// SPDX-License-Identifier: GPL-2.0-only /* * IMG I2S input controller driver * * Copyright (C) 2015 Imagination Technologies Ltd. * * Author: Damien Horsley <[email protected]> */ #include <linux/clk.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/reset.h> #include <sound/core.h> #include <sound/dmaengine_pcm.h> #include <sound/initval.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #define IMG_I2S_IN_RX_FIFO … #define IMG_I2S_IN_CTL … #define IMG_I2S_IN_CTL_ACTIVE_CHAN_MASK … #define IMG_I2S_IN_CTL_ACTIVE_CH_SHIFT … #define IMG_I2S_IN_CTL_16PACK_MASK … #define IMG_I2S_IN_CTL_ME_MASK … #define IMG_I2S_IN_CH_CTL … #define IMG_I2S_IN_CH_CTL_CCDEL_MASK … #define IMG_I2S_IN_CH_CTL_CCDEL_SHIFT … #define IMG_I2S_IN_CH_CTL_FEN_MASK … #define IMG_I2S_IN_CH_CTL_FMODE_MASK … #define IMG_I2S_IN_CH_CTL_16PACK_MASK … #define IMG_I2S_IN_CH_CTL_JUST_MASK … #define IMG_I2S_IN_CH_CTL_PACKH_MASK … #define IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK … #define IMG_I2S_IN_CH_CTL_BLKP_MASK … #define IMG_I2S_IN_CH_CTL_FIFO_FLUSH_MASK … #define IMG_I2S_IN_CH_CTL_LRD_MASK … #define IMG_I2S_IN_CH_CTL_FW_MASK … #define IMG_I2S_IN_CH_CTL_SW_MASK … #define IMG_I2S_IN_CH_CTL_ME_MASK … #define IMG_I2S_IN_CH_STRIDE … struct img_i2s_in { … }; static int img_i2s_in_runtime_suspend(struct device *dev) { … } static int img_i2s_in_runtime_resume(struct device *dev) { … } static inline void img_i2s_in_writel(struct img_i2s_in *i2s, u32 val, u32 reg) { … } static inline u32 img_i2s_in_readl(struct img_i2s_in *i2s, u32 reg) { … } static inline void img_i2s_in_ch_writel(struct img_i2s_in *i2s, u32 chan, u32 val, u32 reg) { … } static inline u32 img_i2s_in_ch_readl(struct img_i2s_in *i2s, u32 chan, u32 reg) { … } static inline void img_i2s_in_ch_disable(struct img_i2s_in *i2s, u32 chan) { … } static inline void img_i2s_in_ch_enable(struct img_i2s_in *i2s, u32 chan) { … } static inline void img_i2s_in_disable(struct img_i2s_in *i2s) { … } static inline void img_i2s_in_enable(struct img_i2s_in *i2s) { … } static inline void img_i2s_in_flush(struct img_i2s_in *i2s) { … } static int img_i2s_in_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { … } static int img_i2s_in_check_rate(struct img_i2s_in *i2s, unsigned int sample_rate, unsigned int frame_size, unsigned int *bclk_filter_enable, unsigned int *bclk_filter_value) { … } static int img_i2s_in_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } static int img_i2s_in_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { … } static int img_i2s_in_dai_probe(struct snd_soc_dai *dai) { … } static const struct snd_soc_dai_ops img_i2s_in_dai_ops = …; static const struct snd_soc_component_driver img_i2s_in_component = …; static int img_i2s_in_dma_prepare_slave_config(struct snd_pcm_substream *st, struct snd_pcm_hw_params *params, struct dma_slave_config *sc) { … } static const struct snd_dmaengine_pcm_config img_i2s_in_dma_config = …; static int img_i2s_in_probe(struct platform_device *pdev) { … } static void img_i2s_in_dev_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM_SLEEP static int img_i2s_in_suspend(struct device *dev) { … } static int img_i2s_in_resume(struct device *dev) { … } #endif static const struct of_device_id img_i2s_in_of_match[] = …; MODULE_DEVICE_TABLE(of, img_i2s_in_of_match); static const struct dev_pm_ops img_i2s_in_pm_ops = …; static struct platform_driver img_i2s_in_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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