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platform/x86: fujitsu-laptop: use a sparse keymap for brightness key events 

Simplify brightness key event generation by using a sparse keymap.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
hifive-unleashed-5.1
Michał Kępień 2017-03-20 10:32:19 +01:00 committed by Darren Hart (VMware)
parent f8a399dcfa
commit f225267237
2 changed files with 16 additions and 16 deletions
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1
drivers/platform/x86/Kconfig
View File

@ -183,6 +183,7 @@ config FUJITSU_LAPTOP
depends on BACKLIGHT_CLASS_DEVICE
depends on ACPI_VIDEO || ACPI_VIDEO = n
depends on LEDS_CLASS || LEDS_CLASS=n
select INPUT_SPARSEKMAP
---help---
This is a driver for laptops built by Fujitsu:

31
drivers/platform/x86/fujitsu-laptop.c
View File

@ -57,6 +57,7 @@
#include <linux/backlight.h>
#include <linux/fb.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/kfifo.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@ -590,9 +591,16 @@ static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
/* ACPI device for LCD brightness control */
static const struct key_entry keymap_backlight[] = {
{ KE_KEY, true, { KEY_BRIGHTNESSUP } },
{ KE_KEY, false, { KEY_BRIGHTNESSDOWN } },
{ KE_END, 0 }
};
static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
{
struct fujitsu_bl *fujitsu_bl = acpi_driver_data(device);
int ret;
fujitsu_bl->input = devm_input_allocate_device(&device->dev);
if (!fujitsu_bl->input)
@ -605,10 +613,10 @@ static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
fujitsu_bl->input->phys = fujitsu_bl->phys;
fujitsu_bl->input->id.bustype = BUS_HOST;
fujitsu_bl->input->id.product = 0x06;
fujitsu_bl->input->evbit[0] = BIT(EV_KEY);
set_bit(KEY_BRIGHTNESSUP, fujitsu_bl->input->keybit);
set_bit(KEY_BRIGHTNESSDOWN, fujitsu_bl->input->keybit);
set_bit(KEY_UNKNOWN, fujitsu_bl->input->keybit);
ret = sparse_keymap_setup(fujitsu_bl->input, keymap_backlight, NULL);
if (ret)
return ret;
return input_register_device(fujitsu_bl->input);
}
@ -714,18 +722,14 @@ static int acpi_fujitsu_bl_remove(struct acpi_device *device)
static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
{
struct input_dev *input;
int oldb, newb, keycode;
int oldb, newb;
input = fujitsu_bl->input;
if (event != ACPI_FUJITSU_NOTIFY_CODE1) {
keycode = KEY_UNKNOWN;
vdbg_printk(FUJLAPTOP_DBG_WARN,
"unsupported event [0x%x]\n", event);
input_report_key(input, keycode, 1);
input_sync(input);
input_report_key(input, keycode, 0);
input_sync(input);
sparse_keymap_report_event(input, -1, 1, true);
return;
}
@ -747,12 +751,7 @@ static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
set_lcd_level(newb);
}
keycode = oldb < newb ? KEY_BRIGHTNESSUP : KEY_BRIGHTNESSDOWN;
input_report_key(input, keycode, 1);
input_sync(input);
input_report_key(input, keycode, 0);
input_sync(input);
sparse_keymap_report_event(input, oldb < newb, 1, true);
}
/* ACPI device for hotkey handling */