#include <linux/serio.h>
#include <linux/init.h>
+#define DRIVER_DESC "Handykey Twiddler keyboard as a joystick driver"
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
/*
* Constants.
*/
#define TWIDJOY_MAX_LENGTH 5
-static char *twidjoy_name = "Handykey Twiddler";
-
static struct twidjoy_button_spec {
int bitshift;
int bitmask;
*/
struct twidjoy {
- struct input_dev dev;
+ struct input_dev *dev;
int idx;
unsigned char data[TWIDJOY_MAX_LENGTH];
char phys[32];
static void twidjoy_process_packet(struct twidjoy *twidjoy, struct pt_regs *regs)
{
- if (twidjoy->idx == TWIDJOY_MAX_LENGTH) {
- struct input_dev *dev = &twidjoy->dev;
- unsigned char *data = twidjoy->data;
- struct twidjoy_button_spec *bp;
- int button_bits, abs_x, abs_y;
-
- button_bits = ((data[1] & 0x7f) << 7) | (data[0] & 0x7f);
+ struct input_dev *dev = twidjoy->dev;
+ unsigned char *data = twidjoy->data;
+ struct twidjoy_button_spec *bp;
+ int button_bits, abs_x, abs_y;
- input_regs(dev, regs);
+ button_bits = ((data[1] & 0x7f) << 7) | (data[0] & 0x7f);
- for (bp = twidjoy_buttons; bp->bitmask; bp++) {
- int value = (button_bits & (bp->bitmask << bp->bitshift)) >> bp->bitshift;
- int i;
+ input_regs(dev, regs);
- for (i = 0; i < bp->bitmask; i++)
- input_report_key(dev, bp->buttons[i], i+1 == value);
- }
+ for (bp = twidjoy_buttons; bp->bitmask; bp++) {
+ int value = (button_bits & (bp->bitmask << bp->bitshift)) >> bp->bitshift;
+ int i;
- abs_x = ((data[4] & 0x07) << 5) | ((data[3] & 0x7C) >> 2);
- if (data[4] & 0x08) abs_x -= 256;
+ for (i = 0; i < bp->bitmask; i++)
+ input_report_key(dev, bp->buttons[i], i+1 == value);
+ }
- abs_y = ((data[3] & 0x01) << 7) | ((data[2] & 0x7F) >> 0);
- if (data[3] & 0x02) abs_y -= 256;
+ abs_x = ((data[4] & 0x07) << 5) | ((data[3] & 0x7C) >> 2);
+ if (data[4] & 0x08) abs_x -= 256;
- input_report_abs(dev, ABS_X, -abs_x);
- input_report_abs(dev, ABS_Y, +abs_y);
+ abs_y = ((data[3] & 0x01) << 7) | ((data[2] & 0x7F) >> 0);
+ if (data[3] & 0x02) abs_y -= 256;
- input_sync(dev);
- }
+ input_report_abs(dev, ABS_X, -abs_x);
+ input_report_abs(dev, ABS_Y, +abs_y);
- return;
+ input_sync(dev);
}
/*
* packet processing routine.
*/
-static void twidjoy_interrupt(struct serio *serio, unsigned char data, unsigned int flags, struc pt_regs *regs)
+static irqreturn_t twidjoy_interrupt(struct serio *serio, unsigned char data, unsigned int flags, struct pt_regs *regs)
{
- struct twidjoy *twidjoy = serio->private;
+ struct twidjoy *twidjoy = serio_get_drvdata(serio);
/* All Twiddler packets are 5 bytes. The fact that the first byte
* has a MSB of 0 and all other bytes have a MSB of 1 can be used
if ((data & 0x80) == 0)
twidjoy->idx = 0; /* this byte starts a new packet */
else if (twidjoy->idx == 0)
- return; /* wrong MSB -- ignore this byte */
+ return IRQ_HANDLED; /* wrong MSB -- ignore this byte */
if (twidjoy->idx < TWIDJOY_MAX_LENGTH)
twidjoy->data[twidjoy->idx++] = data;
twidjoy->idx = 0;
}
- return;
+ return IRQ_HANDLED;
}
/*
static void twidjoy_disconnect(struct serio *serio)
{
- struct twidjoy *twidjoy = serio->private;
- input_unregister_device(&twidjoy->dev);
+ struct twidjoy *twidjoy = serio_get_drvdata(serio);
+
serio_close(serio);
+ serio_set_drvdata(serio, NULL);
+ input_unregister_device(twidjoy->dev);
kfree(twidjoy);
}
* it as an input device.
