+++ /dev/null
-/* sound/soc/s3c24xx/s3c64xx-i2s-v4.c
- *
- * ALSA SoC Audio Layer - S3C64XX I2Sv4 driver
- * Copyright (c) 2010 Samsung Electronics Co. Ltd
- * Author: Jaswinder Singh <jassi.brar@samsung.com>
- *
- * 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 <linux/clk.h>
-#include <linux/gpio.h>
-#include <linux/io.h>
-
-#include <sound/soc.h>
-#include <sound/pcm_params.h>
-
-#include <plat/audio.h>
-
-#include <mach/map.h>
-#include <mach/dma.h>
-
-#include "s3c-dma.h"
-#include "regs-i2s-v2.h"
-#include "s3c64xx-i2s.h"
-
-static struct s3c2410_dma_client s3c64xx_dma_client_out = {
- .name = "I2Sv4 PCM Stereo out"
-};
-
-static struct s3c2410_dma_client s3c64xx_dma_client_in = {
- .name = "I2Sv4 PCM Stereo in"
-};
-
-static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_out;
-static struct s3c_dma_params s3c64xx_i2sv4_pcm_stereo_in;
-static struct s3c_i2sv2_info s3c64xx_i2sv4;
-
-static int s3c64xx_i2sv4_probe(struct snd_soc_dai *dai)
-{
- struct s3c_i2sv2_info *i2s = &s3c64xx_i2sv4;
- int ret = 0;
-
- snd_soc_dai_set_drvdata(dai, i2s);
-
- ret = s3c_i2sv2_probe(dai, i2s, i2s->base);
-
- return ret;
-}
-
-static int s3c_i2sv4_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *cpu_dai)
-{
- struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(cpu_dai);
- struct s3c_dma_params *dma_data;
- u32 iismod;
-
- dev_dbg(cpu_dai->dev, "Entered %s\n", __func__);
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- dma_data = i2s->dma_playback;
- else
- dma_data = i2s->dma_capture;
-
- snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
-
- iismod = readl(i2s->regs + S3C2412_IISMOD);
- dev_dbg(cpu_dai->dev, "%s: r: IISMOD: %x\n", __func__, iismod);
-
- iismod &= ~S3C64XX_IISMOD_BLC_MASK;
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S8:
- iismod |= S3C64XX_IISMOD_BLC_8BIT;
- break;
- case SNDRV_PCM_FORMAT_S16_LE:
- break;
- case SNDRV_PCM_FORMAT_S24_LE:
- iismod |= S3C64XX_IISMOD_BLC_24BIT;
- break;
- }
-
- writel(iismod, i2s->regs + S3C2412_IISMOD);
- dev_dbg(cpu_dai->dev, "%s: w: IISMOD: %x\n", __func__, iismod);
-
- return 0;
-}
-
-static struct snd_soc_dai_ops s3c64xx_i2sv4_dai_ops = {
- .hw_params = s3c_i2sv4_hw_params,
-};
-
-static struct snd_soc_dai_driver s3c64xx_i2s_v4_dai = {
- .symmetric_rates = 1,
- .playback = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = S3C64XX_I2S_RATES,
- .formats = S3C64XX_I2S_FMTS,
- },
- .capture = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = S3C64XX_I2S_RATES,
- .formats = S3C64XX_I2S_FMTS,
- },
- .probe = s3c64xx_i2sv4_probe,
- .ops = &s3c64xx_i2sv4_dai_ops,
-};
-
-static __devinit int s3c64xx_i2sv4_dev_probe(struct platform_device *pdev)
-{
- struct s3c_audio_pdata *i2s_pdata;
- struct s3c_i2sv2_info *i2s;
- struct resource *res;
- int ret;
-
- i2s = &s3c64xx_i2sv4;
-
- i2s->feature |= S3C_FEATURE_CDCLKCON;
-
- i2s->dma_capture = &s3c64xx_i2sv4_pcm_stereo_in;
- i2s->dma_playback = &s3c64xx_i2sv4_pcm_stereo_out;
-
- res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- if (!res) {
- dev_err(&pdev->dev, "Unable to get I2S-TX dma resource\n");
- return -ENXIO;
- }
- i2s->dma_playback->channel = res->start;
-
- res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
- if (!res) {
- dev_err(&pdev->dev, "Unable to get I2S-RX dma resource\n");
- return -ENXIO;
- }
- i2s->dma_capture->channel = res->start;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Unable to get I2S SFR address\n");
- return -ENXIO;
- }
-
- if (!request_mem_region(res->start, resource_size(res),
- "s3c64xx-i2s-v4")) {
- dev_err(&pdev->dev, "Unable to request SFR region\n");
- return -EBUSY;
- }
- i2s->dma_capture->dma_addr = res->start + S3C2412_IISRXD;
- i2s->dma_playback->dma_addr = res->start + S3C2412_IISTXD;
-
- i2s->dma_capture->client = &s3c64xx_dma_client_in;
- i2s->dma_capture->dma_size = 4;
- i2s->dma_playback->client = &s3c64xx_dma_client_out;
- i2s->dma_playback->dma_size = 4;
-
- i2s->base = res->start;
-
- i2s_pdata = pdev->dev.platform_data;
- if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
- dev_err(&pdev->dev, "Unable to configure gpio\n");
- return -EINVAL;
- }
-
- i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
- if (IS_ERR(i2s->iis_cclk)) {
- dev_err(&pdev->dev, "failed to get audio-bus\n");
- ret = PTR_ERR(i2s->iis_cclk);
- goto err;
- }
-
- clk_enable(i2s->iis_cclk);
-
- ret = s3c_i2sv2_register_dai(&pdev->dev, pdev->id, &s3c64xx_i2s_v4_dai);
- if (ret != 0)
- goto err_i2sv2;
-
- return 0;
-
-err_i2sv2:
- clk_put(i2s->iis_cclk);
-err:
- return ret;
-}
-
-static __devexit int s3c64xx_i2sv4_dev_remove(struct platform_device *pdev)
-{
- struct s3c_i2sv2_info *i2s = &s3c64xx_i2sv4;
- struct resource *res;
-
- snd_soc_unregister_dai(&pdev->dev);
- clk_put(i2s->iis_cclk);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res)
- release_mem_region(res->start, resource_size(res));
- else
- dev_warn(&pdev->dev, "Unable to get I2S SFR address\n");
-
- return 0;
-}
-
-static struct platform_driver s3c64xx_i2sv4_driver = {
- .probe = s3c64xx_i2sv4_dev_probe,
- .remove = s3c64xx_i2sv4_dev_remove,
- .driver = {
- .name = "s3c64xx-iis-v4",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init s3c64xx_i2sv4_init(void)
-{
- return platform_driver_register(&s3c64xx_i2sv4_driver);
-}
-module_init(s3c64xx_i2sv4_init);
-
-static void __exit s3c64xx_i2sv4_exit(void)
-{
- platform_driver_unregister(&s3c64xx_i2sv4_driver);
-}
-module_exit(s3c64xx_i2sv4_exit);
-
-/* Module information */
-MODULE_AUTHOR("Jaswinder Singh, <jassi.brar@samsung.com>");
-MODULE_DESCRIPTION("S3C64XX I2Sv4 SoC Interface");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:s3c64xx-iis-v4");
projects / mv-sheeva.git / blobdiff