From d22c8be32f29a57c42fe5be5d528335ad9e95da9 Mon Sep 17 00:00:00 2001
From: sujl <service@t-firefly.com>
Date: Wed, 2 May 2018 15:18:26 +0800
Subject: [PATCH] [AIO-3288C] kernel->sound:add two standard hp detection

---
 kernel/sound/soc/codecs/es8323.c | 68 +++++++++++++++++++++++++++++++-
 1 file changed, 66 insertions(+), 2 deletions(-)

diff --git a/kernel/sound/soc/codecs/es8323.c b/kernel/sound/soc/codecs/es8323.c
index 92a379eeef..d2bd8f1928 100755
--- a/kernel/sound/soc/codecs/es8323.c
+++ b/kernel/sound/soc/codecs/es8323.c
@@ -41,6 +41,16 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 
+#define INVALID_GPIO -1
+#if defined(CONFIG_FIREFLY_RK3288_DEVICE_AIO_3288C)
+#include <linux/iio/iio.h>
+#include <linux/iio/machine.h>
+#include <linux/iio/driver.h>
+#include <linux/iio/consumer.h>
+int es8323_adc_gpio = INVALID_GPIO;
+#endif
+
+
 #if 0
 #define DBG(x...) printk(KERN_INFO x)
 #else
@@ -52,7 +62,6 @@ static int set_spk = 1;                     // add by xhc when insert hdmi 0, no
 #ifdef CONFIG_MACH_RK_FAC 
 int es8323_hdmi_ctrl=0;
 #endif
-#define INVALID_GPIO -1
 int es8323_spk_con_gpio = INVALID_GPIO;
 int es8323_spk_con_gpio_active = 0;
 int es8323_earphone_con_gpio = INVALID_GPIO;
@@ -1273,9 +1282,47 @@ void spk_timer_callback(unsigned long data )
 }
 #endif
 
+#if defined(CONFIG_FIREFLY_RK3288_DEVICE_AIO_3288C)
+#define VREF 1800
+struct iio_channel *chan;
+void hp_jack_adc(unsigned long flags)
+{
+       int ret,raw;
+    chan = iio_channel_get(es8323_codec->dev, NULL);
+    if (IS_ERR(chan))
+    {
+          chan = NULL;
+          printk("%s() have not set adc chan\n", __FUNCTION__);
+          return;
+    }
+    ret = iio_read_channel_raw(chan, &raw); 
+    if (ret < 0) {
+        printk("read hook adc channel() error: %d\n", ret);
+        return;
+    }
+
+       if(es8323_mic_state == 0) {
+               if(flags == 1){
+                       printk("mic use extern\n");
+                       snd_soc_write(es8323_codec, 0x0b,0x82);
+                       if(raw <= 240)
+                               gpio_direction_output(es8323_adc_gpio,1);
+               }else {
+                       printk("mic use intern\n");
+                       snd_soc_write(es8323_codec, 0x0b,0x02);
+                       gpio_direction_output(es8323_adc_gpio,0);
+               }
+        if(line_in_state == 1) spk_detect_do_switch(1);
+       }
+}
+#endif
+
 static int es8323_hp_jack_change(struct notifier_block *nb,
 	unsigned long flags, void *data)
 {
+#if defined(CONFIG_FIREFLY_RK3288_DEVICE_AIO_3288C)
+       hp_jack_adc(flags);
+#else
 	if(es8323_mic_state == 0) {
 		if(flags == 1){
 			printk("mic use extern\n");
@@ -1286,7 +1333,7 @@ static int es8323_hp_jack_change(struct notifier_block *nb,
 		}
         if(line_in_state == 1) spk_detect_do_switch(1);
 	}
-
+#endif
 	return NOTIFY_OK;
 }
 
@@ -1434,6 +1481,9 @@ static int es8323_probe(struct snd_soc_codec *codec)
 static int es8323_remove(struct snd_soc_codec *codec)
 {
 	es8323_set_bias_level(codec, SND_SOC_BIAS_OFF);
+#if defined(CONFIG_FIREFLY_RK3288_DEVICE_AIO_3288C)
+       iio_channel_release(chan);
+#endif
 	return 0;
 }
 
@@ -1739,6 +1789,20 @@ static int es8323_i2c_probe(struct i2c_client *i2c,
 		es8323_hp_det_gpio = INVALID_GPIO;
 	}
 
+ 
+#if defined(CONFIG_FIREFLY_RK3288_DEVICE_AIO_3288C)
+       es8323_adc_gpio = of_get_named_gpio(i2c->dev.of_node, "adc-gpio", 0);
+        if (es8323_adc_gpio < 0) {
+                DBG("%s() Can not read property adc-en-gpio\n", __FUNCTION__);
+                es8323_adc_gpio = INVALID_GPIO;
+        }
+        ret = gpio_request(es8323_adc_gpio, "adc_det");
+        if (ret != 0) {
+                printk("%s request adc_det error", __func__);
+                return ret;
+    }
+#endif
+
 	es8323_line_det_gpio = of_get_named_gpio(i2c->dev.of_node, "line-det-gpio", 0);
 	if (es8323_line_det_gpio < 0) {
 		DBG("%s() Can not read property es8323_line_det_gpio\n", __FUNCTION__);