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-rw-r--r--drivers/extcon/extcon-arizona.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index ed78b7c26627..e2d78cd7030d 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -51,6 +51,9 @@
#define HPDET_DEBOUNCE 500
#define DEFAULT_MICD_TIMEOUT 2000
+#define ARIZONA_HPDET_WAIT_COUNT 15
+#define ARIZONA_HPDET_WAIT_DELAY_MS 20
+
#define QUICK_HEADPHONE_MAX_OHM 3
#define MICROPHONE_MIN_OHM 1257
#define MICROPHONE_MAX_OHM 30000
@@ -1049,6 +1052,40 @@ static void arizona_hpdet_work(struct work_struct *work)
mutex_unlock(&info->lock);
}
+static int arizona_hpdet_wait(struct arizona_extcon_info *info)
+{
+ struct arizona *arizona = info->arizona;
+ unsigned int val;
+ int i, ret;
+
+ for (i = 0; i < ARIZONA_HPDET_WAIT_COUNT; i++) {
+ ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2,
+ &val);
+ if (ret) {
+ dev_err(arizona->dev,
+ "Failed to read HPDET state: %d\n", ret);
+ return ret;
+ }
+
+ switch (info->hpdet_ip_version) {
+ case 0:
+ if (val & ARIZONA_HP_DONE)
+ return 0;
+ break;
+ default:
+ if (val & ARIZONA_HP_DONE_B)
+ return 0;
+ break;
+ }
+
+ msleep(ARIZONA_HPDET_WAIT_DELAY_MS);
+ }
+
+ dev_warn(arizona->dev, "HPDET did not appear to complete\n");
+
+ return -ETIMEDOUT;
+}
+
static irqreturn_t arizona_jackdet(int irq, void *data)
{
struct arizona_extcon_info *info = data;
@@ -1155,6 +1192,15 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
"Removal report failed: %d\n", ret);
}
+ /*
+ * If the jack was removed during a headphone detection we
+ * need to wait for the headphone detection to finish, as
+ * it can not be aborted. We don't want to be able to start
+ * a new headphone detection from a fresh insert until this
+ * one is finished.
+ */
+ arizona_hpdet_wait(info);
+
regmap_update_bits(arizona->regmap,
ARIZONA_JACK_DETECT_DEBOUNCE,
ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB,