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The cs35l41 supports a low power DSP memory retention mode. Add support for entering this mode when then device is not in use. Co-authored-by: David Rhodes <david.rhodes@cirrus.com> Signed-off-by: David Rhodes <david.rhodes@cirrus.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20220107160636.6555-3-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0
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*
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* cs35l41.h -- CS35L41 ALSA SoC audio driver
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*
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* Copyright 2017-2021 Cirrus Logic, Inc.
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*
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* Author: David Rhodes <david.rhodes@cirrus.com>
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*/
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#ifndef __CS35L41_H__
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#define __CS35L41_H__
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <linux/firmware.h>
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#include <sound/core.h>
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#include <sound/cs35l41.h>
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#include "wm_adsp.h"
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#define CS35L41_RX_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
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#define CS35L41_TX_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
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extern const struct dev_pm_ops cs35l41_pm_ops;
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enum cs35l41_cspl_mbox_status {
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CSPL_MBOX_STS_RUNNING = 0,
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CSPL_MBOX_STS_PAUSED = 1,
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CSPL_MBOX_STS_RDY_FOR_REINIT = 2,
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};
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enum cs35l41_cspl_mbox_cmd {
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CSPL_MBOX_CMD_NONE = 0,
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CSPL_MBOX_CMD_PAUSE = 1,
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CSPL_MBOX_CMD_RESUME = 2,
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CSPL_MBOX_CMD_REINIT = 3,
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CSPL_MBOX_CMD_STOP_PRE_REINIT = 4,
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CSPL_MBOX_CMD_HIBERNATE = 5,
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CSPL_MBOX_CMD_OUT_OF_HIBERNATE = 6,
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CSPL_MBOX_CMD_UNKNOWN_CMD = -1,
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CSPL_MBOX_CMD_INVALID_SEQUENCE = -2,
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};
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struct cs35l41_private {
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struct wm_adsp dsp; /* needs to be first member */
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struct snd_soc_codec *codec;
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struct cs35l41_platform_data pdata;
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struct device *dev;
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struct regmap *regmap;
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struct regulator_bulk_data supplies[CS35L41_NUM_SUPPLIES];
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int irq;
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/* GPIO for /RST */
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struct gpio_desc *reset_gpio;
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};
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int cs35l41_probe(struct cs35l41_private *cs35l41,
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struct cs35l41_platform_data *pdata);
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void cs35l41_remove(struct cs35l41_private *cs35l41);
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#endif /*__CS35L41_H__*/
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