diff options
Diffstat (limited to 'drivers/extcon')
| -rw-r--r-- | drivers/extcon/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/extcon/extcon-arizona.c | 240 |
2 files changed, 204 insertions, 38 deletions
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index 10df3fa3db6..5168a1324a6 100644 --- a/drivers/extcon/Kconfig +++ b/drivers/extcon/Kconfig @@ -47,7 +47,7 @@ config EXTCON_MAX8997 config EXTCON_ARIZONA tristate "Wolfson Arizona EXTCON support" - depends on MFD_ARIZONA && INPUT + depends on MFD_ARIZONA && INPUT && SND_SOC help Say Y here to enable support for external accessory detection with Wolfson Arizona devices. These are audio CODECs with diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c index de141f72c8e..dc357a4051f 100644 --- a/drivers/extcon/extcon-arizona.c +++ b/drivers/extcon/extcon-arizona.c @@ -27,12 +27,12 @@ #include <linux/regulator/consumer.h> #include <linux/extcon.h> +#include <sound/soc.h> + #include <linux/mfd/arizona/core.h> #include <linux/mfd/arizona/pdata.h> #include <linux/mfd/arizona/registers.h> -#define ARIZONA_DEFAULT_HP 32 - #define ARIZONA_NUM_BUTTONS 6 #define ARIZONA_ACCDET_MODE_MIC 0 @@ -53,7 +53,10 @@ struct arizona_extcon_info { bool micd_reva; bool micd_clamp; + struct delayed_work hpdet_work; + bool hpdet_active; + bool hpdet_done; int num_hpdet_res; unsigned int hpdet_res[3]; @@ -115,6 +118,52 @@ static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode) dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode); } +static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info) +{ + switch (info->micd_modes[0].bias >> ARIZONA_MICD_BIAS_SRC_SHIFT) { + case 1: + return "MICBIAS1"; + case 2: + return "MICBIAS2"; + case 3: + return "MICBIAS3"; + default: + return "MICVDD"; + } +} + +static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info) +{ + struct arizona *arizona = info->arizona; + const char *widget = arizona_extcon_get_micbias(info); + struct snd_soc_dapm_context *dapm = arizona->dapm; + int ret; + + mutex_lock(&dapm->card->dapm_mutex); + + ret = snd_soc_dapm_force_enable_pin(dapm, widget); + if (ret != 0) + dev_warn(arizona->dev, "Failed to enable %s: %d\n", + widget, ret); + + mutex_unlock(&dapm->card->dapm_mutex); + + snd_soc_dapm_sync(dapm); + + if (!arizona->pdata.micd_force_micbias) { + mutex_lock(&dapm->card->dapm_mutex); + + ret = snd_soc_dapm_disable_pin(arizona->dapm, widget); + if (ret != 0) + dev_warn(arizona->dev, "Failed to disable %s: %d\n", + widget, ret); + + mutex_unlock(&dapm->card->dapm_mutex); + + snd_soc_dapm_sync(dapm); + } +} + static void arizona_start_mic(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; @@ -124,6 +173,15 @@ static void arizona_start_mic(struct arizona_extcon_info *info) /* Microphone detection can't use idle mode */ pm_runtime_get(info->dev); + if (info->detecting) { + ret = regulator_allow_bypass(info->micvdd, false); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to regulate MICVDD: %d\n", + ret); + } + } + ret = regulator_enable(info->micvdd); if (ret != 0) { dev_err(arizona->dev, "Failed to enable MICVDD: %d\n", @@ -140,6 +198,8 @@ static void arizona_start_mic(struct arizona_extcon_info *info) ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC); + arizona_extcon_pulse_micbias(info); + regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_ENA, ARIZONA_MICD_ENA, &change); @@ -152,18 +212,39 @@ static void arizona_start_mic(struct arizona_extcon_info *info) static void arizona_stop_mic(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; + const char *widget = arizona_extcon_get_micbias(info); + struct snd_soc_dapm_context *dapm = arizona->dapm; bool change; + int ret; regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_ENA, 0, &change); + mutex_lock(&dapm->card->dapm_mutex); + + ret = snd_soc_dapm_disable_pin(dapm, widget); + if (ret != 0) + dev_warn(arizona->dev, + "Failed to disable %s: %d\n", + widget, ret); + + mutex_unlock(&dapm->card->dapm_mutex); + + snd_soc_dapm_sync(dapm); + if (info->micd_reva) { regmap_write(arizona->regmap, 0x80, 0x3); regmap_write(arizona->regmap, 0x294, 2); regmap_write(arizona->regmap, 0x80, 0x0); } + ret = regulator_allow_bypass(info->micvdd, true); + if (ret != 0) { + dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n", + ret); + } + if (change) { regulator_disable(info->micvdd); pm_runtime_mark_last_busy(info->dev); @@ -208,7 +289,7 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info) if (!(val & ARIZONA_HP_DONE)) { dev_err(arizona->dev, "HPDET did not complete: %x\n", val); - val = ARIZONA_DEFAULT_HP; + return -EAGAIN; } val &= ARIZONA_HP_LVL_MASK; @@ -218,14 +299,14 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info) if (!