diff options
| -rw-r--r-- | drivers/extcon/extcon-arizona.c | 64 |
1 files changed, 58 insertions, 6 deletions
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c index 4b9f09cc38d8..f213e14ff93f 100644 --- a/drivers/extcon/extcon-arizona.c +++ b/drivers/extcon/extcon-arizona.c @@ -48,6 +48,10 @@ #define HPDET_DEBOUNCE 500 #define DEFAULT_MICD_TIMEOUT 2000 +#define QUICK_HEADPHONE_MAX_OHM 3 +#define MICROPHONE_MIN_OHM 1257 +#define MICROPHONE_MAX_OHM 30000 + #define MICD_DBTIME_TWO_READINGS 2 #define MICD_DBTIME_FOUR_READINGS 4 @@ -117,12 +121,15 @@ static const struct arizona_micd_range micd_default_ranges[] = { { .max = 430, .key = BTN_5 }, }; +/* The number of levels in arizona_micd_levels valid for button thresholds */ +#define ARIZONA_NUM_MICD_BUTTON_LEVELS 64 + static const int arizona_micd_levels[] = { 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46, 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100, 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245, 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071, - 1257, + 1257, 30000, }; static const unsigned int arizona_cable[] = { @@ -270,6 +277,7 @@ static void arizona_start_mic(struct arizona_extcon_info *info) struct arizona *arizona = info->arizona; bool change; int ret; + unsigned int mode; /* Microphone detection can't use idle mode */ pm_runtime_get(info->dev); @@ -295,9 +303,14 @@ static void arizona_start_mic(struct arizona_extcon_info *info) regmap_write(arizona->regmap, 0x80, 0x0); } + if (info->detecting && arizona->pdata.micd_software_compare) + mode = ARIZONA_ACCDET_MODE_ADC; + else + mode = ARIZONA_ACCDET_MODE_MIC; + regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, - ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC); + ARIZONA_ACCDET_MODE_MASK, mode); arizona_extcon_pulse_micbias(info); @@ -804,6 +817,37 @@ static void arizona_micd_detect(struct work_struct *work) return; } + if (info->detecting && arizona->pdata.micd_software_compare) { + /* Must disable MICD before we read the ADCVAL */ + regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, + ARIZONA_MICD_ENA, 0); + ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_4, &val); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to read MICDET_ADCVAL: %d\n", + ret); + mutex_unlock(&info->lock); + return; + } + + dev_dbg(arizona->dev, "MICDET_ADCVAL: %x\n", val); + + val &= ARIZONA_MICDET_ADCVAL_MASK; + if (val < ARRAY_SIZE(arizona_micd_levels)) + val = arizona_micd_levels[val]; + else + val = INT_MAX; + + if (val <= QUICK_HEADPHONE_MAX_OHM) + val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_0; + else if (val <= MICROPHONE_MIN_OHM) + val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_1; + else if (val <= MICROPHONE_MAX_OHM) + val = ARIZONA_MICD_STS | ARIZONA_MICD_LVL_8; + else + val = ARIZONA_MICD_LVL_8; + } + for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) { ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val); if (ret != 0) { @@ -932,10 +976,17 @@ static void arizona_micd_detect(struct work_struct *work) } handled: - if (info->detecting) + if (info->detecting) { + if (arizona->pdata.micd_software_compare) + regmap_update_bits(arizona->regmap, + ARIZONA_MIC_DETECT_1, + ARIZONA_MICD_ENA, + ARIZONA_MICD_ENA); + queue_delayed_work(system_power_efficient_wq, &info->micd_timeout_work, msecs_to_jiffies(info->micd_timeout)); + } pm_runtime_mark_last_busy(info->dev); mutex_unlock(&info->lock); @@ -1335,7 +1386,8 @@ static int arizona_extcon_probe(struct platform_device *pdev) break; } - BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) != 0x40); + BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) < + ARIZONA_NUM_MICD_BUTTON_LEVELS); if (arizona->pdata.num_micd_ranges) { info->micd_ranges = pdata->micd_ranges; @@ -1368,11 +1420,11 @@ static int arizona_extcon_probe(struct platform_device *pdev) /* Set up all the buttons the user specified */ for (i = 0; i < info->num_micd_ranges; i++) { - for (j = 0; j < ARRAY_SIZE(arizona_micd_levels); j++) + for (j = 0; j < ARIZONA_NUM_MICD_BUTTON_LEVELS; j++) if (arizona_micd_levels[j] >= info->micd_ranges[i].max) break; - if (j == ARRAY_SIZE(arizona_micd_levels)) { + if (j == ARIZONA_NUM_MICD_BUTTON_LEVELS) { dev_err(arizona->dev, "Unsupported MICD level %d\n", info->micd_ranges[i].max); ret = -EINVAL; |