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yaml
---
r: 353456
b: refs/heads/master
c: 1a78624
h: refs/heads/master
v: v3
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Chris Rattray authored and Mark Brown committed Feb 5, 2013
1 parent fed84b4 commit 9dcfb6b
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Showing 3 changed files with 53 additions and 2 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 4c97e8fedf1a7ef52e23dc06ec7a15be54ed18a4
refs/heads/master: 1a786243235b8a8f4762ee57f185dadd97794fa4
22 changes: 21 additions & 1 deletion trunk/include/sound/wm2200.h
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
#define __LINUX_SND_WM2200_H

#define WM2200_GPIO_SET 0x10000
#define WM2200_MAX_MICBIAS 2

enum wm2200_in_mode {
WM2200_IN_SE = 0,
Expand All @@ -25,6 +26,24 @@ enum wm2200_dmic_sup {
WM2200_DMIC_SUP_MICBIAS2 = 2,
};

enum wm2200_mbias_lvl {
WM2200_MBIAS_LVL_1V5 = 1,
WM2200_MBIAS_LVL_1V8 = 2,
WM2200_MBIAS_LVL_1V9 = 3,
WM2200_MBIAS_LVL_2V0 = 4,
WM2200_MBIAS_LVL_2V2 = 5,
WM2200_MBIAS_LVL_2V4 = 6,
WM2200_MBIAS_LVL_2V5 = 7,
WM2200_MBIAS_LVL_2V6 = 8,
};

struct wm2200_micbias {
enum wm2200_mbias_lvl mb_lvl; /** Regulated voltage */
unsigned int discharge:1; /** Actively discharge */
unsigned int fast_start:1; /** Enable aggressive startup ramp rate */
unsigned int bypass:1; /** Use bypass mode */
};

struct wm2200_pdata {
int reset; /** GPIO controlling /RESET, if any */
int ldo_ena; /** GPIO controlling LODENA, if any */
Expand All @@ -35,7 +54,8 @@ struct wm2200_pdata {
enum wm2200_in_mode in_mode[3];
enum wm2200_dmic_sup dmic_sup[3];

int micbias_cfg[2]; /** Register value to configure MICBIAS */
/** MICBIAS configurations */
struct wm2200_micbias micbias[WM2200_MAX_MICBIAS];
};

#endif
31 changes: 31 additions & 0 deletions trunk/sound/soc/codecs/wm2200.c
Original file line number Diff line number Diff line change
Expand Up @@ -2212,6 +2212,7 @@ static int wm2200_i2c_probe(struct i2c_client *i2c,
struct wm2200_priv *wm2200;
unsigned int reg;
int ret, i;
int val;

wm2200 = devm_kzalloc(&i2c->dev, sizeof(struct wm2200_priv),
GFP_KERNEL);
Expand Down Expand Up @@ -2362,6 +2363,36 @@ static int wm2200_i2c_probe(struct i2c_client *i2c,
regmap_write(wm2200->regmap, WM2200_AUDIO_IF_1_16 + i, i);
}

for (i = 0; i < WM2200_MAX_MICBIAS; i++) {
if (!wm2200->pdata.micbias[i].mb_lvl &&
!wm2200->pdata.micbias[i].bypass)
continue;

/* Apply default for bypass mode */
if (!wm2200->pdata.micbias[i].mb_lvl)
wm2200->pdata.micbias[i].mb_lvl
= WM2200_MBIAS_LVL_1V5;

val = (wm2200->pdata.micbias[i].mb_lvl -1)
<< WM2200_MICB1_LVL_SHIFT;

if (wm2200->pdata.micbias[i].discharge)
val |= WM2200_MICB1_DISCH;

if (wm2200->pdata.micbias[i].fast_start)
val |= WM2200_MICB1_RATE;

if (wm2200->pdata.micbias[i].bypass)
val |= WM2200_MICB1_MODE;

regmap_update_bits(wm2200->regmap,
WM2200_MIC_BIAS_CTRL_1 + i,
WM2200_MICB1_LVL_MASK |
WM2200_MICB1_DISCH |
WM2200_MICB1_MODE |
WM2200_MICB1_RATE, val);
}

for (i = 0; i < ARRAY_SIZE(wm2200->pdata.in_mode); i++) {
regmap_update_bits(wm2200->regmap, wm2200_mic_ctrl_reg[i],
WM2200_IN1_MODE_MASK |
Expand Down

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