[PATCH RESEND 1/5] mfd: arizona: Add registers for ADC microphone detection

[Charles Keepax <ckeepax@opensource.wolfsonmicro.com>]

The newer devices support using a software comparison to determine
whether a 3/4 pole jack is present. Add the registers necessary for
this.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---

Hi,

The first two MFD patches and the two extcon patches need to
go through together as there are build dependencies. However
the last documentation update can be treated seperately.

The patches are based of the extcon/extcon-next tree because
that is where most of the changes are but let me know if an
MFD based version would be preferred.

Thanks,
Charles

 drivers/mfd/wm5110-tables.c           |    2 ++
 include/dt-bindings/mfd/arizona.h     |    2 ++
 include/linux/mfd/arizona/pdata.h     |    3 +++
 include/linux/mfd/arizona/registers.h |   17 ++++++++++++++---
 4 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/wm5110-tables.c b/drivers/mfd/wm5110-tables.c
index 12cad94..dd27872 100644
--- a/drivers/mfd/wm5110-tables.c
+++ b/drivers/mfd/wm5110-tables.c
@@ -1807,6 +1807,7 @@ static bool wm5110_readable_register(struct device *dev, unsigned int reg)
 	case ARIZONA_MIC_DETECT_1:
 	case ARIZONA_MIC_DETECT_2:
 	case ARIZONA_MIC_DETECT_3:
+	case ARIZONA_MIC_DETECT_4:
 	case ARIZONA_MIC_DETECT_LEVEL_1:
 	case ARIZONA_MIC_DETECT_LEVEL_2:
 	case ARIZONA_MIC_DETECT_LEVEL_3:
@@ -2843,6 +2844,7 @@ static bool wm5110_volatile_register(struct device *dev, unsigned int reg)
 	case ARIZONA_ASYNC_SAMPLE_RATE_1_STATUS:
 	case ARIZONA_ASYNC_SAMPLE_RATE_2_STATUS:
 	case ARIZONA_MIC_DETECT_3:
+	case ARIZONA_MIC_DETECT_4:
 	case ARIZONA_HP_CTRL_1L:
 	case ARIZONA_HP_CTRL_1R:
 	case ARIZONA_HEADPHONE_DETECT_2:
diff --git a/include/dt-bindings/mfd/arizona.h b/include/dt-bindings/mfd/arizona.h
index 7b2000c..c40f665 100644
--- a/include/dt-bindings/mfd/arizona.h
+++ b/include/dt-bindings/mfd/arizona.h
@@ -107,5 +107,7 @@
 #define ARIZONA_ACCDET_MODE_MIC 0
 #define ARIZONA_ACCDET_MODE_HPL 1
 #define ARIZONA_ACCDET_MODE_HPR 2
+#define ARIZONA_ACCDET_MODE_HPM 4
+#define ARIZONA_ACCDET_MODE_ADC 7
 
 #endif
diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h
index 43db4fa..f030a32 100644
--- a/include/linux/mfd/arizona/pdata.h
+++ b/include/linux/mfd/arizona/pdata.h
@@ -124,6 +124,9 @@ struct arizona_pdata {
 	/** Channel to use for headphone detection */
 	unsigned int hpdet_channel;
 
+	/** Use software comparison to determine mic presence */
+	bool micd_software_compare;
+
 	/** Extra debounce timeout used during initial mic detection (ms) */
 	int micd_detect_debounce;
 
diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h
index 3499d36..3f3bb2b 100644
--- a/include/linux/mfd/arizona/registers.h
+++ b/include/linux/mfd/arizona/registers.h
@@ -139,6 +139,7 @@
 #define ARIZONA_MIC_DETECT_LEVEL_2		 0x2A7
 #define ARIZONA_MIC_DETECT_LEVEL_3		 0x2A8
 #define ARIZONA_MIC_DETECT_LEVEL_4		 0x2A9
+#define ARIZONA_MIC_DETECT_4                     0x2AB
 #define ARIZONA_MIC_NOISE_MIX_CONTROL_1          0x2C3
 #define ARIZONA_ISOLATION_CONTROL                0x2CB
 #define ARIZONA_JACK_DETECT_ANALOGUE             0x2D3
@@ -2301,9 +2302,9 @@
 #define ARIZONA_ACCDET_SRC_MASK                  0x2000  /* ACCDET_SRC */
 #define ARIZONA_ACCDET_SRC_SHIFT                     13  /* ACCDET_SRC */
 #define ARIZONA_ACCDET_SRC_WIDTH                      1  /* ACCDET_SRC */
-#define ARIZONA_ACCDET_MODE_MASK                 0x0003  /* ACCDET_MODE - [1:0] */
-#define ARIZONA_ACCDET_MODE_SHIFT                     0  /* ACCDET_MODE - [1:0] */
-#define ARIZONA_ACCDET_MODE_WIDTH                     2  /* ACCDET_MODE - [1:0] */
+#define ARIZONA_ACCDET_MODE_MASK                 0x0007  /* ACCDET_MODE - [2:0] */
+#define ARIZONA_ACCDET_MODE_SHIFT                     0  /* ACCDET_MODE - [2:0] */
+#define ARIZONA_ACCDET_MODE_WIDTH                     3  /* ACCDET_MODE - [2:0] */
 
 /*
  * R667 (0x29B) - Headphone Detect 1
@@ -2413,6 +2414,16 @@
 #define ARIZONA_MICD_STS_WIDTH                        1  /* MICD_STS */
 
 /*
+ * R683 (0x2AB) - Mic Detect 4
+ */
+#define ARIZONA_MICDET_ADCVAL_DIFF_MASK          0xFF00  /* MICDET_ADCVAL_DIFF - [15:8] */
+#define ARIZONA_MICDET_ADCVAL_DIFF_SHIFT              8  /* MICDET_ADCVAL_DIFF - [15:8] */
+#define ARIZONA_MICDET_ADCVAL_DIFF_WIDTH              8  /* MICDET_ADCVAL_DIFF - [15:8] */
+#define ARIZONA_MICDET_ADCVAL_MASK               0x007F  /* MICDET_ADCVAL - [15:8] */
+#define ARIZONA_MICDET_ADCVAL_SHIFT                   0  /* MICDET_ADCVAL - [15:8] */
+#define ARIZONA_MICDET_ADCVAL_WIDTH                   7  /* MICDET_ADCVAL - [15:8] */
+
+/*
  * R707 (0x2C3) - Mic noise mix control 1
  */
 #define ARIZONA_MICMUTE_RATE_MASK                0x7800  /* MICMUTE_RATE - [14:11] */
-- 
1.7.2.5