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Message-Id: <1382796618-19921-1-git-send-email-ckeepax@opensource.wolfsonmicro.com>
Date: Sat, 26 Oct 2013 15:10:17 +0100
From: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To: cw00.choi@...sung.com
Cc: myungjoo.ham@...sung.com, sameo@...ux.intel.com,
lee.jones@...aro.org, patches@...nsource.wolfsonmicro.com,
linux-kernel@...r.kernel.org,
Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
Subject: [PATCH 1/2] extcon: arizona: Add defines for microphone detection levels
Improve readability by creating a define for each microphone detection
level.
Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
---
drivers/extcon/extcon-arizona.c | 21 ++++++++++++++++-----
include/linux/mfd/arizona/registers.h | 9 +++++++++
2 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index ec9a14e..92eb486 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -44,6 +44,17 @@
#define HPDET_DEBOUNCE 500
#define DEFAULT_MICD_TIMEOUT 2000
+enum {
+ MICD_LVL_1_TO_7 = ARIZONA_MICD_LVL_1 | ARIZONA_MICD_LVL_2 |
+ ARIZONA_MICD_LVL_3 | ARIZONA_MICD_LVL_4 |
+ ARIZONA_MICD_LVL_5 | ARIZONA_MICD_LVL_6 |
+ ARIZONA_MICD_LVL_7,
+
+ MICD_LVL_0_TO_7 = ARIZONA_MICD_LVL_0 | MICD_LVL_1_TO_7,
+
+ MICD_LVL_0_TO_8 = MICD_LVL_0_TO_7 | ARIZONA_MICD_LVL_8,
+};
+
struct arizona_extcon_info {
struct device *dev;
struct arizona *arizona;
@@ -767,7 +778,7 @@ static void arizona_micd_detect(struct work_struct *work)
mutex_lock(&info->lock);
- for (i = 0; i < 10 && !(val & 0x7fc); i++) {
+ for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); i++) {
ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val);
if (ret != 0) {
dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret);
@@ -784,7 +795,7 @@ static void arizona_micd_detect(struct work_struct *work)
}
}
- if (i == 10 && !(val & 0x7fc)) {
+ if (i == 10 && !(val & MICD_LVL_0_TO_8)) {
dev_err(arizona->dev, "Failed to get valid MICDET value\n");
mutex_unlock(&info->lock);
return;
@@ -798,7 +809,7 @@ static void arizona_micd_detect(struct work_struct *work)
}
/* If we got a high impedence we should have a headset, report it. */
- if (info->detecting && (val & 0x400)) {
+ if (info->detecting && (val & ARIZONA_MICD_LVL_8)) {
arizona_identify_headphone(info);
ret = extcon_update_state(&info->edev,
@@ -827,7 +838,7 @@ static void arizona_micd_detect(struct work_struct *work)
* plain headphones. If both polarities report a low
* impedence then give up and report headphones.
*/
- if (info->detecting && (val & 0x3f8)) {
+ if (info->detecting && (val & MICD_LVL_1_TO_7)) {
if (info->jack_flips >= info->micd_num_modes * 10) {
dev_dbg(arizona->dev, "Detected HP/line\n");
arizona_identify_headphone(info);
@@ -851,7 +862,7 @@ static void arizona_micd_detect(struct work_struct *work)
* If we're still detecting and we detect a short then we've
* got a headphone. Otherwise it's a button press.
*/
- if (val & 0x3fc) {
+ if (val & MICD_LVL_0_TO_7) {
if (info->mic) {
dev_dbg(arizona->dev, "Mic button detected\n");
diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h
index 4706d3d..10d9e70 100644
--- a/include/linux/mfd/arizona/registers.h
+++ b/include/linux/mfd/arizona/registers.h
@@ -2196,6 +2196,15 @@
/*
* R677 (0x2A5) - Mic Detect 3
*/
+#define ARIZONA_MICD_LVL_0 0x0004 /* MICD_LVL - [2] */
+#define ARIZONA_MICD_LVL_1 0x0008 /* MICD_LVL - [3] */
+#define ARIZONA_MICD_LVL_2 0x0010 /* MICD_LVL - [4] */
+#define ARIZONA_MICD_LVL_3 0x0020 /* MICD_LVL - [5] */
+#define ARIZONA_MICD_LVL_4 0x0040 /* MICD_LVL - [6] */
+#define ARIZONA_MICD_LVL_5 0x0080 /* MICD_LVL - [7] */
+#define ARIZONA_MICD_LVL_6 0x0100 /* MICD_LVL - [8] */
+#define ARIZONA_MICD_LVL_7 0x0200 /* MICD_LVL - [9] */
+#define ARIZONA_MICD_LVL_8 0x0400 /* MICD_LVL - [10] */
#define ARIZONA_MICD_LVL_MASK 0x07FC /* MICD_LVL - [10:2] */
#define ARIZONA_MICD_LVL_SHIFT 2 /* MICD_LVL - [10:2] */
#define ARIZONA_MICD_LVL_WIDTH 9 /* MICD_LVL - [10:2] */
--
1.7.2.5
--
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