abox_edge: Add wired headset support in 88pm88x-headset.
Add switch classs hook in 88pm88x-headset driver so that the headset
information can be read from /sys/class/switch/h2w/.
BUG=26071627
Change-Id: Iec7626bfb9cb0a617a38591cd3508366bd1fabc8
diff --git a/sound/soc/codecs/88pm88x-headset.c b/sound/soc/codecs/88pm88x-headset.c
index 62398a1..92a9017 100644
--- a/sound/soc/codecs/88pm88x-headset.c
+++ b/sound/soc/codecs/88pm88x-headset.c
@@ -20,6 +20,7 @@
#include <linux/uaccess.h>
#include <linux/of.h>
#include <linux/mutex.h>
+#include <linux/switch.h>
#include <linux/mfd/88pm88x.h>
#include <linux/mfd/88pm886.h>
@@ -65,6 +66,10 @@
#define MIC_DET_DBS_32MS (3 << 1)
#define MIC_DET_PRD_CTN (3 << 3)
+struct headset_switch_data {
+ struct switch_dev sdev;
+};
+
struct pm886_hs_info {
struct pm88x_chip *chip;
struct device *dev;
@@ -355,7 +360,7 @@
PM886_MIC_INT_EN,
PM886_MIC_INT_EN);
- dev_err(info->dev, "fake hook interupt\n");
+ dev_dbg(info->dev, "fake hook interupt\n");
}
static void check_headset_short(struct pm886_hs_info *info)
@@ -444,6 +449,7 @@
mic_set_volt_micbias(info->mic_bias_volt, info);
snd_soc_jack_report(info->hs_jack, report, SND_JACK_HEADSET);
+ switch_set_state(&info->psw_data_headset->sdev, report);
dev_dbg(info->dev, "hs status: %d\n", report);
/* enable hook irq if headset is present */
@@ -602,6 +608,11 @@
hs_info->chip = chip;
hs_info->mic_bias = regulator_get(&pdev->dev, "marvell,micbias");
+ hs_info->psw_data_headset =
+ devm_kzalloc(&pdev->dev, sizeof(struct headset_switch_data),
+ GFP_KERNEL);
+ if (!hs_info->psw_data_headset)
+ return -ENOMEM;
if (IS_ERR(hs_info->mic_bias)) {
hs_info->mic_bias = NULL;
@@ -722,12 +733,15 @@
device_init_wakeup(&pdev->dev, 1);
- if (ret < 0)
- return ret;
-
headset_detect = pm886_headset_detect;
hook_detect = pm886_hook_detect;
+ hs_info->psw_data_headset->sdev.name = "h2w";
+ ret = switch_dev_register(&hs_info->psw_data_headset->sdev);
+ if (ret < 0)
+ dev_err(&pdev->dev, "Failed to register switch %s\n",
+ hs_info->psw_data_headset->sdev.name);
+
return 0;
err_out:
@@ -745,6 +759,7 @@
cancel_work_sync(&hs_info->work_release);
cancel_work_sync(&hs_info->work_init);
+ switch_dev_unregister(&hs_info->psw_data_headset->sdev);
devm_kfree(&pdev->dev, hs_info);
return 0;