*/
-static void twidjoy_connect(struct serio *serio, struct serio_dev *dev)
+static int twidjoy_connect(struct serio *serio, struct serio_driver *drv)
{
struct twidjoy_button_spec *bp;
struct twidjoy *twidjoy;
+ struct input_dev *input_dev;
+ int err = -ENOMEM;
int i;
- if (serio->type != (SERIO_RS232 | SERIO_TWIDJOY))
- return;
-
- if (!(twidjoy = kmalloc(sizeof(struct twidjoy), GFP_KERNEL)))
- return;
-
- memset(twidjoy, 0, sizeof(struct twidjoy));
-
- sprintf(twidjoy->phys, "%s/input0", serio->phys);
-
- init_input_dev(&twidjoy->dev);
- twidjoy->dev.name = twidjoy_name;
- twidjoy->dev.phys = twidjoy->phys;
- twidjoy->dev.id.bustype = BUS_RS232;
- twidjoy->dev.id.vendor = SERIO_TWIDJOY;
- twidjoy->dev.id.product = 0x0001;
- twidjoy->dev.id.version = 0x0100;
-
- twidjoy->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
-
- for (bp = twidjoy_buttons; bp->bitmask; bp++) {
+ twidjoy = kzalloc(sizeof(struct twidjoy), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!twidjoy || !input_dev)
+ goto fail;
+
+ twidjoy->dev = input_dev;
+ snprintf(twidjoy->phys, sizeof(twidjoy->phys), "%s/input0", serio->phys);
+
+ input_dev->name = "Handykey Twiddler";
+ input_dev->phys = twidjoy->phys;
+ input_dev->id.bustype = BUS_RS232;
+ input_dev->id.vendor = SERIO_TWIDJOY;
+ input_dev->id.product = 0x0001;
+ input_dev->id.version = 0x0100;
+ input_dev->cdev.dev = &serio->dev;
+ input_dev->private = twidjoy;
+
+ input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ input_dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+ input_set_abs_params(input_dev, ABS_X, -50, 50, 4, 4);
+ input_set_abs_params(input_dev, ABS_Y, -50, 50, 4, 4);
+
+ for (bp = twidjoy_buttons; bp->bitmask; bp++)
for (i = 0; i < bp->bitmask; i++)
- set_bit(bp->buttons[i], twidjoy->dev.keybit);
- }
-
- twidjoy->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
-
- for (i = 0; i < 2; i++) {
- twidjoy->dev.absmax[ABS_X+i] = 50;
- twidjoy->dev.absmin[ABS_X+i] = -50;
+ set_bit(bp->buttons[i], input_dev->keybit);
- /* TODO: arndt 20010708: Are these values appropriate? */
- twidjoy->dev.absfuzz[ABS_X+i] = 4;
- twidjoy->dev.absflat[ABS_X+i] = 4;
- }
-
- twidjoy->dev.private = twidjoy;
- serio->private = twidjoy;
+ serio_set_drvdata(serio, twidjoy);
- if (serio_open(serio, dev)) {
- kfree(twidjoy);
- return;
- }
+ err = serio_open(serio, drv);
+ if (err)
+ goto fail;
- input_register_device(&twidjoy->dev);
+ input_register_device(twidjoy->dev);
+ return 0;
- printk(KERN_INFO "input: %s on %s\n", twidjoy_name, serio->phys);
+ fail: serio_set_drvdata(serio, NULL);
+ input_free_device(input_dev);
+ kfree(twidjoy);
+ return err;
}
/*
- * The serio device structure.
+ * The serio driver structure.
*/
-static struct serio_dev twidjoy_dev = {
- .interrupt = twidjoy_interrupt,
- .connect = twidjoy_connect,
- .disconnect = twidjoy_disconnect,
+static struct serio_device_id twidjoy_serio_ids[] = {
+ {
+ .type = SERIO_RS232,
+ .proto = SERIO_TWIDJOY,
+ .id = SERIO_ANY,
+ .extra = SERIO_ANY,
+ },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, twidjoy_serio_ids);
+
+static struct serio_driver twidjoy_drv = {
+ .driver = {
+ .name = "twidjoy",
+ },
+ .description = DRIVER_DESC,
+ .id_table = twidjoy_serio_ids,
+ .interrupt = twidjoy_interrupt,
+ .connect = twidjoy_connect,
+ .disconnect = twidjoy_disconnect,
};
/*
* The functions for inserting/removing us as a module.
*/
-int __init twidjoy_init(void)
+static int __init twidjoy_init(void)
{
- serio_register_device(&twidjoy_dev);
+ serio_register_driver(&twidjoy_drv);
return 0;
}
-void __exit twidjoy_exit(void)
+static void __exit twidjoy_exit(void)
{
- serio_unregister_device(&twidjoy_dev);
+ serio_unregister_driver(&twidjoy_drv);
}
module_init(twidjoy_init);
git://git.onelab.eu / linux-2.6.git / blobdiff