extcon: arizona: Add support for headphone detection on wm5110 rev D

wm5110 rev D is the first chip to use headphone detection IP 2, specify
such and make a small correction as the impedance value is actually read
in 0.5 ohm increments now.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 4487bdaf9b43..c20602f601ee 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -435,6 +435,8 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info)
                 }
 
                 val &= ARIZONA_HP_LVL_B_MASK;
+                /* Convert to ohms, the value is in 0.5 ohm increments */
+                val /= 2;
 
                 regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1,
                             &range);
@@ -1147,6 +1149,16 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                         break;
                 }
                 break;
+        case WM5110:
+                switch (arizona->rev) {
+                case 0 ... 2:
+                        break;
+                default:
+                        info->micd_clamp = true;
+                        info->hpdet_ip = 2;
+                        break;
+                }
+                break;
         default:
                 break;
         }