linux-kernel - [PATCH 1/9] mfd: arizona: Add registers for ADC microphone detection

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Date:	Wed, 16 Sep 2015 10:42:13 +0100
From:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To:	<cw00.choi@...sung.com>, <lee.jones@...aro.org>
CC:	<myungjoo.ham@...sung.com>, <sameo@...ux.intel.com>,
	<patches@...nsource.wolfsonmicro.com>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 1/9] mfd: arizona: Add registers for ADC microphone detection

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@...nsource.wolfsonmicro.com>
Acked-by: Lee Jones <lee.jones@...aro.org>
---
 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 |    6 +++---
 4 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/wm5110-tables.c b/drivers/mfd/wm5110-tables.c
index c4b9374..5f604e0 100644
--- a/drivers/mfd/wm5110-tables.c
+++ b/drivers/mfd/wm5110-tables.c
@@ -1811,6 +1811,7 @@ 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:
@@ -2847,6 +2848,7 @@ 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 1dc3858..92f31ffa 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) */
 	unsigned int micd_detect_debounce;
 
diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h
index fdd70b3..ab219c9 100644
--- a/include/linux/mfd/arizona/registers.h
+++ b/include/linux/mfd/arizona/registers.h
@@ -2359,9 +2359,9 @@
 #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
-- 
1.7.2.5

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