// SPDX-License-Identifier: GPL-2.0 // // Fifo-attached Serial Interface (FSI) support for SH7724 // // Copyright (C) 2009 Renesas Solutions Corp. // Kuninori Morimoto <[email protected]> // // Based on ssi.c // Copyright (c) 2007 Manuel Lauss <[email protected]> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/pm_runtime.h> #include <linux/io.h> #include <linux/of.h> #include <linux/scatterlist.h> #include <linux/sh_dma.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/workqueue.h> #include <sound/soc.h> #include <sound/pcm_params.h> #include <sound/sh_fsi.h> /* PortA/PortB register */ #define REG_DO_FMT … #define REG_DOFF_CTL … #define REG_DOFF_ST … #define REG_DI_FMT … #define REG_DIFF_CTL … #define REG_DIFF_ST … #define REG_CKG1 … #define REG_CKG2 … #define REG_DIDT … #define REG_DODT … #define REG_MUTE_ST … #define REG_OUT_DMAC … #define REG_OUT_SEL … #define REG_IN_DMAC … /* master register */ #define MST_CLK_RST … #define MST_SOFT_RST … #define MST_FIFO_SZ … /* core register (depend on FSI version) */ #define A_MST_CTLR … #define B_MST_CTLR … #define CPU_INT_ST … #define CPU_IEMSK … #define CPU_IMSK … #define INT_ST … #define IEMSK … #define IMSK … /* DO_FMT */ /* DI_FMT */ #define CR_BWS_MASK … #define CR_BWS_24 … #define CR_BWS_16 … #define CR_BWS_20 … #define CR_DTMD_PCM … #define CR_DTMD_SPDIF_PCM … #define CR_DTMD_SPDIF_STREAM … #define CR_MONO … #define CR_MONO_D … #define CR_PCM … #define CR_I2S … #define CR_TDM … #define CR_TDM_D … /* OUT_DMAC */ /* IN_DMAC */ #define VDMD_MASK … #define VDMD_FRONT … #define VDMD_BACK … #define VDMD_STREAM … #define DMA_ON … /* DOFF_CTL */ /* DIFF_CTL */ #define IRQ_HALF … #define FIFO_CLR … /* DOFF_ST */ #define ERR_OVER … #define ERR_UNDER … #define ST_ERR … /* CKG1 */ #define ACKMD_MASK … #define BPFMD_MASK … #define DIMD … #define DOMD … /* A/B MST_CTLR */ #define BP … #define SE … /* CLK_RST */ #define CRB … #define CRA … /* IO SHIFT / MACRO */ #define BI_SHIFT … #define BO_SHIFT … #define AI_SHIFT … #define AO_SHIFT … #define AB_IO(param, shift) … /* SOFT_RST */ #define PBSR … #define PASR … #define IR … #define FSISR … /* OUT_SEL (FSI2) */ #define DMMD … /* 1: Biphase and serial */ /* FIFO_SZ */ #define FIFO_SZ_MASK … #define FSI_RATES … #define FSI_FMTS … /* * bus options * * 0x000000BA * * A : sample widtht 16bit setting * B : sample widtht 24bit setting */ #define SHIFT_16DATA … #define SHIFT_24DATA … #define PACKAGE_24BITBUS_BACK … #define PACKAGE_24BITBUS_FRONT … #define PACKAGE_16BITBUS_STREAM … #define BUSOP_SET(s, a) … #define BUSOP_GET(s, a) … /* * FSI driver use below type name for variable * * xxx_num : number of data * xxx_pos : position of data * xxx_capa : capacity of data */ /* * period/frame/sample image * * ex) PCM (2ch) * * period pos period pos * [n] [n + 1] * |<-------------------- period--------------------->| * ==|============================================ ... =|== * | | * ||<----- frame ----->|<------ frame ----->| ... | * |+--------------------+--------------------+- ... | * ||[ sample ][ sample ]|[ sample ][ sample ]| ... | * |+--------------------+--------------------+- ... | * ==|============================================ ... =|== */ /* * FSI FIFO image * * | | * | | * | [ sample ] | * | [ sample ] | * | [ sample ] | * | [ sample ] | * --> go to codecs */ /* * FSI clock * * FSIxCLK [CPG] (ick) -------> | * |-> FSI_DIV (div)-> FSI2 * FSIxCK [external] (xck) ---> | */ /* * struct */ struct fsi_stream_handler; struct fsi_stream { … }; struct fsi_clk { … }; struct fsi_priv { … }; struct fsi_stream_handler { … }; #define fsi_stream_handler_call(io, func, args...) … struct fsi_core { … }; struct fsi_master { … }; static inline int fsi_stream_is_play(struct fsi_priv *fsi, struct fsi_stream *io) { … } /* * basic read write function */ static void __fsi_reg_write(u32 __iomem *reg, u32 data) { … } static u32 __fsi_reg_read(u32 __iomem *reg) { … } static void __fsi_reg_mask_set(u32 __iomem *reg, u32 mask, u32 data) { … } #define fsi_reg_write(p, r, d) … #define fsi_reg_read(p, r) … #define