// SPDX-License-Identifier: GPL-2.0-only /* * ALSA SoC McASP Audio Layer for TI DAVINCI processor * * Multi-channel Audio Serial Port Driver * * Author: Nirmal Pandey <[email protected]>, * Suresh Rajashekara <[email protected]> * Steve Chen <[email protected]> * * Copyright: (C) 2009 MontaVista Software, Inc., <[email protected]> * Copyright: (C) 2009 Texas Instruments, India */ #include <linux/init.h> #include <linux/module.h> #include <linux/device.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/clk.h> #include <linux/pm_runtime.h> #include <linux/of.h> #include <linux/platform_data/davinci_asp.h> #include <linux/math64.h> #include <linux/bitmap.h> #include <linux/gpio/driver.h> #include <sound/asoundef.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/initval.h> #include <sound/soc.h> #include <sound/dmaengine_pcm.h> #include "edma-pcm.h" #include "sdma-pcm.h" #include "udma-pcm.h" #include "davinci-mcasp.h" #define MCASP_MAX_AFIFO_DEPTH … #ifdef CONFIG_PM static u32 context_regs[] = …; struct davinci_mcasp_context { … }; #endif struct davinci_mcasp_ruledata { … }; struct davinci_mcasp { … }; static inline void mcasp_set_bits(struct davinci_mcasp *mcasp, u32 offset, u32 val) { … } static inline void mcasp_clr_bits(struct davinci_mcasp *mcasp, u32 offset, u32 val) { … } static inline void mcasp_mod_bits(struct davinci_mcasp *mcasp, u32 offset, u32 val, u32 mask) { … } static inline void mcasp_set_reg(struct davinci_mcasp *mcasp, u32 offset, u32 val) { … } static inline u32 mcasp_get_reg(struct davinci_mcasp *mcasp, u32 offset) { … } static void mcasp_set_ctl_reg(struct davinci_mcasp *mcasp, u32 ctl_reg, u32 val) { … } static bool mcasp_is_synchronous(struct davinci_mcasp *mcasp) { … } static inline void mcasp_set_clk_pdir(struct davinci_mcasp *mcasp, bool enable) { … } static inline void mcasp_set_axr_pdir(struct davinci_mcasp *mcasp, bool enable) { … } static void mcasp_start_rx(struct davinci_mcasp *mcasp) { … } static void mcasp_start_tx(struct davinci_mcasp *mcasp) { … } static void davinci_mcasp_start(struct davinci_mcasp *mcasp, int stream) { … } static void mcasp_stop_rx(struct davinci_mcasp *mcasp) { … } static void mcasp_stop_tx(struct davinci_mcasp *mcasp) { … } static void davinci_mcasp_stop(struct davinci_mcasp *mcasp, int stream) { … } static irqreturn_t davinci_mcasp_tx_irq_handler(int irq, void *data) { … } static irqreturn_t davinci_mcasp_rx_irq_handler(int irq, void *data) { … } static irqreturn_t davinci_mcasp_common_irq_handler(int irq, void *data) { … } static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) { … } static int __davinci_mcasp_set_clkdiv(struct davinci_mcasp *mcasp, int div_id, int div, bool explicit) { … } static int davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div) { … } static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) { … } /* All serializers must have equal number of channels */ static int davinci_mcasp_ch_constraint(struct davinci_mcasp *mcasp, int stream, int serializers) { … } static int davinci_mcasp_set_ch_constraints(struct davinci_mcasp *mcasp) { … } static int davinci_mcasp_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) { … } static int davinci_config_channel_size(struct davinci_mcasp *mcasp, int sample_width) { … } static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream, int period_words, int channels) { … } static int mcasp_i2s_hw_param(struct davinci_mcasp *mcasp, int stream, int channels) { … } /* S/PDIF */ static int mcasp_dit_hw_param(struct davinci_mcasp *mcasp, unsigned int rate) { … } static int davinci_mcasp_calc_clk_div(struct davinci_mcasp *mcasp, unsigned int sysclk_freq, unsigned int bclk_freq, bool set) { … } static inline u32 davinci_mcasp_tx_delay(struct davinci_mcasp *mcasp) { … } static inline u32 davinci_mcasp_rx_delay(struct davinci_mcasp *mcasp) { … } static snd_pcm_sframes_t davinci_mcasp_delay( struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { … } static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *cpu_dai) { … } static int