diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index 07122a9ef36e6592812aec1f97b3f830914be361..9377050e5335b11a0ec7adaa2dddcf7b7c6ca127 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 d7e1047ad68e236680b5776547c3c8a2987dfa99..aa724314677a695ee5f0e868d93a2a014e944cd5 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -27,6 +27,8 @@
#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>
@@ -113,6 +115,52 @@ 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;
@@ -122,6 +170,15 @@ 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",
@@ -138,6 +195,8 @@ 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);
@@ -150,18 +209,39 @@ 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);
@@ -564,6 +644,8 @@ static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info)
info->hpdet_active = true;
+ arizona_extcon_pulse_micbias(info);
+
ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, 0x4000);
if (ret != 0)
dev_warn(arizona->dev, "Failed to do magic: %d\n", ret);
@@ -649,6 +731,13 @@ 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;
@@ -716,6 +805,7 @@ 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:
@@ -817,6 +907,9 @@ 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);
diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
index 2f5f08e10b79c5323608f18338908d1cfd95fbbf..f8241753415c74f7329ebcdd11db7516cce19028 100644
--- a/include/linux/mfd/arizona/pdata.h
+++ b/include/linux/mfd/arizona/pdata.h
@@ -117,6 +117,9 @@ struct arizona_pdata {
/** Mic detect debounce level */
int micd_dbtime;
+ /** Force MICBIAS on for mic detect */
+ bool micd_force_micbias;
+
/** Headset polarity configurations */
struct arizona_micd_config *micd_configs;
int num_micd_configs;