// SPDX-License-Identifier: GPL-2.0 // // ALSA SoC Audio Layer - Samsung I2S Controller driver // // Copyright (c) 2010 Samsung Electronics Co. Ltd. // Jaswinder Singh <[email protected]> #include <dt-bindings/sound/samsung-i2s.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of.h> #include <linux/pm_runtime.h> #include <sound/soc.h> #include <sound/pcm_params.h> #include <linux/platform_data/asoc-s3c.h> #include "dma.h" #include "idma.h" #include "i2s.h" #include "i2s-regs.h" #define msecs_to_loops(t) … #define SAMSUNG_I2S_ID_PRIMARY … #define SAMSUNG_I2S_ID_SECONDARY … struct samsung_i2s_variant_regs { … }; struct samsung_i2s_dai_data { … }; struct i2s_dai { … }; struct samsung_i2s_priv { … }; /* Returns true if this is the 'overlay' stereo DAI */ static inline bool is_secondary(struct i2s_dai *i2s) { … } /* If this interface of the controller is transmitting data */ static inline bool tx_active(struct i2s_dai *i2s) { … } /* Return pointer to the other DAI */ static inline struct i2s_dai *get_other_dai(struct i2s_dai *i2s) { … } /* If the other interface of the controller is transmitting data */ static inline bool other_tx_active(struct i2s_dai *i2s) { … } /* If any interface of the controller is transmitting data */ static inline bool any_tx_active(struct i2s_dai *i2s) { … } /* If this interface of the controller is receiving data */ static inline bool rx_active(struct i2s_dai *i2s) { … } /* If the other interface of the controller is receiving data */ static inline bool other_rx_active(struct i2s_dai *i2s) { … } /* If any interface of the controller is receiving data */ static inline bool any_rx_active(struct i2s_dai *i2s) { … } /* If the other DAI is transmitting or receiving data */ static inline bool other_active(struct i2s_dai *i2s) { … } /* If this DAI is transmitting or receiving data */ static inline bool this_active(struct i2s_dai *i2s) { … } /* If the controller is active anyway */ static inline bool any_active(struct i2s_dai *i2s) { … } static inline struct i2s_dai *to_info(struct snd_soc_dai *dai) { … } static inline bool is_opened(struct i2s_dai *i2s) { … } static inline bool is_manager(struct i2s_dai *i2s) { … } /* Read RCLK of I2S (in multiples of LRCLK) */ static inline unsigned get_rfs(struct i2s_dai *i2s) { … } /* Write RCLK of I2S (in multiples of LRCLK) */ static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs) { … } /* Read bit-clock of I2S (in multiples of LRCLK) */ static inline unsigned get_bfs(struct i2s_dai *i2s) { … } /* Write bit-clock of I2S (in multiples of LRCLK) */ static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs) { … } /* Sample size */ static inline int get_blc(struct i2s_dai *i2s) { … } /* TX channel control */ static void i2s_txctrl(struct i2s_dai *i2s, int on) { … } /* RX Channel Control */ static void i2s_rxctrl(struct i2s_dai *i2s, int on) { … } /* Flush FIFO of an interface */ static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush) { … } static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs, int dir) { … } static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { … } static int i2s_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } /* We set constraints on the substream according to the version of I2S */ static int i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static void i2s_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int config_setup(struct i2s_dai *i2s) { … } static int i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { … } static int i2s_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div) { … } static snd_pcm_sframes_t i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } #ifdef CONFIG_PM static int i2s_suspend(struct snd_soc_component *component) { … } static int i2s_resume(struct snd_soc_component *component) { … } #else #define i2s_suspend … #define i2s_resume … #endif static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) { … } static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) { … } static const struct snd_soc_dai_ops samsung_i2s_dai_ops = …; static const struct snd_soc_dapm_widget samsung_i2s_widgets[] = …; static const struct snd_soc_dapm_route samsung_i2s_dapm_routes[] = …; static const struct snd_soc_component_driver samsung_i2s_component = …; #define SAMSUNG_I2S_FMTS … static int i2s_alloc_dais(struct samsung_i2s_priv *priv, const struct samsung_i2s_dai_data *i2s_dai_data, int num_dais) { … } #ifdef CONFIG_PM static int i2s_runtime_suspend(struct device *dev) { … } static int i2s_runtime_resume(struct device *dev) { … } #endif /* CONFIG_PM */ static void i2s_unregister_clocks(struct samsung_i2s_priv *priv) { … } static void i2s_unregister_clock_provider(struct samsung_i2s_priv *priv) { … } static int i2s_register_clock_provider(struct samsung_i2s_priv *priv) { … } /* Create platform device for the secondary PCM */ static int i2s_create_secondary_device(struct samsung_i2s_priv *priv) { … } static void i2s_delete_secondary_device(struct samsung_i2s_priv *priv) { … } static int samsung_i2s_probe(struct platform_device *pdev) { … } static void samsung_i2s_remove(struct platform_device *pdev) { … } static void fsd_i2s_fixup_early(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static void fsd_i2s_fixup_late(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static const struct samsung_i2s_variant_regs i2sv3_regs = …; static const struct samsung_i2s_variant_regs i2sv6_regs = …; static const struct samsung_i2s_variant_regs i2sv7_regs = …; static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = …; static const struct samsung_i2s_dai_data i2sv3_dai_type = …; static const struct samsung_i2s_dai_data i2sv5_dai_type __maybe_unused = …; static const struct samsung_i2s_dai_data i2sv6_dai_type __maybe_unused = …; static const struct samsung_i2s_dai_data i2sv7_dai_type __maybe_unused = …; static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 __maybe_unused = …; static const struct samsung_i2s_dai_data fsd_dai_type __maybe_unused = …; static const struct platform_device_id samsung_i2s_driver_ids[] = …; MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids); #ifdef CONFIG_OF static const struct of_device_id exynos_i2s_match[] = …; MODULE_DEVICE_TABLE(of, exynos_i2s_match); #endif static const struct dev_pm_ops samsung_i2s_pm = …; static struct platform_driver samsung_i2s_driver = …; module_platform_driver(…) …; /* Module information */ MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux