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Commit a90f7e98 authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: ads7846 - convert to to dynamic input_dev allocation 



Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent b8044c74

drivers/input/touchscreen/ads7846.c

+47 −32
Original line number Diff line number Diff line
@@ -60,7 +60,7 @@ struct ts_event { 
};



struct ads7846 {

	struct input_dev	input;

	struct input_dev	*input;

	char			phys[32];



	struct spi_device	*spi;
@@ -237,6 +237,7 @@ SHOW(vbatt) 
static void ads7846_rx(void *ads)

{

	struct ads7846		*ts = ads;

	struct input_dev	*input_dev = ts->input;

	unsigned		Rt;

	unsigned		sync = 0;

	u16			x, y, z1, z2;
@@ -276,21 +277,21 @@ static void ads7846_rx(void *ads) 
	 * won't notice that, even if nPENIRQ never fires ...

	 */

	if (!ts->pendown && Rt != 0) {

		input_report_key(&ts->input, BTN_TOUCH, 1);

		input_report_key(input_dev, BTN_TOUCH, 1);

		sync = 1;

	} else if (ts->pendown && Rt == 0) {

		input_report_key(&ts->input, BTN_TOUCH, 0);

		input_report_key(input_dev, BTN_TOUCH, 0);

		sync = 1;

	}



	if (Rt) {

		input_report_abs(&ts->input, ABS_X, x);

		input_report_abs(&ts->input, ABS_Y, y);

		input_report_abs(&ts->input, ABS_PRESSURE, Rt);

		input_report_abs(input_dev, ABS_X, x);

		input_report_abs(input_dev, ABS_Y, y);

		input_report_abs(input_dev, ABS_PRESSURE, Rt);

		sync = 1;

	}

	if (sync)

		input_sync(&ts->input);

		input_sync(input_dev);



#ifdef	VERBOSE

	if (Rt || ts->pendown)
@@ -396,9 +397,11 @@ static int ads7846_resume(struct spi_device *spi) 
static int __devinit ads7846_probe(struct spi_device *spi)

{

	struct ads7846			*ts;

	struct input_dev		*input_dev;

	struct ads7846_platform_data	*pdata = spi->dev.platform_data;

	struct spi_transfer		*x;

	int				i;

	int				err;



	if (!spi->irq) {

		dev_dbg(&spi->dev, "no IRQ?\n");
@@ -423,13 +426,18 @@ static int __devinit ads7846_probe(struct spi_device *spi) 
	 * to discard the four garbage LSBs.

	 */



	if (!(ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL)))

		return -ENOMEM;

	ts = kzalloc(sizeof(struct ads7846), GFP_KERNEL);

	input_dev = input_allocate_device();

	if (!ts || !input_dev) {

		err = -ENOMEM;

		goto err_free_mem;

	}



	dev_set_drvdata(&spi->dev, ts);

	spi->dev.power.power_state = PMSG_ON;



	ts->spi = spi;

	spi->dev.power.power_state = PMSG_ON;

	ts->input = input_dev;



	init_timer(&ts->timer);

	ts->timer.data = (unsigned long) ts;
@@ -439,28 +447,25 @@ static int __devinit ads7846_probe(struct spi_device *spi) 
	ts->vref_delay_usecs = pdata->vref_delay_usecs ? : 100;

	ts->x_plate_ohms = pdata->x_plate_ohms ? : 400;



	init_input_dev(&ts->input);

	snprintf(ts->phys, sizeof(ts->phys), "%s/input0", spi->dev.bus_id);



	ts->input.dev = &spi->dev;

	ts->input.name = "ADS784x Touchscreen";

	snprintf(ts->phys, sizeof ts->phys, "%s/input0", spi->dev.bus_id);

	ts->input.phys = ts->phys;

	input_dev->name = "ADS784x Touchscreen";

	input_dev->phys = ts->phys;

	input_dev->cdev.dev = &spi->dev;



	ts->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);

	ts->input.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);

	input_set_abs_params(&ts->input, ABS_X,

	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);

	input_dev->keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);

	input_set_abs_params(input_dev, ABS_X,

			pdata->x_min ? : 0,

			pdata->x_max ? : MAX_12BIT,

			0, 0);

	input_set_abs_params(&ts->input, ABS_Y,

	input_set_abs_params(input_dev, ABS_Y,

			pdata->y_min ? : 0,

			pdata->y_max ? : MAX_12BIT,

			0, 0);

	input_set_abs_params(&ts->input, ABS_PRESSURE,

	input_set_abs_params(input_dev, ABS_PRESSURE,

			pdata->pressure_min, pdata->pressure_max, 0, 0);



	input_register_device(&ts->input);



	/* set up the transfers to read touchscreen state; this assumes we

	 * use formula #2 for pressure, not #3.

	 */
@@ -510,9 +515,8 @@ static int __devinit ads7846_probe(struct spi_device *spi) 
			SA_SAMPLE_RANDOM | SA_TRIGGER_FALLING,

			spi->dev.bus_id, ts)) {

		dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq);

		input_unregister_device(&ts->input);

		kfree(ts);

		return -EBUSY;

		err = -EBUSY;

		goto err_free_mem;

	}



	dev_info(&spi->dev, "touchscreen, irq %d\n", spi->irq);
@@ -534,7 +538,18 @@ static int __devinit ads7846_probe(struct spi_device *spi) 
		device_create_file(&spi->dev, &dev_attr_vbatt);

	device_create_file(&spi->dev, &dev_attr_vaux);



	err = input_register_device(input_dev);

	if (err)

		goto err_free_irq;



	return 0;



 err_free_irq:

	free_irq(spi->irq, ts);

 err_free_mem:

	input_free_device(input_dev);

	kfree(ts);

	return err;

}



static int __devexit ads7846_remove(struct spi_device *spi)
@@ -554,7 +569,7 @@ static int __devexit ads7846_remove(struct spi_device *spi) 
		device_remove_file(&spi->dev, &dev_attr_vbatt);

	device_remove_file(&spi->dev, &dev_attr_vaux);



	input_unregister_device(&ts->input);

	input_unregister_device(ts->input);

	kfree(ts);



	dev_dbg(&spi->dev, "unregistered touchscreen\n");