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-rw-r--r--drivers/input/touchscreen/ads7846.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 46d1fec2cfd8..7f384a694d80 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -233,6 +233,21 @@ SHOW(temp1)
233SHOW(vaux) 233SHOW(vaux)
234SHOW(vbatt) 234SHOW(vbatt)
235 235
236static int is_pen_down(struct device *dev)
237{
238 struct ads7846 *ts = dev_get_drvdata(dev);
239
240 return ts->pendown;
241}
242
243static ssize_t ads7846_pen_down_show(struct device *dev,
244 struct device_attribute *attr, char *buf)
245{
246 return sprintf(buf, "%u\n", is_pen_down(dev));
247}
248
249static DEVICE_ATTR(pen_down, S_IRUGO, ads7846_pen_down_show, NULL);
250
236/*--------------------------------------------------------------------------*/ 251/*--------------------------------------------------------------------------*/
237 252
238/* 253/*
@@ -559,6 +574,8 @@ static int __devinit ads7846_probe(struct spi_device *spi)
559 device_create_file(&spi->dev, &dev_attr_vbatt); 574 device_create_file(&spi->dev, &dev_attr_vbatt);
560 device_create_file(&spi->dev, &dev_attr_vaux); 575 device_create_file(&spi->dev, &dev_attr_vaux);
561 576
577 device_create_file(&spi->dev, &dev_attr_pen_down);
578
562 err = input_register_device(input_dev); 579 err = input_register_device(input_dev);
563 if (err) 580 if (err)
564 goto err_free_irq; 581 goto err_free_irq;
@@ -582,6 +599,8 @@ static int __devexit ads7846_remove(struct spi_device *spi)
582 if (ts->irq_disabled) 599 if (ts->irq_disabled)
583 enable_irq(ts->spi->irq); 600 enable_irq(ts->spi->irq);
584 601
602 device_remove_file(&spi->dev, &dev_attr_pen_down);
603
585 if (ts->model == 7846) { 604 if (ts->model == 7846) {
586 device_remove_file(&spi->dev, &dev_attr_temp0); 605 device_remove_file(&spi->dev, &dev_attr_temp0);
587 device_remove_file(&spi->dev, &dev_attr_temp1); 606 device_remove_file(&spi->dev, &dev_attr_temp1);