(val & ARIZONA_HP_DONE_B)) { dev_err(arizona->dev, "HPDET did not complete: %x\n", val); - return ARIZONA_DEFAULT_HP; + return -EAGAIN; } ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val); if (ret != 0) { dev_err(arizona->dev, "Failed to read HP value: %d\n", ret); - return ARIZONA_DEFAULT_HP; + return -EAGAIN; } regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, @@ -267,7 +348,7 @@ static int arizona_hpdet_read(struct arizona_extcon_info *info) if (!(val & ARIZONA_HP_DONE_B)) { dev_err(arizona->dev, "HPDET did not complete: %x\n", val); - return ARIZONA_DEFAULT_HP; + return -EAGAIN; } val &= ARIZONA_HP_LVL_B_MASK; @@ -314,7 +395,6 @@ static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading) { struct arizona *arizona = info->arizona; int id_gpio = arizona->pdata.hpdet_id_gpio; - int ret; /* * If we're using HPDET for accessory identification we need @@ -371,6 +451,10 @@ static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading) info->hpdet_res[0], info->hpdet_res[1], info->hpdet_res[2]); + + /* Take the headphone impedance for the main report */ + *reading = info->hpdet_res[0]; + /* * Either the two grounds measure differently or we * measure the mic as high impedance. @@ -379,16 +463,7 @@ static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading) (id_gpio && info->hpdet_res[2] > 10)) { dev_dbg(arizona->dev, "Detected mic\n"); info->mic = true; - ret = extcon_set_cable_state_(&info->edev, - ARIZONA_CABLE_MICROPHONE, - true); - if (ret != 0) { - dev_err(arizona->dev, - "Failed to report mic: %d\n", ret); - } - - /* Take the headphone impedance for the main report */ - *reading = info->hpdet_res[1]; + info->detecting = true; } else { dev_dbg(arizona->dev, "Detected headphone\n"); } @@ -409,6 +484,7 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) struct arizona *arizona = info->arizona; int id_gpio = arizona->pdata.hpdet_id_gpio; int report = ARIZONA_CABLE_HEADPHONE; + unsigned int val; int ret, reading; mutex_lock(&info->lock); @@ -463,13 +539,28 @@ static irqreturn_t arizona_hpdet_irq(int irq, void *data) dev_err(arizona->dev, "Failed to report HP/line: %d\n", ret); - ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0); - if (ret != 0) - dev_warn(arizona->dev, "Failed to undo magic: %d\n", ret); + mutex_lock(&arizona->dapm->card->dapm_mutex); - ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0); - if (ret != 0) - dev_warn(arizona->dev, "Failed to undo magic: %d\n", ret); + ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val); + if (ret != 0) { + dev_err(arizona->dev, "Failed to read output enables: %d\n", + ret); + val = 0; + } + + if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) { + ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0); + if (ret != 0) + dev_warn(arizona->dev, "Failed to undo magic: %d\n", + ret); + + ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0); + if (ret != 0) + dev_warn(arizona->dev, "Failed to undo magic: %d\n", + ret); + } + + mutex_unlock(&arizona->dapm->card->dapm_mutex); done: if (id_gpio) @@ -489,6 +580,8 @@ done: info->hpdet_active = false; } + info->hpdet_done = true; + out: mutex_unlock(&info->lock); @@ -500,6 +593,9 @@ static void arizona_identify_headphone(struct arizona_extcon_info *info) struct arizona *arizona = info->arizona; int ret; + if (info->hpdet_done) + return; + dev_dbg(arizona->dev, "Starting HPDET\n"); /* Make sure we keep the device enabled during the measurement */ @@ -557,22 +653,42 @@ err: static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; + unsigned int val; int ret; dev_dbg(arizona->dev, "Starting identification via HPDET\n"); /* Make sure we keep the device enabled during the measurement */ - pm_runtime_get(info->dev); + pm_runtime_get_sync(info->dev); info->hpdet_active = true; - ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0x4000); - if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", ret); + arizona_extcon_pulse_micbias(info); - ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, 0x4000); - if (ret != 0) - dev_warn(arizona->dev, "Failed to do magic: %d\n", ret); + mutex_lock(&arizona->dapm->card->dapm_mutex); + + ret = regmap_read(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, &val); + if (ret != 0) { + dev_err(arizona->dev, "Failed to read output enables: %d\n", + ret); + val = 0; + } + + if (!