linux-kernel - [PATCH 12/22] Input: cobalt_btns - switch to using polled mode of input devices

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Date:   Thu, 17 Oct 2019 13:42:06 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     linux-input@...r.kernel.org
Cc:     Allison Randal <allison@...utok.net>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Brian Masney <masneyb@...tation.org>,
        Jilayne Lovejoy <opensource@...ayne.com>,
        Luca Weiss <luca@...tu.xyz>,
        Maximilian Luz <luzmaximilian@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 12/22] Input: cobalt_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 cobalt_btns driver to use
the polling mode of standard input devices and removes dependency on
INPUT_POLLDEV.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---

 drivers/input/misc/Kconfig       |  1 -
 drivers/input/misc/cobalt_btns.c | 26 ++++++++++++++------------
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 248e3b40bd24..05520bf4e31d 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -326,7 +326,6 @@ config INPUT_IXP4XX_BEEPER
 config INPUT_COBALT_BTNS
 	tristate "Cobalt button interface"
 	depends on MIPS_COBALT
-	select INPUT_POLLDEV
 	help
 	  Say Y here if you want to support MIPS Cobalt button interface.
 
diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c
index f7c1693fc6bb..b1624f5414ee 100644
--- a/drivers/input/misc/cobalt_btns.c
+++ b/drivers/input/misc/cobalt_btns.c
@@ -4,7 +4,7 @@
  *
  *  Copyright (C) 2007-2008  Yoichi Yuasa <yuasa@...ux-mips.org>
  */
-#include <linux/input-polldev.h>
+#include <linux/input.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
 #include <linux/module.h>
@@ -32,10 +32,9 @@ struct buttons_dev {
 	void __iomem *reg;
 };
 
-static void handle_buttons(struct input_polled_dev *dev)
+static void handle_buttons(struct input_dev *input)
 {
-	struct buttons_dev *bdev = dev->private;
-	struct input_dev *input = dev->input;
+	struct buttons_dev *bdev = input_get_drvdata(input);
 	uint32_t status;
 	int i;
 
@@ -62,7 +61,6 @@ static void handle_buttons(struct input_polled_dev *dev)
 static int cobalt_buttons_probe(struct platform_device *pdev)
 {
 	struct buttons_dev *bdev;
-	struct input_polled_dev *poll_dev;
 	struct input_dev *input;
 	struct resource *res;
 	int error, i;
@@ -81,15 +79,12 @@ static int cobalt_buttons_probe(struct platform_device *pdev)
 
 	memcpy(bdev->keymap, cobalt_map, sizeof(bdev->keymap));
 
-	poll_dev = devm_input_allocate_polled_device(&pdev->dev);
-	if (!poll_dev)
+	input = devm_input_allocate_device(&pdev->dev);
+	if (!input)
 		return -ENOMEM;
 
-	poll_dev->private = bdev;
-	poll_dev->poll = handle_buttons;
-	poll_dev->poll_interval = BUTTONS_POLL_INTERVAL;
+	input_set_drvdata(input, bdev);
 
-	input = poll_dev->input;
 	input->name = "Cobalt buttons";
 	input->phys = "cobalt/input0";
 	input->id.bustype = BUS_HOST;
@@ -104,7 +99,14 @@ static int cobalt_buttons_probe(struct platform_device *pdev)
 		__set_bit(bdev->keymap[i], input->keybit);
 	__clear_bit(KEY_RESERVED, input->keybit);
 
-	error = input_register_polled_device(poll_dev);
+
+	error = input_setup_polling(input, handle_buttons);
+	if (error)
+		return error;
+
+	input_set_poll_interval(input, BUTTONS_POLL_INTERVAL);
+
+	error = input_register_device(input);
 	if (error)
 		return error;
 
-- 
2.23.0.866.gb869b98d4c-goog