diff options
Diffstat (limited to 'sound/soc/ti/davinci-vcif.c')
| -rw-r--r-- | sound/soc/ti/davinci-vcif.c | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/sound/soc/ti/davinci-vcif.c b/sound/soc/ti/davinci-vcif.c deleted file mode 100644 index f810123cc407..000000000000 --- a/sound/soc/ti/davinci-vcif.c +++ /dev/null @@ -1,246 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * ALSA SoC Voice Codec Interface for TI DAVINCI processor - * - * Copyright (C) 2010 Texas Instruments. - * - * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com> - */ - -#include <linux/init.h> -#include <linux/module.h> -#include <linux/device.h> -#include <linux/delay.h> -#include <linux/slab.h> -#include <linux/io.h> -#include <linux/mfd/davinci_voicecodec.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 "davinci-i2s.h" - -#define MOD_REG_BIT(val, mask, set) do { \ - if (set) { \ - val |= mask; \ - } else { \ - val &= ~mask; \ - } \ -} while (0) - -struct davinci_vcif_dev { - struct davinci_vc *davinci_vc; - struct snd_dmaengine_dai_dma_data dma_data[2]; - int dma_request[2]; -}; - -static void davinci_vcif_start(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct davinci_vcif_dev *davinci_vcif_dev = - snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0)); - struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc; - u32 w; - - /* Start the sample generator and enable transmitter/receiver */ - w = readl(davinci_vc->base + DAVINCI_VC_CTRL); - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 0); - else - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 0); - - writel(w, davinci_vc->base + DAVINCI_VC_CTRL); -} - -static void davinci_vcif_stop(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct davinci_vcif_dev *davinci_vcif_dev = - snd_soc_dai_get_drvdata(asoc_rtd_to_cpu(rtd, 0)); - struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc; - u32 w; - - /* Reset transmitter/receiver and sample rate/frame sync generators */ - w = readl(davinci_vc->base + DAVINCI_VC_CTRL); - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 1); - else - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 1); - - writel(w, davinci_vc->base + DAVINCI_VC_CTRL); -} - -static int davinci_vcif_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - struct snd_soc_dai *dai) -{ - struct davinci_vcif_dev *davinci_vcif_dev = snd_soc_dai_get_drvdata(dai); - struct davinci_vc *davinci_vc = davinci_vcif_dev->davinci_vc; - u32 w; - - /* Restart the codec before setup */ - davinci_vcif_stop(substream); - davinci_vcif_start(substream); - - /* General line settings */ - writel(DAVINCI_VC_CTRL_MASK, davinci_vc->base + DAVINCI_VC_CTRL); - - writel(DAVINCI_VC_INT_MASK, davinci_vc->base + DAVINCI_VC_INTCLR); - - writel(DAVINCI_VC_INT_MASK, davinci_vc->base + DAVINCI_VC_INTEN); - - w = readl(davinci_vc->base + DAVINCI_VC_CTRL); - - /* Determine xfer data type */ - switch (params_format(params)) { - case SNDRV_PCM_FORMAT_U8: - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 | - DAVINCI_VC_CTRL_RD_UNSIGNED | - DAVINCI_VC_CTRL_WD_BITS_8 | - DAVINCI_VC_CTRL_WD_UNSIGNED, 1); - break; - case SNDRV_PCM_FORMAT_S8: - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 | - DAVINCI_VC_CTRL_WD_BITS_8, 1); - - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_UNSIGNED | - DAVINCI_VC_CTRL_WD_UNSIGNED, 0); - break; - case SNDRV_PCM_FORMAT_S16_LE: - MOD_REG_BIT(w, DAVINCI_VC_CTRL_RD_BITS_8 | - DAVINCI_VC_CTRL_RD_UNSIGNED | - DAVINCI_VC_CTRL_WD_BITS_8 | - DAVINCI_VC_CTRL_WD_UNSIGNED, 0); - break; - default: - printk(KERN_WARNING "davinci-vcif: unsupported PCM format"); - return -EINVAL; - } - - writel(w, davinci_vc->base + DAVINCI_VC_CTRL); - - return 0; -} - -static int davinci_vcif_trigger(struct snd_pcm_substream *substream, int cmd, - struct snd_soc_dai *dai) -{ - int ret = 0; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - case SNDRV_PCM_TRIGGER_RESUME: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - davinci_vcif_start(substream); - break; - case SNDRV_PCM_TRIGGER_STOP: - case SNDRV_PCM_TRIGGER_SUSPEND: - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - davinci_vcif_stop(substream); - break; - default: - ret = -EINVAL; - } - - return ret; -} - -#define DAVINCI_VCIF_RATES SNDRV_PCM_RATE_8000_48000 - -static const struct snd_soc_dai_ops davinci_vcif_dai_ops = { - .trigger = davinci_vcif_trigger, - .hw_params = davinci_vcif_hw_params, -}; - -static int davinci_vcif_dai_probe(struct snd_soc_dai *dai) -{ - struct davinci_vcif_dev *dev = snd_soc_dai_get_drvdata(dai); - - dai->playback_dma_data = &dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK]; - dai->capture_dma_data = &dev->dma_data[SNDRV_PCM_STREAM_CAPTURE]; - - return 0; -} - -static struct snd_soc_dai_driver davinci_vcif_dai = { - .probe = davinci_vcif_dai_probe, - .playback = { - .channels_min = 1, - .channels_max = 2, - .rates = DAVINCI_VCIF_RATES, - .formats = SNDRV_PCM_FMTBIT_S16_LE,}, - .capture = { - .channels_min = 1, - .channels_max = 2, - .rates = DAVINCI_VCIF_RATES, - .formats = SNDRV_PCM_FMTBIT_S16_LE,}, - .ops = &davinci_vcif_dai_ops, - -}; - -static const struct snd_soc_component_driver davinci_vcif_component = { - .name = "davinci-vcif", -}; - -static int davinci_vcif_probe(struct platform_device *pdev) -{ - struct davinci_vc *davinci_vc = pdev->dev.platform_data; - struct davinci_vcif_dev *davinci_vcif_dev; - int ret; - - davinci_vcif_dev = devm_kzalloc(&pdev->dev, - sizeof(struct davinci_vcif_dev), - GFP_KERNEL); - if (!davinci_vcif_dev) - return -ENOMEM; - - /* DMA tx params */ - davinci_vcif_dev->davinci_vc = davinci_vc; - davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].filter_data = - &davinci_vc->davinci_vcif.dma_tx_channel; - davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr = - davinci_vc->davinci_vcif.dma_tx_addr; - - /* DMA rx params */ - davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].filter_data = - &davinci_vc->davinci_vcif.dma_rx_channel; - davinci_vcif_dev->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr = - davinci_vc->davinci_vcif.dma_rx_addr; - - dev_set_drvdata(&pdev->dev, davinci_vcif_dev); - - ret = devm_snd_soc_register_component(&pdev->dev, - &davinci_vcif_component, - &davinci_vcif_dai, 1); - if (ret != 0) { - dev_err(&pdev->dev, "could not register dai\n"); - return ret; - } - - ret = edma_pcm_platform_register(&pdev->dev); - if (ret) { - dev_err(&pdev->dev, "register PCM failed: %d\n", ret); - return ret; - } - - return 0; -} - -static struct platform_driver davinci_vcif_driver = { - .probe = davinci_vcif_probe, - .driver = { - .name = "davinci-vcif", - }, -}; - -module_platform_driver(davinci_vcif_driver); - -MODULE_AUTHOR("Miguel Aguilar"); -MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC Voice Codec Interface"); -MODULE_LICENSE("GPL"); |