intel_sst: rework jack implementation

This patch fixes the below issues w.r.t jack implementation

a) The current jack implementation in driver is implemented
   in intelmid.c. It has moved to vendor files for better managebility
b) Cleaned up jack reporting per upstream comments
c) Implemented jack for msic, added code to read adc and deduce jack
   type based on mic bias
d) Support detection of american headset

Signed-off-by: Dharageswari R <dharageswari.r@intel.com>
Signed-off-by: Ramesh Babu K V <ramesh.babu@intel.com>
[Corrections]
Signed-off-by: Lu Guanqun <guanqun.lu@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 131 insertions, 11 deletions

diff --git a/drivers/staging/intel_sst/intelmid_v1_control.c b/drivers/staging/intel_sst/intelmid_v1_control.c
index 3392f08..05467ca 100644
--- a/drivers/staging/intel_sst/intelmid_v1_control.c
+++ b/drivers/staging/intel_sst/intelmid_v1_control.c
@@ -31,7 +31,6 @@
 #include <linux/file.h>
 #include <asm/mrst.h>
 #include <sound/pcm.h>
-#include "jack.h"
 #include <sound/pcm_params.h>
 #include <sound/control.h>
 #include <sound/initval.h>
@@ -584,10 +583,6 @@ static int mx_set_selected_input_dev(u8 dev_id)
 	}
 	return sst_sc_reg_access(sc_access, PMIC_WRITE, num_reg);
 }
-static int mx_set_selected_lineout_dev(u8 dev_id)
-{
-	return 0;
-}
 
 static int mx_set_mute(int dev_id, u8 value)
 {
@@ -835,10 +830,132 @@ static int mx_get_vol(int dev_id, int *value)
 	return retval;
 }
 
