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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2011-10-12 12:57:56 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-10-12 14:48:51 +0400
commit5f07c32e289d159be3fc1e4f257e8cad5336f83a (patch)
treeb6348851c124b5a5e9c6f51a8de062dc9fa7931a
parent70601ec10a2450369d554e49d708ab26deb17b66 (diff)
downloadlinux-5f07c32e289d159be3fc1e4f257e8cad5336f83a.tar.xz
Input: twl6040-vibra: Check the selected path for vibra
The VIBSELL/R bit in the VIBCTLL/R register tells the source of the data, which is going to be used to drive the attached motor(s). Do not allow effect execution if any of the channels are set to receive audio data. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r--drivers/input/misc/twl6040-vibra.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
index cb741858229a..2a828e53db58 100644
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -201,6 +201,13 @@ static int vibra_play(struct input_dev *input, void *data,
struct vibra_info *info = input_get_drvdata(input);
int ret;
+ /* Do not allow effect, while the routing is set to use audio */
+ ret = twl6040_get_vibralr_status(info->twl6040);
+ if (ret & TWL6040_VIBSEL) {
+ dev_info(&input->dev, "Vibra is configured for audio\n");
+ return -EBUSY;
+ }
+
info->weak_speed = effect->u.rumble.weak_magnitude;
info->strong_speed = effect->u.rumble.strong_magnitude;
info->direction = effect->direction < EFFECT_DIR_180_DEG ? 1 : -1;