linux/sound/soc/codecs/wm8804.h
Charles Keepax 1a60667fc8 ASoC: wm8804: Enable runtime PM
Currently both the oscillator and the PLL are powered up in
set_bias_level. This can be problematic when using output clocks from
the wm8804 for other devices. The snd_soc_codec_set_pll API defines that
a clock should be available once the call returns, however, with all the
clocking controlled in set_bias_level this is not currently the case.

This patch enables pm_runtime for the wm8804, enabling both the
regulators and the oscillator when the chip resumes, and enabling the
PLL in the snd_soc_codec_set_pll call. Naturally the enabling the PLL
will also cause the chip to resume.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-08 19:25:40 +01:00

74 lines
1.9 KiB
C

/*
* wm8804.h -- WM8804 S/PDIF transceiver driver
*
* Copyright 2010 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _WM8804_H
#define _WM8804_H
#include <linux/regmap.h>
/*
* Register values.
*/
#define WM8804_RST_DEVID1 0x00
#define WM8804_DEVID2 0x01
#define WM8804_DEVREV 0x02
#define WM8804_PLL1 0x03
#define WM8804_PLL2 0x04
#define WM8804_PLL3 0x05
#define WM8804_PLL4 0x06
#define WM8804_PLL5 0x07
#define WM8804_PLL6 0x08
#define WM8804_SPDMODE 0x09
#define WM8804_INTMASK 0x0A
#define WM8804_INTSTAT 0x0B
#define WM8804_SPDSTAT 0x0C
#define WM8804_RXCHAN1 0x0D
#define WM8804_RXCHAN2 0x0E
#define WM8804_RXCHAN3 0x0F
#define WM8804_RXCHAN4 0x10
#define WM8804_RXCHAN5 0x11
#define WM8804_SPDTX1 0x12
#define WM8804_SPDTX2 0x13
#define WM8804_SPDTX3 0x14
#define WM8804_SPDTX4 0x15
#define WM8804_SPDTX5 0x16
#define WM8804_GPO0 0x17
#define WM8804_GPO1 0x18
#define WM8804_GPO2 0x1A
#define WM8804_AIFTX 0x1B
#define WM8804_AIFRX 0x1C
#define WM8804_SPDRX1 0x1D
#define WM8804_PWRDN 0x1E
#define WM8804_REGISTER_COUNT 30
#define WM8804_MAX_REGISTER 0x1E
#define WM8804_TX_CLKSRC_MCLK 1
#define WM8804_TX_CLKSRC_PLL 2
#define WM8804_CLKOUT_SRC_CLK1 3
#define WM8804_CLKOUT_SRC_OSCCLK 4
#define WM8804_CLKOUT_DIV 1
#define WM8804_MCLK_DIV 2
#define WM8804_MCLKDIV_256FS 0
#define WM8804_MCLKDIV_128FS 1
extern const struct regmap_config wm8804_regmap_config;
extern const struct dev_pm_ops wm8804_pm;
int wm8804_probe(struct device *dev, struct regmap *regmap);
void wm8804_remove(struct device *dev);
#endif /* _WM8804_H */