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Input: wistron_btns - switch to using polled mode of input devices 

We have added polled mode to the normal input devices with the intent of
retiring input_polled_dev. This converts wistron_btns driver to use
the polling mode of standard input devices and removes dependency on
INPUT_POLLDEV.

Link: https://lore.kernel.org/r/20191017204217.106453-11-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2019-10-29 17:03:45 -07:00
parent 071ec845c8
commit 4a767ec368
2 changed files with 28 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/input/misc/Kconfig
View File

@ -346,7 +346,6 @@ config INPUT_CPCAP_PWRBUTTON
config INPUT_WISTRON_BTNS
tristate "x86 Wistron laptop button interface"
depends on X86_32
select INPUT_POLLDEV
select INPUT_SPARSEKMAP
select NEW_LEDS
select LEDS_CLASS

53
drivers/input/misc/wistron_btns.c
View File

@ -8,7 +8,7 @@
#include <linux/io.h>
#include <linux/dmi.h>
#include <linux/init.h>
#include <linux/input-polldev.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
@ -1030,7 +1030,7 @@ static int __init select_keymap(void)
/* Input layer interface */
static struct input_polled_dev *wistron_idev;
static struct input_dev *wistron_idev;
static unsigned long jiffies_last_press;
static bool wifi_enabled;
static bool bluetooth_enabled;
@ -1114,7 +1114,7 @@ static inline void wistron_led_resume(void)
static void handle_key(u8 code)
{
const struct key_entry *key =
sparse_keymap_entry_from_scancode(wistron_idev->input, code);
sparse_keymap_entry_from_scancode(wistron_idev, code);
if (key) {
switch (key->type) {
@ -1133,14 +1133,14 @@ static void handle_key(u8 code)
break;
default:
sparse_keymap_report_entry(wistron_idev->input,
key, 1, true);
sparse_keymap_report_entry(wistron_idev, key, 1, true);
break;
}
jiffies_last_press = jiffies;
} else
} else {
printk(KERN_NOTICE
"wistron_btns: Unknown key code %02X\n", code);
}
}
static void poll_bios(bool discard)
@ -1158,21 +1158,23 @@ static void poll_bios(bool discard)
}
}
static void wistron_flush(struct input_polled_dev *dev)
static int wistron_flush(struct input_dev *dev)
{
/* Flush stale event queue */
poll_bios(true);
return 0;
}
static void wistron_poll(struct input_polled_dev *dev)
static void wistron_poll(struct input_dev *dev)
{
poll_bios(false);
/* Increase poll frequency if user is currently pressing keys (< 2s ago) */
if (time_before(jiffies, jiffies_last_press + 2 * HZ))
dev->poll_interval = POLL_INTERVAL_BURST;
input_set_poll_interval(dev, POLL_INTERVAL_BURST);
else
dev->poll_interval = POLL_INTERVAL_DEFAULT;
input_set_poll_interval(dev, POLL_INTERVAL_DEFAULT);
}
static int wistron_setup_keymap(struct input_dev *dev,
@ -1208,35 +1210,37 @@ static int wistron_setup_keymap(struct input_dev *dev,
static int setup_input_dev(void)
{
struct input_dev *input_dev;
int error;
wistron_idev = input_allocate_polled_device();
wistron_idev = input_allocate_device();
if (!wistron_idev)
return -ENOMEM;
wistron_idev->name = "Wistron laptop buttons";
wistron_idev->phys = "wistron/input0";
wistron_idev->id.bustype = BUS_HOST;
wistron_idev->dev.parent = &wistron_device->dev;
wistron_idev->open = wistron_flush;
wistron_idev->poll = wistron_poll;
wistron_idev->poll_interval = POLL_INTERVAL_DEFAULT;
input_dev = wistron_idev->input;
input_dev->name = "Wistron laptop buttons";
input_dev->phys = "wistron/input0";
input_dev->id.bustype = BUS_HOST;
input_dev->dev.parent = &wistron_device->dev;
error = sparse_keymap_setup(input_dev, keymap, wistron_setup_keymap);
error = sparse_keymap_setup(wistron_idev, keymap, wistron_setup_keymap);
if (error)
goto err_free_dev;
error = input_register_polled_device(wistron_idev);
error = input_setup_polling(wistron_idev, wistron_poll);
if (error)
goto err_free_dev;
input_set_poll_interval(wistron_idev, POLL_INTERVAL_DEFAULT);
error = input_register_device(wistron_idev);
if (error)
goto err_free_dev;
return 0;
err_free_dev:
input_free_polled_device(wistron_idev);
input_free_device(wistron_idev);
return error;
}
@ -1285,8 +1289,7 @@ static int wistron_probe(struct platform_device *dev)
static int wistron_remove(struct platform_device *dev)
{
wistron_led_remove();
input_unregister_polled_device(wistron_idev);
input_free_polled_device(wistron_idev);
input_unregister_device(wistron_idev);
bios_detach();
return 0;