From 37f88e8407f75fc6ced5cefb633c314556de3ad1 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 15 Mar 2010 18:14:34 +0000 Subject: ASoC: Initial WM8903 microphone bias and short detection Provide support for WM8903 microphone presence and short detection using the GPIOs to route out a logic signal suitable for handling using snd_soc_jack_add_gpios() on the processor GPIOs. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/sound/wm8903.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'include') diff --git a/include/sound/wm8903.h b/include/sound/wm8903.h index 00458589fe8..22b66a76feb 100644 --- a/include/sound/wm8903.h +++ b/include/sound/wm8903.h @@ -14,6 +14,28 @@ /* Used to enable configuration of a GPIO to all zeros */ #define WM8903_GPIO_NO_CONFIG 0x8000 +/* + * R6 (0x06) - Mic Bias Control 0 + */ +#define WM8903_MICDET_HYST_ENA 0x0080 /* MICDET_HYST_ENA */ +#define WM8903_MICDET_HYST_ENA_MASK 0x0080 /* MICDET_HYST_ENA */ +#define WM8903_MICDET_HYST_ENA_SHIFT 7 /* MICDET_HYST_ENA */ +#define WM8903_MICDET_HYST_ENA_WIDTH 1 /* MICDET_HYST_ENA */ +#define WM8903_MICDET_THR_MASK 0x0070 /* MICDET_THR - [6:4] */ +#define WM8903_MICDET_THR_SHIFT 4 /* MICDET_THR - [6:4] */ +#define WM8903_MICDET_THR_WIDTH 3 /* MICDET_THR - [6:4] */ +#define WM8903_MICSHORT_THR_MASK 0x000C /* MICSHORT_THR - [3:2] */ +#define WM8903_MICSHORT_THR_SHIFT 2 /* MICSHORT_THR - [3:2] */ +#define WM8903_MICSHORT_THR_WIDTH 2 /* MICSHORT_THR - [3:2] */ +#define WM8903_MICDET_ENA 0x0002 /* MICDET_ENA */ +#define WM8903_MICDET_ENA_MASK 0x0002 /* MICDET_ENA */ +#define WM8903_MICDET_ENA_SHIFT 1 /* MICDET_ENA */ +#define WM8903_MICDET_ENA_WIDTH 1 /* MICDET_ENA */ +#define WM8903_MICBIAS_ENA 0x0001 /* MICBIAS_ENA */ +#define WM8903_MICBIAS_ENA_MASK 0x0001 /* MICBIAS_ENA */ +#define WM8903_MICBIAS_ENA_SHIFT 0 /* MICBIAS_ENA */ +#define WM8903_MICBIAS_ENA_WIDTH 1 /* MICBIAS_ENA */ + /* * R116 (0x74) - GPIO Control 1 */ @@ -210,6 +232,13 @@ #define WM8903_GP5_DB_WIDTH 1 /* GP5_DB */ struct wm8903_platform_data { + /* Default register value for R6 (Mic bias), used to configure + * microphone detection. In conjunction with gpio_cfg this + * can be used to route the microphone status signals out onto + * the GPIOs for use with snd_soc_jack_add_gpios(). + */ + u16 micdet_cfg; + u32 gpio_cfg[5]; /* Default register values for GPIO pin mux */ }; -- cgit v1.2.3-70-g09d2