[PATCH] extcon: arizona: Declare 3-pole jack if we detect open circuit on mic

[PATCH] extcon: arizona: Declare 3-pole jack if we detect open circuit on mic

[Charles Keepax]

Detecting an open-circuit on the microphone pin, usually means the
headset has a microphone but the cable is faulty. Currently the code
will simply stop detecting and declare nothing in this situation. It is
better to declare this as headphones such that the user can still use
their headset as plain headphones even if the microphone is faulty.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
 drivers/extcon/extcon-arizona.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 4c47eb2..e216a97 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -829,7 +829,10 @@ static void arizona_micd_detect(struct work_struct *work)
 	/* Due to jack detect this should never happen */
 	if (!(val & ARIZONA_MICD_STS)) {
 		dev_warn(arizona->dev, "Detected open circuit\n");
+		info->mic = false;
+		arizona_stop_mic(info);
 		info->detecting = false;
+		arizona_identify_headphone(info);
 		goto handled;
 	}
 
-- 
1.7.2.5

Re: [PATCH] extcon: arizona: Declare 3-pole jack if we detect open circuit on mic

[Chanwoo Choi]

On 06/26/2015 12:47 AM, Charles Keepax wrote:
> Detecting an open-circuit on the microphone pin, usually means the
> headset has a microphone but the cable is faulty. Currently the code
> will simply stop detecting and declare nothing in this situation. It is
> better to declare this as headphones such that the user can still use
> their headset as plain headphones even if the microphone is faulty.
> 
> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
> ---
>  drivers/extcon/extcon-arizona.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
> index 4c47eb2..e216a97 100644
> --- a/drivers/extcon/extcon-arizona.c
> +++ b/drivers/extcon/extcon-arizona.c
> @@ -829,7 +829,10 @@ static void arizona_micd_detect(struct work_struct *work)
>  	/* Due to jack detect this should never happen */
>  	if (!(val & ARIZONA_MICD_STS)) {
>  		dev_warn(arizona->dev, "Detected open circuit\n");
> +		info->mic = false;
> +		arizona_stop_mic(info);
>  		info->detecting = false;
> +		arizona_identify_headphone(info);
>  		goto handled;
>  	}
>  
> 

Applied it.

Thanks,
Chanwoo Choi