ca9aef5072
In the process we convert the driver to read registers one at a time when initialising the cache. This has the effect of working around limitations in the sizes of I2C transactions which can be done by some CPUs. Due to the sparseness of the register map the overhead from this should be minimual unless I2C transactions are very expensive to start. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* wm8994.h -- WM8994 Soc Audio driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _WM8994_H
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#define _WM8994_H
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#include <sound/soc.h>
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/* Sources for AIF1/2 SYSCLK - use with set_dai_sysclk() */
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#define WM8994_SYSCLK_MCLK1 1
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#define WM8994_SYSCLK_MCLK2 2
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#define WM8994_SYSCLK_FLL1 3
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#define WM8994_SYSCLK_FLL2 4
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/* OPCLK is also configured with set_dai_sysclk, specify division*10 as rate. */
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#define WM8994_SYSCLK_OPCLK 5
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#define WM8994_FLL1 1
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#define WM8994_FLL2 2
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#define WM8994_FLL_SRC_MCLK1 1
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#define WM8994_FLL_SRC_MCLK2 2
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#define WM8994_FLL_SRC_LRCLK 3
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#define WM8994_FLL_SRC_BCLK 4
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typedef void (*wm8958_micdet_cb)(u16 status, void *data);
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int wm8994_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
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int micbias, int det, int shrt);
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int wm8958_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
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wm8958_micdet_cb cb, void *cb_data);
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#define WM8994_CACHE_SIZE 1570
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struct wm8994_access_mask {
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unsigned short readable; /* Mask of readable bits */
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unsigned short writable; /* Mask of writable bits */
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};
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extern const struct wm8994_access_mask wm8994_access_masks[WM8994_CACHE_SIZE];
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extern const __devinitdata u16 wm8994_reg_defaults[WM8994_CACHE_SIZE];
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#endif
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