extcon: arizona: Use microphone clamp function if available

Newer Arizona devices include a microphone clamp function which is tied to
jack detect. Activate this feature when present in order to ensure best
performance of the subsystem.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 635b7078ce5ee41f31ca6b6751d55b4060a931a0..3ef3bee7d1e65dabee5e9cadd7e404289706339e 100644 (file)
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -45,6 +45,7 @@ struct arizona_extcon_info {
        int micd_num_modes;
 
        bool micd_reva;
+       bool micd_clamp;
 
        bool mic;
        bool detecting;
@@ -375,6 +376,7 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                        info->micd_reva = true;
                        break;
                default:
+                       info->micd_clamp = true;
                        break;
                }
                break;
@@ -423,6 +425,19 @@ static int arizona_extcon_probe(struct platform_device *pdev)
                                   arizona->pdata.micd_bias_start_time
                                   << ARIZONA_MICD_BIAS_STARTTIME_SHIFT);
 
+       /*
+        * If we have a clamp use it.
+        */
+       if (info->micd_clamp) {
+               regmap_update_bits(arizona->regmap,
+                                  ARIZONA_MICD_CLAMP_CONTROL,
+                                  ARIZONA_MICD_CLAMP_MODE_MASK, 4);
+               regmap_update_bits(arizona->regmap,
+                                  ARIZONA_JACK_DETECT_DEBOUNCE,
+                                  ARIZONA_MICD_CLAMP_DB,
+                                  ARIZONA_MICD_CLAMP_DB);
+       }
+
        arizona_extcon_set_mode(info, 0);
 
        info->input = devm_input_allocate_device(&pdev->dev);
@@ -529,6 +544,10 @@ static int arizona_extcon_remove(struct platform_device *pdev)
 
        pm_runtime_disable(&pdev->dev);
 
+       regmap_update_bits(arizona->regmap,
+                          ARIZONA_MICD_CLAMP_CONTROL,
+                          ARIZONA_MICD_CLAMP_MODE_MASK, 0);
+
        arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0);
        arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0);
        arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info);

diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h
index a580363a7d29723e6656cbed8d9d94b4b1801bea..a710255528d7c806415ec2f0ba953afe77d2b0d5 100644 (file)
--- a/include/linux/mfd/arizona/core.h
+++ b/include/linux/mfd/arizona/core.h
@@ -75,8 +75,10 @@ enum arizona_type {
 #define ARIZONA_IRQ_DCS_HP_DONE           47
 #define ARIZONA_IRQ_FLL2_CLOCK_OK         48
 #define ARIZONA_IRQ_FLL1_CLOCK_OK         49
+#define ARIZONA_IRQ_MICD_CLAMP_RISE      50
+#define ARIZONA_IRQ_MICD_CLAMP_FALL      51
 
-#define ARIZONA_NUM_IRQ                   50
+#define ARIZONA_NUM_IRQ                   52
 
 struct snd_soc_dapm_context;
 

diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h
index 1f6fe31a4d5cdbfe0354e9eff4835ac5e87a145b..f3211f06cec6aca80d5a4e24b42f18d30a9eaf87 100644 (file)
--- a/include/linux/mfd/arizona/registers.h
+++ b/include/linux/mfd/arizona/registers.h
@@ -119,6 +119,7 @@
 #define ARIZONA_ACCESSORY_DETECT_MODE_1          0x293
 #define ARIZONA_HEADPHONE_DETECT_1               0x29B
 #define ARIZONA_HEADPHONE_DETECT_2               0x29C
+#define ARIZONA_MICD_CLAMP_CONTROL               0x2A2
 #define ARIZONA_MIC_DETECT_1                     0x2A3
 #define ARIZONA_MIC_DETECT_2                     0x2A4
 #define ARIZONA_MIC_DETECT_3                     0x2A5
@@ -2069,6 +2070,13 @@
 #define ARIZONA_HP_LVL_SHIFT                          0  /* HP_LVL - [6:0] */
 #define ARIZONA_HP_LVL_WIDTH                          7  /* HP_LVL - [6:0] */
 