fsi_reg_mask_set(p, r, m, d) … #define fsi_master_read(p, r) … #define fsi_core_read(p, r) … static u32 _fsi_master_read(struct fsi_master *master, u32 reg) { … } #define fsi_master_mask_set(p, r, m, d) … #define fsi_core_mask_set(p, r, m, d) … static void _fsi_master_mask_set(struct fsi_master *master, u32 reg, u32 mask, u32 data) { … } /* * basic function */ static int fsi_version(struct fsi_master *master) { … } static struct fsi_master *fsi_get_master(struct fsi_priv *fsi) { … } static int fsi_is_clk_master(struct fsi_priv *fsi) { … } static int fsi_is_port_a(struct fsi_priv *fsi) { … } static int fsi_is_spdif(struct fsi_priv *fsi) { … } static int fsi_is_enable_stream(struct fsi_priv *fsi) { … } static int fsi_is_play(struct snd_pcm_substream *substream) { … } static struct snd_soc_dai *fsi_get_dai(struct snd_pcm_substream *substream) { … } static struct fsi_priv *fsi_get_priv_frm_dai(struct snd_soc_dai *dai) { … } static struct fsi_priv *fsi_get_priv(struct snd_pcm_substream *substream) { … } static u32 fsi_get_port_shift(struct fsi_priv *fsi, struct fsi_stream *io) { … } static int fsi_frame2sample(struct fsi_priv *fsi, int frames) { … } static int fsi_sample2frame(struct fsi_priv *fsi, int samples) { … } static int fsi_get_current_fifo_samples(struct fsi_priv *fsi, struct fsi_stream *io) { … } static void fsi_count_fifo_err(struct fsi_priv *fsi) { … } /* * fsi_stream_xx() function */ static inline struct fsi_stream *fsi_stream_get(struct fsi_priv *fsi, struct snd_pcm_substream *substream) { … } static int fsi_stream_is_working(struct fsi_priv *fsi, struct fsi_stream *io) { … } static struct fsi_priv *fsi_stream_to_priv(struct fsi_stream *io) { … } static void fsi_stream_init(struct fsi_priv *fsi, struct fsi_stream *io, struct snd_pcm_substream *substream) { … } static void fsi_stream_quit(struct fsi_priv *fsi, struct fsi_stream *io) { … } static int fsi_stream_transfer(struct fsi_stream *io) { … } #define fsi_stream_start(fsi, io) … #define fsi_stream_stop(fsi, io) … static int fsi_stream_probe(struct fsi_priv *fsi, struct device *dev) { … } static int fsi_stream_remove(struct fsi_priv *fsi) { … } /* * format/bus/dma setting */ static void fsi_format_bus_setup(struct fsi_priv *fsi, struct fsi_stream *io, u32 bus, struct device *dev) { … } /* * irq function */ static void fsi_irq_enable(struct fsi_priv *fsi, struct fsi_stream *io) { … } static void fsi_irq_disable(struct fsi_priv *fsi, struct fsi_stream *io) { … } static u32 fsi_irq_get_status(struct fsi_master *master) { … } static void fsi_irq_clear_status(struct fsi_priv *fsi) { … } /* * SPDIF master clock function * * These functions are used later FSI2 */ static void fsi_spdif_clk_ctrl(struct fsi_priv *fsi, int enable) { … } /* * clock function */ static int fsi_clk_init(struct device *dev, struct fsi_priv *fsi, int xck, int ick, int div, int (*set_rate)(struct device *dev, struct fsi_priv *fsi)) { … } #define fsi_clk_invalid(fsi) … static void fsi_clk_valid(struct fsi_priv *fsi, unsigned long rate) { … } static int fsi_clk_is_valid(struct fsi_priv *fsi) { … } static int fsi_clk_enable(struct device *dev, struct fsi_priv *fsi) { … } static int fsi_clk_disable(struct device *dev, struct fsi_priv *fsi) { … } static int fsi_clk_set_ackbpf(struct device *dev, struct fsi_priv *fsi, int ackmd, int bpfmd) { … } static int fsi_clk_set_rate_external(struct device *dev, struct fsi_priv *fsi) { … } static int fsi_clk_set_rate_cpg(struct device *dev, struct fsi_priv *fsi) { … } static void fsi_pointer_update(struct fsi_stream *io, int size) { … } /* * pio data transfer handler */ static void fsi_pio_push16(struct fsi_priv *fsi, u8 *_buf, int samples) { … } static void fsi_pio_pop16(struct fsi_priv *fsi, u8 *_buf, int samples) { … } static void fsi_pio_push32(struct fsi_priv *fsi, u8 *_buf, int samples) { … } static void fsi_pio_pop32(struct fsi_priv *fsi, u8 *_buf, int samples) { … } static u8 *fsi_pio_get_area(struct fsi_priv *fsi, struct fsi_stream *io) { … } static int fsi_pio_transfer(struct fsi_priv *fsi, struct fsi_stream *io, void (*run16)(struct fsi_priv *fsi, u8 *buf, int samples), void (*run32)(struct fsi_priv *fsi, u8 *buf, int samples), int samples) { … } static int fsi_pio_pop(struct fsi_priv *fsi, struct fsi_stream *io) { … } static int fsi_pio_push(struct fsi_priv *fsi, struct fsi_stream *io) { … } static int fsi_pio_start_stop(struct fsi_priv *fsi, struct fsi_stream *io, int enable) { … } static int fsi_pio_push_init(struct fsi_priv *fsi, struct fsi_stream *io) { … } static int fsi_pio_pop_init(struct fsi_priv *fsi, struct fsi_stream *io) { … } static struct fsi_stream_handler fsi_pio_push_handler = …; static struct fsi_stream_handler fsi_pio_pop_handler = …; static irqreturn_t fsi_interrupt(int irq, void *data) { … } /* * dma data transfer handler */ static int fsi_dma_init(struct fsi_priv *fsi, struct fsi_stream *io) { … } static void fsi_dma_complete(void *data) { … } static int fsi_dma_transfer(struct fsi_priv *fsi, struct fsi_stream *io) { … } static int fsi_dma_push_start_stop(struct fsi_priv *fsi, struct fsi_stream *io, int start) { … } static int fsi_dma_probe(struct fsi_priv *fsi, struct fsi_stream *io, struct device *dev) { … } static int fsi_dma_remove(struct fsi_priv *fsi, struct fsi_stream *io) { … } static struct fsi_stream_handler fsi_dma_push_handler = …; /* * dai ops */ static void fsi_fifo_init(struct fsi_priv *fsi, struct fsi_stream *io, struct device *dev) { … } static int fsi_hw_startup(struct fsi_priv *fsi, struct fsi_stream *io, struct device *dev) { … } static int fsi_hw_shutdown(struct fsi_priv *fsi, struct device *dev) { … } static int fsi_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static void fsi_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { … } static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { … } static int fsi_set_fmt_dai(struct fsi_priv *fsi, unsigned int fmt) { … } static int fsi_set_fmt_spdif(struct fsi_priv *fsi) { … } static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { … } static int fsi_dai_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { … } /* * Select below from Sound Card, not auto * SND_SOC_DAIFMT_CBC_CFC * SND_SOC_DAIFMT_CBP_CFP */ static const u64 fsi_dai_formats = …; static const struct snd_soc_dai_ops fsi_dai_ops = …; /* * pcm ops */ static const struct snd_pcm_hardware fsi_pcm_hardware = …; static int fsi_pcm_open(struct snd_soc_component *component, struct snd_pcm_substream *substream) { … } static snd_pcm_uframes_t fsi_pointer(struct snd_soc_component *component, struct snd_pcm_substream *substream) { … } /* * snd_soc_component */ #define PREALLOC_BUFFER … #define PREALLOC_BUFFER_MAX … static int fsi_pcm_new(struct snd_soc_component *component, struct snd_soc_pcm_runtime *rtd) { … } /* * alsa struct */ static struct snd_soc_dai_driver fsi_soc_dai[] = …; static const struct snd_soc_component_driver fsi_soc_component = …; /* * platform function */ static void fsi_of_parse(char *name, struct device_node *np, struct sh_fsi_port_info *info, struct device *dev) { … } static void fsi_port_info_init(struct fsi_priv *fsi, struct sh_fsi_port_info *info) { … } static void fsi_handler_init(struct fsi_priv *fsi, struct sh_fsi_port_info *info) { … } static const struct fsi_core fsi1_core = …; static const struct fsi_core fsi2_core = …; static const struct of_device_id fsi_of_match[] = …; MODULE_DEVICE_TABLE(of, fsi_of_match); static const struct platform_device_id fsi_id_table[] = …; MODULE_DEVICE_TABLE(platform, fsi_id_table); static int fsi_probe(struct platform_device *pdev) { … } static void fsi_remove(struct platform_device *pdev) { … } static void __fsi_suspend(struct fsi_priv *fsi, struct fsi_stream *io, struct device *dev) { … } static void __fsi_resume(struct fsi_priv *fsi, struct fsi_stream *io, struct device *dev) { … } static int fsi_suspend(struct device *dev) { … } static int fsi_resume(struct device *dev) { … } static const struct dev_pm_ops fsi_pm_ops = …; static struct platform_driver fsi_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_ALIAS(…) …;
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