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Input: sgi_btns - add support for SGI Indy volume buttons 

Also rename sgio2_btns to sgi_btns since the driver is not only
for SGI O2 anymore.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
hifive-unleashed-5.1
Thomas Bogendoerfer 2008-07-19 00:14:26 -04:00 committed by Dmitry Torokhov
parent 305e342bba
commit 48ad88b1f2
3 changed files with 54 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/input/misc/Kconfig
View File

@ -189,15 +189,15 @@ config INPUT_UINPUT
To compile this driver as a module, choose M here: the
module will be called uinput.
config INPUT_SGIO2_BTNS
tristate "SGI O2 volume button interface"
depends on SGI_IP32
config INPUT_SGI_BTNS
tristate "SGI Indy/O2 volume button interface"
depends on SGI_IP22 || SGI_IP32
select INPUT_POLLDEV
help
Say Y here if you want to support SGI O2 volume button interface.
Say Y here if you want to support SGI Indy/O2 volume button interface.
To compile this driver as a module, choose M here: the
module will be called sgio_btns.
module will be called sgi_btns.
config HP_SDC_RTC
tristate "HP SDC Real Time Clock"

2
drivers/input/misc/Makefile
View File

@ -19,4 +19,4 @@ obj-$(CONFIG_INPUT_YEALINK) += yealink.o
obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
obj-$(CONFIG_INPUT_UINPUT) += uinput.o
obj-$(CONFIG_INPUT_APANEL) += apanel.o
obj-$(CONFIG_INPUT_SGIO2_BTNS) += sgio2_btns.o
obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o

74
drivers/input/misc/sgio2_btns.c → drivers/input/misc/sgi_btns.c
View File

@ -1,5 +1,5 @@
/*
* SGI O2 Volume Button interface driver
* SGI Volume Button interface driver
*
* Copyright (C) 2008 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
*
@ -23,35 +23,57 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#ifdef CONFIG_SGI_IP22
#include <asm/sgi/ioc.h>
static inline u8 button_status(void)
{
u8 status;
status = readb(&sgioc->panel) ^ 0xa0;
return ((status & 0x80) >> 6) | ((status & 0x20) >> 5);
}
#endif
#ifdef CONFIG_SGI_IP32
#include <asm/ip32/mace.h>
static inline u8 button_status(void)
{
u64 status;
status = readq(&mace->perif.audio.control);
writeq(status & ~(3U << 23), &mace->perif.audio.control);
return (status >> 23) & 3;
}
#endif
#define BUTTONS_POLL_INTERVAL 30 /* msec */
#define BUTTONS_COUNT_THRESHOLD 3
static const unsigned short sgio2_map[] = {
KEY_VOLUMEUP,
KEY_VOLUMEDOWN
static const unsigned short sgi_map[] = {
KEY_VOLUMEDOWN,
KEY_VOLUMEUP
};
struct buttons_dev {
struct input_polled_dev *poll_dev;
unsigned short keymap[ARRAY_SIZE(sgio2_map)];
int count[ARRAY_SIZE(sgio2_map)];
void __iomem *reg;
unsigned short keymap[ARRAY_SIZE(sgi_map)];
int count[ARRAY_SIZE(sgi_map)];
};
static void handle_buttons(struct input_polled_dev *dev)
{
struct buttons_dev *bdev = dev->private;
struct input_dev *input = dev->input;
u64 status;
u8 status;
int i;
status = (readq(&mace->perif.audio.control) >> 23) & 3;
status = button_status();
for (i = 0; i < ARRAY_SIZE(bdev->keymap); i++) {
if (status & (1U << i)) {
writeq(status & ~(1U << i), &mace->perif.audio.control);
if (++bdev->count[i] == BUTTONS_COUNT_THRESHOLD) {
input_event(input, EV_MSC, MSC_SCAN, i);
input_report_key(input, bdev->keymap[i], 1);
@ -68,7 +90,7 @@ static void handle_buttons(struct input_polled_dev *dev)
}
}
static int __devinit sgio2_buttons_probe(struct platform_device *pdev)
static int __devinit sgi_buttons_probe(struct platform_device *pdev)
{
struct buttons_dev *bdev;
struct input_polled_dev *poll_dev;
@ -82,15 +104,15 @@ static int __devinit sgio2_buttons_probe(struct platform_device *pdev)
goto err_free_mem;
}
memcpy(bdev->keymap, sgio2_map, sizeof(bdev->keymap));
memcpy(bdev->keymap, sgi_map, sizeof(bdev->keymap));
poll_dev->private = bdev;
poll_dev->poll = handle_buttons;
poll_dev->poll_interval = BUTTONS_POLL_INTERVAL;
input = poll_dev->input;
input->name = "SGI O2 buttons";
input->phys = "sgio2/input0";
input->name = "SGI buttons";
input->phys = "sgi/input0";
input->id.bustype = BUS_HOST;
input->dev.parent = &pdev->dev;
@ -100,7 +122,7 @@ static int __devinit sgio2_buttons_probe(struct platform_device *pdev)
input_set_capability(input, EV_MSC, MSC_SCAN);
__set_bit(EV_KEY, input->evbit);
for (i = 0; i < ARRAY_SIZE(sgio2_map); i++)
for (i = 0; i < ARRAY_SIZE(sgi_map); i++)
__set_bit(bdev->keymap[i], input->keybit);
__clear_bit(KEY_RESERVED, input->keybit);
@ -120,7 +142,7 @@ static int __devinit sgio2_buttons_probe(struct platform_device *pdev)
return error;
}
static int __devexit sgio2_buttons_remove(struct platform_device *pdev)
static int __devexit sgi_buttons_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct buttons_dev *bdev = dev_get_drvdata(dev);
@ -133,24 +155,24 @@ static int __devexit sgio2_buttons_remove(struct platform_device *pdev)
return 0;
}
static struct platform_driver sgio2_buttons_driver = {
.probe = sgio2_buttons_probe,
.remove = __devexit_p(sgio2_buttons_remove),
static struct platform_driver sgi_buttons_driver = {
.probe = sgi_buttons_probe,
.remove = __devexit_p(sgi_buttons_remove),
.driver = {
.name = "sgio2btns",
.name = "sgibtns",
.owner = THIS_MODULE,
},
};
static int __init sgio2_buttons_init(void)
static int __init sgi_buttons_init(void)
{
return platform_driver_register(&sgio2_buttons_driver);
return platform_driver_register(&sgi_buttons_driver);
}
static void __exit sgio2_buttons_exit(void)
static void __exit sgi_buttons_exit(void)
{
platform_driver_unregister(&sgio2_buttons_driver);
platform_driver_unregister(&sgi_buttons_driver);
}
module_init(sgio2_buttons_init);
module_exit(sgio2_buttons_exit);
module_init(sgi_buttons_init);
module_exit(sgi_buttons_exit);