+/*
+ * R674 (0x2A2) - MICD clamp control
+ */
+#define ARIZONA_MICD_CLAMP_MODE_MASK             0x000F  /* MICD_CLAMP_MODE - [3:0] */
+#define ARIZONA_MICD_CLAMP_MODE_SHIFT                 0  /* MICD_CLAMP_MODE - [3:0] */
+#define ARIZONA_MICD_CLAMP_MODE_WIDTH                 4  /* MICD_CLAMP_MODE - [3:0] */
+
 /*
  * R675 (0x2A3) - Mic Detect 1
  */
@@ -5267,6 +5275,12 @@
 /*
  * R3409 (0xD51) - AOD IRQ1
  */
+#define ARIZONA_MICD_CLAMP_FALL_EINT1            0x0080  /* MICD_CLAMP_FALL_EINT1 */
+#define ARIZONA_MICD_CLAMP_FALL_EINT1_MASK       0x0080  /* MICD_CLAMP_FALL_EINT1 */
+#define ARIZONA_MICD_CLAMP_FALL_EINT1_SHIFT           7  /* MICD_CLAMP_FALL_EINT1 */
+#define ARIZONA_MICD_CLAMP_RISE_EINT1            0x0040  /* MICD_CLAMP_RISE_EINT1 */
+#define ARIZONA_MICD_CLAMP_RISE_EINT1_MASK       0x0040  /* MICD_CLAMP_RISE_EINT1 */
+#define ARIZONA_MICD_CLAMP_RISE_EINT1_SHIFT           6  /* MICD_CLAMP_RISE_EINT1 */
 #define ARIZONA_GP5_FALL_EINT1                   0x0020  /* GP5_FALL_EINT1 */
 #define ARIZONA_GP5_FALL_EINT1_MASK              0x0020  /* GP5_FALL_EINT1 */
 #define ARIZONA_GP5_FALL_EINT1_SHIFT                  5  /* GP5_FALL_EINT1 */
@@ -5295,6 +5309,12 @@
 /*
  * R3410 (0xD52) - AOD IRQ2
  */
+#define ARIZONA_MICD_CLAMP_FALL_EINT2            0x0080  /* MICD_CLAMP_FALL_EINT2 */
+#define ARIZONA_MICD_CLAMP_FALL_EINT2_MASK       0x0080  /* MICD_CLAMP_FALL_EINT2 */
+#define ARIZONA_MICD_CLAMP_FALL_EINT2_SHIFT           7  /* MICD_CLAMP_FALL_EINT2 */
+#define ARIZONA_MICD_CLAMP_RISE_EINT2            0x0040  /* MICD_CLAMP_RISE_EINT2 */
+#define ARIZONA_MICD_CLAMP_RISE_EINT2_MASK       0x0040  /* MICD_CLAMP_RISE_EINT2 */
+#define ARIZONA_MICD_CLAMP_RISE_EINT2_SHIFT           6  /* MICD_CLAMP_RISE_EINT2 */
 #define ARIZONA_GP5_FALL_EINT2                   0x0020  /* GP5_FALL_EINT2 */
 #define ARIZONA_GP5_FALL_EINT2_MASK              0x0020  /* GP5_FALL_EINT2 */
 #define ARIZONA_GP5_FALL_EINT2_SHIFT                  5  /* GP5_FALL_EINT2 */
@@ -5379,6 +5399,10 @@
 /*
  * R3413 (0xD55) - AOD IRQ Raw Status
  */
+#define ARIZONA_MICD_CLAMP_STS                   0x0008  /* MICD_CLAMP_STS */
+#define ARIZONA_MICD_CLAMP_STS_MASK              0x0008  /* MICD_CLAMP_STS */
+#define ARIZONA_MICD_CLAMP_STS_SHIFT                  3  /* MICD_CLAMP_STS */
+#define ARIZONA_MICD_CLAMP_STS_WIDTH                  1  /* MICD_CLAMP_STS */
 #define ARIZONA_GP5_STS                          0x0004  /* GP5_STS */
 #define ARIZONA_GP5_STS_MASK                     0x0004  /* GP5_STS */
 #define ARIZONA_GP5_STS_SHIFT                         2  /* GP5_STS */
@@ -5395,6 +5419,10 @@
 /*
  * R3414 (0xD56) - Jack detect debounce
  */
+#define ARIZONA_MICD_CLAMP_DB                    0x0008  /* MICD_CLAMP_DB */
+#define ARIZONA_MICD_CLAMP_DB_MASK               0x0008  /* MICD_CLAMP_DB */
+#define ARIZONA_MICD_CLAMP_DB_SHIFT                   3  /* MICD_CLAMP_DB */
+#define ARIZONA_MICD_CLAMP_DB_WIDTH                   1  /* MICD_CLAMP_DB */
 #define ARIZONA_JD2_DB                           0x0002  /* JD2_DB */
 #define ARIZONA_JD2_DB_MASK                      0x0002  /* JD2_DB */
 #define ARIZONA_JD2_DB_SHIFT                          1  /* JD2_DB */