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extcon: arizona: Additional settings to improve accuracy of HP detect 

If the TST_CAP_SEL bits aren't set correctly on wm5110/8280 there will
be a 100k load along side the headphones, which will affect the accurary
towards the very top of the detection range. This patch sets those bits.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
hifive-unleashed-5.1
Charles Keepax 2015-09-16 10:42:18 +01:00 committed by Chanwoo Choi
parent 6772a5ab4f
commit f719ae3311
1 changed files with 17 additions and 2 deletions
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19
drivers/extcon/extcon-arizona.c
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@ -43,6 +43,9 @@
#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
#define ARIZONA_TST_CAP_DEFAULT 0x3
#define ARIZONA_TST_CAP_CLAMP 0x1
#define ARIZONA_HPDET_MAX 10000
#define HPDET_DEBOUNCE 500
@ -147,6 +150,7 @@ static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
{
struct arizona *arizona = info->arizona;
unsigned int mask = 0, val = 0;
unsigned int cap_sel = 0;
int ret;
switch (arizona->type) {
@ -154,10 +158,21 @@ static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
case WM8280:
mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
ARIZONA_HP1L_SHRTI;
if (clamp)
if (clamp) {
val = ARIZONA_HP1L_SHRTO;
else
cap_sel = ARIZONA_TST_CAP_CLAMP;
} else {
val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
cap_sel = ARIZONA_TST_CAP_DEFAULT;
}
ret = regmap_update_bits(arizona->regmap,
ARIZONA_HP_TEST_CTRL_1,
ARIZONA_HP1_TST_CAP_SEL_MASK,
cap_sel);
if (ret != 0)
dev_warn(arizona->dev,
"Failed to set TST_CAP_SEL: %d\n", ret);
break;
default:
mask = ARIZONA_RMV_SHRT_HP1L;