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authorMark Brown <broonie@opensource.wolfsonmicro.com>2013-02-07 16:47:40 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-02-11 17:06:22 +0100
commit903aa56fdf930fd17fc4f35610bb1c818b5a9327 (patch)
treef594357b2e234b75076c85cd8d30db0579220d99 /drivers/extcon
parentextcon: arizona: Add some debounce time before starting HPDET identification (diff)
downloadlinux-903aa56fdf930fd17fc4f35610bb1c818b5a9327.tar.xz
linux-903aa56fdf930fd17fc4f35610bb1c818b5a9327.zip
extcon: arizona: Don't HPDET magic when headphones are enabled
The magic is already done as part of enabling the headphone output so does not need to be done when the headphone outputs are enabled. We hold the DAPM lock so the headphone status can't be changed underneath us. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/extcon')
-rw-r--r--drivers/extcon/extcon-arizona.c58
1 files changed, 46 insertions, 12 deletions
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 2ad0e4a35a23..cfd206c4797c 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -489,6 +489,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
struct arizona *arizona = info->arizona;
int id_gpio = arizona->pdata.hpdet_id_gpio;
int report = ARIZONA_CABLE_HEADPHONE;
+ unsigned int val;
int ret, reading;
mutex_lock(&info->lock);
@@ -543,13 +544,28 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data)
dev_err(arizona->dev, "Failed to report HP/line: %d\n",
ret);
- ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to undo magic: %d\n", ret);
+ mutex_lock(&arizona->dapm->card->dapm_mutex);
- ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to undo magic: %d\n", ret);
+ ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val);
+ if (ret != 0) {
+ dev_err(arizona->dev, "Failed to read output enables: %d\n",
+ ret);
+ val = 0;
+ }
+
+ if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) {
+ ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0);
+ if (ret != 0)
+ dev_warn(arizona->dev, "Failed to undo magic: %d\n",
+ ret);
+
+ ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0);
+ if (ret != 0)
+ dev_warn(arizona->dev, "Failed to undo magic: %d\n",
+ ret);
+ }
+
+ mutex_unlock(&arizona->dapm->card->dapm_mutex);
done:
if (id_gpio)
@@ -637,6 +653,7 @@ err:
static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
{
struct arizona *arizona = info->arizona;
+ unsigned int val;
int ret;
dev_dbg(arizona->dev, "Starting identification via HPDET\n");
@@ -648,13 +665,30 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
arizona_extcon_pulse_micbias(info);
- ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0x4000);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
+ mutex_lock(&arizona->dapm->card->dapm_mutex);
- ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0x4000);
- if (ret != 0)
- dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
+ ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val);
+ if (ret != 0) {
+ dev_err(arizona->dev, "Failed to read output enables: %d\n",
+ ret);
+ val = 0;
+ }
+
+ if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) {
+ ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000,
+ 0x4000);
+ if (ret != 0)
+ dev_warn(arizona->dev, "Failed to do magic: %d\n",
+ ret);
+
+ ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000,
+ 0x4000);
+ if (ret != 0)
+ dev_warn(arizona->dev, "Failed to do magic: %d\n",
+ ret);
+ }
+
+ mutex_unlock(&arizona->dapm->card->dapm_mutex);
ret = regmap_update_bits(arizona->regmap,
ARIZONA_ACCESSORY_DETECT_MODE_1,