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Date: Thu, 17 Oct 2019 13:41:57 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: linux-input@...r.kernel.org
Cc: Anders Roxell <anders.roxell@...aro.org>,
Jeff LaBundy <jeff@...undy.com>,
Martin Kepplinger <martink@...teo.de>,
Mukesh Ojha <mojha@...eaurora.org>,
Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
linux-kernel@...r.kernel.org
Subject: [PATCH 03/22] Input: ts4800-ts - 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 ts4800-ts 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/touchscreen/Kconfig | 1 -
drivers/input/touchscreen/ts4800-ts.c | 68 +++++++++++++++------------
2 files changed, 38 insertions(+), 31 deletions(-)
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index df9cb92166c3..2c00232b2506 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -1037,7 +1037,6 @@ config TOUCHSCREEN_TS4800
depends on HAS_IOMEM && OF
depends on SOC_IMX51 || COMPILE_TEST
select MFD_SYSCON
- select INPUT_POLLDEV
help
Say Y here if you have a touchscreen on a TS-4800 board.
diff --git a/drivers/input/touchscreen/ts4800-ts.c b/drivers/input/touchscreen/ts4800-ts.c
index 5b4f5362c67b..6cf66aadc10e 100644
--- a/drivers/input/touchscreen/ts4800-ts.c
+++ b/drivers/input/touchscreen/ts4800-ts.c
@@ -10,7 +10,6 @@
#include <linux/bitops.h>
#include <linux/input.h>
-#include <linux/input-polldev.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
@@ -33,7 +32,7 @@
#define Y_OFFSET 0x2
struct ts4800_ts {
- struct input_polled_dev *poll_dev;
+ struct input_dev *input;
struct device *dev;
char phys[32];
@@ -46,22 +45,26 @@ struct ts4800_ts {
int debounce;
};
-static void ts4800_ts_open(struct input_polled_dev *dev)
+static int ts4800_ts_open(struct input_dev *input_dev)
{
- struct ts4800_ts *ts = dev->private;
- int ret;
+ struct ts4800_ts *ts = input_get_drvdata(input_dev);
+ int error;
ts->pendown = false;
ts->debounce = DEBOUNCE_COUNT;
- ret = regmap_update_bits(ts->regmap, ts->reg, ts->bit, ts->bit);
- if (ret)
- dev_warn(ts->dev, "Failed to enable touchscreen\n");
+ error = regmap_update_bits(ts->regmap, ts->reg, ts->bit, ts->bit);
+ if (error) {
+ dev_warn(ts->dev, "Failed to enable touchscreen: %d\n", error);
+ return error;
+ }
+
+ return 0;
}
-static void ts4800_ts_close(struct input_polled_dev *dev)
+static void ts4800_ts_close(struct input_dev *input_dev)
{
- struct ts4800_ts *ts = dev->private;
+ struct ts4800_ts *ts = input_get_drvdata(input_dev);
int ret;
ret = regmap_update_bits(ts->regmap, ts->reg, ts->bit, 0);
@@ -70,10 +73,9 @@ static void ts4800_ts_close(struct input_polled_dev *dev)
}
-static void ts4800_ts_poll(struct input_polled_dev *dev)
+static void ts4800_ts_poll(struct input_dev *input_dev)
{
- struct input_dev *input_dev = dev->input;
- struct ts4800_ts *ts = dev->private;
+ struct ts4800_ts *ts = input_get_drvdata(input_dev);
u16 last_x = readw(ts->base + X_OFFSET);
u16 last_y = readw(ts->base + Y_OFFSET);
bool pendown = last_x & PENDOWN_MASK;
@@ -146,7 +148,7 @@ static int ts4800_parse_dt(struct platform_device *pdev,
static int ts4800_ts_probe(struct platform_device *pdev)
{
- struct input_polled_dev *poll_dev;
+ struct input_dev *input_dev;
struct ts4800_ts *ts;
int error;
@@ -162,32 +164,38 @@ static int ts4800_ts_probe(struct platform_device *pdev)
if (IS_ERR(ts->base))
return PTR_ERR(ts->base);
- poll_dev = devm_input_allocate_polled_device(&pdev->dev);
- if (!poll_dev)
+ input_dev = devm_input_allocate_device(&pdev->dev);
+ if (!input_dev)
return -ENOMEM;
snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&pdev->dev));
- ts->poll_dev = poll_dev;
+ ts->input = input_dev;
ts->dev = &pdev->dev;
- poll_dev->private = ts;
- poll_dev->poll_interval = POLL_INTERVAL;
- poll_dev->open = ts4800_ts_open;
- poll_dev->close = ts4800_ts_close;
- poll_dev->poll = ts4800_ts_poll;
+ input_set_drvdata(input_dev, ts);
+
+ input_dev->name = "TS-4800 Touchscreen";
+ input_dev->phys = ts->phys;
+
+ input_dev->open = ts4800_ts_open;
+ input_dev->close = ts4800_ts_close;
+
+ input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
+ input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0);
- poll_dev->input->name = "TS-4800 Touchscreen";
- poll_dev->input->phys = ts->phys;
+ error = input_setup_polling(input_dev, ts4800_ts_poll);
+ if (error) {
+ dev_err(&pdev->dev, "Unable to set up polling: %d\n", error);
+ return error;
+ }
- input_set_capability(poll_dev->input, EV_KEY, BTN_TOUCH);
- input_set_abs_params(poll_dev->input, ABS_X, 0, MAX_12BIT, 0, 0);
- input_set_abs_params(poll_dev->input, ABS_Y, 0, MAX_12BIT, 0, 0);
+ input_set_poll_interval(input_dev, POLL_INTERVAL);
- error = input_register_polled_device(poll_dev);
+ error = input_register_device(input_dev);
if (error) {
dev_err(&pdev->dev,
- "Unabled to register polled input device (%d)\n",
- error);
+ "Unable to register input device: %d\n", error);
return error;
}
--
2.23.0.866.gb869b98d4c-goog
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