From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH] ASoC: Support configuration of WM8958 microphone bias analogue parameters
Date: Tue, 22 Feb 2011 01:16:00 +0000 [thread overview]
Message-ID: <1298337360-12614-1-git-send-email-broonie@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <>
The WM8958 has a different microphone bias architecture to WM8994 so needs
different configuration to WM8994. Support this in platform data.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
include/linux/mfd/wm8994/pdata.h | 7 +++++--
include/linux/mfd/wm8994/registers.h | 2 ++
sound/soc/codecs/wm8994.c | 7 +++++++
3 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index 0686946..466b1c7 100644
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -108,13 +108,16 @@ struct wm8994_pdata {
*/
int micdet_irq;
- /* Microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */
+ /* WM8994 microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */
unsigned int micbias1_lvl:1;
unsigned int micbias2_lvl:1;
- /* Jack detect threashold levels, see datasheet for values */
+ /* WM8994 jack detect threashold levels, see datasheet for values */
unsigned int jd_scthr:2;
unsigned int jd_thr:2;
+
+ /* WM8958 microphone bias configuration */
+ int micbias[2];
};
#endif
diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h
index be072fa..f3ee842 100644
--- a/include/linux/mfd/wm8994/registers.h
+++ b/include/linux/mfd/wm8994/registers.h
@@ -63,6 +63,8 @@
#define WM8994_MICBIAS 0x3A
#define WM8994_LDO_1 0x3B
#define WM8994_LDO_2 0x3C
+#define WM8958_MICBIAS1 0x3D
+#define WM8958_MICBIAS2 0x3E
#define WM8994_CHARGE_PUMP_1 0x4C
#define WM8958_CHARGE_PUMP_2 0x4D
#define WM8994_CLASS_W_1 0x51
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index ce192cc..4df047e 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -2859,6 +2859,13 @@ static void wm8994_handle_pdata(struct wm8994_priv *wm8994)
else
snd_soc_add_controls(wm8994->codec, wm8994_eq_controls,
ARRAY_SIZE(wm8994_eq_controls));
+
+ for (i = 0; i < ARRAY_SIZE(pdata->micbias); i++) {
+ if (pdata->micbias[i]) {
+ snd_soc_write(codec, WM8958_MICBIAS1 + i,
+ pdata->micbias[i] & 0xffff);
+ }
+ }
}
/**
--
1.7.2.3
next reply other threads:[~2011-02-22 1:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-22 1:16 Mark Brown [this message]
2011-02-22 9:42 ` [PATCH] ASoC: Support configuration of WM8958 microphone bias analogue parameters Liam Girdwood
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