| /* |
| * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de> |
| * |
| * This code is based on code copyrighted by Freescale, |
| * Liam Girdwood, Javier Martin and probably others. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| */ |
| |
| #ifndef _IMX_PCM_H |
| #define _IMX_PCM_H |
| |
| #include <linux/platform_data/dma-imx.h> |
| |
| /* |
| * Do not change this as the FIQ handler depends on this size |
| */ |
| #define IMX_SSI_DMABUF_SIZE (64 * 1024) |
| |
| #define IMX_DEFAULT_DMABUF_SIZE (64 * 1024) |
| #define IMX_SAI_DMABUF_SIZE (64 * 1024) |
| #define IMX_SPDIF_DMABUF_SIZE (64 * 1024) |
| #define IMX_ESAI_DMABUF_SIZE (256 * 1024) |
| |
| static inline void |
| imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data, |
| int dma, enum sdma_peripheral_type peripheral_type) |
| { |
| dma_data->dma_request = dma; |
| dma_data->priority = DMA_PRIO_HIGH; |
| dma_data->peripheral_type = peripheral_type; |
| } |
| |
| struct imx_pcm_fiq_params { |
| int irq; |
| void __iomem *base; |
| |
| /* Pointer to original ssi driver to setup tx rx sizes */ |
| struct snd_dmaengine_dai_dma_data *dma_params_rx; |
| struct snd_dmaengine_dai_dma_data *dma_params_tx; |
| }; |
| |
| #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_RPMSG) |
| int imx_rpmsg_platform_register(struct device *dev); |
| #else |
| static inline int imx_rpmsg_platform_register(struct device *dev) |
| { |
| return -ENODEV; |
| } |
| #endif |
| |
| #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA) |
| int imx_pcm_dma_init(struct platform_device *pdev, size_t size); |
| int imx_pcm_platform_register(struct device *dev); |
| #else |
| static inline int imx_pcm_dma_init(struct platform_device *pdev, size_t size) |
| { |
| return -ENODEV; |
| } |
| static inline int imx_pcm_platform_register(struct device *dev) |
| { |
| return -ENODEV; |
| } |
| #endif |
| |
| #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ) |
| int imx_pcm_fiq_init(struct platform_device *pdev, |
| struct imx_pcm_fiq_params *params); |
| void imx_pcm_fiq_exit(struct platform_device *pdev); |
| #else |
| static inline int imx_pcm_fiq_init(struct platform_device *pdev, |
| struct imx_pcm_fiq_params *params) |
| { |
| return -ENODEV; |
| } |
| |
| static inline void imx_pcm_fiq_exit(struct platform_device *pdev) |
| { |
| } |
| #endif |
| |
| static inline void imx_pcm_stream_trigger(struct snd_pcm_substream *s, int tr) |
| { |
| if (s->runtime->status->state == SNDRV_PCM_STATE_RUNNING && s->ops) |
| s->ops->trigger(s, tr); |
| } |
| |
| static inline void imx_stop_lock_pcm_streams(struct snd_pcm_substream **s, |
| int count, unsigned long *flags) |
| { |
| int i; |
| |
| local_irq_save(*flags); |
| for (i = 0; i < count; i++) { |
| if (!s[i]) |
| continue; |
| snd_pcm_stream_lock(s[i]); |
| imx_pcm_stream_trigger(s[i], SNDRV_PCM_TRIGGER_STOP); |
| } |
| } |
| |
| static inline void imx_start_unlock_pcm_streams(struct snd_pcm_substream **s, |
| int count, unsigned long *flags) |
| { |
| int i; |
| |
| for (i = count - 1; i >= 0; i--) { |
| if (!s[i]) |
| continue; |
| imx_pcm_stream_trigger(s[i], SNDRV_PCM_TRIGGER_START); |
| snd_pcm_stream_unlock(s[i]); |
| } |
| local_irq_restore(*flags); |
| } |
| |
| |
| #endif /* _IMX_PCM_H */ |
