From: Kuninori Morimoto Date: Fri, 3 Feb 2012 08:55:55 +0000 (-0800) Subject: ASoC: fsi: add fsi_stream_handler and PIO handler X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5e97313ac483f03a9af661aada356980fe310e0d;p=linux-beck.git ASoC: fsi: add fsi_stream_handler and PIO handler This patch adds struct fsi_stream_handler and defined fsi_pio_push/pop_handler. these are controled by fsi_steam_xxx() function. Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown --- diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c index 24dbe165eda8..b02886ad6f87 100644 --- a/sound/soc/sh/fsi.c +++ b/sound/soc/sh/fsi.c @@ -159,18 +159,27 @@ typedef int (*set_rate_func)(struct device *dev, int is_porta, int rate, int ena * struct */ +struct fsi_stream_handler; struct fsi_stream { - struct snd_pcm_substream *substream; + /* + * these are initialized by fsi_stream_init() + */ + struct snd_pcm_substream *substream; int fifo_sample_capa; /* sample capacity of FSI FIFO */ int buff_sample_capa; /* sample capacity of ALSA buffer */ int buff_sample_pos; /* sample position of ALSA buffer */ int period_samples; /* sample number / 1 period */ int period_pos; /* current period position */ int sample_width; /* sample width */ - int uerr_num; int oerr_num; + + /* + * thse are initialized by fsi_handler_init() + */ + struct fsi_stream_handler *handler; + struct fsi_priv *priv; }; struct fsi_priv { @@ -190,6 +199,16 @@ struct fsi_priv { long rate; }; +struct fsi_stream_handler { + int (*probe)(struct fsi_priv *fsi, struct fsi_stream *io); + int (*transfer)(struct fsi_priv *fsi, struct fsi_stream *io); + int (*remove)(struct fsi_priv *fsi, struct fsi_stream *io); +}; +#define fsi_stream_handler_call(io, func, args...) \ + (!(io) ? -ENODEV : \ + !((io)->handler->func) ? 0 : \ + (io)->handler->func(args)) + struct fsi_core { int ver; @@ -435,6 +454,11 @@ static int fsi_stream_is_working(struct fsi_priv *fsi, return ret; } +static struct fsi_priv *fsi_stream_to_priv(struct fsi_stream *io) +{ + return io->priv; +} + static void fsi_stream_init(struct fsi_priv *fsi, int is_play, struct snd_pcm_substream *substream) @@ -482,6 +506,53 @@ static void fsi_stream_quit(struct fsi_priv *fsi, int is_play) spin_unlock_irqrestore(&master->lock, flags); } +static int fsi_stream_transfer(struct fsi_stream *io) +{ + struct fsi_priv *fsi = fsi_stream_to_priv(io); + if (!fsi) + return -EIO; + + return fsi_stream_handler_call(io, transfer, fsi, io); +} + +static int fsi_stream_probe(struct fsi_priv *fsi) +{ + struct fsi_stream *io; + int ret1, ret2; + + io = &fsi->playback; + ret1 = fsi_stream_handler_call(io, probe, fsi, io); + + io = &fsi->capture; + ret2 = fsi_stream_handler_call(io, probe, fsi, io); + + if (ret1 < 0) + return ret1; + if (ret2 < 0) + return ret2; + + return 0; +} + +static int fsi_stream_remove(struct fsi_priv *fsi) +{ + struct fsi_stream *io; + int ret1, ret2; + + io = &fsi->playback; + ret1 = fsi_stream_handler_call(io, remove, fsi, io); + + io = &fsi->capture; + ret2 = fsi_stream_handler_call(io, remove, fsi, io); + + if (ret1 < 0) + return ret1; + if (ret2 < 0) + return ret2; + + return 0; +} + /* * pio function */ @@ -743,13 +814,11 @@ static int fsi_fifo_data_ctrl(struct fsi_priv *fsi, struct fsi_stream *io, return 0; } -static int fsi_data_pop(struct fsi_priv *fsi) +static int fsi_pio_pop(struct fsi_priv *fsi, struct fsi_stream *io) { - int is_play = 0; int sample_residues; /* samples in FSI fifo */ int sample_space; /* ALSA free samples space */ int samples; - struct fsi_stream *io = fsi_stream_get(fsi, is_play); sample_residues = fsi_get_current_fifo_samples(fsi, io); sample_space = io->buff_sample_capa - io->buff_sample_pos; @@ -762,13 +831,11 @@ static int fsi_data_pop(struct fsi_priv *fsi) samples); } -static int fsi_data_push(struct fsi_priv *fsi) +static