Enable long press to answer incoming call, fix TZSP-5507.

call mfld_jack_status_set to set "earkey_online" node:
1. SND_JACK_BTN_0 means long press detected, will set the node to non-zero((SND_JACK_HEADSET | SND_JACK_BTN_0) here);
2. SND_JACK_BTN_1 means long press released(either short press or long press to release), will set the node to zero, and enable another long press later.

diff --git a/sound/soc/mid-x86/mfld_machine.c b/sound/soc/mid-x86/mfld_machine.c
index ada89a0..1e2d6fc 100644 (file)
--- a/sound/soc/mid-x86/mfld_machine.c
+++ b/sound/soc/mid-x86/mfld_machine.c
@@ -80,7 +80,7 @@ static void mfld_jack_disable_mic_bias(struct snd_soc_codec *codec)
 
 static void mfld_jack_status_set(int jack)
 {
-       if (jack < SND_JACK_BTN_0) {
+       if (jack < SND_JACK_BTN_5) {
                /* JACK */
                switch (jack) {
                case SND_JACK_NONE:
@@ -99,11 +99,14 @@ static void mfld_jack_status_set(int jack)
                jack_event_handler(JACK_UEVENT_NAME, jack);
        } else {
                /* JACK Key */
-               switch (jack) {
+               switch (jack & ~(SND_JACK_HEADSET)) {
                case SND_JACK_BTN_0:
                        pr_debug("EAR_SEND_END is pressed\n");
                        break;
                case SND_JACK_BTN_1:
+                        jack_event_handler(JACK_KEY_UEVENT_NAME, 0);/*reset to 0 after that, to enable another long press later.*/
+                        pr_debug("long press released, reset the key to 0.\n");
+                        return;
                case SND_JACK_BTN_2:
                default:
                        pr_debug("The key is unknown\n");
@@ -201,6 +204,10 @@ void mfld_jack_wq(struct work_struct *work)
                        ctx->mfld_jack_lp_flag = 0;
                        pr_debug("short press on releasing long press, "
                                   "report button release\n");
+#ifdef CONFIG_JACK_MON
+                        /*need reset the status, to enable another long press later*/
+                        mfld_jack_status_set(SND_JACK_HEADSET | SND_JACK_BTN_1);
+#endif
                        return;
                } else {
                        status = SND_JACK_HEADSET | SND_JACK_BTN_0;
@@ -223,6 +230,10 @@ void mfld_jack_wq(struct work_struct *work)
                                                SND_JACK_HEADSET, mask);
                                ctx->mfld_jack_lp_flag = 0;
                                pr_debug("button released after long press\n");
+#ifdef CONFIG_JACK_MON
+                                /*need reset the status, to enable another long press later*/
+                                mfld_jack_status_set(SND_JACK_HEADSET | SND_JACK_BTN_1);
+#endif
                        }
                        return;
                }