+static u8 mx_get_jack_status(void)
+{
+	struct sc_reg_access sc_access_read = {0,};
+
+	sc_access_read.reg_addr = 0x201;
+	sst_sc_reg_access(&sc_access_read, PMIC_READ, 1);
+	pr_debug("value returned = 0x%x\n", sc_access_read.value);
+	return sc_access_read.value;
+}
+
+static void mx_pmic_irq_enable(void *data)
+{
+	struct snd_intelmad *intelmaddata = data;
+
+	intelmaddata->jack_prev_state = 0xc0;
+	return;
+}
+
+static void mx_pmic_irq_cb(void *cb_data, u8 intsts)
+{
+	u8 jack_cur_status, jack_prev_state = 0;
+	struct mad_jack *mjack = NULL;
+	unsigned int present = 0, jack_event_flag = 0, buttonpressflag = 0;
+	time_t  timediff;
+	struct snd_intelmad *intelmaddata = cb_data;
+
+	mjack = &intelmaddata->jack[0];
+	if (intsts & 0x2) {
+		jack_cur_status = mx_get_jack_status();
+		jack_prev_state = intelmaddata->jack_prev_state;
+		if ((jack_prev_state == 0xc0) && (jack_cur_status == 0x40)) {
+			/*headset insert detected. */
+			pr_debug("MAD headset inserted\n");
+			present = 1;
+			jack_event_flag = 1;
+			mjack->jack_status = 1;
+			mjack->jack.type = SND_JACK_HEADSET;
+		}
+
+		if ((jack_prev_state == 0xc0) && (jack_cur_status == 0x00)) {
+			/* headphone insert detected. */
+			pr_debug("MAD headphone inserted\n");
+			present = 1;
+			jack_event_flag = 1;
+			mjack->jack.type = SND_JACK_HEADPHONE;
+		}
+
+		if ((jack_prev_state == 0x40) && (jack_cur_status == 0xc0)) {
+			/* headset remove detected. */
+			pr_debug("MAD headset removed\n");
+
+			present = 0;
+			jack_event_flag = 1;
+			mjack->jack_status = 0;
+			mjack->jack.type = SND_JACK_HEADSET;
+		}
+
+		if ((jack_prev_state == 0x00) && (jack_cur_status == 0xc0)) {
+			/* headphone remove detected. */
+			pr_debug("MAD headphone removed\n");
+			present = 0;
+			jack_event_flag = 1;
+			mjack->jack.type = SND_JACK_HEADPHONE;
+		}
+
+		if ((jack_prev_state == 0x40) && (jack_cur_status == 0x00)) {
+			/* button pressed */
+			do_gettimeofday(&mjack->buttonpressed);
+			pr_debug("MAD button press detected\n");
+		}
+
+		if ((jack_prev_state == 0x00) && (jack_cur_status == 0x40)) {
+			if (mjack->jack_status) {
+				/*button pressed */
+				do_gettimeofday(
+					&mjack->buttonreleased);
+				/*button pressed */
+				pr_debug("MAD Button Released detected\n");
+				timediff = mjack->buttonreleased.tv_sec -
+					mjack->buttonpressed.tv_sec;
+				buttonpressflag = 1;
+
+				if (timediff > 1) {
+					pr_debug("MAD long press dtd\n");
+					/* send headphone detect/undetect */
+					present = 1;
+					jack_event_flag = 1;
+					mjack->jack.type =
+							MID_JACK_HS_LONG_PRESS;
+				} else {
+					pr_debug("MAD short press dtd\n");
+					/* send headphone detect/undetect */
+					present = 1;
+					jack_event_flag = 1;
+					mjack->jack.type =
+						MID_JACK_HS_SHORT_PRESS;
+				}
+			} else {
+				/***workaround for maxim
+				hw issue,0x00 t 0x40 is not
+				a valid transiton for Headset insertion */
+				/*headset insert detected. */
+				pr_debug("MAD headset inserted\n");
+				present = 1;
+				jack_event_flag = 1;
+				mjack->jack_status = 1;
+				mjack->jack.type = SND_JACK_HEADSET;
+			}
+		}
+		intelmaddata->jack_prev_state  = jack_cur_status;
+		pr_debug("mx_pmic_irq_cb prv_state= 0x%x\n",
+					intelmaddata->jack_prev_state);
+	}
+
+	if (jack_event_flag)
+		sst_mad_send_jack_report(&mjack->jack,
+						buttonpressflag, present);
+}
+static int mx_jack_enable(void)
+{
+	return 0;
+}
+
 struct snd_pmic_ops snd_pmic_ops_mx = {
 	.set_input_dev = mx_set_selected_input_dev,
 	.set_output_dev = mx_set_selected_output_dev,
-	.set_lineout_dev = mx_set_selected_lineout_dev,
 	.set_mute = mx_set_mute,
 	.get_mute = mx_get_mute,
 	.set_vol = mx_set_vol,
@@ -848,10 +965,13 @@ struct snd_pmic_ops snd_pmic_ops_mx = {
 	.set_pcm_voice_params = mx_set_pcm_voice_params,
 	.set_voice_port = mx_set_voice_port,
 	.set_audio_port = mx_set_audio_port,
-	.power_up_pmic_pb = mx_power_up_pb,
-	.power_up_pmic_cp = mx_power_up_cp,
-	.power_down_pmic_pb = mx_power_down_pb,
-	.power_down_pmic_cp = mx_power_down_cp,
-	.power_down_pmic =  mx_power_down,
+	.power_up_pmic_pb =	mx_power_up_pb,
+	.power_up_pmic_cp =	mx_power_up_cp,
+	.power_down_pmic_pb =	mx_power_down_pb,
+	.power_down_pmic_cp =	mx_power_down_cp,
+	.power_down_pmic =	mx_power_down,
+	.pmic_irq_cb	 =	mx_pmic_irq_cb,
+	.pmic_irq_enable =	mx_pmic_irq_enable,
+	.pmic_jack_enable =	mx_jack_enable,
 };