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Input - arizona-haptics: Add driver haptics module on Arizona CODECs

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The Arizona CODECs contain a haptics module providing vibration feedback
support. Implement basic support for this, providing simple start/stop and
signal magnitude control.

Since the output path for haptics is routed through the CODEC audio routing
it is modelled as a signal generator within ASoC, the haptics driver calls
DAPM to start and stop the output drivers. An appropriate output path must
be configured via ALSA to connect the haptics source to the correct output.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown
2012-11-26 21:17:21 +00:00
parent b951b523ea
commit 9dd555e2f4
4 changed files with 272 additions and 0 deletions
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6
include/linux/mfd/arizona/pdata.h
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@@ -62,6 +62,9 @@
#define ARIZONA_MAX_OUTPUT 6
#define ARIZONA_HAP_ACT_ERM 0
#define ARIZONA_HAP_ACT_LRA 2
#define ARIZONA_MAX_PDM_SPK 2
struct regulator_init_data;
@@ -114,6 +117,9 @@ struct arizona_pdata {
/** PDM speaker format */
unsigned int spk_fmt[ARIZONA_MAX_PDM_SPK];
/** Haptic actuator type */
unsigned int hap_act;
};
#endif