(val & (ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA))) { + ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, + 0x4000); + if (ret != 0) + dev_warn(arizona->dev, "Failed to do magic: %d\n", + ret); + + ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, + 0x4000); + if (ret != 0) + dev_warn(arizona->dev, "Failed to do magic: %d\n", + ret); + } + + mutex_unlock(&arizona->dapm->card->dapm_mutex); ret = regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, @@ -651,6 +767,13 @@ static irqreturn_t arizona_micdet(int irq, void *data) dev_err(arizona->dev, "Headset report failed: %d\n", ret); + /* Don't need to regulate for button detection */ + ret = regulator_allow_bypass(info->micvdd, false); + if (ret != 0) { + dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n", + ret); + } + info->mic = true; info->detecting = false; goto handled; @@ -663,8 +786,6 @@ static irqreturn_t arizona_micdet(int irq, void *data) * impedence then give up and report headphones. */ if (info->detecting && (val & 0x3f8)) { - info->jack_flips++; - if (info->jack_flips >= info->micd_num_modes) { dev_dbg(arizona->dev, "Detected HP/line\n"); arizona_identify_headphone(info); @@ -718,6 +839,7 @@ static irqreturn_t arizona_micdet(int irq, void *data) input_report_key(info->input, arizona_lvl_to_key[i].report, 0); input_sync(info->input); + arizona_extcon_pulse_micbias(info); } handled: @@ -727,6 +849,17 @@ handled: return IRQ_HANDLED; } +static void arizona_hpdet_work(struct work_struct *work) +{ + struct arizona_extcon_info *info = container_of(work, + struct arizona_extcon_info, + hpdet_work.work); + + mutex_lock(&info->lock); + arizona_start_hpdet_acc_id(info); + mutex_unlock(&info->lock); +} + static irqreturn_t arizona_jackdet(int irq, void *data) { struct arizona_extcon_info *info = data; @@ -736,6 +869,8 @@ static irqreturn_t arizona_jackdet(int irq, void *data) pm_runtime_get_sync(info->dev); + cancel_delayed_work_sync(&info->hpdet_work); + mutex_lock(&info->lock); if (arizona->pdata.jd_gpio5) { @@ -771,8 +906,13 @@ static irqreturn_t arizona_jackdet(int irq, void *data) arizona_start_mic(info); } else { - arizona_start_hpdet_acc_id(info); + schedule_delayed_work(&info->hpdet_work, + msecs_to_jiffies(250)); } + + regmap_update_bits(arizona->regmap, + ARIZONA_JACK_DETECT_DEBOUNCE, + ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB, 0); } else { dev_dbg(arizona->dev, "Detected jack removal\n"); @@ -782,6 +922,7 @@ static irqreturn_t arizona_jackdet(int irq, void *data) for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++) info->hpdet_res[i] = 0; info->mic = false; + info->hpdet_done = false; for (i = 0; i < ARIZONA_NUM_BUTTONS; i++) input_report_key(info->input, @@ -792,8 +933,20 @@ static irqreturn_t arizona_jackdet(int irq, void *data) if (ret != 0) dev_err(arizona->dev, "Removal report failed: %d\n", ret); + + regmap_update_bits(arizona->regmap, + ARIZONA_JACK_DETECT_DEBOUNCE, + ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB, + ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB); } + /* Clear trig_sts to make sure DCVDD is not forced up */ + regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG, + ARIZONA_MICD_CLAMP_FALL_TRIG_STS | + ARIZONA_MICD_CLAMP_RISE_TRIG_STS | + ARIZONA_JD1_FALL_TRIG_STS | + ARIZONA_JD1_RISE_TRIG_STS); + mutex_unlock(&info->lock); pm_runtime_mark_last_busy(info->dev); @@ -810,6 +963,9 @@ static int arizona_extcon_probe(struct platform_device *pdev) int jack_irq_fall, jack_irq_rise; int ret, mode, i; + if (!arizona->dapm || !arizona->dapm->card) + return -EPROBE_DEFER; + pdata = dev_get_platdata(arizona->dev); info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); @@ -829,6 +985,7 @@ static int arizona_extcon_probe(struct platform_device *pdev) mutex_init(&info->lock); info->arizona = arizona; info->dev = &pdev->dev; + INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work); platform_set_drvdata(pdev, info); switch (arizona->type) { @@ -900,6 +1057,18 @@ static int arizona_extcon_probe(struct platform_device *pdev) arizona->pdata.micd_bias_start_time << ARIZONA_MICD_BIAS_STARTTIME_SHIFT); + if (arizona->pdata.micd_rate) + regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, + ARIZONA_MICD_RATE_MASK, + arizona->pdata.micd_rate + << ARIZONA_MICD_RATE_SHIFT); + + if (arizona->pdata.micd_dbtime) + regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, + ARIZONA_MICD_DBTIME_MASK, + arizona->pdata.micd_dbtime + << ARIZONA_MICD_DBTIME_SHIFT); + /* * If we have a clamp use it, activating in conjunction with * GPIO5 if that is connected for jack detect operation. @@ -996,10 +1165,6 @@ static int arizona_extcon_probe(struct platform_device *pdev) goto err_micdet; } - regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, - ARIZONA_MICD_RATE_MASK, - 8 << ARIZONA_MICD_RATE_SHIFT); - arizona_clk32k_enable(arizona); regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE, ARIZONA_JD1_DB, ARIZONA_JD1_DB); @@ -1067,6 +1232,7 @@ static int arizona_extcon_remove(struct platform_device *pdev) arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info); arizona_free_irq(arizona, jack_irq_rise, info); arizona_free_irq(arizona, jack_irq_fall, info); + cancel_delayed_work_sync(&info->hpdet_work); regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, ARIZONA_JD1_ENA, 0); arizona_clk32k_disable(arizona); |