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>
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@ -43,6 +43,9 @@
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#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9
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#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb
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#define ARIZONA_TST_CAP_DEFAULT 0x3
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#define ARIZONA_TST_CAP_CLAMP 0x1
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#define ARIZONA_HPDET_MAX 10000
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#define HPDET_DEBOUNCE 500
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@ -147,6 +150,7 @@ static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
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{
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struct arizona *arizona = info->arizona;
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unsigned int mask = 0, val = 0;
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unsigned int cap_sel = 0;
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int ret;
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switch (arizona->type) {
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@ -154,10 +158,21 @@ static void arizona_extcon_hp_clamp(struct arizona_extcon_info *info,
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case WM8280:
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mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR |
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ARIZONA_HP1L_SHRTI;
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if (clamp)
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if (clamp) {
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val = ARIZONA_HP1L_SHRTO;
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else
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cap_sel = ARIZONA_TST_CAP_CLAMP;
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} else {
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val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI;
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cap_sel = ARIZONA_TST_CAP_DEFAULT;
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}
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ret = regmap_update_bits(arizona->regmap,
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ARIZONA_HP_TEST_CTRL_1,
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ARIZONA_HP1_TST_CAP_SEL_MASK,
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cap_sel);
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if (ret != 0)
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dev_warn(arizona->dev,
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"Failed to set TST_CAP_SEL: %d\n", ret);
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break;
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default:
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mask = ARIZONA_RMV_SHRT_HP1L;
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