+static void arizona_micsupp_check_cp(struct work_struct *work)
+{
+ struct arizona_micsupp *micsupp =
+ container_of(work, struct arizona_micsupp, check_cp_work);
+ struct snd_soc_dapm_context *dapm = micsupp->arizona->dapm;
+ struct arizona *arizona = micsupp->arizona;
+ struct regmap *regmap = arizona->regmap;
+ unsigned int reg;
+ int ret;
+
+ ret = regmap_read(regmap, ARIZONA_MIC_CHARGE_PUMP_1, ®);
+ if (ret != 0) {
+ dev_err(arizona->dev, "Failed to read CP state: %d\n", ret);
+ return;
+ }
+
+ if (dapm) {
+ if ((reg & (ARIZONA_CPMIC_ENA | ARIZONA_CPMIC_BYPASS)) ==
+ ARIZONA_CPMIC_ENA)
+ snd_soc_dapm_force_enable_pin(dapm, "MICSUPP");
+ else
+ snd_soc_dapm_disable_pin(dapm, "MICSUPP");
+
+ snd_soc_dapm_sync(dapm);
+ }
+}
+
+static int arizona_micsupp_enable(struct regulator_dev *rdev)
+{
+ struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
+ int ret;
+
+ ret = regulator_enable_regmap(rdev);
+
+ if (ret == 0)
+ schedule_work(&micsupp->check_cp_work);
+
+ return ret;
+}
+
+static int arizona_micsupp_disable(struct regulator_dev *rdev)
+{
+ struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
+ int ret;
+
+ ret = regulator_disable_regmap(rdev);
+ if (ret == 0)
+ schedule_work(&micsupp->check_cp_work);
+
+ return ret;
+}
+
+static int arizona_micsupp_set_bypass(struct regulator_dev *rdev, bool ena)
+{
+ struct arizona_micsupp *micsupp = rdev_get_drvdata(rdev);
+ int ret;
+
+ ret = regulator_set_bypass_regmap(rdev, ena);
+ if (ret == 0)
+ schedule_work(&micsupp->check_cp_work);
+
+ return ret;
+}
+