int fsi_pio_push(struct fsi_priv *fsi, struct fsi_stream *io) { - int is_play = 1; int sample_residues; /* ALSA residue samples */ int sample_space; /* FSI fifo free samples space */ int samples; - struct fsi_stream *io = fsi_stream_get(fsi, is_play); sample_residues = io->buff_sample_capa - io->buff_sample_pos; sample_space = io->fifo_sample_capa - @@ -782,6 +849,14 @@ static int fsi_data_push(struct fsi_priv *fsi) samples); } +static struct fsi_stream_handler fsi_pio_push_handler = { + .transfer = fsi_pio_push, +}; + +static struct fsi_stream_handler fsi_pio_pop_handler = { + .transfer = fsi_pio_pop, +}; + static irqreturn_t fsi_interrupt(int irq, void *data) { struct fsi_master *master = data; @@ -792,13 +867,13 @@ static irqreturn_t fsi_interrupt(int irq, void *data) fsi_master_mask_set(master, SOFT_RST, IR, IR); if (int_st & AB_IO(1, AO_SHIFT)) - fsi_data_push(&master->fsia); + fsi_stream_transfer(&master->fsia.playback); if (int_st & AB_IO(1, BO_SHIFT)) - fsi_data_push(&master->fsib); + fsi_stream_transfer(&master->fsib.playback); if (int_st & AB_IO(1, AI_SHIFT)) - fsi_data_pop(&master->fsia); + fsi_stream_transfer(&master->fsia.capture); if (int_st & AB_IO(1, BI_SHIFT)) - fsi_data_pop(&master->fsib); + fsi_stream_transfer(&master->fsib.capture); fsi_count_fifo_err(&master->fsia); fsi_count_fifo_err(&master->fsib); @@ -955,14 +1030,16 @@ static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct fsi_priv *fsi = fsi_get_priv(substream); + struct fsi_stream *io = fsi_stream_get(fsi, fsi_is_play(substream)); int is_play = fsi_is_play(substream); int ret = 0; switch (cmd) { case SNDRV_PCM_TRIGGER_START: fsi_stream_init(fsi, is_play, substream); - ret = is_play ? fsi_data_push(fsi) : fsi_data_pop(fsi); - fsi_port_start(fsi, is_play); + ret = fsi_stream_transfer(io); + if (0 == ret) + fsi_port_start(fsi, is_play); break; case SNDRV_PCM_TRIGGER_STOP: fsi_port_stop(fsi, is_play); @@ -1224,6 +1301,13 @@ static struct snd_soc_platform_driver fsi_soc_platform = { /* * platform function */ +static void fsi_handler_init(struct fsi_priv *fsi) +{ + fsi->playback.handler = &fsi_pio_push_handler; /* default PIO */ + fsi->playback.priv = fsi; + fsi->capture.handler = &fsi_pio_pop_handler; /* default PIO */ + fsi->capture.priv = fsi; +} static int fsi_probe(struct platform_device *pdev) { @@ -1270,10 +1354,22 @@ static int fsi_probe(struct platform_device *pdev) /* FSI A setting */ master->fsia.base = master->base; master->fsia.master = master; + fsi_handler_init(&master->fsia); + ret = fsi_stream_probe(&master->fsia); + if (ret < 0) { + dev_err(&pdev->dev, "FSIA stream probe failed\n"); + goto exit_iounmap; + } /* FSI B setting */ master->fsib.base = master->base + 0x40; master->fsib.master = master; + fsi_handler_init(&master->fsib); + ret = fsi_stream_probe(&master->fsib); + if (ret < 0) { + dev_err(&pdev->dev, "FSIB stream probe failed\n"); + goto exit_fsia; + } pm_runtime_enable(&pdev->dev); dev_set_drvdata(&pdev->dev, master); @@ -1282,7 +1378,7 @@ static int fsi_probe(struct platform_device *pdev) id_entry->name, master); if (ret) { dev_err(&pdev->dev, "irq request err\n"); - goto exit_iounmap; + goto exit_fsib; } ret = snd_soc_register_platform(&pdev->dev, &fsi_soc_platform); @@ -1304,6 +1400,10 @@ exit_snd_soc: snd_soc_unregister_platform(&pdev->dev); exit_free_irq: free_irq(irq, master); +exit_fsib: + fsi_stream_remove(&master->fsib); +exit_fsia: + fsi_stream_remove(&master->fsia); exit_iounmap: iounmap(master->base); pm_runtime_disable(&pdev->dev); @@ -1326,6 +1426,9 @@ static int fsi_remove(struct platform_device *pdev) snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(fsi_soc_dai)); snd_soc_unregister_platform(&pdev->dev); + fsi_stream_remove(&master->fsia); + fsi_stream_remove(&master->fsib); + iounmap(master->base); kfree(master);