Implement disable attribute for tsc2005 touchscreen. It is useful to avoid wakeups when phone is in the pocket.
Signed-off-by: Pavel Machek <[email protected]> --- [This is from Pali's n900 tree that is GPL, so that is okay, but maybe I should get his sign-off here?] diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c index 52380b6..ec1c276 100644 --- a/drivers/input/touchscreen/tsc2005.c +++ b/drivers/input/touchscreen/tsc2005.c @@ -147,6 +147,7 @@ struct tsc2005 { unsigned int x_plate_ohm; + bool disabled; bool opened; bool suspended; @@ -384,6 +385,48 @@ static void __tsc2005_enable(struct tsc2005 *ts) } +static ssize_t tsc2005_disable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct spi_device *spi = to_spi_device(dev); + struct tsc2005 *ts = spi_get_drvdata(spi); + + return sprintf(buf, "%u\n", ts->disabled); +} + +static ssize_t tsc2005_disable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct spi_device *spi = to_spi_device(dev); + struct tsc2005 *ts = spi_get_drvdata(spi); + unsigned long val; + int error; + + error = kstrtoul(buf, 10, &val); + if (error) + return error; + + mutex_lock(&ts->mutex); + + if (!ts->suspended && ts->opened) { + if (val) { + if (!ts->disabled) + __tsc2005_disable(ts); + } else { + if (ts->disabled) + __tsc2005_enable(ts); + } + } + + ts->disabled = !!val; + + mutex_unlock(&ts->mutex); + + return count; +} +static DEVICE_ATTR(disable, 0664, tsc2005_disable_show, tsc2005_disable_store); + static ssize_t tsc2005_selftest_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -466,6 +509,7 @@ out: static DEVICE_ATTR(selftest, S_IRUGO, tsc2005_selftest_show, NULL); static struct attribute *tsc2005_attrs[] = { + &dev_attr_disable.attr, &dev_attr_selftest.attr, NULL }; @@ -551,7 +595,7 @@ static int tsc2005_open(struct input_dev *input) mutex_lock(&ts->mutex); - if (!ts->suspended) + if (!ts->suspended && !ts->disabled) __tsc2005_enable(ts); ts->opened = true; @@ -567,7 +611,7 @@ static void tsc2005_close(struct input_dev *input) mutex_lock(&ts->mutex); - if (!ts->suspended) + if (!ts->suspended && !ts->disabled) __tsc2005_disable(ts); ts->opened = false; @@ -781,7 +825,7 @@ static int tsc2005_suspend(struct device *dev) mutex_lock(&ts->mutex); - if (!ts->suspended && ts->opened) + if (!ts->suspended && !ts->disabled && ts->opened) __tsc2005_disable(ts); ts->suspended = true; @@ -798,7 +842,7 @@ static int tsc2005_resume(struct device *dev) mutex_lock(&ts->mutex); - if (ts->suspended && ts->opened) + if (ts->suspended && !ts->disabled && ts->opened) __tsc2005_enable(ts); ts->suspended = false; -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
