diff options
Diffstat (limited to 'sound/soc/s3c24xx/s3c64xx-i2s.c')
-rw-r--r-- | sound/soc/s3c24xx/s3c64xx-i2s.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/sound/soc/s3c24xx/s3c64xx-i2s.c b/sound/soc/s3c24xx/s3c64xx-i2s.c deleted file mode 100644 index ae7acb6..0000000 --- a/sound/soc/s3c24xx/s3c64xx-i2s.c +++ /dev/null @@ -1,242 +0,0 @@ -/* 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"); |