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path: root/drivers/input/touchscreen/elo.c
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Diffstat (limited to 'drivers/input/touchscreen/elo.c')
-rw-r--r--drivers/input/touchscreen/elo.c89
1 files changed, 44 insertions, 45 deletions
diff --git a/drivers/input/touchscreen/elo.c b/drivers/input/touchscreen/elo.c
index 3cdc9cab688d..c86a2eb310fd 100644
--- a/drivers/input/touchscreen/elo.c
+++ b/drivers/input/touchscreen/elo.c
@@ -36,14 +36,12 @@ MODULE_LICENSE("GPL");
#define ELO_MAX_LENGTH 10
-static char *elo_name = "Elo Serial TouchScreen";
-
/*
* Per-touchscreen data.
*/
struct elo {
- struct input_dev dev;
+ struct input_dev *dev;
struct serio *serio;
int id;
int idx;
@@ -54,7 +52,7 @@ struct elo {
static void elo_process_data_10(struct elo* elo, unsigned char data, struct pt_regs *regs)
{
- struct input_dev *dev = &elo->dev;
+ struct input_dev *dev = elo->dev;
elo->csum += elo->data[elo->idx] = data;
@@ -80,7 +78,7 @@ static void elo_process_data_10(struct elo* elo, unsigned char data, struct pt_r
input_report_abs(dev, ABS_X, (elo->data[4] << 8) | elo->data[3]);
input_report_abs(dev, ABS_Y, (elo->data[6] << 8) | elo->data[5]);
input_report_abs(dev, ABS_PRESSURE, (elo->data[8] << 8) | elo->data[7]);
- input_report_key(dev, BTN_TOUCH, elo->data[2] & 3);
+ input_report_key(dev, BTN_TOUCH, elo->data[8] || elo->data[7]);
input_sync(dev);
}
elo->idx = 0;
@@ -91,7 +89,7 @@ static void elo_process_data_10(struct elo* elo, unsigned char data, struct pt_r
static void elo_process_data_6(struct elo* elo, unsigned char data, struct pt_regs *regs)
{
- struct input_dev *dev = &elo->dev;
+ struct input_dev *dev = elo->dev;
elo->data[elo->idx] = data;
@@ -129,7 +127,7 @@ static void elo_process_data_6(struct elo* elo, unsigned char data, struct pt_re
case 5:
if ((data & 0xf0) == 0) {
input_report_abs(dev, ABS_PRESSURE, elo->data[5]);
- input_report_key(dev, BTN_TOUCH, elo->data[5]);
+ input_report_key(dev, BTN_TOUCH, !!elo->data[5]);
}
input_sync(dev);
elo->idx = 0;
@@ -139,7 +137,7 @@ static void elo_process_data_6(struct elo* elo, unsigned char data, struct pt_re
static void elo_process_data_3(struct elo* elo, unsigned char data, struct pt_regs *regs)
{
- struct input_dev *dev = &elo->dev;
+ struct input_dev *dev = elo->dev;
elo->data[elo->idx] = data;
@@ -191,7 +189,7 @@ static void elo_disconnect(struct serio *serio)
{
struct elo* elo = serio_get_drvdata(serio);
- input_unregister_device(&elo->dev);
+ input_unregister_device(elo->dev);
serio_close(serio);
serio_set_drvdata(serio, NULL);
kfree(elo);
@@ -206,67 +204,68 @@ static void elo_disconnect(struct serio *serio)
static int elo_connect(struct serio *serio, struct serio_driver *drv)
{
struct elo *elo;
+ struct input_dev *input_dev;
int err;
- if (!(elo = kmalloc(sizeof(struct elo), GFP_KERNEL)))
- return -ENOMEM;
+ elo = kzalloc(sizeof(struct elo), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!elo || !input_dev) {
+ err = -ENOMEM;
+ goto fail;
+ }
- memset(elo, 0, sizeof(struct elo));
+ elo->serio = serio;
+ elo->id = serio->id.id;
+ elo->dev = input_dev;
+ snprintf(elo->phys, sizeof(elo->phys), "%s/input0", serio->phys);
- init_input_dev(&elo->dev);
- elo->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
- elo->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+ input_dev->private = elo;
+ input_dev->name = "Elo Serial TouchScreen";
+ input_dev->phys = elo->phys;
+ input_dev->id.bustype = BUS_RS232;
+ input_dev->id.vendor = SERIO_ELO;
+ input_dev->id.product = elo->id;
+ input_dev->id.version = 0x0100;
+ input_dev->cdev.dev = &serio->dev;
- elo->id = serio->id.id;
+ input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
switch (elo->id) {
case 0: /* 10-byte protocol */
- input_set_abs_params(&elo->dev, ABS_X, 96, 4000, 0, 0);
- input_set_abs_params(&elo->dev, ABS_Y, 96, 4000, 0, 0);
- input_set_abs_params(&elo->dev, ABS_PRESSURE, 0, 255, 0, 0);
+ input_set_abs_params(input_dev, ABS_X, 96, 4000, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 96, 4000, 0, 0);
+ input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0);
break;
case 1: /* 6-byte protocol */
- input_set_abs_params(&elo->dev, ABS_PRESSURE, 0, 15, 0, 0);
+ input_set_abs_params(input_dev, ABS_PRESSURE, 0, 15, 0, 0);
case 2: /* 4-byte protocol */
- input_set_abs_params(&elo->dev, ABS_X, 96, 4000, 0, 0);
- input_set_abs_params(&elo->dev, ABS_Y, 96, 4000, 0, 0);
+ input_set_abs_params(input_dev, ABS_X, 96, 4000, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 96, 4000, 0, 0);
break;
case 3: /* 3-byte protocol */
- input_set_abs_params(&elo->dev, ABS_X, 0, 255, 0, 0);
- input_set_abs_params(&elo->dev, ABS_Y, 0, 255, 0, 0);
+ input_set_abs_params(input_dev, ABS_X, 0, 255, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 0, 255, 0, 0);
break;
}
- elo->serio = serio;
-
- sprintf(elo->phys, "%s/input0", serio->phys);
-
- elo->dev.private = elo;
- elo->dev.name = elo_name;
- elo->dev.phys = elo->phys;
- elo->dev.id.bustype = BUS_RS232;
- elo->dev.id.vendor = SERIO_ELO;
- elo->dev.id.product = elo->id;
- elo->dev.id.version = 0x0100;
-
serio_set_drvdata(serio, elo);
err = serio_open(serio, drv);
- if (err) {
- serio_set_drvdata(serio, NULL);
- kfree(elo);
- return err;
- }
-
- input_register_device(&elo->dev);
-
- printk(KERN_INFO "input: %s on %s\n", elo_name, serio->phys);
+ if (err)
+ goto fail;
+ input_register_device(elo->dev);
return 0;
+
+ fail: serio_set_drvdata(serio, NULL);
+ input_free_device(input_dev);
+ kfree(elo);
+ return err;
}
/*
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.