davinci_mcasp_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *cpu_dai) { … } static int davinci_mcasp_hw_rule_slot_width(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { … } static int davinci_mcasp_hw_rule_format_width(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { … } static const unsigned int davinci_mcasp_dai_rates[] = …; #define DAVINCI_MAX_RATE_ERROR_PPM … static int davinci_mcasp_hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { … } static int davinci_mcasp_hw_rule_format(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { … } static int davinci_mcasp_hw_rule_min_periodsize( struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) { … } static int davinci_mcasp_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { … } static void davinci_mcasp_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai) { … } static int davinci_mcasp_iec958_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { … } static int davinci_mcasp_iec958_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *uctl) { … } static int davinci_mcasp_iec958_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *uctl) { … } static int davinci_mcasp_iec958_con_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static const struct snd_kcontrol_new davinci_mcasp_iec958_ctls[] = …; static void davinci_mcasp_init_iec958_status(struct davinci_mcasp *mcasp) { … } static int davinci_mcasp_dai_probe(struct snd_soc_dai *dai) { … } static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = …; #define DAVINCI_MCASP_RATES … #define DAVINCI_MCASP_PCM_FMTS … static struct snd_soc_dai_driver davinci_mcasp_dai[] = …; static const struct snd_soc_component_driver davinci_mcasp_component = …; /* Some HW specific values and defaults. The rest is filled in from DT. */ static struct davinci_mcasp_pdata dm646x_mcasp_pdata = …; static struct davinci_mcasp_pdata da830_mcasp_pdata = …; static struct davinci_mcasp_pdata am33xx_mcasp_pdata = …; static struct davinci_mcasp_pdata dra7_mcasp_pdata = …; static struct davinci_mcasp_pdata omap_mcasp_pdata = …; static const struct of_device_id mcasp_dt_ids[] = …; MODULE_DEVICE_TABLE(of, mcasp_dt_ids); static int mcasp_reparent_fck(struct platform_device *pdev) { … } static bool davinci_mcasp_have_gpiochip(struct davinci_mcasp *mcasp) { … } static int davinci_mcasp_get_config(struct davinci_mcasp *mcasp, struct platform_device *pdev) { … } enum { … }; static const char *sdma_prefix = …; static int davinci_mcasp_get_dma_type(struct davinci_mcasp *mcasp) { … } static u32 davinci_mcasp_txdma_offset(struct davinci_mcasp_pdata *pdata) { … } static u32 davinci_mcasp_rxdma_offset(struct davinci_mcasp_pdata *pdata) { … } #ifdef CONFIG_GPIOLIB static int davinci_mcasp_gpio_request(struct gpio_chip *chip, unsigned offset) { … } static void davinci_mcasp_gpio_free(struct gpio_chip *chip, unsigned offset) { … } static int davinci_mcasp_gpio_direction_out(struct gpio_chip *chip, unsigned offset, int value) { … } static void davinci_mcasp_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { … } static int davinci_mcasp_gpio_direction_in(struct gpio_chip *chip, unsigned offset) { … } static int davinci_mcasp_gpio_get(struct gpio_chip *chip, unsigned offset) { … } static int davinci_mcasp_gpio_get_direction(struct gpio_chip *chip, unsigned offset) { … } static const struct gpio_chip davinci_mcasp_template_chip = …; static int davinci_mcasp_init_gpiochip(struct davinci_mcasp *mcasp) { … } #else /* CONFIG_GPIOLIB */ static inline int davinci_mcasp_init_gpiochip(struct davinci_mcasp *mcasp) { return 0; } #endif /* CONFIG_GPIOLIB */ static int davinci_mcasp_probe(struct platform_device *pdev) { … } static void davinci_mcasp_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM static int davinci_mcasp_runtime_suspend(struct device *dev) { … } static int davinci_mcasp_runtime_resume(struct device *dev) { … } #endif static const struct dev_pm_ops davinci_mcasp_pm_ops = …; static struct platform_driver davinci_mcasp_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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