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Message-Id: <20191017204217.106453-9-dmitry.torokhov@gmail.com>
Date: Thu, 17 Oct 2019 13:42:02 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: linux-input@...r.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Anson Huang <Anson.Huang@....com>,
"Enrico Weigelt, metux IT consult" <info@...ux.net>,
"Gustavo A. R. Silva" <gustavo@...eddedor.com>,
Jacky Bai <ping.bai@....com>,
Marco Felsch <m.felsch@...gutronix.de>,
Ronald Tschalär <ronald@...ovation.ch>,
Stefan Agner <stefan@...er.ch>,
YueHaibing <yuehaibing@...wei.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 08/22] Input: gpio_keys_polled - 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 gpio_keys_polled driver to use
the polling mode of standard input devices and removes dependency on
INPUT_POLLDEV.
Note that we still keep polled and non-polled gpio-keys drivers separate,
as they are different enough and mixing them up would make the code pretty
confusing.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
drivers/input/keyboard/Kconfig | 1 -
drivers/input/keyboard/gpio_keys_polled.c | 65 ++++++++++++-----------
2 files changed, 34 insertions(+), 32 deletions(-)
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 54b1905ebbfe..2856b4f72b12 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -248,7 +248,6 @@ config KEYBOARD_GPIO
config KEYBOARD_GPIO_POLLED
tristate "Polled GPIO buttons"
depends on GPIOLIB
- select INPUT_POLLDEV
help
This driver implements support for buttons connected
to GPIO pins that are not capable of generating interrupts.
diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index 465eecfa6b3f..4c93b85773ad 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -16,7 +16,6 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
-#include <linux/input-polldev.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
@@ -34,7 +33,7 @@ struct gpio_keys_button_data {
};
struct gpio_keys_polled_dev {
- struct input_polled_dev *poll_dev;
+ struct input_dev *input;
struct device *dev;
const struct gpio_keys_platform_data *pdata;
unsigned long rel_axis_seen[BITS_TO_LONGS(REL_CNT)];
@@ -42,12 +41,11 @@ struct gpio_keys_polled_dev {
struct gpio_keys_button_data data[0];
};
-static void gpio_keys_button_event(struct input_polled_dev *dev,
+static void gpio_keys_button_event(struct input_dev *input,
const struct gpio_keys_button *button,
int state)
{
- struct gpio_keys_polled_dev *bdev = dev->private;
- struct input_dev *input = dev->input;
+ struct gpio_keys_polled_dev *bdev = input_get_drvdata(input);
unsigned int type = button->type ?: EV_KEY;
if (type == EV_REL) {
@@ -66,7 +64,7 @@ static void gpio_keys_button_event(struct input_polled_dev *dev,
}
}
-static void gpio_keys_polled_check_state(struct input_polled_dev *dev,
+static void gpio_keys_polled_check_state(struct input_dev *input,
const struct gpio_keys_button *button,
struct gpio_keys_button_data *bdata)
{
@@ -74,10 +72,10 @@ static void gpio_keys_polled_check_state(struct input_polled_dev *dev,
state = gpiod_get_value_cansleep(bdata->gpiod);
if (state < 0) {
- dev_err(dev->input->dev.parent,
+ dev_err(input->dev.parent,
"failed to get gpio state: %d\n", state);
} else {
- gpio_keys_button_event(dev, button, state);
+ gpio_keys_button_event(input, button, state);
if (state != bdata->last_state) {
bdata->count = 0;
@@ -86,11 +84,10 @@ static void gpio_keys_polled_check_state(struct input_polled_dev *dev,
}
}
-static void gpio_keys_polled_poll(struct input_polled_dev *dev)
+static void gpio_keys_polled_poll(struct input_dev *input)
{
- struct gpio_keys_polled_dev *bdev = dev->private;
+ struct gpio_keys_polled_dev *bdev = input_get_drvdata(input);
const struct gpio_keys_platform_data *pdata = bdev->pdata;
- struct input_dev *input = dev->input;
int i;
memset(bdev->rel_axis_seen, 0, sizeof(bdev->rel_axis_seen));
@@ -101,10 +98,10 @@ static void gpio_keys_polled_poll(struct input_polled_dev *dev)
if (bdata->count < bdata->threshold) {
bdata->count++;
- gpio_keys_button_event(dev, &pdata->buttons[i],
+ gpio_keys_button_event(input, &pdata->buttons[i],
bdata->last_state);
} else {
- gpio_keys_polled_check_state(dev, &pdata->buttons[i],
+ gpio_keys_polled_check_state(input, &pdata->buttons[i],
bdata);
}
}
@@ -122,18 +119,20 @@ static void gpio_keys_polled_poll(struct input_polled_dev *dev)
input_sync(input);
}
-static void gpio_keys_polled_open(struct input_polled_dev *dev)
+static int gpio_keys_polled_open(struct input_dev *input)
{
- struct gpio_keys_polled_dev *bdev = dev->private;
+ struct gpio_keys_polled_dev *bdev = input_get_drvdata(input);
const struct gpio_keys_platform_data *pdata = bdev->pdata;
if (pdata->enable)
pdata->enable(bdev->dev);
+
+ return 0;
}
-static void gpio_keys_polled_close(struct input_polled_dev *dev)
+static void gpio_keys_polled_close(struct input_dev *input)
{
- struct gpio_keys_polled_dev *bdev = dev->private;
+ struct gpio_keys_polled_dev *bdev = input_get_drvdata(input);
const struct gpio_keys_platform_data *pdata = bdev->pdata;
if (pdata->disable)
@@ -232,7 +231,6 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
struct fwnode_handle *child = NULL;
const struct gpio_keys_platform_data *pdata = dev_get_platdata(dev);
struct gpio_keys_polled_dev *bdev;
- struct input_polled_dev *poll_dev;
struct input_dev *input;
int error;
int i;
@@ -255,19 +253,13 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
return -ENOMEM;
}
- poll_dev = devm_input_allocate_polled_device(dev);
- if (!poll_dev) {
- dev_err(dev, "no memory for polled device\n");
+ input = devm_input_allocate_device(dev);
+ if (!input) {
+ dev_err(dev, "no memory for input device\n");
return -ENOMEM;
}
- poll_dev->private = bdev;
- poll_dev->poll = gpio_keys_polled_poll;
- poll_dev->poll_interval = pdata->poll_interval;
- poll_dev->open = gpio_keys_polled_open;
- poll_dev->close = gpio_keys_polled_close;
-
- input = poll_dev->input;
+ input_set_drvdata(input, bdev);
input->name = pdata->name ?: pdev->name;
input->phys = DRV_NAME"/input0";
@@ -277,6 +269,9 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
input->id.product = 0x0001;
input->id.version = 0x0100;
+ input->open = gpio_keys_polled_open;
+ input->close = gpio_keys_polled_close;
+
__set_bit(EV_KEY, input->evbit);
if (pdata->rep)
__set_bit(EV_REP, input->evbit);
@@ -353,11 +348,19 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
fwnode_handle_put(child);
- bdev->poll_dev = poll_dev;
+ bdev->input = input;
bdev->dev = dev;
bdev->pdata = pdata;
- error = input_register_polled_device(poll_dev);
+ error = input_setup_polling(input, gpio_keys_polled_poll);
+ if (error) {
+ dev_err(dev, "unable to set up polling, err=%d\n", error);
+ return error;
+ }
+
+ input_set_poll_interval(input, pdata->poll_interval);
+
+ error = input_register_device(input);
if (error) {
dev_err(dev, "unable to register polled device, err=%d\n",
error);
@@ -366,7 +369,7 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
/* report initial state of the buttons */
for (i = 0; i < pdata->nbuttons; i++)
- gpio_keys_polled_check_state(poll_dev, &pdata->buttons[i],
+ gpio_keys_polled_check_state(input, &pdata->buttons[i],
&bdev->data[i]);
input_sync(input);
--
2.23.0.866.gb869b98d4c-goog
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