa_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
100	{
101	unsigned int count = 0;
102	unsigned long flags;
103
104	if (type != EV_SND)
105	return -1;
106
107	switch (code) {
108	case SND_BELL: if (value) value = 1000;
109	case SND_TONE: break;
110	default: return -1;
111	}
112
113	if (value > 20 && value < 32767)
114	count = 1193182 / value;
115
116	spin_lock_irqsave(&beep_lock, flags);
117
118	if (count) {
119	/* enable counter 2 */
120	outb(inb(beep_iobase + 0x61) \| 3, beep_iobase + 0x61);
121	/* set command for counter 2, 2 byte write */
122	outb(0xB6, beep_iobase + 0x43);
123	/* select desired HZ */
124	outb(count & 0xff, beep_iobase + 0x42);
125	outb((count >> 8) & 0xff, beep_iobase + 0x42);
126	} else {
127	/* disable counter 2 */
128	outb(inb_p(beep_iobase + 0x61) & 0xFC, beep_iobase + 0x61);
129	}
130
131	spin_unlock_irqrestore(&beep_lock, flags);
132
133	return 0;
134	}
135
136	static int __init init_isa_beep(struct sparc_isa_device *isa_dev)
137	{
138	beep_iobase = isa_dev->resource.start;
139
140	init_sparcspkr_struct();
141
142	sparcspkr_dev.name = sparcspkr_isa_name;
143	sparcspkr_dev.event = isa_spkr_event;
144	sparcspkr_dev.id.bustype = BUS_ISA;
145
146	input_register_device(&sparcspkr_dev);
147
148	printk(KERN_INFO "input: %s\n", sparcspkr_isa_name);
149	return 0;
150	}
151	#endif
152
153	static int __init sparcspkr_init(void)
154	{
155	struct linux_ebus *ebus;
156	struct linux_ebus_device *edev = NULL;
157	#ifdef CONFIG_SPARC64
158	struct sparc_isa_bridge *isa_br;
159	struct sparc_isa_device *isa_dev;
160	#endif
161
162	for_each_ebus(ebus) {
163	for_each_ebusdev(edev, ebus) {
164	if (!strcmp(edev->prom_name, "beep"))
165	return init_ebus_beep(edev);
166	}
167	}
168	#ifdef CONFIG_SPARC64
169	for_each_isa(isa_br) {
170	for_each_isadev(isa_dev, isa_br) {
171	/* A hack, the beep device's base lives in
172	* the DMA isa node.
173	*/
174	if (!strcmp(isa_dev->prom_name, "dma"))
175	return init_isa_beep(isa_dev);
176	}
177	}
178	#endif
179
180	return -ENODEV;
181	}
182
183	static void __exit sparcspkr_exit(void)
184	{
185	input_unregister_device(&sparcspkr_dev);
186	}
187
188	module_init(sparcspkr_init);
189	module_exit(sparcspkr_exit);