diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-01-11 08:55:36 +0900 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2013-01-15 15:42:17 +0900 |
| commit | dab63eb25ced7539a51b8f4218f7b6b56d34df22 (patch) | |
| tree | 1f97a0380d70d4207b57a2d2987f3ce18ebc9586 /drivers/extcon | |
| parent | b17e54625cff1b06aec9df505b46c9bcdcd4823d (diff) | |
| download | linux-dab63eb25ced7539a51b8f4218f7b6b56d34df22.tar.gz linux-dab63eb25ced7539a51b8f4218f7b6b56d34df22.tar.bz2 linux-dab63eb25ced7539a51b8f4218f7b6b56d34df22.zip | |
extcon: arizona: Use microphone clamp function if available
Newer Arizona devices include a microphone clamp function which is tied to
jack detect. Activate this feature when present in order to ensure best
performance of the subsystem.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'drivers/extcon')
| -rw-r--r-- | drivers/extcon/extcon-arizona.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c index 635b7078ce5e..3ef3bee7d1e6 100644 --- a/drivers/extcon/extcon-arizona.c +++ b/drivers/extcon/extcon-arizona.c @@ -45,6 +45,7 @@ struct arizona_extcon_info { int micd_num_modes; bool micd_reva; + bool micd_clamp; bool mic; bool detecting; @@ -375,6 +376,7 @@ static int arizona_extcon_probe(struct platform_device *pdev) info->micd_reva = true; break; default: + info->micd_clamp = true; break; } break; @@ -423,6 +425,19 @@ static int arizona_extcon_probe(struct platform_device *pdev) arizona->pdata.micd_bias_start_time << ARIZONA_MICD_BIAS_STARTTIME_SHIFT); + /* + * If we have a clamp use it. + */ + if (info->micd_clamp) { + regmap_update_bits(arizona->regmap, + ARIZONA_MICD_CLAMP_CONTROL, + ARIZONA_MICD_CLAMP_MODE_MASK, 4); + regmap_update_bits(arizona->regmap, + ARIZONA_JACK_DETECT_DEBOUNCE, + ARIZONA_MICD_CLAMP_DB, + ARIZONA_MICD_CLAMP_DB); + } + arizona_extcon_set_mode(info, 0); info->input = devm_input_allocate_device(&pdev->dev); @@ -529,6 +544,10 @@ static int arizona_extcon_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); + regmap_update_bits(arizona->regmap, + ARIZONA_MICD_CLAMP_CONTROL, + ARIZONA_MICD_CLAMP_MODE_MASK, 0); + arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0); arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0); arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info); |