+++ /dev/null
-/* sound/soc/s3c24xx/s3c64xx-i2s.c
- *
- * ALSA SoC Audio Layer - S3C64XX I2S driver
- *
- * Copyright 2008 Openmoko, Inc.
- * Copyright 2008 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
- * http://armlinux.simtec.co.uk/
- *
- * 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/module.h>
-#include <linux/clk.h>
-#include <linux/gpio.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include <sound/soc.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"
-
-/* The value should be set to maximum of the total number
- * of I2Sv3 controllers that any supported SoC has.
- */
-#define MAX_I2SV3 2
-
-static struct s3c2410_dma_client s3c64xx_dma_client_out = {
- .name = "I2S PCM Stereo out"
-};
-
-static struct s3c2410_dma_client s3c64xx_dma_client_in = {
- .name = "I2S PCM Stereo in"
-};
-
-static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_out[MAX_I2SV3];
-static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_in[MAX_I2SV3];
-static struct s3c_i2sv2_info s3c64xx_i2s[MAX_I2SV3];
-
-struct clk *s3c64xx_i2s_get_clock(struct snd_soc_dai *dai)
-{
- struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(dai);
- u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
-
- if (iismod & S3C2412_IISMOD_IMS_SYSMUX)
- return i2s->iis_cclk;
- else
- return i2s->iis_pclk;
-}
-EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);
-
-static int s3c64xx_i2s_probe(struct snd_soc_dai *dai)
-{
- struct s3c_i2sv2_info *i2s;
- int ret;
-
- if (dai->id >= MAX_I2SV3) {
- dev_err(dai->dev, "id %d out of range\n", dai->id);
- return -EINVAL;
- }
-
- i2s = &s3c64xx_i2s[dai->id];
- snd_soc_dai_set_drvdata(dai, i2s);
-
- i2s->iis_cclk = clk_get(dai->dev, "audio-bus");
- if (IS_ERR(i2s->iis_cclk)) {
- dev_err(dai->dev, "failed to get audio-bus\n");
- ret = PTR_ERR(i2s->iis_cclk);
- goto err;
- }
-
- clk_enable(i2s->iis_cclk);
-
- ret = s3c_i2sv2_probe(dai, i2s, i2s->base);
- if (ret)
- goto err_clk;
-
- return 0;
-
-err_clk:
- clk_disable(i2s->iis_cclk);
- clk_put(i2s->iis_cclk);
-err:
- kfree(i2s);
- return ret;
-}
-
-static int s3c64xx_i2s_remove(struct snd_soc_dai *dai)
-{
- struct s3c_i2sv2_info *i2s = snd_soc_dai_get_drvdata(dai);
-
- clk_disable(i2s->iis_cclk);
- clk_put(i2s->iis_cclk);
- kfree(i2s);
- return 0;
-}
-
-static struct snd_soc_dai_ops s3c64xx_i2s_dai_ops;
-
-static struct snd_soc_dai_driver s3c64xx_i2s_dai[MAX_I2SV3] = {
-{
- .name = "s3c64xx-i2s-0",
- .probe = s3c64xx_i2s_probe,
- .remove = s3c64xx_i2s_remove,
- .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,},
- .ops = &s3c64xx_i2s_dai_ops,
- .symmetric_rates = 1,
-}, {
- .name = "s3c64xx-i2s-1",
- .probe = s3c64xx_i2s_probe,
- .remove = s3c64xx_i2s_remove,
- .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,},
- .ops = &s3c64xx_i2s_dai_ops,
- .symmetric_rates = 1,
-},};
-
-static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
-{
- struct s3c_audio_pdata *i2s_pdata;
- struct s3c_i2sv2_info *i2s;
- struct resource *res;
- int i, ret;
-
- if (pdev->id >= MAX_I2SV3) {
- dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
- return -EINVAL;
- }
-
- i2s = &s3c64xx_i2s[pdev->id];
-
- i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
- i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];
-
- 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")) {
- dev_err(&pdev->dev, "Unable to request SFR region\n");
- return -EBUSY;
- }
- 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->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;
-
- for (i = 0; i < ARRAY_SIZE(s3c64xx_i2s_dai); i++) {
- ret = s3c_i2sv2_register_dai(&pdev->dev, i,
- &s3c64xx_i2s_dai[i]);
- if (ret != 0)
- return ret;
- }
-
- return 0;
-}
-
-static __devexit int s3c64xx_iis_dev_remove(struct platform_device *pdev)
-{
- snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(s3c64xx_i2s_dai));
- return 0;
-}
-
-static struct platform_driver s3c64xx_iis_driver = {
- .probe = s3c64xx_iis_dev_probe,
- .remove = s3c64xx_iis_dev_remove,
- .driver = {
- .name = "s3c64xx-iis",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init s3c64xx_i2s_init(void)
-{
- return platform_driver_register(&s3c64xx_iis_driver);
-}
-module_init(s3c64xx_i2s_init);
-
-static void __exit s3c64xx_i2s_exit(void)
-{
- platform_driver_unregister(&s3c64xx_iis_driver);
-}
-module_exit(s3c64xx_i2s_exit);
-
-/* Module information */
-MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
-MODULE_DESCRIPTION("S3C64XX I2S SoC Interface");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:s3c64xx-iis");
projects / mv-sheeva.git / blobdiff