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authorMark Brown <broonie@opensource.wolfsonmicro.com>2013-01-11 00:55:36 +0100
committerChanwoo Choi <cw00.choi@samsung.com>2013-01-15 07:42:17 +0100
commitdab63eb25ced7539a51b8f4218f7b6b56d34df22 (patch)
tree1f97a0380d70d4207b57a2d2987f3ce18ebc9586 /drivers/extcon
parentextcon: arizona: Allow configuration of MICBIAS rise time (diff)
downloadlinux-dab63eb25ced7539a51b8f4218f7b6b56d34df22.tar.xz
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.c19
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);