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Date: Fri, 1 Feb 2013 16:11:45 +0800
From: Daniel Kurtz <djkurtz@...omium.org>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
Henrik Rydberg <rydberg@...omail.se>,
Benson Leung <bleung@...omium.org>,
Yufeng Shen <miletus@...omium.org>,
Nick Dyer <nick.dyer@...ev.co.uk>
Cc: Joonyoung Shim <jy0922.shim@...sung.com>,
linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
olofj@...omium.org, Daniel Kurtz <djkurtz@...omium.org>
Subject: [PATCH 03/10] Input: atmel_mxt_ts - refactor input device creation
Move input device initialization to its own helper function.
This is in preparation of a future patch that makes input device
conditional on the device not being in its bootloader.
Signed-off-by: Daniel Kurtz <djkurtz@...omium.org>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 91 ++++++++++++++++++--------------
1 file changed, 50 insertions(+), 41 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 84f0408..9afc26e 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -1111,52 +1111,23 @@ static void mxt_input_close(struct input_dev *dev)
mxt_stop(data);
}
-static int mxt_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int mxt_input_dev_create(struct mxt_data *data)
{
- const struct mxt_platform_data *pdata = client->dev.platform_data;
- struct mxt_data *data;
struct input_dev *input_dev;
int error;
unsigned int num_mt_slots;
- if (!pdata)
- return -EINVAL;
-
- data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL);
- if (!data) {
- dev_err(&client->dev, "Failed to allocate memory\n");
+ data->input_dev = input_dev = input_allocate_device();
+ if (!input_dev)
return -ENOMEM;
- }
-
- input_dev = input_allocate_device();
- if (!input_dev) {
- dev_err(&client->dev, "Failed to allocate memory\n");
- error = -ENOMEM;
- goto err_free_mem;
- }
input_dev->name = "Atmel maXTouch Touchscreen";
- snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0",
- client->adapter->nr, client->addr);
input_dev->phys = data->phys;
-
input_dev->id.bustype = BUS_I2C;
- input_dev->dev.parent = &client->dev;
+ input_dev->dev.parent = &data->client->dev;
input_dev->open = mxt_input_open;
input_dev->close = mxt_input_close;
- data->client = client;
- data->input_dev = input_dev;
- data->pdata = pdata;
- data->irq = client->irq;
-
- mxt_calc_resolution(data);
-
- error = mxt_initialize(data);
- if (error)
- goto err_free_mem;
-
__set_bit(EV_ABS, input_dev->evbit);
__set_bit(EV_KEY, input_dev->evbit);
__set_bit(BTN_TOUCH, input_dev->keybit);
@@ -1172,10 +1143,8 @@ static int mxt_probe(struct i2c_client *client,
/* For multi touch */
num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1;
error = input_mt_init_slots(input_dev, num_mt_slots, 0);
- if (error) {
- input_free_device(input_dev);
- goto err_free_object;
- }
+ if (error)
+ goto err_free_device;
input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
0, MXT_MAX_AREA, 0, 0);
@@ -1187,14 +1156,54 @@ static int mxt_probe(struct i2c_client *client,
0, 255, 0, 0);
input_set_drvdata(input_dev, data);
- i2c_set_clientdata(client, data);
error = input_register_device(input_dev);
- if (error) {
- input_free_device(input_dev);
- goto err_free_object;
+ if (error)
+ goto err_free_device;
+
+ return 0;
+
+err_free_device:
+ input_free_device(data->input_dev);
+ data->input_dev = NULL;
+ return error;
+}
+
+static int __devinit mxt_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ const struct mxt_platform_data *pdata = client->dev.platform_data;
+ struct mxt_data *data;
+ int error;
+
+ if (!pdata)
+ return -EINVAL;
+
+ data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL);
+ if (!data) {
+ dev_err(&client->dev, "Failed to allocate memory\n");
+ return -ENOMEM;
}
+ snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0",
+ client->adapter->nr, client->addr);
+
+ data->client = client;
+ i2c_set_clientdata(client, data);
+
+ data->pdata = pdata;
+ data->irq = client->irq;
+
+ mxt_calc_resolution(data);
+
+ error = mxt_initialize(data);
+ if (error)
+ goto err_free_mem;
+
+ error = mxt_input_dev_create(data);
+ if (error)
+ goto err_free_object;
+
error = request_threaded_irq(client->irq, NULL, mxt_interrupt,
pdata->irqflags | IRQF_ONESHOT,
client->name, data);
--
1.8.1
--
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