diff options
Diffstat (limited to 'sound/soc/ux500/ux500_pcm.c')
| -rw-r--r-- | sound/soc/ux500/ux500_pcm.c | 111 |
1 files changed, 18 insertions, 93 deletions
diff --git a/sound/soc/ux500/ux500_pcm.c b/sound/soc/ux500/ux500_pcm.c index ce554de5d9dc..b7f38873d2d8 100644 --- a/sound/soc/ux500/ux500_pcm.c +++ b/sound/soc/ux500/ux500_pcm.c @@ -1,15 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) ST-Ericsson SA 2012 * * Author: Ola Lilja <ola.o.lilja@stericsson.com>, * Roger Nilsson <roger.xr.nilsson@stericsson.com> * for ST-Ericsson. - * - * License terms: - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. */ #include <asm/page.h> @@ -18,7 +13,6 @@ #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/slab.h> -#include <linux/platform_data/dma-ste-dma40.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -28,114 +22,43 @@ #include "ux500_msp_i2s.h" #include "ux500_pcm.h" -#define UX500_PLATFORM_MIN_RATE 8000 -#define UX500_PLATFORM_MAX_RATE 48000 - -#define UX500_PLATFORM_MIN_CHANNELS 1 -#define UX500_PLATFORM_MAX_CHANNELS 8 - #define UX500_PLATFORM_PERIODS_BYTES_MIN 128 #define UX500_PLATFORM_PERIODS_BYTES_MAX (64 * PAGE_SIZE) #define UX500_PLATFORM_PERIODS_MIN 2 #define UX500_PLATFORM_PERIODS_MAX 48 #define UX500_PLATFORM_BUFFER_BYTES_MAX (2048 * PAGE_SIZE) -static const struct snd_pcm_hardware ux500_pcm_hw = { - .info = SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_RESUME | - SNDRV_PCM_INFO_PAUSE, - .formats = SNDRV_PCM_FMTBIT_S16_LE | - SNDRV_PCM_FMTBIT_U16_LE | - SNDRV_PCM_FMTBIT_S16_BE | - SNDRV_PCM_FMTBIT_U16_BE, - .rates = SNDRV_PCM_RATE_KNOT, - .rate_min = UX500_PLATFORM_MIN_RATE, - .rate_max = UX500_PLATFORM_MAX_RATE, - .channels_min = UX500_PLATFORM_MIN_CHANNELS, - .channels_max = UX500_PLATFORM_MAX_CHANNELS, - .buffer_bytes_max = UX500_PLATFORM_BUFFER_BYTES_MAX, - .period_bytes_min = UX500_PLATFORM_PERIODS_BYTES_MIN, - .period_bytes_max = UX500_PLATFORM_PERIODS_BYTES_MAX, - .periods_min = UX500_PLATFORM_PERIODS_MIN, - .periods_max = UX500_PLATFORM_PERIODS_MAX, -}; - -static struct dma_chan *ux500_pcm_request_chan(struct snd_soc_pcm_runtime *rtd, - struct snd_pcm_substream *substream) -{ - struct snd_soc_dai *dai = rtd->cpu_dai; - struct device *dev = dai->dev; - u16 per_data_width, mem_data_width; - struct stedma40_chan_cfg *dma_cfg; - struct ux500_msp_dma_params *dma_params; - - dev_dbg(dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id, - snd_pcm_stream_str(substream)); - - dma_params = snd_soc_dai_get_dma_data(dai, substream); - dma_cfg = dma_params->dma_cfg; - - mem_data_width = DMA_SLAVE_BUSWIDTH_2_BYTES; - - switch (dma_params->data_size) { - case 32: - per_data_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - break; - case 16: - per_data_width = DMA_SLAVE_BUSWIDTH_2_BYTES; - break; - case 8: - per_data_width = DMA_SLAVE_BUSWIDTH_1_BYTE; - break; - default: - per_data_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - } - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - dma_cfg->src_info.data_width = mem_data_width; - dma_cfg->dst_info.data_width = per_data_width; - } else { - dma_cfg->src_info.data_width = per_data_width; - dma_cfg->dst_info.data_width = mem_data_width; - } - - return snd_dmaengine_pcm_request_channel(stedma40_filter, dma_cfg); -} - static int ux500_pcm_prepare_slave_config(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config) { - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct ux500_msp_dma_params *dma_params; - struct stedma40_chan_cfg *dma_cfg; + struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); + struct snd_dmaengine_dai_dma_data *snd_dma_params; + dma_addr_t dma_addr; int ret; - dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); - dma_cfg = dma_params->dma_cfg; + snd_dma_params = snd_soc_dai_get_dma_data(snd_soc_rtd_to_cpu(rtd, 0), substream); + dma_addr = snd_dma_params->addr; ret = snd_hwparams_to_dma_slave_config(substream, params, slave_config); if (ret) return ret; slave_config->dst_maxburst = 4; - slave_config->dst_addr_width = dma_cfg->dst_info.data_width; slave_config->src_maxburst = 4; - slave_config->src_addr_width = dma_cfg->src_info.data_width; + + slave_config->src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + slave_config->dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - slave_config->dst_addr = dma_params->tx_rx_addr; + slave_config->dst_addr = dma_addr; else - slave_config->src_addr = dma_params->tx_rx_addr; + slave_config->src_addr = dma_addr; return 0; } -static const struct snd_dmaengine_pcm_config ux500_dmaengine_pcm_config = { - .pcm_hardware = &ux500_pcm_hw, - .compat_request_channel = ux500_pcm_request_chan, - .prealloc_buffer_size = 128 * 1024, +static const struct snd_dmaengine_pcm_config ux500_dmaengine_of_pcm_config = { .prepare_slave_config = ux500_pcm_prepare_slave_config, }; @@ -144,10 +67,7 @@ int ux500_pcm_register_platform(struct platform_device *pdev) int ret; ret = snd_dmaengine_pcm_register(&pdev->dev, - &ux500_dmaengine_pcm_config, - SND_DMAENGINE_PCM_FLAG_NO_RESIDUE | - SND_DMAENGINE_PCM_FLAG_COMPAT | - SND_DMAENGINE_PCM_FLAG_NO_DT); + &ux500_dmaengine_of_pcm_config, 0); if (ret < 0) { dev_err(&pdev->dev, "%s: ERROR: Failed to register platform '%s' (%d)!\n", @@ -165,3 +85,8 @@ int ux500_pcm_unregister_platform(struct platform_device *pdev) return 0; } EXPORT_SYMBOL_GPL(ux500_pcm_unregister_platform); + +MODULE_AUTHOR("Ola Lilja"); +MODULE_AUTHOR("Roger Nilsson"); +MODULE_DESCRIPTION("ASoC UX500 driver"); +MODULE_LICENSE("GPL v2"); |